ModEvaRef2D En

ModEva/DNC880S

2D Reference Manual

CYBELEC SA Tel. ++ 41 24 447 02 00 RUE DES UTTINS 27 Fax ++ 41 24 447 02 01 CH - 1400 YVERDON-LES-BAINS E-Mail: [email protected] SWITZERLAND V-DOC-MODEVA-EN

August 3, 2006 V. 1.3

TABLE OF CONTENTS

INTRODUCTION..............................................................................................................................5 About this Manual 5 Licence Agreement and Copyright 5

CONVENTIONS...............................................................................................................................7

DEFINITIONS...................................................................................................................................11 ABS .....................................................................................................................................11

REL 11 Active Peripherals ...............................................................................................................12

Active Peripherals Machine 12 Active Peripheral Products 13 Active Peripheral Punches / Dies 13

Admissible Force applied to the Dies..................................................................................13 Alphanumeric Fields............................................................................................................15 Angle Corrections................................................................................................................16

General Remarks 16 Direct Corrections 16 Angular Corrections 17 Corrections by Thickness Measurement 17

Measuring at the TDC 18 Measuring at the PP 20

Independent Thickness Correction Y1-Y2 22 Corrections: Sensitivity BDC 22

Auxiliary Functions ..............................................................................................................23 Backgauge Retraction .........................................................................................................23 Bend ....................................................................................................................................23

At the bottom of the Die 23 Final 23 Intermediate 23 Sequence without Bend 24

Bend Counter ......................................................................................................................24 Bending Force .....................................................................................................................24 Bending Order .....................................................................................................................25

Automatic Bending Order 25 Modifying the Bending Order 25 Unbend Mode 27

Bending Speed....................................................................................................................29 BG (Backgauge) or STOP...................................................................................................29 Bottoming ............................................................................................................................30 Corrections (Table)..............................................................................................................31 Crowning .............................................................................................................................32

MODEVAREF2D_EN.DOC TABLE OF CONTENTS PAGE 1

Data Backup ....................................................................................................................... 32 Data Transfer...................................................................................................................... 33 Date and Hour .................................................................................................................... 35 Decentered Punches & Backgauge Correction.................................................................. 36 Depth Collision authorized.................................................................................................. 36 Drawing............................................................................................................................... 37 Dwell Time .......................................................................................................................... 38 Erase / Delete ..................................................................................................................... 38 Erasing Memories............................................................................................................... 39 Free Memory ...................................................................................................................... 39 Gauge Clearance ............................................................................................................... 40 Ideal Curve (CR)................................................................................................................. 41

PRODUCT NUM Page 41 Indexing Axes ..................................................................................................................... 46 Inserting a Sequence.......................................................................................................... 46 Internal Radius.................................................................................................................... 47 Keyboard ............................................................................................................................ 48 L. Bending........................................................................................................................... 48 Language............................................................................................................................ 49 Leaving the Software.......................................................................................................... 49 Leg...................................................................................................................................... 50 Length................................................................................................................................. 51 Low Speed Distance ...................................................................................................... 51 Machine Parameters .......................................................................................................... 51 Maintenance ....................................................................................................................... 52 Manual Adjustment of the Backgauge................................................................................ 52 Modifying the Origin of the Axes......................................................................................... 53 Parametric product ............................................................................................................. 55

Activation of the function 55 Create a parametric product 55 Working with a parametric product 59

Product Groups................................................................................................................... 60 Definitions 60 Working example in the PRODUCTS GROUP page 61

Product information ............................................................................................................ 62 See an Informtion 63 Creating an Information (text only) 63 Creating an Information (text and images) 63

Product Management ......................................................................................................... 66 Programming a Profile........................................................................................................ 67 Programming on Bend Num............................................................................................... 67 Programming while working ............................................................................................... 68 Q.Needed. ___ Done.___................................................................................................... 69 Reference YR cor. .............................................................................................................. 69 Screen Capture................................................................................................................... 70

Black and white, colour 70 Screen printing 71

Searching for Products according to Criteria ..................................................................... 73 Memorization date 74

Section................................................................................................................................ 75 Sigma.................................................................................................................................. 75 Simulation criteria ............................................................................................................... 76 SP (Switch Point)................................................................................................................ 79 Special bends ..................................................................................................................... 80

Preliminary / Final bend 80 Start Axes/AF...................................................................................................................... 85

PAGE 2 2D REFERENCE MANUAL MODEVA/DNC 880S

TDC (Top Dead Centre) ......................................................................................................86 Tolerance.............................................................................................................................87 Too short segment authorized ............................................................................................88 Tools....................................................................................................................................88

Programming punches 89 Programming dies 91 Modifying a tool 93 Tool positions 93 Punch list / Die list 93

Unfolded Length ..................................................................................................................94 DIN 95 REAL 95 Correction coefficient of calculation DIN 6935 95

INDEX ..............................................................................................................................................97

TABLE OF CONTENTS PAGE 3

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INTRODUCTION

ABOUT THIS MANUAL

This document has been conceived to try and answer particular questions after having acquired the basis for using the ModEva/DNC 880S software. It is complementary to the User guide which informs you about the basic procedures to be followed for using this software.

A supplement called 3D Reference manual is supplied with the ModEva software in 3D version.

This manual is organized like a dictionary, that its elements are classed in alphabetical order. If a subject is dealt with in another chapter than the one in which you are looking for information, you will find a reference to the new subject. An index situated at the end of the manual completes and facilitates the search for information. Do not hesitate to use it.

Some functionalities treated in this manual are not available on DNC 880S.

LICENCE AGREEMENT AND COPYRIGHT

This manual is subject to the licence and copyright agreement to be found at the beginning of this manual.

INTRODUCTION PAGE 5



CONVENTIONS

As a general rule, in this manual, we will not repeat how to validate a field, select a tool, call a page or any other basic manipulations. These are described by means of examples in the User guide of the numerical control or the relevant software.

In order to ensure a better readability of the reproduced screens, these ones have been converted in black and white. Possibly, certain screens illustrated in this manual may not correspond exactly to your software, this can result from the configuration of your software (number of options, axes, etc.) or from the used software version (DOS or Windows).

Typographical conventions

Arial bold Quotations of text as seen on the screen.

Arial bold italic Used to indicate the name of a DNC input or output.

Italic Reference to a written element , a paragraph or a manual. For example: See Typographical conventions.

Indicates a double pressure on the key.

General conventions for this manual

It is accepted that:

Mouse means a mouse for a PC or trackball / tracksensor for a DNC.

Click press the left mouse button.

Click right press the right mouse button.

Click left/right press simultaneously the left and right mouse buttons.

Round robin lists or multiple choice fields: They are violet coloured and signify that several options are available. The choice of the contents is made by pressing

the key. A window appears displaying the list of the available choices for this field. To validate the choice: - type the number indicated next to the choice, or - place the cursor on the choice and press the

key.

CONVENTIONS PAGE 7

It is possible, without displaying the choice window, to make appear one after the other the

choices by pressing the key. To validate, leave the field.

Function keys Each time you are asked to press a function

key to , the appropriated menu appears. Generally, the name of the function key will be used. For example: press PRODUCT

designates the key.

Reach the BEND 2D page

Example when you want to reach the BEND 2D page, press the function key BEND

, then sélect BEND 2D or simply type 02 (or the number indicated next to the choice).

Rapid validation To facilitate the operator's work, the DNC memorizes the last choice made in a menu. To validate faster an option of a menu, just

double press on a function key (e.g.: ), to directly validate the last selected page.


Software conventions, Windows version

In basic configuration, the Windows version uses the following colours:

Black Designates fixed information, designates fields etc. or fields accessible by the cursor which can be modified by the user.

Blue Used for titles and headnotes.

Bluish-grey Variable information. Not accessible by the cursor.

Green Scrolling fields. Accessible by the user for choosing between several predefined options (see Scrolling lists above).

CONVENTIONS PAGE 9



DEFINITIONS

ABS

Page: BEND NUMERICAL

This round robin list is placed next to the name of the axis of the X stop. Two choices: ABS and REL.

ABS indicates that the X axis functions in absolute mode.

This means that the destination of the axis is an absolute distance measured from the die V.

Absolute mode is selected by default.

See REL below.

Example: MEM POS X ABS 190.00 120.00

REL

REL indicates that the X axis functions in relative mode.

This means that the displacement programmed is made departing from the actual stop position. Generally a negative value is programmed.

The relative mode is often used with the cycle repetition (CY 2 at 99). For example with a punching tool, you wish to make 5 holes equidistant of 30.00mm. The first sequence must be in absolute mode (location of the first hole. The second sequence will be programmed in relative mode (X REL 30.00) with a cycle repetition equal to 4 (CY 4).

Example: MEM POS X REL 70.00 120.00

DEFINITIONS PAGE 11

Remark: It is not possible to use the relative mode on the first sequence. If such is the case, an error is generated when changing mode (AUTO, SEMI-AUTO) and the message DEPL. X REL. IMPOSSIBLE is displayed in the interactive field.

ACTIVE PERIPHERALS Page: WELCOME

Aim: This function allows to choose the peripheral containing the required information and this separately for the machine parameters, the products, the tools the CAD files and the complementary files on the product information page. It offers a multitude of combinations especially appreciated on a PC work station. Effectively using these choices, the operator could easily manage several machines.

The comprehension of this notion is important, as its flexibility allows a large diversity of choice.

Definition: The active peripheral is the peripheral in which the software is going to read, search, save or delete data. The active peripherals are designated on the WELCOME page. On certain pages, another peripheral can be temporarily selected for an operation (for ex. PRODUCT LIST, PROGRAMMING PUNCHES / DIES, TRANSFER).

Active Peripherals Machine

When you change the peripheral in the MACHINE field, automatically PRODUCTS, PUNCHES and DIES are redirected on to the same peripheral. To change them independently one from the other, you must simply modify them afterwards.

The CAD FILES and COMPLIMENT peripherals are not modified automatically, as they are generally situated on a network and are often the object of a “specific classification” in one or several directories.

By modifying in this way the MACHINE peripheral, the environment of the software “ becomes” that of another machine. It is thus easy to simulate products for different configurations of pressbrakes. Also, more and more you will find diskettes containing examples of special products (supplied by CYBELEC or by the machine manufacturer) for which the realization needs a special (Tools for example). With this possibility you can thus easily visualize these demonstrations with all the machine context in which they were created.

On a numerical control, it is evidently only possible to work with a machine when the MACHINE field is switched to INTERNAL. If another peripheral is used to visualize a demonstration product for example, it will however still be possible to switch the DNC to semi-auto or auto mode.


However the massage ENC NOT CONNECTED will appear and it will not be possible to work with the machine. To reactivate the INTERNAL machine peripheral, you must:

Select MACHINE INTERNAL.

Initialize the ENC by pressing INIT ENC, Action menu.

Active Peripheral Products

Selects the default peripheral in which the operations of searching, saving and deleting of products is effectuated.

Active Peripheral Punches / Dies

Selects the default peripheral in which the operations of searching, saving and deleting punches and dies is effectuated. Evidently the tools specified in the current product must be available in the addressed peripheral, without which the software will give an error message.

ADMISSIBLE FORCE APPLIED TO THE DIES

Page: PROGRAMMING OF DIES The maximum admissible force is defined when programming the tools. In reality however, the admissible maximum force varies depending on the bending angle (and, of course, on the other customary parameters).

The die programming page contains two pairs of fields which make it possible to adapt the safety parameters. The fifth field enables the user to test the result.

When only the first Ton/m field is programmed, this means that the pressure limit is constant and not depending on the angle.

__._° -> max 200.0 Ton/m __._° -> max ___._ Ton/m

Test 90.0° = 200.0 Ton/m The Test field indicates the maximum admissible force for the programmed angle.

