COIL END TWISTING DEVICE FOR U-SHAPED SEGMENT COIL INSERTED INTO STATOR CORE

To prevent interference of an annular first coil end train and an annular second coil end train which is adjacent to the first coil end train in a radial direction of the stator core when twisting the first coil end train in a forward direction in a circumferential direction of a stator core and twisting the second coil end train in a backward direction in the circumferential direction of the stator core.SOLUTION: A coil end twisting device 30 is configured by including: a first annular member 32 including multiple first engage grooves 36 to which a first coil end train 22 is engaged; and a second annular member 34 including multiple second engage grooves 38 to which a second coil end train 24 that is adjacent to an inner peripheral side of the first coil end train 22 is engaged, and being disposed adjacently to an inner peripheral side of the first annular member 32. A first groove bottom face 36a of each of the first engage grooves 36 is tilted towards an outer peripheral side of the first annular member 32, and a second groove bottom face 38a of each of the second engage grooves 38 is tilted towards an inner peripheral side of the second annular member 34.SELECTED DRAWING: Figure 4 【課題】環状の第１コイルエンド列をステータコアの周方向のうち順方向に捻じ曲げ、ステータコアの径方向において第１コイルエンド列に隣接する環状の第２コイルエンド列をステータコアの周方向のうち逆方向に捻じ曲げる際に、第１コイルエンド列と第２コイルエンド列との干渉を防止する。【解決手段】コイルエンド捻じり装置３０は、第１コイルエンド列２２が係合する複数の第１係合溝３６を有する第１円環部材３２、及び、第１コイルエンド列２２の内周側に隣接する第２コイルエンド列２４が係合する複数の第２係合溝３８を有し第１円環部材３２の内周側に隣接配置される第２円環部材３４を含んで構成される。各第１係合溝３６の第１溝底面３６ａは、第１円環部材３２の外周側を向くように傾斜しており、各第２係合溝３８の第２溝底面３８ａは、第２円環部材３４の内周側を向くように傾斜している。【選択図】図４