固有振動数からみた波動歯車装置のねじり剛性について

概要

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The torsional rigidity of strain wave gearing has been studied experimentally using a Abstract : twisting test until recently. This method used a twisting test belongs to the field of statics. But the method used in this study that the torsional rigidity of the gearing is considered from its natural frequency belongs to the field of kinetics. The natural frequency of torsion of the gearing was measured at a state in which a high speed shaft of the gearing was fixed and a low speed shaft, that was attached a disc of inertia, was free. It is known that the natural frequency "fn" of the single degree of freedom system is shown as following f_n=√<k_d>/J(2π). Where "k_d" is the torsional rigidity, and "J" is the moment of inertia. If f_n and J are known, k_d is calculated from this equation. This paper describes the relationship between k_d Which is obtained from the natural frequency of the gearing and k_s obtained from the twisting test.
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