A method of manufacturing a coil includes a preparation step of preparing a copper wire, a winding step of winding a plurality of aluminum wires around the copper wire, and a pressing step of pressing the copper wire and the plurality of aluminum wires so as to form an aluminum coat around the copper wire and form an anodized aluminum film on the surface of the aluminum coat.

A method for producing a rotor of an asynchronous machine includes providing a rotor lamination stack having grooves extending parallel to a rotor axis of the rotor, inserting conductor rods into the grooves such that the conductor rods protrude from end faces of the rotor lamination stack, wherein a twisting tool is placed at each of the end faces onto the protruding conductor rods and the twisting tools are twisted relative to each other, where the parallel grooves with the corresponding conductor rods also extend obliquely after the twisting and where the twisting tools are formed such that the protruding conductor rods remain parallel to the rotor axis when an oblique profile of the stack is produced, removing the twisting tools, providing first and second short-circuit washers, and axially pressing the short-circuit washers onto the conductor rods projecting perpendicularly from the end face of the rotor lamination stack.

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.

Terminal device for a stator of an electric machine includes a central opening, and an insulation body surrounding the central opening about a longitudinal axis extending through the central opening. The insulation body includes a base and a plurality of concentrically arranged ribs protruding from the base into an axial direction and extending along a circumferential direction. A plurality of accommodation spaces are each formed between a respective pair of radially adjacent ribs and having the shape of a sector of an annulus.

A rotating electric machine having high efficiency and high reliability without causing an increase in size and cost is realized. Each of the rectangular wire segment coils has a first region portion and a second region portion connected to the first region portion and formed in the circumferential direction including a bent portion in the circumferential direction of the stator core 10, and a pair of the rectangular wire segment coils adjacent to each other at the coil ends of the plurality of rectangular wire segment coils has a conductive portion to which the first region portion of one of the rectangular wire segment coils and the second region portion of the other of the rectangular wire segment coils are connected. The second region portion has a conductive portion cross-section disposed on the same plane as the end portion cross-section of the first region portion, and the conductive portion cross-section is a cross-section in a direction different from a direction of the coil vertical cross-section of the second region portion. Each of the plurality of layers includes a first layer in which the first region portion appears at an axial end portion and a second layer in which the second region portion appears at an axial end portion when the coil end is viewed in an axial direction of the rotating electric machine.

Provided are a permanent magnet recovery device and a permanent magnet recovery method capable of recovering, without degradation of permanent magnet properties, a permanent magnet attached to a laminated steel sheet, having an insulating film, via a resin material. A permanent magnet recovery device includes a heat-treating furnace that stores a permanent magnet holder in which permanent magnets are attached thereto, having insulating films, via a resin material and a high-frequency wave absorbent is provided at each end portion of the permanent magnet holder in a lamination direction of the laminated steel sheet so as to contact at least the resin material, and a microwave generator that emits microwaves into the heat-treating furnace. In this aspect, the permanent magnet holder is a predetermined rotating electrical machine rotor, and a high-frequency wave absorbent is further provided along an outer peripheral portion of the laminated steel sheet of the rotor.

An electric machine is provided. The electric machine includes a stator having an electromagnetic coil and a rotor. The rotor is configured to rotate relative to the stator. The electric machine further includes a controller. The controller is adapted to control the electromagnetic coil. The controller includes a plurality of electrical components and an isolation member. The isolation member includes a first portion positioned in a first direction between two adjacent electrical components of the plurality of electrical components and a second portion positioned in a second direction normal to the first direction.

A method for mounting a switching unit on a component of an electric motor, including a component of an electric motor. The component may include a plurality of teeth and coil windings, arranged on the teeth and are formed by winding wire portions, the winding wire portions protruding from the coil windings by means of winding wire ends. A switching unit, which has an arrangement of connecting conductors, is arranged on the component of the electric motor. At least some of the winding wire ends are connected to the connecting conductors of the switching unit. In order to connect the winding wire ends to the connecting conductors of the switching unit, a positioning element, operatively connected to the winding wire ends, and the switching unit are moved relative to each other along a movement plane and the winding wire ends are thereby brought into contact with the connecting conductors.

A component designed to form a rotor for an electric machine includes a shaft, and an active part which is disposed in concentric circumferentially surrounding relation to the shaft. The active part has a radially inwardly open slot. A leg is connected to the shaft and has a tip which points radially outward from the shaft and is received in the slot of the active part. Further received in the slot of the active part is a first end of a connecting element. A fastening element secures the connecting element in a region of a second end to the leg to thereby establish a form-fit connection of the leg and the connecting element to the active part.

The invention relates to a stator (10) and to a method for producing a stator (10) for an electric machine (12), comprising a stator body (34) which has radial stator teeth (14) for receiving sub-coils (17) of an electric winding (16). An insulating plate (40) with guide elements (44) for connection wires (30, 31) is arranged between the sub-coils (17) on an end face (39) of the stator body (34), and a separately produced wiring plate (52) is arranged axially over the insulating plate (40), said wiring plate having conductor elements (63) for electrically contacting the connection wires (30, 31) with customer-specific connection plugs (56) of a controller. The wiring plate (52) is supported directly on the end face (39) of the stator body (34) by means of spacers (84).