CAD Manual
Contents
1. 15 SESS ME ESI TT TUE 15 9 19 2 E 16 3 13 3 Rainbow shaded colour coding 16 e 3 13 4 Display probe button 16 l 3 13 5 Toggle between point boxes and tails E Em 16 3 14 Transparency slider amp line thickness buttons 17 4 0 ALIGNING TO THE CAD MODEL eere nnn 19 4 1 Aligning using Geometric 19 4 1 1 Unlinking Geometric Features from the CAD Model 25 4 2 Aligning without using Geometric Features 25 4 3 Aligning Turned parts using just two Geometric Features 29 CHANGE 31 1 0 ANINTRODUCTION TO THE CAD COMPARISON MODULE The standard Aberlink 3D Measurement software allows simple measurement of geometric features Its limitation however is if the component being measured contains complex surfaces that cannot be easily be split into simple planes lines and circles etc But now the Aberlink CAD Comparison module will allow the user to import a solid model into the Aberlink 3D software in either an IGES or a STEP format and having performed an alignment on the component measurement points can then be taken on the2. DINE Tabulated Points Inspector eris 7 Material Bel tS t amp v Colour Customer Aberlink Order N C Blac hite ABI PSI 890776 Date You can print in colour or 22 0007 1 00 O O O Oo black amp white You can print the image in the CAD window or Table of the points you have measured 22 Oct 07 11 00 Motes ou can put notes here iM Create Print Report File l Frinter New Add Print File Print me You can save the report as a file on Y h hich the computer By using the ou can choose whic printer you wish to print button you add more features to your the report on here report before printing it P When you click on the Print Button you will open the Print CAD Report Window from within this window it is possible to give the report a title as well as entering a part number serial No date ect by typing info into border title boxes You can customize the border title by clicking on them To print the report click on the Print button a print pre view window will appear giving you a number of options Print Prints to page Cancel Cancels the print The Excel button sends the report to 13 Microsoft Excel The print range window allows you
3. 397 878mm Z 468 967mm n nes gone e SEGO we Add more points if necessary or click OK When the OK button is clicked the RMS root mean square error of all the points will be displayed in the top right hand corner of the CAD Window together with a progress bar to show that calculations are ongoing When the software has performed the optimum alignment ie the RMS value for the error of the points cannot be reduced a prompt stating CAD Alignment complete will appear and the error of the measured points will be displayed in the CAD Window o v 7 gpi ne 0000 a E e E Eeee Wiha E B 7 gt X 332 000 _ Pm Y 397 877mm a Z 468 967mm n 397 97 2 35 1 566 Statue CC 20 2 A genes cioe iore x 28 Simply OK the prompt The component on the machine has now been aligned to the CAD Model and measurements against the CAD Model can now commence The error of the points measured thus far in the Curve Measure Unit will be displayed in the CAD Window You can now either continue to take more points within the same Curve unit and these points will be added to the points already measured or OK the Curve Measure Window and open a new measurement window of any type 4 3 Aligning Turned parts
4. Meth 9 2 X 242 507mn 4 0 Y 270 125mn Z 341 182mn lt p VUES pine nones 000 0000 1000 1 71715 4331 212007162 0n piece Aun A e Part Bp enr ulge i OK the prompt and also OK the Plane Measure Window 2 Now repeat the process for one of the holes in the top face Open a Circle Measure Window and take measurement points in the hole Then link the circle to CAD by clicking on the Link to CAD button as described above This time the Model will default to a wire frame in order to make it easier to select the correct circle on the model 21 181 xj 4 pation a sine cr edge referenced 2 plane el an THE c 6 89 89 d 62 Cam CAD Feature inked 23602 A qr d et SEE PC ee a i cl Y 267 358mn B m SENS ox Z 345 712mn Orolo ose 653 940 433 212 ION 18392 2 775 4 240 301 262 401 2 340 457 Status CK Aba or giu tasca een rar 36 can Part vene IgE ine Note that you may want to use the zoom rotate and pan tools in order to easily select the required hole and that you can always look at the shaded model by using the Show Faces button in order to help identify the correct hole and then revert back to the wire frame using the Show Edges button before selecting it When you have
