An apparatus for assembling a permanent magnet motor rotor includes a first-end positioning assembly, a plurality of connectors, and a second-end positioning assembly. The first-end positioning assembly is utilized to fix a first-end rotor core. The second-end positioning assembly is utilized to fix a second-end rotor core. The connectors are utilized to connect and fix the first-end positioning assembly with the second-end positioning assembly. Each first longitudinal axis of each first positioning element of the first end positioning assembly is different from each second longitudinal axis of each second positioning element of the second end positioning assembly. In addition, a method for assembling a permanent magnet motor rotor is also provided.

A method of forming an electric machine lamination includes punching a sheet having a first composition to form a cavity and a compressed region at a perimeter of the cavity. The method further includes depositing, within the cavity and on the compressed region, a deposit material having a second composition different than the first composition. The method further includes scanning a beam along the deposit material to form a bound material within the cavity and on the compressed region.

A method of forming a molded rotor assembly for an electric motor includes providing a lamination stack, molding an insulative material to the lamination stack to form an integral fan and magnet retention coupled to the lamination stack, the lamination stack and the integral fan and magnet retention together forming a rotor body, and pressing a shaft into a central aperture formed in the rotor body to achieve an interference fit between the shaft and the lamination stack.

A coil forming apparatus includes: a coil winding jig being configured to wind the belt-shaped coil by inserting the plurality of straight portions of the belt-shaped coil into a respective one of the plurality of comb-shaped grooves; a coil conveying mechanism that pivotally conveys the belt-shaped coil; and guide members that guide the belt-shaped coil in an arc shape while being in contact with the side ends of the belt-shaped coil, and further allow the plurality of straight portions to be inserted into a respective one of the plurality of comb-shaped grooves in a second half portion of the belt-shaped coil upon pivot conveying. The coil conveying organizer includes a conveying rail that provides a conveying path pivotally conveying the belt-shaped coil along the coil winding jig, and a conveyor that moves along the conveying rail in a state gripping the plurality of straight portions of the belt-shaped coil.

A device for inserting electrical conductors into a machine element of an electric machine comprises a collection receptacle for providing an assembly of one or several crowns formed from electrically conductive hairpins, and an inserting device for removing the crown assembly from the collection receptacle and for introducing the crown assembly into the machine element. An associated method comprises the steps of: providing, in a collection receptacle, an assembly of one or several crowns of hairpins; removing the crown assembly from the collection receptacle; and introducing the crown assembly into the machine element which, in particular, is a stator or rotor of an electric motor.

Stator cores and methods for fabricating stator cores are provided. An exemplary stator core includes a stack of laminations. Each lamination in the stack of laminations comprises a yoke and a plurality of tooth segments fixed to the yoke.

An apparatus is provided for guiding insertion of segment type stator coils into slots of a stator core where the stator coils are in multiple layers in the radial direction, and the apparatus includes a support jig forming a penetration hole at a central portion and fixedly installed on an upper surface of a frame, a plurality of coil guide members installed in the support jig to move radially back and forth and forming guide passages connected to the slots in an up and down direction, and a driving unit installed to be connected to the coil guide members and configured to apply a back and forth operational force to the coil guide members.

The invention relates to a method for producing stranded wires, including the steps of applying an insulation layer to lines, separating the insulated lines, individually removing the insulation layer from the separated lines along a partial length of the lines, and bringing the lines together to form a stranded wire, wherein the partial lengths are arranged at the same level at least in sections for the purpose of forming a non-insulated contact region.

A device for producing a stator for an electrical machine includes a segment feed for feeding stator segments, a cylindrical press for pressing the stator segments, a housing feed for feeding stator housings, and a mandrel for receiving the stator segments. The mandrel includes an axial direction, a first region with a first radius, a second region arranged axially below the first region with a second radius that is less than the first radius, and a third region arranged axially below the second region with a third radius that is less than the second radius. In an example embodiment, the mandrel is movable from the segment feed to the cylindrical press, from the cylindrical press to the housing feed, and from the housing feed to the segment feed.

An apparatus for assembling a permanent magnet motor rotor includes a first-end positioning assembly, a plurality of connectors, and a second-end positioning assembly. The first-end positioning assembly is utilized to fix a first-end rotor core. The second-end positioning assembly is utilized to fix a second-end rotor core. The connectors are utilized to connect and fix the first-end positioning assembly with the second-end positioning assembly. Each first longitudinal axis of each first positioning element of the first end positioning assembly is different from each second longitudinal axis of each second positioning element of the second end positioning assembly. In addition, a method for assembling a permanent magnet motor rotor is also provided.