新型FT针摆传动应力均衡齿廓修形技术研究

Research on tooth profile modification of stress balance for new FT pin-cycloid drive

传统的修形方法是在牺牲传动精度的基础上增加承载能力(用于通用传动中),或是牺牲承载能力提高传动精度(用于高精传动中)。文中找到了一种修形方法,可以在传动精度和承载能力之间找到一种平衡,得到的修形齿廓可以有更广泛的应用。通过这种新的修形方法,既可以保证摆线轮的传动精度,又可以提高摆线轮的承载能力。这种修形方法采用应力均衡原理,减小啮合过程中的最大应力,提高承载能力,同时减小齿侧间隙,提高传动精度。通过与现有的修形齿廓(弓背齿廓和反弓齿廓)进行对比,来证明新的修形方法的优势和可行性。

The traditional method of modification,aiming at increasing the bearing capacity at the expense of transmission accuracy,is applied in terms of general transmission.Or,with a higher standard of transmission accuracy at the expense of carrying capacity,it is applied in the field of high-precision transmission.In this article,based on a series of analysis,a method of tooth profile modification is proposed to find a balance between the transmission accuracy and the bearing capacity,so that the modified tooth profile can be applied more widely.This new method not only ensures the transmission accuracy of cycloid gear,but also enhances its bearing capacity.It adopts the principle of stress balance to reduce the maximum stress in the course of meshing,with a view to a higher standard of bearing capacity and transmission accuracy.Compared with the existing modified tooth profile-arch-back tooth profile and inverse arch-shaped tooth profile,the newly-modified tooth profile has certain advantages,and this method proves feasible.