Numerical Analysis of Elastohydrodynamic Lubrication of Rolling Linear Guides

Li Dong Liu Xiaoling Zhou Jiangmin Liu Fengqi

doi:10.16578/j.issn.1004.2539.2019.11.019

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Numerical Analysis of Elastohydrodynamic Lubrication of Rolling Linear Guides

更新时间：2022-10-25

- Numerical Analysis of Elastohydrodynamic Lubrication of Rolling Linear Guides
- Journal of Mechanical Transmission Issue 11, Pages: 106-110(2019)
- 作者机构：
  
  1.青岛理工大学机械与汽车工程学院，山东青岛 266520
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2019.11.019
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李栋,刘晓玲,周江敏等.滚动直线导轨的弹流润滑数值分析[J].机械传动,XXXX,XX(XX):106-110.

Li Dong Liu Xiaoling Zhou Jiangmin Liu Fengqi.Numerical Analysis of Elastohydrodynamic Lubrication of Rolling Linear Guides[J].Journal of Mechanical Transmission,XXXX,XX(XX):106-110.
李栋,刘晓玲,周江敏等.滚动直线导轨的弹流润滑数值分析[J].机械传动,XXXX,XX(XX):106-110. DOI： 10.16578/j.issn.1004.2539.2019.11.019.

Li Dong Liu Xiaoling Zhou Jiangmin Liu Fengqi.Numerical Analysis of Elastohydrodynamic Lubrication of Rolling Linear Guides[J].Journal of Mechanical Transmission,XXXX,XX(XX):106-110. DOI： 10.16578/j.issn.1004.2539.2019.11.019.

摘要

为研究滚动直线导轨的润滑性能，对LG-45型滚动直线导轨进行了运动分析，建立了导轨副的弹流润滑模型，并对其润滑性能进行了研究，分析了不同接触角、滚珠直径、曲率比、润滑油参数下的油膜厚度，同时讨论了滚珠直径、接触角对导轨副润滑状态的影响。结果表明，在接触角增大时，油膜厚度减小；在滚珠直径增大时，油膜厚度增大；在曲率比增大时，油膜厚度增大，但增加的趋势减小；在相同工况下，润滑油黏度和黏压系数较大时，膜厚较大。在文中研究工况条件下，滚珠直径和接触角变化时不会改变导轨副的润滑状态。

Abstract

In order to study the lubrication performance of rolling linear guides，based on the LG-45 rolling linear guides，the kinematics analysis is carried out. An elastohydrodynamic lubrication（EHL）model is established for the rolling linear guides，and its lubricating performance is investigated. The film thickness with various contact angle，ball diameter，load，curvature ratio and lubricant parameters is analyzed. Effects of the ball diameter and the contact angle on the lubrication state of the guide rail are discussed. The results show that the oil film thickness decreases when the contact angle increases. The oil film thickness increases with the ball diameter increasing. When the curvature ratio increases，the oil film thickness increases，but the increase trend becomes less. Under the same working condition，when the viscosity and viscosity-pressure coefficient of lubricating oil is large，the film is thicker. Variations in the ball diameter and the contact angle cannot change the lubrication state with parameters discussed.

关键词

滚动直线导轨运动分析油膜厚度润滑状态

Keywords

Rolling linear guidesKinematics analysisOil film thicknessLubrication state

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