I need to measure a dimension to the centerline of a radius, but the radius is 2" and only covers an arc of about 25 degrees. Measured on the optical comparator, the radius is nearly nominal, but on the CMM it measures 2.117". This throws my centerline over .100" out of position. How can I create a centerline from points on the radius using the nominal radius? Can I force PC-DMIS to best fit a 2" radius to points on the surface?
Use a fixed Rad algorythem to find center of the rad. then origin on that circle. Now measure points on the radius and report the PR. It gives more of a profile but it will do your trick.
Use a fixed Rad algorythem to find center of the rad. then origin on that circle. Now measure points on the radius and report the PR. It gives more of a profile but it will do your trick.