空间相机扫描机构固体润滑轴承组件的寿命试验  

Life test of solid-lubricated bearing assembly for scan mechanism of space camera

作　　者：邓容[1] 袁海涛 胡亭亮[1] 孙小进[1] 杨军[2] 伏彦龙[2] 胡明[2] 孙胜利[1] 翁立军[2] 

机构地区：[1]中国科学院上海技术物理研究所,上海200083 [2]中国科学院兰州化学物理研究所固体润滑国家重点实验室,甘肃兰州730000

出　　处：《光学精密工程》2016年第6期1407-1412,共6页Optics and Precision Engineering

基　　金：武器装备预研基金资助项目(No.9140A21041210ZK0702)

摘　　要：开展了固体润滑轴承组件的真空加速寿命试验,以验证固体润滑轴承组件的设计是否满足在轨寿命要求。研究了MoS2基薄膜固体润滑轴承组件在小角度摆动情况下的寿命。试验采用4对轴承模拟在轨±6°连续往复摆动,通过检测轴承组件工作时的摩擦力矩、电机电流和轴承温升判断轴承运行状态。结果显示,寿命试验运行正常,累计摩擦次数为6.2×10^7次。寿命试验后对轴承进行了尺寸精度和旋转精度复测,然后对轴承组件进行了解剖分析。复测结果显示,轴承尺寸精度和旋转精度与试验前一致,轴承润滑状态良好。试验结果验证了固体润滑轴承组件寿命满足在轨任务要求,为其它空间相机小角度摆动的扫描机构固体润滑轴承组件的长寿命设计提供了依据。An accelerated vacuum life test for solid-lubricated bearing assemblies of the scan mechanism in a space camera was performed to obtain their working life.The working life of MoS_2 solid based solid lubrication bearing assembly under a small angle oscillation was researched.The continuous oscillation of 4 pairs of bearings at ±6° was simulated and tested.During the life test,the friction moment,the current of motor and the temperature rise of bearings were inspected to estimate their running states.The experiments show that the life test has run very well,the working life of the bearing assemblies is 6.2×10^7 times.The dimensional precision and running accuracy of the bearings were measured after life test,and then the dissection analysis of the bearing assemblies was also taken.The results indicate that the dimensional precision and running accuracy of the bearings are the same as that of the life test and the lubrication condition of the bearings is good.These results validate that the working life of solid-lubricated bearing assemblies satisfies the requirement of task in orbit.It provides technological supports for the long life design of solid-lubricated bearing assemblies for scan mechanisms of space cameras under smaller angle oscillation.

关 键 词：空间相机 扫描机构 固体润滑轴承 MOS2 摆动 加速寿命试验 

分 类 号：V416.5[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]