08m13e09 - Advanced Measurement Training Workbook for the Student - February 2004.pdf

VERSION 4.0

ADVANCED MEASUREMENT TRAINING WORKBOOK

FARO ARMFEBRUARY 2004STUDENTS BOOK

FARO Technologies Inc. 2004. All rights reserved.

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Course Introduction:

This course is designed to provide the skills necessary to measure a part, check a part, and compare measurements to nominal CAD files.

There will be lectures, as well as hands-on exercises that will allow you to practice the skills that you have learned.

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Advanced Measurement Training WorkbookVersion 4.0 - February 2004

Course ChecklistChapter 1: Intermediate Coordinate Systems Feature Reducibility Coordinate System Discussion Coordinate Systems Change Coordinate System Discussion

Important Topics - Intermediate AlignmentsChapter 2: Intermediate Coordinate Systems Practical

PRACTICAL Exercise 3-2-1 Separate Origin Perpendicular Intersect Bore Line-Line Midpoint 3 Point 3 Plane Set Active Coordinate System Change Coordinate System

Rotation Translation

Chapter 3: Advanced Coordinate System Calculated Coordinate System CAD=Part Constructions

2 Offset Line 3 Offset Plane

Important Topics - Advanced Coordinate SystemsChapter 4: Advanced Coordinate Systems Practical

PRACTICAL EXERCISE Nominal Alignments on the CAD Construct the Plane Construct the Plane Construct the Line Complete the Coordinate System Verify Alignmenti


Chapter 5: Advanced CAD to PART Alignments Feature Alignment Iterative Alignment with Surface Points Iterative Alignment with Not Used Values

When to Use This Technique Watch Out!

Important Topics - Advanced CAD to Part AlignmentsChapter 6: Advanced CAD to PART Alignments Practical

PRACTICAL EXERCISE - Feature Alignment PRACTICAL EXERCISE - Iterative Alignment with Surface Points

Using Surfaces as Nominals PRACTICAL EXERCISE - Iterative Alignment with Not Used Values

Measurement Template Using Surface Points

Chapter 7: Point Measurement Point Measurements

Comp Off and Comp Axis High Point and Low Point

Surface Measurements Important Topics - Point Measurement

Chapter 8: Point Measurement Practical PRACTICAL - Surface Measurement

Measuring the Alignment Features Constructing the Alignment High Points Home-in Options Three Coordinates, Key-in I, J, K Three Coordinates, Select Surface Three Coordinates, Sample Surface Save the Home In File Measure the Home In Points

Chapter 9: Scanning and Comparing to CAD Practical Practical Exercise

Measuring and Creating an Alignment CAD=Part Scan Measurement Preference Parallel Lock Planes Show Surface Deviation Rescale Whiskers Printing and Saving a Text Reportii

Advanced Measurement Training WorkbookVersion 4.0 - February 2004Chapter 10: Sheet Metal Measurement Sheet Metal Measurements

Simple Features Unique Sheet Metal Measurements Surface Points

CAD Side and Other Side Dynamic Nominals

Important Facts - Sheet Metal and Fixture MeasurementChapter 11: Sheet Metal and Surface Measurement Practical

PRACTICAL EXERCISE Constructing Nominals Using the Measurement Template Iterative Alignment Compare to Straight Nominal Edge Compare Nominal Circles Compare Nominal Round Slots Compare Nominal Surfaces

Chapter 12: Advanced Dimensions Geometric Characteristics and Symbols Form Dimensions Orientation Dimensions

Parallelism Perpendicularity Concentricity

True Position Dimensions RFS (Regardless of Feature Size) MMC (Maximum Material Condition)

Pattern Position Dimensioning Important Topics - Advanced Dimensions

Chapter 13: Advanced Dimensions Practical PRACTICAL EXERCISE

Constructing Nominals Creating a Nominal Alignment Measure the Datum Features Constructing the Measured Alignment Position Dimensions Printing and Saving a Text Report Pattern Position Saving a Text Reportiii


Chapter 14: Measurement Automation Learn Mode

Online or Offline? Execute Mode

Display Results Important Topics - Measurement Automation

Chapter 15: Measurement Automation Practical Practical Exercise

Selecting Units and Default Tolerances Start Programming Constructing the Measured Alignment Printing a Report Modifying and Saving your Learn file Execute Mode

Chapter 16: Advanced Graphical Reporting Saving Data to CAM2 SPC Graph

Using Pictures from a Digital Camera Chart Types

Advanced Chart Options Important Topics - Advanced Graphical Reporting

Chapter 17: Advanced Graphical Reporting Practical Practical Exercise

Modify the Learn/Execute Program Running the Learn Execute Program. Creating a SPC Graph Template Align Icons Adding a Preview to the Program

Chapter 18: Tool Building Tool Building

DRO Window Dynamic DRO Window

Important Topics - Tool BuildingChapter 19: Tool Building Practical

Practical Exercise Aligning to the CAD Iterative Alignment Import Model Creating a DRO window on a Nominal Positioning the Bracket Recording the Tool Positioniv

Advanced Measurement Training WorkbookVersion 4.0 - February 2004Chapter 20: Round Tubing Tubing Part Preferences Measure Tube

Round Tube Rectangular Tube Tube Fitting

Construct Tube Enter XYZ Enter PTB Importing Data

Tube Reporting Tube Correction Report

Important Topics - Round TubingChapter 21: Measuring a Round Tube Practical

Practical Exercise Measuring a Tube Printing and Saving a Text Report

Chapter 22: Creating a Round Tube Learn/Execute Practical

Practical Exercise Preparing the Learn Execute file Start Programming Constructing a Nominal Tube Construct Tube Points Measuring a Tube Tube Alignment Printing a Report End Learn.v

Advanced Measurement Training WorkbookVersion 4.0 - February 2004Chapter 1: Intermediate Coordinate Systems

OBJECTIVE - The instructor will present feature reducibility and the differences between the coordinate systems. After completing this section the student will be able to create coordinate systems with fewer constructions.

Feature ReducibilityFill in the chart below:

Plane Line Point

Arc

Circle

Cylinder

Cone

Ellipse

Line1Chapter 1: Intermediate Coordinate Systems


Chapter 1: Intermediate

Plane

Plane Line PointCoordinate System Discussion

3-2-1 TYPE Coordinate System Discussion

Each coordinate system levels the plane (XY, YZ or XZ), rotates the axis (X, Y or Z) and sets the origin. 3-2-1 means that three points define a plane that sets one axis, two points define a line that locks a second axis, and one point defines an origin.

There are factors that distinguish the eight different coordinate systems. 1 The selected features (plane, line or point).

2 How the features are used.

Point

Rectan-gular Slot

Round Slot

Sphere2Coordinate Systems

Advanced Measurement Training WorkbookVersion 4.0 - February 2004Coordinate Systems

Coordinate Systems using a Plane, Line, and Point in Different Ways

The Coordinate System uses the point selected as the origin.

The Coordinate System projects the point selected to the plane for the origin.

The Coordinate System projects the point selected to the line selected for the origin.

FIGURE 1-1 3-2-1 Coordinate System

FIGURE 1-2 Separate Origin Coordinate System

FIGURE 1-3 Perpendicular Coordinate System

X

YZ

X

YZ

X

YZ3Chapter 1: Intermediate Coordinate Systems

Advanced Measurement Training WorkbookVersion 4.0 - Februar

Chapter 1: Intermediate y 2004

Coordinate Systems using a Plane and Two Lines

The Coordinate System creates the origin from the intersection of the two lines. The first line defines the direction of the X-axis.

The Coordinate System creates the origin from the intersection of the plane and the second line selected. Notice that the second line must intersect the plane at a single point and cannot lie on the plane.

