EUROturn-12C NCT eng 2013-09-02 · PDF fileSpindle head dimension (DIN 5526 or MSZ 5038) A2 3” Spindle bore diameter Without drawbar 26 mm Front bearing bore diameter 50 mm Max

EUROturn-12C CNC CONTROLLED SUB SPINDLE LATHE

OPERATION MANUAL

NCT Ipari Elektronikai Kft. 1 / 24 Date: 02.09.2013 1148 Budapest, Fogarasi út 7. Tel.: 06-1-467-6300 www.nct.hu


OPERATION MANUAL


OPERATION MANUAL


CONTENTS

1. PREFACE .............................................................................................................................. 5 2. LEGAL STATEMENTS ........................................................................................................ 6

2.1. Warranty statement ......................................................................................................... 6 2.2. Guarantee statement ........................................................................................................ 6 2.3. OSH statement ................................................................................................................. 6

3. TECHNICAL DATA ............................................................................................................. 7 3.1. Workspace ....................................................................................................................... 7 3.2. Headstock ........................................................................................................................ 7 3.3. Slide system ..................................................................................................................... 7 3.4. Spindle drive ................................................................................................................... 8 3.5. Axis drive ........................................................................................................................ 8 3.6. CNC control .................................................................................................................... 9 3.7. Electrical data .................................................................................................................. 9 3.8. Tooling ............................................................................................................................ 9 3.9. Workpiece supplement .................................................................................................. 10 3.10. Parts catcher with bucket ............................................................................................. 10 3.11. Overall dimensions ...................................................................................................... 10 3.12. Storing, operating climate ........................................................................................... 10 3.13. Machine color .............................................................................................................. 10

4. TECHNICAL DESCRIPTION ............................................................................................ 11 4.1. Column and bed ............................................................................................................ 11 4.2. Headstock ...................................................................................................................... 11 4.3. Spindle drive ................................................................................................................. 11 4.4. Slide system ................................................................................................................... 11 4.5. Axis drives ..................................................................................................................... 11 4.6. Turret ............................................................................................................................. 12 4.7. Cover ............................................................................................................................. 12 4.8. Hydraulics ..................................................................................................................... 12 4.9. Centralized lubrication system ...................................................................................... 12

5. ACCESSORIES ................................................................................................................... 13 5.1. Workpiece clamping devices ........................................................................................ 13

5.1.1. Manual chucks ........................................................................................................ 13 5.1.2. Power chucks .......................................................................................................... 13

5.2. Tool holders ................................................................................................................... 13 5.3. Chip management, coolant ............................................................................................ 13

5.3.1. Chip tray ................................................................................................................. 13 5.3.2. Chip conveyor ........................................................................................................ 14 5.3.3. Coolant unit ............................................................................................................ 14

5.4. Optional accessories ...................................................................................................... 14 5.4.1. Electric handwheel ................................................................................................. 14


OPERATION MANUAL


5.4.2. Barfeeder device ..................................................................................................... 14 5.4.3. Parts catcher device ................................................................................................ 14 5.4.4. Different machine colours ...................................................................................... 15 5.4.5. Automatic tool measurement ................................................................................. 15 5.4.6. “C” axis .................................................................................................................. 15

6. TRANSPORTING, INSTALLATION ................................................................................ 16 6.1. Transporting .................................................................................................................. 16 6.2. Storing ........................................................................................................................... 16 6.3. Starting up ..................................................................................................................... 16

6.3.1. Installation .............................................................................................................. 16 6.3.2. Protection of guideways ......................................................................................... 16 6.3.3. Filling the fluids ..................................................................................................... 16

6.4. Starting up electric devices ........................................................................................... 17 7. SAFETY REQUIREMENTS ............................................................................................... 18

7.1. Handling ........................................................................................................................ 18 7.1.1. Operator .................................................................................................................. 18 7.1.2. Responsibility of the operator ................................................................................ 18 7.1.3. Protecting devices .................................................................................................. 18

7.2. Operation ....................................................................................................................... 19 7.2.1. Before starting work ............................................................................................... 19 7.2.2. Setting mode ........................................................................................................... 19 7.2.3. Working .................................................................................................................. 19 7.2.4. Activities after shift ................................................................................................ 20

8. MAINTENANCE MANUAL .............................................................................................. 21 8.1. Maintenance for mechanical units ................................................................................. 21

