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Datum Shifting
Running version 4.1, Does PCDMIS perform Datum Shifting accurately? Detailed answer from tech support would be greatly appreciated.
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That might require a phone call. Wes, you got that number handy??Originally posted by BRSMR View Post -
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Yeah, well I do have the phone number but. . . A couple of years ago when I moved up to 3.7MR2 and was having some obnoxious problems with true position I was put in touch with a fellow who is supposed to be the B&S GD&T expert. I tried to get an answer to the very question you are asking. I was told that the math pc-dmis uses comes from the ASME Y14.5.1M-1994 - Mathematical Definition of Dimensioning and Tolerancing Principles. I have a copy of that book and the math gets quite hairy. As I have demonstrated several times, I still have a long way to go mastering the basic standard before I dare tackle this one. HTHsigpic"Hated by Many, Loved by Few" _ A.B. - Stone brewery
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BRSMR,
Just to make sure I understand what you are asking, are you doing shift pattern of holes? Shifting your entire pattern around? I used to do this in excel a lot years ago. I transferr all my data to excel and moved the entire pattern at once to see if it would work. I never could get the software to work correctly but that was many versions back. If you need any help PM me.Dale
v2011 MR1 CAD ++Comment
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Can you give us your exact example and please tell us why you think it does not properly shift.
I think it does. I tried some known data sets and it did it correctly. But I must admit that sometimes datashifts can be surprisingly large!
Jan***************************
PC-DMIS/NC 2010MR3; 15 December 2010; running on 18 machine tools.
Romer Infinite; PC-DMIS 2010 MR3; 15 December 2010.Comment
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I dont have any way to scan so I will try to make this clear as possible. In my Y- axis Datum A (front face) Datum C ( large bore in center) datum D...02-07-2012, 09:57 AM
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I'm no expert in GD&T, and I'd wager that my 'engineers' are not experts either.
Take a look at the attached file.
...10-21-2009, 04:02 PM -
Please help me.
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Centerline of a shaft hole = B
Centerline of the...02-01-2008, 11:14 AM
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