Other Coordinate Systems using Different Features

The Coordinate System uses the first plane selected as the XY plane, the second plane intersects the first to create the X-axis, and the third plane intersects the other two to create the origin.

FIGURE 1-4 Line/Line Coordinate System

FIGURE 1-5 Bore Coordinate System

FIGURE 1-6 3 Plane Coordinate System

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24Coordinate Systems


The __________ Coordinate System sets the origin at the first point, the +X-axis from the first point to the second, and the +XY plane on the third point. The Coordinate System sets the origin at the midpoint of the line selected.

Change Coordinate System Discussion

Rotation allows the coordinate system to spin about any axis or line. Use the hand rule to determine which rotation direction is positive. Point the thumb of your right hand along the positive axis or line direction. The direction your fingers wrap is the positive direction of rotation.

Translation allows you to move the coordinate system to a specific point in space, either from a previous coordinate system or to any other ____________ feature or along a line.

FIGURE 1-7 3 Point Coordinate System

FIGURE 1-8 Midpoint Coordinate System

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YZ

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YZ

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25Chapter 1: Intermediate Coordinate Systems


Chapter 1: Intermediate Important Topics - Intermediate Alignments It is possible to create multiple coordinate systems and switch between

them.

A 3-2-1 Coordinate System can be constructed using a slot.

Two circles can be used in place of a line for a coordinate system.

The Translation function can:

Move the origin to a specific feature.

Move the origin to a specific XYZ value.

Offset the origin a specific XYZ distance from a feature.6Coordinate Systems


Chapter 2: Intermediate Coordinate Systems PracticalPRACTICAL ExerciseStart with a new file and load the correct part preferences to work on this practical.

1 From the FILE menu, select NEW.

2 Click NO to save changes.

3 From the FILE menu, select PREFERENCES.

4 From the PART PREFERENCES, click LOAD.

5 Click OK to exit.

NOTE: Loading the Metric-0.25mm file will change all the tolerances to +/-0.25mm. This will be the default value for every new feature added to CAM2 Measure.

Drawing Units = Millimeters.

Click OK.

FIGURE 2-1 Drawing Units

Choose the Metric-0.25mm.xpp file.

Click OPEN.

FIGURE 2-2 Load Tolerances7Chapter 2: Intermediate Coordinate Systems Practical


Chapter 2: Intermediate 3-2-1

1 From the MEASURE menu, select PLANE.

2 Measure the plane on the top of the plate.

3 Take a look at the results.

4 From the MEASURE menu, select SPHERE.

Take four or five points on the top of the plate by pressing the FRONT button.

Pull up off the surface and press the BACK button.

FIGURE 2-3 Measure XY Plane

Label = BASE_PLANE.

If everything looks good, press the FRONT button to accept the results.

If it doesnt look good, press the BACK button twice to reject. Then re-measure the feature.

FIGURE 2-4 Plane Results8Coordinate Systems Practical


5 Measure Sphere C.

Take four or five points around the sphere by 6 Take a look at the results.

7 From the MEASURE menu, select LINE < 2D LINE.

8 The SELECT PLANE dialog will be displayed.

pressing the FRONT button.

Pull away from the sur-face of the sphere and press the BACK button.

FIGURE 2-5 Measure Sphere C

Label = SPHERE_C.

If everything looks good, press the FRONT button button to accept the results.

If it doesnt look good, press the BACK button but-ton twice to reject. Then re measure the feature.

FIGURE 2-6 Sphere Results

Select a Plane = M_BASE_PLANE. This will be the plane to which the points are projected.

Offset = 0.

Click OK.

FIGURE 2-7 Select Plane9Chapter 2: Intermediate Coordinate Systems Practical


Chapter 2: Intermediate 9 Measure the line on the edge that is nearest Cylinder G. Start from the edge by Sphere A, working towards Sphere B.


11 From the CONSTRUCT menu, select COORDINATE SYSTEM < 3-2-1.

12 Click OK to accept the coordinate system.

Take four or five points on the side of the plate by pressing the FRONT button.

Pull away from the sur-face and press the BACK button.

FIGURE 2-8 Measure X Axis

Label = LINE_FRONT.



FIGURE 2-9 Line Results

Select a Plane = M_BASE_PLANE.

Direction of Plane = +XY.

Line Defined Axis = M_LINE_FRONT.

Direction of Axis = +X.

Select Origin = M_SPHERE_C.

Select CONSTRUCTED toggle button.

Click OK.

FIGURE 2-10 3-2-1 Coordinate System10Coordinate Systems Practical

Advanced Measurement Training WorkbookVersion 4.0 - February 2004NOTE: Notice on the 3-2-1 coordinate system that the origin is the centerpoint of the sphere.

Separate Origin

1 From the CONSTRUCT menu, select COORDINATE SYSTEM < SEPARATE ORIGIN.


NOTE: Notice on the Separate Origin coordinate system, the origin is the center point of the sphere projected to the base plane.

Perpendicular Intersect

1 From the CONSTRUCT menu, select COORDINATE SYSTEM < PERPENDICULAR INTERSECT.


NOTE: Notice on the perpendicular intersection coordinate system, the origin is the center point of the sphere projected to the line.


Line Defined X-Axis = M_LINE_FRONT.

Origin = M_SPHERE_C.


Click OK.

FIGURE 2-11 Separate Origin Coordinate System



Origin = M_SPHERE_C.


Click OK.

FIGURE 2-12 Perpendicular Intersect Coordinate System11Chapter 2: Intermediate Coordinate Systems Practical


Chapter 2: Intermediate Bore

1 From the MEASURE menu, select CIRCLE.


3 Define the Plane.

4 Measure Circle 10.

Select a Plane = DEFINE. This will be the plane to which the points are projected.

Offset = 0.

Click OK.

FIGURE 2-13 Select Plane

Take four or five points on the surface of the plate by pressing the FRONT button.



Take four to five points around the circle by pressing the FRONT button.

Move to the center of the circle and press the BACK button.

FIGURE 2-15 Measure Circle 1012Coordinate Systems Practical



Label = CIRCLE010_I.

If everything looks good, press the FRONT button to 6 From the CONSTRUCT menu, select COORDINATE SYSTEM < BORE.


NOTE: Notice on the Bore coordinate system, the origin is at the intersection of the second line with the plane.

accept the results.


FIGURE 2-16 Cylinder Results



Click on the toggle button next to the FIRST POINT ON LINE toggle button to enable the FIRST POINT ON LINE and SECOND POINT ON LINE dropdown.

First Point on Line = M_SPHERE_C.

Second Point on Line = M_CIRCLE010_I.


Click OK.

FIGURE 2-17 Bore Coordinate System13Chapter 2: Intermediate Coordinate Systems Practical


Chapter 2: Intermediate Line-Line

1 From the CONSTRUCT menu, select COORDINATE SYSTEM < LINE-LINE.


NOTE: Notice on the Line-Line coordinate system, the origin is at the intersection of the two lines projected to the plane.

Midpoint


2 Measure Sphere B.



Click on the toggle button next to the FIRST POINT ON LINE toggle button to enable the FIRST POINT ON LINE and SEC-OND POINT ON LINE dropdown.

First Point on Line = M_SPHERE_C.

Second Point on Line = M_CIRCLE010_I.


Click OK.

FIGURE 2-18 Line/Line Intersect Coordinate System

Take four or five points around the sphere by pressing the FRONT button.


FIGURE 2-19 Measure Sphere B14Coordinate Systems Practical

Advanced Measurement Training WorkbookVersion 4.0 - February 20043 Take a look at the results.

4 From the CONSTRUCT menu, select COORDINATE SYSTEM < MIDPOINT.


NOTE: Notice that the X-axis is positive in the direction that the spheres were selected. The origin is the midpoint of the line projected to the plane.

