公开(公告)号：EP1908852A4

公开(公告)日：2012-03-21

申请号：EP06768021

申请日：2006-07-10

申请人： NTN TOYO BEARING CO LTD

发明人： HIRAI ISAO ,  YOSHINO KOHEI ,  TAKUBO TAKAYASU ,  FUJIMURA AKIRA ,  OBATA TAKUYA

IPC分类号： C21D9/40 ,  B60B27/00 ,  B60B35/02 ,  C21D1/06 ,  C21D8/00 ,  F16C19/18 ,  F16C33/62 ,  F16C33/64

CPC分类号： F16C33/62 ,  B60B27/0005 ,  B60B27/001 ,  B60B27/0042 ,  B60B27/0084 ,  B60B27/0094 ,  C21D1/02 ,  C21D1/06 ,  C21D1/19 ,  C21D1/62 ,  C21D9/40 ,  C21D2211/002 ,  C21D2211/005 ,  C21D2211/008 ,  C21D2221/00 ,  F16C33/64 ,  F16C35/063 ,  Y10T29/49679

公开(公告)号：EP2119926A4

公开(公告)日：2011-06-22

申请号：EP08702765

申请日：2008-01-15

申请人： NTN TOYO BEARING CO LTD

发明人： FUJIMURA AKIRA ,  KOMORI KAZUO ,  KUBOTA KAZUNORI ,  HASHIMOTO TETSUYA ,  SAITOU KEIJI

IPC分类号： F16C35/063 ,  B60B35/18 ,  F16C19/18

CPC分类号： F16C19/186 ,  B60B27/00 ,  B60B27/0084 ,  F16C33/586 ,  F16C43/04 ,  F16C2326/02 ,  Y10T29/49686

摘要： A support bearing assembly includes a plural rows of rolling elements (5) between opposed raceway surfaces (3, 4) of outer and inner members (1, 2), respectively. The inner member (2) is formed from a hub unit (9) and an inner ring (10) mounted on an outer periphery of an inboard end portion thereof. An annular stepped area (16) is provided in an inner periphery of the inboard side of the inner ring. A crimped portion (9b) engageable with the stepped area (16) is provided on an inboard end of the hub unit (9) and has a cylindrical shape prior to a crimping process. By setting the amount of change in an inner diameter of the inboard end of the crimped portion (9b) within a preset range when a crimping punch is driven in, the amount (D) of radially outward augmentation of the crimped portion is regulated.

公开(公告)号：EP1942284A4

公开(公告)日：2011-11-16

申请号：EP06797403

申请日：2006-09-04

申请人： NTN TOYO BEARING CO LTD

发明人： FUJIMURA AKIRA ,  OHTSUKI HISASHI

IPC分类号： F16C33/64 ,  B60B27/00 ,  B60B35/18 ,  F16C19/38 ,  F16C33/62

CPC分类号： F16C19/386 ,  B60B27/001 ,  F16C33/585 ,  F16C33/62 ,  F16C33/64 ,  F16C2240/18 ,  F16C2326/02

摘要： To provide a third generation type wheel support bearing assembly in which a stress concentration in a recess in a hub axle can be reduced, and the repeated fatigue strength can be increased. A hardened layer is provided by means of a heat treatment at least in a portion from a raceway in a surface portion of a hub axle made of a carbon steel to a flange root portion. A recess as a circumferential groove is formed along a corner portion defined between a raceway in the hardened layer and a large collar with which an end face of a roller contacts. The recess is formed by means of a lathe turning work, after formation of the hardened layer and then undergoes machining or grinding within an inner surface thereof, thereby causing a compressive residue stress to the hardened layer.

摘要翻译： 本发明提供一种能够减小轮毂轴的凹部内的应力集中，并且能够提高反复疲劳强度的第三代型的车轮用轴承。 至少在从碳钢制轮毂轴的表面部分的滚道到凸缘根部的部分中，通过热处理提供硬化层。 作为圆周凹槽的凹部沿着限定在硬化层中的滚道与滚子的端面接触的大轴环之间的角部形成。 在形成硬化层之后，通过车削车削加工形成凹槽，然后在其内表面上进行机械加工或研磨，从而对硬化层造成压缩残余应力。