Machine head for the machining of workpieces by laser radiation

摘要

Machine head (10) for the machining of workpieces by laser radiation, in particular for cutting thick plate by CO2 laser radiation in the maximum power range, with a nozzle (11) which is attached to a gas supply, has a longitudinal characteristic and is held by a rotatably adjustable holder (12) of the machine head (10), which has the focusing optics (13). In order to obtain a configuration independent of the rotation of the adjustable holder (12), the machine head (10) is designed in such a way that the holder (12) of the nozzle (11) serves to supply the gas to the nozzle (11). Between a fixed holder part (15) attached to a stationary gas feed line (14) and a rotatable holder part (16) attached to the nozzle (11), the holder (12) has a gas-line part (19) sealed off from both parts (15, 16) and connecting their gas lines (17, 18). <IMAGE>