When the fields "open angle" and Ton/m on the same line have been programmed, the calculation of the admissible force is limited according to the diagram shown below.

DEFINITIONS PAGE 13

If there is no specific indication given by the manufacturer, you enter the maximum admissible force already known, and an "open angle" of 90° (as below).

90.0° -> max 200.0 Ton/m __._° -> max ___._ Ton/m

Test 60.0° = 115.5 Ton/m When the 4 fields have been programmed, the calculation of the admissible force is limited according to the diagram below. The choice between the above method and the method explained in this paragraph depends on the known data and the decision of the person who enters the die data.

90.0° -> max 200.0 Ton/m 30.0° -> max 45.0 Ton/m

Test 60.0° = 122.5 Ton/m


ALPHANUMERIC FIELDS

Certain fields (DRAWING, PUNCH, DIE etc.) can contain alphanumeric characters.

To program the alphanumeric fields on the numerical controls, you must use the "soft" alphanumeric keyboard.

To call the "soft” alphanumeric keyboard in the software , position the cursor on the alphanumeric field (if the field is only numeric the keyboard will not

appear) and press the key.

4 tables of characters are available (#1, #2, #3 and Alt). To change the "table":

Point to the field bottom left #1, #2, #3 or Alt and press or click left in this field.

To enter the characters in to the alphanumeric field:

Select the character.

Press or click left. Repeat the operation for the other characters.

To leave, press the key again.

DEFINITIONS PAGE 15

ANGLE CORRECTIONS

Pages: CORRECTIONS

GENERAL REMARKS

The sheet metals used in the workshops have hardly ever their nominal thickness. The real thickness commonly varies ±10% from the nominal value. Also the variation is not constant across the whole length of the sheet. The thickness on the left side can be different to the thickness on the right side (sheets with a trapezoidal section). The software allows to correct this type of error by dissociating the correction of one extremity from that of the other extremity of the bend.

The bending depth calculations (as well as those for elongation, pressure and crowning) are based on the nominal thickness (that which is programmed in the THICKNESS field).

In this Angle corrections chapter we will deal with 3 types of correction:

Direct corrections

Angular corrections

Corrections by measuring the sheet thickness.

Depending on the field in which it is entered, a correction can act on:

The relevant bend (uniquely)

All the bends (with the same angle) situated on the same section (same profile)

All the bends (with the same angle) of the product (also on distinct sections)

DIRECT CORRECTIONS

To use direct corrections, the DNC must be in programming or semi-automatic mode and you simply enter a value in to the required field on the first table of the page. The number of the current bend is located at the top of the screen.

If the correction concerns the two sides of the beam, the same value for Y1 and Y2 must be entered.

It is also possible to correct the other axes, the PP, the bending force and the crowning according to the same principles.


Direct corrections are additioned. This means that if there is a global correction for the product and a correction for a given bend is programmed, the final correction for this bend will be the sum of the two corrections.

ANGULAR CORRECTIONS

After having made a bend, the operator measures the angle obtained. The measured angular value is entered in to the ANGLE field. The DNC automatically calculates the correction to obtain the angle originally programmed. If after making the corrected bend, the angle is still not correct, simply enter the new measured angle value. In certain cases this operation may have to be repeated 2 or 3 times.

Attention, you must not intervene in the direct corrections table simultaneously with the angular corrections.

As for the direct corrections the corrections can be attributed to:

BEND Corrects only the current bend.

SECTION _ Corrects all the angles of the specified section which have the same programmed value and the same tools.

PRODUCT Corrects all the angles of the product which have the same programmed value and the same tools.

The DNC must be in programming or semi-automatic mode.

Program the THICKNESS MEASUREMENT field in the following manner: THICKNESS MEASUREMENT CENTRAL NONE MODE OLD MEASURE

Measure the angle obtained.

Introduce the measured value in to the ANGLE field under one of the columns BEND, SECTION or PRODUCT.

Test the result and redo if necessary.

See also the machine parameter COMPENSATION ELASTIC RETURN on the MATERIAL page. This parameter allows to correct in permanence an angle in a given plane.

CORRECTIONS BY THICKNESS MEASUREMENT

Correction by thickness measurement can be realized in several ways, but the principle remains identical. A system (or the operator) furnishes the DNC with the real measurement of the material. With these parameters, the DNC calculates the necessary correction.

DEFINITIONS PAGE 17

The two main methods are: Measuring at the TDC (Top dead center) Measuring at the PP (Pinch point).

Measuring at the TDC The principle is that the measurement is made and entered in to the DNC while the machine is at the TDC. The measurement is entered either conven-tionally using the keyboard, or by a RS232 link using an adequate instrument of measure, or otherwise by a system integrated at the stop.

Measuring at the PP In this case the measurement is made at the PP. Three possibilities are offered. - Measurement by the beam. - Measurement by the beam with die displacement. - Measurement of the real PP by an external system.

As for the direct and angular corrections, it is possible to affect the correction to the current bend, to the section or to the whole product.

Also, with the correction in function of the measurement of the thickness, it is possible to differentiate the correction for each extremity of the bend. The choice is made using the round robin list CENTRAL or EXTREMITIES. (See further on in this chapter for the use of this possibility).

Remarks: For technical reasons, you can only pass to programming mode during working (DNC in automatic mode and programming) if NO THICKNESS MEASUREMENT has been selected. For technical reasons, the fields POS. SHEET and THICKNESS MEASUREMENT can no longer be modified in semi-automatic mode.

Measuring at the TDC

As described in the introduction to this chapter, the measurement is made when the beam is at the TDC. Only the introduction of the measurement by the operator , such as the "standard" DNC software will allow, will be described in this paragraph. The DNC must be in programming or semi-automatic mode. Proceed in the following way:

Program the THICKNESS MEASUREMENT field in the following way: THICKNESS MEASUREMENT CENTRAL TDC MANUAL MODE BY BEND


Measure the thickness very precisely (using a micrometer).

Enter the measured value in to the LEFT THICKNESS field of the PRODUCT, SECTION or BEND column depending on your needs. By only programming the LEFT THICKNESS field, the software assumes that the measurement is central.

Leave the field.

Bend.

If the introduction is made in the

PRODUCT column: - The measurement made by the operator on whatever bend will remain

valid until the next measurement. - The real thickness obtained is saved in association with the product. - It is considered that the real thickness is the same for all the bends. - At each new measurement, all the bends are re-corrected. - If no measurement is made, the correction is made according to the

last measurement saved.

SECTION - The measurement made by the operator on whatever bend of the

section will remain valid until the next measurement.. - The real thickness obtained is saved in association with the section to

which belongs the bend on which it was made. It is valid for all the successive bends belonging to the same section.

- If a new measurement is made, all the bends of the relevant section are re-corrected.

- If no measurement is made, the correction is made according to a possible former measurement saved in association with that section.

Remark: This means that if any values are present in the SECTION column, they will be taken in to account and the values in the PRODUCT column will be ignored. If there are no values in the SECTION column, the values in the PRODUCT column, if they exist will be taken in to account.

BEND - The measurement made by the operator on whatever bend is only

valid for that bend. It will also be memorized. - If no measurement is made, the correction is made according to a

possible old measure memorized in association with that bend.

Remark: If any values are present in the BEND column, they will be taken in to account and the values in the SECTION and PRODUCT columns will be ignored. If there are no values in the BEND column, the values in the SECTION column, if they exist will be taken in to account. If only PRODUCT column contains any values, then it is these that will be taken into account.

DEFINITIONS PAGE 19

Measuring at the PP

Only the measurement at the PP with the beam will be described in this chapter.

Principle: The beam makes its usual approach (in semi-auto or automatic). When it reaches just before the theoretical PP, the DNC reduces the system pressure and "lands" freely on the sheet. The DNC detects the stopping of the beam and in this way allows the measurement of the sheet thickness. It is evident that in this phase the sheet must not flex under the influence of the beam, otherwise the measurement will be falsified. The way in which this option functions will depend directly on the machine hydraulics, the speed when arriving on the sheet and the minimum force of the beam in this measurement phase.

It is obviously unthinkable that in this phase the beam be out of true, the measurement would then be totally false. Ideally the product should be in the centre of the machine, have a bending length greater than 2/3 of the total length of the machine and be able to support the weight of the beam without flexing.

As for the other corrections the measurement can be made by product, section or bend, central or at the extremities depending on the choice made.

Before each use, a calibration must be done in order to gauge the whole.

Calibration

A calibration cycle is very similar to a measurement cycle.

Simple, the real thickness obtained is subtracted from the nominal thickness. This difference is memorized to be used later as a correction for the real thickness calculations.

Procedure:

Measure the sheet with a micrometer.

Select CALIBRATION MODE. Enter the values in the appropriate fields RIGHT THICKNESS and

LEFT THICKNESS of the CORRECTIONS page.

Put the DNC into semi-auto mode.

Place the sheet at the centre of the machine and make a bend.

If the calibration cycle has been done correctly the differences between the real thicknesses measured and the reference values will be displayed in the lines LEFT THICKNESS and RIGHT THICKNESS, under the --AIM-- column. They will remain there until the next calibration.

Select the required measurement mode MODE BY PRODUCT, BY SECTION or BY BEND. From that moment on, during working, the measurement will be made according to the option chosen. See also the description of OLD MEASUREMENT mode which follows.

Remark: If the POS. SHEET field is not defined, it is supposed that the sheet is centred between the two rulers. If the length of the sheet is not defined, it is supposed that it is equal to the distance between the two rulers Y1 and Y2 (machine parameters).


Working with the correction MEASUREMENT AT THE PP

After having done the calibration, MODE BY PRODUCT, BY SECTION or BY BEND must be selected depending on whether you wish to effectuate a measurement by product, section or bend respectively.

OLD MEASUREMENT In this mode no new measurements are made. The old measurements memorized in association with the product, section or bend are conserved and used. This mode is especially useful when working with a batch of sheets sufficiently homogenous. In such a case it is sufficient to proceed with a single thickness measurement during the first bend of the first product and to correct on the same basis thereafter. This allows to avoid the inevitable time loss associated with measuring. This work mode also applies in the case of working with groups of products, because the old measurements associated with the last product executed are recopied on to the following product.

PP TOLERANCE IN % OF THICKNESS Page: MACHINE PARAMETERS / MATERIALS. This field allows to define a maximum limit to the "dispersion" of the material when the thickness correction at the PP is being used. In cases where the thickness of the measured sheet is superior or inferior to nn%, the bend will not be carried out and the system will issue a message to the operator. See Corrections (Table).

THICKNESS CORRECTION FACTOR Page: MACHINE PARAMETERS / MATERIALS. This table allows to define a set of corrections according to the thickness variation when the thickness correction at PP is being used. The default value for this factor is 1.00. If the user notes that for a given material, the software has a tendency of overcompensating (i.e. the beam goes too far down when the real thickness is less than the nominal thickness, or the beam does not go down far enough when the real thickness exceeds the nominal thickness) he enters a value between 0.99 and 0.0 in the respective angle range. However, if the software does not compensate enough, the operator enters a value between 1.01 and 99.99. See Corrections (Table).

DEFINITIONS PAGE 21

INDEPENDENT THICKNESS CORRECTION Y1-Y2

The principle consists of furnishing or (using one of the methods described above) the thickness at each extremity of the bend. By means of this data and knowing the position of the sheet, the DNC will calculate a different correction for Y1 and Y2. This type of correction is particularly appreciated for bending sheets with a great bending length and an important variation in thickness.

For this to function, the machine parameters describing the position of the rulers, the machine width ,etc. must be programmed, otherwise an error message will appear.

The independent thickness correction Y1 Y2 can be used in conjunction with either the thickness measurement at the PP or the thickness measurement at the TDC. It will also function with the choice of correction by product, section or bend.

