疲劳点蚀斜齿轮动力学仿真预测与故障识别试验研究  

Dynamic Simulation and Experimental Identification for Fatigue Pitting Helical Gear Fault

作　　者：陈勇[1] 李金锴 臧立彬 刘意气 毕旺洋 杨小朋 CHEN Yong;LI Jinkai;ZANG Libin;LIU Yiqi;BI Wangyang;YANG Xiaopeng(Tianjin Key Laboratory of Power Transmission and Safety Technology for New Energy Vehicles,Hebei University of Technology,Tianjin 300130;Zhejiang Geely Powertrain Co.Ltd,Ningbo 315800)

机构地区：[1]河北工业大学天津市新能源汽车动力传动与安全技术重点实验室,天津300130 [2]浙江吉利动力总成有限公司,宁波315800

出　　处：《机械工程学报》2021年第9期61-70,共10页Journal of Mechanical Engineering

基　　金：国家重点研发计划(2018YFE0207000);国家留学基金委(201906700014);河北省全职引进高端人才资助项目。

摘　　要：斜齿轮是汽车变速器的核心传动零部件,齿面点蚀是影响汽车变速器传动平稳与可靠性的主要故障形式之一。通过冲击函数法,接触线百分比法和齿轮系统动力学理论,建立了不同点蚀类型的斜齿轮系统动力学模型,分析了点蚀斜齿轮系统的动态响应。同时,通过齿轮疲劳点蚀试验,获得了不同点蚀程度齿轮振动加速度信号,并通过快速傅里叶变换(Fast Fourier transformation,FFT)分析,得到了不同点蚀程度对齿轮振动加速度的时域和频域特征变化规律,验证了动力学模型的准确性。结果表明,运用动力学方法分析斜齿轮系统动态响应可以对斜齿轮点蚀程度和点蚀形式进行预测和识别。Helical gears are the core components of automobile transmissions, and tooth pitting is one of the main failure forms that affect the transmission stability and reliability of automobile transmissions. Based on the impact function method, contact line percentage method and gear system dynamics theory, the dynamic model of helical gear system with different pitting types is established. The dynamic response of pitting helical gear system is analyzed. At the same time, through the gear fatigue pitting test, vibration acceleration signals of gears with different pitting degrees are obtained. The time and frequency domain characteristics of different pitting degrees on gear vibration acceleration are obtained through FFT analysis. Thus, the accuracy of the dynamic model is verified. The results show that the dynamic response of the helical gear system can be used to predict and identify the pitting degree and form of the helical gear.

关 键 词：斜齿轮 点蚀 动力学 动态响应 

分 类 号：TH132[机械工程—机械制造及自动化]