| 摘要 |
PURPOSE:To perform accurate welding in a short time without using a special jig by providing a welding means freely movably near both sides in the lengthwise direction of a work mounted on a lower die. CONSTITUTION:The nozzles 81 set at the point of a C axis mobile body are moved in the directions of axes X, Y, and Z and rotated in the directions of axis A and B and, further, moved in the directions of axis C. The laser beam oscillated by a laser beam oscillator body 23 is made incident on working heads 51R, 51L and condensed by a condensing lens, the welding part of the work for laser welding is irradiated with the laser beam from the nozzles 81. The work is mounted on the lower die 15 and the lower die 15 is raised to an upper die 19 to bend the work. The heads of two nozzles 81 are moved and approaches from both end sides of the work to the directions of axes X, Y, Z, moved in the directions of axes A, B and, further, the nozzles 81 are moved in the direction of axis C to be positioned at a prescribed amount of gap. When the clearance enters a prescribed range, the work is irradiated with the laser beam from the nozzles 81, and welded. |
