An assembly for assembling a winding group of a bar winding for an electric machine is provided. The winding group includes a plurality of bar conductors, each bar conductor having a first leg, a second leg and a bridge portion connecting the first leg to the second leg, and being shaped so that the first and second legs are mutually spread by a predetermined distance. The assembly includes an annular fixture delimiting a plurality of slots, each slot receiving at least one portion of either the first leg or the second leg, a guiding device defining an annular containment housing, receiving at least partially the first and second legs of the plurality of legs of the plurality of bar conductors that are housed in the plurality of slots, forming at least one radial containment wall for the first and second legs.

A coil insertion guide device includes a positioning jig that positions a stator core; and a guide member that is provided in the positioning jig so as to be able to contact an end face of the stator core in an axial direction. A coil inserted into the slots along the radial direction of the stator core is guided by the guide members. The guide member includes a guide groove. The guide groove includes, on a side close to the end face of the stator core, a cuff support groove that houses and supports a cuff of one of the insulating members that protrudes from the end face of the stator core, and on a side far from the end face, a coil guide groove that protrudes toward an inside of the slot more than the cuff support groove and contacts the coil to guide movement of the coil.

A stator coil lacing machine includes a carriage pivotably connected to a frame. The carriage supports a needle assembly and cord guide assembly. The needle assembly includes a needle, a needle rotation actuator that rotates the needle about its longitudinal axis, and a needle translation actuator that moves the needle along its longitudinal axis. The cord guide assembly includes a cord guide shaft, a cord guide wag actuator that rotates the cord guide shaft about its longitudinal axis, and a cord guide lift actuator that rotates the cord guide shaft about an axis transverse to its longitudinal axis. A carriage actuator pivots the carriage relative to the frame. The carriage actuator, the needle rotation actuator, the needle translation actuator, the cord guide wag actuator, and the cord guide lift actuator cooperate in a manner that results in lacing of the stator coil.

A method of manufacturing a rotational electric machine rotor includes: forming a rotor shaft having a non-circular sectional outer shape; forming a rotor core by stacking a predetermined number of magnetic body thin plates each including a center hole having a non-circular shape corresponding to the non-circular sectional outer shape of the rotor shaft; and forming a protruding part for fixing the rotor core and the rotor shaft to each other by inserting the rotor shaft into the non-circular center hole of the rotor core and squashing the rotor shaft extending out of an axial-direction end face of the rotor core by using a predetermined swaging jig to expand the rotor shaft outward beyond an outer periphery of the non-circular section along the axial-direction end face of the rotor core.

To allow necessary movement of a magnet in a magnet insertion hole during a manufacturing process so that a magnet embedded core in which the magnet is positioned as designed can be manufactured efficiently, a lower plate (12) and an upper plate (14) configured to contact against the end surfaces of a rotor core (2) are provided with pin members (37, 39) configured to enter a magnet insertion hole (4) to allow movement of a magnet (5) in a first direction, which is a separation direction of two mutually opposing inner surfaces (4C, 4D) of a magnet insertion hole (4), and to restrict movement of the magnet in a second direction orthogonal to the first direction as viewed in the axial direction of the magnet insertion hole (4), in a state where the magnet insertion hole is not filled with resin.

A positioning and fixing apparatus that fixes a position of a stator core includes a plurality of positioners that are displaced so as to approach or separate from the stator core, by a positioner displacing unit. One of the positioners is an engager that engages with a first tab section being an engaging section. First, the engager engages with the first tab section, and then, pressers being the remainder of the positioners position a certain region of the stator core.

A multi-conductor winding for an electric machine includes a plurality of conductors having a substantially identical wire form with a plurality of end turns joining a plurality of slot segments. A first portion of the plurality of conductors is arranged in a first orientation and a second portion of the plurality of conductors is arranged in a second orientation that is a mirror image of the first orientation. The plurality of end turns of the plurality of conductors includes at least three distinct winding pitches.

An apparatus and method for quick release of a spinner head assembly of a cotton candy machine. The spinner head is snap-fit to the rotational output shaft of the motor of the cotton candy machine to prevent longitudinal separation between the two during operation. Intermeshing portions between the spinner head and the output shaft are configured to translate rotational torque between the two and thus translate rotational torque of the output shaft of the motor to the spinner head. Quick release of the head is possible by pulling on the head along the rotational axis of the output shaft to overcome the snap-fit. This allows longitudinal separation of the spinner head and disengages the intermeshing portions for complete removal of the head. Reattachment is possible by snap-fitting connection between head and output shaft.

A manufacturing device for a rotor core includes: a magnetization device that magnetizes magnet raw materials before being magnetized disposed in magnet insertion holes of the rotor core to turn the magnet raw materials before being magnetized into permanent magnets; and a detachment device that detaches the rotor core from the magnetization device. The detachment device also functions as a mounting device that mounts a jig around the rotor core when the rotor core is detached from the magnetization device.

A generator assembly apparatus is provided for merging a first annular component and a second annular component of a generator. The generator assembly apparatus includes first and second component support frames, a moving device and an adjustment device. The first component support frame supports the first component securely mounted to the first component support frame. The second component support frame supports the second component securely mounted to the second component support frame. The moving device moves one component support frame relative to the other component support frame to merge the components by inserting one component at least partially into an interior region of the other component. The adjustment device adjusts a position of a support frame such that a pre-defined separation between the first component and the second component is maintained during merging.