3 Point


Label = SPHERE_B.





Click on the toggle button next to the LINE DEFINED X AXIS toggle button to enable the FIRST POINT ON X AXIS and SECOND POINT ON X AXIS dropdown.

First Point on X Axis = M_SPHERE_C.

Second Point on X Axis = M_SPHERE_B.


Click OK.

FIGURE 2-21 Midpoint Coordinate System15Chapter 2: Intermediate Coordinate Systems Practical


Chapter 2: Intermediate 2 Measure Sphere D.


4 From the CONSTRUCT menu, select COORDINATE SYSTEM < 3 POINT.


NOTE: Notice that the XY plane is defined by the three points. The X axis is defined by a line between sphere C and sphere B. The origin is at the centerpoint of sphere C.



FIGURE 2-22 Measure Sphere D

Label = SPHERE_D.




Select Origin = M_SPHERE_C.

Point on +X = M_SPHERE_B.

Point on +XY = M_SPHERE_D.


Click OK.

FIGURE 2-24 3 Point Coordinate System16Coordinate Systems Practical


3 Plane

1 From the CONSTUCT menu, select PLANE > PERPENDICULAR.

Select a Point = M_SPHERE_C.


First Point on Line = M_SPHERE_D.2 Take a look at the results.

Second Point on Line = M_SPHERE_C.


Click OK.

FIGURE 2-25 Construct Plane Perpendicular

Label = PLANE_LEFT.

Click OK.

FIGURE 2-26 Plane Results17Chapter 2: Intermediate Coordinate Systems Practical


Chapter 2: Intermediate 3 From the CONSTUCT menu, select PLANE > PERPENDICULAR.


5 From the CONSTRUCT menu, select COORDINATE SYSTEM < 3 PLANE.

6 Click OK in the RESULTS dialog to accept the coordinate system.

Select a Point = M_SPHERE_B.


First Point on Line = M_SPHERE_D.

Second Point on Line = M_SPHERE_B.


Click OK.

FIGURE 2-27 Construct Plane Perpendicular

Label = PLANE_FRONT.

Click OK.

FIGURE 2-28 Plane Results

Select XY Plane = M_BASE_PLANE.

Select Plane 2 = C_PLANE_FRONT.

Select Plane 3 = C_PLANE_LEFT.


Click OK.

FIGURE 2-29 3 Plane Coordinate System18Coordinate Systems Practical


NOTE: Notice that the intersection of Base plane and Front plane defines the X-axis and the origin is at the intersection of the three planes.

Set Active Coordinate System

1 From the CONSTRUCT menu, select COORDINATE SYSTEM < SET ACTIVE.

Set Active = C_COORDSYS007 (the 3 Point Change Coordinate System

Rotation

1 From the CONSTRUCT menu, select COORDINATE SYSTEM < ROTATION.


NOTE: Notice that the coordinate system was rotated so that the X axis is oriented parallel to the front of the base.

coordinate system).

Click OK.

FIGURE 2-30 Set Active Coordinate System

Coordinate System = C_COORDSYS007.

Line Defined axis = +Z_C_COORDSYS007.

by = 20.2 degrees.


Click OK.

FIGURE 2-31 Rotate Coordinate System19Chapter 2: Intermediate Coordinate Systems Practical


Chapter 2: Intermediate Translation

1 From the CONSTRUCT menu, select COORDINATE SYSTEM < TRANSLATION.


NOTE: Notice that the origin was translated to the corner of the part using the X value of Sphere C, the Y value of Sphere B, and the Z value of Circle 10.

Select X Origin = M_SPHERE_C.

X Offset = -15.0.

Select Y Origin = M_SPHERE_B.

Y Offset = -15.0.

Select Z Origin = M_CIRCLE010_I.

Z Offset = -12.0.



Click OK.

FIGURE 2-32 Translate Coordinate System20Coordinate Systems Practical

Advanced Measurement Training WorkbookVersion 4.0 - February 2004Chapter 3: Advanced Coordinate System

OBJECTIVE - The instructor will present how to establish coordinate systems when information on the datums are limited. After completing this section the student will be able to use constructions to establish coordinate systems.

Calculated Coordinate SystemThere will be situations where the datum information is sufficient to define a coordinate system (plane, line, and point), but the origin is not located at the datums. The datums are structured such that using a rotation and translation technique would be extremely difficult, if not impossible.

In the situation described below, a coordinate system will be established using the indicated datums. The print also indicates that locations should be used to define the datums instead of directly measuring the datum features. The information from this print will be used to construct datum features from the specified targets.

FIGURE 3-1 Print with Datum Targets

B

B

THIS DRAWING AND ALL THE INFORMATION THERIN IS THE PROPERTY OF FARO TECHNOLOGIES, INCORPORATED. THIS DRAWING IS CONFIDENTIAL AND MAY NOT BE MADE PUBLIC OR REPRODUCED WITHOUT THE EXPRESS PERMISSION OF FARO TECHNOLOGIES, INCORPORATED. THIS DRAWINGIS LOANED SUBJECT TO RETURN UPON DEMAND AND SHALL NOT BE USED DIRECTLY OR INDIRECTLY IN ANY WAY DETRIMENTAL TO THE INTERESTS OF FARO TECHNOLOGIES INCORPORATED.

THIRD ANGLE PROJECTION UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN MILLIMETERS TOLERANCES ARE: X .X .XX .XXX ANGLE0.25 0.1 0.05 0.01 1

INTERPRET DRAWING PER DOD-STD-100 AND ASME Y14.5. DO NOT SCALE DRAWING

TITLE

Armed with Quality

BASE, DEMO FIXTURE

THREADS IN ACCORDANCE WITH HANDBOOK 28

FINSH REQUIRED63

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50 50

C1B1A1

B2A2

A310

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67.521Chapter 3: Advanced Coordinate System


Chapter 3: Advanced Co

CAD=PartThis function requires that some type of coordinate system on the part has been constructed using measured features. Selecting CAD=PART sets the current coordinate system equal to the CAD or Nominal coordinate system (also called the world coordinate system) and moves all the measured data to the CAD coordinate system. The measurements are then overlaid onto the CAD or nominal data.To use CAD=PART the coordinate system on the part must match the coordinate system of the CAD. In many cases, the origin of the coordinate system will not be on the part, and a translation or rotation will be necessary to get the coordinate system to the correct location.

Constructions2 Offset Line

This functions constructs a (typically a coordinate axis) where there is a known offset. When a part defines a datum with two target location and the points do not lie on the datum line, the Construct Line, 2 Offset command can be used to construct the line. This command can also be used as rotate function by entering the offset values instead of the rotation angle. The offset direction is always to the right side of the two points.

FIGURE 3-2 2 Point 2 Offset Line

1

222ordinate System

Advanced Measurement Training WorkbookVersion 4.0 - February 20043 Offset Plane

This functions constructs a plane (typically a coordinate plane) where there is more than one for the points. When a part defines a datum with three target locations and the points do not lie on the datum plane, the Construct Plane, 3 Offset command can be used to construct the plane. The plane is constructed above or below the selected points. The order that the points are selected is used to determine the offset direction. Use the right-hand rule to determine the offset direction.

Important Topics - Advanced Coordinate Systems

There are two possible solutions in the three-point, three-offset plane construction. Use the right hand rule to determine the correct offset direction.

The CAD=PART function needs to be performed after the translation.

FIGURE 3-3 3 Point 3 Offset Plane

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323Chapter 3: Advanced Coordinate System

Advanced Measurement Training WorkbookVersion 4.0 - February 2004Chapter 4: Advanced Coordinate Systems Practical

PRACTICAL EXERCISEStart with a new file and load the correct part preferences for this practical.




