尺寸效应对工业链传动中润滑行为的影响

The Effect of the Roller Size on the Lubrication Behavior in the Chain Drive

摘要: 为模拟工业链传动中不同型号的套筒和销轴间发生的润滑行为，作者分别进行了实验和理论研究。通过光干涉实验，得到了不同尺寸滚子–盘有限长线接触副的润滑油膜厚度及形状的变化；通过多重网格算法对有限长线接触进行了数值仿真。实验和理论均表明：滚子直径增大，润滑油膜厚度升高。实验结果还揭示当滑动速度增加时，接触区宽度变窄，油膜厚度逐步增加。

Abstract: In order to simulate the lubrication behavior between sleeve and pin in industrial chain drive, the authors have carried out experiments and theoretical studies respectively. Through optical inter-ference experiment, the oil film thickness and shape of the different sizes roller and disk pair are obtained. Numerical simulation of finite line contact is carried out by means of multi-grid algorithm. Results of both experiment and theory show that the thickness of lubricating film increases when the diameter of roller increases. As the sliding speed increases, the width of the contact zone becomes narrower and the thickness of the oil film increases.