Method for butt welding, butt welded joint, and outside joint member for constant velocity universal joint

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United States of America Patent

PATENT NO 10478914
APP PUB NO 20170120369A1
SERIAL NO

15319097

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Abstract

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For butt-welding, which includes bringing joining end surfaces of a cup member and a shaft member into abutment against each other and radiating a high energy intensity beam from a radially outer side, the shaft member has a recess on a radially inner side of the joining end surface to obtain a welded portion having a closed hollow cavity on a radially inner side after butt-welding. The joining end surface (protruding surface) of the cup member protrudes toward a radially inner side with respect to an inner diameter of the joining end surface of the shaft member. With this, a welded portion of an outer joint member of a constant velocity universal joint, which is manufactured by joining the cup member and the shaft member, can be improved in strength and quality.

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Patent Owner(s)

Patent OwnerAddress
NTN CORPORATIONOSAKA-SHI OSAKA 550-0003

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujita, Takuya Shizuoka, JP 62 306
Kobayashi, Masazumi Shizuoka, JP 44 173
Nakagawa, Naoki Shizuoka, JP 90 1257
Nakano, Kenichi Shizuoka, JP 66 673
Natsume, Renji Shizuoka, JP 3 5
Sugiyama, Tatsuro Shizuoka, JP 62 444
Suzuki, Kiyohiro Shizuoka, JP 7 70
Suzuki, Shintaro Shizuoka, JP 138 1713

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