818 電極消耗を利用したマイクロ放電加工(マイクロ加工)(OS.1 生産加工・工作機械)

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タイトル別名
  • 818 Micro-EDM of Tapered Holes and Rods utilizing Electorode-Wear

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This paper discribes a new method for micro-EDM drilling which utilizes the wear of a rod electrode. In this method, the polality of the rod electrode is positive, and the rotating rod electrode is fed into the block electrode with a feed rate of several tens times higher than the normal one. Since the circumferential region of the rod electrode wears with a much higher rate than the central region, the end of the rod electrode is sharpened in a few minutes. At the same time, a cone-like micro-hole with sharp bottom shape is generated in the block electrode automatically.

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