US 6,249,956 B1Granted

Method and apparatus for manufacturing AC-generator's stator for vehicle

AssigneeDenso Corporation

InventorsKazutaka Maeda, Makoto Takahashi, Masaru Sugiyama, Youichi Kamakura, Nobuo Suko

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Abstract

The object of the present invention is to provide a method and an apparatus for manufacturing a stator to improve accuracy in inserting conductor segments (3, 31, 32) into slots (2). The apparatus according to the present invention comprises a conductor holder (21, 22) holding the conductor segments (3, 31, 32) and an axial-moving-mechanisms (214) moving the conductor holder (21, 22) relative to a stator core (1) in an axial direction. The conductor holder (21, 22) holds straight portions (31b, 31c, 32b, 32c) of the conductor segments (3, 31, 32) to be inserted into the slots (2) from one end of the stator core (1).

Claims7

Dependent claims

A method of twisting plural U-shaped conductor segments, each of which has a turn portion, a first-side straight portion and a second-side straight portion comprising:

inserting said first-side straight portions into holding holes of a first turning-tool and inserting said second side straight portions into holding holes of a second turning-tool, said first turning-tool and second tuning-tool being disposed to be concentric to relatively rotate in circumferential directions opposite to each other;
holding only a middle portion of each of said turn portions in circumferential directions to restrict circumferential movement of said turn portions, and
twisting said turn portions by relative rotation of said first and second turning tools while said middle portion is held in said circumferential direction.

Dependencies are inferred from the claim text.

Facts

Application: 09/333,001Filed 15 Jun 1999 · continuation
Priority: JP 9-28408216 Oct 1997
Granted: 26 Jun 2001
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H02K 15/064
Windings in slots; Salient pole windings: windings consisting of separate segments
H02K 15/0428
And consisting of single conductors, e.g. hairpins: processes or apparatus for simultaneously twisting two or more hairpins
Y10T 29/49009
Electrical device making: dynamoelectric machine
Y10T 29/49071
Electromagnet, transformer or inductor: by winding or coiling