OUTER JOINT MEMBER FOR FIXED CONSTANT VELOCITY UNIVERSAL JOINT

WIPO Patent Application WO/2010/082427

A1

An outer joint member for a fixed constant velocity universal joint, capable of being produced with an improved yield ratio and reduced production cost by reducing the number of man-hour by a reduction in the amount of work after forging. An outer joint member for a fixed constant velocity universal joint, provided with a cup section (16) and a shaft section (18) which extends in the axial direction from the bottom of the cup section (16).  The outer joint member consists of carbon steel for mechanical structures, and the following portions of the outer joint member are finished by cold forging: track grooves (12), inner diameter spherical surface sections (14a), chamfers (12b) at the cup entrance, track chamfers (12c), chamfers (12a) at the track entrances, portions of the outer diameter surface of the cup section (16), said portions excluding a boot mounting section (19), and a center hole (13) in an end surface (18a) of the shaft section (18).

KOBAYASHI Masazumi (1578 Higashikaizuka, Iwata-sh, Shizuoka 37, 〒4380037, JP)
小林　正純 (〒37 静岡県磐田市東貝塚１５７８番地　ＮＴＮ株式会社内 Shizuoka, 〒4380037, JP)
YAMAZAKI Kisao (1578 Higashikaizuka, Iwata-sh, Shizuoka 37, 〒4380037, JP)

JP2009/071088

July 22, 2010

December 18, 2009

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NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 〒5500003, JP)
ＮＴＮ株式会社 (〒03 大阪府大阪市西区京町堀１丁目３番１７号 Osaka, 〒5500003, JP)
KOBAYASHI Masazumi (1578 Higashikaizuka, Iwata-sh, Shizuoka 37, 〒4380037, JP)
小林　正純 (〒37 静岡県磐田市東貝塚１５７８番地　ＮＴＮ株式会社内 Shizuoka, 〒4380037, JP)

F16D3/20; B21K1/14

TANAKA Hideyoshi et al. (Ehara Patent Office, 15-26 Edobori 1-chome, Nishi-k, Osaka-shi Osaka 02, 〒5500002, JP)

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