Patent ID: 8256094
Filing Date: 2012-09-04
Classification: H02K,Y10T

Abstract:
1. A method of shaping an electric wire for a stator coil of an electric rotating machine, comprising: providing an electric wire that has a substantially rectangular cross-section and is pre-formed to include a plurality of straight portions and a plurality of turn portions, the straight portions extending straight, in parallel with each other and spaced apart at predetermined intervals, each of the turn portions connecting one adjacent pair of the straight portions, each of the turn portions including a specific part, and all of the specific parts of the turn portions being identical to each other regardless of the intervals between the straight portions; the method further comprising: a clamping step in which the specific part of one of the turn portions of said pre-formed electric wire is clamped in a widthwise-direction of the specific part; a holding step in which two different sections of said clamped specific part are respectively held by first and second holders in a thickness-wise direction of the specific part, which is perpendicular to the widthwise-direction; and a shaping step in which one of the first and second holders is moved relative to the other in said thickness-wise direction of the specific part, thereby correspondingly moving one of said two different sections relative to the other of said two different sections in said thickness-direction, to form a crank-shaped portion in said specific part.