Thickness measurement at the TDC

Functioning is identical to that described in the Measurement at the TDC paragraph above, except that the position of the sheet and the thickness at each extremity must be programmed.

Select THICKNESS MEASUREMENT AT EXTREMITIES

Program the position of the sheet in the POSITION SHEET field and in the chosen column.

Introduce in the same column the sheet thickness measured at each extremity of the future bend.

Leave the field.

Bend.

Thickness measurement at the PP

Functioning is identical to that described in the Measurement at the PP paragraph above, except that the position of the sheet must be programmed.

Select THICKNESS MEASUREMENT AT EXTREMITIES.

Program the position of the sheet in the POSITION SHEET field and in the chosen column.

Proceed as described in the Measuring at the PP paragraph above.

Continue bending.

CORRECTIONS: SENSITIVITY BDC

Page: CORRECTIONS, field: SENSITIVITY BDC.

This field indicates which depth variation is necessary to obtain an angle variation of 1 (one) degree in the current sequence.

If this value is too small (e.g. < or = 0.05 mm), it is recommended to use a die with a wider V opening.


AUXILIARY FUNCTIONS

The auxiliary functions can be programmed and used for various means by the manufacturers. It is thus inappropriate to discuss them here, please ask the manufacturer of the machine for details of their functions.

BACKGAUGE RETRACTION

Page: BEND NUMERICAL

In certain situations it is necessary to disengage the back gauge during bending.

This field is automatically programmed when an automatic search for the bending range is made. This value can be modified after the simulation by the operator.

The retraction value is a relative value usually positive. If a negative value is programmed, this allows to execute a negative “retraction”, that is a displacement towards the die.

A minimum default retraction can be imposed in the machine parameters.

BEND

AT THE BOTTOM OF THE DIE

See Bottoming.

FINAL

See Special bends.

INTERMEDIATE

See Special bends.

DEFINITIONS PAGE 23

SEQUENCE WITHOUT BEND

Page: BEND NUM

It can be useful for the operator to create a sequence which does not realize a bend, but executes the displacement of an axis or an auxiliary function.

Insert a supplementary sequence for this operation (see Inserting a Sequence).

On BEND NUM page, in the desired sequence, delete the angle and program a value Y1/Y2 greater than that of the pinch point.

When executing the product, the axes and auxiliary functions position themselves as normally, but when the operator gives a descent command, the beam will not descend. If the DNC is in automatic mode, the next sequence will be displayed, the axes position themselves on the new values and the beam will be waiting for a descent command, as usual.

In the case that the beam should not descend and the operator has directly programmed the Y1/Y2 values, it is to verify that these values are not greater than those of the pinch point.

BEND COUNTER

The WELCOME page displays the number of bends carried out since a given date. The counter is set to zero in our plant. When the first bend in automatic or semi-automatic mode is done, the counter starts running and the date is automatically written. This data can not be modified on-site.

BENDING FORCE

Page: BEND NUM If the data concerning the length, the thickness, the sigma and the tools are known, this field is automatically calculated. It indicates the bending force (tonnage) needed for the bend.

This field can be reprogrammed as you require. However if the value entered is greater than the tool safety, an error message is generated in the interactive field. These safety controls are executed when changing the DNC mode (see Tools).


BENDING ORDER

AUTOMATIC BENDING ORDER

The software can effectuate on demand an automatic search for the bending order. The result is conditioned by the "simulation criteria" that the operator can enter depending on his requirements according to the product to be produced (see Simulation criteria).

Enter the product data (see the manual User guide).

BEND 2D page, BEND 3D page.

Choose the simulation criteria.

Position the cursor on the SIMULE field and select WITHOUT IMPOSED BEND.

Choose SEARCH BENDING ORDER in the action menu.

Depending on the complexity of the product, the software will furnish a complete solution, a partial solution, or no solution. See hereinafter Unbend Mode.

MODIFYING THE BENDING ORDER

This operation is preferable done on the BEND 2D page (with a 3D version, it is possible to realize this operation on the BEND 3D page. See also the 3D Reference manual).

Above: Initial situation.

Requested situation.

DEFINITIONS PAGE 25

Select the sequence to be modified ( or Pg Dn

keys).

Place the cursor on the FACE field and enter the number of the face

to be bent (3).

Place the cursor on the STOP field and enter the number of the stop (4). The software proposes the possible stops in the STOP PR field.

Select SIMULE BEND in the Action menu.

The sequence which bends the chosen face has been deleted.

The next sequence bends the same face (BEND 2). Change the stop if necessary.

"Move" to the sequence to be modified (BEND 3 with the or

Pg Dn keys).

Place successively the cursor on the FACE field and enter the number of the face, then on STOP and enter the stop for this sequence (in this example FACE 1 and STOP 0).


Select SIMULE BEND in the Action menu.

Proceed in the same way for other bends or to totally impose a simulation.

If you have mastered the numbering of the faces and stops, it is not necessary to simulate each bend. After having finished the introduction for sequence simply position the cursor on the SIMULE field, select WITH IMPOSED BEND and SEARCH BENDING ORDER in the Action menu.

UNBEND MODE

The unbend mode is useful when the software cannot find a solution for the bending order.

The unbend mode presents the finished product, the operator determines the bending order manually in the same way as described above, but by commencing with the last bend and going towards the first.

Below a simple example in which the product touches the table frame before the bend, however the sheet is put. The solution for this product is to create an intermediate bend. This solution is described in Special bends. This section only shows how to use the unbend function.

In the 1st figure, the product touches at the last bend, in the 2nd figure it already touches at the 2nd bend.

DEFINITIONS PAGE 27

Below are the data of the product (the die height is 50 mm).

In BEND 2D page, when asking to search a bending order, the message Solution not found is displayed.

Select UNBEND mode.

The last bend is displayed, you immediately can remark the collision.

If a solution without collision is displayed, press the key and see if the software furnishes a solution. If no solution is proposed, that means that there is collision. Program or change in the FACE field the different faces and see which possibilities exist.

Press the key to move in the previous sequence. If the software finds a solution, this will be displayed immediately as well as the other possible faces (field PR FACE = proposed face).

In unbend mode the proposed faces are displayed in the PR FACE field. So the operator can introduce one by one the proposed faces in the FACE field, in order to see the result.


BENDING SPEED Page: BEND NUM

This field allows to reduce the bending speed. It is programmable in % of the maximum bending speed.

BG (BACKGAUGE) OR STOP Pages: BEND NUM, BEND 2D Displays or allows to select the stop for the current sequence.

The DNC recalculates the target value of the X and R axes as a function of the choice. Display the round robin list and choose a stop appropriate for the sequence.

This field will not appear if only one stop is defined in the machine parameters.

Changing the stop on the BEND 2D page

See also Bending Order.

Introduce the designation of the required stop or select it in the round robin list.

Leg

Support

DEFINITIONS PAGE 29

BOTTOMING

Page: BEND NUM.

The bend by bottoming is a bending mode in which the DNC does not aim for a predefined or calculated position to be reached, but descends until it reaches a position which mechanically prohibits the beam from going any further. The DNC detects this stop; and this determines the end of the descent cycle.

The bend by bottoming allows to obtain special bends which it is not possible to obtain in any other manner, such as the flattened bend in a special die, but this technique involves certain risks.

In bottoming mode the beam furnishes the tonnage programmed in the sequence or higher, if the minimum pressures of the machine parameters are higher than those of the current sequence.

The DNC stops the beam descent cycle when it realizes that it is immobilized mechanically on the object to be worked. Which means that the totality of the programmed force will be exerted on this object and in consequence on the tools.

You must be aware that the sheet and the tools solicited in this operation must be capable of supporting such a force without damage.

Also, if the work does not need the whole bending length of the machine, it is absolutely necessary to position everything in the middle of the machine.

To execute a bend in bottoming mode:

erase the programmed angle (empty field),

then erase the MEM values of Y1 and Y2 (empty fields).

The cycle is effectuated normally but after passing the pinch point, the DNC monitors the beam displacement. As soon as the beam has stopped and no longer sends any displacement information to the DNC, the DNC considers that the operation has ended, the dwell time is executed and the ascent cycle is activated according to the chosen mode.


CORRECTIONS (TABLE)

During practical work it can sometimes be found that certain angles and/or flap lengths often or always need to be adjusted by the same value.

In order for the operator to avoid never-ending corrections, a correction table is available to him. The table is called MATERIAL and can be reached via the machine parameters.

5 types of material are pre-programmed:

STEEL ALUMINIUM SS SPECIAL 1 SPECIAL 2

For each of these materials, the tables of the MATERIAL are different.

The main items within this page are 3 tables:

UNFOLDED LENGTH By means of 10 columns (0 to 9), it is possible to apply 10 different corrections to the DIN 6935 calculation of the unbended length. In the example shown above, if the chosen material is STEEL 3, the correction will be: DIN * 0.850. The choice of the correction can be entered in pages such as PROD NUM, BEND NUM, etc., in the field immediately following the material designation.

DEFINITIONS PAGE 31

Allows to define an angle correction for each type of material, according to the programmed angle. In the example shown above, the angles comprised between 76° and 90° and which use the material named STEEL will be corrected automatically by -2.5°.

SPRINGBACK COMPENSATION

These two factors replace the calculation of the bending force normally carried out by the DNC. If they are not programmed, these two values will be: AIR BENDING = 1.75 BOTTOMING = 42.0 If necessary, these values can be changed by the operator. These two values are specific to each of the 5 material types.

PRESSURE

This field represents a safety factor for the tools. See the section Corrections by Thickness Measurement / Measuring at the PP.

PP TOLERANCE IN % OF THICKNESS

This table is used by the "thickness correction at PP" function. See the section Corrections by Thickness Measurement / Measuring at the PP.

THICKNESS CORRECTION FACTOR

CROWNING Page: BEND NUM.

Only valid if your machine is equipped with a crowning option.

The crowning is calculated automatically during simulation. The result is a function of the applied force and the calibration curve programmed in the machine parameters.

The operator can modify these values sequence by sequence, however they will be recalculated during the next simulation.

The working units can vary depending on the constructor, to know the use of this function, please consult the manufacturer of your machine. However, the "per cent" is currently used as unit, that means that 50 programmed in this field will give 50% of the maximum crowning.

DATA BACKUP

See Data Transfer.


DATA TRANSFER

Page: TRANSFER

From this page data can be saved or loaded in the different peripherals. (Diskette, Network, etc.)

Source

This field selects the peripheral which will supply the data to the destination peripheral at the time of the transfer.

Destination

This field selects the peripheral which will receive the data at the time of the transfer.

Global transfer

The choices are:

PUNCHES Transfer of all the punches.

Transfer of all the dies. DIES

Transfer of the tools defined in multisimulation. SELECTED TOOLS

LIST OF PERIPHERALS

Transfer of the list of peripherals.

MACHINE PARAMETERS

Transfer of the machine parameters.

PRODUCTION Transfer of the production pages.

ALL THE PRODUCTS AND THE GROUPS

Global transfer of all the products and groups of products.

Partial transfer

Select the transfer of the products mentioned in the table below.

In this table it can be specified for each product the source and the destination in the respective columns. If these fields are not specified, it is the choice of SOURCE and DESTINATION at the top of the page which is used by default.

To simplify the selection of the products to be transferred, simply “mark” them on the PRODUCT LIST page. They will automatically appear in this table (see Marking products).

DEFINITIONS PAGE 33

The STATUS column gives the state of the transfer.

The product is being transferred.

The product has not been transferred. (Double definition in the list or another error).

?

! An error has been detected during the transfer phase, it has not been transferred.

* The product has been transferred correctly.

Making a transfer:

Select the SOURCE and the DESTINATION.

Position the cursor on the type of transfer chosen.

Start the transfer using the TRANSFER function in the Action menu, then confirm.

