谐波齿轮传动柔轮的变形分析

Analysis on deformation of flexible gear in harmonic gear drive

柔轮是谐波齿轮传动装置的主要部件,柔轮的变形直接影响柔轮的应力、寿命及谐波齿轮传动机构工作的可靠性。本文通过理论推导,建立了双波谐波齿轮传动环形柔轮变形量、截面弯矩的计算模型,提出了柔轮变形敏感度的概念,并对柔轮变形的敏感度与中性层曲率半径变化进行了仿真,得出了柔轮齿数的合理取值范围及柔轮圆环危险截面的位置,可为柔轮的性能分析、改进设计提供参考。

Flexible gear is the chief part in harmonic gear drive. The deformation of flexible gear affects directly the stress, worklife of Flexible gear and the reliability of harmonic gear drive. In this paper, the computation model for deformation and cross-section moment on ring-flexspline of two-wave harmonic gear drive is established theoretically. A concept of deformation sensitivity on flexible gear is put forward. Reasonable value for gear-number and the location for critical section of ring-flexspline are concluded based on the simulative analysis about deformation sensitivity and curvature radius of neutral layer for ring-flexspline, which is for reference to analyze the features and then to improve or redesign on current used flexspline.