Abstract: The innermost first segment layer and the second segment layer adjacent thereto in a radial direction are twisted using a twisting jig unit including an inner twisting jig and an outer twisting jig, then the twisting jig unit is replaced with another twisting jig unit including an inner twisting jig and an outer twisting jig, and the third segment layer and the fourth segment layer adjacent thereto are twisted, and then the twisting jig unit is replaced with still another twisting jig unit including an inner twisting jig and an outer twisting jig, and the fifth segment layer and the sixth segment layer adjacent thereto are twisted.

Abstract: Coil segments of the same phase are inserted into each group of circumferentially consecutive three slots. Assuming that the grouped three slots are A, B, and C, and six groups are U1 to U6, respectively, and that slot y of group Ux are slot Uxy, a coil starting from the slot U1A is wired to pass through one turn of a stator in the order of slots U1A?U2B?U3B?U4C?U5C?U6A, and connected to slot U1A of the next turn. In this turn, coil segments with a wide straddle width are used for the connections of U1A?U2B and U3B?U4C, and a coil segment with a narrow straddle width is used for the connection of U5C?U6A.

Abstract: An example of a positioning apparatus has a base member configured to support a stator core, a positioning tool disposed on its upper surface, and a driving mechanism for driving it. The positioning tool has a first plate and a second plate. The first plate has an inner side ring and an annular plate body fixed to the upper surface thereof, and the second plate has an outer side ring and a plate body fixed to the upper surface thereof. Insertion holes each configured to accept insertion of one of distal end pairs are formed on the plate bodies, respectively, and positioning is performed by rotating these plate bodies in opposite directions. Positions of the distal end pairs are aligned in the radial direction without the positioning tool, and then the positioning tool is set.

Abstract: A cutting unit has a support member having insertion holes, and a movable member having through holes connected thereto. The respective left sides of upper surfaces of the square through holes are first movable blades, and the respective right sides thereof are second movable blades. Firstly, the movable member 14 is moved to the right by a predetermined amount to cut peeled-off portions of segment end portions only, and then the movable member is moved to the left by a predetermined amount to cut peeled-off portions of the segment end portions only. Distal ends of the coil segments can be cut into a uniform length to enable high quality welding, through this process.

Abstract: A coil segment forming apparatus includes a second bending section for bending a first bent body consisting of a pair of slot insertion portions that are substantially parallel to each other and a linking portion for connecting the pair of slot insertion portions formed in the same plane. The bending of the first bent body is carried out in a plane perpendicular to the aforementioned same plane. The second bending section has a plurality of pairs of press jigs arranged to oppose to each other in directions intersecting with the aforementioned same plane for pinching and pressing the linking portion, and a plurality of drive mechanisms for moving respectively the plurality of pairs of press jigs in directions intersecting with the aforementioned same plane based on moving amounts respectively set depending on forming conditions of the coil segment to be formed.

Abstract: The coil assembling apparatus includes a transport means for transporting in sequence a plurality of coil segments, each of the plurality of coil segments consisting of a pair of slot insertion portions and a linking portion for coupling the pair of slot insertion portions, a segment arrangement body capable of rotating around a center axis thereof and provided with a plurality of segment hold portions annularly arranged along a circumferential direction of the segment arrangement body, into which the plurality of coil segments transported by the transport means can be respectively inserted from an outer radial directions of the segment arrangement body, and a guide means for guiding to insert one slot insertion portion of the pair of slot insertion portions of each of the coil segments into one of the segment hold portions each time the segment arrangement body rotates by a first predetermined angle.

Abstract: A manufacturing apparatus of an electrical rotating machine includes a coil segment shaping section for shaping a linear wire rod with a predetermined length into a coil segment with a predetermined shape consisting of a pair of slot insertion portions extending substantially in parallel with each other and a linking portion for coupling the pair of slot insertion portions, and a coil assembling section for assembling a coil by circularly arranging the coil segments shaped in the coil segment shaping section. The coil segment shaping section and the coil assembling section are constituted to continuously perform the shaping and the assembling of the coil segment in each coil segment unit, based on control data set depending on a coil to be fabricated.

