考虑协调接触的圆兜孔圆柱滚子轴承动力学研究  

Research on dynamics of cylindrical roller bearing with circular pockets considering conformal contact

作　　者：刘延斌[1,2] 黄杰 李旭莹 LIU Yanbin;HUANG Jie;LI Xuying(School of Mechatronics Engineering,Henan University of Science and Technology,Luoyang Henan 471003,China;Collaborative Innovation Center of Machinery Equipment Advanced Manufacturing of Henan Province,Henan University of Science and Technology,Luoyang Henan 471003,China)

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003 [2]河南科技大学机械装备先进制造河南省协同创新中心,河南洛阳471003

出　　处：《航空动力学报》2024年第4期251-266,共16页Journal of Aerospace Power

基　　金：国家自然科学基金(52175086)。

摘　　要：针对接触廓形高度密合的滚子-兜孔圆弧面、滚子-兜孔端面、滚子-挡边等协调接触副,基于Winkler弹性基础模型,提出一种协调接触建模方法,然后结合牛顿-欧拉动力学理论,提出考虑协调接触的圆兜孔圆柱滚子轴承的六自由度动力学建模方法,通过与文献结果和实验数据对比,验证了建模方法的有效性,在此基础上仿真研究了保持架质量偏心和内外圈角度不对中对保持架打滑/涡动、滚子打滑/偏歪斜、滚子-兜孔碰撞以及滚子-挡边碰撞的影响,结果表明:保持架质量径向偏心会加剧保持架和滚子的打滑,但有助于提高保持架涡动的稳定性,而轴向偏心会引起滚子的偏歪斜,当轴向偏心与径向偏心叠加时,滚子与兜孔、挡边更易产生边缘碰撞;内外圈角度不对中也容易引起滚子的偏歪斜,以及滚子与兜孔、挡边的边缘碰撞,但可明显降低保持架和滚子的打滑。For the conformal contact pairs such as the roller-circular surface of the pocket,the rollerend face of the pocket,and the roller-rib with highly close contact profiles,based on the Winkler's elastic foundation model,a conformal contact modeling method was proposed;by combining the conformal contact modeling method with the Newton-Euler's dynamics theory,the six degree-of-freedom dynamics modeling method of the bearing with circular pockets considering conformal contact was proposed;and by comparing with both the reference results and the experiment data,the proposed dynamics modeling method was validated.On this basis,influences of both the mass eccentricity of the cage and the angle misalignment of the inner and outer rings on the cage slip/whirl,the roller slip/skew/tilt,the roller-cage collision and the roller-rib collision were studied by use of dynamics simulation.The results showed that the radial mass eccentricity of the cage could aggravate the cage slip and the roller slip,but contributed to improve the cage whirl stability,and the axial mass eccentricity may cause the roller skew/tilt;when the axial mass eccentricity was combined with the radial mass eccentricity,the roller-pocket peripheral collision and the roller-rib peripheral collision easily appeared.Secondly,the angle misalignment of the inner and outer rings was more likely to cause the roller skew/tilt,and the roller-pocket peripheral collision and the roller-rib peripheral collision,but it can significantly reduce the cage slip and the roller slip.

关 键 词：圆柱滚子轴承 圆兜孔 协调接触 六自由度动力学模型 动态性能 

分 类 号：V233.45[航空宇航科学与技术—航空宇航推进理论与工程] TH133.33[机械工程—机械制造及自动化]