Method for forging shaft member of constant velocity universal joint

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10933462
APP PUB NO 20180200782A1
SERIAL NO

15743827

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A forging method for a shaft member includes preforming at least one of a plurality of enlarged diameter portions to obtain a semi-finished member, and forming a remainder of the enlarged diameter portions in the semi-finished member using a mold. The mold includes a punch, split dies, and a workpiece receiving member. The forming of the remainder of the enlarged diameter portions includes allowing the semi-finished member having the at least one of the enlarged diameter portions to be placed on the workpiece receiving member, cramping the semi-finished member in its radial direction by closing the split dies, and filling the semi-finished member into forming surfaces of the split dies by the pressure applied by the punch under the state in which the semi-finished member is cramped.

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Patent Owner(s)

Patent OwnerAddress
NTN CORPORATIONOSAKA-SHI OSAKA 550-0003

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Enomoto, Yoshio Kanagawa, JP 2 9
Kobayashi, Masazumi Shizuoka, JP 44 173
Mano, Yoshiya Shizuoka, JP 6 8
Nagatake, Akira Shizuoka, JP 2 4
Natsume, Renji Shizuoka, JP 3 5
Sugiyama, Tatsuro Shizuoka, JP 62 444
Suzuki, Shintaro Shizuoka, JP 138 1713
Tsuboi, Shunichirou Shizuoka, JP 2 4

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