A rotor, in particular of an electrical machine, has a base body and at least one metallic end plate which is mounted on the base body. The base body and the at least one end plate have a continuous layer which is injection molded.

To reduce the time for producing slot insulators, a method for producing slot insulators for winding slots of a component of an electrical machine, includes supplying a strip of insulating material, cutting off an insulator strip portion from the strip, molding the insulator strip portion for adjustment to the mold of the winding slot, and inserting the molded insulator strip portion into the winding slot, wherein at least the molding and inserting steps are carried out in parallel for at least two insulator strip portions to be inserted into different winding slots. Moreover, a device for carrying out the method is described.

To reduce the time for producing slot insulators, a method for producing slot insulators for winding slots of a component of an electrical machine, includes supplying a strip of insulating material, cutting off an insulator strip portion from the strip, molding the insulator strip portion for adjustment to the mold of the winding slot, and inserting the molded insulator strip portion into the winding slot, wherein at least the molding and inserting steps are carried out in parallel for at least two insulator strip portions to be inserted into different winding slots. Moreover, a device for carrying out the method is described.

A method for producing a wire coil. Multiple windings of a ply of the wire coil including an insulated wire are wound onto a coil core of the wire core starting from a first winding up to a last winding. The last winding is hooked in an electrically insulating deflection hook of the wire coil which is fixed with respect to the coil core and the wire is deflected by the deflection hook.

In a method for producing an individual-segment rotor for an electric machine, a shaft is arranged in a mold and a plurality of laminated core segments, which are at a distance from one another, are arranged on the circumference of the shaft in a distributed manner in the mold. The laminated core segments each have a fixing contour for a form closure for radially fixing the laminated core segment on the shaft. In addition, a permanent magnet is arranged between each pair of laminated core segments. An intermediate space between the shaft and each fixing contour of the laminated core segments is filled with a curable nonmagnetic material. The curable nonmagnetic material forms a form closure with respect to the radial direction with each fixing contour, and therefore each laminated core segment is retained on the shaft by the form closure.

A method for insulating connection ends of a stator winding includes a resin placing step of placing a resin member formed of a thermosetting resin which is to be melted by heating on connection ends in a coil end portion of a stator winding of a rotary electric machine, a melting step of melting the resin member by heating to cover the connection ends with a melted resin, and a curing step of curing the melted resin after the melting step. Recesses and projections for positioning that correspond to the arrangement locations of the connection ends can be provided on a surface of the resin member.

The invention relates to a stator of an electric machine, comprising: a laminated stator core (3), which has a stator axis (2), comprises a plurality of stator teeth (5) and a plurality of stator slots (6) formed between the stator teeth (5), and is formed by a plurality of stacked stator laminations (4); and - electrical conductor elements (10), which run through the stator slots (6) of the laminated stator core (3) and are provided in order to form an electrical winding, more particularly a plug-in winding. In each of the stator slots (6), a slot insulator (11), more particularly a slot insulation paper, is provided in order to electrically insulate the conductor elements (10) from the laminated stator core (3). The stator laminations (4) each have a plurality of lamination teeth (7) and a lamination yoke (8), which connects the lamination teeth (7). The stator teeth (5) of the laminated stator core (3) are each formed by stacked lamination teeth (7) of the stator laminations (4). The stator is characterized in that, in the laminated stator core (3), at least one stator lamination (4) is provided which is rotated in peripheral direction with respect to the stator axis (2), relative to other of the stator laminations (4) of the laminated stator core (3), such that, in each stator slot (6) of the laminated stator core (3), a lamination tooth portion (12) of one of the lamination teeth (7) of said stator lamination protrudes into the stator slot (6).

The invention relates to a stator of an electric machine, comprising: a laminated stator core (3), which has a stator axis (2), comprises a plurality of stator teeth (5) and a plurality of stator slots (6) formed between the stator teeth (5), and is formed by a plurality of stacked stator laminations (4); and - electrical conductor elements (10), which run through the stator slots (6) of the laminated stator core (3) and are provided in order to form an electrical winding, more particularly a plug-in winding. In each of the stator slots (6), a slot insulator (11), more particularly a slot insulation paper, is provided in order to electrically insulate the conductor elements (10) from the laminated stator core (3). The stator laminations (4) each have a plurality of lamination teeth (7) and a lamination yoke (8), which connects the lamination teeth (7). The stator teeth (5) of the laminated stator core (3) are each formed by stacked lamination teeth (7) of the stator laminations (4). The stator is characterized in that, in the laminated stator core (3), at least one stator lamination (4) is provided which is rotated in peripheral direction with respect to the stator axis (2), relative to other of the stator laminations (4) of the laminated stator core (3), such that, in each stator slot (6) of the laminated stator core (3), a lamination tooth portion (12) of one of the lamination teeth (7) of said stator lamination protrudes into the stator slot (6).

A winding head arrangement for an electric rotating machine includes a base body including an electrically conductive material having an electrically insulating coating, and a plurality of conductors made from a first metal material and connected to the base body via the electrically insulating coating by a first additive production method.

A system and method to reduce core loss in the stator of an electric motor by first preparing laminations of the stator and/or rotor in a water jetting operation, punching or stamping operation, laser cutting operation, or similar manufacturing operation, and then subjecting the laminations to a temperature treatment in a manner such that, upon assembly into a stator and/or rotor of an electric motor and operated within expected parameters, core loss is reduced. The system and method subjects the laminations to a cold bath preferably consisting of liquid nitrogen, after stamping but preferably prior to assembly, and then stacking the laminations together for assembly as a stator and/or rotor of an electric motor.