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    • 66. 发明授权
    • Automatic wire extension method
    • 自动线延法
    • US5057663A
    • 1991-10-15
    • US459801
    • 1990-05-10
    • Hiroshi Kinoshita
    • Hiroshi Kinoshita
    • G07G1/12B23H7/10
    • B23H7/102
    • An automatic wire extension method capable of effecting reliable and smooth wire extension regardless of the size of the diameter of an initial hole and even with use of an inexpensive apparatus, such that during the wire extension through an initial hole having a normal diameter, when a wire electrode is fed while a machining fluid is injected toward a workpiece (50) from a wire extension nozzle (120) attached to an upper wire guide (30) and set apart from the workpiece, the wire electrode is reliably threaded into the initial hole (51) and a wire passage of a three-point support guide (72) accommodated in a lower wire guide, due to a wire guiding function provided by the machining fluid jet. A wire extension through a small-diameter initial hole, when a wire extension nozzle (120) having a nozzle hole (125) with a diameter smaller than that of the initial hole (51) is attached to the upper wire guide, and the wire electrode is fed through the nozzle with the nozzle positioned close to the workpiece and with the supply of the machining fluid interrupted, the wire electrode is threaded into the small-diameter machining hole close to the nozzle, and then into the wire passage of the lower wire guide due to a wire guiding function provided by the initial hole.
    • PCT No.PCT / JP89 / 01019 Sec。 371日期1990年5月10日 102(e)日期1990年5月10日PCT提交1989年10月4日PCT公布。 出版物WO90 / 03862 日期:1990年04月19日。一种能够实现可靠且平滑的电线延伸的自动电线延伸方法,而不管初始孔的直径如何,甚至使用便宜的装置,使得在通过初始孔的电线延伸期间 具有正常直径的情况下,当从附接到上部线引导件(30)并且与工件分离的线材延伸喷嘴(120)向工件(50)注入机加工液体时,进给线电极时,线电极 由于由机械流体射流提供的导丝功能,可靠地拧入初始孔(51)和容纳在下导线器中的三点支撑引导件(72)的线通道。 当具有直径小于初始孔(51)直径的喷嘴孔(125)的电线延伸喷嘴(120)附接到上导线器时,通过小直径初始孔的电线延伸部分 电极通过喷嘴进给,喷嘴位于工件附近,并且随着加工液的供应中断,线电极被拧入靠近喷嘴的小直径加工孔中,然后进入下部的钢丝通道 导线由于导线引导功能由初始孔提供。