Abstract: A method that makes it possible to produce actual cutting contours on tubes with only rough tolerances, to which contours others of the tubes can be joined and welded, wherein, as a result of the actual cutting contours being modified, the rough shape tolerance of the tubes does not enter the tolerance chain, or enters the latter only a little, for the tubes to be fully welded to form a tubular frame. It also allows the automated reception of only pre-oriented tubes by a gripping arm and the infeed thereof to a laser cutting device.

Abstract: A method for trimming a bent tube along an actual cutting contour, wherein a virtual tolerance envelope is calculated for the tube and a laser beam cutting the actual cutting contour is guided along a desired cutting contour related to the tolerance envelope, wherein the actual cutting contour is produced as a projection of the desired cutting contour or the laser beam is guided along the corrected desired cutting contour, which then corresponds to the actual cutting contour.

Abstract: A device for simultaneously processing a circumference of a workpiece includes a plurality of laser-lens modules and a waveguide. The modules each include a diode laser and a lens system and is configured to emit a laser beam radially in a shared radiation plane. The waveguide includes a lower part and an upper part that together form a cavity enclosing the radiation plane. The laser-lens modules are configured so that the laser is reflected repeatedly between a bottom surface and a cover surface and propagates in an unaffected manner within the radiation plane so as to form a beam spot that strikes the workpiece with a homogeneous energy distribution. The beam spot has a height based on a distance between the surfaces and a width based on a divergence angle in the radiation plane and a distance of the module from the workpiece surface.

Abstract: The present invention relates to a system for spot welding with a laser beam (6) in which the laser beam (6) passes through a tube (3) and impinges on the components (7.1, 7.2) to be welded together. The cross section of the laser beam (6) is formed by reflections inside the tube, and the distribution of the radiation intensity is homogenized across the cross section of the beam. At the same time, the tube (3) exerts a contact force (F) on the components (7.1, 7.2) that are to be welded together. Using a plurality of laser beams (6), to each of which a tube (3) is dedicated downstream, it is possible to create a simple and robust, component-specific system by means of which several or all weld spots can be simultaneously produced so as to conjoin the two components (7.1, 7.2).

Abstract: A device for simultaneously processing a circumference of a workpiece includes a plurality of laser-lens modules and a waveguide. The modules each include a diode laser and a lens system and is configured to emit a laser beam radially in a shared radiation plane. The waveguide includes a lower part and an upper part that together form a cavity enclosing the radiation plane. The laser-lens modules are configured so that the laser is reflected repeatedly between a bottom surface and a cover surface and propagates in an unaffected manner within the radiation plane so as to form a beam spot that strikes the workpiece with a homogeneous energy distribution. The beam spot has a height based on a distance between the surfaces and a width based on a divergence angle in the radiation plane and a distance of the module from the workpiece surface.

Abstract: The present invention relates to a system for spot welding with a laser beam (6) in which the laser beam (6) passes through a tube (3) and impinges on the components (7.1, 7.2) to be welded together. The cross section of the laser beam (6) is formed by reflections inside the tube, and the distribution of the radiation intensity is homogenized across the cross section of the beam. At the same time, the tube (3) exerts a contact force (F) on the components (7.1, 7.2) that are to be welded together. Using a plurality of laser beams (6), to each of which a tube (3) is dedicated downstream, it is possible to create a simple and robust, component-specific system by means of which several or all weld spots can be simultaneously produced so as to conjoin the two components (7.1, 7.2).