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Alignment Question

Lukas
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.
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  • The 'quick' menu alignment ASSUMES that your part isn't even close to being flat or square to the machine, with the FLAT being the big issue.

    IF your part is flat on the machine and the plane you measure is flat to the machine, then there is no real reason to use it's method of multiple alignments.

    IF your part is NOT flat to the machine, or the level (plane) feature is on the side of the part, not on the flat table, then the level & origin is 'required' so that any 2D features are measured & probe comped correctly.

    As for translating (do you mean origin offset?) before rotating, the translate is done to the CURRENTLY aligned part, if all you have done is a level, then the translations will be done to MACHINE axis, and not your rotation axis.

    So, level, then rotate, then origin, then translate (origin offset), always in that order.
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  • The 'quick' menu alignment ASSUMES that your part isn't even close to being flat or square to the machine, with the FLAT being the big issue.

    IF your part is flat on the machine and the plane you measure is flat to the machine, then there is no real reason to use it's method of multiple alignments.

    IF your part is NOT flat to the machine, or the level (plane) feature is on the side of the part, not on the flat table, then the level & origin is 'required' so that any 2D features are measured & probe comped correctly.

    As for translating (do you mean origin offset?) before rotating, the translate is done to the CURRENTLY aligned part, if all you have done is a level, then the translations will be done to MACHINE axis, and not your rotation axis.

    So, level, then rotate, then origin, then translate (origin offset), always in that order.
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