Patent ID: 6509538
Filing Date: 2003-01-21
Classification: B23H

Abstract:
A wire-cut electric discharge machine in which a wire electrode is suspended between upper and lower wire guide devices, the lower wire guide device being movable relative to the workpiece in a horizontal X-Y plane formed by orthogonal X and Y axes, comprising:a stationary machine frame; a saddle provided on the machine frame; an X axis linear motor for moving the saddle in the X axis direction; a lower arm, extending in the direction of the Y axis the lower wire guide device being attached to the lower arm; a ram, positioned on the saddle, the lower arm being attached to the ram; a Y axis linear motor for moving the ram in the Y axis direction; and wherein the X axis linear motor comprises a row of magnets fixed to the machine frame and an electromagnet fixed to a lower surface of the saddle, and the Y axis linear motor comprises an electromagnet fixed to an upper surface of the saddle and a row of magnets fixed to the ram.