A29 磁性流体を用いたスマートバランシング主軸によるびびり振動の抑制に関する研究(OS-1 最新工作機械(6))

概要

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Spindle vibration of machine tools causes premature tool wear and deterioration of machining accuracy. Therefore, it is required to realize a real-time balancing mechanism for achieving high accuracy and efficiency machining. In this study, in order to reduce unbalance response of machine tool spindles, a smart spindle with .a real-time balancing mechanism using magnetic fluid is proposed. The magnetic fluid is enclosed inside the spindle, and the distribution of the circumferential mass of magnetic fluid is actively controlled. By applying the proposed balancing mechanism, a machine tool spindle is developed and the feasibility of the balancing mechanism is proved. In this report, chatter vibration avoidance by using the machine tool spindle with the balancing mechanism is studied. Chatter vibration of cutting process is modeled and forcibly generated disturbance is simulated. The disturbance is assumed that the balancing mechanism generates by controlling the distribution of the circumferential mass of magnetic fluid.
2008-11-21