8.1.1. Spindle – headstock ................................................................................................ 21 8.1.2. Slide system ............................................................................................................ 21 8.1.3. Hydraulic unit ......................................................................................................... 21 8.1.4. Centralized lubrication system ............................................................................... 21 8.1.5. Air pressure unit ..................................................................................................... 22

8.2. Maintenance for electrical units .................................................................................... 22 8.3. Summarized maintenance manual ................................................................................. 22 8.4. Troubleshooting ............................................................................................................ 23

9. ANNEXES ........................................................................................................................... 24 9.1. Installation layout .......................................................................................................... 24


OPERATION MANUAL


Data sheet

Machine tool:

EUROturn-12C CNC controlled sub-spindle lathe

Production number:

Serial number/Year 0001/2013

Customer: Name: Address:


OPERATION MANUAL


1. PREFACE

Dear User! You are reading the operation manual of EUROturn-12C type lathe with CNC control, which contains all information required for proper operation of machine tool. We are convinced that you have the skills for operating a machine tool, although we recommend studying this operation manual before installing and operating the machine tool. If you have any questions, please do not hesitate to contact our company about training, education. The operation manual contains instructions for optimal, safety operation and maintenance of this machine tool. Studying of the related chapters is recommended before installing machine to prevent injuries, damages caused by incorrect operating. The operation manual helps for eliminate unexpected errors or damages resulting from wear, ordering spare parts. We are confident that your machine tool will be reliable partner for your work in case of careful operation and maintenance we wish you successful work. NCT Kft.


OPERATION MANUAL


2. LEGAL STATEMENTS

The operation manual contains textual references, instructions, drawings and technical information that are absolutely prohibited to reproduced or published or illegally used for competitive purposes or issue for a third person neither in whole nor in partly. The right for modification is reserved because of constant development.

2.1. Warranty statement

We undertake warranty for – data of machine tool, – main technical parameters of machine tool, – linkage dimensions of parts supplied with machine tool or accessories, – foundation dimensions, – data written in accuracy measurement record, – identity between the machine tool and the instance certified by safety engineering aspect.

2.2. Guarantee statement

This machine tool manufactured by the accuracy stated in ACCEPTANCE INSTRUCTION. The accuracy guaranteed only in case of transporting, storing, installing and the operation has done by the prescribed information. The contract of sale contains the guarantee period. If it is not specified in the contract then the prevailing laws shall be valid. The guarantee expired – if the instructions of operation manual are ignored, – if the machine tool is not used for its intended purpose, – if the machine tool is modified without permission of the manufacturer.

2.3. OSH statement

The machine tool complies for the valid OSH regulations. Only person who trained and certified from OSH allowed instructing production and operation tasks or operating the machine tool.


OPERATION MANUAL


3. TECHNICAL DATA

3.1. Workspace

Bed width 380 mm Swing diameter

– over the carriage cover 310 mm – over the cross-slide guideway 195 mm

3.2. Headstock

For main spindle Spindle head dimension (DIN 5526 or MSZ 5038) A2 5” Spindle bore diameter

– Without drawbar 56 mm – With drawbar 45 mm Front bearing bore diameter 85 mm Max. speed 6000 1/min Recommended chuck diameter 169 mm

For sub spindle Spindle head dimension (DIN 5526 or MSZ 5038) A2 3” Spindle bore diameter

Without drawbar 26 mm Front bearing bore diameter 50 mm Max. speed 6000 1/min Recommended chuck diameter 95 mm

3.3. Slide system

Guideways (X, Z, W) Pre-tensioned, ball-type X axis movement 145 mm Z axis movement 420 mm W axis movement (sub spindle slide) 435 mm Max. feeding force: – in X and Z axis 15 m/min

– in W axis 30 m/min


OPERATION MANUAL


3.4. Spindle drive

For main spindle Servo drive

– Manufacturer NCT Kft. – Type DA 32/48 D Motor

– Manufacturer HPB – Type VM100L/S – Power (2000 1/min) – ED 100% 17 kW – Torque (2000 1/min) 233 Nm – Max. speed 8000 1/min Spindle speed range 50 – 6000 1/min

For sub spindle Servo drive

– Manufacturer NCT Kft. – Type DA 16/24 D Motor

– Manufacturer LENZE GmbH – Type MDKAKRS 080 – Power – ED 100% 3,9 kW – Torque 10,8 Nm – Max. speed 8000 1/min Spindle speed range 50 – 6000 1/min