Recommendations:

Make a backup of the tools, the machine parameters and the list of peripherals (if your DNC is on a network) just after the first installation and before the intervention of a technician. Keep this information in a safe place.

Save the products periodically on a floppy disk if your DNC is not connected to a network. Its simple, fast and less expensive than having to reintroduce everything if any problems arise.


DATE AND HOUR

Change Date and Hour

Page: WELCOME

Call the WELCOME page.

Position the cursor in the upper part of the screen on the Date or Hour field and enter the new value, thereby respecting the format.

On the DNC, the locking key must be set on position 2. Use the key as separator.

Year 2000 When the year format uses two digits only, the software assumes that: 00 to 68 = 2000 to 2068 and 82 to 99 = 1982 to 1999.

Change Date and Hour Display Format

Sub-page of the WELCOME page.

To modify the date and the hour of the numerical control:

Call the WELCOME page and select DATE/TIME in the ACTION menu.

A new screen appears on which the context of the DNC can be parametered. (International parametering).

It is possible to load the default parameters by actioning the DEFAULT function in the ACTION menu.

Classification, search

To facilitate the classification or the search for programmed products (by date / hour), it is strongly recommended to put the DNC or the PC to the correct time regularly (about every 3 months or after an intervention).

DEFINITIONS PAGE 35

DECENTERED PUNCHES & BACKGAUGE CORRECTION

Page: PUNCH PROGRAMMING The field, named X CORRECTION allows the user to carry out a correction if a punch is decentered. This correction applies to the backgauge a "modification of origin" according to the decentering of the punch. It also takes into account the mounting direction of the tool.

The correction becomes effective when the control switches to semi-auto or automatic mode.

DEPTH COLLISION AUTHORIZED

Pages: TOOL BEND, PROGRAMMING PUNCH / DIE

The software generates an error message if it detects a collision of the material at the bottom of the die and / or between the lateral faces of the punch and the die. This message is displayed in the interactive field. The software switches to the TOOL BEND page with the cursor pointing to this field.

By default if nothing is specified, the collision test is made on each bend. On the TOOL BEND page the DEPTH COLLISION AUTHORIZED field is equal to ON THIS BEND NO.

However it is possible to inhibit this safety measure on the TOOL BEND page for the current product (see below) or by default on the PROGRAMMING PUNCH or DIE page.


TOOL BEND Page

Two choices are available:

The collision test is made (or not depending on the choice YES / NO) only on the current sequence (bend).

ON THIS BEND / YES / NO

The collision test is ignored for all of the sequences constituting the product.

GLOBALLY

Side collision Bottom of the die collision

PROGRAMMING PUNCH / DIE Page

If the collision test is generally not desirable, it is possible to arrange for it to be ignored by default when a product is created.

To create this situation when creating the tool you must program DEPTH COLLISION AUTHORIZED YES.

For this authorization to be valid (on the TOOL BEND page), the punch and the die must both have this authorization. If one or the other of the tools does not give this authorization, then it is NO which is again valid.

DRAWING

Pages: On most pages.

This field allows to enter an alphanumerical reference 24 characters (see Alphanumeric Fields).

It is recommended to use this possibility to define a product in a unique manner when a large number of products are dealt with. This facilitates searching using product search criteria.

DEFINITIONS PAGE 37

DWELL TIME

Page: BEND NUM

Defines the dwell time.

If not programmed, the default value is 0.5 seconds. Other values between 0.0 and 9.9 seconds can be entered.

ERASE / DELETE

These operations are available in the ACTION menu, they vary according to the context. Below you will find the definitions of these actions.

ERASE BEND Erases the contents of all the fields, but the sequence remains.

ERASE SECTION Erases the data (bending order) of the selected section.

ERASE PRODUCT Erases the contents of the work memory.

DELETE BEND Deletes the selected sequence (with automatic recompacting of the remaining sequences).

DELETE SECTION Deletes the selected section.

DELETE PRODUCT Deletes the selected product. On the PRODUCT LIST page, it is possible to delete a product by placing the cursor directly on the required number in the list.

DELETE Depending on which field the cursor is located, deletes the selected punch, die or product.


ERASING MEMORIES

Page: MACHINE INITIALIZATION - DNC/ENC

General remarks:

This page allows to empty (erase) different memories. Depending on the type of erasure, it is necessary to have the key in position 1, 2 or 3.

To delete the contents of one or all the memories:

Select the peripheral in which the operation is to be made.

Place the cursor on the relevant field.

Click right or key or Action menu DELETE.

Confirm.

FREE MEMORY

Pages: PRODUCT LIST, WELCOME

Indicates to the operator the quantity of available free memory, given as a % for the selected peripheral.

DEFINITIONS PAGE 39

GAUGE CLEARANCE

Page: BEND TOOLS

Reminder: the following movements are considered to be dangerous and thus to require die clearance: displacement of Z, M1 and M2 axes, as well as the auxiliary function of the DIE type.

In order to offer functionalities adapted to particular needs, the operator now has the possibility of specifying the type of gauge clearance.

The operator can make his choice for each sequence within the BEND TOOLS page, on the X CLEARANCE field.

Attention: The clearance distances (parameter 233) are programmed in the machine parameters, they must not be changed.

Three types of clearance are available:

Default value. MAXIMUM In this case, the die clearance is made according to the higher value of the two parameters X Position for Safety Speed and X Position for die clearance. Normally, the X Position for Safety Speed is the higher of both values.

Afterwards, the axes move at maximum speed. Clearance until X Position for die clearance.

OUTSIDE CLEARANCE ZONE

Then the axes move at the speed authorized within the X Position for die clearance zone. This type of clearance should be used when there are only small distances to be covered. There is no clearance at all. The axes will move at safety speed when they are located within the X Position for Safety Speed zone.

NONE

PM 50

PM 233

PM 50

PM 233

PM 50

PM 233

The clearance distance is dependent on the die width. If several posts are mounted, the distance takes into account the largest of the tools. PM 50 and PM 233 are the numbers of the concerned machine parameters.


IDEAL CURVE (CR)

Pages: PRODUCT NUMERIC and BEND NUM.

The ideal curve allows to make a bend with a large internal radius.

An ideal curve can be programmed on one or the other of these pages. An ideal curve is defined by programming from 4 to 98 (programming 0, 2 or 3 will give an error).

Remark: For the result to be coherent, the number of bends to realize the angle must be such that the length of each segment is greater than half the length of the V opening of the die. If this is not the case a message informs the operator and the result will be an angle too open.

Tips If 99 is programmed in the CR field, the software automatically determines the maximum of bends for the ideal curve. Of course the operator can reduce the number of bends.

In ideal curve mode, the software calculates different bends for the first, second, next but last and last bend according to the drawing which follows.

Procedure for realizing an ideal curve

PRODUCT NUM Page

Call the PRODUCT NUM page.

Introduce the value of the required segment in the L column.

Introduce the final angle required.

Introduce the final internal radius in the Ri field.

Introduce the number of bends for the ideal curve in the CR field.

See also Tolerance.

DEFINITIONS PAGE 41

Programming example


Introduce the tools and the material in the usual way.

Introduce the product dimensions with the internal radius of the ideal curve in the Ri column.

Introduce 99 in the CR field, the software will calculate the maximum number of bends for this ideal curve (see fig. above).

Start the calculation (via Action menu) to obtain the unfolded length, the tolerance (see Tolerance) and the number of bends for the ideal curve.

Call the BEND 2D page.

Make sure that the SIMULE field is on WITHOUT IMPOSED

BEND.

Choose SEARCH BENDING ORDER (via the Action menu).

Then pass in semi-automatic (on PC key F8 and F10 to return to programming mode).

Simulate the bending with the key.


Programming example for a gutter

To realize the above type of product:


Introduce the tools and the material in the usual way.

Introduce the product dimensions with the internal radius of the ideal curve.

Introduce 99 in the CR field, the software will calculate the maximum number of bends for this ideal curve (see fig. above).

Start the calculation to obtain the unfolded length, the tolerance and the number of bends for the ideal curve.

Call the BEND 2D page.

In the actual state of the software, the automatic simulation of this example product will not give a result. The UNBEND mode must be used to impose semi-automatically the order of bends. In the example below, the bending order has not been modified. The operator is free to do so during this procedure.

DEFINITIONS PAGE 43

Select UNBEND mode.

The product is displayed in the tools with the last programmed bend.

Introduce the face which must be bent last (3 in this example)

When leaving the FACE field, the software displays the chosen bend.

Place the cursor on the STOP field and modify the stop if necessary. For this product the stop 4 proposed automatically has been conserved. In spite of the "collision" visible in this situation, there will not be any collision due to the ideal curve (see further on under simulation in semi-automatic mode).

Press the key. The software displays the previous bend (another bend can be selected by programming in the face field the one required). The proposed stop (5) is conserved but can also be modified.


Repeat the operation above until you have reached bend No 1.

Change to semi-automatic mode (on PC press F8).

Visualize the result step by step by pressing the Pg Dn

key for each bend made. (On PC, to return to programming mode press F10).

Remark: In this example, the stop is equipped with an R axis. The software thus calculates its position automatically as a function of the ideal curve. If your DNC is not equipped with an R axis, a vertical stop can be fixed perpendicular to the original stop.

DEFINITIONS PAGE 45

INDEXING AXES

Page: MACHINE INITIALIZATION DNC / ENC, Action menu.

The INDEX AXES function allows to index or index the axes once again (if already done).

If the DNC has not been indexed, this function will have the same effect as if

the Start button had been pressed in order to index the DNC. If the DNC is already indexed, this function allows to re-index the axes without switching the power off. In this case the DNC will ask the operator to confirm this operation. Make sure that the beam is located underneath the indexes !

INSERTING A SEQUENCE

BEND NUM page

To insert a sequence:

Position the cursor in the BEND field, then take position on the

sequence you wish to insert (for example 2) using the or key.

Select INSERT BEND (Action menu).

The inserted sequence will take place 2 in our example and displace the sequence 2 to position 3. An inserted sequence is empty.

If you wish to insert a sequence and copy its contents, you must proceed in the same way, but you must choose COPY A BEND (Action menu).

BEND 2D page

This possibility is used, for example, for effectuating special work (Punching, modelling, etc.) which cannot be represented graphically.

On the BEND 2D page, if a sequence is inserted, the graphic of the previous sequence is always displayed. This sequence will NOT be represented graphically. A sequence inserted in this way is empty. You must go to the BEND NUM page to modify the inserted sequence.


To insert a sequence:

Position the cursor in the BEND field, then take position on the

sequence you wish to insert (for example 2) using the or key.

Select INSERT BEND (Action menu).

The inserted sequence will take place 2 in our example and displace the sequence 2 to position 3. An inserted sequence is empty.

INTERNAL RADIUS

Pages: PRODUCT NUM, BEND NUM

The internal radius is calculated automatically as a function of the sheet metal thickness and the tools. This calculated radius is only valid for air bends.

Ri

If the radius of the punch is greater than the natural internal radius of the sheet, it is that of the punch which takes precedence.

It is possible to impose the radius in order to adapt the calculation of the unfolded length and the calculation of the stop positions at best for a particular material. To do this:

Program the radius in the relevant field.

Program the CR field at 1.

DEFINITIONS PAGE 47

KEYBOARD

External keyboard for the DNC

In case of necessity, it is possible to connect a 100% PC AT compatible external keyboard to the rear of the numerical control..

Attention: The DNC must be disconnected from the power supply to connect the keyboard, otherwise correct functioning may be impeded.

When an external keyboard is connected to the DNC, the front panel of the numerical control remains permanently active.

L. BENDING

Pages: PRODUCT NUM, BEND NUM

Bending length, sometimes called "bending width", means the distance between the two extremities of a bend.

