Title:
VEHICLE-WHEEL BEARING DEVICE AND INTERMEDIATE BODY, AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2015/041355
Kind Code:
A1
Abstract:
Provided are a vehicle-wheel bearing device and intermediate body which are intended to reduce costs by decreasing the forging injection weight and the machining amount, and a method for producing the same. A vehicle-wheel bearing device having a bolt-insertion hole (10) into which a hub bolt (6a) is press-fitted and which is formed in the outer-circumferential direction or the like of a vehicle-wheel attachment flange (6), wherein: a recess (11) is formed in advance by forging in a site at which the bolt-insertion hole (10) is to be drilled; this recess (11) is formed in a bowl shape which is provided with a flat floor (11b) and extends from the lateral surface (6c) of the vehicle-wheel attachment flange (6) along an angled surface (11a); machining is performed so as to form the bolt-insertion hole (10) in the floor (11b) and a beveled section in the opening section on both sides thereof; and one or both of the beveled sections are configured from the angled surface (11a) of the recess (11) formed by forging.
Inventors:
MITSUISHI TADASHI (JP)
Application Number:
PCT/JP2014/074968
Publication Date:
March 26, 2015
Filing Date:
September 19, 2014
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
MITSUISHI TADASHI (JP)
MITSUISHI TADASHI (JP)
International Classes:
B60B27/00; B21K1/14; B60B35/14; F16C19/18; F16C33/58
Foreign References:
| JP2012184813A | 2012-09-27 | |||
| JP2013023086A | 2013-02-04 | |||
| JP2012062013A | 2012-03-29 | |||
| JP2006177466A | 2006-07-06 | |||
| JP2007016865A | 2007-01-25 |
Attorney, Agent or Firm:
KOSHIKAWA, TAKAO (JP)
Takao Koshikawa (JP)
Takao Koshikawa (JP)
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