5. TERT K Retake Clear Delete Plane Construct Set Ref gt 10 x 9 62 62 82 69 62 En Aberlink 3D Software xl CAD Feature linked Ra Eh N 4 gt lt X 236 05 mn 4 0 Y 280 600mn 2 344 804mn Line direction 0 339 0 941 0 000 through 77 746 10 605 212 000 and 69 187 13 151 212 000 244 345 259 936 7 340 310 Controler Status OK Abe Asta rt cd BB 30 software 30 cap view Sr untitled Paint Einem leasure KT EST 15 11 Note that you may want to use the zoom rotate and pan tools in order to easily select the required line and that you can always look at the shaded model by using the Show Faces button in order to help identify the correct edge and then revert back to the wire frame using the Show Edges button before selecting it When you have selected the appropriate line on the CAD Model the colour of the line will again change and the prompt appear stating CAD Feature Linked OK the prompt Assuming that the alignment has been completed successfully a further prompt will appear as follows 23 alignment complete Simply OK the prompt and OK the Line Measure Window The component on the machine has now been aligned to the CAD Model and measurements against the CAD Model can now commence 24 4 1 1 Unlinking Geometri
6. ease of selection 3 7 Show Points p 7 This button will show any vertices on the CAD Model as points as follows 10 lau EN Although this is rarely used in certain circumstances may be helpful and clicking on any of the points using the selection tool will display the co ordinates of that point 3 8 Pre set Views ey ey ey ey ey ey These buttons can be used for aligning the CAD Model to pre set views as follows The first button will select the standard isometric view of the Model as when first imported CAD View REL 11 And then the next six buttons can be used to call up any of the six 2D views available ie both XY both XZ and both YZ views as follows 3 9 Custom view Buttons e d As well as the six standard views it is possible to save three custom views by assigned them to the custom view buttons C1 to C3 To assign a custom view button use the rotate zoom amp pan button to move the CAD model around in the window to get the view you desire Next hold the shift key down on the keyboard and at the same time using the mouse left hand click on one of the custom view button this will assign that view to that button Every time you click on a custom view button you will recall the view allocate to that button 12 3 10 The Print Button 5 Print GAD Report rB Border Frint Details Title Small Black gt Drawing Mo 1734558 Imag m i Serial
7. selected the appropriate circle on the CAD Model the colour of the circle will again change and the prompt appear stating CAD Feature Linked OK the prompt and also OK the Circle Measure Window If you have trouble selecting a circle on the CAD Model it may be that it is because it hasnt been drawn as a circle but possibly as a spline curve When you Select it check the description below the graphic window ipi xi SSH e 2 I P P 62 62 69 02 69 T C Vies Check here to see if the CAD Model has been drawn as a circle or as a Spline Curve ia Edge Bspline curve through 44 227 0 081 7 222 and 27 041 18 836 5 308 3 If this is the situation then you cannot use this feature to link to CAD Either select another geometric feature to use or alternatively you will have to use the 6 point alignment described in section 4 2 below Finally repeat the process for one of the straight edges in the top face measuring it as a line Open a Line Measure Window and take measurement points along the edge Then link the line to CAD by clicking on the Link to CAD button as previously Again the Model will default to a wire frame in order to make it easier to select the correct line on the model pum E T seo Points Taken Line P i j 06 3 k 0 000 Points 0 005 atum o lc P X 240 503 280 804 Z 343 670 e 0 002 fi F 0 006 mirum Tt O EH
