A method to produce rotors or stators of electric machines having radial grooves into which webs of flat windings having parallel webs and winding heads connecting said webs being pulled, wherein a winding is produced on a rotating, strip-shaped flat former shorter than the winding such that windings are pulled off the former and transferred into a linear transfer device, which transports the windings to a removal position at which the windings are transferred into radial grooves of a rotor or of the transfer tool for transfer into radial grooves of a stator, wherein the former, the transfer device, and the rotor or the transfer tool being jointly rotated about an axis of rotation of the former when rotated to form windings.

A method to produce rotors or stators of electric machines having radial grooves into which webs of flat windings having parallel webs and winding heads connecting said webs being pulled, wherein a winding is produced on a rotating, strip-shaped flat former shorter than the winding such that windings are pulled off the former and transferred into a linear transfer device, which transports the windings to a removal position at which the windings are transferred into radial grooves of a rotor or of the transfer tool for transfer into radial grooves of a stator, wherein the former, the transfer device, and the rotor or the transfer tool being jointly rotated about an axis of rotation of the former when rotated to form windings.

A bending-forming jig used in bending and forming a protruding portion of a leg portion of a U-shaped conductor toward a circumferential direction, the protruding portion protruding from an axial end surface of a stator core, the bending-forming jig including a ring portion and a claw portion, the claw portion including a first abutting surface that rises from an axial end surface of the ring portion with the surface directed in the circumferential direction and abuts against a tip portion of the protruding portion from the circumferential direction, and a projecting portion that projects, at a tip end of the claw portion, in the circumferential direction from the abutting surface and abuts against the tip portion of the protruding portion from the axial direction toward the axial end surface of the ring portion.

A method to produce rotors or stators of electric machines having radial grooves into which webs of flat windings having parallel webs and winding heads connecting said webs being pulled, wherein a winding is produced on a rotating, strip-shaped flat former shorter than the winding such that windings are pulled off the former and transferred into a linear transfer device, which transports the windings to a removal position at which the windings are transferred into radial grooves of a rotor or of the transfer tool for transfer into radial grooves of a stator, wherein the former, the transfer device, and the rotor or the transfer tool being jointly rotated about an axis of rotation of the former when rotated to form windings.

A bending-forming jig used in bending and forming a protruding portion of a leg portion of a U-shaped conductor toward a circumferential direction, the protruding portion protruding from an axial end surface of a stator core, the bending-forming jig including a ring portion and a claw portion, the claw portion including a first abutting surface that rises from an axial end surface of the ring portion with the surface directed in the circumferential direction and abuts against a tip portion of the protruding portion from the circumferential direction, and a projecting portion that projects, at a tip end of the claw portion, in the circumferential direction from the abutting surface and abuts against the tip portion of the protruding portion from the axial direction toward the axial end surface of the ring portion.

The present invention relates to an automatic motor lead wire cutting and twisting assembly which may include a rack, a turntable mechanism and a power control box which are both provided on the rack. On the rack surrounding the turntable mechanism are in turn provided a wire collating mechanism, a wire teasing mechanism, a wide cutting mechanism, a single cutting mechanism and a wire twisting mechanism. A wire teasing and securing mechanism is provided on the rack above the wire twisting mechanism. A reject tank is provided on the rack below the wide cutting mechanism and the single cutting mechanism. All of the drive components of the above mechanisms are electrically connected to the power control box. Cooperating with motor production equipment, an automated production line is formed, which mainly comprises turntable mechanism, wire collating mechanism, wire cutting part, and twisting part etc., with delicate structural design, high automation level, and time and human resource saving compared to manual operation, and conduces to improve production efficiency of motor production lines.

The invention relates to a method which is used to produce rotors or stators of electric machines, wherein the rotors or stators have radial grooves, into which the webs of flat windings (26) having parallel webs and having winding heads (92) connecting said webs are pulled, wherein the flat windings (26) are prefabricated on a rotating, strip-shaped flat former (20) and the initially flat windings are pulled into the radial grooves (74) of a stator or of a transfer tool (44) for transfer into the grooves of a rotor. In order to enable continuous processing, the winding (26), according to the invention, is produced on a former (20) that is shorter than the entire winding such that the first produced windings are pulled off the former (20) before the production of the winding (26) is concluded, the pulled-off windings are transferred into a linear transfer device (28), which transports the finished windings to a removal position synchronously with the production of windings on the former (20), at which removal position the windings are transferred into the radial grooves of the stator or into the radial grooves (74) of the transfer tool (44) for transfer of the winding (26) into the radial grooves of the rotor, wherein the former (20), the transfer device (28), and the stator or the transfer tool (44) are always jointly rotated about the axis of rotation of the former (20) when the former (20) is rotated in order to form windings.

A coil winding system that comprises a rotational movement element of the needles and a head (4) mounted thereon, the rotational movement element of the needles comprising a movement shaft (2a), arranged so as to move the head (4) linearly and rotationally. The rotational movement element of the needles further comprises an electro-magnetic element of rotational movement of the head (4) integrated to the movement shaft (2a).