If the product is programmed on the PRODUCT NUM or BEND NUM page, the bending length must be entered by the operator. This value is indispensable for the software to be able to automatically calculate the pressure, the crowning and or the axis separation (Z1 and Z2) of the machine.

With the 3D software version and if the programming is realized in 3D, this value is treated automatically by the software.


LANGUAGE

Pages: WELCOME or MACHINE PARAMETERS

The software generally possesses a choice of several languages. The composition of these languages varies depending on the manufacturers request.

To switch languages:

Call the WELCOME page.

Key on position 2.

Place the cursor on the LANGUAGE field.

Press the key or click right to display the round robin list with the available languages.

Place the cursor on the language required.

Validate the selection using the key.

LEAVING THE SOFTWARE To switch off he machine proceed as follows:

For safety reasons: Lower the machine beam in to the tools or on to the blocks of wood or metal.

Stop the main motor.

Press the MENU key and select QUIT.

Validate with the key.

In the new window select TERMINATE.

Validate with the key.

Wait until the screen of the DNC becomes black and gives the message EXECUTION TERMINATED. Under Windows, the DNC will automatically leave Windows and give a message when the system is ready to switch off the supply.

Switch off the mains supply to the DNC or the machine.

DEFINITIONS PAGE 49

On a PC proceed in the same way or:

Press simultaneously the and keys.

Click on TERMINATE.

LEG Page: BEND 2D

Allows to select a different leg than the one displayed for the current sequence. See also Bending Order and BG (Backgauge) or STOP.

Select the required bend using the and key.

Leg on the 0 face

Place the cursor in the LEG field.

Introduce the N° of the face which must be resting on the back gauge (3 in this example).

Press the key to validate the modification.

Modified leg


LENGTH Page: PRODUCT NUMERICAL

This field expresses the length of a segment (see examples in the User Manual) and indicates that you are in L-alpha mode. That is a length is entered, then the corresponding angle, the following length, the angle, etc.

Sometimes the drawing which is used as a basis for the realization of the product does not allow to program easily in the L-alpha method. You can switch to the LU / LW cotation method using the LENGTH round robin list and thus program in coordinates.

LULU

LW

LW

This is a facility which unfortunately is not standardized. The results can thus vary slightly depending on the case.

LOW SPEED DISTANCE Page: BEND NUM

Allows to define that only a portion (expressed in %) of the upward movement between the lower dead center and the clamping point will be carried out in low speed, the remainder of the upward movement being done in high speed. If BENDING SPEED has been programmed and LOW SPEED DISTANCE is not programmed, the upward movement up to the clamping point is carried out in low speed. (= 100%).

MACHINE PARAMETERS Pages: MACHINE PARAMETER

These pages contain the parameters necessary for the functioning of your machine. It is very important to have a backup copy on diskette (see Data Transfer). If any problems occur, you will save a lot of time if you have to re-introduce them.

Under no circumstances should the machine parameters be modified without the consent and the support of the machine manufacturer.

Erroneous programming can cause important damage to the material or render the machine dangerous.

DEFINITIONS PAGE 51

MAINTENANCE Maintenance of the numerical control is restricted to the changing of the filters and the cleaning of their housing at regular intervals.

Change of filters

It is important to regularly (once per month) change the filters of the fans of the numerical control. If this maintenance is neglected, the numerical control might build up exaggerated heat and cause damage which can sometimes be irreversible.

Interrupt the main power supply.

Remove the 4 screws of the protection grid.

Change the filter.

Install the protection grid again.

Cleaning of the DNC

Interrupt the main power supply.

Clean the keyboard, the casing and the rear panel with a humid cloth and some liquid soap.

Dry with a clean and dry cloth.

Never use alcohol-based products nor solvents (trichlorethylene, thinner, acetone or the like).

MANUAL ADJUSTMENT OF THE BACKGAUGE

In many cases, the backgauges are not equipped with Z axes enabling lateral displacement of the gauge fingers. In other cases, the operator must change the gauge configuration by hand or add some accessories. To do this, he had to either intervene from behind the machine, or else stretch his arms across the machine below the beam. In order to facilitate this task and to provide increased safety, it is now possible to program specific positions for the X and R axes and/or auxiliary functions in GAUGE management mode. The purpose of this is to place the backgauge forwards above the die (provided that the machine allows for this possibility), so as to enable the operator to carry out his task easily and without danger staying in front of the machine.


Ideally, the machine manufacturer would conceive a mechanical or electric/pneumatic system that unlocks the gauge fingers within this adjustment position, and locks them again once the gauge is leaving this location. The gauge positions for this operation can be programmed in the machine parameters page called SPECIAL CYCLES.

The beam must be located in its max. TDC. When the numerical control is in semi-automatic or automatic mode, the operator activates this special cycle from the BEND NUM page by means of the ADJ.GAUGE function (ACTION menu).

The operator will then have to confirm each step of this cycle by clicking inside the appropriate dialogue window.

At the end of the cycle, the gauge returns to its original location.

MODIFYING THE ORIGIN OF THE AXES

Page: MACHINE INITIALIZATION DNC/ENC

General remarks:

This page allows to modify the origin of the axes of the machine, to consult the position of the axes (POSITION field), the index (INDEX field) and the limit switches (LIMIT+ and LIMIT- fields).

The second part dealing with erasing the memories is dealt with in the Erasing Memories section.

It is understood by "modification of the origin" (also called "setting an axis") to impose a value (at the moment of the operation) in the electronic position counter of the numeric control. This operation is used to correspond the mechanical position of the axis with the position of the electronic counter.

This procedure is usually done for the stop axes or the auxiliary axes. For the beam, the latter executes automatically during indexation of the beam.

Setting an axis is most often used to correct a shift of the back gauge. That is to arrange that when the X axis indicates 0.00 on the position counter, the backgauge is situated exactly on the bending line (this definition is valid for the LEG type of stop). If this is a temporary change (caused by a shifted tool for example), it is recommended to use corrections rather than setting the axis.

DEFINITIONS PAGE 53

Attention: certain manufacturers equip the back gauge with an index. In this case modifying the axis origin will only have a limited effect just until the next indexing. If you have to permanently modify the origin of an axis, please contact the machine manufacturer.

Setting an axis modifies the origin of the axis. If this operation is incorrect, it can damage the machine and/or the tools. The axis can for example enter into collision mechanically with another element. In the least case, the products produced will be inexact. Setting an axis must thus be done with precaution. The person who undertakes this operation must be perfectly aware of the consequences.

To modify the origin of the axes, proceed as follows:

Check that the axis concerned is no longer in movement.

Change the numerical control to programming mode.

Access the MACHINE INITIALIZATION page.

Key on position 3.

Place the cursor on the required axis in the REQUESTED column.

Introduce the new position.

Action menu: Select VALIDATE. The new position is displayed in the POSITION column.

To control the new origin of the axis proceed as follows:

Remain on the MACHINE INITIALIZATION page.

Change the numerical control to manual mode.

Place the cursor on the required axis in the REQUESTED column.

Introduce a value to be reached.

Press the key on the front panel. The axis must move to the requested position.

Control the result and correct if necessary.


PARAMETRIC PRODUCT

Function:

Possible only in 2D mode.

Enables a simply and rapid modification of a given and repeated profile by programming only predefined parameters.

On the basis of a product created in PRODUCT NUMERICAL, the operator has access to the modifications of the product, but only on parameters which have been defined with minimum and maximum values in the parametric product. The activation or disactivation of this function requires the key in position 3.

Activation of the function

Parametric product

Call the MACHINE PARAMETERS.

With the help of the and keys, display the above presented window and select the option YES next to the Product parametric field.

Create a parametric product

To create a parametric product, proceed as follows:

1. Creation of the numerical product in the usual manner.

2. Definition of the parameters.

3. Activation of the parameters.

4. Memorization of the product.

5. Working with the parametric product.

DEFINITIONS PAGE 55

Step by step:

Press the function key PRODUCT ( ) and select PRODUCT NUMERICAL.

Below, a model profile of a product that often will be manufactured, but whereof certain parameters have to be modified, according to the demand.

Example of a profile

Press the function key PRODUCT ( ) and select PARAMETERS PRODUCT NUM as below.


The following window opens:

The parameters A to H are those 8 parameters which afterwards can be modified.

Columns: Caption: enables to briefly describe the modifiable parameter. Min, Max, Suggested enable to fix limits and a default value.

Decide and fill in the fields of the parameters you wish to make modifiable.

Associate the defined parameters with the different faces and angles

you wish to change. By opening the choice list, choose in the concerned field the variable parameter which will be associated with this field.

Click right or to select the parameter to be associated with the face.

DEFINITIONS PAGE 57

For example:

Face 1 associated with parameter A.

Faces 3, 5 and 6 associated with parameter B.

Face 4 associated with parameter C.

Angle face 2 associated with parameter D.

After having finished the definition of the parameters, it is advisable to activate them, in order to make the product parametrable.

Activate the parameters. PARAMETERS: ACTIVE.

Press the function key PRODUCT ( ) and select PRODUCT NUMERICAL.

The product numerical page has now changed, only the previously defined parameters are displayed and modifiable.


Working with a parametric product

As for a normal product, place the cursor on the VALUE field of the parameter you wish to modify. On the profile drawing, a circle indicates the face associated with this parameter. Enter the new value and leave the field.

The system recalculates automatically the new profile as well as the new unfolded length.

If you wish to change other values, or to modify the product profile, you have to disactivate the PARAMETERS function in the PARAMETERS PRODUCT NUM page.

DEFINITIONS PAGE 59

PRODUCT GROUPS

Page: PRODUCTS GROUP via PRODUCT menu.

This page allows to create groups of products in order to realize sets.

Definitions

A group is represented by a list of product numbers and typically corresponds to an assembly of several parts.

Any one product can be part of several groups.

In a given group, a product can be present several times.

During execution of a group, the products can be chained either automatically, or only upon the operator's request (manual chaining).

It is possible to define several groups. The groups must be given a number which is greater than 90000.

A "quantity needed" and a "quantity done" can be assigned to each defined group.

Chainings:

1. Automatic chaining: The parts are produced in the quantity and in the order in which they appear within the group. The groups are produced one after the other until the required quantity has been reached.

2. Manual chaining: After each produced part, the operator explicitly designates the next part to be carried out.

In the example above the DNC executes twice the product 1 (24031), then once the product 2 (24033), and finally five times the product 3 (24034), and then recommences 56 times.

24031

2 x 1 x

24033

5 x

24034

56 x


T o create a group of products:

Column PRODUCT: enter the product number (the product must exist).

Field QUANTITY NEEDED: enter the number of sets required.

Field QUANTITY DONE: enter the number of sets which have possibly already been produced.

Memorize the group under a number between 90'000 and 99'999.

The function key DRAWING GR. (only 3D version) displays graphically the outline of the products (for as much as these products were created in 3D) forming the group.

The AUTOMATIC PRODUCT CHAINING field indicates to the DNC that it can automatically chain the products in the order described in the table (see example above).

The MANUAL PRODUCT CHAINING field causes that the DNC effectuates the number of products specified in the table, then at the end of that series it displays the PRODUCT GROUP page with the cursor on the PRODUCT column (even in automatic mode). The operator must then select

another product and press the key to load and execute the said product.

24031112 x 56 x

24033280 x24034

The NEXT GROUP field is only an information field which allows to specify to the operator the following group of products to be realized.

Working example in the PRODUCTS GROUP page

Edit a group composed of a set of products (make sure that all the products have been defined beforehand).

Pass in automatic mode . If the group contains any errors, the message "INCOMPLETE GROUP" appears on the screen. It is possible to choose the first product to be executed by positioning

the cursor on the product before pressing the auto key.

The semi-auto and manual keys interrupt the execution. In order to allow that the execution can be resumed according to the chaining mode, it is necessary to memorize the group in the moment of interruption (this will make sure the quantities needed and the quantities done be saved).

