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Alignment Question

Hello. I am trying to better understand how alignments work. For example the advantages of doing multiple alignments vs one single alignment, rotating before translating, etc.

If you don't rotate before you translate, then what XY values does the software use for translation? Does it take the XY values from the alignment the feature was measured in?

Sorry, this question is a bit hard to convey. See, a while back I had a program that gave me different profile results if I translated before I rotated and I'm trying to understand the theory of why.
Parents
  • Level and rotate sets the AXES that you will translate in.

    If you wanted a table and only said it must be 36" above the ground, (in CMM terms) there is a point in the middle of the table that is the centroid, and it needs to be 36" above the ground. So I could put two 40" legs and two 32" legs, and the centroid would be 36" above the ground. Everything on the table would roll right off, because the top would be tilted like crazy.

    Now, if I was forced to LEVEL the table top first, then all the legs would need to be 36" and the top would be parallel.

    You have to set the axis of motion before applying the motion.
Reply
  • Level and rotate sets the AXES that you will translate in.

    If you wanted a table and only said it must be 36" above the ground, (in CMM terms) there is a point in the middle of the table that is the centroid, and it needs to be 36" above the ground. So I could put two 40" legs and two 32" legs, and the centroid would be 36" above the ground. Everything on the table would roll right off, because the top would be tilted like crazy.

    Now, if I was forced to LEVEL the table top first, then all the legs would need to be 36" and the top would be parallel.

    You have to set the axis of motion before applying the motion.
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