| 摘要 |
<p>A wire piece recovery apparatus in a wire cut electric discharge machine, wherein waste wire pieces formed when a wire is cut off prior to an automatic wire connection are recovered without fail so as not to disturb the wire connection and the electric discharge machining. After the wire is cut off with a cutter (110) provided on an arm assembly of a wire connecting unit (80), the arm assembly is returned to a retracted position in a state where waste wire pieces formed by the cut-off are held between a spring member provided on a movable nozzle extension and a stationary nozzle extension. A suction nozzle (101) fixed to the main body (81) of the wire connecting unit is supplied with pressurized air to produce negative pressure in the suction nozzle and the vicinity of the bottom thereof. When the wire pieces are released, the wire pieces sucked into the nozzle are received in a receiver (102) installed on the main body of the wire connecting unit.</p> |
