Patent ID: 8975552
Filing Date: 2015-03-10
Classification: B23H

Abstract:
1. A plate workpiece holder for holding a plurality of plate workpieces used for a wire electric discharge machine, in which the wire electric discharge machine relatively moves a wire electrode stretched between upper and lower wire guides with respect to the plurality of plate workpieces stacked on a workpiece stage so as to machine the plurality of plate workpieces stacked, the workpiece holder for holding the plurality of plate workpieces stacked comprising: a cylindrical member in which the plurality of plate workpieces are held in a stacked state and which has an inner circumference surface where concave sections corresponding to a machining start point and a machining end point are provided; lid members that are mounted on an upper end and a lower end of the cylindrical member to press the plurality of plate workpieces; and a workpiece stage mount member which is secured to the workpiece stage and which has an insertion hole in which the cylindrical member is inserted and housed.