非対称断片線形特性を有する系の強制振動について : 第3報, 連続物体系の場合, 超音波加工機への応用

概要

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By further developing the hitherto utilized dynamical model of the typical ultrasonic carving machine, we considered it as an unsymmetrical piecewise-linear system containing a solid horn as a continuous body. And by applying the analytical method introduced by the author in the 1st report to the solving of the forced vibrations of this system, we deduced theoretically various working characteristics of the ultrasonic carving machine. Some of them explain the experimental results only qualitatively, but some do even quantitatively. These are 1) Existence of the optimun feeding force, 2) That this optimum feeding force is realized when the contact time ratio ranges from 0.2 to 0.4,3) That the optimum feeding force is directly proportional to the magneto-strictive exciting force, 4) Maximum impulsive force versus feeding force characteristics and phase lag angle versus feeding force characteristics, 5) That the optimum exciting frequency is slightly higher than the resonance frequency, 6) Oscillation jumping phenomena peculiar to nonlinear resonance.
社団法人日本機械学会の論文
1960-07-25