Abstract: A coil segment forming apparatus, a coil segment forming method and a manufacturing apparatus of an electrical rotating machine, whereby coil segments with various kinds of shape can be formed without exchanging a press die, and it is not necessary that a lot of coil segments of various kinds of shape are preliminarily formed and stocked is provided. The coil segment forming apparatus includes a first bending section for bending in the same plane a linear wire rod into a predetermined shape consisting of a pair of slot insertion portions that are substantially parallel to each other and a linking portion for connecting the pair of slot insertion portions.

Abstract: A nozzle turning apparatus includes a nozzle unit that has a nozzle for sending out a wire from a tip end thereof and a nozzle holder for holding the nozzle, the nozzle unit rotatably supporting the nozzle holder, and a nozzle-holder drive member integrally provided with the nozzle unit and moved in the nozzle unit to rotate the nozzle holder. The nozzle-holder drive member is driven to turn the nozzle from a winding state to a wire processing state after a winding operation is finished. Particularly, according to the present invention, the nozzle turning apparatus includes inner unit-drive means integrally provided with the nozzle unit in the nozzle unit, for moving the nozzle-holder drive member, and outer unit-drive means independently provided from the nozzle unit outside the nozzle unit, for driving the inner unit-drive means so as to move the nozzle-holder drive member.

Abstract: An example of a positioning apparatus has a base member configured to support a stator core, a positioning tool disposed on its upper surface, and a driving mechanism for driving it. The positioning tool has a first plate and a second plate. The first plate has an inner side ring and an annular plate body fixed to the upper surface thereof, and the second plate has an outer side ring and a plate body fixed to the upper surface thereof. Insertion holes each configured to accept insertion of one of distal end pairs are formed on the plate bodies, respectively, and positioning is performed by rotating these plate bodies in opposite directions. Positions of the distal end pairs are aligned in the radial direction without the positioning tool, and then the positioning tool is set.

Abstract: Coil segments of the same phase are inserted into each group of circumferentially consecutive three slots. Assuming that the grouped three slots are A, B, and C, and six groups are U1 to U6, respectively, and that slot y of group Ux are slot Uxy, a coil starting from the slot U1A is wired to pass through one turn of a stator in the order of slots U1A?U2B?U3B?U4C?U5C?U6A, and connected to slot U1A of the next turn. In this turn, coil segments with a wide straddle width are used for the connections of U1A?U2B and U3B?U4C, and a coil segment with a narrow straddle width is used for the connection of U5C?U6A.

Abstract: A cutting unit has a support member having insertion holes, and a movable member having through holes connected thereto. The respective left sides of upper surfaces of the square through holes are first movable blades, and the respective right sides thereof are second movable blades. Firstly, the movable member 14 is moved to the right by a predetermined amount to cut peeled-off portions of segment end portions only, and then the movable member is moved to the left by a predetermined amount to cut peeled-off portions of the segment end portions only. Distal ends of the coil segments can be cut into a uniform length to enable high quality welding, through this process.

Abstract: The innermost first segment layer and the second segment layer adjacent thereto in a radial direction are twisted using a twisting jig unit including an inner twisting jig and an outer twisting jig, then the twisting jig unit is replaced with another twisting jig unit including an inner twisting jig and an outer twisting jig, and the third segment layer and the fourth segment layer adjacent thereto are twisted, and then the twisting jig unit is replaced with still another twisting jig unit including an inner twisting jig and an outer twisting jig, and the fifth segment layer and the sixth segment layer adjacent thereto are twisted.

