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GEOTOL help

management had me run a test. I taped a 2,4,6 block to the table. took the top plane, x+ and y- and created my alignment. I then called them datum a top b x and c y. I measured 2 holes on each side and did a position in geotol. I used the same measured data in legacy and got a .010 difference. How can this be?

What management is saying is the position formula. 2 x (dx^2 + dy^2)^1/2 when you figure it manually using the measured values matches legacy perfectly but it is not matching in GEOTOL.

I understand this is rough and dirty test but I can not explain why parts we measure good with second methods and legacy are good. GEOTOL (which our customer uses and requires) is failing the part. I have asked Hexagon this question and keep being told that GEOTOL is correct to the standard. Which is great but the standard use the 2 x (dx^2 + dy^2)^1/2 formula and is passing this but failing in GEOTOL.

I am not bashing PCD Hexagon or anything but I can not explain it to management.

What am I missing??​
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  • Why can't you post code? I'm sure that would help a lot in figuring out the solution. Just because something has been measured a certain way for 100 years, doesn't make it the best way. Or the right way. Machinists are hard headed. I tell my machinists that my cmm is calibrated every year and then ask them when the last time their machine was calibrated. Wink fighting over .0005" sure. But over .001", i would be asking questions as well. You should be able to come close to what they are measuring if everyone is indeed measuring it correctly.
  • Doesn't sound like you are getting much of a vacation. LOL. Hope it gets better.
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