FIGURE 4-1 Print with Datum Targets


Click OK.


B

B

THIS DRAWING AND ALL THE INFORMATION THERIN IS THE PROPERTY OF FARO TECHNOLOGIES, INCORPORATED. THIS DRAWING IS CONFIDENTIAL AND MAY NOT BE MADE PUBLIC OR REPRODUCED WITHOUT THE EXPRESS PERMISSION OF FARO TECHNOLOGIES, INCORPORATED. THIS DRAWINGIS LOANED SUBJECT TO RETURN UPON DEMAND AND SHALL NOT BE USED DIRECTLY OR INDIRECTLY IN ANY WAY DETRIMENTAL TO THE INTERESTS OF FARO TECHNOLOGIES INCORPORATED.

THIRD ANGLE PROJECTION UNLESS OTHERWISE SPECIFIED DIMENSIONS ARE IN MILLIMETERS TOLERANCES ARE: X .X .XX .XXX ANGLE0.25 0.1 0.05 0.01 1

INTERPRET DRAWING PER DOD-STD-100 AND ASME Y14.5. DO NOT SCALE DRAWING

TITLE

Armed with Quality

BASE, DEMO FIXTURE

THREADS IN ACCORDANCE WITH HANDBOOK 28

FINSH REQUIRED63

A

50 50

C1B1A1

B2A2

A310

C

B

135

67.525Chapter 4: Advanced Coordinate Systems Practical


Chapter 4: Advanced Co4 From the PART PREFERENCES, click LOAD.

5 Click OK to accept the preferences.

6 From the FILE menu, select IMPORT CAD.

7 From the VIEW menu, select ZOOM < ZOOM ALL to fit the CAD model in the screen.


Click OPEN.

FIGURE 4-3 Load Tolerances

Navigate to the CAM2 Measure/Tutorial directory.

Filename = FARO_Demo_Part3.igs.

Files of type = Spatial IGES (*.IGS).

Click OPEN.

FIGURE 4-4 Import CAD Drawing

FIGURE 4-5 FARO_Demo_Part3.igs26ordinate Systems Practical

Advanced Measurement Training WorkbookVersion 4.0 - February 2004Nominal Alignments on the CAD

Constructing Nominal Objects

1 From the CONSTRUCT menu, select PLANE < NOMINAL.

2 Choose the direction of the plane.


CAM2 Measure will create a plane with 3 points.

Use the mouse to click 3 points on the bottom surface to define a plane for Datum A. Watch the PROMPT BAR for instructions.

FIGURE 4-6 Construct XY Plane

Click the LEFT mouse button to toggle the vec-tor so that it points up.

Click the RIGHT mouse button to accept the vec-tor.

FIGURE 4-7 Choose Direction Vector

Label = PLANE001.

Click OK to accept the results.

FIGURE 4-8 Nominal Plane Results27Chapter 4: Advanced Coordinate Systems Practical


Chapter 4: Advanced Co4 From the CONSTRUCT menu, select LINE < NOMINAL.

NOTE: Since a nominal line was selected only one point is required to define the line.


6 From the CONSTRUCT menu, select LINE > CIRCLE.

CAM2 Measure will create a line with 2 points.

Use the mouse to click a point on the bottom sur-face to define a line for Datum B. Watch the PROMPT BAR for instructions.

FIGURE 4-9 Construct X Axis

Label = LINE001.


FIGURE 4-10 Nominal Line Results

CAM2 Measure will create a circle with 3 points.

Use the mouse to click a point on the bottom sur-face to define a circle for Datum C. Watch the PROMPT BAR for instructions.

FIGURE 4-11 Construct X Intercept28ordinate Systems Practical


NOTE: Since a nominal circle was selected only one point is required to define the circle.

7 Take a look at the results.Constructing a Nominal Alignment

1 From the CONSTRUCT menu, select COORDINATE SYSTEM > 3-2-1.


NOTE: The coordinate system is not correct. The nominal line that defines the X axis is pointing in the wrong direction. This will be fixed by flipping the direction of the nominal line.

Label = CIRCLE001.


FIGURE 4-12 Nominal Circle Results

Select a Plane = N_PLANE001.

Direction of Plane= +XY.

Line Defined axis = N_LINE001.


Select Origin = N_CIRCLE001.

Select NOMINAL toggle button.

Click OK.

FIGURE 4-13 Nominal Coordinate System29Chapter 4: Advanced Coordinate Systems Practical


Chapter 4: Advanced CoFlipping Vectors

1 From the FILE menu, select REVIEW FEATURES.

2 Select N_LINE001.

3 Click the FLIP VECTOR button.

4 Click OK to exit REVIEW FEATURES.

Construct the Plane


2 Measure Sphere A.




FIGURE 4-14 Measure Sphere A

Label = SPHERE_A.


If it doesnt look good, press the BACK button but-ton twice to reject. Then re measure the results.

FIGURE 4-15 Sphere Results30ordinate Systems Practical


4 Measure Sphere D.5 Take a look at the results.

6 From the MEASURE menu, select POINT < SURFACE POINT.

7 Measure a surface point on top of the base near the A3 target.



FIGURE 4-16 Measure Sphere D

Label = SPHERE_D.


If it doesnt look good, press the BACK button button twice to reject. Then re measure the feature.


Take three or four points by pressing the FRONT button.

Pull away from the surface and press the BACK button.

FIGURE 4-18 Measure Surface Point

A31031Chapter 4: Advanced Coordinate Systems Practical


Chapter 4: Advanced Co8 Take a look at the results.

Construct the Plane

Construct the XY plane with three offsets using the known Z values on the table.

1 From the CONSTRUCT menu, select PLANE < 3 OFFSETS.

2 Click OK to accept the plane.

Label = SURFPT_A3.



FIGURE 4-19 Point Results

Datum Features

X Y Z

M_SURFPT_A3 25.0

M_SPHERE_D 50.0 42.5

M_SPHERE_A -135.0 -50.0 42.5

Select First Point = M_SPHERE_A.

First Point Offset = 67.5.

Select Second Point = M_SPHERE_D.

Second Point Offset = 67.5.

Select Third Point = M_SURFPT_A3.

Third Point Offset = 25.0.


Click OK.

FIGURE 4-20 Construct Plane 3 Offsets32ordinate Systems Practical

Advanced Measurement Training WorkbookVersion 4.0 - February 2004NOTE: There are two solutions to the constructed plane. Depending on the selection order of the features, the constructed plane will be above or below the features. Using the right hand rule, selecting a counter clockwise direction places the plane on one side, selecting clockwise direction puts it on the other side.

Construct the Line

1 From the CONSTRUCT menu, select LINE < 2 OFFSETS.

2 Click OK to accept the line.

NOTE: There are two possible solutions to the 2 Offset line. The offset is to the right of the line looking from the first selected point to the second selected point. The location of the line depends on which point is selected first.

Complete the Coordinate System

1 From the CONSTRUCT menu, select COORDINATE SYSTEM < 3-2-1.

Select a Plane = C_PLANE001.

Select First Point = M_SPHERE_A.

First Point Offset = -50.0.

Select Second Point = M_SPHERE_D.

Second Point Offset = 50.0.


Click OK.

FIGURE 4-21 Construct Line 2 Offsets

Select a Plane = C_PLANE001.

Direction of Plane = +XY.

Line Defined Axis = C_LINE001.


Select Origin = M_SPHERE_A.


Click OK.

FIGURE 4-22 3-2-1 Coordinate System33Chapter 4: Advanced Coordinate Systems Practical


Chapter 4: Advanced Co


3 From the CONSTRUCT menu, select COORDINATE SYSTEM < TRANSLATION.

Select X Origin = 4 Click OK to accept the coordinate system.

