Horizontal CMM Experience? Looking for info...

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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DAN_M over 7 years ago

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 Milicron Mike '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.
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Mystic_Muffin over 7 years ago in reply to DAN_M

DAN_M My knowledge of CMM outside my little bubble is so limited. I'd love to learn more about Aerospace work one day. I kinda thought that was the highest skill point in this field, was I wrong?

I'll do a full study on the ball bar and see what happens. I just don't get why they're being so stubborn. Everyone else I've dealt with running CMMs has been so cool and helpful, like we're on the same team...

I think a big part of it is we're a relatively young company and I'm a young programmer/Figure-***-out-guy and they're trying to jostle for pricing or something? They're a big company though so I would hope they'd be more credible than that.

Of course when the customer questions our results the owners start questioning me and I just end up confused because I know our numbers are good.

Thanks for making me feel better
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Mystic_Muffin over 7 years ago in reply to DAN_M

DAN_M My knowledge of CMM outside my little bubble is so limited. I'd love to learn more about Aerospace work one day. I kinda thought that was the highest skill point in this field, was I wrong?

I'll do a full study on the ball bar and see what happens. I just don't get why they're being so stubborn. Everyone else I've dealt with running CMMs has been so cool and helpful, like we're on the same team...

I think a big part of it is we're a relatively young company and I'm a young programmer/Figure-***-out-guy and they're trying to jostle for pricing or something? They're a big company though so I would hope they'd be more credible than that.

Of course when the customer questions our results the owners start questioning me and I just end up confused because I know our numbers are good.

Thanks for making me feel better
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