8. the window and drag to produce a rotation 2 BU CAD View 7 Line direction 0 866 0 500 0 000 through 0 000 17 257 0 000 and 29 000 34 000 0 000 Note that the centre of rotation is always about the centre of the screen and can be about any of the three perpendicular axes 3 3 Zoom Tool 3 The Zoom tool will zoom in and out about the centre of the screen Ww i rer Line direction 0 866 0 500 0 000 through 0 000 17 257 0 000 and 29 000 34 000 0 000 Line direction 0 866 0 500 0 000 through 0 000 17 257 0 000 and 29 000 34 000 0 000 Close Close Click and drag downwards to zoom in and upwards to zoom out O 3 4 Pan Tool The Pan tool will allow the user to move the CAD Model within its window ge nemi RFS AN e ES Line direction 0 666 0 500 0 000 through 0 000 17 257 0 000 and 29 000 34 000 0 000 pem Simply click and drag to desired position 3 5 Show Faces f 8 This button will shade the model as shown in all illustrations shown above 3 6 Show Edges a Rather than being shaded it is also possible to display the CAD Model in a wire frame format as follows 3D CAD View RIGA 6lm 9 eam adddeeiaaoo sxxmm This can be useful when selecting specific geometric shapes on the model Note that when linking Lines and Circles to the CAD Model the Model will automatically default to wire frame to aid
9. to select which pages you wish to print 3 10 1 Report File It is also possible to create a file on the computer and down the print outs to it to make a report To do this click on the new button this opens a file window enter the name of the file you wish to enter the result into And click OK Now every time you click the add button you add data to that file fila ZEE Save in Local Disk C t er Fe Aberlink Manuals My Recent Documents and Settings Documents Downloads 3 31386 Program Files Desktop Software SUPPORT TOoLscD Cj VALUEADD 9 WINDOWS My Documents Computer amp File name Test Block v3 071022 1146 Network Save as type CAD Report Cancel Places Mn 3 11 Uncross Boxes Button When data boxes are displayed on the screen the lines from the boxes to the points on the CAD model are sometimes crossed this can make the screen confusing If you click this button the boxes rearrange them self s so the lines do not cross 3 12 Change colour Button This button allows you to change the colour of the model selected surface probe amp background using a standard colour change window 14 3 13 Set Error and Tolerance Button This button opens the set error amp tolerance window 5et Error Scale amp Tolerance Error scale 98 1 Error scale slider Tole
10. using just two Geometric Features If you have a turned part without any feature to time it like a keyway or a slot It is possible to align the part to the CAD using just two geometric features If we use the part below as an example it is possible to align the part by measuring just the top face and outside diameter A After you linked both the top face and the outside diameter to CAD a new button will appear in the CAD window To finish the alignment just click on the above button the is now aligned 29 CAD window showing the turned part alignment button this button appears after the 2 feature has been linked to the CAD 3D CAD KGL a qp Vertex at 3 767 0 000 1 857 Close 30 CHANGE HISTORY Date of Change Description of Change Changed by 23 10 07 Up dated manual to 30 20 85 CJH 31
11. ABERLINK CAD COMPARISON SOFTWARE MODULE USER MANUAL File Edit Measurement Custom Utilities Stylus Help ties Stylus 8 gy gf pe T P P E EEA TEA Bi 4 gt 0 X 358 921 Y 97 978 Z 36 288 Controler Status OK Aberlink 3d OK A90 90 5 1 Machine State 11 32 tex Gye Aberlink 3D Software ts cap view e 1132 Making 3D measurement as easy as it can be 1 0 AN INTRODUCTION TO THE CAD COMPARISON MODULE 3 2 0 IMPORTING THE CAD MODEL enn 4 2 1 Use selection filter cesses m I Im IRR 5 3 0 THE CAD MODEL WINDOW een Henn 6 3 1 The Select Tool R Pr T 3 2 The Rotate Tool XEEj 225seeemRIRRRRRRIRRRIRRR Rt RR ItReretrrttttttttrrii T 3 3 Zoom Tool 8 zs 3 4 Pan Tool ERE 9 3 5 Show Faces 9 3 6 Show Edges 3 7 Show Points saii 10 38PreseViews G E GP 27 T 3 9 Custom view Buttons 12 3 10 The Print Button 5 13 SELON ise T EET 14 Md 3 11 Uncross Boxes Button eee 14 3 12 Change colour Button E ee eee ere 14 3 13 Set Error and Tolerance Button _ _____
12. AD Model After this has been completed all measured points for any type of measurement unit will be displayed on the CAD Window and their error from the CAD Model reported So in practice to align the component to the CAD Model using geometric features it is possible to use the following procedure 1 Call up a Plane Measure Window in the standard Aberlink 3D software and measure a Plane on the top face of the component 21 xi kk 2 Section 2 Points Taken Plane Position i 0 000 j 0 000 D 343 589 Points Fit 0 01 paum o Ofc P H J a spass E X 242 518 Y 270 157 Z 342 577 0 007 Retake Delete 20 1 This plane could be used to define position along the Z axis and also rotation about 2 This hole could be used to define both the position in the 3 This line could be used to define rotation about the Click on the Link to button E You will then be asked to select the corresponding feature on the CAD Model as follows Aberlink 3D Software x Click the corresponding plane surface OK the prompt make sure the Select Tool is selected in the CAD Window and then click on the Plane on the CAD Model The colour of the plane on the model will change to whatever colour has been chosen for the selected feature and a prompt will appear stating CAD Feature Linked SE OH
