少齿差金属橡胶复合摆线齿轮副动态特性分析

金属橡胶具有很强的变形补偿能力，可帮助实现高精密传动。介绍了复合摆线齿轮副的结构及原理，建立了齿轮副的三维模型，并在ADAMS中建立起此金属橡胶齿轮副的刚柔混合模型后进行动力学仿真，分析了弹性模量变化、双联齿轮间隙及两对齿轮副中心距对少齿差复合摆线齿轮副角速度、角加速度、啮合力和传动误差的影响，同时对比分析了刚性、刚柔复合2种齿轮副输出轮角速度以及传动误差的差异。结果表明增大少齿差齿轮副中心距、适当增大金属橡胶弹性模量和双联齿轮间隙可减小振动波动，刚柔复合摆线齿轮的角速度和传动误差整体波动均比刚性齿轮副小，说明金属橡胶在新型NN型两级少齿差齿轮副中起到了减振效果。

Dynamic characteristic analysis of a metal-rubber composite-cycloid gear pair with a small tooth difference

The metal-rubber composite-cycloid gear pair with a small tooth difference has small volume and compact structure. Metal rubber has a strong deformation compensation ability and can help realize high precision transmission. The structure and principle of the composite-cycloid gear pair were introduced, and a three-dimensional model of the gear pair was established to explore the influences of structural parameters of rigid and rigid-flexible gear pairs on their dynamic characteristics. After a rigid flexible mixed model of the metal-rubber gear pair was established in ADAMS, the dynamic simulation of the metal-rubber gear pair with a small tooth difference was carried out. The influences of the changes of elastic modulus, the clearance of the double gear, and the distance between the centers of the two pairs of gears on the angular velocity, the angular acceleration, the meshing force, and the transmission error of the metal-rubber gear pair were analyzed. At the same time, the differences of the angular velocity and the transmission error between the rigid and rigid-flexible composite gear pairs were analyzed. The results show that the vibration fluctuation can be reduced by increasing the distance between the centers of the gear pair with a small tooth difference, and increasing the elastic modulus of metal rubber and the clearance of double gear. The angular velocity and the transmission error of rigid-flexible composite cycloid gears are smaller than those of rigid gears, indicating that the metal rubber plays a role in reducing vibration in the new NN gear pair with a small teeth difference.