用于微喷嘴制作的高效微电火花加工技术  

High efficient micro-EDM manufacturing technology to produce micro-nozzles

作　　者：舒霞云[1] 张鸿海[1] 张丰[1] 谢丹[1] 

机构地区：[1]华中科技大学机械科学与工程学院,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2010年第2期48-51,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50775087)

摘　　要：针对当前微电火花加工中电极制备效率较低的现状,提出了一种高效率的金刚砂轮辅助线电火花磨削加工微电极的方法.设计制作了卧式布局的微电火花加工系统,进行了微细轴和小孔的加工实验.实验对比分析可知,采用金刚砂轮辅助线电火花磨削加工微电极的方法既可以利用传统金钢砂轮磨削的高效率,又可以利用线电极电火花磨削的高精度,从而有效提高微电火花加工微电极的效率,通过实现高精度微喷嘴的高效制作.应用所制作的微喷嘴进行机械冲击式微滴喷射实验,获得了理想的图形与阵列.Micro electrode fabrication is the precondition for micro hole manufacturing, and wire electro-discharge grinding （WEDG） method is inefficient. By combination of traditional diamond grinding wheel with WEDG, a new method for micro electrodes manufacturing is proposed. With the horizontal prototype machine, experiments on wheel grinding, WEDG and the new grinding method for microelectrodes, micro holes and nozzle fabrication are done respectively. Results show that the efficiency of micro electrode fabrication by the new grinding method is improved greatly, compared with traditional WEDG method. Mechanical micro-drop was also finished, in the study, stainless nozzle let jetting experimental study on high viscosity fluid fabricated by micro-EDM （electrical discharge machining） was used.

关 键 词：微电火花 微滴喷射技术 微喷嘴 放电加工 磨削 

分 类 号：TH16[机械工程—机械制造及自动化] V260.1[航空宇航科学与技术—航空宇航制造工程]