Patent EP-2599574-A1 (EP)
Inventor: WALTER STEFFEN
IPC: B23K26/04
Filed: 2011-11-30
Abstract: The device comprises a laser beam input module that is formed to direct an incident laser beam on the laser beam input module and a pivotable beam guiding device, where the beam guiding device is arranged for projecting the laser beam on a target course and comprises a pivotable optics (5) along a pivot axis (4) and a tactile scanner (6) connected to the pivotable optics. The tactile scanner is designed to scan the target course and to deflect the pivotable optics. An intermediate focus point is formed in a beam path of the laser beam in front of the pivotable optics. The device comprises a laser beam input module that is formed to direct an incident laser beam on the laser beam input module and a pivotable beam guiding device, where the beam guiding device is arranged for projecting the laser beam on a target course and comprises a pivotable optics (5) along a pivot axis (4) and a tactile scanner (6) connected to the pivotable optics. The tactile scanner is designed to scan the target course and to deflect the pivotable optics. An intermediate focus point is formed in a beam path of the laser beam in front of the pivotable optics. The pivot axis of the pivotable optics extends through the intermediate focus point. The laser beam input module is adapted to focus the laser beam onto the intermediate focal point. The pivotable optics is designed to image the intermediate focal point on the target course. The laser beam input module comprises an optical fiber, and an intermediate imaging optics. The intermediate imaging optics: is designed to map an end of the optical fiber on the intermediate focal point; and is formed on a side of the optical fiber facing the pivotable optics that is designed to form the intermediate focal point on the target course. The laser beam input module is further designed to generate a non-focused beam. The pivotable optics has a virtual intermediate focus that is located in the collimated beam path. The tactile scanner and the pivotable optics are connected to an energy store with an elastic element. The elastic element of the energy store is formed to provide a portion of its stored energy depending on a swivel out (alpha ) of the pivotable optics for the resetting of optics and the scanner in a rest position. The optics and the scanner are coupled via two driver stops of the elastic element, by which a first driving stop of the elastic element is deformed with the pivotable optics in a positive pivot axis direction and a second driver stop of the elastic element is deformed with the pivotable optics in a negative pivot axis direction. The elastic element: is formed in a one-piece manner; is mounted on a housing having two stationary stop faces; and is pressed against a first stop face with a deflection in the positive pivot axis direction and against a second stop face with a deflection in the negative pivot axis direction. One of the two stop faces and/or one of the driver stops is adjustably arranged in a deformation direction of the elastic element. The elastic element is a mechanical spring having pressure discs on both ends, where the pressure discs, the driver stops and the stationary stop surfaces are formed in a dome-shaped manner. The scanner is spring-mounted in a laser beam direction over an elastic component. The laser beam input module is coupled to the elastic component. The pivotable optics is rigidly connected to the scanner comprising a seaming required for filler wire.