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Positional Tolerance on Common Axis
Hi All,
A quick question on simplifying a drawing I've picked up for checking.
See attached concerning a counter-bore thru hole. My view is that I can replace all of that with a single positional tolerance of a common axis, much like ASME 2009 Fig: 7-24.
I simply want to ensure the co-axial holes align and are perpendicular to the back face. Datum A is the back face but its not shown in the image - again it would be the same as ASME 2009 Fig: 7-24.
I feel I might get some resistance as my company seem to enjoy adding concentric and circularity requirements to holes. My view is that is adds to inspection costs and doesn't add much, if any functional value to the part.
What do you guys think?
Thanks.
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