Abstract: The coil assembling apparatus includes a transport means for transporting in sequence a plurality of coil segments, each of the plurality of coil segments consisting of a pair of slot insertion portions and a linking portion for coupling the pair of slot insertion portions, a segment arrangement body capable of rotating around a center axis thereof and provided with a plurality of segment hold portions annularly arranged along a circumferential direction of the segment arrangement body, into which the plurality of coil segments transported by the transport means can be respectively inserted from an outer radial directions of the segment arrangement body, and a guide means for guiding to insert one slot insertion portion of the pair of slot insertion portions of each of the coil segments into one of the segment hold portions each time the segment arrangement body rotates by a first predetermined angle.

Abstract: A nozzle turning apparatus includes a nozzle unit that has a nozzle for sending out a wire from a tip end thereof and a nozzle holder for holding the nozzle, the nozzle unit rotatably supporting the nozzle holder, and a nozzle-holder drive member integrally provided with the nozzle unit and moved in the nozzle unit to rotate the nozzle holder. The nozzle-holder drive member is driven to turn the nozzle from a winding state to a wire processing state after a winding operation is finished. Particularly, according to the present invention, the nozzle turning apparatus includes inner unit-drive means integrally provided with the nozzle unit in the nozzle unit, for moving the nozzle-holder drive member, and outer unit-drive means independently provided from the nozzle unit outside the nozzle unit, for driving the inner unit-drive means so as to move the nozzle-holder drive member.

Abstract: A manufacturing apparatus of an electrical rotating machine includes a coil segment shaping section for shaping a linear wire rod with a predetermined length into a coil segment with a predetermined shape consisting of a pair of slot insertion port ions extending substantially in parallel with each other and a linking portion for coupling the pair of slot insertion portions, and a coil assembling section for assembling a coil by circularly arranging the coil segments shaped in the coil segment shaping section. The coil segment shaping section and the coil assembling section are constituted to continuously perform the shaping and the assembling of the coil segment in each coil segment unit, based on control data set depending on a coil to be fabricated.

Abstract: A coil segment forming apparatus, a coil segment forming method and a manufacturing apparatus of an electrical rotating machine, whereby coil segments with various kinds of shape can be formed without exchanging a press die, and it is not necessary that a lot of coil segments of various kinds of shape are preliminarily formed and stocked is provided. The coil segment forming apparatus includes a first bending section for bending in the same plane a linear wire rod into a predetermined shape consisting of a pair of slot insertion portions that are substantially parallel to each other and a linking portion for connecting the pair of slot insertion portions.

Abstract: A coil segment forming apparatus includes a second bending section for bending a first bent body consisting of a pair of slot insertion portions that are substantially parallel to each other and a linking portion for connecting the pair of slot insertion portions formed in the same plane. The bending of the first bent body is carried out in a plane perpendicular to the aforementioned same plane. The second bending section has a plurality of pairs of press jigs arranged to oppose to each other in directions intersecting with the aforementioned same plane for pinching and pressing the linking portion, and a plurality of drive mechanisms for moving respectively the plurality of pairs of press jigs in directions intersecting with the aforementioned same plane based on moving amounts respectively set depending on forming conditions of the coil segment to be formed.

Abstract: A wire twist-preventing device in a winding machine of the invention comprises a flyer for forming a coil by winding a plurality of wires, which are arranged parallel with one another in a tape shape, around a winding frame having a plurality of winding stages which gradually increase upward in winding diameter, when the winding frame is lowered stage by stage, a dummy flyer which is rotated together with the flyer; and a dummy drum rotatably provided coaxially with the winding frame and having a circumferential length which is substantially equal to an average circumferential length of the winding frame, wherein the wires are wound around the winding frame by the flyer while they are wound around the dummy drum by the dummy flyer.

Abstract: A stator winding apparatus includes devices for adjustment of the pivot of the needle and of the stroke of the needle. The apparatus includes a winding shaft assembly which includes a drive shaft, a second shaft which reciprocates linearly in response to rotation of the drive shaft, and a third shaft in which said second shaft is coaxially received. A crank shaft is coupled by an adjustable coupling to the drive shaft and the second shaft to adjust the stroke of the second shaft. Reciprocation of the second shaft causes the needle to pivot radially inwardly and outwardly.