はすば歯車系の振動解析 : 第3報, 振動に及ぼす歯面形状の影響の解析法と評価法の提案

Based on the 12-degree of freedom dynamic model of a helical gear system, which was constructed by putting dynamic contributions of shafts and bearings at the centers of gear bodies, a method to take gear tooth surface deviations into account as the exciting force is presented in this paper. The effect of the tooth surface form has been counted for in terms of error excitation in the plane of action where the force interacts between two mating gears through two parallel spring representing tooth-to-tooth elasticity. The method has been verified experimentally by giving shaft misalignment, or the helix slope deviation. A chart named "Amplitude Factor Contour Diagram" is also proposed which is able to suggest tolerable deviations coming from manufacturing, assembling or operating conditions.