行星齿轮传动系统的啮合冲击特性运动仿真

建立NGW型行星齿轮传动系统的弯扭耦合非线性动力学模型,采用龙格库塔直接数值积分的方法研究综合啮合误差,以及传递功率等系统参数对行星齿轮传动系统啮合冲击特性的影响规律。结果表明,行星齿轮传动系统存在一个较大的误差阀值和一个较小的误差阀值,当误差小于较小的误差阀值时,各齿轮副都不会出现啮合冲击现象;当误差大于较小的误差阀值而小于较大的误差阀值时,某些齿轮副会出现"单边冲击"现象;当误差大于较大的误差阀值时,系统某些齿轮副会出现"双边冲击"现象;相对较小的传递功率更容易导致行星齿轮传动系统"单边冲击"现象的发生。研究结果可为设计振动噪声更低、运行品质更优的减速器提供理论参考。

Kinematics simulation about meshing impact performance

Based on the nonlinear bending-torsional coupling vibration mode of a NGW Planetary Gear Train, the meshing impact performance of the planetary gaear train is studied by using Runge-Kutta direct numerical integration method and some influence rules were gotten on the parameters such as composite meshing error and Power. The study results reveal that there are two error thresholds, one is small and another is big. The impact phenomenon will not appear if the composite meshing error value is smaller than the small error threshold. The unilateral impact phenomenon will appear if error value is bigger than the small error threshold but smaller than the big one. The bilateral impact phenomenon will appear if error value is bigger than the big error threshold. A small Power can more easily lead to unilateral impact phenomenon. Research results of this paper can provide some theoretical support to design a lower vibration noise, better running quality food machinery reducer.