A method for manufacturing a laminated iron core includes forming laminated blocks to form each laminated block, laminating the laminated blocks to form a laminated iron core, and crimping dowels of the iron core pieces to each other. The method further includes measuring a plate thickness of a punchable portion of a workpiece, calculating an estimated lamination thickness, measuring a lamination thickness of the laminated iron core, and calculating a corrected value. The measuring the lamination thickness is performed before the crimping the dowels. The calculating the estimated lamination thickness performed after the calculating the corrected value includes calculating the estimated lamination thickness by accumulating a corrected plate thickness. The forming the laminated blocks includes adjusting the number of laminations of the iron core pieces in each of the laminated blocks such that the lamination thickness of the laminated iron core approaches the estimated lamination thickness.

A method of monitoring thermal parameters of a thermal model of an electrical machine, the method including: a) updating thermal parameter values of the thermal model based on temperature measurements of the electrical machine, b) estimating future values of the thermal parameters based on the updated thermal parameter values by means of a degradation model, which takes past behaviour of the thermal parameters into account, and c) determining a future degradation and/or a remaining useful life of the electrical machine based on the future values.

According to one disclosed method, a magnet segment may be slid linearly along a first surface and onto a second surface of a back iron of a rotor, wherein the first surface is disposed at or above a rim that extends upwardly from the second surface at an outer edge of the back iron to enable the magnet segment to slide over the rim before the magnet segment is slid onto the second surface. According to another disclosed method, a first end of a magnet segment may be pressed against an elastic member located at an inner portion of a back iron for a rotor so that force exerted by the elastic member pushes a second end of the magnet segment against a rim located at an outer portion of the back iron.

An electric motor coil winder is provided. A cutting length of a wire used for an electric motor coil is controlled according to the location of a slot formed at a stator inside an electric motor so that a wasted wire can be reduced and a manufacturing cost and energy thus can be reduced, a cutting cover is installed at a cutting part to prevent a cut wire from popping up and protect the inside of the cutting part, and the length of a wire required for a process is set to enhance production efficiency.

The present disclosure relates to a manufacturing method for a laminated core, which manufactures the laminated core by bonding lamina members. The manufacturing method includes: a laminated core forming step of forming a laminated core by sequentially forming and laminating lamina members having a predetermined shape while passing a thin sheet having an adhesive layer formed on a surface thereof; a magnet insertion step of inserting a magnet into a magnet insertion hole of the laminated core; a resin filling step of filling resin in the magnet insertion hole of the laminated core into which the magnet is inserted; and a curing step of heating the resin-filled laminated core to cure the adhesive layer of the lamina member, so that the laminated core is integrated and the filled resin is simultaneously cured.

A manufacturing method for a laminated iron core, the manufacturing method includes: a punching process of punching a metal sheet to form a plurality of punched members including a first punched member and a second punched member; and a laminating process of forming a laminated body by laminating the plurality of punched members while changing a rotational lamination angle each time one or more punched members are laminated. In the laminating process, the plurality of punched members are laminated such that the rotational lamination angle is the same between the first punched member and the second punched member adjacent to each other in a boundary portion between two or more of the first punched members that are continuously laminated and two or more of the second punched members that are continuously laminated.

The invention relates to a method for producing an electric motor housing, comprising the steps: (a) positioning at least stator part (30) in a support body interior chamber of support body (22), (b) arranging a casting core (42) on the support body (22), (c) then casting the liquid metal around the support body (22) and the casting core (42), resulting in a torque-proof connection between stator part (30) and a casting (26) as a result of the solidification of the liquid metal.

A joining method for inserting a coil winding into a component of an electrical machine by: providing the component with an annular arrangement of inwardly opening slots which are bounded by inwardly projecting slot boundaries, providing the coil winding wound with a coil diameter which is equal to or smaller than an inner diameter of the annular arrangement inside the annular arrangement, the coil winding having a plurality of straight conductor sections connected by winding heads, providing radially movable support fingers axially adjacent the slot boundaries, expanding the coil winding outwards while inserting the conductor sections of the coil winding into the slots, and moving the support fingers radially along with the coil winding to guide conductor sections and/or winding heads during insertion.

A rotor of a dynamo-electric permanently excited machine has a predefinable number of poles, with the laminated core having laminations, which each form sectors with at least two different configurations in a predefinable axial order and rotation or axial order and rotation and overlap. The laminations, independent of the configuration of the sectors, each have a shaft bore, an identical number of poles or sectors, axially aligned cut-outs and an identical outer diameter. Sectors of a first configuration have elements for distributing a potting compound or an adhesive within the laminated core, and sectors of a second configuration have retaining elements for mechanical strength of the laminated core. The flux barriers and gaps running substantially axially between the permanent magnets and the laminated core surrounding same, are filled with the adhesive and/or a potting compound.

A thixotropic potting compound for fixing a permanent magnet in a rotor of a permanently excited synchronous machine includes a base resin material formed as a two-component reactive resin containing a predefinable amount of a thermally conductive additive and/or an additive affecting a gelling of the potting compound, wherein Aerosil fumed silica is present in a range between 0.1-0.5% by volume.