ワイヤ放電加工用高性能ワイヤ電極の開発に関する研究（第４報）―ワイヤ表面の高抵抗層が放電加工特性に及ぼす影響―

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タイトル別名
  • Development of Coated Wire Electrode for High-Performance WEDM (4th Report)-Effects of high-resistance layer on wire electrode on WEDM characteristics-
  • ワイヤ ホウデン カコウヨウ コウセイノウ ワイヤ デンキョク ノ カイハツ ニ カンスル ケンキュウ ダイ4ホウ ワイヤ ヒョウメン ノ コウテイコウソウ ガ ホウデン カコウ トクセイ ニ オヨボス エイキョウ

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The purpose of this study is to develop a new type of coated wire electrode for fine-wire EDM. A piano wire with a very high tensile strength is coated with an electrically conductive brass layer to achieve high-speed and high-precision wire EDM. In our previous studies, by using a thin wire of 50 μm in diameter, the thickness and quality of the brass coating layer were optimized, and the effect of surface unevenness was also discussed. In this paper, the effects of the oxidation of the wire surface and high-resistance layer on the wire electrode were experimentally investigated. It was found that more sparks occur selectively in front of the wire and less sparks on the side surface of wire with the high-resistance layer on the wire surface. Consequently, the kerf width decreased and the removal rate increased with the optimum thickness of the layer. Also, the occurrence of a short circuit between the wire and the machined surface was reduced because of presence of a high-resistance layer on the wire surface.

収録刊行物

  • 電気加工学会誌

    電気加工学会誌 45 (109), 64-70, 2011

    一般社団法人 電気加工学会

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