| 摘要 |
PURPOSE:To always perform stable electrification for movement and motion of a wire electrode, by providing a ring-shaped electrifier so as to surround forward and return path parts of the wire electrode. CONSTITUTION:A ring-shaped electrifier 5, being fixed by supporting members 6, is provided so as to surround forward and return path parts of a wire 1, and the wire electrode 1, having predetermined tension, moves being brought into forced contact with an internal surface of the ring by force spreading outside of the ring 5 through guides 7, 8 in supply and winding sides. The electrifier 5 is electrified through a lead wire 9 from a machining power supply. A shaft 10, supporting a guide 2, is shuttle turned by a turning head, and the wire electrode 1 performs electric discharge machining of form shape rotating the guide 2. |