3.5. Axis drive

Servo drive – Manufacturer NCT Kft. – Type DS 6/12 EE Motor

– Manufacturer NCT Kft. – Type: X/ Z /W AB3 / Ai8 / Ai8 – Torque: X/ Z /W 3 / 8 / 8 Nm – Max. speed 3000 1/min


OPERATION MANUAL


3.6. CNC control

Manufacturer NCT Kft. Type NCT 201 (19”) Resolution 0,001 mm Machining feed 0,001 – 1000 mm/min Rapid traverse max. 30 m/min

3.7. Electrical data

Control voltage 3 x 400 ±10% V Frequency 50 Hz Max. power consumption 16 kW Max current drain 32 A External main fuse (slow-acting) 40 A Supply cable 5 x 6 mm

3.8. Tooling

Turret Manufacturer BARUFFALDI S.p.a. Type TBMA100 Number of tool spaces 12 Tool changing time (45°) 0,17 sec Max. tool changing time (180°) 0,3 sec Tool holder clamping DIN 69880 VDI16 (Ø16) Tool shank cross section 12 x 12 mm Tool disc

– Type PA-16-190X15-12-100DR-001 – Tool pitch diameter Ø190 mm Tool drive

– Torque 10 Nm – Power 3 kW – Ratio 1 : 1 – Max. speed 6000 1/min – Motor type BAUMÜLLER DS 45L


OPERATION MANUAL


3.9. Workpiece supplement

Automatic barfeeder – Manufacturer Tong Tai Machine Ltd – Type TOPPER BF-1200 – Air pressure 6 bar – Loading capacity 210 kg

3.10. Parts catcher with bucket

Pneumatic operated parts catcher – Manufacturer NCT Kft. – Max. workpiece dimension Ø40 x 115 mm – Air pressure 6 bar

3.11. Overall dimensions

Width 2060 mm Length 2580 mm Height 1950 mm Net weight 1950 kg

3.12. Storing, operating climate

Temperature 5 – 40 °C Relative humidity 20 – 75%

– only for 8 hours 95%

3.13. Machine color

Cover RAL 9002 Base RAL 7016


OPERATION MANUAL


4. TECHNICAL DESCRIPTION

The knowledge of units of machine tool is an important condition for intended use. Main parts of machine tool are described in the following chapters, until the necessary depth to understand the construction and function of parts. Studying the related figures can help the understanding of description.

4.1. Column and bed

Column is significant unit of machine tool as additional units are mounted on it. The column is a rigid, all-welded frame where the bed casting was mounted with screws. These two units are important elements for the long-term accuracy of machine tool. Chip tray, coolant tank, hydraulic unit are displaced in column and electrical cabinet, regulating valves, control and protecting cover for workspace also mounted here. Headstock, carriage, cross-slide, sub spindle headstock and its slide system mounted on the bed casting.

4.2. Headstock

The construction and bearing support of headstock is important for long-term accuracy and usability of machine tool so it has constructed and installed based on the latest research results of bearing manufacturers. Spindle and its bearings mounted in rigid casting. The angular ball bearings have slightly pre-tensioned and applied lifetime grease lubrication in the factory. The spindle head is standard construction.

4.3. Spindle drive

The flange-type spindle motor mounted in support of bed casting. The motor drives spindle by timing belt. The motor is high power and high-speed construction by extraordinary dynamics with compact dimensions. The motor has mounted with an individual cooling fan motor.

4.4. Slide system

The carriage (Z) is moving in pre-tensioned ball-type guideway mounted in bed casting. The guideway has pre-tensioned in the factory and ensures slightly but accurate movement. The cross-slide is moving in pre-tensioned ball-type guideway mounted in carriage. The cross-slide is slanted in 45° angle. Turrets with different tooling can be mounted on cross-slide. The slide of sub spindle headstock (W) is moving in pre-tensioned ball-type guideway mounted in bed casting. The guideways of slide system have lubricated by automatic centralized lubrication system.

4.5. Axis drives

Synchronous servomotors drive the slides, two of them (Z and W) mounted on the bed, the third (X) mounted on the carriage. The three axis drives are the same construction but the lengths of balls crews are different.


OPERATION MANUAL


The axis motors drive the balls crews directly by clutch; rotary encoders mounted in motors indicate the revolution for CNC control. Motors are mounted outside of the workspace and protected by covers.

