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Re: True Position Gage

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Posted By<" ">Don Laughery on April 24, 2002 at 20:44:52:

In Reply to: True Position Gage posted byAlex D. on January 25, 2002 at 20:04:09:

: When designing a true position go/no go fixture for a four bolt hole circle from a center point and all locations located at their absolute nominal, would I just reduce the diameter of the location pis by the allowable true position circular area?
: Example; Hole dia.= .472-.476
: True pos.= .008(M) True pos. circular area limits = +/-.0028
: Reduce "ALL" pins. .472(L)-2(.0028) = .4664

In 1993, I wrote a GW-Basic program for analyzing
true position data from open setup inspection.
Along with it I wrote some essays intended to
teach the rudiments of true position. This
material covers the question you asked in your
post. If you would like a (free) copy, let me
know, and I'll email it to you.
Don Laughery
Catonsville, MD

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< "> Subject: Re: Re: True Position Gage

Comments: : : When designing a true position go/no go fixture for a four bolt hole circle from a center point and all locations located at their absolute nominal, would I just reduce the diameter of the location pis by the allowable true position circular area? : : Example; Hole dia.= .472-.476 : : True pos.= .008(M) True pos. circular area limits = +/-.0028 : : Reduce "ALL" pins. .472(L)-2(.0028) = .4664 : In 1993, I wrote a GW-Basic program for analyzing : true position data from open setup inspection. : Along with it I wrote some essays intended to : teach the rudiments of true position. This : material covers the question you asked in your : post. If you would like a (free) copy, let me : know, and I'll email it to you. : Don Laughery : Catonsville, MD

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