优化拟静力学模型的主轴轴承动态特性分析  

Dynamic Characteristics Analysis of Spindle Bearing Based on Optimized Quasi-static Model

作　　者：于洁[1,2] 刘忠 邵娟[2] 贺磊 袁伟[1] YU Jie;LIU Zhong;SHAO Juan;HE Lei;YUAN Wei(School of Mechanical Engineering,Shandong University of Technology,Zibo Shandong 255000,China;Shanghai Key Laboratory of Intelligent Manufacturing and Robotics,School of Mechatronic Engineering and Automation,Shanghai University,Shanghai 200072,China;Department of Oncology,Zibo Central Hospital,Zibo Shandong 255000,China)

机构地区：[1]山东理工大学机械工程学院,山东淄博255000 [2]上海大学机电工程与自动化学院,上海市智能制造及机器人重点实验室,上海200072 [3]山东省淄博市中心医院肿瘤科,山东淄博255000

出　　处：《机床与液压》2020年第19期55-64,共10页Machine Tool & Hydraulics

基　　金：上海市高新技术领域资助项目(13521103002);山东省重点研发计划项目(2019GGX104081,2019GGX104033)。

摘　　要：借鉴Jones的球轴承拟静力学研究方法,耦合球滚动体与滚道间的润滑油的影响因素、保持架与球滚动体之间的相互作用,以及保持架与引导套圈之间的动压润滑作用,建立了优化拟静力学分析模型。与Jones的拟静力学模型的仿真结果和实验结果对比显示,所建立的拟静力学模型准确可行。在此基础上,利用所建立的优化拟静力学模型,针对不同工况,对球与滚道间的油膜状况、保持架的受力等轴承的动态特性参数进行了分析。结果表明:转速对球与内、外套圈的油膜厚度的影响大于载荷的影响;在转速从小到大变化时,保持架与球之间的法向载荷、流体动压油膜对保持架的作用力出现由从大到小,逐渐趋于平稳的变化规律;当轴向载荷增大时,则有逐渐减小的趋势。Based on Jones’ method of quasi-statics for ball bearings, an optimized quasi-statics analysis model was established by coupling the influence factors of lubricating oil between ball rolling body and raceway, the interaction between cage and ball rolling body, and the dynamic pressure lubrication between cage and guide ring.Compared with Jones’ classical quasi-statics model simulation results, the established quasi-statics model is accurate and feasible. On this basis, the optimized quasi-statics model was used to analyze the dynamic characteristic parameters of bearings, such as the oil film condition between ball and raceway and the force of the cage, under different working conditions.The results show that the effect of the bearing rotating speed on the oil film thickness between the ball and inner and outer rings is greater than that of load;with the increasing of the bearing rotating speed,the normal load between the cage and the ball is decreasing, and the force exerted by distribution pressure of fluid dynamic pressure on cage is increasing, and both trend to stable gradually.

关 键 词：拟静力学模型 耦合 润滑油 保持架 主轴轴承 动态特性 

分 类 号：V231.1[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]