| 摘要 |
Device for joining two work piece parts to a workpiece by beam welding, comprises: welding seams extending in a predetermined weld pattern in areas of different properties of the workpiece parts; a receptacle (4) which is adapted to position two workpiece parts extending in the x-y-direction to each other in the x-, y- and z-direction of Cartesian coordinate system; a laser beam source (2), directed on the receptacle and positioned in the workpiece parts with its direction of radiation; and a transport device (5) for transporting the laser beam source to the receptacle. Device for joining two work piece parts to a workpiece by beam welding, comprises: welding seams extending in a predetermined weld pattern in areas of different properties of the workpiece parts; a receptacle (4) which is adapted to position two workpiece parts extending in the x-y-direction to each other in the x-, y- and z-direction of Cartesian coordinate system; a laser beam source (2), directed on the receptacle and positioned in the workpiece parts with its direction of radiation; and a transport device (5) for transporting the laser beam source to the receptacle in the y-direction, which comprises a storage and control unit. The laser beam source is arranged downstream of a homogenizer (3) in the radiation direction in which at least two mutually parallel reflection channels (33) are provided in the y direction, which completely pass through the homogenizer in the z direction with a channel depth. The channels are dimensioned according to a predetermined pattern and welded to each other, and at least two reflection channels are associated with the laser emitters of different laser power. The reflection channels have opposing reflective channel walls, on which at least a part of the laser beam coming from the associated laser beam emitter is repeatedly reflected back and forth. The laser beam emitter has different the laser power, where at least one laser beam emitter has lower laser power and another laser beam emitter has comparatively higher laser power to generate simultaneously parallel welding seams of the same quality in regions of different properties of the workpiece parts by the laser radiation for an equal exposure time. |
