Patent ID: 8577495
Filing Date: 2013-11-05
Classification: G05B

Abstract:
1. A method for calibrating a CNC machine comprising: mounting a spherical gauge to a table of the CNC machine; measuring a first plurality of points about a circumference of the spherical gauge with a probe; calculating a first center point of the spherical gauge utilizing the first plurality of points measured by the probe; rotating the table; measuring a second plurality of points about the circumference of the spherical gauge with the probe; calculating a second center point of the spherical gauge utilizing the second plurality of points measured by the probe, the second center point being rotated about an actual table center from the first center point; determining the coordinates of the actual table center from the first center point and the second center point; determining a total deviation of the probe and the actual table center from a nominal table center position within a coordinate system associated with the CNC machine; and programming a controller operatively connected to the CNC machine and the probe to compensate for the total deviation.