Method of manufacturing steering shaft

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12109608
APP PUB NO 20220280995A1
SERIAL NO

17637759

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Abstract

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A method of manufacturing a rack bar includes: a rolling die abutment step of bringing a pair of rolling dies into abutment against an intermediate portion of a workpiece; and a ball screw groove forming step of forming a ball screw groove in the workpiece by moving the workpiece relative to the pair of rolling dies so that a region of the workpiece against which the pair of rolling dies is brought into abutment is moved from the intermediate portion toward a first end portion of the workpiece.

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Patent Owner(s)

Patent OwnerAddress
HITACHI ASTEMO LTDHITACHINAKA-SHI IBARAKI 312-8503

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kimura, Norihiro Hitachinaka, JP 5 2
Okabe, Takeo Hitachinaka, JP 37 308
Seki, Takateru Hitachinaka, JP 11 54

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