4.6. Turret

The cross-slide of lathe (X) is available for mounting automatic turret. For this machine, it is a BARUFFALDI TBMA100 12 position (VDI 16) turret which can applied driven tool for any tool space. Attention! Those tool spaces have to close with plugs where tool holder had not mount to block any dirt and ensure safe operation of turret. Tool holders can be supplied from several manufacturers or distributors but always note the instructions of manufacturer and turret.

4.7. Cover

The cover separates different units of machine tool, protects them from chips and provides attractive appearance and compact design for machine tool, furthermore its guarding and ergonomics functions. Parts of cover can be opened and dismounted to provide reaching units of machine tool in case of maintaining or repairing. The safety door closes the workspace to protect the operator from hazards. Technological processes can be observed easily through safety glasses. Using safety switches and locking system can lock the workspace. The control panel is mounted on the cover and it can be operated easily, comfortably. The electrical cabinet is mounted on the back of the machine tool.

4.8. Hydraulics

The hydraulic unit is on the back of the column, mainly used for operating hydraulic workpiece clamping devices and also supplies the optional accessories. This device consists of individual unit. The hydraulic unit operated and controlled by CNC control, only setting pressure has to done manually. The pressure checked by pressure switches and indicated by pressure gauges. The permitted maximal pressure of hydraulic unit is 40 bar.

4.9. Centralized lubrication system

It provides the lubrication of ball-type guideways and ball screws of slide system. It supplies identical amount of lubricant for lubricating points per setting interval in CNC control.


OPERATION MANUAL


5. ACCESSORIES

There are different units that can be ordered as accessories. Some of them can be mounted subsequently but these should specify when ordering the machine tool to mount them under manufacturing.

5.1. Workpiece clamping devices

Wide range of workpiece clamping devices is available from several manufacturers. Selection has done carefully based on the machining tasks and type of workpiece. We recommend the following types of workpiece clamping devices.

5.1.1. Manual chucks

It is recommended in case of simple tasks with a few identical workpieces or special, individual machining tasks.

5.1.2. Power chucks

These devices simplify changing, clamping workpieces to facilitate significantly the operator’s work. Usage, application of chuck is based on the instructions of manufacturer.

5.1.2.1. Hydraulic (bar feeding)

The most commonly used clamping device, it can also clamp parts and bar materials. The secure clamping checked by pressure switches and limit switches.

5.1.2.2. Hydraulic collet chuck

This device is the best choice for clamping bar materials. Cylindrical collets provided basically for driving head, rectangular or hexagon collets are optional.

5.2. Tool holders

Choose the suitable tool holders from several manufacturers and distributors based on the turret mounted on the machine tool.

5.3. Chip management, coolant

5.3.1. Chip tray

Chip tray is a very useful accessory of machine tool; it is mounted in the column, upper the coolant tank. Coolant in chip is dripping directly back into the coolant tank. The chip tray can be pulled out from column in rolls.


OPERATION MANUAL


5.3.2. Chip conveyor

The machine tool can be supplied with chip conveyor, which can be pushed in the right side of column. Coolant in chip is dripping back into the coolant tank through the inferior side of chip conveyor. Chip has dropped into the cart under the conveyor.

5.3.3. Coolant unit

Coolant unit is an integral part of column, the coolant tank is the bottom of column, and the pumps are mounted on the side of column. The coolant can be drained in case of maintenance. Amount of coolant fluid 55 l Pump type TPHK 2T6-3 Manufacturer WALRUS Coolant flow 2 m3/h Coolant pressure approx. 3 bar Submergence 150 mm

5.4. Optional accessories

The machine tool also can be installed with the following optional accessories. In case of ordering the machine tool you have to specify the list of accessories because mounting them subsequently is more expensive and difficult.

5.4.1. Electric handwheel

This device ensures moving slides “manually” in JOG mode, doing tool measurement, and approaching, it moves a slide by adjustable steps. It concerns for diameter in X axis. You can change over axes anytime. The displacement of handwheel (external or built-in type) has to determine in ordering.

