The invention relates to a device for cutting to length conductor pieces, in particular hairpins, received in a stator core, including a receptacle for the stator core together with the conductor pieces received therein, the free ends of which protrude out of the stator core when in the received state, in particular in the direction of gravity, and a cutting unit which comprises cutting portions that are designed and arranged such that they can be moved toward one another in order to act in a cutting manner from two opposing sides on at least one conductor piece to be cut to length, and the longitudinal axis thereof, during a cutting process.

The invention relates to an apparatus and a method for reshaping one or more conductor pieces arranged in a stator core, wherein a plurality of conductor pieces is arranged in the stator core, the conductor pieces being arranged on a plurality of circular paths running in a circumferential direction in rows which extend in a radial direction, and wherein the reshaping takes place in a free end of the conductor piece projecting out of the stator core.

The invention relates to an apparatus and a method for shaping one or more conductor pieces arranged in a stator core, wherein the conductor piece is a hairpin with two elongate legs and a connection portion connecting these two legs, wherein a large number of conductor pieces is arranged in the stator core, which conductor pieces are arranged in rows extending in a radial direction on a plurality of circular paths extending in a circumferential direction, and wherein the shaping takes place in a free end of the conductor piece that projects from the stator core.

A method and an apparatus for compact insertion of thick wire multiphase pseudo helical wave winding into a ferromagnetic core of an electrical machine, achieving high fill factor of the core slots, resulting in better heat transfer between the winding and the core, low mass and volume, and overall higher efficiency of electrical machine. An apparatus being fully programmable and physically adaptable to wide range of electric machine dimensions, where process is automated, simple, accurate, reliable and quick, while being suitable for mass production.

Provided is a holding device usable when a stator is machined, the stator including a toric stator core, a plurality of coils (see FIG. 1) provided such that coil ends of the coils project from both ends of the stator core in its axial direction, and insulating paper disposed between the stator core and each of the coils. The holding device includes: a core fixture configured to fix the stator core; and a coil-end fixing portion configured to fix to-be-machined coil ends such that the coil-end fixing portion presses the to-be-machined coil ends from the inner side to the outer side in the radial direction of the stator core. A relative position in the axial direction between the stator core fixed by the core fixture and the to-be-machined coil ends fixed by the coil-end fixing portion is fixed.

A strip-shaped winding unit for a stator winding has a first winding conductor, which is led in a plurality of layers of the winding unit and includes: a. a plurality of straight groove portions which run in a transverse direction of the winding unit and are arranged mutually parallel; b. a first curved end portion, which connects a first groove portion in the first layer to a second groove portion in a second layer adjacent to the first layer and is arranged on a first longitudinal side of the winding unit; c. a second curved end portion, which connects the second groove portion in the second layer to a third groove portion in the first layer and is arranged on a second longitudinal side of the winding unit opposite the first longitudinal side; d. a third curved end portion, which connects the third groove portion in the first layer with a fourth groove portion in the second layer and is arranged on the first longitudinal side of the winding unit; and e. a fourth curved end portion, which connects the fourth groove portion in the second layer to a fifth groove portion in a third layer adjacent to the second layer and is arranged on the second longitudinal side of the winding unit.

An electric machine includes a stator core defining a plurality of slots, slot liners disposed within the slots and covering inner surfaces of the slots, and windings wound within and between the slots. Each of the slot liners has an end extending away from a face of the stator core and defining a flange that includes a rim in direct contact with the face and a terminating lip that is wider than the rim such that the rim is between the face and the terminating lip.

The method for manufacturing an armature includes a step of independently pressing pressing-target segment conductors by a plurality of pressing jigs disposed for each of the pressing-target segment conductors, such that the plurality of pressing jigs are movable relative to each other, at least either one of first segment conductors and second segment conductors serving as the pressing-target segment conductors.

A stator manufacturing apparatus includes an insertion tool that is insertable into a stator core and being configured to dispose a pair of side parts of a stator coil in two holding grooves. A pressing tool has plate-like pushers arranged to correspond to the positions of the holding grooves. The pressing tool pushes out the side parts of the stator coils and inserts the side parts into the corresponding slots. A pair of shaping tools face coil end parts of the stator coils. A plurality of slits through which the pushers are insertable are provided in a principal surface of each shaping tool. A shaping tool moving unit shapes the coil end parts by pressing the pair of shaping tools in an axial direction with the pushers inserted in each of the corresponding holding grooves.

Rotating electric machine provided with an axis X. The machine comprises a front part and a rear part. The machine comprises a rotor of axis X comprising two axial end surfaces, each provided with fan blades. The axial surfaces located on the side of the front part and on the side of the rear part. A stator comprises a stator body having slots. The stator comprises a winding installed in the slots and forming a front winding head and a rear winding head. The rotor and the stator are placed in a casing. The front winding head completely masks the blades of the axial surface located on the front side of the machine, along a direction perpendicular to axis X.