Method of manufacturing magnetostrictive torque sensor shaft

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12152949
APP PUB NO 20220026294A1
SERIAL NO

17416850

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Abstract

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A method of manufacturing a magnetostrictive torque sensor shaft (100) to which a sensor portion (2) of a magnetostrictive torque sensor (1) is mounted. The method includes heat treatment step of subjecting an iron-based shaft member to a carburizing, quenching, and tempering process, and a shot peening step of performing shot peening using a boron-free zirconia shot media having a Vickers hardness at least equal to 1100 and at most equal to 1300, at least in a position on the shaft member, after the heat treatment step, to which the sensor portion is to be attached. The surface of the shaft member, after shot peening, has a total error, including hysteresis error and angle error, of not more than 3%.

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Patent Owner(s)

Patent OwnerAddress
NSK LTDTOKYO 141-8560

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fukuda, Kota Kanagawa, JP 17 115
Nakamura, Teruyuki Tokyo, JP 32 184
Ono, Junji Kanagawa, JP 25 141
Sugiyama, Yuta Tokyo, JP 70 914

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