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Profile of a Surface

RyanCarr
Having problems tolerancing profile of a surface

Using 2009 MR1
Tolerancing with Xactmeasure

See attachment to see callout (dim 5)

I measure two cylinders (one for each Radius R10 & R15)

I get a couple of problems during tolerancing.

1. When I try to apply the modifier to Datum C, the software tells me "encountered an improper argument" (Do I not get bonus on this Datum because of the Bonus of Datum B)

2. When I disregard the MMC on Datum C, I select both cylinders and it forms a feature set, however, i only get two points for my text analysis, and it is reporting the deviation of my Z axis deviation.

Datum A on the CMM is Z+


Parents
  • PC-DMIS is correct. You can not have a virtual condition on datums (the MMC behind the B and C) if you call for surface profile. See the standard. What is datum B???

    I thought the modifier wasn't allowed on the feature itself, but allowable on the Datums. This would be applicable for a Datum shift... I sought out the standard and if i read it correctly, i thought it says i could (on at least Datum B).

    Datum B is the other through hole. Sorry i cut that out by accident.
Reply
  • PC-DMIS is correct. You can not have a virtual condition on datums (the MMC behind the B and C) if you call for surface profile. See the standard. What is datum B???

    I thought the modifier wasn't allowed on the feature itself, but allowable on the Datums. This would be applicable for a Datum shift... I sought out the standard and if i read it correctly, i thought it says i could (on at least Datum B).

    Datum B is the other through hole. Sorry i cut that out by accident.
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