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    • 3. 发明授权
    • Method and apparatus for fast hole electrical discharge machining
    • 快速孔放电加工的方法和装置
    • US5614108A
    • 1997-03-25
    • US568711
    • 1995-12-07
    • Michael J. HabelLarry A. Peterson
    • Michael J. HabelLarry A. Peterson
    • B23H1/04B23H9/14
    • B23H1/04B23H9/14
    • A fast hole drilling EDM electrode and a more efficient apparatus and method for electrical discharge machining using the electrode. The electrode has an electrically conductive body with a leading end or tip and a length of relatively uniform non-circular cross-section that is operatively adapted to provide a dielectric flush path between the electrode body and the hole being machined in the workpiece. At least one dielectric supply bore is formed lengthwise through the body. The one or more supply bores connect a dielectric exit at the leading end of the body with a dielectric entrance located distally therefrom. This electrode is operatively adapted for being rotated during the machining process and for its non-circular cross-section to form a hole with a circular cross-section, when so rotated. During machining, a suitable dielectric fluid is supplied to the dielectric entrance of the electrode under sufficient pressure to force the dielectric through the one or more supply bores and out the dielectric exit to flush the eroded material through the dielectric flush path and out of the hole being drilled. With the present invention, a hole in a workpiece can be machined at faster rates, while still maintaining the surface quality and dimensional precision expected from an EDM apparatus and method.
    • 一种快速钻孔EDM电极和一种更有效的使用电极进行放电加工的设备和方法。 电极具有导电体,其具有前端或尖端以及相对均匀的非圆形横截面的长度,其可操作地适于在电极体和被加工的工件中的孔之间提供电介质齐平路径。 至少一个电介质供应孔沿纵向形成穿过本体。 一个或多个供应孔将主体前端的电介质出口与位于其远端的电介质入口连接。 该电极可操作地适于在加工过程中旋转,并且其非圆形横截面在旋转时形成具有圆形横截面的孔。 在加工过程中,在足够的压力下,将合适的电介质流体供应到电极的电介质入口,以迫使电介质通过一个或多个供给孔并从电介质出口排出,以将侵蚀的材料冲洗通过电介质齐平路径并从孔 正在钻 利用本发明,可以以更快的速度加工工件中的孔,同时仍保持从EDM装置和方法预期的表面质量和尺寸精度。