高速向心推力球轴承温度场分析

摘要

轴承作为重要热源,对系统工作时的温度上升产生重要影响.分别采用热网络法和有限体积法,对高速向心推力球轴承的稳态温度场进行分析计算.比较两种算法的优劣,获得其稳态温度分布场,总结出诸如转速、预紧载荷等因素对轴承温升的影响规律,为合理选择轴承参数,提高其工作可靠性提供理论依据.%The bearing is considered as the important heat source, It has great influence on the temperature rise during working . In this paper, the transient and steady temperature fields of the high-speed centripetal thrust ball bearing are analysised based on thermal network analysis & finite volume method. Ultimately, steady-state temperature fields are built. As compared with these two methods, this paper sums up the influence law caused by the speed, load and other factors, in order to select the perfect bearing parameter and provide the theoretical basis of the working reliability.