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1. 发明授权

US08511903B2 Wheel bearing device and manufacturing method therefor 有权
标题翻译：车轮轴承装置及其制造方法
公开(公告)号：US08511903B2
公开(公告)日：2013-08-20
申请号：US12704221
申请日：2010-02-11
申请人： Yoshinori Masuda , Tatsuya Yokota , Motonori Nakao
发明人： Yoshinori Masuda , Tatsuya Yokota , Motonori Nakao
IPC分类号： F16C13/00 , B21D22/00
CPC分类号： B21K1/40 , B21K1/12 , B60B27/00 , F16C33/64 , F16C2326/02
摘要： A wheel bearing device of the invention includes a flanged shaft member that includes a shaft portion to which a rolling bearing is assembled, a fitting shaft portion that is formed on one end side of the shaft portion and that is fitted to a center hole of a wheel, and a plurality of flange portions that extend radially outward on an outer peripheral surface located between the shaft portion and the fitting shaft portion and each of which has a through bolt hole in which a hub bolt for fastening the wheel is arranged. Each flange portion of the wheel bearing device is formed by side extrusion when a forged recess is formed at a center of an end surface of the fitting shaft portion by cold forging. An edge portion of a cross-sectional shape taken perpendicularly to a longitudinal direction of each flange portion is formed in an R-chamfered shape.
摘要翻译：本发明的车轮轴承装置包括：凸缘轴构件，其包括轴组件的滚动轴承的轴部，形成在所述轴部的一端侧并且嵌合于所述轴部的中心孔的嵌合轴部轮和多个凸缘部，其在位于所述轴部和所述嵌合轴部之间的外周面上径向向外延伸，并且每个所述凸缘部具有贯通螺栓孔，所述贯通螺栓孔配置有用于紧固所述车轮的轮毂螺栓。当通过冷锻在安装轴部的端面的中心形成锻造凹部时，车轮轴承装置的每个凸缘部分由侧挤出形成。沿着每个凸缘部分的纵向方向垂直截取的横截面形状的边缘部分形成为R倒角形状。

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