| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent secondary troubles due to air shutters by furthermore suppressing the deposit of spatters, etc. on a protection glass for protecting a laser optical system. <P>SOLUTION: A laser machining head has a laser welding head 1 tilted such that the welding direction makes an acute angle with the optical axis B of the laser beam L on the front side of the welding direction. A protection pipe 7 is arranged in the space formed between the laser beam irradiating aperture 5 of the laser welding head 1 and a workpiece W to be welded in approximately parallel with the workpiece W to be welded so as not to interfere with the laser beam L. A first air shutter 10 is formed in the protection pipe 7. In addition, a second air shutter 11 is formed so as to cross the first air shutter 10, and so as to cause an air flow directing diagonally downward from above the protection pipe 7 toward the welding direction. The spattering direction of the spatters is shifted by the synergistic effect of the first and second air shutters 10, 11. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
