Patent ID: 9068809
Filing Date: 2015-06-30
Classification: G01B

Abstract:
1. A method for determining characteristics of a shim fittable between first and second bodies, comprising: (a) placing optical targets in holes in a first body; (b) scanning a surface of the first body using a three-dimensional scanner to acquire point cloud scan data, measured hole vector data and other discrete feature data for the first body; (c) processing the point cloud scan data, measured hole vector data and other discrete feature data for the first body to derive first deviation values representing the deviation of the surface of the first body from a nominal surface of the first body for a first grid of points; (d) placing optical targets in holes in a second body; (e) scanning a surface of the second body using a three-dimensional scanner to acquire point cloud scan data, measured hole vector data, and other discrete feature data for the second body; (f) processing the point cloud scan data, measured hole vector data, and other discrete feature data for the second body to derive second deviation values representing the deviation of the surface of the second body from a nominal surface of the second body for a second grid of points; (g) correlating the first deviation values with the second deviation values based on a best fit position of the first body relative to the second body; and (h) computing shim gap values based on said correlated first and second deviation values.