ECCENTRICITY-PREVENTING DEVICE CAPABLE OF PREVENTING ECCENTRIC COMBINATION OF SCREW HOLE OF NUT AND FASTENING HOLE OF PANEL OF NUT WELDING MACHINE BY PREVENTING THE FASTENING HOLE OF PANEL AND THE SCREW HOLE OF THE NUT FROM BEING ECCENTRICALLY WELDED

摘要

PURPOSE: An eccentricity-preventing device capable of preventing eccentric combination of screw hole of nut and fastening hole of panel of nut welding machine is provided to improve reliability of manufactures by restraining eccentrical welding between the fastening hole of panel and the screw hole of the nut and by making the replacement of parts unnecessary. CONSTITUTION: An eccentricity-preventing device capable of preventing eccentric combination of a screw hole(14a) of a nut(14) and a fastening hole(16a) of a panel(16) of a nut welding machine comprises a fixing part(132) having a receiving groove(132a) to the upper part; a panel support part(134) covering the receiving groove and supporting the panel; a panel guide member(140) having a longitudinal through path(148) in the center; a nut guide member(150) coaxial with the panel guide member to be inserted in the longitudinal through path; and a pressure-applying unit making upper sides of the nut guide member and the panel guide member keep exposed through the panel support part and the panel guide member by supplying predetermined pressure to the inside of the receiving groove. The receiving part is fixed to the upper end of a second electrode. The panel support part is combined to the upper part of the fixing part. A part of the lower side of the panel guide member is received in the receiving groove. A part of the upper side of the panel guide member is exposed through the panel support part to decide the position of the panel. A part of the lower side of the nut guide member is received in the receiving groove. A part of the upper side of the nut guide member is exposed to decide the position of the nut.