Title:
An inner direction member and a manufacturing method for the same of a uniform adjustable joint
Document Type and Number:
Japanese Patent JP5917249
Kind Code:
B2
Abstract:
This inner member (3, 33) of a constant velocity universal joint (1, 31) at the outer periphery of which a raceway surface (15, 37) is formed that supports torque transmission elements (4, 5, 22, 34) and at the inner periphery of which a spline section (13, 46) is formed is characterized by the inner member (3, 33) comprising a steel material and being subjected to carburizing, quenching, and tempering of which the carburizing is locally suppressed, the spline section (13, 46) being a slack quenched section, at least the surface of the spline major diameter having a metal structure not having a carburized abnormal layer, and a quenched section having a higher carbon concentration than the spline section being formed at the surface other than the spline section (13, 46).
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Inventors:
Kazuhiko Yoshida
Masato Nagaku
Yoshihiro Tsurumi
Masato Nagaku
Yoshihiro Tsurumi
Application Number:
JP2012090183A
Publication Date:
May 11, 2016
Filing Date:
April 11, 2012
Export Citation:
Assignee:
ntn corporation
International Classes:
F16D3/20; F16D3/205
Domestic Patent References:
| JP2009541682A | ||||
| JP2007155100A | ||||
| JP2008284999A | ||||
| JP2011094700A |
Attorney, Agent or Firm:
Kunihiko Shiromura
Tsuyoshi Kumano
Tsuyoshi Kumano
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