Method of manufacturing stator winding of rotary electric machine
AssigneeDenso Corporation
InventorsMitsuru Kato, Yasunori Kitakado, Motohiro Murahashi
Life of this patent
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Abstract
A method of manufacturing a winding includes steps of twisting U-shaped conductor segments, inserting straight portions of the twisted conductor segments in slots of a stator core, bending ends of the straight portions in a circumferential direction of the stator core and joining the ends. The method further includes a step of pressing turn portions of the U-shaped conductor segments by a turn portion twisting apparatus such that widths of the turn portions reduce in radial directions. The pressing step is performed simultaneously with the twisting step. Alternatively, the pressing step is performed after the twisting step.
Claims8
A method of manufacturing a stator winding of a rotary electric machine, comprising:
- twisting U-shaped conductor segments having turn portions, first straight portions, and second straight portions, by moving the first straight portions and the second straight portions relative to each other in circumferential directions;
- pressing the turn portions obliquely from a top, or from at least one of a radially inner side and a radially outer side, such that the pressing causes a radial dimension of the turn portions to be reduced in a radially inward direction toward a center of the turn portions;
- inserting the first straight portions and the second straight portions into slots formed on a stator core;
- bending ends of a plurality of the first straight portions and a plurality of the second straight portions in a circumferential direction of the stator core, the ends being opposite to the turn portions;
- and
- joining the ends of the first straight portions and the second straight portions.
Dependencies are inferred from the claim text.