Abstract: Disclosed is a device for machining a workpiece transportable in a chosen direction in accordance with a selected pattern by a focussed laser beam. The device includes a scanner with a converging optical system. The scanner has a chosen distance relative to the workpiece. On the basis of the maximum laser output there is defined on the workpiece a certain operating area, of which the linear dimension transversely of the transporting direction is small relative to the dimension transversely of the workpiece. The device further includes computer-controlled displacing device for displacing the scanner substantially perpendicularly of the chosen direction. The scanner is displaced under computer control in transverse direction relative to the longitudinal movement of the workpiece. The machining takes place during the displacement of the scanner. The displacement speed is continuously adjusted to the amount of work available within the operating area of the scanner.

Abstract: A device for mutually connecting by laser welding of sheet-metal objects laid flat against each other at least in determined zones, for instance two or more flat or previously profiled plates, for instance stainless steel or other objects for mutual connection by laser welding, comprising: a welding station comprising a laser and an optical device for performing a laser welding operation using a laser beam via a preselected path consisting for instance of a plurality of sub-paths; clamping means, for instance a lower clamping plate and an upper clamping beam for clamping against each other at least said regions, of the objects at the location of the welding station; transporting means for supplying and carrying successive assemblies of objects laid on top of each other according to a chosen displacement pattern along the welding station, which transporting means comprise two separate conveyors, wherein the welding station is a collective one for both conveyors and respective individual clamping means are adde