| 摘要 |
<p>PURPOSE:To prevent dropping of machining speed and occurrence of variation in machining quantity by forming the supply path for reaction gas within an electrode for supplying the entire machining area with reaction gas of constant amount. CONSTITUTION:The conductive thin wire of a wire electrode 3 is provided with a gas supply path 5 within it which extends through it in the longitudinal direction. On the side approximately facing a machined surface 6 of a work 2, multiple squirt holes 7 penetrating through to the gas supply path 5 are provided. The spacings between squirt holes 7 and their diameters are so set that the machining speed be constant in the longitudinal direction of the wire electrode 3. A buffer tank 8 is provided in a supporting bracket 4, and it is fixed to an end part of the wire electrode 3 so that the gas supply path 5 runs through it. The supporting bracket 4 is provided with a gas supply port 9, and the atmosphere gas consisting of reaction gas and inactive gas is supplied in the buffer tank 8 by a gas supply means. Thus, a constant amount of reaction gas is supplied at all times for stabilized machining speed.</p> |
