离轴多反射镜系统支撑结构的设计与装调

梅贵; 翟岩; 苗健宇; 浦前帅

doi:10.3788/OPE.20152308.2280

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离轴多反射镜系统支撑结构的设计与装调

微纳技术与精密机械 | 更新时间：2020-08-12

- 离轴多反射镜系统支撑结构的设计与装调
- Design and alignment of support structure for off-axis multi-mirror system
- 光学精密工程 2015年23卷第8期页码：2280-2287
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所,吉林长春,中国,130033
- 作者简介：
- 基金信息：
  
  国家自然科学基金资助项目(No.61108066)()
- DOI：10.3788/OPE.20152308.2280
  中图分类号： V447.3;TH703
- 收稿日期：2014-03-27，
  
  修回日期：2014-04-09，
  
  纸质出版日期：2015-08-25
- 稿件说明：
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梅贵, 翟岩, 苗健宇等. 离轴多反射镜系统支撑结构的设计与装调[J]. 光学精密工程, 2015,23(8): 2280-2287

MEI Gui, ZHAI Yan, MIAO Jian-yu etc. Design and alignment of support structure for off-axis multi-mirror system[J]. Editorial Office of Optics and Precision Engineering, 2015,23(8): 2280-2287
梅贵, 翟岩, 苗健宇等. 离轴多反射镜系统支撑结构的设计与装调[J]. 光学精密工程, 2015,23(8): 2280-2287 DOI： 10.3788/OPE.20152308.2280.

MEI Gui, ZHAI Yan, MIAO Jian-yu etc. Design and alignment of support structure for off-axis multi-mirror system[J]. Editorial Office of Optics and Precision Engineering, 2015,23(8): 2280-2287 DOI： 10.3788/OPE.20152308.2280.

摘要

针对离轴多反射式空间相机设计了一种胶接桁架支撑结构。采用T700碳纤维复合材料制造桁架杆

钛合金材料制造杆接头

J133环氧树脂胶作为黏合剂

桁架杆两端的钛合金接头作为相机各组件的接口。给出了装调和胶接的辅助设备及相应的方法和步骤:即利用工装进行预装调

确定杆接头位置;然后通过抹胶完成正式装调

利用定位销钉实现杆接头复位;最后在室温下固化5~7天

拆除工装和销钉后桁架装调完毕。有限元分析和力学振动试验表明

固化完成的桁架一阶谐振频率优于90 Hz

所支撑镜头的一阶谐振频率优于70 Hz。对力学试验前后桁架的各反射镜接口平面度进行了测量

结果显示其最大相对偏差为5.3%

平面度均优于0.15 mm。得到的结果表明该桁架的刚度及尺寸稳定性均满足设计要求。

Abstract

A support structure with an adhesive truss was designed for a space camera with off-axis multi-mirror systems. The struts of this truss were manufactured with T700 made of carbon fiber composites

fittings were manufactured with titanium alloys

the adhesive was J133 epoxy resin and casting titanium fittings were bonded on both ends of the truss struts to provide interfaces for other subassemblies of the camera. The methods and steps for assist alignment equipment and gluing the subassemblies were described particularly. Firstly

preliminary assembly and alignment were done to ensure the precise locations of struts and fittings using the assistance equipment. Then

the formal alignment was performed with the help of locating pins

and the struts and fittings were restored in the correct initial positions and bonded with adhesives. Finally

the structure was solidified at room temperature for 5-7 days

and the assembly and alignment were finished after dismantling the assistance equipment and pins.The results of finite element analysis and vibration test indicate that the first-order natural frequencies of the truss and the lens supported by the truss are more than 90 Hz and 70Hz

respectively. Interfaces of mirror subassemblies were measured before and after vibration tests

and the results show that the flatness has been reached to 0.15 mm and the maximum relative error of interface flatness is 5.3%. The conclusion is that the stiffness and dimensional stability of the truss well meet the design requirements.

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Keywords

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