Abstract
In this research, we proposed a wide band cutting force estimation method in ball screw driven stage using full-closed control. To estimate cutting force, servo information of the drive system such as motor current reference, motor rotation angle, and also stage position response is used. Simulation result indicates that the proposed method enables to estimate accurately around resonance frequency of the ball screw in an axial direction. From the experimental results in milling process under acceleration/deceleration of the stage, it is confirmed that cutting force is estimated depending on tooth pass frequency without the influence of acceleration/deceleration of the stage.
