基于直流电源的短电弧铣削加工性能研究  

Research on Machining Performance of Short Arc Milling Based on DC Power Supply

作　　者：王翔 周建平[1] 许燕[1] 胡国玉[1] WANG Xiang;ZHOU Jianping;XU Yan;HU Guoyu(School of Mechanical Engineering,Xinjiang University,Urumqi Xinjiang 830047,China)

机构地区：[1]新疆大学机械工程学院,新疆乌鲁木齐830047

出　　处：《机床与液压》2021年第9期71-76,共6页Machine Tool & Hydraulics

基　　金：国家自然科学基金地区科学基金项目(51765063);自治区重点研发计划项目(2018B02009-1);自治区天山雪松计划项目(2018XS01)。

摘　　要：为了探究直流短电弧铣削加工性能,分别以管状镀铜石墨为工具电极,45钢作为工件材料,分析电压、电极转速、加工深度对电极损耗率、材料去除率(MRR)和表面质量的影响规律。试验结果表明:增大电压可以有效提高MRR,但会降低工件表面质量;提高电极转速不仅能够改善工件表面质量,同时还能获得较高MRR;加大铣削深度能够大大提高MRR,但切深过大会使铣削变得困难,当铣削速度不能满足进给率时,会出现撞刀现象,工具电极断裂从而产生台阶面,严重影响工件表面成型质量。In order to explore the machining performance of DC short arc milling,tubular copper-plated graphite was used as the tool electrode and 45 steel was used as the workpiece material.The effects of voltage,electrode speed,and processing depth on the electrode loss rate,material removal rate(MRR)and surface quality were analyzed.The experimental results show that:increasing the voltage can effectively improve the MRR,but it will reduce the surface quality of the workpiece;increasing the speed of the electrode can not only improve the surface quality of the workpiece,but also obtain higher MRR;increasing the milling depth can greatly improve the MRR,but too large cutting depth will make milling difficult;when the milling speed cannot meet the feed rate,a cutter collision phenomenon will occur,and the tool electrode will break to produce a stepped surface,which will seriously affect the workpiece surface forming quality.

关 键 词：直流短电弧铣削加工 表面质量 电极损耗 微观形貌 

分 类 号：TG661[金属学及工艺—金属切削加工及机床]