A method of fixing a permanent magnet in a rotor core includes: forming a magnet accommodation portion into which a permanent magnet is to be inserted and an internal hole defined in an area adjacent to one end of the magnet accommodation portion; inserting the permanent magnet into the magnet accommodation portion; performing a caulking process by inserting a bar into the internal hole; and pressing a pressing portion toward the permanent magnet using the bar. In particular, the pressing portion is provided between the internal hole and the magnet accommodation portion

A method for producing a rotor device, including providing a rotor shaft having at least one sheet metal packet joined to the rotor shaft. The at least one sheet metal packet includes magnetic units. The method includes performing a transfer molding process, in which the magnetic units are fixed in position in relation to the at least one sheet metal packet and at least one balancing disk is joined axially on the rotor shaft on at least one side of the at least one sheet metal packet such that a gap of a defined width is ensured between the at least one balancing disk and the at least one sheet metal packet. The gap is filled with a molding compound used for the transfer molding process. The method includes determining an imbalance of the rotor device and compensating the imbalance by removing material from the at least one balancing disk.

A segmented stator for an electric motor comprises: a plurality of tooth segments arranged in a circular configuration, the tooth segments having body portions and front surfaces extending inward from the body portions; and wire wound on the body portions. A distance between adjacently positioned front surfaces of the tooth segments is less than a width of the wire. The wire wound on the body portions substantially fills space between adjacently positioned tooth segments.

Metal sheets are connected in that a hole is introduced into metal sheets of a first stack, and a region of metal sheets of a second stack are deformed in a stack direction. The deformed region can be plastically deformed in such a way that there is interlocking of the deformed region with at least one metal sheet lying below same. In embodiments, the hole has a shape with a reduced width at the center.

There are provided a laminated iron core, a manufacturing method thereof, and a progressive die machine, in which the laminated iron core includes: a plurality of iron core pieces which are laminated; adhesives that bond the iron core pieces adjacent to each other. Each of the iron core pieces includes an annular yoke portion and a plurality of teeth portions projecting radially from the yoke portion. Each of the adhesives is arranged at a different radial distance from a central axis of the iron core pieces and is evenly arranged in a circumferential direction of the iron core pieces on at least one of the entire yoke portion and the entire teeth portions.

A motor component, a motor and a motor vehicle are disclosed. The motor component has a body extending along a rotation axis of the motor, the body being formed by a set of laminations, and an axially extending cavity being provided on the body; and wherein at least one elongated lamination-holding component is provided in the body, and the lamination-holding component is inserted into the axially extending cavity and is coupled to the body inside the axially extending cavity.

A stator of an electric machine includes a stator lamination package including a plurality of stator laminations and a coolant guide arranged between the stator laminations. The stator laminations include radially inward recesses and stator windings are arranged in the stator grooves, directly around which windings a coolant can flow within the stator grooves. The coolant guide includes first lamination blanks axially bordering the coolant guide on opposite sides thereof. The coolant guide includes second lamination blanks arranged between the first lamination blanks. The first and second lamination blanks and the stator laminations radially include recesses. Only the second lamination blanks additionally include radial coolant channels configured to guide coolant radially inward or radially outward. The radially inward recesses of the stator laminations and the lamination blanks are closed in a radially inward direction, and axially adjacent stator laminations and lamination blanks are glued together in a laminar manner.

Various embodiments of the teachings herein include an electric machine. The machine comprises a stator and/or a rotor with a stack of soft-magnetic laminations. The soft-magnetic laminations are disposed next to one another on flat sides of the laminations. At least one of the flat sides on which two adjacent laminations are close to one another is formed with a sintering skin.

The present invention relates to a rotor (100) for a rotary electric machine, in which each package of plates (300) of the rotor (100) comprises, at both ends or end sections thereof, at least one first inverted plate (311) and at least one last inverted plate (312), said plates being inverted in relation to the other plates (310) of the package of plates (300).

A method of manufacturing a rotating body includes disposing an end plate on an end surface of the core body in a height direction, and forming the rotating body by welding the end plate and the core body together. The rotating body is formed by welding the end plate and the core body together while a temperature of the core body and the end plate is within a predetermined operational a temperature range associated with rotation of the rotating body in a manufactured state of operation.