Patent ID: 8434212
Filing Date: 2013-05-07
Classification: H02K,Y10T

Abstract:
1. A method of producing a stator coil which is to be wound through slots of a stator core of a stator for use in an electric rotating machine using a plurality of shaping press pairs each of which has press members opposed to each other across a looped travel path along which an insulator-coated conductor wire is to be traveled, a rotary retainer through which the shaping press pairs are retained and arrayed away from each other, the rotary retainer rotating to move the shaping press pairs along the travel path, a rail cam which defines the travel path, and a cam mechanism which defines movements of the shaping press pairs in a direction substantially perpendicular to a length of the insulator-coated conductor wire traveling along the travel path, the method comprising: a coil-end portion shaping step of bringing the press members of each of the shaping press pairs close to each other in sequence to shape portions of the insulator-coated conductor wire into coil-end portions which are to be disposed outside the stator core; and an in-slot portion shaping step of advancing the shaping press pairs on the travel path and also moving selected ones of the shaping press pairs through the cam mechanism in sequence in the direction perpendicular to the length of the insulator-coated conductor wire to shape portions of the insulator-coated conductor wire into in-slot portions each of which leads to one of the coil-end portions and which are to be disposed in the slots of the stator core, thereby producing the insulator-coated conductor wire as the stator coil.