基于油膜厚度最优化的滚柱包络环面蜗杆传动润滑状态研究  

Study on lubrication state of roller enveloping hourglass worm drive based on optimization of oil film thickness

作　　者：张鹏 ZHANG Peng(School of Intelligent Engineering,College of Mobile Telecommunications Chongqing University of Posts and Telecom,Chongqing 401520,CHN)

机构地区：[1]重庆邮电大学移通学院智能工程学院,重庆401520

出　　处：《制造技术与机床》2021年第5期58-62,共5页Manufacturing Technology & Machine Tool

摘　　要：为了研究滚柱包络环面蜗杆传动的润滑状态,在滚柱包络环面蜗杆传动啮合理论研究和弹性流体动力润滑理论的基础上,建立了牛顿流体线接触等温状态下的最小油膜厚度公式,基于此建立传动副润滑状态计算模型,得出了滚柱包络环面蜗杆传动在一个啮合周期内膜厚比时域分布规律,最后分析了喉径系数、滚柱半径、中心距和润滑油动力黏度对滚柱包络环面蜗杆传动润滑状态的影响。算例表明,该传动副在整个传动周期内以部分弹流润滑为主;增大喉径系数、中心距和润滑油动力黏度,减小滚柱半径,能够有效改善传动副的润滑状态。To study the lubrication states of the roller enveloping hourglass worm drive,the isothermal line contact minimum film thickness is established based on the research of meshing theory of the roller enveloping hourglass worm drive and the theory of elastohydrodynamic lubrication(EHL).Based on this,a calculation model of the lubrication state of the roller enveloping hourglass worm drive is established,the distribution of the film thickness ratio is analyzed.The influence that orifice coefficient,roller radius,center distanceon,lubricant dynamic viscosity to lubrication characteristics of this worm drive are analyzed at last.It can be concluded as that the roller enveloping hourglass worm drive is dominated by the partial EHL in the working cycle.The example analysis results indicated that the EHL states can be effectively improved by properly increasing orifice coefficient,center distanceon,lubricant dynamic viscosity and reduce the roller radius.

关 键 词：滚柱包络 环面蜗杆 润滑状态 膜厚比 

分 类 号：TH132[机械工程—机械制造及自动化]