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Manual alignment not "snapping" to cad geometry

JTM@AlloyP
Hello all,

I am hitting a major block in my programing for a cylindrical part.

After importing the CAD model and establishing an alignment, my trihedron is right where I want it. using a top plane to level the part and establish translation in Z, an I.D. bore which is datum B measured as a cylinder for translation in X and Y, and two side holes 180 degrees measuring as circles and constructing a cylinder to use as my rotating feature in the hopes that will clock the part during the program in case operators put the part in slightly off .

Unfortunately, after testing out my manual alignment everything looks good except the I.D. cylinder doesn't snap correctly to the CAD model and it looks like it is on an angle.

I know that isn't to much to go on but I am completely unsure of what I may be doing wrong. If possible, please help
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  • Did you switch to probe mode when programming and click the model (all in off-line) to get where the (approximate) hits would be off the CMM during on-line manual?

    Or, if you have sufficient features for it to work, did you do CAD=Part?

    If you do neither, the software has no way to "KNOW" that you meant it to be the cad.

    Unless you put the model in model coordinates at -14.653, -4.362, -8.932 and then placed that part EXACTLY in those coordinates on the machine, you didn't actually MEASURE points where the model "IS" electronically.

    You have to be off-line, in probe mode, and click the surfaces then hit end (3-4 hits for a plane, end / 3-4 hits for a diameter, end / etc.) so it knows you mean it to be there.

    Or you can measure and then translate the model (Operation -> Graphic Display Window -> Transform) to match what you measured. You're going to get a pop-up saying the program won't move, just the cad. Because, the CAD isn't strictly, explicitly, tied to the program, which is why you have to make it match somehow.
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  • Did you switch to probe mode when programming and click the model (all in off-line) to get where the (approximate) hits would be off the CMM during on-line manual?

    Or, if you have sufficient features for it to work, did you do CAD=Part?

    If you do neither, the software has no way to "KNOW" that you meant it to be the cad.

    Unless you put the model in model coordinates at -14.653, -4.362, -8.932 and then placed that part EXACTLY in those coordinates on the machine, you didn't actually MEASURE points where the model "IS" electronically.

    You have to be off-line, in probe mode, and click the surfaces then hit end (3-4 hits for a plane, end / 3-4 hits for a diameter, end / etc.) so it knows you mean it to be there.

    Or you can measure and then translate the model (Operation -> Graphic Display Window -> Transform) to match what you measured. You're going to get a pop-up saying the program won't move, just the cad. Because, the CAD isn't strictly, explicitly, tied to the program, which is why you have to make it match somehow.
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