Automatic calibration and compensation for a cnc machine table and an associated probe
AssigneeGM Global Technology Operations LLC
InventorsJie Gu, John S. Agapiou, Sheri K. Kurgin, Paula J. Deeds
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Abstract
A method for calibrating a CNC machine comprises mounting a gauge to a table of the CNC machine and calibrating a probe to the gauge mounted on the CNC machine. A total deviation of the probe and an actual table center position from a nominal table center position for a coordinate system associated with the CNC machine are determined. A controller operatively connected to the CNC machine and the probe is programmed to compensate for the total deviation.
Claims20
A method for calibrating a CNC machine comprising:
- mounting a gauge to a table of the CNC machine;
- calibrating a probe to the gauge mounted on the table;
- determining a total deviation of the probe and an actual table center position from a nominal table center position for 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.
A method for calibrating a probe to a gauge mounted on a CNC machine comprising:
- measuring a plurality of points about a circumference of the gauge with the probe;
- and
- calculating a center point of the gauge utilizing the plurality of points measured by the probe.
A method of calibrating a probe and CNC machine table center to a coordinate system for a CNC machine comprising:
- measuring a first actual gauge position on the coordinate system for the CNC machine with the probe;
- rotating a table for the CNC machine and measuring a second actual gauge position;
- calculating the offset in the total deviation of the probe and the actual machine table center to a nominal machine table center using the first and the second actual gauge positions;
- and
- programming a controller for the CNC machine with the calculated total deviation to calibrate the probe and machine table center to the coordinate system for the CNC machine.
Dependencies are inferred from the claim text.