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Tooling pins are usually accurately dimensioned. Therefore, IMHO, you
would want your tooling hole
as large as, but never smaller than, the pin itself. In my personal
experience we have called out a
+.003/-.000 in. hole so it would always drop down on the pins without
needing any extra force.
There are also those situations where the pins are fully tapered. In
those cases, it doesn't make much
difference how the holes are toleranced as long as they do not get to be
larger that the fattest portion
of the pins.
Hope this helps.
Do any know witch is the tolerance for a tooling hole (for PCB/fixture
alignment)?
+0.003/-0.000in or +0.002/-0.001in.
Thanks
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