Method of manufacturing coil for stator incorporated in rotary electric machine

A method for manufacturing a stator coil loaded on a rotary electric machine, the stator coil being wound with a plurality of phase windings, comprising:

• i) a shaping step of shaping a plurality of shaped wire members from electrically conductive wires,
• the shaped wire members each having a plurality of linear portions extending parallel to each other and being juxtaposed in a longitudinal direction of the integrated body, and a plurality of turn portions for connecting the adjacent linear portions with each other alternately at one end side and at the other end side of the linear portions, and
• the shaped wire members each having a plurality of linear superposition portions in the longitudinal direction of the integrated body, the linear superposition portions each being formed by superposing the linear portions with each other;
• ii) an integrating step of integrating a plurality of the shaped wire members to form an integrated body;
• and
• iii) a winding-up step of winding up the integrated body about a core member to form a wound body,
• the wound body having a plurality of linear stack portions in a circumferential direction of the wound body, the linear stack portions each being formed by stacking a plurality of the linear superposition portions in a radial direction,
• wherein the winding-up step comprises a process of performing curve forming by plastically deforming the turn portions of the integrated body into a curved shape during conveyance of feeding the integrated body to the core member.