| 摘要 |
PURPOSE:To stably obtain high welding quality, to increase welding speed to improve productivity, to secure reliability of a machining head, to minimize restrictions of a jig, etc., to prevent interference and further, to reduce finishing man-hours before secondary machining. CONSTITUTION:When five works 1 which are sheet metal materials are abutted on one another to perform laser beam welding, those works 1 are tack welded and fixed mutually by TIG welding by welding robots 16 on a work base 15, then, the works 1 in a fixed state are carried into a press 11 by a loader 14 and butt parts of those works 1 are subjected to coining by metallic molds for coining based on operation of the press 11. Afterward, the butt parts subjected to coining of those works 1 are subjected to laser beam welding by a laser beam welding machine 12 having the ordinary machining head supplied with a laser beam from a laser beam oscillator 13. |
