In a method for producing stacks of laminations, in which at least one adhesive is applied onto annular laminations with at least one application head and laminations are stacked into a stack of laminations, the lamination is rotated about its axis in the application area of the application head and/or the application head is moved about the axis of the lamination in order to apply the adhesive onto the lamination. A system for carrying out the method features at least one punching tool, with which laminations are punched out of a sheet metal material, wherein at least one station for cleaning and/or for activating and/or for applying an adhesive onto the laminations is arranged downstream of the punching tool.

To allow necessary movement of a magnet in a magnet insertion hole during a manufacturing process so that a magnet embedded core in which the magnet is positioned as designed can be manufactured efficiently, a lower plate (12) and an upper plate (14) configured to contact against the end surfaces of a rotor core (2) are provided with pin members (37, 39) configured to enter a magnet insertion hole (4) to allow movement of a magnet (5) in a first direction, which is a separation direction of two mutually opposing inner surfaces (4C, 4D) of a magnet insertion hole (4), and to restrict movement of the magnet in a second direction orthogonal to the first direction as viewed in the axial direction of the magnet insertion hole (4), in a state where the magnet insertion hole is not filled with resin.

To automate setting of coupling rods when using a rotor core retaining jig and thereby to improve the production efficiency of a magnet embedded core, a setting device includes: a support base (42) on which the rotor core retaining jig (10) is to be placed; an opposing base (46) joined to the support base 42 to oppose the support base (42); a pressurizing device (48) provided on the opposing base (46) and configured to pressurize an upper plate (14) of the rotor core retaining jig (10) on the support base (42) toward a lower plate (12); chuck devices (126) provided on the support base (42) to releasably grip the coupling rods (30) and capable of moving between a separated position where the coupling rods (30) are separated from engagement grooves (32, 34) and an engaged position where the coupling rods (30) engage the engagement grooves (32, 34); and a fluid pressure cylinder device (120) provided on the support base (42) to drive each chuck device (126) between the separated position and the engaged position.

A device for producing a stator for an electrical machine includes a segment feed for feeding stator segments, a cylindrical press for pressing the stator segments, a housing feed for feeding stator housings, and a mandrel for receiving the stator segments. The mandrel includes an axial direction, a first region with a first radius, a second region arranged axially below the first region with a second radius that is less than the first radius, and a third region arranged axially below the second region with a third radius that is less than the second radius. In an example embodiment, the mandrel is movable from the segment feed to the cylindrical press, from the cylindrical press to the housing feed, and from the housing feed to the segment feed.

A method of engaging wire ends of a stator assembly. The method involves advancing multiple fingers radially inwardly toward the wire ends, and rotating the fingers. The fingers have protrusions that engage the wire ends. A tooling assembly for engaging the wire ends has a first plate, a second plate, and has the fingers. The first plate has slots, and the second plate has teeth. The fingers have pins that ride in the slots of the first plate, and the fingers have teeth that mesh with the teeth of the second plate.

To improve the abrasion resistance and releasability of the inner peripheral surfaces of a resin pot chamber, a gate, and the like in a manufacturing device for a magnet embedded core without using cemented carbide, the inner peripheral surface of the resin pot chamber (64), the inner peripheral surface of the gate (50), the outer peripheral surface of the plunger (62), and the like of the manufacturing device (10) for the magnet embedded core are constituted by chromium nitride layers (59, 65, 47) or the like.

A method of forming an electric machine lamination includes punching a sheet having a first composition to form a cavity and a compressed region at a perimeter of the cavity. The method further includes depositing, within the cavity and on the compressed region, a deposit material having a second composition different than the first composition. The method further includes scanning a beam along the deposit material to form a bound material within the cavity and on the compressed region.

An electric machine that is configured to propel a vehicle includes a stator and a rotor. The stator has windings that are configured to generate magnetic fields. The rotor has a plurality of magnetic blocks that interacts with the magnetic fields to produce rotational motion. Each of the plurality of magnetic blocks is segmented into a plurality of permanent magnets. Adjacent permanent magnets within each magnetic block are separated from and secured to each other via an intermediate electrically insulating material. The intermediate electrically insulating material is comprised of magnetic particles that are suspended in an adhesive matrix.

A multi-conductor winding for an electric machine includes a plurality of conductors having a substantially identical wire form with a plurality of end turns joining a plurality of slot segments. A first portion of the plurality of conductors is arranged in a first orientation and a second portion of the plurality of conductors is arranged in a second orientation that is a mirror image of the first orientation. The plurality of end turns of the plurality of conductors includes at least three distinct winding pitches.

The invention relates to a stator (200) comprising an annular body (210) provided with a plurality of slots (213) and a winding (400) comprising a first series (A) of needles (1) and a second series (B) of needles (1) which are arranged in the slots (213) in a plurality of superimposed layers (C1-C4), each needle (1) comprising a first segment (1A) and a second segment (1B) which are each arranged in different slots (213) and connected by an elbow connector (1C). According to the invention, the first segments (1A) and the second segments (1B) of the first series (A) are respectively arranged in a first layer (C1) and in a second layer (C2) and the first segments (1A) and the second segments (1B) of the second series (B) are respectively arranged in a third layer (C3) and in a fourth layer (C4), the first series (A) being electrically connected to the second series (B).