600mm薄镜面主动光学望远镜轴系结构设计

发布时间：2018-07-03 08:15

本文选题：主动光学望远镜 + 俯仰-方位轴系　；参考：《红外与激光工程》2015年04期

【摘要】：为研究大型望远镜薄镜面主动光学的核心技术,以600 mm望远镜为缩比系统,采用高精度标准轴承设计了具有快速装调、高互换性和便于维护等特点的俯仰-方位轴系结构。俯仰轴系由向心角接触球轴承构成,方位轴系由推力球轴承和双列圆柱滚子轴承构成。采用有限元软件Patran仿真得到了系统的前三阶固有频率和振型。分析了影响轴系回转精度的误差源,采用谐波理论对轴系误差测量结果进行了处理,得到俯仰轴系晃动误差为4.2″,方位轴系晃动误差为9.3″。望远镜在外场观星试验中得到了比较理想的成像效果,验证了轴系结构设计的合理性和正确性,并为中小型望远镜高精度轴系的研制提供了设计依据和技术途径。
[Abstract]:In order to study the core technology of thin mirror active optics for large telescopes, the pit-azimuth shafting structure is designed with high precision standard bearing with high speed adjustment, high interchangeability and easy maintenance with 600mm telescope as shrinkage system. The pitch shaft system is composed of the radial angle contact ball bearing, the azimuth shaft system is composed of the thrust ball bearing and the double row cylindrical roller bearing. The first three natural frequencies and modes of the system are obtained by using the finite element software Patran. The error sources affecting the rotation accuracy of shafting are analyzed. The measurement results of shafting errors are treated by harmonic theory. The results show that the sloshing error of pitching shafting is 4.2 ", and that of azimuth shafting is 9.3". An ideal imaging effect of the telescope is obtained in the field observation experiment, which verifies the rationality and correctness of the shafting structure design, and provides the design basis and technical approach for the development of the high-precision shafting system of the small and medium-sized telescopes.
【作者单位】：中国科学院长春光学精密机械与物理研究所;
【基金】：中国科学院长春光学精密机械与物理研究所三期创新重大研究项目专项资金
【分类号】：TH743

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