Abstract: A wire electric discharge machining apparatus wherein workpiece and a wire supported by a pair of guides are moved relative to each other in an X-axis direction and a Y-axis direction, one of the guides being moved relative to the other guide in two directions in a horizontal plane for performing a machining operation. The apparatus comprises the pair of guides, a frame, rails mounted on a column, a U-axis moving unit, and a V-axis moving unit. One of the guides is mounted on the frame. The V-axis moving unit on which the other guide is mounted is mounted movably on the U-axis moving unit in parallel with the Y-axis. The frame and the U-axis moving unit are arranged in alignment with the rails.

Abstract: A drawing system in a wire-cut electrodischarge machine having two rectilinear motion devices arranged at right angles on a base for moving a workpiece and a wire relatively to each other, comprising a writing device, a cylindrical drawing mount supported rotatably, and a motion converter for converting linear movement into rotational movement, the drawing mount being connected via the motion converter to one of the rectilinear motion devices while the writing device is connected to the other of the rectilinear motion devices.