A method of manufacturing a laminated core in which an adhesive can be easily applied to gaps between laminated electromagnetic steel plates is provided. A method of manufacturing a laminated core according to the present disclosure includes a first step, a second step, and a third step. In the first step, an electromagnetic steel plate laminate is formed by laminating a plurality of electromagnetic steel plates in a lamination direction. In the second step, the electromagnetic steel plate laminate is excited in a direction intersecting the lamination direction. In the third step, an adhesive is applied to gaps between the plurality of electromagnetic steel plates in the electromagnetic steel plate laminate.

A heating device 10 for laminated iron core has a laminated iron core 18 as an object to be processed, and performs a heat treatment on an adhesive agent applied to the iron core 18. The device 10 includes a center guide 24, and the center guide 24 is an outer diameter variable chuck mechanism of which an outer diameter is variable.

Various embodiments include a method for manufacturing a stack of magnetic laminations for a rotor and/or stator of an electric machine. The method includes: recording a respective physical property of each respective magnetic lamination from a plurality of magnetic laminations; determining a setpoint value for a physical variable of the stack of magnetic laminations; ascertaining a stacking sequence of the individual magnetic laminations of the plurality reducing a deviation of an actual value for the physical variable of the stack with the ascertained stacking sequence from a setpoint value in relation to stacks with other stacking sequences of magnetic laminations; and stacking the plurality of the magnetic laminations in the ascertained stacking sequence.

In an aspect of the present disclosure is an electric aircraft motor with a fully welded rotor. The motor includes a stator and a rotor. The stator includes an inner cylindrical surface and an outer cylindrical surface. The rotor includes a cylindrical portion and spokes welded to the cylindrical portion. In another aspect of the present disclosure is a method for manufacturing a fully welded rotor.

A stamping progressive die for a stator and rotor core of a motor using adhesive dispensing lamination and an adhesive dispensing process. The adhesive dispensing lamination device comprises a stamping station, an adhesive dispensing station for a first adhesive component, an adhesive dispensing station for a second adhesive component and a blanking station which are arranged on the stamping progressive die for the core of the stator and rotor of the motor, wherein an automatic stacking mechanism for core stamping sheets is arranged below the blanking station; one of the adhesive dispensing station for the first adhesive component and the adhesive dispensing station for the second adhesive component is located at an upper position of a material strip, and the other adhesive dispensing station is located at a lower position of the material strip.

A rotor core molding system, for molding magnets in an unmolded rotor core to provide a molded rotor core for an electrical motor, comprises first and second molds arranged to allow clamping at least one unmolded rotor core between the molds, a pre-adjustment arrangement for allowing to pre-adjust a distance between the molds in a preset open configuration of the molds to a pre-adjusted distance, and a mold closure arrangement for allowing to close the molds from the preset open configuration to a closed configuration by moving the molds towards one another to clamp unmolded rotor core(s) provided between the molds with a predetermined pressure in between the molds in the closed configuration. The pre-adjustment arrangement is configured to provide a relatively long-range distance movement, especially corresponding to one or more rotor core heights. The mold closure arrangement is configured to provide a relatively short-range distance movement.

A rotor, in particular for a current-excited electric machine, comprising a winding, wherein on or against the winding is arranged a support element made of a composite material comprising matrix material and fiber material.

A method is provided for producing a rotor for an electric machine, wherein the rotor comprises a shaft and a sheet metal pack arranged on the shaft, the sheet metal pack including a plurality of individual metal sheets axially stacked in succession, wherein multiple poles are provided on the sheet metal pack, around which wires are wound to form individual windings, wherein a sheet metal pack is used having multiple axially running breaches through it, wherein a tie rod is led through each breach of the sheet metal pack prior to the winding around the poles and locked at one end for the axial tensioning of the sheet metal pack, after which the wires are wound around the poles. A rotor produced according to the described method and an electric machine comprising a rotor are also provided.

A permanent magnet (PM) for use in an electric machine including at least one cavity containing a phase change material (PCM) integrated with said PM, the PCM having a phase transition temperature between about 80? C. to about 200? C., and preferably a latent heat of at least 50 KJ/kg, wherein in PM, each cavity is a blind, elongated chamber extending from one side of the PM, having two smaller dimensions and a larger dimension of each cavity is oriented substantially in a same direction, wherein the PM is composed of a hard magnetic phase, a binder phase and PM having an ultimate tensile strength of at least 150 Megapascal (MPa), wherein PM is mounted on a rotor of an electric machine and is formed by cold spray additive manufacturing (CSAM)

This bonded and stacked core manufacturing method is a method for manufacturing a bonded and stacked core by performing press working on a strip-shaped steel sheet with a press working oil applied to one surface or both surfaces thereof, applying an anaerobic adhesive and an instantaneous adhesive to one surface of the strip-shaped steel sheet to obtain a plurality of steel sheet components, and stacking and bonding the steel sheet components, in which a curing accelerating layer is formed by applying an anaerobic adhesive curing accelerator and an instantaneous adhesive curing accelerator to one surface or both surfaces of the strip-shaped steel sheet before the press working oil is applied, and drying the adhesive curing accelerator and the instantaneous adhesive curing accelerator.