Method for forming a bearing apparatus

• US 6,880,247 B2
• Filed: 10/23/2003
• Issued: 04/19/2005
• Est. Priority Date: 07/17/2000
• Status: Expired due to Term

• Current Assignee: Koyo Seiko Co., Ltd. (Toyota Motor Corporation)
• Original Assignee: Koyo Seiko Co., Ltd. (Toyota Motor Corporation)
• Inventors: Kawatani, Teruyuki, Takahashi, Kenji, Toda, Kazutoshi, Kashiwagi, Shinichirou, Wakisaka, Teruyuki
• Primary Examiner(s): COMPTON, ERIC B
• Application Number:
  US10/691,786
• Publication Number:
  US 20040083612A1
• Time in Patent Office: 544 Days
• Field of Search: 298/980.62, 298/980.7, 298/943.6, 298/943.61, 298/943.62, 301/105.1, 384/537, 384/543, 384/544, 384/585, 384/589
• US Class Current: 29/898.062
• CPC Class Codes: B60B 27/00 Hubs non-metallic B60B5/00; of high resiliency B60B9/00
• CPC Class Codes: B60B 27/0005 with ball bearings
• CPC Class Codes: B60B 27/0026 of the radial type, e.g. splined key
• CPC Class Codes: B60B 27/0084 caulking to fix inner race
• CPC Class Codes: B60B 27/0094 one or more of the bearing races are formed by the hub
• CPC Class Codes: F16C 19/186 with three raceways provided integrally on parts other than race rings, e.g. third generation hubs
• CPC Class Codes: F16C 2326/02 Wheel hubs or castors in general B60B
• CPC Class Codes: F16C 35/0635 the bore of the inner ring being of special non-cylindrical shape which co-operates with a complementary shape on the shaft, e.g. teeth, polygonal sections
• CPC Class Codes: F16C 43/04 Assembling rolling-contact bearings
• CPC Class Codes: F16D 1/108 having retaining means rotating with the coupling and acting by interengaging parts, i.e. positive coupling
• CPC Class Codes: F16D 2001/103 the torque is transmitted via splined connections
• CPC Class Codes: Y10T 29/49535 with assembling
• CPC Class Codes: Y10T 29/49536 Hub shaping
• CPC Class Codes: Y10T 29/49679 Anti-friction bearing or component thereof
• CPC Class Codes: Y10T 29/49682 Assembling of race and rolling anti-friction members
• CPC Class Codes: Y10T 29/49696 Mounting

Abstract

A bearing is mounted on a hollow shaft of a hub wheel. A shaft end of the hollow shaft is deformed radially outward and caulked to an outer end face of an inner ring of the bearing. Between a first area in which a spline portion is formed and a second area in which a caulked portion is formed, between a bending starting point for bending the shaft end radially outward and an end face of the shaft end on an inner peripheral face of the hollow shaft, a third area for suppressing deformation of the inner peripheral face of the hollow shaft caused by the caulking is formed. The third area cushions deformation in the first area.

Claims

1. A method for forming a bearing apparatus comprising:

providing a roller bearing having an inner ring with an inner circumferential surface, an inner ring radial end surface, and a chamfered corner having a chamfer radius X2 and extending from an inner circumferential surface end point to said inner ring radial end surface;

providing a hollow shaft body having;

a shaft end;

an internal splined portion having a spline pitch diameter y1 and extending to toward said shaft end to a spline portion end point; and

a spline free portion having a thickness y2 extending from said spline portion end point to said shaft end;

calculating a distance X1>

X2(y1/y2);

positioning said inner ring on said hollow shaft such that said inner circumferential surface end point is distanced from said spline portion end point toward said shaft end by the distance X1; and

swaging said hollow shaft outward from a bending starting point aligned with said inner circumferential surface end point to said shaft end to fix said inner ring.

2. The method according to claim 1, wherein said roller bearing is a double row angular contact ball bearing with vertices of contact angles outside of the roller bearing.