直動形油圧駆動機構におけるスティックスリップの発生限界

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タイトル別名
  • Theoretical Analysis of Critical Conditions of Stick-Slip in Hydraulic Driving Mechanism
  • チョクドウケイ ユアツ クドウ キコウ ニ オケル スティックスリップ ノ ハッセイ ゲンカイ

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抄録

Stick-slip is often observed in the sliding surfaces of machine tool. It was shown in the previous paper that the result of theoretical analysis of stick-slip in the hydraulic driving mechanism coincided with the experimental results. This paper deals with the theoretical analysis of critical conditions of stick-slip. The range of stick-slip occurrence is represented graphically in a non-dimensional form. The conditions whether stick-slip occurs or not are given in terms of the mass of moving part, the friction-velocity relation of slide-way, the pressure-flow characteristic of flow control valve, oil compressibility and others. Furthermore the influence of change of these parameters are discussed, and it is shown that the more rarely the stick-slip occurs, the smaller the mass of moving part, the difference between static and Coulomb friction and the oil compressibility are, and the larger the coefficient of viscous damping and oil flow through the cylinder are.

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