Calibration method for a spherical measuring probe

摘要

The method involves rotating a spherical-shaped sensing probe (14) by a spindle drive from baseline measurement to base measurement around an angle around a spindle axis. A reference position of a tool spindle is determined relative to an element of a machine tool based on base positions. The tool spindle is provided over a calibrating ball (7) and a spindle shaft is provided by a central point (7') of the calibrating ball, and an actual radius (R) of the sensing probe and offset are determined relative to the spindle axis based on additional positions. Independent claims are also included for the following: (1) a computer program comprising a machine code with a set of instructions for performing a method for calibrating a spherical-shaped measuring probe (2) a controlling device for a machine tool (3) a machine tool.