切削加工トルクのインプロセス制御

概要

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This paper concerns an in-process torque control system in drilling processes of machine tools. In drilling processes, it is necessary to increase the drilling speed without drill breakage. However, increase of the drilling speed often leads to breakage of the drill by the excessive torque arising from the undesiable conditions such as wear of the drill and the misadjustment of the feed rate of the drill. In order to overcome this problem, it is necessary to measure and control the cutting torque in real time. Our objective is to construct a system which can control the cutting torque irrespective of drill wear and the material of target workpieces. Paying attention to the characteristic that the cutting torque is almost proportional to the feed of the drill, a PID control system which varies the feed rate is constructed. From the experimental results, the proposed system can control the cutting torque and suppress the vibration of the cutting torque without breakage of the drill. Furthermore, some advantages of the torque control system are discussed.
一般社団法人日本機械学会の論文
1995-07-25