Patent ID: 7856701
Filing Date: 2010-12-28
Classification: H02K,Y10T

Abstract:
1. A manufacturing method of a coil assembly of a rotary electric machine in which the coil assembly includes a plurality of coil members each of which is formed by a winding step of winding a wire so as to form a plurality of first portions, a plurality of second portions, a plurality of first turning portions each of which connects one of the first portions and one of the second portions that is located on one side of and adjacent to the one of first portions, and a plurality of second turning portions each of which connects one of the first portions and one of the second portions that is located on the other side of and adjacent to the one of first portions, the method comprising: a step of setting a prescribed length L and a prescribed pitch p; a first wire feeding step of feeding the wire onto a turning base surface formed on an end surface of a rotary plate configured to rotate about an axis running perpendicular to the end surface to thereby set a length L for one of the first portions based on the prescribed length L while the turning base surface is stationary; a first turning step of turning, after the first wire feeding step, the wire with the turning base surface to thereby form one of the first turning portions and one of the first portions; a first pushing step of pushing, after the first turning step, the one of first portions along an axial direction of the axis of the rotary plate so that the one of first portions goes away from the turning base surface by the prescribed pitch p while the rotary plate is stationary with respect to the axis running perpendicular to the end surface; a second wire feeding step of feeding, after the first pushing step, the wire onto the turning base surface to thereby set a length L for one of the second portions based on the prescribed length L while the turning base surface is stationary; a second turning step of turning, after the second wire feeding step, the wire with the turning base surface in the same direction as the wire was turned in the first turning step to thereby form one of the second turning portions and form one of the second portions between the one of first turning portions and the one of second turning portions; and a second pushing step of pushing, after the second turning step, the one of second portions along the axial direction of the axis of the rotary plate so that the one of second portions goes away from the turning base surface by the prescribed pitch p while the rotary plate is stationary with respect to the axis running perpendicular to the end surface.