| 摘要 |
<p>A terminal group (K) for laser beam devices is disclosed, in particular for cutting metal sheets, which includes a support (7a) which holds a nozzle carrier (7), a focusing group (5) situated behind the nozzle carrier (7), washing gas ejection means (20) opening in front of said focusing group (5), and a nozzle (6) fastened to the nozzle carrier (7). The terminal group (K) includes also a frusto-conical insert (8) which reduces the section through which solid or gas particles pass when they are produced by the laser beam (2) hitting the metal sheet (10) and projected toward the second focusing group (5). <IMAGE> <IMAGE></p> |