DEFINITIONS PAGE 61

PRODUCT INFORMATION

Almost all pages: ? or ! Field (situated in the left hand corner of the screen).

For each product saved, commentaries and / or images can be annexed in order to furnish the operator specific information for that product..

In this way the information is permanently available.

Two main possibilities are offered:

Text Text only In this case only the small window appears.

Text and images Text and images In this case the complete page is displayed. With this choice, it is possible to display photographs, drawings or other graphical information. The software automatically recognizes the DXF, IGES and PCX file formats (see PCX Files or DXF and IGES Files which follow in this chapter).


See an Information

Move the cursor on to the ? or ! symbol and press the key or click. If information is available the ? field changes into a ! field.

It is possible to display the PRODUCT INFORMATION window automatically (only if it contains a commentary) each time the operator calls a product. To do this, you must program in the machine parameters, on the CONFIGURATION page, the parameter Automatic display of product information at YES.

Creating an Information (text only)

Display the PRODUCT INFORMATION window (click on ?).

Click on VISUALIZE and select EDIT (on the DNC: key on 2).

Select SIMPLE in the round robin list field.

Create the text. At the end of each line go to the next line by pressing

the key.

Click on EDIT to go in to VISUALIZE mode then leave.

Creating an Information (text and images)

Programming info and / or images

In the procedure described below, it is accepted that the photographs (drawings or images) have already been created and their location is known (see also Active Peripherals). For the creation of numerical photographs or images etc., you must refer to the apparatus documentation as well as to the software associated with the apparatus (numerical camera, scanner etc.) or to the drawing software for the creation of graphical information.

It is recommended to store the images on a server (connected to the DNC by a network) and not in the internal memory of the numerical control, as image files occupy a lot of space.

DEFINITIONS PAGE 63

To introduce the images:

Display the PRODUCT INFORMATION window.

Click on VISUALIZE and select EDIT (on the DNC: key on 2).

Select WITH COMPLEMENTS in the round robin list field.

Create the explanation text.

Position the key on 1 or 0 or click on EDIT and select VISUALIZE to secure the message.

Introduce on one line the name of the graphic file (1 per line)

With or without generic characters (* or ?). See further below the explanations about generic characters and where the software has to search the image files. In the above example, >P256.PCX indicates to the software that it must display the image in the P256.PCX file when the PRODUCT INFORMATION page is first called. To display the PLI3.PCX and PLI4.PCX images, position the cursor on the relevant line and select DISPLAY via the Action menu.

Click on EDIT to go to VISUALIZE mode then leave.

The symbol > indicates that the image which follows will be displayed automatically. If the file name is indicated alone, the software will go and search for it on the path described by the peripheral designated under the COMPLEMENTS IN field (See Active Peripherals). If the complete path is furnished, the software ignores the peripheral.

The generic characters * and ? allow to select several files.

To display them position the cursor on the line and press the or key.


For example *.PCX will display all the PCX files which are located in the directory designated by the path of the images peripheral.

1= Line which designates the file to be displayed.

2= Name of the peripheral where the files are located.

3= Name of the file currently displayed on the screen.

4= Number and quantity of files if the characters * or ? are used.

PCX Files

The software allows the display of images in PCX format with 16 or 256 colours. You can use for example an electronic camera and directly display these photographs or other drawings in PCX bitmap mode furnished by a scanner or graphics software.

DXF or IGES Files

The software recognizes automatically files in DXF or IGES format. Only files in 2D are recognized. Depending on the software used to create these files, it is possible that some parts of the drawing are ignored or deleted by our interface. To obtain more information about the reading possibilities of the DXF or IGES files, request the CYCAD manual which describes the possibilities, compatibility and limits of interpretation.

Example of reading a DXF file

DEFINITIONS PAGE 65

PRODUCT MANAGEMENT

Pages: most pages.

In all pages which mention the product number (PRODUCT field top right), the searching, the saving or the deleting is normally possible. This operation is done in the default memory (generally INTERNAL). However an other memory could have been selected as default memory. In this case these operations will be done in the memory designated by the active peripheral (see Active Peripherals).

It is possible to carry out these operations in a memory other than the default memory. However this possibility only exists on the PRODUCT LIST or TRANSFER pages.

Saving, searching or deleting a product on a floppy or a network

Page: PRODUCT LIST

Place the cursor on the PRODUCTS AND GROUP IN INTERNAL field.

Choose the required peripheral.

Next call, save or delete the product.

The authorized range for saving products goes from 1 to 89'999. The numbers 90'000 to 99'999 are reserved for the product groups (see Product Groups).

Number of products in the current peripheral

Current peripheral

To facilitate searching, it is recommended to add a drawing code before saving (see also Searching for Products according to Criteria and Active Peripherals).

Copying a product

Call the product to be copied.

If necessary change the peripheral.

Program another product number and save it.


Marking products

To facilitate the transfer of products, it is possible to select in the current peripheral the products to be transferred.

A "marked" product is designated by a small triangular mark next to the number.

The marked products are automatically reported on the TRANSFER page where they appear in the transfer list. (See Data Transfer).

To mark or "unmark"products:

Cursor on the required number.

key or click to mark or unmark.

Use the ERASE MARKS command of the Action menu to delete all the marks.

Remark: Product marking is limited to 48 products.

PROGRAMMING A PROFILE

See examples in the User Manual.

PROGRAMMING ON BEND NUM

To program a profile on the BEND NUM page, proceed as follows:

Call the BEND NUM page

Empty the programming memory. (choice ERASE PRODUCT in the ACTION menu)

Enter the thickness, the sigma and the type of material.

Cursor on the PUNCH field. Press the key or click right to display the punch list, choose the required punch and validate with the

key.

DEFINITIONS PAGE 67

Cursor on the DIE field. Press the key or click right to display

the die list, choose the required die and validate with the key.

Enter the required angle.

Enter the value of the back gauge.

Enter the values of the other axes (R, Z, etc.).

Enter the other functions of the sequence (Bending force, TDC, SP, Axes wait, etc.).

To create a second sequence: select COPY BEND in the Action menu. This operation copies the current sequence into the next sequence with the same values. Simply modify the values of this new sequence and repeat the operation for the following sequences.

See also the examples in the User Manual.

PROGRAMMING WHILE WORKING

The DNC 80 / 800 / 880S / 900 / 1200 / ModEva allow to program the numerical control while working. To this end: Program the machine parameter Programming while working (page Preferences) = YES.

Pass on automatic mode: the LED of the key is lighting up, the DNC is working in automatic mode. The operator can bend.

Double mode

Pass on double mode by pressing the programming key . The automatic LED is still lighting up and the LED of the programming key is also active. From now on it's possible to use the numerical control for programming, meanwhile the machine can continue to execute the current product.

All the programming functions are accessible. Memorize, search, delete, transfer, etc.

Return to single mode

From the double mode (visualized by the two LED's Automatic and Programming simultaneously lighting up) press either the Programming key: In this case the product in programming process is displayed, or Automatic: The product in executing process is displayed.


Q.NEEDED. ___ DONE.___

Page: BEND NUM

This field is a product counter. When this software functions on a numerical control this counter displays the number of products already done.

To activate this counter:

Enter the number of products required in the Q.NEEDED field. and

The quantity already done in the DONE field, or the value 0 if no product has been created.

As soon as the two values are equal the numerical control furnishes a signal. Depending on the manufacturer this signal is treated or not to stop the machine cycle.

The values in this counter are not memorized with the product. You must change or erase these values when you call a new product.

To cancel the counter, delete the DONE field.

REFERENCE YR COR.

Page: TOOL BEND This field allows to correct the tool pair reference.

This correction is memorized with the product and not with the tools.

This correction also modifies the safety point, the pinch point and the bottom dead centre. This correction is to be used with precaution. An error in this field can impede the correct functioning of the machine, cause important material damage or make the machine dangerous.

PSS

PCV

PCT

0 Référence

PSS

PCV

PCT

0 Référence 0 Réf.

PSS

PCV

PCT

Pinch point before correction of the reference.

Pinch point after correction of the reference.

It can be observed in this diagram that the correction of the reference modifies all the switch points as well as the bottom dead centre.

DEFINITIONS PAGE 69

SCREEN CAPTURE

The ModEva/DNC 880S software allows to copy screens easily to create documents or other information (offers, etc.).

To capture the screens proceed as follows:

Start up the word processor or other software into which you wish to import the screens.

Start up the ModEva/DNC 880S software.

Capture the active window by pressing the and PrintScreen keys.

The image is transferred to Windows clipboard.

Activate the software into which you want to insert the capture by

pressing simultaneously the and keys once or several times, according to your current application.

Insert the image using the Paste function in the Edition menu of your word processor. Reduce or cut the image according to your needs.

You also can use the screen capture tools specially destined to this type of application and which can immediately convert the colour captures in grey levels. These softwares are for example Corel Capture (included in Corel Draw) or Hardcopy, a freeware software available on Internet www.hardcopy.de.

BLACK AND WHITE, COLOUR

In order to facilitate the creation of illustrated documents with screen copies, it is possible to switch the ModEva/DNC 880S software to black and white.

Proceed as follows:

Call the machine parameters, TESTCARD AND SCALES page.

Select BLACK/WHITE in the TEXT AND DRAWINGS field.


http://www.hardcopy.de/

SCREEN PRINTING

It is advised to switch the software to BLACK/WHITE before starting to print.

Selecting a printer

Call the machine parameters, TESTCARD AND SCALES page.

Windows Version

The printer selecting under Windows is not effective. It is the printer defined by default in the "Parameters – Printers" menu of Windows which determines the printer. Attention: if you change the printer ("Parameters – Printers" menu of Windows) while ModEva/DNC 880S is working, you have to leave and to start ModEva/DNC 880S again, in order that the new printer is taken into account.

Select the destination. If the line is empty, PRN is used by default.

You can enter LPT1, LPT2 or the name of a file. By entering NUL in the destination field, printing is prohibited and the relevant line in the ACTION menu will disappear.

Printing

To print a page:

Select the relevant page.

DEFINITIONS PAGE 71

Call the ACTION menu and select PRINT SCREEN.

To print all the parameter pages:

Go to the parameter page from which you wish to start (for example the first page of the N2X parameters).

Call the ACTION menu and choose PRINT PARAMETERS. The software will print one after another all the parameter pages (including sub-pages). You can stop printing by pressing any key (for example at the end of the N2X parameters). Printing does not stop immediately, the current page is terminated.


SEARCHING FOR PRODUCTS ACCORDING TO CRITERIA

Page: SEARCH PRODUCTS/CRITERIA

This page allows to search for products stored in the peripheral selected in the PRODUCT LIST AND GROUPS IN field. The selection criteria can be combined. When 2 or several fields listed below are filled, the product searched for must satisfy each of the programmed criteria. It is a condition AND (one and the other fields.....).

Search criteria Are used as search criteria: the date of memorization, the product number, the material thickness, the code number (drawing), the bending length, the tools and the unfolded length. Small letters are distinguished from capital letters.

Attention: searching with the criteria PUNCH or DIE, is only done on the "main" tool which is programmed on the PRODUCT NUM page. This means that if a product is programmed using only BEND NUM page and you wish latter to search for this product using the tools, you must program the "main" tool again on the PRODUCT NUM page, without which the search will not find this product.

If the complete contents of the code number is not known, it is possible to use the special characters (wildcards) to replace the unknown characters (for the other fields if they are filled, the contents must be known entirely).

Any character (1 only). ?

* None or several characters.

In the example below, it is supposed that the search criteria is only the drawing number. It goes without saying that the “wildcards” can be used in the other fields.

Example Explications

A product is to be searched for whose code starts with an A, then an unknown character, , a C and then several unknown characters. (e.g. ABC, ACC22, AmCh22, A6CProduct33).

