This laminated core is formed integrally by laminating a plurality of steel sheets including a first steel sheet and a second steel sheet. The first steel sheet is disposed as an outermost layer on one end side along the central axis and including a first exposed surface. The second steel sheet is disposed as an outermost layer on the other end side along the central axis and including a second exposed surface. In this laminated core, a difference between a maximum value and a minimum value in a distribution of a thickness that is a distance between the first exposed surface and the second exposed surface is 0.25 mm or less.

This laminated core is formed integrally by laminating a plurality of steel sheets including a first steel sheet and a second steel sheet. The first steel sheet is disposed as an outermost layer on one end side along the central axis and including a first exposed surface. The second steel sheet is disposed as an outermost layer on the other end side along the central axis and including a second exposed surface. In this laminated core, a difference between a maximum value and a minimum value in a distribution of a thickness that is a distance between the first exposed surface and the second exposed surface is 0.25 mm or less.

It is disclosed a measurement and sorting arrangement for a plurality of magnets (36) for a rotor (30) of an electrical machine (10), the rotor (30) including a rotor house (31) and a plurality of permanent magnets (36). The arrangement includes: a measurement station for measuring at least a dimension of a magnet (36) along a direction which is subject to be aligned with a radial direction of the rotor (30), a storage for storing a plurality of magnets (36) based on the results of the step of measuring (120).

It is disclosed a measurement and sorting arrangement for a plurality of magnets (36) for a rotor (30) of an electrical machine (10), the rotor (30) including a rotor house (31) and a plurality of permanent magnets (36). The arrangement includes: a measurement station for measuring at least a dimension of a magnet (36) along a direction which is subject to be aligned with a radial direction of the rotor (30), a storage for storing a plurality of magnets (36) based on the results of the step of measuring (120).

The disclosure relates to a stator assembly for an electric machine. Example embodiments disclosed include a rotor assembly for an electric machine, the rotor assembly comprising: a rotor core; a plurality of magnets arranged around the rotor core; and a cylindrical rotor sleeve surrounding the plurality of magnets, wherein the rotor sleeve comprises a laminated composite material having an array of ferromagnetic pins extending through a thickness of the rotor sleeve.

The invention relates to a method for producing a component (10) of an electric machine, wherein at least one permanent magnet means (1) of the component (10) is arranged on or at the component (10), together with at least one mechanical restraining means (2) for spatially fixing the at least one permanent magnet means (1), and the at least one mechanical restraining means (2) consists of a composite material or contains same, characterised in that, at least during a thermal treatment of the component (10), a means (3, F) is used for the targeted control of the magnetic field of the permanent magnet means (1).

The invention relates to a method for producing a component (10) of an electric machine, wherein at least one permanent magnet means (1) of the component (10) is arranged on or at the component (10), together with at least one mechanical restraining means (2) for spatially fixing the at least one permanent magnet means (1), and the at least one mechanical restraining means (2) consists of a composite material or contains same, characterised in that, at least during a thermal treatment of the component (10), a means (3, F) is used for the targeted control of the magnetic field of the permanent magnet means (1).

In a rotating body, a rotating electric machine, an electric compressor, and a method of manufacturing a rotating body, a rotary shaft having a pair of flange portions provided at an interval in an axial direction, an iron core made of a magnet that has a cylindrical shape, is divided into a plurality of pieces in a circumferential direction, and is disposed between the pair of flange portions on an outer side of the rotary shaft in a radial direction, and a holding sleeve that has a cylindrical shape, is disposed on an outer side of the iron core, and has one end portion and the other end portion in the axial direction fixed to outer peripheral portions of the pair of flange portions are provided.

In a rotating body, a rotating electric machine, an electric compressor, and a method of manufacturing a rotating body, a rotary shaft having a pair of flange portions provided at an interval in an axial direction, an iron core made of a magnet that has a cylindrical shape, is divided into a plurality of pieces in a circumferential direction, and is disposed between the pair of flange portions on an outer side of the rotary shaft in a radial direction, and a holding sleeve that has a cylindrical shape, is disposed on an outer side of the iron core, and has one end portion and the other end portion in the axial direction fixed to outer peripheral portions of the pair of flange portions are provided.

A rotor (30) for a rotary electric machine, comprising:-at least one permanent magnet (1),-a rotor mass (33) comprising laminations stacked on top of one another, comprising at least one housing (4) accommodating the permanent magnet (1), the housing (4) being delimited by at least one large face (5a) facing a long side (2a) of the permanent magnet (1), at least one lamination (6) comprising at least two cutouts (10) between them creating at least one tab (12) meeting said large face (5a) of the housing (4) and extending into the housing (4), notably in the direction of the air gap, the lamination (6) comprising one or more punches (15) formed in the tab or tabs (12) and enabling the permanent magnet (1) to be held against an opposite face (6b) of the housing (4).