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Title:
FACE SPLINE MOLDING DEVICE, FACE SPLINE MOLDING METHOD, OUTER JOINT MEMBER, AND CONSTANT VELOCITY UNIVERSAL JOINT
Document Type and Number:
WIPO Patent Application WO/2012/172942
Kind Code:
A1
Abstract:
Provided are a face spline molding device and molding method with which deformation of the internal diameter of the cup can be limited and which can mold face splines stably. An outer joint member molded with said face spline molding device or face spline molding method, and a constant velocity universal joint using an outer joint member thus molded are proposed. The face spline molding device is equipped with: a cradle (53) having a punch member (50) with teeth (62) for molding the face splines (28) and an end face-receiving surface (52) for receiving the open end face (51) of a cup part (7); and a shaft member (57) having an inner surface-receiving surface (56) for receiving the inner surface (55) of the bottom wall of the cup part (7). The open end face (51) and the inner surface (52) of the bottom wall are simultaneously compressed. In this state, oscillating movements of the punch member are made to mold face splines (28) on the back surface (26a) of the bottom wall by plastic deformation due to the teeth (62) of the punch member (50).

Inventors:
KIMURA Takahiro (2454 Aza Tsuchijima, Oaza Higashikata, Kuwana-sh, Mie 11, 〒5110811, JP)
木村 隆宏 (〒11 三重県桑名市大字東方字土島2454番地 NTN株式会社内 Mie, 〒5110811, JP)
Application Number:
JP2012/063184
Publication Date:
December 20, 2012
Filing Date:
May 23, 2012
Export Citation:
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Assignee:
NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 〒5500003, JP)
NTN株式会社 (〒03 大阪府大阪市西区京町堀1丁目3番17号 Osaka, 〒5500003, JP)
KIMURA Takahiro (2454 Aza Tsuchijima, Oaza Higashikata, Kuwana-sh, Mie 11, 〒5110811, JP)
International Classes:
B21K1/30; B21H5/00; B21J9/02; B21K1/14; B60B35/14; F16D3/20
Foreign References:
JP2009274515A2009-11-26
JP2002339959A2002-11-27
JP2001162338A2001-06-19
JP2006153171A2006-06-15
JPS63154240A1988-06-27
JPS63184501A1988-07-30
JP2009274515A2009-11-26
Other References:
See also references of EP 2722115A4
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (Ehara Patent Office, 15-26 Edobori 1-chome, Nishi-ku, Osaka-sh, Osaka 02, 〒5500002, JP)
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Claims: