Method of and apparatus for welding workpiece

摘要

Scanning welding heads (68a, 68b) are introduced through respective openings of a workpiece (W) into the workpiece (W) by respective welding robots (12a, 12b). When a laser beam (L) is emitted from a laser beam emitting device (16), the laser beam (L) is applied to a beam splitter (36) of one of the welding robots (12a), which reflects about 50 % of the energy of the laser beam (L) and introduces the laser beam (L) into a scanning welding head (68a). The beam splitter (36) passes the remaining 50 % of the energy of the laser beam (L) therethrough. The laser beam (L) that has passed through the beam splitter (36) is reflected by a totally reflecting mirror (38) of another scanning welding head (68b). The scanning welding heads (68a, 68b) apply the laser beam (L) to respective regions in the workpiece (W) to weld the workpiece (W). <IMAGE>