Research on the Mechanism of Alternating Temperatures on Space Bearing Preload

摘要：

　　The main purpose of this paper is to research the influence of alternating temperatures on space bearing and to provide theoretical guidance for establishing the model of the preload and determining initial preload.Considering the assembly tolerance of the bearing and the thermal deformation of shaft-bearing system,the prediction model of the preload is established and verified by experiment.The laws are revealed that how the mechanical property changes with the alternating temperatures.As alternating temperatures increasing,the interference of the outer ring decreases and the inner ring increases.Compared with the situation without considering the interference,the variation of the preload is larger when the interference is considered.The preload increases with the axial load increasing.Furthermore,the preload decreases with the initial interference when the alternating temperature is above room temperature.The range of the preload is studied to ensure the reliable operation of the revolute joint in spacecraft mechanism.

关键词： Alternating temperatures Bearing Preload Failure Reliability

作者: Fengping Ning Jiantao Yao Ruiqin Li Yongsheng Zhao

作者单位: School of Mechanical and Power Engineering, North University of China,Taiyuan 030051, China Parallel Robot and Mechatronic System Laboratory, Yanshan University,066004 Qinhuangdao, China

会议类型: 国际会议

会议名称: 2016中国机构与机器科学国际会议

会议地点: 广州

会议语种:英文

页码: 597-608

在线出版日期: 2016-12-15（万方平台首次上网日期，不代表论文的发表时间）