A method of manufacturing an armature coil includes steps of arranging a plurality of coil conductors of the armature coil between an end metal die and a back portion metal die on a lower metal die; pressing, with the upper metal die in a pressing direction, the plurality of the coil conductors arranged between the end metal die and the back portion metal die on the lower metal die; and removing coil conductors that become formed in a convex shape and a concave shape from the lower metal die. The upper metal die may be provided with an inclined portion on a lower metal die side of the upper metal die, and the upper metal die may be configured to be pressed such that a space is formed by the dies, the space having a width that gets gradually narrower.

A method for producing a skewed stator having a stator winding made from segmented conductors includes providing a stator core having a large number of axially layered stator core elements which form a plurality of slots extending from one end-face of the stator core to an opposite end-face, and which extend parallel in an axial direction. A large number of segmented conductors are provided which each have two leg portions extending parallel to each other and a connection portion electrically connecting the leg portions. The leg portions are introduced into the slots, and the stator core elements are rotated in a circumferential direction so they are displaced relative to each other in a circumferential direction and the slots form an inclination in a circumferential direction. The leg portions are bent by the rotation have an inclination corresponding to the slots. The stator core elements are fixed relative to each other.

A coil banding device includes a tubular nozzle penetrating the central portion of the housing, the material coil being supplied therethrough, a nozzle moving member to move the nozzle, a banding member including a pair of roller members on an upper surface of the rotating member and sandwiching the material coil discharged from the nozzle to band in a set shape, a horizontal moving member for moving the banding member horizontally through a first plate slidably mounted to the housing, a vertical moving member for moving the banding member vertically through a second plate slidably mounted on the first plate, a first rotating member for rotating the banding means with respect to a horizontal axis through a third plate rotatably mounted on the second plate, and a second rotating member for rotating the banding member about a vertical axis by a planetary gear mounted on the second plate.

An interconnection for an electric machine with hairpin winding, having a plurality of connection pins, the interconnection includes connection conductors that extend over a portion of the circumference in each instance. The interconnection has a carrier that supports the connection conductors and insulates the connection conductors relative to one another. Each connection pin is electrically conductively connected to a connection conductor. The carrier has supporting arms at the outer circumference thereof, in that the supporting arms are inclined relative to a radially extending plane as well as relative to a rotational axis of the electric machine, and the supporting arms have clamping surfaces by which they are clampable between a housing or stator carrier and a bearing shield.

An electrical machine, including a winding carrier, which has a multiple grooves and bears at least one winding. Each winding is formed by a conductor having multiple groove portions, which are led through respective grooves of the winding carrier and conductively connected by connection portions of the conductor that lie outside of the grooves; when current flows through the conductor in question from a first connection point to a second connection point of the winding in question, the current is led about an axis of rotation of the electrical machine with a first direction of revolution in all the connection portions that lie in a first conductor portion of said conductor, which first conductor portion includes multiple connection portions, and with a second direction of revolution opposite the first direction of revolution in all the connection portions that lie in a second conductor portion of said conductor.

A method for forming a coil, including the steps of: forming a spiral coil-segment forming member that includes a plurality of coil-segment forming portions each having a shape corresponding to a coil segment including a straight slot body that is accommodated in a slot of a stator core and a non-straight coil end that projects from the stator core in a rotational axis direction of the stator core; and dividing the spiral coil-segment forming member to form a plurality of the coil segments from the plurality of coil-segment forming portions.

A wire forming press apparatus includes a press having a die assembly including a displaceable upper die moved with respect to a fixed lower die. A first lever arm is manually displaced to perform a first operation in a first direction on a wire blank positioned between the upper die and the lower die. A second lever arm is manually displaced to perform a second operation in a second direction opposite to the first direction on the wire blank. A first gear set is connected to and rotated by displacement of the first lever arm. A second gear set is connected to and is rotated by displacement of the second lever arm.

A stator includes a stator core (6); and a coil wound around the stator core. The coil includes a basic coil segment (22) including a pair of first legs (31) and a first transition portion (32) disposed on a first end surface (14) side of the stator core, and a transition coil segment (23) including a pair of second legs (41) and a second transition portion (42). The second transition portion includes a pair of shoulders (43) and a pair of second rising portions (44). An inclination angle of the second rising portion is larger than an angle of the shoulder with respect to a first end surface, so that the second transition portion is in contact with the first transition portion.

An apparatus and method are for manufacturing coil members for insertion into slots of the core of a dynamo-electric machine. The coil members are formed by bending portions of an electric conductor. A feeder feeds portions of the conductor having a predetermined length through an aperture. The portions are fed along a feeding axis in a feeding direction and adjacent to an engagement member for engaging the conductor. The aperture is positioned before the engagement member in the feeding direction. Conveyors configured for moving the engagement member with respect to the aperture to engage a portion of the conductor with the engagement member in a transverse direction to the feeding axis, to bend the conductor. A pressing member selectively moves and engages the conductor to cause the conductor to engage a reaction surface proximate an aperture. The pressing member is before the engagement member in the conductor feeding direction.

A coil alignment device includes: a plate-shaped first jig having a plurality of grooves arranged along a circumferential direction so as to extend toward a radial-direction outer side; and a second jig that can contact with a segment coil inserted in the first jig. Each groove includes a storage portion extending along a radial direction and having a first length so that leg portions of the segment coils can be stored side by side in the radial direction, and a guiding portion extending from the storage portion toward the radial-direction outer side, and has a first shape so that, using, as a fulcrum, one leg portion inserted in the storage portion, the other leg portion is movable toward the storage portion. The second jig is movable to press the segment coil from a radial-direction side and store the other leg portion into the storage portion.