| 摘要 |
PURPOSE:To prevent a wire electrode from breaking due to generation of heat, by forming a fluid path inside an electrifying member and jetting cooling fluid to flow. CONSTITUTION:Electrifying members 3 of a wire electrode form contact surfaces 3a in external surfaces while fluid paths 3b inside said members. The contact surface, providing an electrifiable hard material of TiC, Wc, TaC, etc., improves wearing resistance. A machine, jetting cooling fluid to flow from pipes 4 in the fluid paths 3b of the electrifying members 3 and maintaining the member 3 continually in a cooled condition, enables the wire electrode 1 to be electrified by a large machining current from a machining power supply 6. If the cooling fluid supplied from the pipe 4 uses machining fluid, the machine enables the fluid path 3b to be used serving also as a supply nozzle of the machining fluid by placing the fluid path 3b facing toward the machined part of a work 2. |