5 From the ALIGNMENT menu, select CAD = PART.

6 Click OK to accept the alignment.

C_COORDSYS001.

X Offset = 135.0.

Select Y Origin = C_COORDSYS001.

Y Offset = 50.0.

Select Z Origin = C_COORDSYS001.

Z Offset = -67.5.



Click OK.

FIGURE 4-23 Translate Coordinate System

Measured Coordinate System = C_COORDSYS002.

Nominal Coordinate System = N_COORDSYS001.

Scale Option = None.

Click OK.

FIGURE 4-24 CAD=Part Alignment34ordinate Systems Practical

Advanced Measurement Training WorkbookVersion 4.0 - February 2004Verify Alignment

1 From the MEASURE menu, select INSPECT XYZ.

Verify that the origin is in the bottom left corner of the base by moving the probe over the part and watching the computer screen.

Press the BACK button or the ESC key to end the command.


3 Complete the missing data on the table. The initial known values given to you should be exact.

Datum Features

X Y Z

M_SURFPT_A3 25.0

M_SPHERE_D 50.0 67.5

M_SPHERE_A -135.0 -50.0 67.535Chapter 4: Advanced Coordinate Systems Practical

Advanced Measurement Training WorkbookVersion 4.0 - February 2004Chapter 5: Advanced CAD to PART Alignments

OBJECTIVE - The instructor will demonstrate how to use nominal and surface data to align a coordinate system. After completing this section the student will know how to use the Feature and Surface Point Alignment.

This section covers several different types of best-fit, CAD-to-PART alignments. They vary from one another by the features that can be used and how the error is distributed in the alignment. The part datum structure and the goal of the measurement session determines the best alignment.

Feature AlignmentFeature alignment uses three point-reducible features to give a more exact alignment without best-fitting. The measurements are only as good as the alignment. An alignment with large error will yield poor measurement results.

When the alignment error is high the measured alignment features do not match their nominals. The only way to troubleshoot high alignment error is to create an CAD to PART alignment. One of the easiest ways to do that is by doing a Feature alignment.

A Feature alignment is accomplished by selecting a Primary, Secondary, and Tertiary feature.

The Feature alignment takes the Primary feature and matches it with its nominal.

3

2

3

2

1

137Chapter 5: Advanced CAD to PART Alignments


Chapter 5: Advanced CA

Then it takes the Secondary Feature and rotates it into the line between the Primary nominal and the Secondary nominal.

3

2

Finally, CAM2 Measure rotates the Tertiary feature about that same line until the tertiary feature is in the same plane as the Tertiary nominal.

32

1

3

3

1

2

238D to PART Alignments


The results are as follows:

The Primary feature has zero deviation.

The Secondary feature has deviation along the line from primary to secondary nominals. The Tertiary feature has deviation in the plane of all three nominal features.

Iterative Alignment with Surface PointsThe previous training courses introduce the Iterative, or Best Fit alignment. Those practical exercises use simple point reducible features. CAM2 Measure is able to use Surface Points and an associated nominal surface for the alignment.

When using surfaces to align to a part at least three surface regions that are roughly to each other must be selected. The 3-2-1 requirement (plane, line, point) must be satisfied when arranging the surface points.

Iterative Alignment with Not Used ValuesWhen to Use This Technique

When the print specifies that only some of the values are used for a particular datum.

When one of the datums is a round slot that is to a coordinate axis. That coordinate axis is not used in the calculation.

When a bore center line is used as a datum and the center line is parallel to a coordinate axis.

When a surface that is parallel to a coordinate plane is used as a datum and no surface is provided.

When one of the alignment features has a very error in one or two coordinate axis and there is enough information to fully constrain.39Chapter 5: Advanced CAD to PART Alignments



Watch Out!

If you dont specify enough values for each coordinate axis, then the part will be . You must shoot for a 3-2-1 situation where:At least 3 Points use one Axis (For example: X)

At least 2 Points use a second Axis (For example: Y)

At least 1 Point must use the last Axis (Z)

If the alignment is under constrained, then the alignment can because there is more than one solution.

Due to best-fit limitations, at least one point must use the coordinate axes.

Important Topics - Advanced CAD to Part Alignments

The number of points selected in an Iterative alignment will have an impact on the processing time for the alignment.

The Feature alignment error at each point can be viewed in Review Features.

The surface point can fall off the surface causing the alignment error to grow larger rather than solving.40D to PART Alignments


Chapter 6: Advanced CAD to PART Alignments PracticalThis section covers several different types of best-fit, CAD-to-PART alignments. They vary from one another by how the error is distributed in the alignment and the features that can be used.

REMEMBER: The alignment used will be determined by the part datum structure and the goal of the measurement session.

PRACTICAL EXERCISE - Feature Alignment1 From the FILE menu, select NEW.






Click OK.



Click OPEN.

FIGURE 6-2 Load Tolerances41Chapter 6: Advanced CAD to PART Alignments Practical


Chapter 6: Advanced CA6 From the MEASURE menu, select MEASUREMENT TEMPLATE.

7 Select CIRCLE from the drop-down window.

8 Click the KEY IN button .


X Y Z Diameter

Circle 9 0.0 0.0 0.0 100.0

Circle 1 0.00 70.0 0.0 20.0

Circle 3 70.0 0.0 0.0 20.0

X= 0.0, Y = 0.0, Z = 0.0, Diameter = 100.00.

I = 0, J = 0, K = 1.

Coordinate System = *WORLD*.

Select the NOMINAL toggle button.

Click OK.

FIGURE 6-3 Construct Circle Enter Values

Label = CIRCLE009.

Click OK to accept the cir-cle.

FIGURE 6-4 Circle results42D to PART Alignments Practical

Advanced Measurement Training WorkbookVersion 4.0 - February 200410 Click the KEY IN button .


12 Click the KEY IN button .

X= 0.0, Y = 70.0, Z = 0.0, Diameter = 20.00.

I = 0, J = 0, K = 1.



Click OK.

FIGURE 6-5 Construct Circle Enter Values

Label = CIRCLE001.


FIGURE 6-6 Circle results

X= 70.0, Y = 0.0, Z = 0.0, Diameter = 20.00.

I = 0, J = 0, K = 1.



Click OK.

FIGURE 6-7 Construct Circle Enter Values43Chapter 6: Advanced CAD to PART Alignments Practical


Chapter 6: Advanced CA13 Take a look at the results.

14 Click OK to run the template.

Remember that circles are 2D features and require a plane. A plane has not been measured a plane; however, CAM2 has an option to DEFINE a plane during a 2D feature command.



Label = CIRCLE003.


FIGURE 6-8 Circle results


Offset = 0.

Click OK.




FIGURE 6-10 Measure XY Plane44D to PART Alignments Practical

Advanced Measurement Training WorkbookVersion 4.0 - February 200417 Measure Circle 9.

18 Click OK to accept the circle.



Take four or five points around the circle by pressing the FRONT button.

Move to the center of the hole and press the BACK button.

FIGURE 6-11 Measure Circle 1


Offset = 0.

Click OK.




FIGURE 6-13 Measure XY Plane45Chapter 6: Advanced CAD to PART Alignments Practical


Chapter 6: Advanced CA21 Measure Circle 1.








Offset = 0.

Click OK.




FIGURE 6-16 Measure XY Plane46D to PART Alignments Practical



27 From the ALIGNMENT menu, select FEATURE.



Select M_CIRCLE009.

View Style = Tabular.

Enter the Deviation values for X, Y and Z into the following table.

Repeat for M_CIRCLE001 and M_CIRCLE003.

NOTE: Circle 9 will have zero deviation, Circle 1 will have deviation along the Y axis, and Circle 3 will have deviation along the X and Y axis.




Primary Point = M_CIRCLE009_I.

Secondary Point = M_CIRCLE001_I.

