Laser head of a laser beam processing machine comprising alternating nozzles

It is a laser head (18) in the laser beam processing machine which has a case (16), and a radiation room (14) and its end are equipped with the nozzle (13) for laser beams (11), and the exit of work gas in this case. A case (16) is equipped with a cap-like nozzle head (8), and to the inside, the nozzle for exchange (13) is held so that rotation around the axis of rotation (10) is possible and it may enter in irradiation of a laser beam. The axis of rotation (10) itself has exchange of a nozzle head (8) on an eccentric disk (15) possible by one adjustment. Adjustment beyond it is not required but the nozzle (13) on a nozzle disk (5) can be exchanged automatically. Therefore, the adjustment and complicatedness which require cost in the case of nozzle exchange become unnecessary.