| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a laser-arc hybrid welding head capable of performing stable laser-arc hybrid welding by always keeping constant distances between a laser beam condensing head and an arc torch, between the laser beam condensing head and a weld base material, and between the arc torch and the weld base material, even when deformation, strain, or inclination of the weld base material relative to a welding line are generated and a plate thickness varies. <P>SOLUTION: The laser-arc hybrid welding head includes: a roller support frame 5 being arranged substantially in parallel to a welding line direction and turnably supporting at least two copying rollers 4 or more, which roll on the plate surface of a weld base material W along the welding line direction; a movable frame 7 swingably supporting the roller support frame 5 along the welding line direction; a precisely linear guide 9 guidingly supporting the movable frame 7 in the vertical direction; and a spring 8 energizing the roller support frame 5 in the plate surface direction of the weld base material W with a predetermined load. A laser beam condensing head 1 and an arc welding torch 2 are attached to roller support frame 5 so as to be positioned on the welding line. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
