磁流变抛光流场瞬变过程响应时间  

Response Time of Flow Transient Process of Magnetorheological Finishing

作　　者：杨航 宋书飘 张帅 甘欢 黄文[2,3] 何建国[2] Yang Hang;Song Shupiao;Zhang Shuai;Gan Huan;Huang Wen;He Jianguo(School of Engineering,Zunyi Normal University,Zunyi,Guizhou 563006,China;Institute of Mechanical Manufacturing Technology,China Academy of Engineering Physics,Mianyang,Sichuan 621900,China;Key Laboratory of High-Precision Machining Technology,China Academy of Engineering Physics,Chengdu,Sichuan 610200,China)

机构地区：[1]遵义师范学院工学院,贵州遵义563006 [2]中国工程物理研究院机械制造工艺研究所,四川绵阳621900 [3]中国工程物理研究院超精密加工技术重点实验室,四川成都610200

出　　处：《激光与光电子学进展》2020年第3期203-209,共7页Laser & Optoelectronics Progress

基　　金：国家“高档数控机床与基础制造装备”科技重大专项“巨型激光装置光学元件超精密制造系统示范工程”课题(2017ZX04022001);教育部重点实验室开放基金课题(黔教合KY字[2017]385);贵州省科技计划项目(黔科合平台人才[2018]5784);贵州省教育厅青年科技人才成长项目(黔教合KY字[2017]249)。

摘　　要：提出一种磁流变抛光瞬变过程多相颗粒流模型,获得了瞬变过程在宏观、介观、微观三个层次的力学关联,从而建立了基于三向在位力学信号的瞬变过程表征方法,在位、同步、动态地测定了磁流变抛光的三向力学信号,解决了毫米尺度空间下磁流变抛光液-固界面的在位测量问题。采用屈服强度为220kPa、宾汉黏度为0.07Pa·s的高去除率抛光液对φ50mm的BK7超精密平面元件进行磁流变抛光实验,测量得到磁流变抛光流场瞬变响应时间为700ms。In this paper,a multiphase particle flow model of the transient process of magnetorheological finishing(MRF)has been proposed.The mechanical relations of the transient processes are obtained at macroscopic,mesoscopic,and microscopic levels.A transient process characterization method based on three-direction in situ mechanical signals has also been proposed.The three-direction mechanical signals of the MRF are synchronously and dynamically measured in situ.The problem of in situ measurements of the liquid-solid interface of the MRF in millimeter-scale space is solved.The high removal rate finishing fluid with a yield strength of 220 kPa and a Bingham viscosity of 0.07 Pa·s is used to conduct the MRF experiment on a BK7 ultra-precision planar element ofφ50-mm,and the transient response time of the MRF flow is identified to be 700 ms.

关 键 词：光学设计 强激光系统 超精密光学加工 磁流变抛光(MRF) 瞬变过程 在位测量 响应时间 

分 类 号：TH164[机械工程—机械制造及自动化]