Wheel bearing assembly comprising a joint and corresponding method of manufacture

Inactive Publication Date: 2013-06-13
AB SKF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent is about a new design for a wheel hub assembly for vehicles. The design includes an insert ring that is placed into a groove on the hub. The insert ring and groove are designed so that the insert ring fills the entire groove, ensuring complete contact between the two parts. This design also ensures that any face splines, which are used to connect the hub to the vehicle, are strong and stiff. The method for manufacturing the wheel hub assembly may include steps of hardening the nose part of the hub to increase its stiffness and strength. Overall, this design improves the performance of the wheel hub assembly and ensures the assembly's durability under various driving conditions.

Problems solved by technology

A disadvantage of welding, however, is that the resulting heat affected zone adversely affects the hardness of bearing steel.
If the raceway on the separate inner ring loses hardness, the life of the wheel bearing will be severely diminished.

Method used

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  • Wheel bearing assembly comprising a joint and corresponding method of manufacture
  • Wheel bearing assembly comprising a joint and corresponding method of manufacture
  • Wheel bearing assembly comprising a joint and corresponding method of manufacture

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Embodiment Construction

[0041]In the interests of fuel economy, there is an increasing drive towards reducing the weight of automotive components. This also applies to the components of a vehicle wheel end. Further, the vehicle wheel end is part of the unsprung mass, and reducing the unsprung mass is beneficial in terms of reducing wheel vibration. In driven applications, the weight of the wheel end is predominantly governed by the wheel bearing unit and the constant velocity joint (CVJ) which drives a flanged hub of the bearing unit. Generally, a bore of the flanged hub is provided with axially oriented splines, which engage with corresponding splines on a driveshaft of the CVJ. It has been found that a lighter weight construction is achieved by providing an inboard side face of the flanged hub with radially oriented face splines, for engagement with corresponding face splines on the CVJ. Face splines have the further advantage of being play-free and the corresponding machining process is more economical....

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Abstract

The present invention resides in a wheel bearing assembly (100) comprising a flanged hub (110) and at least one second component (130) that is joined to the flanged hub by means of a radially intermediate joint (160). Specifically, the flanged hub has a first joining surface and the second component has a second joining surface, radially opposite from the first joining surface and spaced therefrom, such that a groove is defined between the first and second joining surfaces. According to the invention, the radially intermediate joint (160) is formed by an insert ring made from a high strength material that is pressed into the groove. The invention also relates to a corresponding method of manufacturing a wheel bearing unit.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a wheel bearing assembly having a flanged hub that is connected to at least one other component of the assembly by means of a joint. The invention further relates to a method of manufacturing a wheel bearing assembly.BACKGROUND[0002]One example of a wheel bearing assembly comprising a joint is known from DE 102006033116. The joint in this example is a weld, which is employed to join a separate inner ring to the flanged hub such that the inner ring presses against an inboard row of rolling elements, to provide bearing preload. In many wheel bearing assemblies, such as disclosed in WO 2007014553, bearing preload is set by orbitally deforming an elongation of the flanged hub to form a collar. This collar then presses the separate inner ring against the inboard row of rolling elements. The welded joint disclosed in DE 102006033116 therefore enables a more compact bearing assembly in comparison with the assembly disclosed in WO...

Claims

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Application Information

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IPC IPC(8): B60B27/00B21K1/00B21D39/06
CPCB21D39/06Y10T29/49863B23P11/00F16D1/06F16D1/072F16C19/186F16C2326/02F16C43/04F16C33/60F16B17/002B21K1/00B60B27/0078F16C35/067Y10T29/49643Y10T403/7051B21K25/00F16B17/00
Inventor VAN DE SANDEN, JOHNVISSERS, CORNELIUS PETRUS ANTONIUSHAANS, VICTORKNOPF, ANDREASRE, PAOLO A.
Owner AB SKF
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