Abstract: A method for producing a piston for an internal combustion engine may include producing a piston upper part including a piston top, at least parts of a ring section, and at least part of a cooling channel, producing a piston lower part and closing the part of the cooling channel arranged in the piston upper part via an additive method, and finish-machining the piston. Finish-machining the piston may include producing at least one annular groove in a ring support for receiving a piston ring.

Abstract: The present invention relates to a method for producing a piston (1) for an internal combustion engine from a piston upper part (2) and a piston lower part (3). The method has the following method steps: producing a piston upper part (2) having a piston top (6), at least parts of a ring section (12) and at least part (7) of a cooling channel (8), by forging or casting for example, producing the piston lower part (3) and closing the part (7) of the cooling channel (8) which is arranged in the piston upper part (2) by means of an additive method, finish-machining the piston (1), including the production of at least one annular groove (4) in the ring support (5) for receiving a piston ring.

Abstract: A piston for an internal combustion engine may include a cooling duct having at least one feed opening. The piston may also include a feed funnel arranged within the at least one feed opening. The feed funnel may be fixed in the at least one feed opening via a blind rivet connection.

Abstract: A piston for an internal combustion engine may include a cooling duct having at least one feed opening. The piston may also include a feed funnel arranged within the at least one feed opening. The feed funnel may be fixed in the at least one feed opening via a blind rivet connection.

Abstract: A pressing system for a laser joining system for pressing together parts to be joined (storage cell, base plate) in the area of a joining point, includes a receptacle for accommodating the parts to be joined, a pressing element for locally pressing together the parts to be joined, in the area of the joining point, and a positioning system for the relative positioning of the pressing element and the receptacle and for pressing together the parts to be joined, during the joining process. The positioning system includes a parallel positioning device for the relative positioning of the receptacle and the pressing element in parallel to a plane (E), and an oblique positioning device for the relative positioning of the pressing element and the receptacle obliquely, in particular transversely, with respect to the plane (E) and for pressing together the parts to be joined, during the joining process.

Abstract: A method for joining a first join part, in particular a cover glass, with a second join part, in particular a housing and/or a display layer of a cover glass display assembly, uses a thermosensitive adhesive that is heated indirectly and/or directly by irradiation with light from a light source, in particular with infrared light and/or visible light, for producing the connection. A planar emitter is used as the light source. The method allows for a fast and secure joining of the join parts.

Abstract: A pressing system for a laser joining system for pressing together parts to be joined (storage cell, base plate) in the area of a joining point, includes a receptacle for accommodating the parts to be joined, a pressing element for locally pressing together the parts to be joined, in the area of the joining point, and a positioning system for the relative positioning of the pressing element and the receptacle and for pressing together the parts to be joined, during the joining process. The positioning system includes a parallel positioning device for the relative positioning of the receptacle and the pressing element in parallel to a plane (E), and an oblique positioning device for the relative positioning of the pressing element and the receptacle obliquely, in particular transversely, with respect to the plane (E) and for pressing together the parts to be joined, during the joining process.