大口径球面光学镜片高速加工工艺研究  

Study on High efficiency machining technology of large-diameter spherical optical lens

作　　者：卢宏炎[1] LU Hongyan(Henan Polytechnic Institute,Nanyang 473009,China)

机构地区：[1]河南工业职业技术学院,河南南阳473009

出　　处：《光学技术》2023年第4期463-468,共6页Optical Technique

摘　　要：大口径镜片由于其面积大、重量重,加工质量难以保证,且生产效率极低,严重限制了此类产品的发展。查阅国内外科技文献,极少涉及大口径光学镜片相关加工技术研究。目前一般采用的工艺方案还是传统的加工方法,生产质量难以保证,且生产效率极低。口径在Φ200~300mm的球面光学镜片的高速加工工艺,采用镜片进行主动旋转运动,模具随镜片旋转而从动运动的工艺方式。为得到稳定的加工面型,对表面成型原理进行了分析,并对实际生产过程中的工艺因素进行了研究。大口径球面光学镜片加工,铣磨采用立式铣磨机加工,工艺时间为30~60s左右;精磨采用固着磨料金刚石丸片分两道砂W14和W7配套进行,工艺时间分别定为30s和20s左右;抛光模具采用聚氨酯抛光片粘接而成,采用氧化铈抛光粉,工艺时间为300s左右。将所加工的镜片进行面型检测,用ZYGO轮廓仪测得镜片的PV值为0.227λ,RMS为0.024λ,达到了比较理想的加工效果。Because of its large area,heavy weight,processing quality is difficult to guarantee,and the production efficiency is extremely low,which seriously limits the development of such products.Consulting the domestic and foreign scientific and technical literature,The research on processing technology of large-aperture optical lens is seldom involved.At present,the commonly used process is still the traditional processing method,the production quality is difficult to guarantee,and the production efficiency is extremely low.High-speed processing technology of spherical optical lens with diameter of something 200mm ~ something 300mm process adopts the process of fixing the lens on the main shaft to carry out the active rotation movement,and the mold is on the top,and the mold moves according to the rotation of the lens.In order to obtain a stable surface profile,the principle of surface forming was analyzed,and the technological factors in the actual production process were studied.Processing of large diameter spherical optical lens,Milling adopts vertical milling machine for processing,The processing time is about 30~60s;The fine grinding is processed by fixed abrasive diamond pellets,Divided into two sand W14 and W7 matching,The processing time is about 30s and 20s respectively;The polishing mould is made of polyurethane polishing sheet.The processing time is about 300s.The processed lens is tested for the shape,PV is 0.227λ,RMS is 0.024λ.And the ideal processing effect is achieved.

关 键 词：大口径 高速加工 光学工艺 成型 玻璃镜片 

分 类 号：TH704[机械工程—仪器科学与技术]