Abstract: To improve quality and reduce reject in the large-scale production of components of an electrical machine provided with coil windings, a welding method is provided for welding conductor ends organized into groups of conductor ends of a component for an electrical machine. The method includes detecting a relative position of a first conductor end and a second conductor end of a group of conductor ends, and controlling a welding energy input to the conductor ends to be welded depending on the detected relative position. A welding apparatus for performing the welding method is also provided.

Abstract: A welding method for welding grouped conductor ends of a component for an electrical machine by means of a welding device. In the method, a relative position of a first conductor end and a second conductor end of grouped conductor ends and then a first size parameter of a molten pool formed during welding are detected. Subsequently, a second size parameter of the molten pool formed during welding is detected. In a further method step, a value of the molten pool is determined from the first size parameter, the second size parameter and the relative position. Finally, a welding energy input is controlled depending on the determined value of the molten pool.

Abstract: A device and a method for welding together conductor ends disposed on a component of an electric machine in a conductor end assembly. To be able to also process larger conductor end assemblies in a safe process, more rapidly and with considerably lower costs, the device includes an illuminating device for illuminating the conductor end assembly, an optical recognition device for recognizing the position of the illuminated conductor ends, a laser device capable of directing, depending on the recognized position, a laser beam onto each group of conductor ends, which is to be welded together, of the entire conductor end assembly, and a mount, by means of which the component is held stationary relative to the laser device during the welding process.

Abstract: An arrangement for electrically conductively connecting a cup shaped copper contact part to an electrical conductor that is made of a plurality of individual wires containing aluminum. The arrangement has a cup-shaped contact part, which includes a bottom and a cylindrical sleeve integrally connected to and projecting away from the bottom with tight contact of the sleeve to the conductor. The cup-shaped contact part is configured to be pushed onto the conductor until the end face of the conductor rests against the bottom of the contact part. At least one rotating tool is configured to be removably placed with sustained pressure, subsequently to the cup-shaped contact part, until the material of the conductor is softened due to the increased temperature of the material of the conductor due to friction to such an extent that it integrally connects to the contact part.

Abstract: A cast part includes a metallic functional region. The functional region extends in a first direction from a first side to a second side of the cast part. The cast part has a surrounding region at least partially surrounding the functional region. The functional region is shaped by a friction-based process. Further disclosed is a piece of equipment, such as an electrical machine which includes a further component and a device for securing the further component against twisting. The device has a connection between the functional region of the cast part and the further component.

Abstract: A cast part includes a metallic functional region. The functional region extends in a first direction from a first side to a second side of the cast part. The cast part has a surrounding region at least partially surrounding the functional region. The functional region is shaped by a friction-based process. Further disclosed is a piece of equipment, such as an electrical machine which includes a further component and a device for securing the further component against twisting. The device has a connection between the functional region of the cast part and the further component.

Abstract: A method is provided for electrically conductively connecting a contact part on the basis of copper to an electrical conductor composed of a plurality of individual wires containing aluminum. A cup-shaped contact part which has a bottom and a cylindrical sleeve, which is integrally connected to the bottom and protrudes from the bottom, is pushed with tight contact of the sleeve against the conductor to such an extent until the end face of the conductor rests against the bottom of the contact part. Consequently, at least one rotating tool (6) is applied with sustained pressure, until due to increased temperature of the conductor, the conductor is softened to such an extent that it integrally connects with the contact part. The wall of the contact part is not broken through by the tool. Finally, the tool is removed from the contact part.

Abstract: A method is provided for electrically conductively connecting a contact part on the basis of copper to an electrical conductor composed of a plurality of individual wires containing aluminum. A cup-shaped contact part which has a bottom and a cylindrical sleeve, which is integrally connected to the bottom and protrudes from the bottom, is pushed with tight contact of the sleeve against the conductor to such an extent until the end face of the conductor rests against the bottom of the contact part. Consequently, at least one rotating tool (6) is applied with sustained pressure, until due to increased temperature of the conductor, the conductor is softened to such an extent that it integrally connects with the contact part. The wall of the contact part is not broken through by the tool. Finally, the tool is removed from the contact part.