变位齿轮在直升机传动系统中的应用研究

Application of Profile Shifted Gear in the Helicopter Transmission System

为了研究变位齿轮在直升机传动系统中的应用,以一对大传动比的直升机齿轮对为例,研究变位系数对齿轮的齿根滑动系数和重合度的影响,并讨论变位和非变位齿轮的接触应力、弯曲应力变化情况。结果表明,变位处理可以使齿根滑动系数接近,同时对重合度影响较小,降低了齿轮的接触应力和弯曲应力。

In order to study profile shifted gear in the helicopter transmission system,a pair of large ratio helicopter gear is studied.The influence of modification coefficient on gear tooth root sliding rate and contact ratio is studied,and the variation of profile shifted gear and master gear contact stress,bending stress is discussed.The results show that modification treatment can make the root sliding coefficient close,while the influence on contact ratio is small,the gear contact stress and bending stress are reduced.