被削材のびびり振動に及ぼす工員形状の影響 : 第2報,工具のすくい角が負の場合

概要

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The effects of the rake angle and the roundness of the cutting edge on the static and dynamic cutting forces are researched experimentally with a tool whose rake angle is negative. And the result is compared with the result which the authors have already reported for a tool whose rake angle is positive. The following findings were obtained: (1) the increasing rate of the horizontal cutting force to the depth of the cut changes at two points; the first change is caused by the roundness of the cutting edge and the second change is cause by the negative rake angle; (2) chatter vibrations occur at these two points; (2-1) at the first point, the same chatter vibration as already reported by the authors occurs; (2-2) at the second point the negative rake angle makes the chip flow unstable, which is one of the causes of primary chatter vibration.
一般社団法人日本機械学会の論文
1988-08-25