Calibrating the touch probe on a sphere

The touch probe head is calibrated by approaching a sphere of known diameter several times. The shifts of the touch probe head in the X and Y directions and the radius of the touch probe sphere are included in the identified calibration parameters. In addition, the length of the touch probe is determined by specifying a reference parameter for the Z axis. Optionally, the calibration of the known sphere centre point is repeated to improve the calibration accuracy.

This cycle is only suitable for calibrating a touch probe providing there is a negligible difference between the trigger offset in Z and the trigger offset in X and Y.

Notice

The sphere diameter must be significantly greater than the sphere diameter of the touch probe for the calibration.