多次电火花线切割电极丝温度场与切缝流场分析

doi:10.16731/j.cnki.1671-3133.2017.02.002

现代制造工程 ›› 2017, Vol. 437 ›› Issue (2): 8-13.doi: 10.16731/j.cnki.1671-3133.2017.02.002

多次电火花线切割电极丝温度场与切缝流场分析

范圣耀^1,3, 曾文萱¹, KamlakarP.Rajurkar², 张秋菊³, 陈海卫³

1 无锡职业技术学院,无锡 214121
2 美国内布拉斯加州大学林肯分校,林肯 68588
3 江南大学机械工程学院,无锡 214122

收稿日期:2016-06-13 出版日期:2017-02-28 发布日期:2018-01-08
作者简介:范圣耀,工学博士,主要研究方向为机械动态分析与优化2014年在美国内布拉斯加州林肯大学做访问学者1年,发表文章二十余篇,被SCI、EI检索8篇
E-mail:shengyao_fan@sina.com
基金资助:
国家自然科学基金青年科学基金项目(51205166)

Analysis of wire electrode temperature fields and kerf fluid flow for multi-cutting in WEDM

Fan Shengyao^1,3, Zeng Wenxuan¹, Kamlakar P.Rajurkar², Zhang Qiuju³, Chen Haiwei³

1 Wuxi Institute of Technology,Wuxi 214121,Jiangsu,China
2 University of Nebraska-Lincoln,Lincoln NE 68588,USA
3 School of Mechanical Engineering,Jiangnan University,Wuxi 214122,Jiangsu,China

Received:2016-06-13 Online:2017-02-28 Published:2018-01-08

摘要/Abstract

摘要： 针对目前高速多次电火花线切割电极丝形位变化异常问题;通过建立多次电火花线切割电极丝的表面平均热流密度模型,对脉冲宽度、峰值电流和电极丝热流密度关系进行了分析,提出多次电火花线切割应采用窄脉冲宽度高峰值电流观点;在此基础上,通过建立多次电火花线切割切缝三维模型,对电极丝温度场和切缝流场进行了数值模拟分析。结果表明,工作液切缝入口压力对电极丝横截面温度分布有显著影响;工作液在冲进切缝时速度衰减很快。研究结果对稳定多次电火花线切割电极丝形位具有一定指导意义。

关键词: 多次电火花线切割, 电极丝, 切缝流场, 数值分析

Abstract: To solve the instability problem of multi-cutting wire electrode space position in High Speed Wire Electrical Discharge Machining (HS-WEDM),firstly,the surface heat flow density model of wire electrode is established,the relationships among,and wire electrode heat flux density are discussed.A new view is proposed that it is very important to apply narrow pulse width and high current in multi-cutting.Based on these,the wire electrode temperature fields and gap fluid flow are studied by building a 3D kerf model.The results show that the kerf inlet pressure of working fluid have a significant impact on the temperature field distribution of wire electrode,and the velocity of working fluid decrease is very large at kerf inlet.The results have guiding significance for stabilizing multi-cutting wire electrode space position.

Key words: multi-cutting in WEDM, wire electrode, kerf fluid flow, numerical analysis

中图分类号:

TG661

范圣耀, 曾文萱, KamlakarP.Rajurkar, 张秋菊, 陈海卫. 多次电火花线切割电极丝温度场与切缝流场分析[J]. 现代制造工程, 2017, 437(2): 8-13.

Fan Shengyao, Zeng Wenxuan, Kamlakar P.Rajurkar, Zhang Qiuju, Chen Haiwei. Analysis of wire electrode temperature fields and kerf fluid flow for multi-cutting in WEDM[J]. Modern Manufacturing Engineering, 2017, 437(2): 8-13.

多次电火花线切割电极丝温度场与切缝流场分析

Analysis of wire electrode temperature fields and kerf fluid flow for multi-cutting in WEDM

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