| 基于极间流场模型分析的高速走丝电火花线切割技术 |
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| 引用本文： | 刘志东,王振兴.基于极间流场模型分析的高速走丝电火花线切割技术[J].上海交通大学学报,2011,45(1):61-0065. |
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| 作者姓名： | 刘志东 王振兴 |
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| 作者单位： | （南京航空航天大学 机电工程学院， 南京 210016）
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| 基金项目： | 江苏省自然科学基金项目(BK2008393) |
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| 摘 要： | 提出一种简化的电火花线切割极间流场模型，分析了平板长度及其运动速度和缝隙宽度对压差流和剪切流的影响，以及复合后的间隙流场，通过对高速走丝电火花线切割机附加共轴式高压喷嘴，在高能量切割条件下，实验对比了以剪切流为主的单一浇注极间供液方式与以复合流动为主并辅以高压喷液的复合极间供液方式的切割效率和表面质量.结果表明：压差流与剪切流的复合，有利于改善高能量切割的极间流场状况；复合供液方式可明显改善单一浇注极间供液方式的状况，最高切割效率约为220 mm2/min，增幅达20%，且其表面基本没有烧伤，从而验证了压差流与剪切流的复合效果.
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| 关 键 词： | 电火花线切割 流场 极间状态 切割效率 表面质量 |
Research on High Speed Wire-Cut Electrical Discharge Machine Based on Analysis of Inter-electrode Flow |
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| LIU Zhi-dong,WANG Zhen-xing.Research on High Speed Wire-Cut Electrical Discharge Machine Based on Analysis of Inter-electrode Flow[J].Journal of Shanghai Jiaotong University,2011,45(1):61-0065. |
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| Authors: | LIU Zhi-dong WANG Zhen-xing |
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| Institution: | (College of Mechanical and Electrical Engineering, Nanjing University of
Aeronautics and Astronautics, Nanjing 210016, China)
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| Abstract: | A simplified inter-electrode flow model of wire-cut electrical discharge machine was proposed.The effect of the plate length,velocity and gap width respectively on pressure-difference flow and shear flow was investigated.The compound gap flow formed by combining the pressure-difference flow and shear flow was analyzed.By adding coaxial nozzle and adopting high energy,a test was done to compare the cutting efficiency and surface quality of the single casting fluid supply dominated by shear flow with that of ... |
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| Keywords: | wire-cut electrical discharge machine(WEDM) flow gap condition cutting efficiency surface quality |
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