IDENTIFICATION OF SPINDLE INTEGRATED FORCE SENSOR'S TRANSFER FUNCTION FOR MODULAR END MILLS

摘要

A spindle integrated cutting force system is studied in the paper. Piezoelectric force sensors are embedded to the spindle housing. The transfer function between the force experienced at the end mill and measured at the spindle integrated force sensor varies depending on the stick out length of the end mill. The paper proposes a method which predicts the transfer function of the overall system by coupling the receptances of the analytically modeled end mill and experimentally measured spindle structures. The experimentally proven method allows automated calibration of the spindle integrated force system whenever a tool change occurs.