Method and apparatus for manufacturing stator of rotary electric machine

A method for manufacturing a stator of a rotary electric machine including a cylindrical stator core with a plurality of slots and a plurality of conductor segments respectively disposed in said slots in a plurality of radially aligned layers, said method comprising:

• forming a plurality of conductor segments each having at least a straight leg;
• inserting said plurality of conductor segments into each of said slots in a plurality of radially aligned layers so that said straight legs can extend outside an end of said stator core;
• stratifying said straight legs in radially aligned layers to correspond to said layers in said slots;
• holding each of said stratified straight legs at grip portions;
• circumferentially shifting each of said grip portions of said straight portions relative to other portion thereof disposed in said slots in a prescribed circumferential direction of said stator core;
• and
• axially shifting each of said grip portions separately from another in an axial direction of said stator core to locate those of said grip portions to be connected adjacent to each other, wherein said grip portions are held so that distances thereof from said end of said stator core can be equal to each other and said grip portions are shifted the same angle in said circumferential direction and are separately shifted in said axial direction so that lengths of those of said grip portions disposed in a layer that is radially more outside are shorter.

A method for manufacturing a stator of a rotary electric machine including a cylindrical stator core with a plurality of slots and a plurality of conductor segments respectively disposed in said slots in a plurality of radially aligned layers, said method comprising:

• forming a plurality of conductor segments each having at least a straight leg;
• inserting said plurality of conductor segments into each of said slots in a plurality of radially aligned layers so that said straight legs can extend outside an end of said stator core;
• stratifying said straight legs in radially aligned layers to correspond to said layers in said slots;
• holding each of said stratified straight legs at grip portions;
• circumferentially shifting each of said grip portions in a prescribed circumferential direction of said stator core;
• and
• axially shifting each of said grip portions separately from another in an axial direction of said stator core to locate those of said grip portions to be connected to each other, wherein said grip portions are held so that the length of one of said grip portions disposed in a radially more outside layer from said end of said stator core is longer.

A method for manufacturing a stator of a rotary electric machine including a cylindrical stator core with a plurality of slots and a plurality of conductor segments respectively disposed in said slots in a plurality of radially aligned layers, said method comprising:

• forming a plurality of conductor segments each having at least a straight leg;
• inserting said plurality of conductor segments into each of said slots in a plurality of radially aligned layers so that said straight legs can extend outside an end of said stator core;
• stratifying said straight legs in radially aligned layers to correspond to said layers in said slots;
• holding each of said stratifying straight legs at grip portions;
• circumferentially shifting each of said grip portions in a prescribed circumferential direction of said stator core;
• and
• axially shifting each of said grip portions separately from another in an axial direction of said stator core to locate those of said grip portions to be connected adjacent to each other, wherein said grip portions are shifted by a holding member having a plurality of cavities while ends of said grip portions abut bottoms of said cavities.