Title:
SHAFT FOR STEERING DEVICE, METHOD FOR PRODUCING SHAFT FOR STEERING DEVICE, AND ELECTRIC POWER STEERING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/179929
Kind Code:
A1
Abstract:
Disclosed is a method for producing a shaft for a steering device, the shaft for a steering device including: a spline shaft part to be connected with an input shaft; a stopper part to be connected with an output shaft; and an intermediate shaft part that connects the spline shaft part and the stopper part. The production method comprises: a step for forming, by forging, a hole that is dented in the axial direction from one end of a columnar material; and a step for pressing, by forging, the material in which the hole has been formed into a mold with a press, to thereby subject a section of the material where the spline shaft part and the intermediate shaft part are to be formed to a drawing process in the radial direction, and simultaneously, elongate the length, along the axial direction, of the hole.
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Inventors:
SUEHIRO TATSUYA (JP)
YASUDA KANAME (JP)
YAMADA KAZUYA (JP)
YASUDA KANAME (JP)
YAMADA KAZUYA (JP)
Application Number:
PCT/JP2018/004895
Publication Date:
October 04, 2018
Filing Date:
February 13, 2018
Export Citation:
Assignee:
NSK LTD (JP)
International Classes:
B21K1/12; B21J5/06; B21J5/10; B62D1/20; B62D5/04; F16D1/02
Foreign References:
| JP4972136B2 | 2012-07-11 | |||
| JP2010019370A | 2010-01-28 | |||
| JPS5790415A | 1982-06-05 | |||
| JP2017039146A | 2017-02-23 | |||
| JPS5080260A | 1975-06-30 | |||
| JP3409614B2 | 2003-05-26 | |||
| JPH102342A | 1998-01-06 | |||
| JP2010065715A | 2010-03-25 | |||
| JP2005329477A | 2005-12-02 |
Other References:
See also references of EP 3603845A4
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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