13. art If you click on the Best fit button the software tries to best fit all the points to the CAD model the RMS error tells you how well the part has been aligned 18 4 0 ALIGNING TO THE CAD MODEL Having imported a CAD Model into the Aberlink 3D software it is essential that the component being measured and the CAD Model are aligned to each other before any meaningful measurements can be taken This can be done by a number of methods 1 Measuring a minimum of 3 geometric features that fully define the position and orientation of the component and linking them to the CAD Model by clicking on the corresponding features on the Model 2 Measuring a minimum of 6 points on the component that define its position and orientation and also clicking on the CAD Model to show the approximate position of these points on the Model and then doing a best fit alignment through the points 3 Measuring one geometric feature like a plane or a cylinder linking it to the model then measure 3 points on the part link these points to the CAD then best fit the points to the CAD 4 If you are measuring a turned part it is possible to alignment the part using just 2 geometric features 4 1 Aligning using Geometric Features To align the component to the CAD Model using geometric features you must first select a minimum of three features which will fully define the position and orientation of the component Typically these will be a plane a lin
14. c Features from the CAD Model If you change your mind about which features should be linked to the CAD Model simply recall a previously linked unit and click on the Link to CAD button again The following prompt will appear Aberlink 3D Software E X This Feature is already linked to the CAD model Unilink iE If you click Yes this feature will no longer be linked to the CAD Model Be aware that unlinking a feature may break the alignment between the component being measured and the CAD Model so that measurements can no longer be taken relative to the CAD Model 4 2 Aligning without using Geometric Features Some components may simply not contain any geometric shapes that can be used for alignment to the CAD Model or maybe the CAD Model has been drawn as Spline Curves rather than geometric shapes In this case it is possible to select 6 or more points on the component firstly measuring them on the component and then clicking on the CAD Model to show their approximate position on the Model The software will then do a best fit through these points in order to produce an alignment between the component and the CAD Model In order to do a six point or more alignment open a Curve Measure Window Curve Measure a 3 x es 1 Section Nol 2 Points Taken Curve Point Position D Points Fit i Datum P 1 emm Retake Clear Delete Plane Construct ost Ref
15. component and their error from the CAD model reported After the initial alignment of the component it is also possible to perform a Best Fit function to re align the component through subsequent measurement points that have taken Reports can be produced to include any of the graphical views created or as a tabulated report giving X Y Z values for each point taken together the closest point on the model s surface and corresponding errors or as a combination of both All of this functionality is provided in addition to the geometric measurement functionality available within the standard Aberlink 3D software Please note that the CAD Comparison module will only work with Aberlink 3D software version 3 and later and that version 3 is not backwards compatible with earlier released versions 2 0 IMPORTING THE CAD MODEL Click on the Import Data from CAD button to import the CAD Model of the component being measured This can be done at any time either at the start of a new inspection or after having measured geometric features on the component in the usual way This will allow you to browse to the file 2 xl Look in t ex sies Is Lang Block STEP 2 700 2 24729 000 igs History 2BlocksCut STEP 5 A a 3WO_199_521_D step sample igs 14 Block IGS aj sample stp Desktop a Block STEP e Test Block rotated shifted IGS on bracket F
