Calculating true position with angular basic
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Posted by: psnider ® 09/04/2003, 18:03:58 Author Profile Mail author Edit

I know how to calculate a true position based on x and y deviation from basic cartesian. What is the formula for calculating true position when you have a bolt circle basic and an angular basic?

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Re: Calculating true position with angular basic
Re: Calculating true position with angular basic -- psnider	Post Reply	Top of thread	Forum

Posted by: diemeister ® 10/18/2003, 17:22:25 Author Profile Mail author Edit

converting to polar coordinates might help

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Re: Calculating true position with angular basic
Re: Calculating true position with angular basic -- psnider	Post Reply	Top of thread	Forum

Posted by: daves ® 09/18/2003, 01:07:05 Author Profile Mail author Edit

Evaluating true position tolerance does not depend on the way the feature is dimensioned, only on the means by which the distance from the feature axis or centerplane is from the true position described. If the analysis is via CMM you should still get delta-x and delta-y. You might also get a direct radial measurement. If you are gaging, the virtual condition pins at true position won't care how the part was initially dimensioned. Dave S.

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