光学自由曲面的加工参数对光散射的影响  

Influence of processing parameters of optical free-form surface on light scattering

作　　者：李迎春[1] 李欣 李吉祥 孙江波[2] 王增路 张壮壮 刘非 LI Yingchun;LI Xin;LI Jixiang;SUN Jiangbo;WANG Zenglu;ZHANG Zhuangzhuang;LIU Fei(School of Mechatronic Engineering,Changchun University of Technology,Changchun 130012,China;Engineering&Mechanics,Jilin Communications Polytechnic,Changchun 130012,China)

机构地区：[1]长春工业大学机电工程学院,吉林长春130012 [2]吉林交通职业技术学院机械工程学院,吉林长春130012

出　　处：《长春工业大学学报》2022年第6期635-644,共10页Journal of Changchun University of Technology

基　　金：国家自然科学基金青年科学基金项目(52205442);吉林省科技厅自由探索类基础研究项目(YDZJ202201ZYTS654);吉林省科技厅重点研发项目(20210203154SF);吉林省微纳与超精密制造重点实验室(20140622008JC);吉林省高性能制造及检测国际科技合作重点实验室(20220502003GH)。

摘　　要：椭圆振动车削加工是实现光学自由曲面高精度加工的有效方法之一。文中通过构建椭圆振动车削加工光学自由曲面的表面形貌模型与以Harvey-Shack散射理论为基础的光学性能模型,研究分析了椭圆振动车削加工过程中的进给量和刀尖圆弧半径对自由曲面光学元件光散射的影响。研究结果表明,随着进给量a_(f)的增大和刀尖圆弧半径r的减小,加工后表面粗糙度将会增大,像面能量将更加分散,光学零件的成像质量将降低。Elliptical vibration cutting is one of the effective methods to realize high-precision machining of optical free-form surfaces.In this paper,we study and analyze the influence of feed rate and corner radius on light scattering of free-form surface optical elements in the process of elliptical vibration turning by constructing surface topography model of optical free-form elements and optical performance model based on Harvey-Shack scattering theory.The results show that with the increase of feed rate a_(f) and the decrease of corner radius r,the roughness of machined surface will increase,the image energy will be more dispersed,and the imaging quality of optical parts will decrease.

关 键 词：光学自由曲面 椭圆振动车削 进给量 刀尖圆弧半径 Harvey-Shack散射理论 

分 类 号：TG663[金属学及工艺—金属切削加工及机床]