电解加工中微细电极尖端效应的实验研究与仿真  

Experimental and Numerical Investigation on the Point Effect of Electrochemical Machining

作　　者：何俊峰[1] 郭钟宁[1] 连海山[1] 何长运 罗红平[1] 

机构地区：[1]广东工业大学机电工程学院,广州510006

出　　处：《组合机床与自动化加工技术》2014年第7期136-138,共3页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家自然科学基金重点资助项目(U1134003)

摘　　要：微细电极在电解加工中会产生尖端效应,致使加工后的微细电极为尖锥状。文章通过分析微细电极电解加工的加工原理及制备流程,对微细电极与辅助电极之间的相对位置进行适当调节,有效的改善了微细电极的尖端效应。试验过程中保持加工电压与电解液溶度不变,研究微细电极与辅助电极在不同加工位置对尖端效应的影响。同时,建立不同电极直径的有限元分析模型,分析相应电极尖端电流密度随相对位置变化的规律。仿真结果能合理有效的解释相对位置的变化对微细电极尖端效应的影响。For the impact of point effect,the micro-electrode is fabricated as cone shape by ECM.In this paper,based on the fundamental analysis of ECM,the relative position between micro-electrode and auxiliary electrode is properly controlled to efficiently reduce limitation of point effect.For all experiments,the voltage and density of electrolyte are set as constant so that the impact of relative position on the point effect can be comprehensive studied.Meanwhile,FEM models with various diameters are set up as well to theoretically investigate the relation between current density and relative position.It turns out the simulation result agree to experiment well.

关 键 词：电解加工 微细电极 电流密度 尖端效应 

分 类 号：TH162[机械工程—机械制造及自动化] TG506[金属学及工艺—金属切削加工及机床]