Method for determining position of rotation center and orientation of round axle of machine, involves determining midpoint of ball of calibration ball on basis multiple contacts of calibration ball with measuring probe

摘要

The method involves determining a midpoint of a ball (PM1) of a calibration ball (2) on the basis of multiple contacts of the calibration ball with a measuring probe (3) at different positions of the calibration ball surface by operating the linear axes (X,Y,Z) of the machine. A rotation angle (alpha) of the round axle remains constant by the operation of the linear axes. Another midpoint of the ball (PM2) of a calibration ball is determined. A rotary motion of the round axle is carried out. A third midpoint of the ball (PM3) of a calibration ball is determined. A position (M) of a rotation center and an orientation (O base bar-RA1) of a round axle (5) is detected on the basis of the former, latter and third midpoints of the ball. An independent claim is also included for a computer program product for the execution of the method.