切りくずの不連続形成に起因する刃先の振動

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書誌事項

タイトル別名
  • The Vibration Tool Caused by the Formation of the Discontinuous Chip
  • キリクズ ノ フレンゾク ケイセイ ニ キイン スル ハサキ ノ シンドウ

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抄録

In β brass-cutting operation the chip is formed by the shear fracture, which occurs intermittently and the vibration of cutting edge frequently occurs. The motions of the cutting edge and workpiece were measured simultaneously by the optical method. The amplitude of vibration increases and the frequency decreases as the thickness of chip increases. The frequency increases proportionally to the increase of cutting speed. The shape of segmental chip shows nearly the similar figure, even if the thickness of chip is changed. When the cutting angle 90° is used the amplitude of vibration is smaller than the case in which the cutting angle 70° is employed. The cause and the character of this forced vibration completely differ from that of chatter which is self-excited. The vibration is effectively prevented by the decrease in the tool length.

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