5.4.2. Barfeeder device

Machine tool can be operated in automatic mode in case of machining bar materials by using barfeeder. This individual device can be installed on the headstock side of machine tool, and works with CNC control. Type TOPPER – BF 1200 Bar capacity 65 mm Max. feeding length 1200 mm Power source Air pressure Operating pressure 6 bar

5.4.3. Parts catcher device

It can be used mainly in case of machining bar material in automatic mode. The bucket of parts catcher moves under the workpiece while starting the workpiece cut-off then it throws


OPERATION MANUAL


the workpiece into the store or conveyor after it is falling into the bucket. After then the completed workpieces can be took out from the store. The main advantage of using this machine is the workpiece does not fall into the chips so it cannot damage and it remains clean when falls into the store. Max. workpiece diameter 40 mm Max. length 115 mm Power source Air pressure Operating pressure 6 bar Cycle time (in machining time) about 5 sec

5.4.4. Different machine colours

If you would like your machine tool in different colours, then specify the correct RAL-code, and the machine tool will be painted to the desired colour.

5.4.5. Automatic tool measurement

It eases the tool adjustment. This device contains a touch probe mounted in the end of fixed arm and it is connected next to the spindle. The measuring cycle of CNC control moves the tools into the touch probe and it updates the tool dimension coordinates after switching. Move the measuring tool edge into the middle of touch probe in the first measurement. Manufacturer RENISHAW Measuring accuracy ±0,001 mm

5.4.6. “C” axis

It means the rotation of spindle as a continuous controlled axis in case of machining spiral surfaces, flat surfaces in workpiece by using driven tools. The lathe works as a 3-axis milling machine.


OPERATION MANUAL


6. TRANSPORTING, INSTALLATION

6.1. Transporting

The machine tool always transported by covered with foil. It has covered in box on request. Inspect the machine tool after unpacking. Record the damaged, faulty package. The machine tool could be lifted by using the attached lifting diagram.

6.2. Storing

The machine stored in a rigid, horizontal floor and dry, dust-free room as a provisional displacement. The environmental requirements are also available for storing. The accessory box can be opened only in presence of manufacturer’s mechanic.

6.3. Starting up

6.3.1. Installation

The machine tool has to install on concrete foundation, the maximal tolerance of concrete foundation from levelness is 5 mm. The drawing of the installation layout is to be found in the Chapter 9. The following requirements have to observe when installing machine tool: – Ensure enough space around the machine tool for safety moving, operation, opening doors,

maintenance and repairs. – Ensure space for feeding bar material in case of machining bar materials. – Ensure space for pulling out chip tray.

6.3.2. Protection of guideways

The rolling guideways are protected with NEOVAL MTE 300 oil that has not clear off when starting up. Using aggressive detergents (acetone, nitrous solvent), flammable liquids (petrol) and agents that damage devices of machine tool are absolutely prohibited. Surfaces have to slightly coat with oil after cleaning the dirt.

6.3.3. Filling the fluids

The machine tool transported without coolant liquid so it has to fill before starting up. Be sure to use the requested quality of hydraulic oil. The centralized lubrication system is filled up with 00 type slight grease.

Filling point Lubricant quality Amount (l) Hydraulic unit ISO HM-46 30 Centralized lubrication system ENERGREASE FG-00 EP approx. 3


OPERATION MANUAL


FEATURES OF HYDRAULIC OIL AND LUBRICATION GREASE

Features Quality

HLP-46 FG-00 EP Kinematic viscosity on 40°C [cSt] 46 100 Kinematic viscosity on 50°C [cSt] 30-38 60 Flammability point [°C] 190 200 Chill point [°C] <+5 -10 REFERENCE CHART FOR HYDRAULIC OIL AND LUBRICATION GREASE

MOL MOBIL SHELL BP ESSO CASTROL HL-46 DTE OIL

MEDIUM VITREA OIL 46

ENERGOL HLP-46

TERESSO 68

PERFECTO 68

LITON 00 VACTRA N°2

TONNA OIL 68

ENERGREASE FG-00 EP

FEBIS K 68 MAGNA BD

Coolant liquid The machine tool transported without coolant liquid so it has to fill before starting up. Fill up the coolant until the indicated level. The pH value of coolant liquid has to be between 8 - 8,5 for corrosion and health reasons. Using coolant liquid that contains aggressive additive is absolute prohibited!

6.4. Starting up electric devices

The machine tool can be programmed and operated by CNC control after installing. The documentation of manufacturer is always valid. The required documents are attached to operation manual.


