A joining method for joining a coil mat to the stator of an external rotor motor by: providing a coil mat having straight wire sections connected by winding heads, providing a stator with stator slots opening radially outwards, winding up the coil mat on a winding carrier which has radially outwardly opening winding carrier receiving slots, transferring the coil mat from the winding carrier to a transfer tool which has radially inwardly opening transfer tool receiving slots, and transferring the coil mat from the transfer tool to the stator. In addition, a joining device, a control unit and a computer program for carrying out the joining method.

A method for pressing a reinforcing sleeve onto a rotor of an electric motor, including: affixing a press ring having a stop to the reinforcing sleeve so that the stop abuts an end face of the reinforcing sleeve, and at least one annular and/or ring-segment-shaped section of the press ring embraces at least one annular and/or ring-segment-shaped section of the reinforcing sleeve that terminates at the end face of the reinforcing sleeve; and pressing the reinforcing sleeve onto the rotor, the reinforcing sleeve being centered relative to the rotor so that a longitudinal axis of the reinforcing sleeve is aligned with a longitudinal axis of the rotor, and a pressing force being applied to the pressing ring affixed to the reinforcing sleeve.

A rotor for a rotary electric machine includes a rotor shaft configured to rotate around an axis of rotation, a rotor body formed of a stack of laminations having a plurality of teeth projecting radially and being configured to be mounted coaxially on the rotor shaft. A field coil is wound around each tooth of the plurality of teeth. At least one tooth of the plurality of teeth includes at least one weld seam on a lateral face of the corresponding tooth, the lateral face extending radially and axially along the axis of rotation.

A magnet insertion device includes a magazine, a pusher, an aligning member, and an insertion mechanism. The magazine includes a housing body and an extruding portion configured to move magnets in the housing body in a stacking direction to sequentially extrude the sets of the magnets from the housing body. The pusher is configured to move each set of the magnets by collectively pushing the set of the magnets. The aligning member is configured to align the magnets in each set by coming into contact with opposite sides in the arrangement direction of the set of the magnets when the magnets are pushed and moved by the pusher. The insertion mechanism is configured to collectively grip each set of aligned magnets and insert the magnets into a magnet housing hole.

Presented are electric machines with rotor shaft-mounted heat pipes/vapor chambers thermally coupled to endcap-integrated heat sinks, methods for making/using such machines, and vehicles equipped with such machines. An electric machine includes an outer housing, a stator assembly mounted to the housing, and a rotor assembly rotatably mounted adjacent the stator assembly. The stator assembly includes one or more stator windings mounted to an annular stator core. The rotor assembly includes one or more electromagnetic rotor windings mounted to a cylindrical rotor core. A rotor power transfer circuit (PTC) is electrically connected to the rotor assembly to electrify the rotor winding(s). A rotor shaft is attached to the rotor core to rotate in unison therewith. One or more heat pipes are mounted on the rotor shaft's outer surface and project axially between the rotor PTC and rotor core. Each heat pipe passively extracts and transfers thermal energy from the rotor PTC.

An armature manufacturing method includes an insulating member disposing step for disposing an insulating member on a core so that first portions of the insulating member protrude to one side in an axial direction from end faces of tooth portions on the one side in the axial direction. The armature manufacturing method includes a bending step for bending, toward each of the tooth portions, the first portions of the insulating member that protrude from the end face of each of the tooth portions on the one side. The armature manufacturing method includes a winding looping step for looping a winding around each of the plurality of tooth portions on which the bent first portions are disposed.

A manufacturing apparatus for an armature includes a fixed die, a movable die that includes a sprue, and a stripper plate located between the movable die and the fixed die. The stripper plate defines a runner and a gate. The runner extends in a movement direction of the movable die and extends in a direction that is orthogonal to the movement direction. The stripper plate includes a first segment and a second segment that are divided in the movement direction. The stripper plate further includes a first biasing portion that biases the first segment and the second segment to move away from each other in the movement direction. The first segment defines the runner together with the movable die. The second segment defines the runner and the gate.

A superconducting motor comprising a rotor, a stator on the outside of the rotor penetrated by an even number of holes, for each pair of holes, a coil comprising a U-shaped base and U-shaped sheets and made from a superconducting material, in which the sheets are fixed to one another and to the base, in which each column of a coil is inserted into one of the holes of the pair of holes.

A method and a tool for manufacturing a laminated core of an electric machine includes a fluidic component being applied on at least one portion of at least one side of a metal sheet using at least one applicator employing an inkjet printing technique. At least one blank of the at least one metal sheet including the at least one fluidic component is die cut. Multiple blanks are aligned with regard to each other for forming the laminated core.

A manufacturing method of a laminated iron core includes: a step of pressing, with a die (2), an electrical steel sheet having a coating containing an adhesive that exhibits adhesive ability through heating, provided to a sheet surface thereof, to obtain a unit iron core (1); and a step of laminating the unit iron cores (1) pressed with the die (2), and heating the sheet surface of the unit iron core (1) of an uppermost layer at a plurality of partial regions to make the unit iron core (1) of the uppermost layer to be partially adhered to the unit iron core (1) of a lower layer thereof at a plurality of regions. As above, by performing the presswork and the lamination substantially simultaneously as a series of operation, it is possible to increase the efficiency of manufacture of the laminated iron core without increasing the man-hour.