磁力研磨法光整内凹槽底面的工艺参数优化  

Optimization of process parameters for finishing the bottom surface of inner groove by magnetic grinding

作　　者：陈法宇 孙玉利[1] 王燎原 张鹏 盛一 西川尚宏 CHEN Fayu;SUN Yuli;WANG Liaoyuan;ZHANG Peng;SHENG Yi;NISHIKAWA Naohiro(College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Nanjing Xinghe Precision Intelligent Manufacturing Research Institute,Nanjing 211106,China;Iwate University,Morioka 020-8551,Japan;Nanjing Huaceda Precision Machinery Co.,Ltd.,Nanjing 211106,China)

机构地区：[1]南京航空航天大学机电学院,南京210016 [2]南京星合精密智能制造研究院有限公司,南京211106 [3]岩手大学,日本盛冈020-8551 [4]南京华测达精密机械有限公司,南京211106

出　　处：《金刚石与磨料磨具工程》2022年第2期216-222,共7页Diamond & Abrasives Engineering

基　　金：南京市科技计划项目—国际联合研发项目(202002047);南京航空航天大学2020年度研究生创新试验竞赛培育项目;南京航空航天大学2021年度研究生科研与实践创新计划项目(xcxjh20210511)。

摘　　要：为提高磁力研磨法光整异形波导管内凹槽底面的研磨效率和研磨效果,解决其难光整问题,采用正交试验法研究钢珠直径、加工间隙、磁极盘转速3个主要工艺参数对表面粗糙度降低率ΔR_(a)的影响,并采用极差分析和方差分析法对工艺参数进行分析和优化。试验确定的最佳工艺参数组合是钢珠直径为1.0 mm,加工间隙为1 mm,磁极盘转速为800 r/min。采用最佳工艺参数对试样进行研磨抛光,加工30 min后试样表面的大量突起被去除,表面粗糙度值Ra从初始的11.059μm降至1.513μm,粗糙度降低率ΔR_(a)达到最大值86.3%,试样的表面质量得到有效改善。To improve the efficiency and effect of magnetic grinding the bottom surface of inner groove and seek a solution of finishing inner groove of the special-shaped waveguide,the orthogonal test was used to investigate the effect of three major process parameters,namely steel grit size,process gap and magnetic pole rotating speed,on the surface roughness reduction rateΔR_(a).Meanwhile,the process parameters were analyzed and optimized by the range analysis method and the variance analysis method.The best process parameters were confirmed:steel ball diameter of 1.0 mm,process gap of 1 mm,and magnetic pole rotation speed of 800 r/min.It demonstrated that after 30 minutes of processing,many protrusions on the surface were removed and the surface morphology was improved.The roughness value R_(a)was reduced from the initial 11.059μm to 1.513μm with the maximum reduction of 86.3%,significantly improving the sur-face quality.

关 键 词：磁力研磨 正交试验 内凹槽底面 工艺参数优化 粗糙度降低率 表面形貌 

分 类 号：TG58[金属学及工艺—金属切削加工及机床] TH161.14[机械工程—机械制造及自动化]