I have a bore that is Datum B. It has a perpendicularity callout to Datum A, which is a flat surface. So, I have to measure it as a cylinder. I have another bore that has a circular runout callout to AB. So do I have to measure B again as a circle? Because I would have to assign that as another datum to build the feature control frame. But if I just use B as a cylinder, then wouldn't it be measuring total runout and give me a different result than circular runout?
Notes:
- datum feature B (cylinder) and the toleranced feature (cylinder) must be measured perpendicular to their respective centerlines
- measure the toleranced feature using the concentric circles strategy to be sure that the measure strategy does not conflict with the tolerance evaluation (helical strategy/cylinder lines should not be used here)
- depending on the strategy used and the evaluation type (legacy/Xact/GeoTol), the result you get could be total runout
Notes:
- datum feature B (cylinder) and the toleranced feature (cylinder) must be measured perpendicular to their respective centerlines
- measure the toleranced feature using the concentric circles strategy to be sure that the measure strategy does not conflict with the tolerance evaluation (helical strategy/cylinder lines should not be used here)
- depending on the strategy used and the evaluation type (legacy/Xact/GeoTol), the result you get could be total runout
