大口径薄型光学零件弹性夹具优化及夹持变形研究  

Study on Optimization of Elastic Fixture and Clamping Deformation of Large Aperture Thin Optical Components

作　　者：游津京 谢启明[2] 康杰 沈维辉 张万清 王一卓 You Jinjing;Xie Qiming;Kang Jie;Shen Weihui;Zhang Wanqing;Wang Yizhuo(School of Mechanical and Electrical Engineering,Changchun University of Science and Technology,Changchun 130022,China;Kunming Institute of Physics,Kunming 650223,China;不详)

机构地区：[1]长春理工大学机电工程学院,长春市130022 [2]昆明物理研究所,昆明市650223 [3]云南北方驰宏光电有限公司

出　　处：《工具技术》2022年第2期38-42,共5页Tool Engineering

摘　　要：装夹技术是单点金刚石切削技术(SPDT)的重要组成部分,夹具设计对光学零件的加工精度有重要影响,大口径薄型光学零件装夹时更易产生夹持变形,零件下盘后变形恢复导致面形精度不可控,难以满足加工要求。本文采用有限元仿真分析法,引入正交试验的思路,对夹具设计进行仿真和统计学分析,研究弹性夹具各参数、夹持力和零件径厚比等因素对大口径薄型零件夹持变形的影响程度,为弹性夹具的设计提供理论指导。Clamping technology is an important part of single point diamond turning(SPDT),the fixture design has an important impact on the machining accuracy of optical parts.For large aperture thin optical components,deformation is more likely to occur during clamping.After the part is removed from the fixture,the deformation is restored,which easily leads to an uncontrollable surface accuracy,so it is hard to meet the machining accuracy requirements.This paper studies the optimization of elastic fixture and clamping deformation of large aperture thin optical components by finite element simulation analysis method and orthogonal design method.The results show that the factors such as the parameters of elastic clamp,the clamping force and the diameter-thickness ratio of components have different influence effects on the clamping deformation of large aperture thin optical components,in addition,the influence proportion of each factor on the clamping deformation is obtained by regression analysis,which can provide theoretical guidance for the design of the elastic fixture.

关 键 词：单点金刚石切削 弹性夹具 大口径薄型光学零件 夹持变形 夹具优化 

分 类 号：TG751[金属学及工艺—刀具与模具] TH161.3[机械工程—机械制造及自动化]