Tertiary Point = M_CIRCLE003_I.


Click OK.

FIGURE 6-18 Feature Alignment

Deviation X Deviation Y Deviation Z

M_CIRCLE009_I

M_CIRCLE001_I

M_CRICLE003_I47Chapter 6: Advanced CAD to PART Alignments Practical


Chapter 6: Advanced CAPRACTICAL EXERCISE - Iterative Alignment with Surface Points

Secure the black plastic shell on top of the plate.

1 From the FILE menu, select OPEN.


FIGURE 6-19 FARO Shell


File name = Shell1.sat.

Click OPEN.

FIGURE 6-20 File Open

FARO Standard Demonstration Part - ShellISO View48D to PART Alignments Practical

Advanced Measurement Training WorkbookVersion 4.0 - February 2004NOTE: The current part preferences are saved in the *.sat format and recalled automatically when that file is opened. It is not necessary to set part preferences for this file.

3 From the MEASURE menu, select POINT < SURFACE POINT.

4 Measure point 1.


Take three or four points on the surface by pressing the FRONT button.



Label = SURFPT001.


If it doesnt look good, press the BACK button button twice to reject. Then re-measure the feature.


149Chapter 6: Advanced CAD to PART Alignments Practical


Chapter 6: Advanced CA6 Measure point 2.


8 Measure point 3.




Label = SURFPT002.


If it doesnt look good, press the BACK button button twice to reject. Then re-measure the fea-ture.





2

350D to PART Alignments Practical


10 Measure point 4.


Label = SURFPT003.




Take three or four points on the surface by press-ing the FRONT button.



Label = SURFPT004.




451Chapter 6: Advanced CAD to PART Alignments Practical


Chapter 6: Advanced CA12 Measure point 5.


14 Measure point 6.




Label = SURFPT005.







5

652D to PART Alignments Practical


Using Surfaces as Nominals


2 Click on the NOMINALS tab.

3 Select M_SURFPNT001 through M_SURFPNT003.

4 Click the FROM SCREEN button .

5 Click OK to accept the nominal surface.

6 Select M_SURFPNT004 through M_SURFPNT005.

Label = SURFPT006.




Using the mouse select the surface on the top of the CAD model.

FIGURE 6-33 Surface 153Chapter 6: Advanced CAD to PART Alignments Practical


Chapter 6: Advanced CA7 Click the FROM SCREEN button .


9 Select M_SURFPNT006.

10 Click the FROM SCREEN button ,



Using the mouse select the surface on the side of the CAD model.

FIGURE 6-34 Surface 2

Using the mouse select the surface on the side of the CAD model.

FIGURE 6-35 Surface 354D to PART Alignments Practical

Advanced Measurement Training WorkbookVersion 4.0 - February 200413 From the ALIGNMENT menu, select ITERATIVE.

The alignment calculations stop when the smallest error, between the measured points and the nominal surfaces is found.


15 From the MEASURE menu, select POINT < INSPECT SURFACE.

Touch anywhere on the part and press the FRONT button.

Pull away from the part and press the BACK button.

16 Take 2 more points on the FARO shell.

NOTE: Surface point alignment is appropriate when aligning to a part with less than three, or no point-reducible features that have CAD surfaces.

PRACTICAL EXERCISE - Iterative Alignment with Not Used ValuesIn this case, the X value of circle 1, the Y value of circle 3 and 7, and the Z values of the surface points will be used to construct an alignment.



Select M_SURFPNT001 through M_SURFPNT006.

Set Weights = unchecked.


Click OK.

FIGURE 6-36 Iterative Alignment


Click OK.

FIGURE 6-37 Drawing Units55Chapter 6: Advanced CAD to PART Alignments Practical


Chapter 6: Advanced CA3 From the FILE menu, select PREFERENCES.




From the PART PREFERENCES, click LOAD.


Click OPEN.



Filename = FARO_Demo_Part4.igs.


Click OPEN.


FIGURE 6-40 FARO_Demo_Part4.igs56D to PART Alignments Practical

Advanced Measurement Training WorkbookVersion 4.0 - February 2004Measurement Template

1 From the MEASURE menu, select MEASUREMENT TEMPLATE.

2 Add Circle 1 to the Measurement Template.


From the ADD A NOMINAL drop-down select Circle.

Select the FROM SCREEN button.

FIGURE 6-41 Measurement Template

Using the mouse click on Circle 1 of the CAD model.

FIGURE 6-42 Circle 1

Label = CIRCLE001.

Click OK to accept. Circle 1 will be highlighted red.

FIGURE 6-43 Circle 1 Results57Chapter 6: Advanced CAD to PART Alignments Practical


Chapter 6: Advanced CA4 Add Circle 3 to the Measurement Template.


6 Add Circle 7 to the Measurement Template.

Using the mouse click on Circle 3 on the CAD model.

FIGURE 6-44 Circle 3

Label = CIRCLE003.

Click OK to accept. Circle 1 and Circle 3 will be high-lighted red.

FIGURE 6-45 Circle 3 Results

Using the mouse click on Circle 7 on the CAD model.

FIGURE 6-46 Circle 758D to PART Alignments Practical


8 Right mouse click on the CAD screen to accept the three circles and return to the Measurment Template.

9 Click OK to measure the three circles.

Remember that circles are 2D features and require a plane. A plane has not been measured. However; CAM2 has an option to define a plane during a 2D feature command.


Notice that Circle 1 is highlighted red. This is to guide to the correct circle.

Label = CIRCLE007.

Click OK to accept. Circle 1, Circle 3 and Circle 7 will be highlighted red.

FIGURE 6-47 Circle 7 Results

FIGURE 6-48 Measurement Template


Offset = 0.

Click OK.

FIGURE 6-49 Select Plane59Chapter 6: Advanced CAD to PART Alignments Practical


Chapter 6: Advanced CA11 Measure the plane on the top of the plate.

12 Measure circle 1.









Select a Plane = M_CIRCLE001. This will be the plane to which the points are projected.

Offset = 0.

Click OK.

FIGURE 6-52 Select Plane60D to PART Alignments Practical




18 Measure Circle 7.





Select a Plane = M_CIRCLE001. This will be the plane to which the points are projected.

Offset = 0.

Click OK.




FIGURE 6-55 Measure Circle 761Chapter 6: Advanced CAD to PART Alignments Practical


Chapter 6: Advanced CAUsing Surface Points

1 From the MEASURE menu, select POINT > SURFACE POINT.


3 Continue measuring surface points.

Take three or four points on the top surface by pressing the FRONT but-ton in a small triangular pattern.

Pull off the surface and press the BACK button.

FIGURE 6-56 Surface Point 1

Label = SURFPT001.






FIGURE 6-58 Surface Point 262D to PART Alignments Practical


5 Continue measuring surface points.


Label = SURFPT002.


If it doesnt look good, press the BACK button button twice to reject. Then re-measure the point.




FIGURE 6-60 Surface Point 3

Label = SURFPT003.


If it doesnt look good, press the BACK button button twice to reject. Then re measure the fea-ture.

FIGURE 6-61 Point Results63Chapter 6: Advanced CAD to PART Alignments Practical




Select M_SURFPT001, M_SURFPT002, M_SURFPT003.

Click on the NOM-INALS tab.8 Click the OK button to accept the nominal surface.

9 Click OK the exit REVIEW FEATURES.

10 From the ALIGNMENT menu, select ITERATIVE.

Click on the FROM SCREEN but-

ton .

Using the mouse select the surface on the top of the CAD model.

FIGURE 6-62 Review Features

Select the M_CIRCLE001_I, M_CIRCLE003_I, M_CIRCLE007_I, M_SURFPT001, M_SURFPT002, and M_SURFPT003.

