电动车减速器齿轮传递误差综合影响因素研究

Research on Gear Transmission Error Comprehensive Affecting Factors of Electric Vehicle Reducer

本文主要针对电动汽车减速器齿轮传递误差影响因素开展研究。由于制造与安装误差、运行中受力变形以及齿面的微观修形等,齿轮不能在全齿面上共轭接触,齿轮啮合点会偏离理论啮合线一定距离,从而产生传动误差,成为齿轮振动噪声的主要激励源。本文以减速器斜齿圆柱齿轮为例,研究其传递误差影响因素,降低传递误差峰-峰值至0.1μm水平,并以某款电动车减速器一级齿轮副为例进行仿真优化及整车车内噪声验证。

This paper focuses on researching the influence factors of electric vehicle reducer gear transmission error.Due to multiple factors such as manufacturing,installation error,the mechanical deformation in the operation and gear tooth surface modification,gears can't be conjugated in the entire tooth contact surface.Gear mesh point will deviate from the theoretic meshing line a certain distance,resulting in transmission error,which becomes the main source of gear vibration and noise.This paper takes helical cylindrical gear of the reducer as an example to research the influence factors of gear transmission error,and reduces the transmission error peak-to-peak value to 0.1μm level.Finally the first gear pair of one e-drive reducer is optimized and applied on the vehicle to verify the noise performance improvement.