A novel method of water bath heating assisted small ball-end magnetorheological polishing for hemispherical shell resonators  

作　　者：Jinchuan TIAN Mingjun CHEN Jian CHENG Henan LIU 

机构地区：[1]State Key Laboratory of Robotics and System,Harbin Institute of Technology,Harbin 150001,China [2]Center for Precision Engineering,Harbin Institute of Technology,Harbin 150001,China

出　　处：《Chinese Journal of Aeronautics》2023年第12期451-460,共10页中国航空学报（英文版）

基　　金：supported by the National Key Research and Development Program of China(No.2022YFB3403600);the National Natural Science Foundation of China(No.52293403);Self-Planned Task of State Key Laboratory of Robotics and System(HIT)(No.SKLRS202204C)。

摘　　要：Hemispherical shell resonator(HSR)is the core component of hemispherical resonator gyro.It is aφ-shaped small-bore complex component with minimum curvature radius less than 3 mm.Thus,traditional polishing methods are difficult to polish it.Small ball-end magnetorheological polishing method can polish the small components with complicated three-dimensional surface and obtain non-destructive surface.Therefore,this method is suitable for polishing HSR.However,the material removal rate of the ordinary small ball-end magnetorheological polishing is low,leading to long polishing time and low output of HSR.To solve this problem,a water bath heating assisted small ball-end magnetorheological polishing method is proposed in this research.The influence rule of processing parameters on the material removal rate is studied experimentally.A set of optimal processing parameters is obtained to maximize the material removal rate.Compared with the ordinary method,the material removal rate of the new method can be improved by 143%.Subsequently,an HSR is polished by the new method.The results show that the polishing time can be reduced by 55%,and the polished surface roughness can reach 7.7 nm.The new method has the great potential to be used in actual production to improve the polishing efficiency of HSR.

关 键 词：Hemispherical shell resonator Magnetorheological fluid temperature Material removal rate Optimization Small ball-end magnetorheological polishing 

分 类 号：V261[航空宇航科学与技术—航空宇航制造工程] TG580.692[金属学及工艺—金属切削加工及机床]