Method for manufacturing stator for rotary electric machine

A method for manufacturing a plurality of stators for a plurality of rotary electric machines in which a stator coil for each stator is formed of a plurality of coil pieces in a form of segment coil, the method comprising:

• a first disposing process of disposing a first workpiece for a first stator in a first station;
• a first welding process of completing welding of a first part of a first stator coil in the first workpiece in the first station;
• a second disposing process of disposing a second workpiece for a second stator in a second station;
• and
• a second welding process of completing welding of a second part of a second stator coil in the second workpiece in the second station,
• wherein
• the first welding process includes a first irradiation process of irradiating a first coil piece of a first welding target related to the first part with a first laser beam for welding,
• the second welding process includes a second irradiation process of irradiating a second coil piece of a second welding target related to the second part with a second laser beam for welding, and
• the first irradiation process and the second irradiation process have a time difference, and the first laser beam and the second laser beam used in each of the first irradiation process and the second irradiation process is generated based on a common oscillator.