绞合电极丝电火花线切割加工极间流场研究  

Study on Inter-electrode Flow Field for Stranded-wire Electrical Discharge Machining

作　　者：杨超[1] 刘志东[1] 庞昊聪 田宗军[1] 

机构地区：[1]南京航空航天大学机电学院,江苏南京210016

出　　处：《电加工与模具》2016年第5期32-36,共5页Electromachining & Mould

基　　金：国家自然科学基金资助项目(51575271)

摘　　要：为了解决电火花线切割加工在高效切割中极间工作介质补充不足的问题,研究开发了一种新型的电火花线切割加工用绞合电极丝。利用Fl uent流体力学软件,计算了绞合电极丝和常规电极丝在切缝中的流场体积流率和速度场。结果表明:绞合电极丝的极间流场体积流率比常规电极丝高约46%,绞合电极丝极间工作液的周向速度分量能促进加工区的工作液补充和蚀除产物排出,所设计的实验也在一定程度上验证了上述结论。In order to solve the problem of working medium supply shortage in efficient wire electrical discharge machine （WEDM）,a new type of electrical discharge machining wire-stranded-wire was developed. Using Fluent fluid mechanics software,the volume flow rate and flow field velocity in the cutting seam with the stranded-wire electrode and regular wire electrode were calculated. The results show that the volume flow rate with the stranded-wire electrode is about 46% higher than that with the regular wire electrode. And when using the stranded-wire electrode,the circunfferential velocity component of the working liquid can promote working medium supplement and metal chip removal in the cutting seam ,the designed experiment also proves the conclusion partly.

关 键 词：电火花线切割加工 绞合丝 FL uent软件 流场 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]