正交磁场对电火花单脉冲放电间隙的影响

中国机械工程

正交磁场对电火花单脉冲放电间隙的影响

贾建宇;王燕青;杨胜强;李文辉

太原理工大学机械工程学院，精密加工山西省重点实验室，太原，030024

出版日期:2017-08-10 发布日期:2017-08-07
基金资助:
国家自然科学基金资助项目（51605323）；
山西省自然科学基金资助项目（2014011026-3）；
山西省研究生教育创新项目（2017SY029）
National Natural Science Foundation of China （No. 51605323）
Shanxi Provincial Natural Science Foundation of China （No. 2014011026-3）

Investigation of Discharge Gap in Orthogonal Magnetic Field Assisted Dry Single-spark EDM

JIA Jianyu;WANG Yanqing;YANG Shengqiang;LI Wenhui

Key Laboratory of Precision Machining of Shanxi Province,College of Mechanical Engineering, Taiyuan University of Technology,Taiyuan,030024

Online:2017-08-10 Published:2017-08-07
Supported by:
National Natural Science Foundation of China （No. 51605323）
Shanxi Provincial Natural Science Foundation of China （No. 2014011026-3）

摘要/Abstract

摘要： 通过普通电火花单脉冲放电（EDM）与磁场辅助电火花单脉冲放电（MF-EDM）放电间隙对比试验，分析得出不同磁感应强度、开路电压、放电电容及电极外伸端长度对磁场辅助电火花加工放电间隙的影响规律。试验发现：随着磁感应强度的增大，放电间隙增大；开路电压和放电电容对放电间隙的影响较小；随着电极外伸长度的增大,放电间隙变小。最后对试验数据进行部分析因分析，得出磁场辅助电火花加工中影响放电间隙的主要因素为磁感应强度、电极外伸长度及其交互耦合作用。

关键词: 电火花加工, 正交磁场, 单脉冲放电, 放电间隙

Abstract: The experiments for comparing the discharge gaps in EDM and MF-EDM were conducted. Then the effects of magnetic field strength, open circuit voltage, capacitance and extension length of toolelectrode on discharge gaps were analyzed.The experimental results show that the discharge gaps increase with the increases of the magnetic field strengths. The open-circuit voltages and discharge capacitances do not have significant effects on the discharge gaps. In addition, the increases of the electrode extension lengths lead to the decreases of discharge gaps. Finally, the fractional factorial analysis of the experimental data shows that the magnetic field strengths, the extension lengths of toolelectrodes and their interaction are the main factors that affect the discharge gaps in MF-EDM.

Key words: electric discharge machining (EDM)；orthogonal magnetic field；single-spark discharge, discharge gap

中图分类号:

TG661

贾建宇;王燕青;杨胜强;李文辉. 正交磁场对电火花单脉冲放电间隙的影响[J]. 中国机械工程.

JIA Jianyu;WANG Yanqing;YANG Shengqiang;LI Wenhui. Investigation of Discharge Gap in Orthogonal Magnetic Field Assisted Dry Single-spark EDM[J]. China Mechanical Engineering.

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