A conductor forming device includes a holder that holds a plurality of straight parts of a plurality of conductors while arranging the plurality of straight parts in parallel to each other, the plurality of straight parts forming a group of straight parts the plurality of conductors. The holder includes a fixed block on which a plurality of grooves each having a fixed side contract part capable of contacting with one end in width directions of the straight part are provided at equal intervals, a plurality of movable blocks that are disposed to be movable in the respective grooves on the fixed block and each have a movable side contact pars capable of contacting with an opposite end in the width directions of the straight part, and a driver capable of driving the movable blocks independently from each other.

A method and an apparatus are provided for manufacturing a stator with a plurality of hairpin conductors. For inserting the hairpin conductors (15, 15) into the slots (11) of a stator core (12) a stator core template (22) is provided. Hairpin conductors (15) are axially inserted into slots (21) of the stator core template (22) such that the hairpin conductor (15) is arranged at a first position (P1) within said slot (21). The hairpin conductor (15) is then moved within said slot (21) to a different position (P2). A complete nest (20) of hairpin conductors (15) formed within the stator core template (22) is then transferred to the stator core (12).

The invention relates to a method and device (10) for forming winding elements, in particular hairpin winding elements, from a conductor piece (12).

An object of the invention is to increase productivity of a coil.

A coil forming device according to the present invention includes: a first bending unit 200A that performs a compression bending process with respect to a linear conductor; and a second bending unit 200B that performs a draw bending process with respect to the linear conductor, wherein the first bending unit 200A and the second bending unit 200B are integrated in one device, and wherein the first bending unit 200A and the second bending unit 200B are switched to access one linear conductor so as to perform the compression bending process and the draw bending process onto the one linear conductor.

Grooves are formed at equal intervals in the circumferential direction on an outer peripheral edge of a circular block, and inner rods are housed in these grooves and arranged to be movable radially along radial directions. The outer rods are provided to be movable radially along radial directions, and respectively face the inner rods. Respective one slot insertion portions of coil segments are inserted into gaps between the inner rods and also into the holding member. The respective other slot insertion portions are inserted into gaps between the outer rods. Thereafter, the whole outer rods are rotated to rotate the coil segments around the slot insertion portions, then the holding member is lowered, and the whole outer rods are further rotated without interference between the holding member and the slot insertion portions to bring the coil segments into close contact with one another.

The invention relates to a method for provided shaped rods, which are intended for the use in electric windings of electric machines. The invention comprises providing conductor wire (11); positioning the conductor wire (11) and a bending axis (26) for the conductor wire relative to one another, such that the longitudinal axis (18) of the conductor wire (11) and the bending axis (26) run at an oblique angle relative to one another; holding, gripping, or supporting the conductor wire (11) in a first and second section (20, 21) of the conductor wire (11); and carrying out a swivel bending or folding movement (30) between the first and second section (20, 21) of the conductor wire (11) about the bending axis (26). Thereby, a simultaneous forming of a combined torsional and also curved section (17, 19) in the conductor wire (11) and also a lateral offset (16) between the first and second section (20, 21) of the conductor wire (11) is made possible. Moreover, a correspondingly shaped shaped rod is indicated.

A stator for an electric machine is provided having a winding with plurality of interconnected conductors assigned to one or more phases. The ends of at least some of the conductors protrude axially or radially beyond the winding at the inner circumference or at the outer circumference of the winding, wherein an interconnection ring, to which the conductors are connected, is positioned axially or radially on the winding. The ends of in each case at least two conductors assigned to one phase protrude radially or axially outwards and are connected to a power connection arranged radially outside the winding.

Method for stamping multiple coil sides (96) for a stator winding (18), characterized in that the multiple coil sides (96) are arranged in a grooved row (90), the shaping process taking place at a force (F), the direction of which runs at an angle (α) greater than zero relative to the grooved row (90).

An object of the present invention is to suppress blow holes in welding using tough pitch copper.

A welding method includes a first step of heating at least a portion of a first conductor and a second conductor containing copper, and a second step of adding a filler metal containing phosphorus while melting the first conductor and the second conductor so that a phosphorus content rate in a welded portion at which an end portion of the first conductor and an end portion of the second conductor are connected to each other is equal to or more than 0.1%.

The basic coil segment is arranged in the slot such that at least part of the basic coil bent portion is arranged outside the insertion end, in an axial direction parallel to a center axis of the stator core and the pair of the basic coil insertion end portions is arranged outside the welded end, in the axial direction. The power coil segment is arranged in the slot such that the power coil lead end portion and at least part of the power coil connection portion are arranged outside the insertion end, in the axial direction and the power coil insertion end portion is arranged outside the welded end, in the axial direction. The height of an end surface of the basic coil segment from the insertion end is equal to the height of an end surface of the power coil segment from the insertion end.