Title:
METHOD FOR MANUFACTURING MAGNETOSTRICTIVE TORQUE SENSOR SHAFT
Document Type and Number:
WIPO Patent Application WO/2020/129769
Kind Code:
A1
Abstract:
This method for manufacturing a magnetostrictive torque sensor shaft 100 to which a sensor portion 2 of a magnetostrictive torque sensor 1 is to be attached includes: a heat treatment step of subjecting an iron-based shaft member to a carburizing, quenching, and tempering process; a shot peening step of performing shot peening using a steel shot material 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 2 is to be attached; and a surface polishing step of subjecting the shaft member after the shot peening to surface polishing.
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| WO/2011/048846 | TORQUE SENSOR |
| WO/2019/081834 | TORQUE SENSOR FOR A ROTATING ELEMENT USING A MECHANICAL FRICTION COUPLING |
Inventors:
FUKUDA KOTA (JP)
ONO JUNJI (JP)
NAKAMURA TERUYUKI (JP)
SUGIYAMA YUTA (JP)
ONO JUNJI (JP)
NAKAMURA TERUYUKI (JP)
SUGIYAMA YUTA (JP)
Application Number:
PCT/JP2019/048461
Publication Date:
June 25, 2020
Filing Date:
December 11, 2019
Export Citation:
Assignee:
NSK LTD (JP)
International Classes:
G01L3/10
Foreign References:
| JPH0566165A | 1993-03-19 | |||
| JP2002036115A | 2002-02-05 | |||
| JP2014213441A | 2014-11-17 | |||
| JP2018112451A | 2018-07-19 | |||
| JPH11200009A | 1999-07-27 | |||
| EP1516940A1 | 2005-03-23 | |||
| JP2018112451A | 2018-07-19 |
Other References:
OGAWA KAZUYOSHI; ASANO TAKASHI: "Improvement in fatigue strength of carburized steel gears with shot peening and chemical polishing", R&D REVIEW OF TOYOTA CRDL, vol. 30, no. 1, 31 March 1995 (1995-03-31), pages 37 - 44, XP009190799
Attorney, Agent or Firm:
HIRATA & PARTNERS (JP)
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