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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 :/
Parents
  • Two questions:
    Did you verify that your CMM program was outputting good numbers by checking some dimensions through other inspection means?
    Are all three of you using the exact same program?

    If yes and yes...and if 2 out of 3 are saying its good, and the 1 saying they are having issues hasn't been calibrated in 5 years...... then I think we have found our issue.

    To 's point....I hate horizontal CMMs due to the exact issues he has laid out. There is a fine science that must be learned & applied in order to measure properly and accurately.
  • in reply to DAN_M
    We use a 3rd party company that makes up their own program, chooses their own points and all that jazz. The 3rd party company verified that the fixture was good to the nominal that they picked.

    We don't use the same program. They sent me their nominals though. I brought them into our original program and snapped them to our CAD surfaces and they worked... So their program is good, even though it isn't the exact same points as the points we picked.

    It's just awkward because it's a big customer and we have to be like: "Hey budz, it's effed on your end, not ours".... and they insist that their all good there....



    So why would anyone opt to use a horizontal machine? What are the benefits of having one of those??
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  • in reply to DAN_M
    We use a 3rd party company that makes up their own program, chooses their own points and all that jazz. The 3rd party company verified that the fixture was good to the nominal that they picked.

    We don't use the same program. They sent me their nominals though. I brought them into our original program and snapped them to our CAD surfaces and they worked... So their program is good, even though it isn't the exact same points as the points we picked.

    It's just awkward because it's a big customer and we have to be like: "Hey budz, it's effed on your end, not ours".... and they insist that their all good there....



    So why would anyone opt to use a horizontal machine? What are the benefits of having one of those??
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