主催: 一般社団法人 日本機械学会
会議名: 第11回生産加工・工作機械部門講演会
開催日: 2016/10/22 - 2016/10/23
Multi-tasking machine tool with multi-turret is attracting a great deal of attention, which can offer higher efficiency and higher accuracy. However, chatter vibration generated during parallel turning with two tools might be one of the bottlenecks for higher material removal rate. To suppress chatter vibration, we proposed unequal pitch turning method in this research. In this method, the upper tool was properly controlled based on optimum pitch angle calculated from spindle speed and chatter frequency. Chatter frequency was identified from estimated cutting force by disturbance observer. From the result of parallel turning test, it is clear that chatter vibration can be suppressed by controlling the upper tool based on optimum pitch angle.