Title:
SHAFT MEMBER FOR FLUID BEARING DEVICE, AND ITS MANUFACTURING METHOD
Document Type and Number:
Japanese Patent JP2008175384
Kind Code:
A
Abstract:
To inexpensively form a shaft member for a fluid bearing device excelling in bearing surface accuracy and shape accuracy between bearing surfaces and having high fixing strength between a shaft part and a flange part.
The shaft part 21 is pressed into the flange part 22, and a plastic working part 31c of a first tool 31 is pressed to an upper end face 22a of the flange part 22 to plastically deform a part of the flange part 22 to the inner peripheral side. A caulking part 23 is thereby formed between the shaft part 21 and the flange part 22. Press-fitting and caulking are performed in a state of restraining both end faces 22a, 22b of the flange part 22 with a second tool 32 and a third tool 33.
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Inventors:
BITO YOSHIHIKO
YAMAMOTO TETSUYA
KOMORI ISAO
HIRAIDE ATSUSHI
YAMAMOTO TETSUYA
KOMORI ISAO
HIRAIDE ATSUSHI
Application Number:
JP2007124707A
Publication Date:
July 31, 2008
Filing Date:
May 09, 2007
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16C35/02; F16C17/10; F16C33/14
Attorney, Agent or Firm:
Shogo Ehara
Hideka Tanaka
Yoshiyuki Shiraishi
Kunihiko Shiromura
Tsuyoshi Kumano
Hideka Tanaka
Yoshiyuki Shiraishi
Kunihiko Shiromura
Tsuyoshi Kumano