OPERATION MANUAL


7. SAFETY REQUIREMENTS

Although the previous chapters have already contained instructions for safety work the following requirements are essential for safety operation of machine. These requirements

CAN BE COMPLETED based on 47/1979/XI.30./MT. decree of Occupational Safety Regulations of company, and the technological, operational, handling and maintenance instructions based on MSZ 14399-80 standard. By installing machine be observe the space requirements of handling, doing maintenance activities.

7.1. Handling

7.1.1. Operator

The machine tool is operated only 1 operator simultaneously. The operator can be older than age of 18 years, who has been entrusted handling of machine tool and has proficiency for operating machine tool (at least a trained worker), and has trained for operating this machine tool. The proper, safe operation of machine is practiced, certified for occupational safe and techniques of security, and fulfils the health and competency requirements. It should be noted that operating – for service and handling – this machine tool is enough for trained worker. For adjusting, programming this machine tool a well-trained professional is necessary. When adjusting the machine it is absolutely prohibited to the operator use the machine tool. Attention! The handling of machine tool is absolutely prohibited for juveniles and disabled people.

7.1.2. Responsibility of the operator

The operator is responsible: – for executing the instructions for handling and techniques of security, the mandatory

revision before shift and providing the specified maintenance; – for eliminating any failure or damage detected during start of work and reporting it to his

chief; – for proper use of machine tool; – for keeping away unauthorized people from machine tool.

7.1.3. Protecting devices

The operator must be worn custom protection clothing that is properly closed and can cleaning easily. Loose clothing, long hair is dangerous.


OPERATION MANUAL


Wearing any accidental objects (watch, jewellery, etc.) or clothes is absolutely prohibited.

7.2. Operation

7.2.1. Before starting work

The machine tool has to inspect before shift by operator. Check the accurate motion of powertrain and the operation of safety devices. Checklist: Emergency stop button

– stops all motion Safety door

– spindle could not start in open state of door – the door could not open if spindle is rotating

Workpiece clamping device:

– fasten the chuck jaws – set the value of clamping force (hydraulic pressure) – set the direction of clamping force (internal or external clamping) – limit switches disable rotating spindle in case of empty chuck

Tools, tool holders:

– clamped tightly and in correct state Machine tool can be operated in case of fulfilling the above requirements.

7.2.2. Setting mode

The door lock could be switch off so the machine tool could be operate by opened doors to perform high precision settings. The technician has to be absolutely careful because staying in dangerous space. The key that enabling setting mode is recommended to store at the foreman

7.2.3. Working

The machine tool could be immediately stopped in case of deviation while machining. The machine tool could be stop by pressing emergency stop button in case of direct risk of accident or damage. Be careful in case of changing tool clamped in the turret disc to ensure sufficient space for rotating. Chip can removed only in stopped machine and only by using special devices.


OPERATION MANUAL


7.2.4. Activities after shift

Machine tool can be clean after every shift. Clean it only in stopped and switched off from electricity. It can be clean by using universal detergents. Attention! Cleaning machine tool by using air pressure is absolutely prohibited. Workpiece could not keep in machine tool in clamped state because clamping devices can be release the clamping force.

7.2.4.1. Maintenance

Only entrusted, well-trained mechanic skilled worker can do repairing and performing maintenance of mechanical parts. Difficult works or in case of using special tools can be perform by professionals of manufacturer. Only entrusted, well-trained electrician skilled worker can do repairing and performing maintenance of electrical parts. Professionals of manufacturer can perform repairing CNC control. Performing any maintenance works can be done only in safe environment. Put the following plate on the machine during maintenance: Hydraulic devices can be dismount only after releasing the pressure of system. Spare parts can be mount in machine tool if they are met the expected maximal stress and safety requirements. Attention! Repairs that degrade the safety parameters of machine tool are absolutely prohibited.

MACHINE UNDER MAINTENANCE DO NOT SWITCH ON


OPERATION MANUAL


8. MAINTENANCE MANUAL

Although the machine tool is a modern construction and it is mounted with long life units the preventive maintenance is also necessary. Well-trained technician only can achieve maintenance activities by respected occupational safety requirements. Please contact the technicians of manufacturer in case of unknown error or could not be solve. Attention! Machine tool is switched off from electricity before by power switch before any repairing work.

8.1. Maintenance for mechanical units

8.1.1. Spindle – headstock

It is a maintenance free unit but in case of problem please contact the technicians of manufacturer because changing, adjusting and greasing the spindle bearings required special knowledge. The spindle motor has not got carbon brushes so it does not require maintenance until generates unexpected noises. It means error of spindle bearings. The tension of spindle belt could check for 2 - 3 monthly depend on using interval. If the belt could be push higher than 10 mm by hand in the halfway of axle spacing then it needs tensioning. The belt could be tensioned by unlocking motor base, moving it then locking the motor base in this position.

