Micro electrical discharge machining of small hole in TC4 alloy  

作　　者：LI Mao-sheng CHI Guan-xin WANG Zhen-long WANG Yu-kui DAI Li 李茂盛;迟关心;王振龙;王玉魁;戴立(Key Laboratory of Micro-Systems and Micro-Structures Manufacturing of Ministry of Education,Harbin Institute of Technology,Harbin 150001,China;School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]Key Laboratory of Micro-Systems and Micro-Structures Manufacturing of Ministry of Education,Harbin Institute of Technology,Harbin 150001,China [2]School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150001,China

出　　处：《Transactions of Nonferrous Metals Society of China》2009年第S02期434-439,共6页中国有色金属学报（英文版）

基　　金：Project(2006AA04Z323)supported by High-tech Research and Development Program of China。

摘　　要：Aiming at machining deeply small holes in TC4 alloy,a series of experiments were carried out on a self-developed multi-axis micro electrical discharge machining(micro-EDM)machine tool.To improve machining efficiency and decrease relative wear of electrode in machining deeply small hole in TC4 alloy,many factors in micro-EDM,such as polarity,electrical parameters and supplying ways of working fluid were studied.Experimental results show that positive polarity machining is far superior to negative polarity machining;it is more optimal when open-circuit voltage,pulse width and pulse interval are 130 V,5μs and 15μs respectively on the self developed multi-axis micro-EDM machine tool;when flushing method is applied in micro-EDM,the machining efficiency is higher and relative wear of electrode is smaller.

关 键 词：TC4 alloy micro electrical discharge machining deeply small hole multi-axis micro-EDM machine tool 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]