Set Weights = checked.


Click OK.

FIGURE 6-63 Iterative Alignment64D to PART Alignments Practical

Advanced Measurement Training WorkbookVersion 4.0 - February 200411 In the ITERATIVE ALIGNMENT USED VALUES dialog box, change the weights of the three circles.

NOTE: The surface points can not be weighted. The nominal surface constrains the points to the surface normal to the surface.

12 Click OK to accept the aligment.

NOTE: Neglecting the Z values of the measured circles will only consider their X and Y location for the Iterative alignment. The surface points lock the Z values.

Left mouse click on the check marks to turn off the Y and Z values for M_CIRCLE001.

Left mouse click on the check marks to turn off the X and Z values for M_CIRCLE003 and M_CIRCLE007.

Click OK and wait for the alignment to solve.

FIGURE 6-64 Set Weights65Chapter 6: Advanced CAD to PART Alignments Practical


Chapter 7: Point Measurement

OBJECTIVE - The instructor will demonstrate how to use

points for inspection. After completing this section the student will be able to use the surface point commands to inspect parts.

Point MeasurementsComp Off and Comp Axis

Comp Off points do not compensate. The point will be taken at the center of the probe. These points are idea for use in all Device Position commands and to check movement in the part or measurement device. Comp Axis points will compensate along a coordinate axis, so they can only be used to measure surfaces that are parallel to the coordinate planes: , and . The BACK button must be pressed after pulling away to the coordinate plane the point will compensate towards.

High Point and Low Point

These commands will find the point furthest (High Point) or nearest (Low Point) to a Plane, Line or Point. When the Scan Measurement Part Preference is On, these commands capture points as it receives them from the measurement device.

Surface Measurements

If the surface is not parallel to a coordinate plane the command must be used. This command uses three or more measured points and a compensation point to calculate a single point on a small planar surface.

Probe CenterXYZ to beinspected

How do we determine thevector?

Surface67Chapter 7: Point Measurement


Chapter 7: Point Measure

The command guides the measurement device to a specific XYZ location to measure a point. CAM2 Measure provides three different probe compensation options for the Home in command.

Option 1 - Key in IJK compensation direction (if it is known).

Option 2 - Extract the compensation direction from a CAD surface. This direction is the normal vector of the surface, at the XYZ point location.

Option 3 - Sample the compensation direction from the part surface by measuring the surface. Sample surface requires three points in a mini-plane (FRONT button) and one compensation point (BACK button).

If the vector is known use Option 1. If a CAD surface is available use Option 2. If the vector is not known and a CAD surface is not available use Option 3.

Since it is very difficult to move the probe to an exact XYZ location, the Home In command requires a Home In Zone. The surface you are measuring should approximate a flat plane within the Home In zone. If the surface is curved, your measurement may include .

Home In Zone (diameter)Home In Vector

Final Compensated Point

Home In Vector

R Curv

ature

R ZoneR Zone

Surface

Measured point with error68ment

Advanced Measurement Training WorkbookVersion 4.0 - February 2004To calculate the maximum Home In Zone, use the following equation:

Enter the maximum acceptable cosine error and the radius of curvature of the surface and get the maximum allowable Home In Zone radius. Usually, the cosine error will be much smaller than the accuracy of the measurement device.

Checking the Same Points on Another Part

The list of points in the Home In command can be saved to file. CAM2 Measure creates an ASCII text file with all the data. The Home In command can import the file to check the same location on another similar part. The Home In file has the extension *.hmi.

The Home In command also saves and imports the ACL format (GOTO/ X, Y, Z, I, J, K). The ACL file has the extension *.acl.

Important Topics - Point Measurement Home In Point files (*.hmi) allow you to save a series of home-in

points to be saved for use in other measurement sessions.

The Select Surface Home In option requires a CAD surface.

R Zone:= RCurvature2

_ R( Curvature _ ErrorCosine)269Chapter 7: Point Measurement

Advanced Measurement Training WorkbookVersion 4.0 - February 2004Chapter 8: Point Measurement Practical

PRACTICAL - Surface Measurement1 From the FILE menu, select NEW.







Click OK.



Click OPEN.



Filename = Bracket1.igs.


Click OPEN.

FIGURE 8-3 Import CAD Drawing71Chapter 8: Point Measurement Practical


Chapter 8: Point Measure7 From the VIEW menu, select ZOOM < ZOOM ALL to fit the CAD model in the screen.

Measuring the Alignment Features



FIGURE 8-4 Bracket 1.igs file



FIGURE 8-5 Measure XY Plane72ment Practical




6 Measure the line.

Label = PLANE001.




Select a Plane = M_PLANE001. This will be the plane to which the points are projected.

Offset = 0.

Click OK.


Take the three or four points from the S1 end towards S2 by pressing the FRONT button.

Pull away from the surface and press the BACK but-ton.

FIGURE 8-8 Measure Line 1

S1

S273Chapter 8: Point Measurement Practical


Chapter 8: Point Measure7 Take a look at the results.

8 Continue with the command and measure a line.


Label = LINE001.




Take the three or four points along the S1 edge by pressing the FRONT but-ton.



Label = LINE002.




S1

S274ment Practical

Advanced Measurement Training WorkbookVersion 4.0 - February 2004Constructing the Alignment

The correct amount of measured features for a Line/Line Intersection coordinate system has been measured. These features are a measured match for the nominal coordinate system.

1 From the CONSTRUCT menu, select COORDINATE SYSTEM < LINE/LINE.


FIGURE 8-12 CAD Model with Measured Alignment Features

Select a Plane = M_PLANE001.

Line Defined X-Axis = M_LINE001.

Select a Line = M_LINE002.

Click the CONSTRUCTED toggle button.

Click OK to create the coordinate system.

FIGURE 8-13 Line/Line Coordinate System75Chapter 8: Point Measurement Practical


Chapter 8: Point Measure3 From the ALIGNMENT menu, select CAD=PART.


High Points



Nominal Coordinate System = *WORLD*.


Click OK.

FIGURE 8-14 CAD=Part Alignment

FIGURE 8-15 Aligned to CAD Model76ment Practical

Advanced Measurement Training WorkbookVersion 4.0 - February 20042 From PART PREFERENCES, select SCAN MEASUREMENT.

3 Click OK in the PREFERENCES dialog box to exit.

NOTE: The SCAN MEASUREMENT can be turned on or off using the X key on the keyboard.

4 From the MEASURE menu, select POINT < HIGH POINT.

5 Place the probe on the top of the sphere.

Type of Scanning = Start/Pause Scan With Trigger

Maximum Distance = 1000000000000.

Minimum Distance = 2.0.

FIGURE 8-16 Scan Measurement Preference

Select a Feature = M_PLANE001.

Feature Type = Plane Reducible.

Click OK.

FIGURE 8-17 Select Feature

Press the FRONT but-ton and scan over the top of the surface.

Press the FRONT but-ton to pause the scan.


FIGURE 8-18 Measure High Point77Chapter 8: Point Measurement Practical


Chapter 8: Point Measure6 Take a look at the results.

Home-in Options

Before using the Home-in function to inspect points, create some of the nominal points that will be checked.

1 From the CONSTRUCT menu, select POINT < ENTER VALUES.

Label = POINT001.




Label X Y Z

HMI_1 55.00 36.50 41.00

HMI_2 55.00 49.00 66.20

HMI_3 55.00 25.00 14.49

Enter the nominal information from the table above.


Choose the NOMINAL toggle button.

Click OK to create the point

FIGURE 8-20 Construct Point Enter Values78ment Practical



Label = see table.

Click OK to accept. 3 Repeat these steps for each point.


5 From PART PREFERENCES, select SCAN MEASUREMENT.

6 Click OK in the PREFERENCES dialog box to exit.


Type of Scanning = No Scanning.