8.1.2. Slide system

The guideways and ball screws of carriage (Z), cross-slide (X) and sub spindle slide (W) do not need maintenance. Check proper work of these units during daily maintenance.

8.1.3. Hydraulic unit

Observe the instructions of manufacturer in all cases which is attached for this operation manual. The most important general aspects: – Only clean oil could be drain into the tank from the prescribed quality. – In case of changing oil the oil filter has also replaced. – Be sure dirt could not enter into the system by dismounting units because valves are

sensitive by their strict tolerances. – Oil filter could be change if necessary.

8.1.4. Centralized lubrication system

Check the level of prescribed lubricant always, CNC control warns about lack. The whole amount of lubricant could be change and clean the lubricating unit annually.


OPERATION MANUAL


8.1.5. Air pressure unit

Air valves could be change if necessary. Condensed water of air pressure unit could be drain weekly.

8.2. Maintenance for electrical units

The electric system does not need maintenance because the cooling of NC box and control box is a closed system, and the synchronous motors have not got any consumable parts (carbon brushes). Bolt connections of electric system should be check quarterly.

8.3. Summarized maintenance manual

Before switch on machine tool check the centralized lubrication unit filled with slight grease and inspect the machine tool is there any damage. The machine tool only could be switched on in perfect condition.

After switch on machine tool check the accurate, smooth motion of slides and the operation of workpiece clamping devices.

During operation check noises of powertrain continuously and other effects (vibration, inaccurate motion, etc.) and the secure clamp of workpiece.

After switch off machine tool clean chips and other dirt from workspace.

Attention! Cleaning machine tool by using air pressure is absolutely prohibited.

Clean the limit switches, guideway wipers, lamps, and window of safety door, lubricate the chuck weekly.

Clean the whole machine tool, dismount the protective telescopic covers and clean up dirt also from closed space monthly. Also replace air filter inlets, check hydraulic filter and replace or clean them in function of pollution.

Also replace air filter inlet of control box, check tolerances and adjust them if necessary quarterly.

Replace coolant fluid and clean tank semi-annually.

Inspect hydraulic oil and its filter and replace them if necessary annually. Also clean the tank of lubrication system and replace lubricant. Inspect the main units (ballscrews, spindle bearings, bed guideways, timing belts, guideway wipers, ball-type rollers, hydraulic unit) Inspect geometrical accuracy of machine tool and do the necessary adjustments, repairings every second year.


OPERATION MANUAL


8.4. Troubleshooting

Error Cause Machine tool does not start Emergency stop button is pushed or feed override

switch is in ‘0’ state or in ‘feed stop’ state. Inaccurate machining Tool does not clamped correctly.

Technological parameters are not optimal. Tool insert is worn out or broken. Workpiece does not clamped correctly. Backlash does not compensate. Error of measuring system. Geometrical error.

Incorrect manufactured surface Tool insert is worn out or broken. Technological parameters are not optimal. Tool extends too long. Workpiece does not clamped correctly. Spindle bearings are damaged.

Vibration (during machining)

Technological parameters are not optimal. Tool insert is worn out or broken. Loose of powertrain. Spindle bearings are damaged.

Machine tool stopped Error message sent by CNC control. Attention! In case of error message sent by CNC control record it to ensure servicing. Please give the error message when contacting service of manufacturer. If service of manufacturer has to intervene it do only the most important switches to retrace the situation before error. Drawings Assembly drawings of units are attached to ease ordering spare parts and to get familiar with units. These also contain the manufactured and commercial products. The correct reference number is based on the parts list after the drawings. Manufacturer or distributor is also defined after name of commercial part. List of drawings: Lifting Main assembly Workspace-stroke Machining dimensions

Appendix Document of electric unit Document of CNC control

– Handling manual – Technical manual – Programming manual


OPERATION MANUAL


9. ANNEXES

9.1. Installation layout

Documents

EUROturn-12C NCT eng 2013-09-02 · PDF fileSpindle head dimension (DIN 5526 or MSZ 5038) A2 3” Spindle bore diameter Without drawbar 26 mm Front bearing bore diameter 50 mm Max