GD&T Help
GD&T Help
(OP)
I would like to get comments on the attached sketch.
1. Are the GD&T tolerances done correctly?
2. Does the parallel .005 to B do anything or could it be left out with no change to the tolerance?
Any help/suggestions will be greatly appreciated.
Thanks,
Chuck
1. Are the GD&T tolerances done correctly?
2. Does the parallel .005 to B do anything or could it be left out with no change to the tolerance?
Any help/suggestions will be greatly appreciated.
Thanks,
Chuck





RE: GD&T Help
RE: GD&T Help
Chuck
RE: GD&T Help
Chuck
RE: GD&T Help
Powerhound, GDTP T-0419
Engineering Technician
Inventor 2010
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RE: GD&T Help
I agree. I could also use a positional tolerance. I was trying to avoid giving up the .50 +/-.01 tolerance.
Thanks,
Chuck
RE: GD&T Help
The tolerance for a distance of flat surface from axis B is .02 while both orientation tolerances are .005, so (assuming there is a reason for it) it would be logical to apply composite profile tolerance to that flat surface and attach the datum identifier C to composite FCF. Both segments would refer to A|B datums (which may look weird, but IMO is absolutely legal).
Additional 2 comments:
1. There is no size dimension and GD&T applied to the center hole with the flat.
2. If you are working according to ASME Y14.5 std., positional tolerance is not allowed for planar surfaces - profile is the one you should choose. In ISO 1101 world you can use position.
RE: GD&T Help
Thank you,
Chuck