Patent ID: 8759708
Filing Date: 2014-06-24
Classification: B23H

Abstract:
1. A wire-cut electric discharge machine having a function of cutting a wire electrode, the wire-cut electric discharge machine comprising: an upper wire guide and a lower wire guide configured to guide the wire electrode on upper and lower sides of a workpiece, respectively; a pair of first wire electrode cutting energizing electrodes provided on an upper side of the upper wire guide on a traveling path of the wire electrode and configured to clamp the wire electrode at a first portion; a pair of second wire electrode cutting energizing electrodes provided on the upper side of the upper wire guide on the traveling path of the wire electrode and on a downstream side of the first wire electrode cutting energizing electrodes and configured to clamp the wire electrode at a second portion; a tensile force imparting part configured to impart a predetermined tensile force to the wire electrode; and a cooling part configured to cool down the first portion wherein the first wire electrode cutting energizing electrodes and the second wire electrode cutting energizing electrodes are configured to energize the wire electrode, and the tensile force imparting part is configured to impart the tensile force to the wire electrode while the wire electrode is being energized by the first wire electrode cutting energizing electrodes and the second wire electrode cutting energizing electrodes.