为了对高速斜齿轮啮合进行探究，首先通过有限元法构建多自由度的转子-轴承系统动力学方程，并计算齿轮啮合的固有频率，通过Newmark-β法计算位移响应，之后应用KISSsoft建立几何模型并对其齿形在齿廓和齿向两方面进行修形，应用ANSYS Workbench对修形前、后的斜齿轮副进行瞬态分析，并通过在等效应力、疲劳寿命和安全系数方面进行对比分析。结果表明：修形后的斜齿轮等效应力下降，疲劳寿命增加，安全系数提高，证明该修形方式的可行性，为设计高速斜齿轮啮合研究提供了参考。

In order to investigate the meshing of high speed helical gears, firstly, the dynamic equation of rotor-bearing system with multiple degrees of freedom was constructed by finite element method, and the natural frequency of gear meshing was calculated. Then, the displacement response was calculated by Newmark-β method. Secondly, KISSsoft was applied to establish the geometric model and modify the tooth shape in both profile and direction. The transient analysis of helical gear pairs before and after modification was carried out by using ANSYS Workbench, and the comparative analysis was carried out in terms of equivalent stress, fatigue life and safety factor. The results show that the modified helical gear has reduced equivalent stress, increased fatigue life and improved safety factor, which proves the feasibility of the modified method and provides a reference for the design of high-speed helical gear meshing research.