Düsenanordnung für das Laserstrahlschneiden
A nozzle assembly (34) for laser beam cutting having a truncated conical nozzle body (10) matched to the focussed laser beam with a through drilling (11) for the laser beam, with a nozzle sleeve (13) concentrically surronding the nozzle body (10) and thus forming an annular gap (12), said sleeve having an outlet drilling (14) coaxial with the through drilling (11) for a stream of cutting gas from the annular gap (12) connected to a source of gas, in which the outlet drilling (14) is arranged in front of the through drilling (11) on the workpiece side and has a diameter (D) exceeding that (d) of the through drilling (11). To ensure that thegas stream is deflected from the nozzle parallel to the axis of the laser beam with a minimum of flow losses, the nozzle assembly is designed so that the outlet cross section of the outlet drilling (14) is approximately the same as the transition cross section between the annular gap (12) and the outlet drilling (14).