Title:
METHOD FOR MANUFACTURING WHEEL BEARING APPARATUS, AND WHEEL BEARING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2014/002924
Kind Code:
A1
Abstract:
A method for manufacturing a wheel bearing apparatus (10) provided with a flanged axle member (12) including an axle portion (11) disposed on one end of an axial direction and fitted with a rolling bearing (13), a fitting axle portion (24) disposed on the other end of the axial direction and fitted in a central opening of a wheel, a forged concave portion (25) formed in a face at the other end of the axial direction on an axle center (O) of the fitting axle portion (24), and a plurality of flange portions (27) extending radially outwardly from an outer peripheral surface between the axle portion (11) and the fitting axle portion (24) and disposed at intervals in a circumferential direction includes: a step of forming the flange portions (27) by lateral extrusion while forming the forged concave portion (25) with a forging die apparatus (70) for cold forging; and a step of performing a partial surface removal process at a specific portion on the inner surface of the forged concave portion (25) where shrinkage may be caused by the step of forming the flange portions (27).
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Inventors:
MASUDA YOSHINORI (JP)
Application Number:
PCT/JP2013/067183
Publication Date:
January 03, 2014
Filing Date:
June 24, 2013
Export Citation:
Assignee:
JTEKT CORP (JP)
International Classes:
B21K1/05; B21J5/06; B60B35/02; F16C19/18; F16C33/64
Domestic Patent References:
| WO2008018439A1 | 2008-02-14 |
Foreign References:
| JP2010188830A | 2010-09-02 | |||
| JP2000213412A | 2000-08-02 | |||
| JP2008194742A | 2008-08-28 |
Attorney, Agent or Firm:
UENO, HIDEKI (JP)
Ueno Hideki (JP)
Ueno Hideki (JP)
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