Stator manufacturing and testing method and apparatus

H - Electricity – 02 – K

Patent

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Details

H02K 15/04 (2006.01) G01R 31/06 (2006.01) H01R 31/06 (2006.01) H02K 15/095 (2006.01) H02K 15/00 (2006.01)

Patent

CA 2183879

Stator coils having lead wires inserted into temporary wire clamps (36) at a winding station are electrically tested before the coil lead wires are removed from the temporary clamps. In one aspect, the clamps each include a jaw (54) formed with a wire-engaging surface (88) which scrapes the insulating coating off from a lead wire as it is inserted therein. The clamps are electrically connected to terminal members (90) which are engageable by electrical test terminal members (100). In a modification, the clamps include a wire-scraping jaw having, in addition to a body formed with a sharpened or knife edge, a shield having wire-guiding surfaces engageable by a lead wire being inserted into the clamp. The wire-guiding surfaces are located adjacent the knife edge and are so positioned that the depth of the insulated wire scraped or cut away by the knife edge is only a few thousandths of an inch.

Des bobines de stator, dont les fils de connexion sont introduits dans des serres-fils temporaires (36) au niveau d'une station d'enroulement, sont soumises à un essai électrique avant le retrait desdits fils des serres-fils temporaires. Dans un mode de réalisation, les serres-fils comportent chacun une mâchoire (54) pourvue d'une surface de contact avec le fil (88) qui racle le revêtement isolant, afin de l'enlever du fil au cours de son introduction. Les serres-fils sont raccordés électriquement à des bornes (90) venant en contact avec des bornes d'essai électrique (100). Dans une variante, les serres-fils comprennent une mâchoire raclant le fil, et comportant, en plus d'un corps pourvu d'un bord aiguisé ou coupant, une protection possédant des surfaces de guidage de fil en contact avec un fil de connexion qui est introduit dans le serre-fils. Les surfaces de guidage sont contiguës au bord coupant et sont positionnées de telle façon que la profondeur du fil isolé raclée ou supprimée par le bord coupant n'est que de quelques millièmes de pouce.

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