旋削材に発生する再生びびり振動の検知

概要

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In this paper, we propose a new method of detecting regenerative chatter of turning workpiece by using spectrum of vibration of the workpiece. Characteristics of vibrations of the workpiece during cutting was investigated first, and then algorithm of detection was thought out from the investigated results. In this algorithm, it was assumed that regenerative chatter had occurred when the following conditions were satisfied in progress of cutting. (1) Frequency at the peak of spectrum obtained every revolution was almost constant while the workpiece made three revolutions.(2) The amplitude of vibration in thrust force direction was larger than surface undulation of the workiece when the condition (1) was satisfied. Validity of this method was found by several cutting tests on which cutting speed and width of cut were varied in orthogonal cutting. Furthermore, it was shown that regenerative chatter of turning workpiece could be detected also by using spectrum of dynamic cutting force or acceleration of cutting tool.
一般社団法人日本機械学会の論文
1993-11-25