WIRE ELECTRIC DISCHARGE MACHINING DEVICE

PROBLEM TO BE SOLVED: To feed and take out a workpiece to and from a machining bath without any interference with a machining head by providing a machining head elevator means for feeding the machining head only in the direction free from a restriction due to a guide rail. SOLUTION: An electric discharge machining process ends, when machining heads 60 and 60 descends on the operation of machining head elevator mechanisms 53 and 53, and a wire reaches the bottom of a workpiece W. Then, the machining heads 60 and 60 are made to ascend on the operation of the machining head elevator mechanisms 53 and 53, and moved outside a machining bath 41. In this case, a connector 55c is detached to cut a connection between a wire feed part 58 and a wire travel system. In addition, a machining guide unit 52 is moved along guide rails 51a and 51b, thereby taking out the workpiece W from the machining bath 41.