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

DENG Rong; YUAN Hai-tao; HU Ting-liang; SUN Xiao-jin; YANG Jun; FU Yan-long; HU Ming; SUN S

doi:10.3788/OPE.20162406.1407

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

Micro/Nano Technology and Fine Mechanics | 更新时间：2020-08-13

- Life test of solid-lubricated bearing assembly for scan mechanism of space camera
- Optics and Precision Engineering Vol. 24, Issue 6, Pages: 1407-1412(2016)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20162406.1407
  CLC： V416.5;TH133.33
- Received：10 January 2016，
  
  Revised：15 February 2016，
  
  Published：25 June 2016
- 稿件说明：
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邓容, 袁海涛, 胡亭亮等. 空间相机扫描机构固体润滑轴承组件的寿命试验[J]. 光学精密工程, 2016,24(6): 1407-1412

DENG Rong, YUAN Hai-tao, HU Ting-liang etc. Life test of solid-lubricated bearing assembly for scan mechanism of space camera[J]. Editorial Office of Optics and Precision Engineering, 2016,24(6): 1407-1412
邓容, 袁海涛, 胡亭亮等. 空间相机扫描机构固体润滑轴承组件的寿命试验[J]. 光学精密工程, 2016,24(6): 1407-1412 DOI： 10.3788/OPE.20162406.1407.

DENG Rong, YUAN Hai-tao, HU Ting-liang etc. Life test of solid-lubricated bearing assembly for scan mechanism of space camera[J]. Editorial Office of Optics and Precision Engineering, 2016,24(6): 1407-1412 DOI： 10.3788/OPE.20162406.1407.

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MoS

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

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。

Abstract

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

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

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.

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Keywords

references

樊幼温. 红外地平仪固体润滑轴承组件的寿命试验[J]. 空间科学学报,1996,(16):71-76. FAN Y W. Life test of a solid-lubricated ball bearing assembly used for satellite infrared earth sensor[J]. Chinese Journal of Space Science,1996,(16):71-76. (in Chinese)

周明辉.空间相机快门装置加速寿命试验方法研究[D]. 武汉:华中科技大学硕士论文, 2012. ZHOU M H. Research on accelerated life test method for shutter apparatus in space camera [D]. Wuhan:Huazhong University of Science and Technology, 2012. (in Chinese)

上官爱红,穆猷,李治国,等. 空间环境对MoS2基薄膜固体润滑运动部件寿命的影响[J]. 光学精密工程,2014,22(12):3264-3271. SHANGGUAN A H, MU Y, LI ZH G, et al.. Effect of space environment on working life of solid-lubricated rotating parts [J]. Opt. Precision Eng., 2004,22(12):3264-3271. (in Chinese)

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SHANKARA A, MENEZES P L, SIMHA K R Y,et al.. Study of solid lubrication with MoS2 coating in the presence of additives using reciprocating ball-on-flat scratch tester[J]. Sadhana, Part 3,2008,33(3):207-220.

BOHNER J J, CONLEY P L. On the torque and wear behavior of selected thin film MOS2 lubricated gimbal bearings[R]. New York, NASA,1988.

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ZARETSKY E V. Tribology for aerospace applications [M]. USA STLE publication, 1997.

MURRAY S F, HESHMART H, FSARO R. Accelerated testing of space mechanisms[R]. New York, USA. NASA, 1995.

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