| 摘要 |
PURPOSE: A super drill equipped with an electrode change device is provided to automatically quickly change an electrode, thereby improving work efficiency. CONSTITUTION: An electrode change device comprises an electrode supporting part(410) and an electric discharge processing part(420). The electrode supporting part is installed on the bottom surface of a condition setting part(200) and allowed to rotate. The electrode supporting part comprises a plurality of fingers in which electrode rods are respectively inserted. The electric discharge processing part is installed on the lower side of a moving body(300), provided with the electrode rods inserted in the fingers, and processes a work piece while selectively changing the electrode rods.
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