Forging device and forging method for outer joint member of constant-velocity universal joint

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United States of America Patent

PATENT NO 11897025
APP PUB NO 20230013212A1
SERIAL NO

17944719

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Abstract

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A forging apparatus includes an ironing mechanism and a phase alignment mechanism. The ironing mechanism includes: a punch set, which is fitted into a cylindrical portion of a pre-processing material to be formed into the outer joint member, and is radially expandable and contractible, the cylindrical portion having grooves formed in an inner peripheral surface thereof; and a die having a hole into which the cylindrical portion is press-fitted. The phase alignment mechanism is configured to align phases of the grooves in the inner peripheral surface of the pre-processing material and phases of track groove portion forming surfaces of the punch set with each other before the pre-processing material is fitted to the punch set.

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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
Numamoto, Jun Shizuoka, JP 5 16

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