High Speed 3D Milling by Dry EDM
High Speed 3D Milling by Dry EDM
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DOI：
10.1016/s0007-8506(07)60552-6
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
Masanori Kunleda;Y. Miyoshi;Tsutomu Takaya;Nobuhiro Nakajima;Zhanbo Yu;Masahiro Yoshida
中科院分区：
文献类型：
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作者：
Masanori Kunleda;Y. Miyoshi;Tsutomu Takaya;Nobuhiro Nakajima;Zhanbo Yu;Masahiro Yoshida
本文介绍了以气体为工作介质的三维型腔高速电火花铣削加工。在这一新工艺中，熔化的工件材料在高压气流的帮助下从工作间隙中排出并冲出。这种技术的优点是工具电极磨损非常小，材料去除率非常高，特别是当使用氧气时，因为钢工件的氧化非常强烈。实验表明，当工件表面的放电功率密度超过一定阈值时，由于气体与工件材料发生热化学反应，材料去除率显著提高。获得的最大去除率几乎等于用铣床高速铣削淬火钢的去除率。当气体通过管状电极吸入时，加工精度比喷射时好得多。
This paper describes the high speed EDM milling of 3D cavities using gas as the working fluid. In this new process, the molten workpiece material is removed and flushed out of the working gap with the help of high-pressure gas flow. The advantages or this technique are the remarkably small tool electrode wear and the significantly high material removal rate especially when oxygen gas is used due to the extremely strong oxidation of steel workpieces. Experiments showed that the material removal rate increases dramatically when the discharge power density on the wonting surface exceeds a certain threshold due to thermally activated chemical reaction between the gas and workpiece material. The maximum removal rate obtained was almost equal to that of high speed milling of quenched steel by a milling machine. The machining accuracy was considerably better when the gas was sucked through the pipe electrode than Jetted.