A winding device including radially disposed nozzles of a same number as the number of teeth, a plurality of the nozzles simultaneously drawing out a wire to corresponding slots between respective teeth to simultaneously wind the wire between predetermined two slots that correspond to a respective one of the nozzles, includes a wire drawing and cutting mechanism configured to draw out the wire from a single spool and cut the drawn-out wire at a predetermined length, a wire storing mechanism configured to dispose the wire of the predetermined length obtained by the wire drawing and cutting mechanism in a radial manner and store the wire to a same number as that of the plurality of nozzles, and a wire conveyance mechanism configured to convey the radially disposed plurality of wires from the wire storing mechanism, to the plurality of nozzles.

A method for forming a blanked piece from a material, where the blanked piece includes a production area having a through hole and at least one caulking and connection area protruding inside the through hole. The method includes forming a blanking hole in the material in a prescribed outline, placing a guide member in the through hole, where the guide member has an abutting part contacting a protrusion of the material formed along the outline of the blanking hole. The method further includes cutting and separating the material to blank or stamp out downward the caulking and connection area, pushing back the caulking and connection area, and temporarily connecting the caulking and connection area to the material; and blanking or stamping an outer configuration of the product area from the material to which the caulking and connection area is temporarily connected.

A method for producing a cage rotor for an asynchronous machine has the following steps: providing a laminated rotor core made of a plurality of stacked rotor laminations which each have a plurality of rotor lamination grooves distributed in the circumferential direction; placing rod-shaped wire bundles, which are each made up of a plurality of wires, into the rotor lamination grooves; rotating the individual rotor laminations relative to each other, thereby deforming the wire bundles; placing short-circuit rings on both end faces of the laminated rotor core, and connecting the wire bundles to the short-circuit rings.

A method for producing a cage rotor for an asynchronous machine has the following steps: providing a laminated rotor core made of a plurality of stacked rotor laminations which each have a plurality of rotor lamination grooves distributed in the circumferential direction; placing rod-shaped wire bundles, which are each made up of a plurality of wires, into the rotor lamination grooves; rotating the individual rotor laminations relative to each other, thereby deforming the wire bundles; placing short-circuit rings on both end faces of the laminated rotor core, and connecting the wire bundles to the short-circuit rings.

A support apparatus for a guide pin contains: an accommodation tube, an upright post, a connection shaft, a holder, two side plates, a guiding trench, a roller, a guide pin, and a driving mechanism. The accommodation tube includes a fork, a through groove, and an elongated slot. The upright post includes two first coupling segments, and the connection shaft passes through the fork and is located on the accommodation tube. The holder includes two parallel joining extensions, and the two side plates are separated from each other. The guiding trench passes through the holder, and the roller is accommodated between the two side plates and is rotatably fitted with the connection shaft, and a part of the guide pin inserts into the guiding trench. The driving mechanism is accommodated in the elongated slot and is in connection with the two first coupling segments and the two joining extensions.

A brush-commutated direct-current motor comprises a stator which is fitted with a plurality of field poles, a rotor which can rotate in relation to the stator about a rotation axis and which has a plurality of pole teeth, a plurality of windings, wherein a plurality of windings are arranged on each pole tooth, a commutator which is arranged on the rotor and has a plurality of lamellas, wherein each winding is connected to one of the lamellas by means of a first winding arm and is connected to another of the lamellas by means of a second winding arm, and a plurality of short-circuiting links which each electrically connect two windings to one another and to this end are each arranged on at least two lamellas of the commutator. The plurality of windings of the plurality of pole teeth are formed by a plurality of wire turns.

A brush-commutated direct-current motor comprises a stator which is fitted with a plurality of field poles, a rotor which can rotate in relation to the stator about a rotation axis and which has a plurality of pole teeth, a plurality of windings, wherein a plurality of windings are arranged on each pole tooth, a commutator which is arranged on the rotor and has a plurality of lamellas, wherein each winding is connected to one of the lamellas by means of a first winding arm and is connected to another of the lamellas by means of a second winding arm, and a plurality of short-circuiting links which each electrically connect two windings to one another and to this end are each arranged on at least two lamellas of the commutator. The plurality of windings of the plurality of pole teeth are formed by a plurality of wire turns.

An electric machine, with a stator and a rotor. The rotor is provided with a sheet metal packet fixed to the rotor shaft of the electric machine having sheet metal plates stacked in the axial direction of the rotor. The sheet metal packet and at least one short-circuit ring arranged on an axial side of the sheet metal plate form at least one cooling channel for a cooling fluid which extends at least in sections in the radial direction of the rotor.

An electric machine, with a stator and a rotor. The rotor is provided with a sheet metal packet fixed to the rotor shaft of the electric machine having sheet metal plates stacked in the axial direction of the rotor. The sheet metal packet and at least one short-circuit ring arranged on an axial side of the sheet metal plate form at least one cooling channel for a cooling fluid which extends at least in sections in the radial direction of the rotor.

A process and a system for welding rotor coils are presented. A plurality of rotor coils are arranged on a table of a machine. A welding tool welds the rotor coils on one end using a Friction Stir Welding process. Transition pieces are each arranged between the rotor coils to create a continuous welding path. A run-off tab is placed at an end of the welding path. The welding tool is changed to a milling tool after completion of the welding. The milling tool traces back along the welding path to separate the rotor coils. The milling tool may be changed to the welding tool to repeat the process for another end of the rotor coils. The process is completely automatic and controlled by a control unit.