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Difficult alignment help needed

Clementine
I orginally posted these questions on the CMM forum instead of the portable forum.
Mdobb829 gave me good advice for the CMM however I could not use it, when I tried to follow steps.
Need more help. I added a picture of how the part is set up on table.

Below is how the parts is aligned but actuals do not look right. Something is wrong. If possible, please explain why this alignment is not working. Would creating a point at the intersection of B and A be helpful with this alignment? Using that point as the origin for XY? Then off set Z in -2.63?

Level: B = Z plus

Rotate: C = Y plus

Origins:
X: A

Y: A

Z: B



Thank you for your help
Clementine
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  • DRF is CBA. Why level to A?

    Eh, I said to Level to A, assuming that A is primary, B is second, C is tertiary. You seem to be saying that the true position's datum reference frame indicates otherwise. I guess we'd have to talk to the drawing author to really know.

    At any rate, once the alignment is created, and the inspector shoots the circle and builds a true position FCF...as long as he builds it correctly, the DRF will be CBA regardless of the alignment.

    It's a good discussion, but a moot issue for the true position (as long as he uses the FCF and not legacy TP).
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  • DRF is CBA. Why level to A?

    Eh, I said to Level to A, assuming that A is primary, B is second, C is tertiary. You seem to be saying that the true position's datum reference frame indicates otherwise. I guess we'd have to talk to the drawing author to really know.

    At any rate, once the alignment is created, and the inspector shoots the circle and builds a true position FCF...as long as he builds it correctly, the DRF will be CBA regardless of the alignment.

    It's a good discussion, but a moot issue for the true position (as long as he uses the FCF and not legacy TP).
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