Nsk-warner Kabushiki Kaisha

Akira Tagawa

Mikio Uchida

Akihiro Ishida

A method for manufacturing an assembly of an outer ring of a one-way clutch and a stator housing of a torque converter is provided. An outer ring is provided and its outer peripheral surface is subjected to a plastic deformation process, such as forging, to thereby form an up and down structure which extends from one side only halfway through to the outer side of the outer ring. Preferably, the main body of the outer ring is deformed such that side projections are formed at spaced intervals in a circumferential direction to thereby define a spline-like structure. Then, the outer ring is machined only at its inner peripheral surface and its side surface which is opposite to the side where the up and down structure is formed. Thus, the outer peripheral surface and the side surface where the up and down structure is formed are left unmachined. Then, a stator housing is formed either by molding or casting using the outer ring thus formed as an insert. Therefore, there is obtained an assembly of an outer ring of a one-way clutch and a stator housing having an integrated structure.

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Chigasaki, Japan

Akira Tagawa