电蚀产物对微细电火花电极形状损耗影响的实验研究  

Experimental Study on Effects of Debris on Electrode Shape Wear in Micro-EDM

作　　者：李晓鹏[1,2] 王元刚[2] 刘宇[3] 王慧 赵福令[1] LI Xiaopeng;WANG Yuangang;LIU Yu;WANG Hui;ZHAO Fuling(School of Mechanical Engineering, Dalian University of Technology, Dalian, Liaoning, 116024;School of Mechanical Engineering, Dalian University, Dalian, Liaoning, 116622;School of Mechanical Engineering, Dalian Jiaotong University, Dalian, Liaoning, 116028)

机构地区：[1]大连理工大学机械工程学院,大连116024 [2]大连大学机械工程学院,大连116622 [3]大连交通大学机械工程学院,大连116028

出　　处：《中国机械工程》2020年第15期1815-1822,1889,共9页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(51005027);辽宁省自然科学基金资助项目(201602030)。

摘　　要：针对微细电火花加工技术特点,开展电极形状损耗形成机理的研究,设计了开放状态微细电火花加工实验方法,实现电蚀产物浓度的改变;通过实验对比不同加工状态下微细电火花加工电极形状损耗变化、工件表面微观形貌和重熔层情况,系统研究不同电蚀产物浓度作用下电极形状损耗的影响规律;分析微细电极形状损耗的影响机制,总结内凹坑形状变化与电蚀产物的内在关系。研究成果为实现微细电极的形状控制提供了一定的实验及理论依据,达到了提升微细电火花加工质量和加工稳定性的目标。The formation mechanism of electrode shape wear was studied based on the characteristics of micro-EDM technology,where the experimental method of open-state micro-EDM was designed to change the concentration of debris.Through experiments,the influence laws of electrode shape wear under different debris concentrations were systemically investigated by comparing the changes of electrode shape wear,the surface micromorphology and the recast layers of workpieces in micro-EDM under different machining conditions.The influence mechanism of the shape wear of the microelectrodes was analyzed and the intrinsic relationship between the shape change of the craters and the debris was summarized.The results provide an experimental and theoretical basis for the shape control of microelectrodes and achieve the goal of improving the quality and stability of micro-EDM.

关 键 词：微细电火花加工 放电通道 电极形状损耗 电蚀产物 

分 类 号：V261.6[航空宇航科学与技术—航空宇航制造工程]