A method for manufacturing a laminated iron core includes providing a plurality of annular iron core piece rows, each of which is configured by annularly arranging a plurality of divided iron core pieces including yokes and teeth, and the yokes of the annularly-adjacent divided iron core pieces in the annular iron core piece row are mutually different in shape. In the method, the annular iron core piece rows are laminated by changing a rotational angle of the newly laminated annular iron core piece row relatively to the lastly laminated annular iron core piece row laminated so that the divided iron core piece with a shape different from that of the divided iron core piece is laminated on the lastly laminated divided iron core piece.

Exchangeable stator components are selected and exchangeable rotor components are selected to transform a motor from one motor class to another motor class. A motor comprises at least two stator rings, at least two outer rotor rings, a first input, and a second input. The first input comprises an exchangeable stator component selected from a stator component group consisting of a stator spacer ring and an axially magnetized stator magnet ring, the axially magnetized stator magnet ring comprising a solid axially magnetized ring magnet. The second input comprises an exchangeable rotor component selected from a rotor component group consisting of a rotor spacer ring and an axially magnetized rotor magnet ring. The first input and the second input determine a motor class for the motor, the exchangeable stator component being exchangeable for a different exchangeable stator component from the stator component group to manufacture another motor having a different motor class, the exchangeable rotor component being exchangeable for a different exchangeable rotor component from the rotor component group to manufacture another motor having another different motor class.

In a method for manufacturing lamination stacks of controlled height in a tool, starting material is provided as continuous strip delivered from a coil or as an individual sheet. Laminations are punched from the starting material in several punching steps to a required contour of the laminations. A heat-curing adhesive is applied onto the laminations prior to performing a last punching step. The laminations are combined to a lamination stack. The laminations of the lamination stack are partially or completely heated in a lamination storage. The adhesive is liquefied by heating the lamination stack to build up adhesion and then solidified. Curing the adhesive at the liquefying temperature or solidifying the adhesive in the tool by cooling and subsequently heating the adhesive to a temperature below the liquefying temperature is possible so that the adhesive does not melt but undergoes further curing resulting in higher temperature stability.

Method for manufacturing a thin strip in a soft magnetic alloy and strip obtained A method for manufacturing a strip in a soft magnetic alloy capable of being cut out mechanically, the chemical composition of which comprises by weight: TABLE-US-00001 18% ≤ Co ≤ 55% 0% ≤ V + W ≤ 3% 0% ≤ Cr ≤ 3% 0% ≤ Si ≤ 3% 0% ≤ Nb ≤ 0.5% 0% ≤ B ≤ 0.05% 0% ≤ C ≤ 0.1% 0% ≤ Zr + Ta ≤ 0.5% 0% ≤ Ni ≤ 5% 0% ≤ Mn ≤ 2% The remainder being iron and impurities resulting from the elaboration, according to which a strip obtained by hot rolling is cold-rolled in order to obtain a cold-rolled strip with a thickness of less than 0.6 mm. After cold rolling, a continuous annealing treatment is carried out by passing into a continuous oven, at a temperature comprised between the order/disorder transition temperature of the alloy and the onset temperature of ferritic/austenitic transformation of the alloy, followed by rapid cooling down to a temperature below 200° C. Strip obtained.

A method of manufacturing a rotor is disclosed. A magnet is inserted into a magnet hole of a rotor core. The method comprises inserting an insertion member into the magnet hole having a first opening and a second opening. The method comprises fixing the magnet to the insertion member extending out from the second opening. The method comprises inserting the magnet, which is fixed to the insertion member, into the magnet hole from the second opening by pulling the insertion member extending out from the first opening in a direction separating away from the rotor core. The method comprises cutting the insertion member extending out from the first opening.

There are provided a core unit manufacturing apparatus and a core unit manufacturing method including: a molding device that fills a resin into a space portion in a core body; a resin transfer unit that transfers a resin material to the molding device to supply the resin material thereto; and a core transfer unit that carries the core body in and out of a part between a pair of dies of the molding device. The resin transfer unit and the core transfer unit are arranged such that: the resin transfer unit supplies the resin to the molding device from one side position of side surfaces of the molding device; and the core transfer unit carries the core body in and out of the molding device from the other side position of the side surfaces of the molding device, the other side position being different from one side position.

Rectangular conductor wires are often used in alternator applications requiring a high slot fill to maximize output and efficiency. However for lower output and efficiency applications, round conductor wire may increase cost competiveness in these alternators. A common lamination for a core alternatively accommodates both rectangular conductor wires and round conductor wires for different applications without any other component changes. The lamina has a slot that aligns round wire in a single row within the slot and provides a predetermined clearance from the slot opening. A stator core formed from these laminae has a relatively high slot fill factor when wound with the round wire. The same stator core can be alternatively wound with square wire to increase the slot fill factor even higher. The common lamination results in two stator configurations: a high slot fill version (round wire) and a very high slot fill version (square wire).

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.

In a method for insulating a coil winding of an active part of a rotating electric machine, the active part is impregnated with an insulating resin in a tub-like impregnation container by vacuum pressure impregnation. The active part is held in the impregnation container, after impregnation with the insulating resin, completely submerged in the insulating resin. The impregnation container together with the active part is introduced into a baking oven, and the active part is set in the insulating resin in rotation about a longitudinal axis of the active part. While the active part is rotating, the insulating resin is purged from the impregnation container and then the oven temperature is increased to a predetermined baking temperature which is maintained for a predetermined baking period. Rotation of the active part is terminated after expiration of the baking period.

A method for motor manufacturing using a clip system is illustrated. The method includes sliding a plurality of magnets onto a vertical dowel hoop, wherein the plurality of magnets are stacked on each dowel, attaching a first plate to the top of the vertical dowel hoop and a second plate to the bottom of the vertical dowel hoop, wherein the plates compress the plurality of magnets on each vertical dowel, and curing the combination of the first plate, the second plate, the plurality of magnets and the vertical dowel hoop.