多工况滚子摩擦副弹流润滑实验装置的设计

发布时间：2018-01-16 06:19

  本文关键词：多工况滚子摩擦副弹流润滑实验装置的设计　出处：《润滑与密封》2016年04期 　论文类型：期刊论文

  更多相关文章： 弹流润滑 线接触 多工况实验 凹陷

【摘要】：为了更好地观测滚子摩擦副在不同卷吸速度下的弹流润滑现象,开展有限长线接触弹流润滑油膜成膜机制的实验研究,对原有的线接触光干涉实验装置进行改进,将原有的曲柄滑块机构设计成丝杠推杆,从而将旋转运动转变成直线运动。实验表明:改进后的实验装置可以有效地实现滚子卷吸运动速度大小和运动规律的变化,可以观测到非常清晰的油膜干涉图像,在滚子接触区域油膜呈现出较为明显的弹流特征,可为线接触弹流的理论研究提供可靠的实验数据。在改进后的实验装置上,对滚子在突然加速的工况下进行了实验研究,由于步进电机的特点,在突然加速的瞬间有极短的停顿,导致挤压效应较为明显,油膜被封在滚子的接触区域内形成凹陷,出现封油现象,当滚子卷吸速度增加时,油膜厚度也会随之增加。
[Abstract]:In order to better observe the elastohydrodynamic lubrication of roller friction pairs at different entrainment speeds, the film forming mechanism of finite line contact elastohydrodynamic lubricating oil film was studied experimentally. The original experimental device of linear contact light interference is improved, and the original crank slider mechanism is designed as a lead screw push rod. The experimental results show that the improved device can effectively change the speed and law of roller entrainment motion. A very clear image of oil film interference can be observed, and the oil film in the roller contact area shows obvious elastohydrodynamic characteristics. It can provide reliable experimental data for the theoretical study of linear contact elastohydrodynamic. In the improved experimental device, the roller is studied under the condition of sudden acceleration, because of the characteristics of stepping motor. At the moment of sudden acceleration, there is a very short pause, which leads to the obvious extrusion effect. The oil film is sealed in the contact area of the roller to form a depression, and the oil sealing phenomenon occurs, when the roller entrainment speed increases. The thickness of the oil film will also increase.
【作者单位】： 常州大学机械工程学院;
【基金】：江苏省自然科学基金项目(BK2011238) 国家“十二五”重点科研项目(XXXT-125-GH-148) 江苏省前瞻性科技联合研究项目(BY2015027-09)
【分类号】：TH87
【正文快照】： )j縥縥縥縥縥縥縥，

本文编号：1431909