FIGURE 8-22 Scan Measurement Preference79Chapter 8: Point Measurement Practical


Chapter 8: Point MeasureThree Coordinates, Key-in I, J, K

1 From MEASURE menu, select POINT < HOME IN.

2 Click the ADD button.

NOTE: The approach vector is 0,-1,0. This is known because of the orientation of the part. The approach is from the negative Y direction, so a negative J value is used. Note how only the Y value will change when the point is measured.

Three Coordinates, Select Surface


NOTE: The approach vector will be extracted from the surface, normal to the surface at the location of the nominal point.

Coordinate = N_HMI_1.

Approach Vector: I = 0, J = -1, K = 0.


Rotation Angle = 0.

Home-In Zone = 1.0.

Approach Vector = KEY IN.

Click OK.

FIGURE 8-23 Create Home In Point



Rotation Angle = 0.

Home-In Zone = 1.0.

Approach Vector = SELECT SURFACE.

Click OK.

FIGURE 8-24 Create Home In Point80ment Practical


Three Coordinates, Sample Surface



Coordinate System = C_COORDSYS001.NOTE: The approach vector is calculated from the small sampled plane that is digitized within a enlarged Home In Zone. This method should be used in the absence of CAD surfaces.

Save the Home In File

Before measuring the Home In Points, save the points to a file that can be imported directly into the Home In command later. This is an excellent way of taking point and vector data on one part and then using the XYZ, IJK data to inspect another part using the Home In format.

1 Click the EXPORT FILE button.

Rotation Angle = 0.

Home-In Zone = 1.0.

Approach Vector = SAMPLE SURFACE.

Click OK.

FIGURE 8-25 Create Home In Point

File name = your initials - Home In.

Save as Type = Home In Files (*.hmi).

Click SAVE.

FIGURE 8-26 Save HIM file.81Chapter 8: Point Measurement Practical


Chapter 8: Point MeasureMeasure the Home In Points

1 Click the OK button in the HOME IN POINT dialog box to start measuring the three points.

2 Measure HMI_1.

NOTE: One measurement point is required to capture the point. The measured point will be offset for the radius of the probe along the surface vector that was entered.


4 CAM2 Measure is prompting the operator to select a surface of HMI_2.

5 Measure HMI_2.

NOTE: One measurement point and one compensation point is required to capture the point. The compensation point is required to determine which side of the CAD surface the point was measured.

Label = HMI_1.




Using the mouse click on the top surface.

Select the face on the outer surface of the part.

FIGURE 8-28 Select Surface

S1

S282ment Practical


7 Measure HMI_3.

NOTE: Four measurement points and one compensation point are required to capture the point. The first three measurement and compensation points are used to determine the surface vector. The last measurement point is used to capture the point.


Label = HMI_2.


If it doesnt look good, press the BACK button button twice to reject. Then re-measure the feature.


Label = HMI_3.


If it doesnt look good, press the BACK button but-ton twice to reject. Then re-measure the feature.

FIGURE 8-30 Point Results83Chapter 8: Point Measurement Practical

Advanced Measurement Training WorkbookVersion 4.0 - February 2004Chapter 9: Scanning and Comparing to CAD Practical

Practical ExerciseSet the alignment by measuring the datum features. In this case, the top face of the plate will be your base plane and the edges of the plate will define the X-axis and origin, respectively.



FIGURE 9-1 Faro Demonstration Bracket


Click OK.


S1

S285Chapter 9: Scanning and Comparing to CAD Practical


Chapter 9: Scanning and3 From the FILE menu, select PREFERENCES.






Click OPEN.



Filename = Bracket1.igs.


Click OPEN.


FIGURE 9-5 Bracket 1.igs file86 Comparing to CAD Practical

Advanced Measurement Training WorkbookVersion 4.0 - February 2004Measuring and Creating an Alignment









Label = PLANE001.


If it doesnt look good, press the BACK button to reject. Then re-measure the fea-ture.


Select a Plane = M_PLANE001. This will be the plane to which the points are pro-jected.

Offset = 0.

Click OK.

FIGURE 9-8 Select Plane87Chapter 9: Scanning and Comparing to CAD Practical


Chapter 9: Scanning and6 Measure the line.


8 Continue with the command and measure a line.

Take the three or four points from the S1 end towards S2 by pressing the FRONT button.



Label = LINE001.




Take the three or four points on the S1 edge by pressing the FRONT but-ton.



S1

S2

S1

S288 Comparing to CAD Practical



10 From the CONSTRUCT menu, select COORDINATE SYSTEM < LINE/LINE.


CAD=Part

1 From the ALIGNMENT menu, select CAD=PART.


Label = LINE002.




Select a Plane = M_PLANE001.

Line Defined X-Axis = M_LINE001.

Select a Line = M_LINE002.

Click the CONSTRUCTED toggle button.

Click OK.

FIGURE 9-13 Line/Line coordinate system


Nominal Coordinate System = *WORLD*.


Click OK.

FIGURE 9-14 CAD=Part AlignmentChapter 9: Scanning and Comparing to CAD Practical


Chapter 9: Scanning and3 From the FILE menu, select SAVE AS.

4 The SAVE AS dialog box is displayed.

Scan Measurement Preference


2 From the PART PREFERENCES, select SCAN MEASUMENTS.

File name = Surface Profile.

Save as type = CAM2 Measure (*.sat).

Click SAVE.

FIGURE 9-15 Save As

Type of Scanning = Start/Pause Scan With Trigger.

Maximum Distance = 1000000000000.

Minimum Distance = 2.0.

FIGURE 9-16 Feature Scanning90 Comparing to CAD Practical


3 From the PART PREFERENCES, select MISCELANEOUS.

Save Scan Lines as Fea-tures = Yes.4 Click OK in the PREFERENCES dialog box to exit.

Parallel Lock Planes

1 From the MEASURE menu, select SCAN < PARALLEL LOCK PLANES.


FIGURE 9-17 Feature Scanning

Increment = 10.0 (0.50 in).

Number of Planes = 100.

Minimum Distance = 0.5 (0.05 in).

Save As = Open Polylines.

Click OK.

FIGURE 9-18 Parallel Lock Plane Scan

Select a Plane = YZ_C_COORDSYS001.

Offset = 0.

Click OK.

FIGURE 9-19 Select Plane91Chapter 9: Scanning and Comparing to CAD Practical


Chapter 9: Scanning an3 Scan the surface.

4 Save the scan data.

5 Click OK to accept the polyline results.

Show Surface Deviation


2 Select the M_SURFACE###-### polyline features.


Press the FRONT button to begin scanning.

Move the probe across the surface contour.

Press the FRONT button to pause the scan.

Press the BACK button to end the scan.

FIGURE 9-20 Parallel Locked Scanning

To keep the scan data, press the FRONT button.

To discard the scan data, press the BACK button.

FIGURE 9-21 Keep Data?

Readings = checked.

Whiskers = checked.

FIGURE 9-22 Surface Whiskers92d Comparing to CAD Practical

Advanced Measurement Training WorkbookVersion 4.0 - February 2004Rescale Whiskers

The whiskers will now give a graphical display of deviation to the CAD surface. A green whisker shows a deviation less than the tolerance. A yellow whisker shows deviation greater than seventy-five percent of the tolerance. A red whisker shows a deviation greater than the tolerance.

1 From the DIMENSION menu, select WHISKER > DECREASE. This will reduce the whisker length.

2 From the DIMENSION menu, select WHISKER > INCREASE. This will increase the whisker length.

3 Rescale the Whiskers on the part to best view the deviation.

Printing and Saving a Text

Documents

08m13e09 - Advanced Measurement Training Workbook for the Student - February 2004.pdf