Patent ID: 8360944

Claim:
A mechanical device comprising: a nozzle magazine on a nozzle holder carrier, where the nozzle magazine includes at least one nozzle holder configured to receive a laser nozzle; a positioning drive configured to jointly move the nozzle holder carrier and the nozzle holder with a positioning movement and to thereby move the nozzle holder into a change position; a change drive configured to rotate the nozzle holder, which is in the change position, about a nozzle holder rotation axis; a common drive motor for the positioning drive and the change drive; and a switchable coupling between the common drive motor on the one hand and the nozzle holder carrier and the nozzle holder on the other hand, wherein the switchable coupling is configured to be switched by a switching device such that: in a first switching state of the switchable coupling, a drive connection is produced between the drive motor and the nozzle holder carrier to enable the nozzle holder carrier and the nozzle holder to be jointly moved with a positioning movement and to thereby enable the nozzle holder to be moved into a change position; and in a second switching state of the switchable coupling, a drive connection is produced between the drive motor and the nozzle holder, which is in the change position, to enable the nozzle holder to be rotated about the nozzle holder rotation axis with a change movement.