co-axial features
co-axial features
(OP)
Re: Fig. 4-24 in ASME Y14.5-2009, and Fig. 4-19 in ASME Y14.5M-1994. Did they put positional tolerancing without a datum back in the standard when I wasn't looking?
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RE: co-axial features
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?
RE: co-axial features
If two coaxial features are the same size and called out together, then it's legal to use the position symbol without a datum. In a sense, each end of the part creates a datum for the other, ensuring coaxial alignment.
I think this has always been OK, but it's a special case of two or more features that are the same size and are to be coaxial.
John-Paul Belanger
Certified Sr. GD&T Professional
Geometric Learning Systems
RE: co-axial features
Season
RE: co-axial features
RE: co-axial features
John-Paul Belanger
Certified Sr. GD&T Professional
Geometric Learning Systems