Cylindrical Tolerance Zone
Cylindrical Tolerance Zone
(OP)
A customer has submitted numerous drawings where ASME Y14.5M-1994 is referenced. They use the Ø symbol for a cylindrical tolerance where a plane feature being controlled. I would like to know if the Ø symbol appropriate. Example:
Perpendicular | Ø .005 |A
Datum A is a cylindrical feature, but the feature being controlled is a plane surface.
Thanks,
Chuck
Perpendicular | Ø .005 |A
Datum A is a cylindrical feature, but the feature being controlled is a plane surface.
Thanks,
Chuck





RE: Cylindrical Tolerance Zone
John-Paul Belanger
Certified Sr. GD&T Professional
Geometric Learning Systems
RE: Cylindrical Tolerance Zone
Your example of perpendicularity with a diametrical tolerance zone is appropriate if the feature is a round hole or pin. If the feature is not round, it shouldn't be used since one would lose orientation.
I would suggest contacting your Customer and ask a few questions playing dumb. Try to get their requirement needs and then applying it to a marked up drawing.
Dave D.
www.qmsi.ca
RE: Cylindrical Tolerance Zone
Chuck