METHOD FOR MANUFACTURING STATOR
An object of the invention is to provide a method for manufacturing a stator of a rotating electric machine that can reduce the size of a coil end. According to the invention, a method for manufacturing a stator, which includes a stator core and a stator coil to which ends of a plurality of substantially U-shaped segment coils inserted into slots of the stator core are connected, includes twisting the end of the segment coil using a twisting jig 600 . In the twisting, in a state in which the end of the segment coil is inserted into a groove portion 610 of the twisting jig, an edge portion 620 forming a part of the groove portion 610 is used as a twisting fulcrum, and a load is applied to the segment coil to forma press trace of the edge portion on the segment coil.
1 . A method for manufacturing a stator that includes a stator core and a stator coil to which ends of a plurality of substantially U-shaped segment coils inserted into slots of the stator core are connected, the method comprising twisting the end of the segment coil using a twisting jig,
wherein, in the twisting, in a state in which the end of the segment coil is inserted into a groove portion of the twisting jig, an edge portion forming a part of the groove portion is used as a twisting fulcrum, and a load is applied to the segment coil to forma press trace of the edge portion on the segment coil.
2 . The method for manufacturing the stator according to claim 1 , wherein
the groove portion includes the edge portion serving as a twisting fulcrum at a plurality of places, and
a load is applied to the segment coil to form a press trace of the edge portion at the plurality of places on the segment coil.
3 . The method for manufacturing the stator according to claim 1 , wherein a groove of the twisting jig has a constant groove width in a depth direction.
4 . The method for manufacturing the stator according to claim 1 , wherein
the segment coil is coated with an insulating coating except for a part of a region including the end, and
a region of the segment coil not covered with an insulating film is brought into contact with the edge portion of the twisting jig to perform twist-molding.