专利名称：METHOD AND APPARATUS FOR
MANUFACTURING BEARING UNIT FORSUPPORTING WHEEL AND METHOD FORMANUFACTURING VEHICLE
发明人：HAGIWARA Nobuyuki,ISHIMORI
Yasuhiro,KATOU Hiroshi
申请号：EP17827577.2申请日：20170710公开号：EP3486000A1公开日：20190522
专利附图：
摘要：Rotary forging for forming a hub-side face spline is started in a state in which acaulking section (18) is made to come in contact with a flat surface section (30) that is aninner end surface of an inner ring in an axial direction and a chamfer (31). In addition, acontact portion (P) between an inner end surface of the caulking section (18) in the axialdirection and a processing surface (35) of a roll (32) at the beginning of the rotary forgingoverlaps a contact portion between the caulking section (18) and the flat surface section(30) and the chamfer (31) of the inner ring (9) in the axial direction.
申请人：NSK Ltd.
地址：6-3 Ohsaki 1-chome Shinagawa-ku Tokyo 141-8560 JP
国籍：JP
代理机构：Grünecker Patent- und Rechtsanwälte PartG mbB
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