齿轮磨损寿命预测方法

The wear life prediction method of gear system

以渐开线直齿圆柱齿轮为研究对象,通过理论推导,研究齿轮啮合过程中轮齿间各状态参量随啮合角的变化规律.引入磨损步长,对连续磨损过程进行离散化处理,通过磨损步长内的准静态模型代替数学上无法求解的动态非线性磨损模型,实现了对齿轮磨损问题的数值仿真.其中应用Achard磨损模型,充分考虑了齿轮负载及转速对齿轮副齿面磨损的综合影响,建立了齿轮磨损寿命预测模型,编制了相关程序,可实现对不同齿轮、不同工况下磨损寿命的预测,从理论上解决了齿轮磨损寿命的预测问题,具有一定的理论价值及工程应用前景.

A numerical prediction on wear life formation is carried out in involute spur gear. The sliding velocity and contact pressures are computed along the contact zones at each rotational gear position, then the Con- tinuous wear process are discretized by introducing wear step. A quasi-static model instead of the nonlinear wear model in the wear step is used to simulate the gear wear problem based on a generalized Achard wear e- quation which takes full account Of the load and speed combined effects. A gear wear life prediction model is established, and then the procedures are developed which can predict the wear life of different gears or under different operating conditions.