Method and apparatus of producing stator

A method for producing a stator formed by inserting one side of each of a plurality of prepared coils into each slot, and then inserting the other side of each of the plurality of prepared coils into another slot, comprising:

• using a jig having on an outer circumference a holding groove group formed by a plurality of slit-shaped holding grooves with pitches of integral multiple pitches of the slot of the stator core;
• projecting one side of each of the plurality of prepared coils outside the jig, and arranging each coil along the circumference of the jig with the other side inserted into the holding groove group;
• mounting on the end surface of the jig an auxiliary member having a plurality of blade portions provided corresponding to one or more inner teeth of the stator core, and holding one side of each of the plurality of prepared coils in the corresponding space between the blade portions;
• inserting the jig into the inner circumference of the stator core from the auxiliary member side, guiding one side of each of the plurality of prepared coils by the auxiliary member, and pushing one side of each of the plurality of prepared coils into a corresponding slot of the stator core by the edge portion of the jig;
• and
• thus rotating the jig arranged at the inner circumference of the stator core, arranging the jig such that the holding groove can match a corresponding slot of the stator core, pushing the other side of each of the plurality of prepared coils toward the outer circumference by a push out device, and inserting the other side of each of the plurality of prepared coils into a corresponding slot of the stator core.