APPARATUS AND METHOD FOR AUTOMATICALLY DETECTING AND COMPENSATING FOR A THE BACKLASH OF A MACHINE TOOL

摘要

According to the present invention, a torque variation of a servo motor (11) measured in a numerical control(NC) device (NC) of an existing numerical control (NC) machine tool is observed so as to calculate a the transferred distance of an outer shaft (11a) of the servo motor (11) at a torque peak, to thereby detect a backlash without additional positioning detection equipment. Thus, accurate backlash detection may be performedthe amount of backlash may be accurately detected without need of additional equipment.