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Horizontal CMM Experience? Looking for info...

Mystic_Muffin
Anyone have experience running a horizontal CMM?

We have a customer that's run one of our fixtures and it checked good here and at 3rd party, but they're getting a bunch of Z axis points out.

I know their machine hasn't been calibrated in 5 years, but are there any horizontal CMM quirks that cause sagging in the Z or anything? I know nothing about horizontal setups... The deviation is around .15 in the center and around .35 down the X.... again, only points primarily with a Z approach.

Thanks for the insight.... I'm confused :/
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  • As the arm extends further out from the mast, the more "droop" that you get and that is 100% Z axis error. If it hasn't been calibrated in 5 years then they're wasting their time. More than any other machine the horizontal arms need to have a current table comp map because gravity acts on the arm so heavily the further you extend it out. Oh, yeah, I've some experience with a horizontal arm CMMs; I'll never go back to another.

    Mike
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  • As the arm extends further out from the mast, the more "droop" that you get and that is 100% Z axis error. If it hasn't been calibrated in 5 years then they're wasting their time. More than any other machine the horizontal arms need to have a current table comp map because gravity acts on the arm so heavily the further you extend it out. Oh, yeah, I've some experience with a horizontal arm CMMs; I'll never go back to another.

    Mike
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