Various embodiments of the invention include an apparatus for removing particulates from the surface of a 3D printed workpiece. Various particular embodiments include a material removal apparatus having: an enclosure having a first inlet and a first outlet; a rotatable platform contained within the enclosure for positioning a 3D printed workpiece having particulate on a surface thereof; a pressurized fluid applicator connected to the first inlet and configured to selectively apply a pressurized fluid to the 3D printed workpiece; a vibration source configured to apply an adjustable vibratory frequency to at least one of the rotatable platform or the 3D printed workpiece; and a material reclamation unit connected to the first outlet configured to collect a material removed from the 3D printed workpiece.

A laser processing robot system, in which an augmented reality processing technology is used to enable a processing laser beam and its irradiation position to be safely and easily seen, is provided. A laser processing robot system includes an image processing device having an augmented reality image processing unit for performing augmented reality image processing for an actual image including an image of a robot captured by an imaging device. The augmented reality image processing unit is adapted to superimpose a virtual image representing at least one of a laser beam obtained by assuming that the laser beam is emitted from a laser irradiation device to a workpiece, and an irradiation position of the laser beam, onto the actual image, and to display the superimposed image on the display device.

A method and associated device for joining a battery cell tab to a plurality of foils associated with a plurality of electrodes of a battery cell are described. This includes arranging the plurality of foils in a stack, and joining, via a first joining device, the plurality of foils, wherein the first joining device defines a joining region. A portion of the battery cell tab is arranged on the plurality of foils, and joined, via a second joining device, to the plurality of foils. The second joining device generates a weld joint that is encompassed within the joining region defined by the first joining device. In doing so, weld quality and strength of internal welds in a battery cell may be improved by reducing the occurrence of porosities and cracks in the foil/tab weld joints.

The invention relates to a method for producing a bipolar plate (5), comprising the following steps: a. providing two planar components (7), which are present in particular in a stacked manner, b. integrally bonding the two planar components (7), in particular by welding, in a joining plane (34), wherein, prior to integrally bonding, internal stresses (9) are introduced into at least one of the two planar components (7). The invention also relates to a fuel cell (1) comprising a bipolar plate (5) produced according to this method.

The invention relates to a method for producing a bipolar plate (5), comprising the following steps: a. providing two planar components (7), which are present in particular in a stacked manner, b. integrally bonding the two planar components (7), in particular by welding, in a joining plane (34), wherein, prior to integrally bonding, internal stresses (9) are introduced into at least one of the two planar components (7). The invention also relates to a fuel cell (1) comprising a bipolar plate (5) produced according to this method.

In a method for welding using a wire-shaped filler and at least one laser beam, the wire-shaped filler is advanced in the direction of the surface of the workpiece by a wire feed mechanism. The wire-shaped filler is successively fused during the feed movement thereof. The wire-shaped filler and the material are connected to an electrical voltage source and form an electrical circuit. The electrical voltage, the electrical current and/or the electrical resistance are measured and used as control variables for the wire feed movement and/or the power of the at least one laser beam. Use of the laser beam is modified when a predefined threshold value of the electrical voltage and/or of the electrical current are fallen short of or a predefined threshold value of the electrical resistance is exceeded.

The purpose of the present invention is to provide a laser device that makes it possible to minimize condensation in a closed space by means of a simple structure. This laser device comprises a closed space (S4) in which an optical system (31) for transmitting laser light is accommodated and a dew point adjustment flow path (5) of which at least one part is a flow path wall section formed from a transmissive material (51) through which gas molecules including water vapor are transmitted and dust and oil mist are not transmitted. The transmissive material (51) separates the interior of the dew point adjustment flow path (5) and the closed space (S4).

The purpose of the present invention is to provide a laser device that makes it possible to minimize condensation in a closed space by means of a simple structure. This laser device comprises a closed space (S4) in which an optical system (31) for transmitting laser light is accommodated and a dew point adjustment flow path (5) of which at least one part is a flow path wall section formed from a transmissive material (51) through which gas molecules including water vapor are transmitted and dust and oil mist are not transmitted. The transmissive material (51) separates the interior of the dew point adjustment flow path (5) and the closed space (S4).

The invention relates to an apparatus for laser-deposition welding with multiple laser-deposition welding heads and to a method for operating such an apparatus comprising a laser-deposition welding unit with multiple laser-welding heads arranged thereon for the (quasi-) simultaneous depositing of material (M) onto a surface of a component and also comprising one or more conveying units for supplying the laser-deposition welding heads with the material (M) to be applied and further comprising one or more laser-radiation sources for supplying the laser-deposition welding heads with laser radiation (L) for carrying out the laser-deposition welding.

The invention relates to an apparatus for laser-deposition welding with multiple laser-deposition welding heads and to a method for operating such an apparatus comprising a laser-deposition welding unit with multiple laser-welding heads arranged thereon for the (quasi-) simultaneous depositing of material (M) onto a surface of a component and also comprising one or more conveying units for supplying the laser-deposition welding heads with the material (M) to be applied and further comprising one or more laser-radiation sources for supplying the laser-deposition welding heads with laser radiation (L) for carrying out the laser-deposition welding.