16. corresponding CAD X Y and Z co ordinates are now also filled into the table Repeat the process perhaps the first 3 points could define the approximate position in the Z axis and rotation about the X and Y axes equivalent to measuring a plane m And then maybe the next 2 points could define the position in the Y axis and rotation about the Z axis equivalent to measuring a line u 27 And then the sixth point should be selected to define position in the X axis After the sixth point has been taken the prompt at the top of the alignment window will give the option of taking a seventh point or alternatively to click OK in order to start a best fit alignment through the points already measured Points Takon Curse Passt Position mept n gt lt Hr Sco nf Rete Clear Delete Fiane Construct Set Ret 3 nU ve Bl Colour E java eC da rO CAE 6 amp f ub ex Point Abysment A Mensure port on test prece or press OK to 6 complete ai gnment ony 3 T P 1 296633 385153 455073 BIN 1237 9174 3 27563 83619 455149 12279 11027 10419 3 287312 40544 4EbJM 1029 1045 834 4 207 120 41533 47 14253 1850 474 5 257119 41332 472795 195 18000 5121 331 150 397993 458953 4293 3073 415 A E Qe 4 5 X 332 003mm 4 gt of Y
17. d tu Ok E 25 Now click on the Link to CAD button E When you try to link a new Curve Measure Window ie with no measurement points taken to CAD the software realises that a six or more point alignment is to be performed and opens the following window Six Point Alignment point an test piece You must now measure a minimum of six points on the component which should define the position and alignment of the component in space in all six degrees of freedom as discussed when using geometric features to align in section 4 1 above Prompts appear at the top of the window describing what to do Firstly measure a point on the component The CMM X Y and Z values for this point will be added into the table as follows Six Point Alignment X corresponding point an model O 311 575 3592 190 466 675 The prompt now tells you to click on the corresponding point on the CAD Model When you do this a yellow dot will appear on the model marking the position 26 sif cam Cie De Plane Sot Re li prm ix Frint E a DAE eic amp E Fus ure point nn besi piece E du gg ds pes X 311 512mm Y 352 154mm Z 461 304mm CETT Sidus CC reai es o can nies Paint Sec Paint md arcs 121 eing GUE pE PARR E e 287 VBE E Note that the
18. e and a circle or possible a plane and two circles or a plane and two perpendicular lines There are no firm rules as to what combination of features must be used to align the component and the user can continue to link measured features to the CAD Model until prompted by the software that the alignment is complete A complete alignment will define all 6 degrees of freedom for the component namely position in X Y and Z and also rotation about X rotation about Y and rotation about Z As an example we will take the following component 19 3 Or alternatively one of these holes could be used to define rotation about the Z axis in conjunction with the first hole used both the X and Y axes Im X axis and Y axis Z axis X By measuring the plane on the top face and linking it to the CAD Model this will define the position of the component in the Z axis and also its rotation about the X and Y axes ie this will define 3 out of the 6 degrees of freedom Next if you measure one of the holes in the top face and link it to the CAD Model this will define its position in both the X and Y axes This is a further 2 degrees of freedom defined total 5 now the only thing left to define will be its rotation about the Z axis Rotation about the Z axis can be defined either by measuring one of the other holes in the top face or alternatively one of the straight edges as a line This will complete the alignment to the C
19. n as bright red and anything in tolerance is show as a rainbow of colours between blue amp red 3 13 4 Display probe button E This button displays the probe position in the CAD window A 1 3 13 5 Toggle between point boxes and tails a This button allows you to toggle between points with boxes and points with tails 16 Points with boxes 506 0 023 SOF 0 065 502 0 044 Points with tails 3 14 Transparency slider amp line thickness buttons Using this slider it is possible to make the part see through this is useful when viewing points in tails mode that are lying below the surface of the model see above 17 RMS Error 0 062 3 15 Best Fit button The RMS Error box displays the Root Mean Square Error The RMS figure is calculated from the square root of the sum of the errors from all the point take the better the best fit the lower the RMS It is possible to redo a best fit alignment by click on the best fit button this will open the best fit window _ CAD Best Fit These tick boxes allow to limit the degrees of freedom when x Translation best fitting a part to CAD Translation Translation Z Rotation Fix Points to Current Surfaces move across the part on to other surface when doing a T E best fit This tick box tells the software to ignore the links to any geometric features used to align the p
