I have an old drawing with datum modifiers, can I add bonus tolerance from the datums modifiers and not check them simultaneously?
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I have an old drawing with datum modifiers, can I add bonus tolerance from the datums modifiers and not check them simultaneously?
What version of PC-DMIS do you have? You should be able to do that using GeoTol.
I have 2019 I know how to do it, what I want to know is do I have to do it with an old drawing before 2009?
I believe it has been a part of the standard since its inception, but most likely has been refined over the years.
MMB is Datum shift not bonus position tolerance.
MMC on the tolerance gives bonus for each hole based on hole size.
MMB on the datum lets you shift entire hole pattern based on datum size.
Simultaneous evaluation has been a relevant (implied) factor of ASME for many revisions, but I think it first showed up with its own paragraph/section in 1994:
1994 it's para 4.5.12
In 2009 it is in para 4.19
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