钢-聚合物直齿轮副的弹流润滑分析  

Analysis of Elastohydrodynamic Lubrication for Steel-polymer Spur Gear Pairs

作　　者：周家傲 刘晓玲 李群 张政 Zhou Jia'ao;Liu Xiaoling;Li Qun;Zhang Zheng(School of Mechanical&Automotive Engineering,Qingdao University of Technology,Qingdao 266520,China)

机构地区：[1]青岛理工大学机械与汽车工程学院,山东青岛266520

出　　处：《机械传动》2024年第7期114-120,共7页Journal of Mechanical Transmission

基　　金：国家自然科学基金项目(51775286,51475250)。

摘　　要：聚合物齿轮具有自润滑性好、生产成本低等优点。受载荷、润滑等影响,聚合物齿轮在传动中易发生点蚀失效。与聚合物-聚合物齿轮副相比,金属-聚合物齿轮副有较长使用寿命。为了探究在润滑条件下金属-聚合物齿轮副弹流润滑性能,在不同工况条件下对钢-聚合物齿轮副进行了弹流润滑分析,通过膜厚比和油膜安全系数判断齿轮副润滑状态以及是否存在微点蚀失效。结果表明,钢-聚甲醛(POM)齿轮副在油润滑下能够形成稳定润滑油膜;压力角、转速、载荷和黏度都会影响齿轮的润滑状态。因此,为避免发生点蚀失效,需要考虑压力角、转速、载荷和润滑油黏度的影响。Polymer gears have the advantages of good self-lubrication and low production cost.Polymer gears are susceptible to pitting failure in transmission due to load,lubrication,etc.Metal-polymer gears'pairs have a longer service life than polymer-polymer gear pairs.To investigate the performance of elastohydrodynamic lubrication for metal-polymer gear pairs under lubrication condition,analysis of elastohydrodynamic lubrication is carried out for steel-polymer gear pairs under different working conditions,and the lubrication status and micro-pitting failure are determined by film thickness ratios and oil film safety factors.The results show that steel-polyoxymethylene(POM)gears'pairs can form stable lubricant film under oil lubrication,and the pressure angle,the rotational speed,the load and the viscosity can affect the lubrication state of gears.Therefore,the effects of pressure angle,rotational speed,load and lubricant viscosity need to be considered to avoid pitting failure.

关 键 词：弹流润滑 聚合物齿轮 微点蚀 

分 类 号：TH132.41[机械工程—机械制造及自动化] TH117.2