大口径光学元件装夹转运结构设计及分析  

Design and analysis of clamping transfer structure for large aperture optical element

作　　者：李月 徐猛 王骁 朱建平 连克难 陈家川 LI Yue;XU Meng;WANG Xiao;ZHU Jian-ping;LIAN Ke-nan;CHEN Jia-chuan(Institute of Machinery Manufacturing Technology,CAEP,Mianyang 621999,China)

机构地区：[1]中国工程物理院机械制造工艺研究所,四川绵阳621999

出　　处：《激光与红外》2020年第3期279-284,共6页Laser & Infrared

基　　金：中物院创新发展基金项目(No.PY2019071);四川省高新技术领域重点研发项目(No.2018GZZ0110);中物院超精密加工重点实验室基金项目(No.ZZ15008)资助。

摘　　要：为了实现大口径光学元件的安全装夹、转运,通过光学元件开槽与不开槽两种装夹方式的分析,得出开槽夹紧转运方式将带来微裂纹、应力集中、成本高等缺陷,提出了利用摩擦力克服光学零件的重力和惯性力的低应力装夹转运方案。通过对光学元件低应力夹紧结构设计,并利用有限元分析方法,得到不开槽装夹方式下,光学元件的最大主应力为1.11 MPa,最大切应力为0.73 MPa,远低于光学元件破坏的强度极限,且受力均匀,无应力集中现象。In order to realize the clamping and transshipment of large aperture optical element,through the analysis of two types of clamping methods,it is concluded that the slotting clamping method brings defects such as microcracks,stress concentration and high cost.A low-stress clamping transport scheme that using friction overcomes the gravity and inertial forces of optical element is proposed.Through the design of the low-stress clamping structure and the use of finite element analysis method,the maximum main stress of the optical element is 1.11 MPa and the maximum shear stress is 0.73 MPa,which is much lower than the breaking strength limit of the optical element.The force is uniform,no stress concentration.

关 键 词：大口径光学元件 应力集中 低应力夹紧 有限元分析 

分 类 号：TH745[机械工程—光学工程]