Provided is a motor unit structure suitable for automating work in which a gear is attached to a motor shaft. The motor unit structure comprises: a motor 20 having a key 24 at a distal end of a motor shaft 22; and a gear 30 that includes a key groove into which the key 24 is inserted and an axle hole penetrating along the axial direction, the distal end of the motor shaft 22 being mated with the axle hole. The axle hole has: a mating section that is formed on the tail end side of the axle hole in the direction in which the motor shaft 22 is inserted and that mates with the motor shaft 22 inserted into the axle hole; and a non-mating section that is formed on the distal end side of the axle hole in the direction in which the motor shaft 22 is inserted and that does not mate with the motor shaft 22 inserted into the axle hole.

Provided is a motor unit structure suitable for automating work in which a gear is attached to a motor shaft. The motor unit structure comprises: a motor 20 having a key 24 at a distal end of a motor shaft 22; and a gear 30 that includes a key groove into which the key 24 is inserted and an axle hole penetrating along the axial direction, the distal end of the motor shaft 22 being mated with the axle hole. The axle hole has: a mating section that is formed on the tail end side of the axle hole in the direction in which the motor shaft 22 is inserted and that mates with the motor shaft 22 inserted into the axle hole; and a non-mating section that is formed on the distal end side of the axle hole in the direction in which the motor shaft 22 is inserted and that does not mate with the motor shaft 22 inserted into the axle hole.

It is described a method of aiding an assembly process of a rotor (30) of an electrical generator (10), in particular permanent magnet electrical generator, in particular of a wind turbine, the method comprising: arranging a rotor house (31) and a rotor bearing (32) at a static relative position; arranging an optical measurement device (140) at a static position relative to the rotor house (31) and the rotor bearing (32); measuring, using the optical measurement device (140), plural first distances (d1a, d1b, . . . ) between the optical measurement device (140) and plural first measurement locations (11a, 11b, . . . ) at the rotor house (31); determining at least one center point (zh) of the rotor house at at least one axial position or an axis (Z) of the rotor house (31) based on the plural first distances (d1a, d1b, . . . ); measuring, using the optical measurement device (140), plural second distances (d2a, d2b, . . . ) between the optical measurement device (140) and plural second measurement locations (12a, 12b, . . . ) at the rotor bearing (32); determining at least one center point (zb) of the rotor bearing (32) at at least one axial position based on the plural second distances (d2a, d2b, . . . ); changing (dv) the relative positioning of the rotor house (31) and the rotor bearing (32) in dependence of the determined center points (zb, zh) or the rotor house axis (Z) and the center point (zb) of the rotor bearing.

It is described a method of aiding an assembly process of a rotor (30) of an electrical generator (10), in particular permanent magnet electrical generator, in particular of a wind turbine, the method comprising: arranging a rotor house (31) and a rotor bearing (32) at a static relative position; arranging an optical measurement device (140) at a static position relative to the rotor house (31) and the rotor bearing (32); measuring, using the optical measurement device (140), plural first distances (d1a, d1b, . . . ) between the optical measurement device (140) and plural first measurement locations (11a, 11b, . . . ) at the rotor house (31); determining at least one center point (zh) of the rotor house at at least one axial position or an axis (Z) of the rotor house (31) based on the plural first distances (d1a, d1b, . . . ); measuring, using the optical measurement device (140), plural second distances (d2a, d2b, . . . ) between the optical measurement device (140) and plural second measurement locations (12a, 12b, . . . ) at the rotor bearing (32); determining at least one center point (zb) of the rotor bearing (32) at at least one axial position based on the plural second distances (d2a, d2b, . . . ); changing (dv) the relative positioning of the rotor house (31) and the rotor bearing (32) in dependence of the determined center points (zb, zh) or the rotor house axis (Z) and the center point (zb) of the rotor bearing.

A method for manufacturing a rotor for a rotary electric machine, the method including supporting a workpiece including a rotor core and a rotor shaft that is hollow and disposing the rotor shaft on an inner diameter side of the rotor core. Using an actuation member that is positionable in a hollow interior of the rotor shaft, having a cavity on a radially inner side, and is radially displaceable or deformable, so the actuation member radially faces or contacts a molding pressurization region on an inner peripheral surface of the rotor shaft. Applying a force in a radial direction to the actuation member while bringing the drive member into contact with a contacted portion of the actuation member in the cavity by applying a force in an axial direction to the drive member.

A method for manufacturing a rotor for a rotary electric machine, the method including supporting a workpiece including a rotor core and a rotor shaft that is hollow and disposing the rotor shaft on an inner diameter side of the rotor core. Using an actuation member that is positionable in a hollow interior of the rotor shaft, having a cavity on a radially inner side, and is radially displaceable or deformable, so the actuation member radially faces or contacts a molding pressurization region on an inner peripheral surface of the rotor shaft. Applying a force in a radial direction to the actuation member while bringing the drive member into contact with a contacted portion of the actuation member in the cavity by applying a force in an axial direction to the drive member.

With this manufacturing method, a stator provided with a plurality of segment coils, both leg portions of which are inserted into each slot of a stator core and which are overlapped in the radial direction of the stator core into a plurality of layers and aligned in an annular shape, is manufactured. In this manufacturing method, a tool having teeth is moved by a robot manipulator and thereby the teeth are inserted between the terminals of the leg portions of the respective layers. When inserted, the tool is tilted in the insertion direction of the teeth and around the axis orthogonal to the radial direction and thereby the ends of the teeth are made non-contact with the insulating coatings of the terminals of the leg portions.

With this manufacturing method, a stator provided with a plurality of segment coils, both leg portions of which are inserted into each slot of a stator core and which are overlapped in the radial direction of the stator core into a plurality of layers and aligned in an annular shape, is manufactured. In this manufacturing method, a tool having teeth is moved by a robot manipulator and thereby the teeth are inserted between the terminals of the leg portions of the respective layers. When inserted, the tool is tilted in the insertion direction of the teeth and around the axis orthogonal to the radial direction and thereby the ends of the teeth are made non-contact with the insulating coatings of the terminals of the leg portions.

Aspects of the present disclosure are directed to methods for mounting a segmented generator of a wind turbine, wherein the segmented generator for the operation of the wind turbine is formed from two or more generator segments, wherein the generator segments each have a stator segment and a rotor segment, wherein the stator segment for fastening the stator segment to a machine carrier flange of a machine carrier has a stator flange and the rotor segment for fastening to a rotor carrier of a main bearing has a rotor flange, wherein the two or more generator segments in the circumferential direction (U) each extend between two connection interfaces (V1, V2) which are formed for connection with connection interfaces (V1, V2) of generator segments arranged adjacent in the circumferential direction (U).

Aspects of the present disclosure are directed to methods for mounting a segmented generator of a wind turbine, wherein the segmented generator for the operation of the wind turbine is formed from two or more generator segments, wherein the generator segments each have a stator segment and a rotor segment, wherein the stator segment for fastening the stator segment to a machine carrier flange of a machine carrier has a stator flange and the rotor segment for fastening to a rotor carrier of a main bearing has a rotor flange, wherein the two or more generator segments in the circumferential direction (U) each extend between two connection interfaces (V1, V2) which are formed for connection with connection interfaces (V1, V2) of generator segments arranged adjacent in the circumferential direction (U).