INVESTIGATION OF FEED DRIVING MOTION FOR 5-AXIS CONTROLLED MACHINE TOOLS WITH AN AUTOMATIC IDLING REDUCTION SYSTEM

抄録

In order to reduce unnecessary power consumption by machine tools, we propose improved control methods for current idling reduction systems that shut off the power to the motor. When current idling reduction system is used, the servo lock function does not work, causing a displacement error that increases power consumption and vibration. Therefore, we devised two control methods to reduce the displacement error of such an idling reduction system. One method corrects the command movement distance when operating the idling reduction system after the feed operation. The other method delays the operation timing of the idling reduction system using a dwell command. Both methods reduce the positional shift compared with the uncorrected system.