Page 80 - 《摩擦学学报》2020年第3期

第 40 卷 第 3 期 摩 擦 学 学 报 Vol 40 No 3
2020 年 5 月 Tribology May, 2020

DOI: 10.16078/j.tribology.2019145

供油量对对数滚子弹流润滑特性的影响研究

*
孙浩洋 , 张洪信
(青岛大学 机电工程学院，山东 青岛 266071)

摘 要: 针对现有的凸度设计研究没有考虑供油量因素的现状，研究了供油量对对数滚子弹流润滑特性的影响，指
出：在轴向中部，对数滚子的乏油润滑特性与无限长线接触弹流的乏油润滑特性相似；在轴向端部，当供油量较小
时，膜厚较小且轴向颈缩不明显；随供油量的增加，膜厚沿滚子轴线方向逐渐由中部向端部增大，轴向颈缩逐步建
立，直至形成膜厚的端部闭合效应达到充分供油润滑. 在供油量由乏油到充分供油的变化过程中，压力的边缘效应
趋于显著. 因此，充分供油条件下的凸度设计结果不能直接用于乏油工况，乏油时需要的凸度量将小于充分供油润
滑的凸度量.
关键词: 弹流; 有限长线接触; 对数滚子; 乏油; 凸度设计
中图分类号: TH117.2 文献标志码: A 文章编号: 1004-0595(2020)03–0346–07

Oil Supply in EHL Performance for the Logarithmic
Profile Roller

*
SUN Haoyang , ZHANG Hongxin

(College of Mechanical and Electronic Engineering, Qingdao University, Shandong Qingdao 266071, China)
Abstract: Because the factors of oil supply are not taken into account in current crowning design, the influence of oil
supply on the elastohydrodynamic lubrication characteristics of logarithmic roller was studied. It was concluded that in
the middle of the roller in the axis directions, the lubrication characteristics of logarithmic roller were similar to those of
infinite line contact under elastohydrodynamic lubrication. At the axial end, when the oil supply was low, the film
thickness was low and the axial oil film neck shrinkage was not obvious. With the increase of oil supply, the film
thickness increased gradually from the middle to the end along the axis direction of the roller, and the axial oil film neck
shrinkage was gradually established until the end closure effect of the film thickness took into effect,. Therefore, full oil
lubrication was reached. The edge effect of pressure tended to be significant in the process from oil starvation to oil
enrichment. Therefore, the results of crowning design under fully oil conditions can not be directly applied to oil-
starvation conditions, and the crowning value needed in oil-starvation conditions was less than that of fully oil
lubrication.
Key words: EHL; finite line contact; logarithmic profile roller; oil starvation; crowning design

线接触副通常工作在润滑状态下，因承载能力 子之间，凸轮及其滚子从动件之间等，属于有限长弹
大，所以在工程中应用广泛，如滚子轴承的滚道与滚 流润滑的研究范畴. WYMER等 的开创性工作指出：
[1]

Received 6 August 2019, revised 9 November 2019, accepted 27 December 2019, available online 28 May 2020.
*Corresponding author. E-mail: haoyangnew@163.com, Tel: +86-532-85953626.
The project was supported by the National Natural Science Foundation of China (50905090, 51575286), Shandong Provincial
Natural Science Foundation, China(ZR2014EEM031) and Shandong Provincial Key Research and Development Program, China
(2017GGX50106).
国家自然科学基金项目(50905090,51575286)，山东省自然科学基金项目(ZR2014EEM031)和山东省重点研发计划项目
(2017GGX50106) 资助.