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problem with fixture plate

Hello everybody

So we have this fixture plate on our cmm with some pins on it.
and all parts we measure are put in a fixture and slided against the pins, so no manual alignment requierment.

problem is that every year when hex comes to calibrate our CMM, he has to take off the fixtureplate
and when he puts it on again, the plate is in a slight different position.

This kinda screws up for alot of our parts because we have to run the manual alignment again.

Has anyone any idea for either
1. A good setup for the plate so its precicily in the same position everytime we remove it and put i back. (Currenctly we put it with 3 bolts in the graphite plate)

or
2. Work with a zero point system so that we align on our fixture plate and all other manual alignments are based on that. so if we remove /put back our fixture plate all we have to do is do a 3/2/1 alignment on fixtureplate. (instead of running manual alignment on every part)

ty guys!
Parents
  • We have 2 external alignment programs for our part fixtures. The first one is measured manually. Then the second one is an iterative DCC alignment that references the manual alignment. I make the prehits and retracts larger to account for slight variations in the position of the fixtures. Then, the actual part programs reference the DCC alignment. As long as the fixtures have only moved a little, the second alignment can “find” them and we’re good to go. I remove and reinstall our fixtures all the time and I never have to rerun the manual alignment.
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  • We have 2 external alignment programs for our part fixtures. The first one is measured manually. Then the second one is an iterative DCC alignment that references the manual alignment. I make the prehits and retracts larger to account for slight variations in the position of the fixtures. Then, the actual part programs reference the DCC alignment. As long as the fixtures have only moved a little, the second alignment can “find” them and we’re good to go. I remove and reinstall our fixtures all the time and I never have to rerun the manual alignment.
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