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Setting Position Tolerances

Setting Position Tolerances

(OP)
So I've been searching for material to help me set tolerances for mating surfaces. Everything I have found only applies to one bolt, kind of like the attached file. My question is does anyone have any recommendations on how they go about setting tolerances for a pattern of holes and bolts, so that at as a dimension leaves or approaches (M) it will all still mate. http://files.engineering.com/getfile.aspx?folder=2...

RE: Setting Position Tolerances

The tolerances apply based on the parts being aligned to each other by their respective datum reference frames. Since the holes in the pattern share a datum reference frame they will all go together as a group. Whatever applies to one hole will apply to all of them.

RE: Setting Position Tolerances

Of note: The examples usually divide the total available position tolerance (difference in MMC sizes) equally (by 2) between the faster and hole. This is NOT a requirement. You can assign any values to each as long as the total equal what is available.

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