20. rance 2 Use Bands Eeztare Defaults Above 3 Error colour coding using fixed bands Link w m 1 tol 2 o f Use Shades 4 Rainbow error colour coding Dark blue 1 tolerance under size Bright red 1 tolerance over size 1 tal This window allows you to change the tolerance the magnification of the tails and the colour of the points and boxes 3 13 1 Error scale slider This slider increases or decreases the magnification of the tails showing the direction of the error 15 3 13 2 Tolerance Box You can change the tolerance by entering a new tolerance in this box Error colour coding using fixed bands You can display how far the points are deviating from the CAD normal using customize colour bands By left hand click on the line between the bands you can increases or decreases the tolerance band Click on the Apply button when have finished to set the bands If you want to re set the bands Click on the Restore Defaults Use Bands Apply Restore Defaultz J Above a _ _ Link p acies mm 73 If you click the small boxes above the band its possible to change the bands colour 3 13 3 Ra nbow shaded colour coding you can display how far the points are deviating from the CAD normal using colour shading anything over 1 tolerance is show as dark blue anything under 1 tolerance is show
21. tion This option filters out all the unnecessary layers dimension wires just leaving the surface Click OK The CAD Model will then be brought into the Aberlink 3D software in an additional floating window as follows Probe Head 79 241 Y 138 855 7 200 000 Controler Status Aberlink 30 0 AO BO amp 1 C1 R 1 Machine State 14 36 E lli 30 Software 3D CAD View So Gill s e A 14 6 Please note that if the CAD file is large this may take several tens of seconds to import which is also dependant on the speed of computer being used 3 0 THE CAD MODEL WINDOW VQ 90 GO 3 1 The Select Tool A 1 This tool can be used for selecting features on the solid model The feature selected will become highlighted and information about that feature displayed below the graphic i D qa SAO ga eftedesieaoo s Colour of the model the Selected feature is background and selected highlighted in a features can be selected different colour here Description of 14 252 16 681 0 000 Face plane normal 0 000 0 000 1 000 selected feature Tu The selection tool must also be used when linking geometric features to the CAD model this is discussed later under Aligning the CAD Model 3 2 The Rotate Tool 2 The rotate tool can be used to rotate the CAD Model within the CAD Model window Simply click on
22. ull stp Test Block rotated shifted STEP beag Front 5 ise Test Block rotated STEP lofty STEP My Documents My Comput H AMET File name w Files of type Model Files step iges Cancel My Network P Open as read only 2 Select the model which must be either an IGES or a STEP file The following window will then open allowing the model to be scaled into millimetres if for some reason it has been created in other units for instance inches or metres Confirm CAD Model Load If the CAD is in metric and to wish to measure in imperial it File EXCADATest Block rotated STEP is possible to scale the ES imported CAD model by clicking here f Normal 1 1 C Imperial Measure 1 25 4 On large CAD models its possible cC Custom 1 000 to reduce the time it takes to load the model by ticking Use selection filter Use selection filter This filter filters out any unnecessary layers from the CAD model leaving just the surfaces Cancel Note that an option is available to scale the model by 25 4 to 1 if it has been created in inches or any other factor if different units have been used By default a 1 to 1 scale is selected which assumes that the model has been created in millimetres 2 1 Use selection filter Large CAD files can take a long time to load you can reduce the time it takes to load the file by click the Use selection filter op
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