A?C*

*22 A product is searched for whose code ends with 22. (e.g. ACC22, AmCh22, 22, Product22)

DEFINITIONS PAGE 73

A?C*22 A product is searched for whose code begins with an A, then an unknown character, a C and ends with 22 (e.g. ACC22, AmCh22, AVCProduct22).

*A?C*22 As above but A?C is not necessarily at the beginning (e.g. ACC22, AmCh22, PARC22).

*A?C*22* As above , but 22 is not necessarily at the end. (e.g. ACC22, AmCh22, PARC22bis).

MEMORIZATION DATE

The memorization date of a product can be used as a search criteria for products. To do so a time span is specified in which the search for information is made.

If the introduction syntax is wrong a message appears in the interactive field "SYNTAX DATE!".

The introduction format is DD/MM/YY (D=day, M=month, Y=year).

On the numerical control the or key can be used to separate the days, months and years.

The choice of the type of separation is configurable on the WELCOME page.


SECTION

Pages: PRODUCT NUM and BEND 2D

A section is an imaginary line which "cuts" the product lengthways and which defines a profile. It is this profile that the operator sees on the BEND 2D page.

A product can have several sections (in the example below, 2 sections). Each section is considered as a separate profile.

The operator will mainly use the PRODUCT NUM page to program one or more profiles (see the manual User Guide and Programming a profile in this manual).

The creation of the sections is automatic if the product is programmed in 3D.

45

SIGMA

Pages: PRODUCT NUM and BEND NUM

Enter in this field the value in Kg/mm2 of the material used to effectuate the product.

Example:

Steel AC37-2 K 38,22 Kg/mm2

Stainless steel X5CrNiS18 8 51 à 71 Kg/mm2

Aluminium ALMg2,7Mn 24,97 Kg/mm2

DEFINITIONS PAGE 75

SIMULATION CRITERIA

Page: BEND 2D (choice of ACTION menu)

Before starting an automatic search for the range of bends, it is possible to define a certain number of criteria which the system will take into account when it calculates the bending order.

The simulation criteria are always valid such as they were defined the last time.

There are two groups of simulation criteria:

These are preference criteria. They are applied as far as possible. Not respecting these criteria does not prevent the software from finding a solution.

SECONDARY

These criteria are imposed. The software will search for a solution which respects impera-tively these criteria. These main criteria can lead the software in to not finding a solution.

MAIN

Limit the number of bends (already realized) situated between the backgauge and the bend to be realized.

NB. MAX. OF BENDS AGAINST BG

The system will search for a solution which allows always to leave a minimum length (expressed in % of the total unfolded length) on the side of the operator.

MIN. LENGTH AGAINST OPERATOR/ TOTAL L


Axe deretournement

Axe depivotement

Axe debasculement

= retournement+ pivotement 180°

SwingFlipover

Return

MINIMUM OF SWINGS The software will choose the solution which demands the least possible number of swings.

The software will choose the solution which demands the least possible number of returns.

MINIMUM NUMBER OF RETURNS

MINIMUM NUMBER OF FLIPOVERS

The software will choose the solution which demands the least possible number of flipovers.

OPTIMUM MANIPULATION

The software will choose the sheet manipula-tions which are the most favourable for the operator, as a function of the sheet thickness and its relation length / bending length. The choice of this option has priority over the previous criteria.

SECTION ERROR ON FACE

The software arranges that the section error is located on the specified face.

The software will search for a solution allowing to attain the maximum precision between the specified faces.

PRECISION BETWEEN FACE -- AND --

Normally the software does not except that the product knocks against a part of the machine during bending. When this criteria is validated, the software accepts that a part of the product knocks against a point of the machine with a flexibility in % of the length of the sheet between the bend and the end of the product on the side of the profile which enters in to collision.

FLEXIBILITY

DEFINITIONS PAGE 77

100

60

40

40mm = 20% of 100 + 60 + 40

In this example, a flexibility of 20% authorizes the sheet to theoretically "penetrate" 40 mm in to the punch.

Tip If a product is very complex, it can be interesting to program 100% of flexibility to be able to annul the collision criteria, in order to be able to visualize the bending order proposed by the software. This criteria is then reduced to an acceptable value.

STOP AGAINST A SLOPE SEGMENT

By default (NO), the system prohibits the situation illustrated below

and only allows the stops

or

or

By programming this option YES, the software will also authorize the stop on angles greater than 90° (1st case above).

To validate the criteria chosen for a simulation, click on the QUIT field or press one of the function keys to access a new page.


SP (SWITCH POINT)

Page: BEND NUM

The switch point (SP) is a distance expressed in millimetres starting from the pinch point. It defines the point at which the beam passes from the approach speed to the bending speed.

This possibility is used when you wish to have a long and slow approach to the sheet for a specific work.

If it is not programmed, this point is automatically calculated so that the beam has changed to the bending speed before arriving at the safety point.

PCV

SP (switch point)

If the sheet is approached as shown in the figure above, the punch will reach the surface of the sheet on high speed. By modifying the SP, the switch over can be regulated in such a way that the sheet is approached in the bending speed.

DEFINITIONS PAGE 79

SPECIAL BENDS

To carry out certain products, it may be necessary to use special bends.

The software is capable of handling several types of bends.

BEND 2D page

The following choices are available:

NORMAL Conventional bend, without any particularity.

PRELIM. Designates the current bend as being a preliminary bend.

FINAL Designates the current bend as being a final bend, i.e. it terminates a former preliminary bend.

UNBENDED To be used in the BEND NUM page only. This option only indicates to the operator that the bend is in fact an unbending process. The software does not react in any particular way.

CLOSED Same remark as above for "Unbended".

FICTITI(OUS). Same remark as above for "Unbended".

PRELIMINARY / FINAL BEND

To illustrate the use of a preliminary and a final bend, the example of an "S"-shaped product is used. Typically, this product is not feasable without a preliminary bend.


Enter the data as follows:

PRODUCT NUM page

BEND 2D page

In the BEND 2D page, it is necessary to manually define the bending order because this product is not feasible without a preliminary bend.

Proceed as follows:

Cursor on FACE, enter 1.

The software indicates the possible stop positions (PR. STOP 0 5 on the first line).

Cursor on LEG, enter one of the suggested stops (0).

Press Pg Dn

.

DEFINITIONS PAGE 81

Position the cursor on the number (2) of the BEND field.

Select the INSERT BEND function (via the Action menu) to insert the preliminary bend sequence. It can be seen that the bending sequence now contains 5 bends (also see Inserting a Sequence in this manual).

In the round-robin list of bend types (default: NORMAL), choose

PRELIM. Enter the desired preliminary angle in the new field ___._° (135.0° in this example).

With the cursor in the FACE field, enter the face (2) for the preliminary bend.

With the cursor on the LEG field, enter one of the suggested faces (1 in the present example).

Select the SIMULATE BEND function (via the Action menu) to see the bend.

Press Pg Dn

to move on to the 3rd bend.


With the cursor on the FACE field, enter the face (4) of the current

bend.



Press Pg Dn

.

With the cursor on the FACE field, enter the face (3) of the current

bend.



Press Pg Dn

for the last bend.

DEFINITIONS PAGE 83

In this bend, the preliminary bend made before must be terminated. You must thus indicate to the software that this is a final bend, and also specify the corresponding bend (face).

In the round-robin list of bend types (default: NORMAL), choose FINAL.

With the cursor on the FACE field, enter the face (2) of the preliminary bend.


Select the SIMULATE BEND function (via the Action menu) to see the bend. The product is now finished.

Here are some remarks regarding this example:

It is also possible to change the type of stop.

Several "preliminary" / "final" bends may exist in the same section or product.

Hint If you forgot to insert the preliminary bend sequence, and the sequence for the final bend is missing, it is not necessary to start all over again. You can simply insert a sequence at the end of the product by proceeding as follows:

By means of the Pg Dn

key, go to the last sequence (unless you are already there).

Place the cursor on the BEND field (in this example 4) and enter 5.

Select the INSERT BEND function (via the Action menu).

Hint To carry out a U-shaped profile with long side flaps, it is generally necessary to make a preliminary bend which must be "unbended" in the final stage.


Proceed as follows:

In the PRODUCT NUM page, program two lengths corresponding to

half the segment on which the preliminary bend will be made.

Program an angle of -180.0° for the "unbending" bend.

In the BEND 2D page, enter a preliminary bend of 135°; on the last sequence, enter a FINAL bend (as described earlier). Note: in the BEND 2D page, the drawing appears inverted. This is a known problem which has not yet been solved.

In the BEND NUM page, correct the angle of 180° by a value < 180°, in order to compensate the springback. If this operation is not done, the calculated value of Y will be equal to the PP (pinch point), and in this case the DNC considers this sequence as a sequence without bend. See Sequence without Bend.

START AXES/AF Page: BEND NUM.

This function allows to choose the starting moment of the axes and auxiliary functions according to two predefined modes.

AUTO The axes and auxiliary functions start according to what has been determined in the machine parameters, but at the latest when the beam reaches the top dead centre. The departure of the axes differs according to what is programmed in the machine parameter 60 Axes starting point/FA.

EXTERNAL The axes and auxiliary functions start when a command is given by the operator. This command will be either: - a descent command (via the pedal or two handed post). In this case the beam will not descend but the axes and auxiliary functions will position themselves, a second descent command will be necessary to move the beam.

- or pressing the key on the front panel, - or by activating the External Start input of the numerical control which, for the user, can be a button especially foreseen at this end by the machine manufacturer.

DEFINITIONS PAGE 85

TDC (TOP DEAD CENTRE)

Page: BEND NUM

The top dead centre (TDC) is a distance expressed in millimetres starting from the pinch point. It defines the point at which the beam will stop during its ascent cycle.

The top dead centre is calculated automatically when an automatic search for the bending range is effectuated. However the operator remains free to modify this value on the BEND NUM page.

TDC (Top dead center)

If no value is programmed, the beam will rise to the maximum distance of its course as defined in the machine parameters.

The beam will not go any higher than the maximum top dead (FDC+) programmed in the machine parameters.


TOLERANCE

Page: PRODUCT NUM

This field is only displayed (calculated) if the operator imposes a bending radius. Typically the tolerance will be used when programming with ideal curve.

The tolerance is displayed after the start of the CALCUL.

R1 = bending radius entered by the operator.

Ri = Bending radius calculated by the system.

In the case of a single bend, if the operator imposes a radius (See Internal Radius and Ideal Curve (CR)), the tolerance indicates the value of the above illustration:

Ri = Theoretical bending radius requested by the operator.

A = Apothem

If the value in the CR field is between 4 and 99, this tolerance indicates the difference between the chord enclosed by two bends and the theoretical arc of the circle, that is the difference between the theoretical radius Ri and the apothem A of the chord.

DEFINITIONS PAGE 87

TOO SHORT SEGMENT AUTHORIZED

Page: TOOL BEND.

This is a safety feature which is tested when passing to AUTO or SEMI-AUTO mode. Depending on the case, it generates an error message which displays the TOOL BEND page and points the cursor in this field.

This message warns the operator that the segment is too short and does not rest correctly on the two edges of the die throughout bending.

Segment too short

The operator can choose to ignore this control. Three options are available:

Default situation. A control of the segment length is made on the current bend.

ON THIS BEND / NO

No control on the current bend. ON THIS BEND / YES

No control for the whole of the current product.

GLOBALLY

TOOLS

When a product is created, tooling pairs can be composed as required, which are valid for the whole product, or different for each bend. However when executing the product, the tools selected must be located in the memory pointed by the active peripheral (see Active Peripherals).

As for other data, it is possible to store the tools elsewhere than the INTERNAL memory of the software.


