多孔质电极的深孔电火花加工性能  

Performance of Porous-Electrode in Deep Cavity Electrical Discharge Machining

作　　者：蒋毅[1] 孔令蕾 平雪良[1] 李其[1] 

机构地区：[1]江南大学机械工程学院,江苏省食品先进制造装备技术重点实验室,江苏无锡214122

出　　处：《上海交通大学学报》2015年第10期1457-1463,共7页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金项目(51205169)资助

摘　　要：通过制备符合电火花加工要求的多孔质电极并搭建实验系统,对多孔质电极在深孔条件下的电火花加工性能进行了实验研究.结果表明,在工件上表面加工较浅的型腔时,多孔质电极与实体电极的材料去除率相差不大;而在工件上表面加工深孔时,多孔质电极能够以不抬刀的方式进行加工,使其加工效率得到提高,且加工速度不受加工深度的影响;对于较大深度的半封闭复杂型面加工,采用多孔质电极不仅能够提高其粗加工效率,而且可以利用冲液以避免碳柱的产生.A series of experiments were conducted to investigate the performance of electrical discharge machining（EDM）with porous electrodes.It was found that compared with solid electrodes,the material removal rate（MRR）is lower when processing a shallow cavity using porous electrode.In deep cavity EDM processing,tool lifting is not necessary when using porous electrode and inner-flushing.The machining efficiency can be improved,while not influencing machining depth.The results of deep semi-enclosed complex cavity EDM show that the roughing machining efficiency can be greatly raised.

关 键 词：电火花加工 多孔质电极 复杂型腔 冲液 

分 类 号：TG484[金属学及工艺—焊接]