Abstract: The invention relates to a machining module for a device for producing a molded metal body (1) by means of an additively generative manufacturing process. A sheet, wire, or pulverulent metal-containing starting material (2) is melted and applied in layers, thereby forming the molded body (1). According to the invention, in addition to a material supply device (9), the machining module comprises a protective gas supply device (11), which has an outlet opening arranged annularly about the material supply device (9), and a fluid supply device (3) for supplying coolant (4), having one or more nozzles (10) which are arranged spatially adjacent to the material supply device (9) such that the surface of the molded body (1) can be supplied with the coolant (4) in points or in a partial manner directly adjacent to the melt bath at one position or along a curve, each of which can be specified in a variable manner.

Abstract: The invention relates to a machining module for a device for producing a molded metal body (1) by means of an additive generative manufacturing process. A sheet, wire, or pulverulent metal-containing starting material (2) is melted and applied in layers, thereby forming the molded body (1). According to the invention, in addition to a material supply device (9), the machining module comprises a protective gas supply device (11), which has an outlet opening arranged annularly about the material supply device (9), and a fluid supply device (3) for supplying coolant (4), having one or more nozzles (10) which are arranged spatially adjacent to the material supply device (9) such that the surface of the molded body (1) can be supplied with the coolant (4) in points or in a partial manner directly adjacent to the melt bath at one position or along a curve, each of which can be specified in a variable manner.

Abstract: A method and an apparatus for joining two workpieces by means of a processing beam by forming a weld seam along a lap joint, wherein a gap formed at the lap joint between the two workpieces is filled during welding. The processing beam performs a spatial oscillatory movement parallel and/or perpendicular to the joint during welding. The oscillation parameters of said oscillation, the feed rate, the power of the processing beam and the angle of incidence of the processing beam onto the surfaces of the workpieces are adjusted dynamically during the welding process such that the upper sheet is fused in line with demand and the melt flows from the upper sheet down to the lower sheet thus closing the gap. The gap height is measured permanently during welding and the process parameters are adjusted such that a reliable closing of the gap is made possible.

Abstract: The invention relates to a method by which stitch welds (5) can be produced on the front faces of metal sheets (preferably on flanges) by means of laser welding. In order to produce the stitch weld seam, the following steps are repeated cyclically: pre-heating the joining partners (1, 2) in an area in front of the stitch weld seam to be produced, producing a short stitch weld section (7) at a relatively low resulting welding speed, and producing a section without a weld seam, as a result of which in each case an intermediate space (9) is formed between neighbouring stitch weld sections (7). The ratio of the lengths (6, 8) of intermediate spaces (9) and stitch weld sections (7) is selected in such a way that a degassing is achieved to such an extent that a high quality of the stitch weld seam (5) is achieved. The method is particularly suitable for producing welded joints between galvanized, heat-treated steel sheets, as are often used in automobile manufacture/vehicle body construction.

Abstract: The invention relates to a method and a device for joining workpieces by means of a laser beam, wherein the device comprises: a scanner optics for guiding the laser beam; a press element, which, during the joining process, is pressed along a pressing direction onto at least one of the workpieces; and a housing, which houses the scanner optics and the laser beam running from the scanner optics towards the workpieces, wherein the press element forms a part of the housing and is movable relative to the rest of the housing by at least one degree of movement freedom.

Abstract: The invention relates to a device and to an associated method for joining sheet metal parts, each with a flange, by laser, wherein the flanges of the sheet metal parts (2) are joined into one connecting flange. The device has a clamping device (5) for clamping the sheet metal parts (2) to be joined in a main clamping direction running transversely to the connecting flange and a beam guidance system for a laser beam (1). Moreover, the device has a compensation shaft (9) which tracks the laser beam (1) according to a relative movement between the connecting flange and a guidance apparatus.

Abstract: The invention relates to a method and a device for joining workpieces by means of a laser beam, wherein the device comprises: a scanner optics for guiding the laser beam; a press element, which, during the joining process, is pressed along a pressing direction onto at least one of the workpieces; and a housing, which houses the scanner optics and the laser beam running from the scanner optics towards the workpieces, wherein the press element forms a part of the housing and is movable relative to the rest of the housing by at least one degree of movement freedom.

Abstract: The invention relates to a device and to an associated method for joining sheet metal parts, each with a flange, by laser, wherein the flanges of the sheet metal parts (2) are joined into one connecting flange. The device has a clamping device (5) for clamping the sheet metal parts (2) to be joined in a main clamping direction running transversely to the connecting flange and a beam guidance system for a laser beam (1). Moreover, the device has a compensation shaft (9) which tracks the laser beam (1) according to a relative movement between the connecting flange and a guidance apparatus.

Abstract: A joining device for a bonded connection by means of a filler material has a feeding device for a wire as the filler material, which is configured to feed the wire during operation of the joining device at a predetermined speed of advance, and a guiding device for an energy beam with at least two partial beams for the melting of the wire. The joining device has a first measuring sensor for detecting a lateral deflection of the wire and a second measuring sensor for detecting a quantity related to the advancement of the wire, wherein the guiding device for the energy beam is connected to the first and the second measuring sensor and configured such that the energy beam is deflected and/or focused in dependence on the output signals of the first and second measuring sensor.

Abstract: The invention relates to a process and device for joining workpiece elements by means of an energy beam, especially a laser beam. The device comprises a wire feeding device for feeding a filler wire. In order to create optimum guidance of the wire relative to the laser beam and to the workpiece surface, the wire feeding device is mounted in a movable manner in the direction of the axis of the energy beam, in such a way that the wire tip melting in the energy beam is guided in a non-positive manner along the workpiece surface.

Abstract: The invention relates to a process and device for joining workpiece elements by means of an energy beam, especially a laser beam. The device comprises a wire feeding device for feeding a filler wire. In order to create optimum guidance of the wire relative to the laser beam and to the workpiece surface, the wire feeding device is mounted in a movable manner in the direction of the axis of the energy beam, in such a way that the wire tip melting in the energy beam is guided in a non-positive manner along the workpiece surface.