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Measuring the size of a 3 Sided Polygon

Hello Everyone,

Just a cmm noob with another question. My company needs me to verify thesize of a polygon (3 sides). We do not have a go/no go pin in yet and they are asking for answers. PCDMIS is showing the Polygon to be larger than nominal and they do not believe my results. (Measured as Auto Polygon) Is there a secondary study I can do to prove the size of a polygon without using Auto Feature and in your experience is Auto feature on a polygon reliable when it comes to measuring Diameters. I would assume I need to do some sort of study and measure from the center of the rads to the Middle of the opposing lines and do some sort of Intersecting points. Using PCdmis 2021.1

Thanks in advance to anyone who answers.
Parents
  • Is it a "ROUNDED POLYGON"? You can scan it and do profile of a line. Or you can scan one small radius find the max index or extreme point and do the same for the opposing large radius. this is how you check a Stoffel polygon with a micrometer. distance across opposing "radii". If it is a Stoffel then it is actually a spline generated from a formula. See the Machinist handbook.
Reply
  • Is it a "ROUNDED POLYGON"? You can scan it and do profile of a line. Or you can scan one small radius find the max index or extreme point and do the same for the opposing large radius. this is how you check a Stoffel polygon with a micrometer. distance across opposing "radii". If it is a Stoffel then it is actually a spline generated from a formula. See the Machinist handbook.
Children
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