Method for calibrating measuring force in coordinate measuring apparatus utilized for determining e.g. diameter of drill hole, involves determining actual measuring force based on measured variable and defined flexural rigidity

摘要

The method involves moving a probe head (20) relative to a workpiece holder (12) until a plunger (22) contacts a stopper (26). A target measuring force with which the plunger is pressed against the stopper is adjusted, and a measured variable representing a bending displacement of the plunger is determined based on the target measuring force. An actual measuring force is determined based on the measured variable and a defined flexural rigidity of the plunger. The target measuring force and the actual measuring force are adjusted. Independent claims are also included for the following: (1) a coordinate measuring apparatus for determining a space coordinate at a device under test (2) a computer program product with a carrier medium comprising program code for performing a method for calibrating a measuring force in a coordinate measuring apparatus.