Instrumented Milling Cutter for In-Process Measurement of Spindle Error Motion

Summary An instrumented cutter developed for a new generation of machining centers designed specifically for die making in the car industry is presented. A three-component accelerometer installed inside of the cutter facilitates the measurement of spindle error motion exactly at the cutter location. The method of signal conversion from accelerations measured by the rotating sensor into the spindle displacements in the machine tool reference system is outlined A setup used in the laboratory tests and representative results are presented.