Patent ID: 6369343
Filing Date: 2002-04-09
Classification: B23H

Abstract:
An electrical discharge machining apparatus for machining a workpiece having a plurality of features, said electrical discharge machining apparatus comprising:a single workpiece fixture for holding said workpiece; a first machining head arranged to machine a first feature into said workpiece, said first machining head comprising: a ram slidingly supported with respect to said workpiece fixture so as to be moveable toward and away from said workpiece fixture, and at least one electrode mounted on said ram, and an electrode holder supported with respect to said workpiece fixture so as to be moveable toward and away from said workpiece fixture, said electrode holder being located on a side of said workpiece fixture opposite from said ram, and at least one electrode mounted on said electrode holder, wherein said ram and said electrode holder are drivingly connected to each other; and a second machining head arranged to machine a second feature into said workpiece.