PROGRAMMING PUNCHES

Page: PROGRAMMING PUNCHES

Three basic forms are available for programming. These forms are selected in the TYPE (0, 1 or 2) field

0 1 2

When all the data of a punch are programmed, the tool appears in blue.

When the basic tool is displayed, this is recognizable by its brown colour.

When a tool is programmed, it is possible that the position of certain values is hard to define. To visualize the predefined basic form, just click in the small box (D or E) situated on the top of the drawing. The tool then takes its basic form recognizable by its brown colour.

Access the PROGRAMMING PUNCHES page.

Define the type of basic punch to be programmed in the TYPE field.

Indicate in the INVERSED field, if the punch is inversed.

Complete the other dimension and safety data.

Choose if necessary the peripheral (IN field) in which you wish to store this tool.

Enter the name (numeric or alphanumeric) of the punch in the PUNCH field.

Memorize the punch. If the interactive message EXIST appears, there is already a punch with this name in the peripheral, you must either choose another name for the tool or delete the other tool and memorize again.

Some definitions of the fields on this page

This field indicates to the software if the leg face of the punch is the value H1 or H2. This choice must be identical for all the tools of that machine. The height H1 or H2 chosen as reference must be as exact as possible. The bending results depend on this information.

REF

DEFINITIONS PAGE 89

The choice H1 or H2 depends on the manufacturer of the machine. This choice is thus imposed by the manufacturer. It is imperative to respect this choice, otherwise there is a risk of collision and damage to the tools.

This value indicates the maximum force supported by the tool. If the pressure calculation for the current product exceeds this value and the bending length is known, an interactive message informs the operator.

LINEAR FORCE <


If NO (default) the DNC effectuates a depth collision (see Depth Collision authorized), the operator must validate the "collision" if necessary, case by case on the TOOLS BEND page. If YES this authorization is implicit for that tool.

Prohibit the X axis from passing this limit (to avoid a collision with the punch during bending for example).

SAFETY XS

XS

XS

Die safety XS

Punch safety XS


PROGRAMMING DIES

Page: PROGRAMMING DIES

When all the data of a die are programmed, the tool appears in red.

When the basic tool is displayed, this is recognizable by its brown colour.

When a tool is programmed, it is possible that the position of certain values is hard to define. To visualize the predefined basic form, just click in the small box (D or E) situated on the top of the drawing. The tool then takes its basic form recognizable by its brown colour.

Access the PROGRAMMING DIE page.

Indicate in the INVERSED field, if the die is inversed.

Complete the other dimension and safety data.

Enter the name (numeric or alphanumeric) of the punch in the DIE field.

Memorize the punch. If the interactive message EXIST appears, there is already a punch with this name in the peripheral, you must either choose another name for the tool or delete the other tool and memorize again.

Some definitions of the fields on this page

Height H The height H must be as exact as possible. The bending results depend on this information.

Ve Width of the bending V. According to the cotation defined in the drawing below.

RADIUS r Die radius according to the drawing below.

DEFINITIONS PAGE 91

This value indicates the maximum force supported by the tool. If the pressure calculation for the current product exceeds this value and the bending length is known, an interactive message informs the operator.

LINEAR FORCE <


If NO (default) the DNC effectuates a depth collision (see Depth Collision authorized), the operator must validate the "collision" if necessary, case by case on the TOOLS BEND page. If YES this authorization is implicit for that tool.

Prohibit the X axis from passing this limit (to avoid a collision with the punch during bending for example).

SAFETY XS

XS

Prohibits the R axis to approach this zone. If this is necessary, the stop will disengage before moving.

SAFETY RS

RS


MODIFYING A TOOL

Pages: PROGRAMMING PUNCHES or DIES

If a tool is modified and in particular the height (which will modify the calculation of the beam position) you must imperatively redo the calculation (CALCUL) each time a product is called which uses this tool and also possible the bending order if the form of the tool is modified

To modify a tool:

Call the PROGRAMMING PUNCHES or DIES page.

Search for the tool to be modified.

Delete the tool.

Modify the required values.

Memorize the tool under the same name.

TOOL POSITIONS

Pages: TOOL MOUNTING or POS TOOLS

The description of the mounting of a tool is described in detail in the User Guide manual, please refer to it.

If you install several work stations, verify that it is possible to work with these tools without any risk of collision or damage.

PUNCH LIST / DIE LIST

This page allows to display the list of punches or dies with their main characteristics.

DEFINITIONS PAGE 93

UNFOLDED LENGTH

Pages: PRODUCT NUMERICAL

The calculation of the unfolded length is realized using the CALCUL action. However if you leave the PRODUCT NUMERICAL page this field is automatically calculated.

The unfolded length is calculated according to the DIN 6935 standard. To obtain these standards, please refer to the competent organizations.

An extract of this standard is given below, an extract which describes the cotation method used for the stretch calculations.

The correction coefficients for the calculation of the unfolded length (according to DIN 6935), can be programmed on the Material page of the machine parameters (see afterwards).

The round robin list DIN, REAL indicates if the displayed value is a DIN value or a value entered by the operator.


DIN

If the DIN option is selected, the unfolded length of the sheet is calculated according to the DIN 6935 standard or corrected by the correction factor of the material (see further on in this paragraph).

REAL

If REAL is selected, the L.UNFOLD field autorizes the introduction of the real length measured on the products. The difference between the DIN calculation and the manually imposed value is distributed proportionally on the different faces.

Correction coefficient of calculation DIN 6935

When the DIN standard does not allow to obtain calculation adapted to the real situation, the software allows the programming of correction coefficients.

The correction coefficients are programmed in the machine parameters on the Material page.

Ten coefficients numbered from 0 to 9 are available for each type of material (Steel, Aluminium, Stainless Steel, Special 1, Special 2).

The correction coefficient which you wish to apply to the DIN 6935 standard is entered in to the K filed. If not programmed the default value corresponds to 1.000. The K factor essentially corrects the DIN calculation in the bend deformation zone (The K factor described here is not the one which is found in the DIN formula).

A judicious use of this field allows to find a solution for each material.

The use of this type of correction is done by selecting the material (STEEL in the example below) and by programming the following field with the number of the correction to be applied (2 in the example below). If the correction factor is used, the DIN field will display the corrected value with the chosen factor.

DEFINITIONS PAGE 95



INDEX

Bending speed 29

Bottoming 30 - A -

Active peripherals 12

- C - Air filters 52

Angle Calibration 20 corrections 16 Calling

Angular a product 73 corrections 17 Capture (screen) 70

Auxiliary functions 23 Change Axes backgauge 52

delayed start 85 filters 52 indexing the ... 46 Characters origin 53 alphanumeric 15

Choice of stops 50 - B -

Cleaning the DNC 52 Backgauge change stop 29 Collision clearance cycle 40 tools 36, 90, 92 manual adjustment 52

Conventions 7 modify 29 retraction 23 Copy special cycle 40, 52 a bend 46

a product 66 Backup 33, 34 a sequence 46 Beam screen 70 does not descend 24

Corrections switch point 79 according to material 31 Bend angle 16 at the bottom of the die 30 angular 17 bending lenght 48 by thickness measure at PP 21 bending order 76 by thickness measurement at the PP 20 closed 80 by thickness measurement at the TDC 18 criteria of bending order 76 by thickness measurements 18 examples of special bends (in U, in Z 80 calibration 20 examples of special bends (in U, in Z) 80,

85 direct 16 of the bending force 31 fictitious 80 of the reference 69 final 80 of the unfolded length 31 order of bends 25 sensitivity BDC 22 preliminary 80 table 31 sequence without bend 24 thickness independent Y1 Y2 22 special 80

Cotation 94 unbended 80 length or LU/LW 51 Bend counter 24

Criteria Bending force 13, 24, 32 date of memorization 73 correction 31 of simulation 76 searching for products 73 Bending order 25

Crowning 32

INDEX PAGE 97

- D - colour signification 9 correction X (tools) 36 Data CR 41 backup of ... 33, 34 crowning 32 transfer 33 depth collision authorized 90, 92 depth collision authorized 36 Date destination 33 and hour (of the DNC) 35 DIN 94 of memorization 73, 74 drawing 37 Decentered tools 36 dwell time 38 free memory 39 Delete 38 global transfer 33 a product 66 L UNFOLD. 94 all the machine parameters 39 L.bending 48 all the products 39 leg 50 all the tools 39 length 51

Die 88, 91 linear force 90, 92 LU/LW 51 DIN 6935 94 memorization date 74

Direct Q.Needed.__Done.__ 69 corrections 16 REAL 94

REF 90 Display reference YR cor 69 DXF file 62 REL 11 PCX file 62 retract B.G. 23 photo 62 Ri 47

Drawing 37 Safety XS 90, 92 section 75 Dwell time 38 segment too short authorized 88

DXF files 62 Sigma 75 source 33 SP 79

- E - start axes/AF 85 Stop 29 Empty TDC 86 the memories 39 tolerance 87

ENC not connected 12 Files PCX & DXF 62

Erase 38 Final bend 80

Erasing Flipovers 77 the machine parameters 39 Force Erasing

admissible force 13 all the products 39 all the tools 39 Format the memories 39 Date and Hour 35

- F - - G - Field Gauge clearance 40

! 62 ? 62 ABS 11 - I - active peripherals 12

Ideal curve 41 alphanumeric 15 bend counter 24 Images 62 bending force 24

Index bending speed 29 new index 46 BG 29

clearance 40


Information 62 Method cotation 94 Initialisation 46

Modify Initialization a tool 93 of an axis 53 leg 50 of the DNC 12 position of stops 50 Insert Modifying a bend 46 axes origins 53 a sequence 46

Mounting Internal radius 47 a tool 93 Interventions on the numerical control 34

- O - - K - Origin

modifying origin of axes 53 Keyboard of axes 53 alphanumeric 15

external for the DNC 48

Keys - P - function keys 8 Parametric product 55 Kg/mm2 75 Create 55

Working with ... 59

PCX files 62 - L -

Peripherals 33 Language 49

Photo 62 Leg 50

Position Length of a tool 93 bending 48

unfolded 94 PP Tolerance in % of thickness 21 unfolded 47 corrections 31 Preliminary bend 80

List Pressure See Bending force of dies 93

Print screens 71 of products 66 of punches 93 Product

counter 69 Low speed distance 51 delete 12 deleting all ... 39 examples 12 - M - information specific to the… 62

Machine parameters 51 management 66 marking 67 Maintenance 52 memorizer 12

Manage several machines 12 non feasible (simulation) 78 search 12, 73 Manual adjustment

backgauge 52 Product Information active peripherals 12 Marking

a product 67 Profile 75

Memorize Programming a product 66 a die 91

on the BEND NUM page 67 Messages tools 88 Depl. X rel. impossible 12 product non feasible 27, 78 Programming punches 89

INDEX PAGE 99

Punch 88, 89 Simulation 25, 76 product non feasible 78

Speed - Q - switch point 79 Quantity 69 Stop 29, 50 Quit the software 49 Stop working 49

Swings 77 - R - Switch point 79 Reference 90

correction 69 - T - Retraction 23 Tolerance 87 Returns 77 Ton/m 13 Rules 7 Tools 88

active peripherals 88 active peripherals 12 - S - admissible force 13

Safety collision 36, 90, 92 backgauge displacement 40 correction X 36 bending force 24 decentering 36 departure of the gauge axes 85 deleting all ... 39 tools collision 36, 90, 92 display of the default model 89, 91

position, mounting 93 Screen Safety XS 90, 92 black-white 70

capture 70 Top dead centre 86 print 71

Transfer 33 Search selecting products 67

a product 66 a product 66

- U - Searching for a product 73 Unbend 27

Section 75 Unfolded length 94 Segment too short authorized 88

Sensitivity BDC 22 - W - Sequence without bend 24 Width

bending width 48Set of an axis 53

Sigma 75


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