滚动轴承中滚子偏斜的润滑研究

发布时间：2018-01-17 14:27

本文关键词：滚动轴承中滚子偏斜的润滑研究　出处：《青岛理工大学》2012年硕士论文　论文类型：学位论文

【摘要】：本文主要研究了滚子偏斜对滚动轴承润滑的影响。全文共包括四个部分，即陶瓷球轴承的热弹流润滑分析；滚子偏斜的等温弹流润滑分析；滚子偏斜的热弹流润滑分析；偏斜滚子副的实验研究。首先，利用多重网格法和逐列扫描法，得到了陶瓷球轴承的点接触热弹性流体动力润滑完全数值解，并且对两种轴承做了比较。结果表明：第一，轴承的载荷与转速会对接触区的压力、膜厚和温度产生影响。第二，轴承的热效应是不能忽略的。第三，在相同压力和转速的情况下，，陶瓷球轴承相比全钢轴承而言，油膜要厚，温度要低，具有一定的优越性。其次，基于偏斜滚子与无限大平面间形成的有限长线接触模型，考虑了滚子力矩平衡，给出了在等温弹流润滑条件下偏斜角、速度、载荷与偏距对油膜压力和膜厚分布的影响。在此基础上，分析了圆柱滚子轴承中偏斜滚子与内外圈接触的等温弹流润滑情况。讨论了油膜压力和膜厚随偏斜角、轴承转速、滚子所受载荷、滚子尺寸等的变化情况。结果表明，滚子偏斜易引起滚子与套圈间的偏磨，对润滑不利。然后，在等温基础上，考虑热效应，分别对偏斜滚子与无限大平面接触和轴承内外圈接触的热弹流润滑问题进行了分析。给出了油膜压力、膜厚和温度在不同条件下的分布情况。分析表明，在滚子偏斜条件下，热效应对滚动轴承的润滑性能更加不利，因此，在滚子偏斜条件下热效应是不能忽略。最后，为了验证理论结果，利用设有特殊调倾装置的滚子副油膜测量试验机，完成了滚子偏斜条件下的油膜光干涉实验。给出了滚子在不同偏斜角、卷吸速度和载荷条件下的油膜分布情况，并进行了相应的分析，验证了理论结果的正确性。
[Abstract]:This paper mainly studies the influence of roller deflection on rolling bearing lubrication. The full text includes four parts: Thermal Elastohydrodynamic Lubrication Analysis of ceramic ball bearing, Isothermal Elastohydrodynamic Lubrication Analysis of roller skew, thermal elastohydrodynamic lubrication analysis of roller skew, and experimental research of skewed roller pair.
First of all, and the column scanning method using multigrid method, the solution of thermal elastohydrodynamic lubrication numerical ceramic ball bearing contact, and two kinds of bearings were compared. The results showed that: first, load and speed of the bearing of contact pressure, film thickness and temperature affect second. The thermal effect, bearing can not be ignored. In third, at the same pressure and speed, compared to the full ceramic ball bearing steel bearing, oil film thick, low temperature, has certain advantages.
Secondly, the formation of finite line contact model and the infinite plane deflection roller on the basis of the consideration of the roller torque balance, are given in the Isothermal EHL condition of angle, speed, load and offset on the oil film pressure and film thickness distribution. On this basis, analysis of the situation of Isothermal EHL cylindrical roller bearing deflection in contact with the inner ring and the outer ring of the roller. The oil film pressure and film thickness with the deflection angle, roller bearing speed, load, the change of roller size. The results show that the roller deflection caused by eccentric wear between the roller and the ring, on the lubrication disadvantage.
Then, on the basis of isothermal, considering thermal effect, thermal elastohydrodynamic lubrication of deflection roller and infinite contact plane and the inner and outer rings of bearing contact is analyzed. Given the oil film pressure, film thickness and temperature distribution under different conditions. The results show that, in the roller deflection condition, thermal effect the lubrication performance of rolling bearing more unfavorable, therefore, can not be ignored in the thermal effect of roller deflection conditions.
Finally, in order to verify the theoretical results, roller oil film measurement test machine is equipped with a special device by the regulation, completed under the condition of oil film roller deflection of light interference. Rollers are given in different angle, the volume distribution of oil film absorption speed and load conditions, and analyzed. Verify the correctness of the theoretical results.

【学位授予单位】：青岛理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH133.33

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