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Composite or two single segments can be used with bidirectional tolerancing? 1

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greenimi

Mechanical
Joined
Nov 30, 2011
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2,431
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Simple shaft with it's diameter datum feature A
Two thru holes positioned basic from each end of the shaft
Left hole (West) basic from datum B = flat end of the shaft)
Right hole (East) basic from datum C = the opposite flat end of the shaft)
Basic zero implied from datum feature A (not shown)
No basic dimension between the holes.
Requirements: holes position can be as much as .005 in North-South direction, but can very as much as .030 in West-East direction relative to A primary and B or C respectivelly, secondary.
Holes orientation --perpendicularity-- can be as much as .005 relative to A
Should we use two single segments or composite tolerancing or neighter one?
We want the holes to be aligned to each other so simultaneous requirement should be in effect. (for example a hole at 12 o'clock and the other at 3 is not accepted)
Thank you
 
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