倾斜式双滚子包络环面蜗杆传动热弹流润滑分析  

Analysis of Thermal Elastohydronamic Lubrication of Inclined Double-roller Enveloping Hourglass Worm Drive

作　　者：欧玥[1] 李金宽 朱焱[1] 柳在鑫[1] 廖鸿辉 Ou Yue;Li Jinkuan;Zhu Yan;Liu Zaixin;Liao Honghui(School of Mechanical Engineering,Xihua University,Chengdu 610039,China)

机构地区：[1]西华大学机械工程学院,四川成都610039

出　　处：《机械传动》2018年第7期33-37,共5页Journal of Mechanical Transmission

基　　金：教育部春晖计划项目(Z2015105);四川省教育厅重点项目(17ZA0358);西华大学自然科学基金(Z1420208)

摘　　要：为了改善蜗杆传动副的润滑性能和抗胶合能力,提高其传动效率,在弹性流体动压润滑理论和倾斜式双滚子包络环面蜗杆传动啮合特点研究的基础上,建立了倾斜式双滚子包络环面蜗杆传动的线接触弹流润滑模型;基于Ree-Eyring流体线接触弹流润滑膜的数学模型,分析传动过程中等温最小油膜厚度及热弹流润滑最小油膜厚度的分布规律,分析了滚柱半径、滚柱偏距、喉径系数及倾斜角对热弹流润滑最小油膜厚度的影响。分析结果表明,倾斜式双滚子包络环面蜗杆传动具有更好的润滑性能;滚柱半径和喉径系数对传动副的润滑性能影响最大,为了使该传动副保持较好的润滑性能,其滚柱半径不宜过大,滚柱偏距和喉径系数不宜过小。To improve the lubrication performance,anti-scuffing capacity and efficiency of enveloping worm,the elastohydrodynamic lubrication（ EHL） line contact model is established based on the research of meshing performance of inclined double-roller enveloping hourglass worm drive and the theory of EHL. According to the line contact mathematical model with Ree-Eyring fluid,the distribution of the minimum film thickness of EHL and thermal EHL（ TEHL） are analyzed. The roller radius,offset distance,orifice coefficient and inclined angler,which impacted the lubrication performance of this worm drive are analyzed. The analysis results indicate that the inclined double-roller enveloping hourglass worm drive has better lubrication performance,the roller radius and orifice coefficient have the biggest impact on TEHL. In order to keep good lubrication performance of this worm drive,the roller radius should be not too large,the offset distance and orifice coefficient are not too small.

关 键 词：双滚子 环面蜗杆传动 弹性流体动压润滑 Ree-Eyring流体 最小油膜厚度 

分 类 号：TH132.44[机械工程—机械制造及自动化]