SKAEREHOVED TIL BEARBEJDNING VED HJAELP AF EN LASERSTRAALE

摘要

A cutting head for cutting a material by means of a laser beam (1) focused in a pressure chamber (4) endling in a nozzle (6). Through a pipe (7) connected to the chamber, said chamber is capable of receiving pressure gas for blowing out the gas through the nozzle. According to the invention pressure gas is fed both to the front and the back of the beam-focusing unit or units in the chamber (4). In this manner the beam-focusing units do not limit the pressure within the chamber.