电火花深孔加工中螺旋电极对间隙流场影响研究  

Exploring Effect of Spiral Electrode on Gap Flow Field in Deep-hole Electrical Discharge Machining

作　　者：常皓 王文建 王昕妍 刘宇[4] 张文超[4] CHANG Hao;WANG Wenjian;WANG Xinyan;LIU Yu;ZHANG Wenchao(Department of Mechanical Engineering,Zhengzhou Technical College,Zhengzhou 450121,China;Shaanxi Railway Institute,Weinan 714000,Shaanxi,China;Zhengzhou Metro Group Co.,Ltd.,Zhengzhou 450000,China;School of Mechanical Engineering,Dalian Jiaotong University,Dalian 116028,Liaoning,China)

机构地区：[1]郑州职业技术学院机械工程系,郑州450121 [2]陕西铁路工程职业技术学院,陕西渭南714000 [3]郑州地铁集团有限公司,郑州450000 [4]大连交通大学机械工程学院,辽宁大连116028

出　　处：《机械科学与技术》2021年第4期586-591,共6页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金面上项目(51875074);辽宁省自然科学基金指导计划项目(20180550425);河南省科技厅科技攻关项目(212102210314)。

摘　　要：针对电火花深孔加工过程中排屑问题,提出采用螺旋电极改善加工间隙的流场环境。为探究螺旋电极的螺旋角和电极的旋转方向对排屑产生的影响,利用Fluent软件建立不同螺旋角电极下间隙流场的流体动力学模型,分析了螺旋电极不同螺旋角及不同旋转方向对间隙流场及电蚀产物运动的影响。结果表明,采用45°螺旋角的螺旋电极进行加工其排屑效果最好,螺旋电极正向旋转加工更有利于电蚀产物排出加工间隙。Spiral electrode is considered to improve the flow field environment of machining gap on chip removal in Electrical Discharge Machining(EDM)of deep holes.To explore the helical angle and direction of rotation have an influence on chip removal in spiral electrode.In this paper,the fluid dynamics model that different helix Angles of electrodes is established by Fluent simulation software.It is analyzed that the effect of different spiral Angle and rotation direction on the flow field and debris removal.Simulation result shows that the effect of debris removal that use of spiral electrode with 45°angle is best.The positive rotation machining of spiral electrode is more advantageous to removal debris from machining gap.

关 键 词：电火花深孔加工 螺旋电极 间隙流场 FLUENT 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]