A manufacturing method of the outside joint member of a uniform adjustable joint

Japanese Patent JP6104598

B2

Provided is a manufacturing method for an outer joint member (11) of a constant velocity universal joint (10), the manufacturing method comprising: forming a cup member (12a) and a shaft member (13a) of medium carbon steel; performing, as manufacturing steps, a machining step and a heat treatment step on the cup member (12a) after integrally forming a tubular portion (12a1) and a bottom portion (12a2) of the cup member (12a) by forging, the machining step comprising forming a joining hole (50) in a thickness of the bottom portion (12a2) to prepare the cup member (12a) as a finished component; performing, as manufacturing steps, a machining step and a heat treatment step on the shaft member (13a), the machining step for the shaft member (13a) comprising forming a joining outer surface (51) on an end portion of the shaft member (13a) to be joined onto the bottom portion (12a2) of the cup member (12a) to prepare the shaft member (13a) as a finished component; fitting the joining hole (50) of the cup member (12a) as the finished component and the joining outer surface (51) of the shaft member (13a) as the finished component to each other; and welding a fitting portion (60) between the joining hole (50) and the joining outer surface (51) through irradiation of a beam from an inner side of the cup member (12a), a diameter of the fitting portion (60) being set to an equal dimension for each joint size.

Naoki Nakagawa
Shintaro Suzuki
Shigeki Matsushita

JP2012276908A

March 29, 2017

December 19, 2012

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ntn corporation

F16D3/20; B23K15/00; B23K26/20; B23K31/00; C21D9/40; C21D9/50

JP2012229714A
JP2011226589A
JP2011190903A
JP2008232189A
JP2007263299A
JP8188857A
JP2010047043A
JP2005098449A
JP2008064195A
JP2007263298A

Kunihiko Shiromura
Tsuyoshi Kumano

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