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Carbonitriding of universal joint bushes

A cross shaft and universal joint technology, applied in the direction of couplings, bearing components, shafts and bearings, etc., can solve the problems of increased wear of the universal joint cross shaft bushing, bearing damage, etc., and achieve long service life and long life. The effect of long life and good tempering stability

Inactive Publication Date: 2019-01-04
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these universal joint spider bushings are subject to increased wear at small rotation angles and at the same time high rotational frequencies, especially on the sides of the rolling element raceways, the needle rollers of the needle roller assembly on the universal joint spider The inner part of the bushing rolls on this rolling element raceway
Bearing damage occurred as a result, which necessitated replacement of the universal joint spider bushing

Method used

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  • Carbonitriding of universal joint bushes
  • Carbonitriding of universal joint bushes
  • Carbonitriding of universal joint bushes

Examples

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Embodiment Construction

[0058] figure 1 A first embodiment of a universal joint spider bushing for a spider joint used in drive and steering axles of a vehicle is shown, wherein the universal joint spider bushing 1 comprises an outer ring 2 .

[0059] In the present example, the universal joint spider bushing 1 essentially has two vertical parts and one horizontal part, which are connected to one another, in particular constructed in one piece. The described parts together form a cup-shaped joint spider bushing 1 , wherein the shown horizontal parts form the outer ring 2 .

[0060] In the region between these three parts, the rolling bodies of the needle bearing or the rollers 3 of the needle bearing are arranged. At least on the inner side of the cup-shaped joint spider bushing 1 , the horizontal part or outer ring 2 thus forms a rolling-body raceway on which the rollers 3 can roll.

[0061] For the sake of completeness, it should be mentioned that the three described parts of the universal joint ...

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Abstract

The invention relates to a universal joint bush (1) for universal joints for use in drive shafts and steering shafts, comprising an outer ring (2), which has a surface layer (R) formed by at least onemeasure for diffusing an element into regions of the universal joint bush (1) near the surface, wherein the surface layer (R) of the outer ring (2) comprises nitrogen. The invention further relates to methods for producing a universal joint bush (1) and / or for increasing the wear resistance of a universal joint bush (1) having a surface layer (R) containing nitrogen.

Description

technical field [0001] The invention relates to a universal joint spider bushing for cross shaft joints used in drive shafts and steering shafts and to a method for producing the universal joint spider bushing. Background technique [0002] Universal joint spider bushings are commonly used in universal joint shaft universal joints, where the universal joint is arranged between two shafts oriented at a curved angle. [0003] Typically in this construction each shaft is provided with a universal joint yoke at the end. Furthermore, the commercially available universal joint cross comprises four pins offset by 90° relative to one another, which connect the joint yokes to one another, wherein two pins are assigned to one universal joint yoke. In this case, the pins are used in pairs in the universal joint yoke via joint spider bushings in combination with needle roller assemblies as radial bearings, respectively. [0004] Cardan joint spider bushings known and used from the pri...

Claims

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Application Information

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IPC IPC(8): F16D3/38
CPCF16D2250/0038F16D3/385F16C33/7809F16C2361/41F16D3/41
Inventor 马丁·克虏伯斯文·拉奇尼特
Owner SCHAEFFLER TECH AG & CO KG
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