2023.1--Selecting Datum A as a plane; Datum B as a hole, Datum C as a hole.
"GEOMAJIC" States Datum C doesn't control any degree of freedom
Without Datum C, Datum B doesn't constrain the final degree of rotational freedom.
Am I wrong here?
Yes - iterative align, A1,A2,A3 Level, B&C rotate, B origin.
Then construct alignment planes (and or lines/points - doesn't really matter as they're perfect features based on the current alignment which is created from the iterative alignment).
Define those as datums in GeoTol.
Actually, that composite control frame looks a bit suss, ABC is fine, but in ASME the lower segment of a composite only controls orientation so I'm not sure what B is meant to do (in the lower segment).
I'd assume it's meant to be two single segment control frames, but I'd seek clarification.
Yes - iterative align, A1,A2,A3 Level, B&C rotate, B origin.
Then construct alignment planes (and or lines/points - doesn't really matter as they're perfect features based on the current alignment which is created from the iterative alignment).
Define those as datums in GeoTol.
Actually, that composite control frame looks a bit suss, ABC is fine, but in ASME the lower segment of a composite only controls orientation so I'm not sure what B is meant to do (in the lower segment).
I'd assume it's meant to be two single segment control frames, but I'd seek clarification.
