发明名称 |
Laser beam machining head |
摘要 |
<p>In a laser beam machining head, when a filler wire and an optical axis of a laser beam are arranged coaxially, a convex roof mirror and a concave roof mirror are combined to divide the laser beam into two separate laser beams so that no laser beam is projected onto a filler wire feed pipe. Furthermore, the filler wire is fed from outside the laser beams to a condensing position via a filler wire guide in the spacing between the separate laser beams, or an electrode supported by a water flow pipe or an electrode holding pipe is brought close to the condensing position. Alternatively, a laser beam machining head comprises a dividing optical system for dividing laser light into two separate laser beams, and providing spacing therebetween; a condensing optical system for condensing the separate laser beams into condensed laser light, and projecting it onto a cutting site of an object to be cut; and an inner assist gas nozzle placed between the separate laser beams, a width of an opening of a tip portion of the inner assist gas nozzle being nearly equal to a cutting width. Or the tip opening of the inner assist gas nozzle is slender; or its tip side is inclined, and the angle of inclination is variable; or the relative positions of the inner assist gas nozzle and a workpiece, or the relative positions of the focal position of the condensing optical system and the workpiece are variable independently; or an outer assist gas nozzle surrounding the separate laser beams is provided. <IMAGE></p> |
申请公布号 |
EP1020249(A2) |
申请公布日期 |
2000.07.19 |
申请号 |
EP19990121418 |
申请日期 |
1999.10.27 |
申请人 |
MITSUBISHI HEAVY INDUSTRIES, LTD. |
发明人 |
NAGURA, YASUMI;NAYAMA, MICHISUKE;ISHIDE, TAKASHI;HASHIMOTO, YOSHIO;MICHISHITA, YUKIO;OKIMURA, KOJI;NAGASHIMA, TADASHI;WATANABE, MASAO;AKABA, TAKASHI;SHIMIZU, KATSUSUKE |
分类号 |
B23K26/00;B23K26/06;B23K26/067;B23K26/14;B23K26/16;B23K26/38;(IPC1-7):B23K26/06 |
主分类号 |
B23K26/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|