WIRE ELECTRIC DISCHARGE MACHINING APPARATUS

摘要

A wire electric discharge machining apparatus that machines a workpiece by using a wire supported between a lower arm and an upper arm. The apparatus includes a surface plate that has a vacant inner area in which the wire moves and supports part of the workpiece with an outer area thereof. The apparatus further includes a bellows that extends through a side surface of a casing of a machining bath, enclosing part of the lower arm, wherein a first end of the bellows that is on a side of the machining bath is attached to the lower arm so that the bellows does not get in under the inner area, at whatever position the wire machines the workpiece.

主权项

1. A wire electric discharge machining apparatus which machines a workpiece by using a wire supported between a lower arm and an upper arm, comprising:
a surface plate, having a vacant inner area, for placing the workpiece thereon by supporting part of the workpiece with an outer area thereof, wherein the wire moves in the inner area; a machining bath having a casing for holding a machining liquid for placing the surface plate in the casing, wherein the casing is supplied with the machining liquid to a position for machining the workpiece, wherein the lower arm extends through a side surface of the casing, and wherein by moving a horizontal relative position between the lower and upper arms and the casing, a horizontal relative position between the wire and the workpiece is moved; and a bellows extending through the side surface and enclosing part of the lower arm, wherein a first end of the bellows that is on a side of the machining bath is attached to the lower arm so that the bellows does not get in under the inner area, at whatever position the wire machines the workpiece.