主动修形参数对面齿轮副承载特性的影响

INFLUENCE OF ACTIVE MODIFICATION PARAMETERS ON BEARING CHARACTERISTICS OF OPPOSITE GEAR PAIRS

齿轮主动设计是一种可以直接预控齿轮啮合性能的方法,为了研究齿轮主动设计对面齿轮副承载特性的影响规律,对面齿轮副主动修形参数与齿面承载特性之间的关系展开了研究。首先采用有限元法建立了齿轮副接触模型,之后设计不同组主动修形参数进行仿真分析。结果显示,几何传动误差对轮齿传动平稳性以及齿面接触强度影响较大,可通过控制几何传动误差幅值来控制承载传动误差幅值;预设接触路径倾斜角度控制在30°邻域内可获得较好的承载接触特性,接触椭圆长度主要影响齿面接触强度与齿根弯曲强度,根据仿真结果,预设接触椭圆长度取齿宽的0.5~0.75时,面齿轮副具有较好的承载接触特性。

Active gear design is a method that can pre⁃control gear meshing performance directly.In order to study the influence of active gear design on the bearing characteristics of tooth surface,the relationship between active modification parameters of the face gear and bearing characteristics of tooth surface is studied.Firstly,the contact model of the gear pair is established by the finite element method,and then different groups of active modification parameters are designed for simulation analysis.The results show that the geometric transmission error greatly influences gear transmission stability and contact strength,and controlling its amplitude can control bearing transmission error amplitude.Pre⁃designed contact path inclination angle within 30°neighborhood,bearing contact characteristics are better.The contact ellipse length mainly affects the contact strength of tooth surface and bending strength of tooth root.According to the simulation results,when it takes 0.5~0.75 times of tooth width,face gear pair has better bearing contact characteristics.