Mike Ruff
Senior Member
Last Activity: Today, 05:20 PM
Joined: 01-28-2010
Location: San Diego, CA
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A cylinder locks down 4 degrees of freedom, not three. Two rotations and 2 translations -
In the example you posted, the section for "On a surface" is showing datum A as a flat surface, not a cylinder. This is confirmed by there not... -
Try importing a different step into this program and see if it stays in there. Also try importing this step file into a junk program and see if it stays... -
Maybe your lines are constructed in the wrong workplane? Or maybe you are using 3D lines that should be 2D lines constructed in the correct workplane?...Leave a comment:
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Dang, I didn't realize I didn't mention you need to redefine the clearplane after the alignment 
I must need more coffee
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If you create a plane on the surface you want it to be normal to and level to it, it will rotate your coordinate system to match and then your clearplane...Leave a comment:
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How small is a "small deviation"? Does your alignment lock down all six degrees of freedom? Does your alignment have on offset on the rotat...Leave a comment:
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Also are you using XactMeasure? If you are, have you tried deleting and recreating the dimension? Sometimes XactMeasure dimensions get corrupted. Also,...Leave a comment:
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Use the shank to rotate to X about Z, Rotate to X about Y, and Y-zero and Z-zero. measure Y and Z relative to the shank on the first sphere with callout...Last edited by Mike Ruff; 10-02-2018, 12:44 PM. Reason: Rotate was labeled wrong, and cleaned up wording slightlyLeave a comment:
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Your alignment can also cause small deviations on a perfectly square CAD file. For example, if you rotate to 2 holes and offset the angle by 43°, but...Leave a comment:
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View > Toolbars will show you all of the different toolbars you can use. I would recommend having the "Window Layouts" toolbar. You can use...Leave a comment:
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I think Blue Label. If it costs more, it must be more accurate, right? -
Yeah... Restarting the demon fixes a lot of issues with PC-DMIS. The software is not exactly stable, and you will begin to notice when it isn't behaving...
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