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.
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. 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.
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. 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.
I agree however that 100 year is a lot of proof the part is good. Nawwwww not hard headed at all!! I agree and i do every time with legacy but not with geotol.
That is the big question is how/ why is geotol different. my programing has not changed but the software has. I am sure it has to do with how things are now calculated. LS vs default vs min/max. I have never changed anything. I use auto feature and do not use any advanced measuments. never have. What the softwear does is what it does. I do not believe there is reason to get all technical in measurments. our parts are simple. we need x,y,z and hole positions.