A coil (1) for a rotary electric machine is annularly formed by twelve coil members (10), each coil member (10) is configured of four coil elements (10A) to (10D), the coil elements (10A) to (10D) integrally include a plurality of sets of coil element structures each set of coil element structures including a pair of base portions (11), and four arm portions (12) and two curl portions (13), and the plurality of sets of coil element structures are annularly configured.

A clamp jig includes: a pair of clamp bodies that extend in the radial direction of a stator core and that clamp, from both circumferential sides of the stator core, an end part of an electric conductor that is inserted into and welded to the stator core; and a sandwiched part that is supported so as to be able to rotate with respect to the clamp bodies and that abuts against the end part of the electric conductor when the end part of the electric conductor is clamped between the pair of clamp bodies. The sandwiched part has a plurality of abutting surfaces that can abut the end part of the electric conductor in a direction of rotation of the sandwiched part.

An apparatus for manipulating a material is provided. The apparatus may comprise one or more stator coils arranged in a three-dimensional configuration, and a surface on which at least one carrier is configured to move. The stator coils of the apparatus may be configured to generate an electromagnetic field for driving the carrier on the surface to manipulate a material.

A method, a processing line and components of the processing line for making a stator for electric motors, and the resultant stator. The conducting wire is wound in coils having at least one straight portion which is inserted into a corresponding stator sector. The sector is thus deformed to move its teeth close to each other and to close the straight portion of the coil. Multiple stator sectors so made are assembled together to form a stator complete with windings. During the production of stator sectors, the coils and/or stator sectors are rototranslated to bring them to the final position they must take inside the finished stator. Measures are provided to maximize the filling factor, to minimize torque ripple phenomena, to minimize noise and the vibrations of the electric motor achieved with the stator, and to maximize its performance, under other equal conditions.

A coil for an electric machine including a conductive strand having a first end, a second end, and a plurality of windings between the first and second ends and an electric insulating body within which the conductive strand is at least partially encased, wherein at least a portion of the insulating body includes perforations that allow a coolant to penetrate into the insulating body to cool the coil during use of the electric machine. A method of making the coil includes molding or printing the insulating body about the conductive strand so as to have perforations therein.

A method for forming a coil that is formed by winding a flat rectangular conductor wire a plurality of times, the method includes forming, in the coil end portion, an offset portion bent in a stacking direction of the flat rectangular conductor wire with an offset in the stacking direction of the flat rectangular conductor wire by an amount corresponding to a width of the single flat rectangular conductor wire by moving the outer die on the one side in the divided outer die relative to the outer die on the other side in a direction along the stacking direction.

A winding apparatus 23 forms a rectangle-tubular edgewise coil 1 by alternately repeating bending of a rectangular conductor 2 in a clockwise direction in a plan view in an edgewise manner and feeding of the rectangular conductor 2. The winding apparatus 23 includes a bending jig 31 configured to bend the rectangular conductor 2, five sway-prevention guides 50 arranged at regular intervals on the same circumference to prevent the edgewise coil 1 from losing its shape, the five sway-prevention guides 50 being configured so that when the rectangular conductor 2 is bent in the edgewise manner, the edgewise coil 1 is sandwiched between two adjacent ones of the five sway-prevention guides 50 in the clockwise direction, and a guide holding member 51 configured to be rotationally driven in synchronization with the bending of the rectangular conductor 2 in the edgewise manner and the feeding of the rectangular conductor 2.

A generator to generate electrical power from rotational motion and a method of making the generator. The generator includes a rotor including a plurality of magnetic poles; and a stator including a magnetic core comprising a body and teeth extending radially from the body and defining a plurality of slots therebetween. The stator also includes a first three-phase winding and a second three-phase winding, each of the first three-phase winding and the second three phase winding including first, second, and third phase windings comprised of coils individually wound around each of the teeth. At least two coils of each of the first, second, and third phase windings of the first three-phase winding and the second three phase winding are individually wound on teeth positioned next to each other.

Provided is a rotor capable of improving the reliability of a connection between a lead conductor and a terminal member. A stator includes a winding wound around a stator core and having a lead conductor at an end thereof, and a terminal member having a connection portion to the lead conductor of the winding. The connection portion of the terminal member includes a winding-side connection portion that fixes the lead conductor, and a leading-end-side connection portion that fixes a portion closer to a leading end of the lead conductor than the winding-side connection portion.

Coils that constitute an armature winding are produced by winding a conductor wire that has a rectangular cross section, the coils each include: four rectilinear portions that are inserted into a pair of slots; and three coil end portions that link the four rectilinear portions consecutively by each connecting together end portions of two selected rectilinear portions, the coils being mounted into the armature core so as to be arranged at a pitch of one slot in a circumferential direction, the coil end portions include: a bulging portion that protrudes axially outward in a convex shape; and oblique portions that link the two connected rectilinear portions and the bulging portion, the bulging portion has a crank portion that displaces radial positions of the two connected rectilinear portions by a set amount, and a cross-sectional area of the bulging portion is smaller than a cross-sectional area of the oblique portions.