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MMC Bonus calculation with datum
- Thread starter Joe Chen
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3DDave (Aerospace)25 Mar 24 02:30
Variations in datum feature references do not allow extra variation in the location of the referencing feature relative to the datum reference frame.
Size-related modifiers applied to datum features allow for variation in the datum features to potentially allow the part to shift relative to the datum reference frame in a way to accept the referencing feature(s.)
Wuzhee (Automotive)25 Mar 24 12:41
(M) behind the numerical value = Bonus tolerance
(M) behind Datum Feature Symbol = possible datum shift.
"Stop treating datum shift as bonus tolerance" - some TecEase guy cca 13 years ago.
Variations in datum feature references do not allow extra variation in the location of the referencing feature relative to the datum reference frame.
Size-related modifiers applied to datum features allow for variation in the datum features to potentially allow the part to shift relative to the datum reference frame in a way to accept the referencing feature(s.)
Wuzhee (Automotive)25 Mar 24 12:41
(M) behind the numerical value = Bonus tolerance
(M) behind Datum Feature Symbol = possible datum shift.
"Stop treating datum shift as bonus tolerance" - some TecEase guy cca 13 years ago.
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