Constant velocity universal joint

US5538473A · kind A · utility

Assignee

• GKN Automotive Limited · DE

Inventors

• Winfried Busch · Hennef (Sieg), DE
• Eugen Stall · Neunkirchen, DE

Key dates

• Filing date: Nov 15, 1993
• Grant date: Jul 23, 1996
• Expiry date: Nov 15, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S464/905
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The area pressure in a constant velocity universal joint of the tripode type is reduced to improve the lubrication conditions. The ends of the arms of the inner joint part facing the two directions of rotation of the joint arms are each provided with a face extending parallel to the longitudinal axis of the joint and to the axis of the respective arm. The inner is produced by a forming tool divided into two parts. The workpiece is journal-shaped and when shown in an axial section, comprises a convexly curved outer circumference. The pressing and/or forging burr is formed in such a way that the use of the workpiece is not adversely affected and therefore subsequent machining of the burr is not required. In the region of the burr, there is the face as a result of which the burr, relative to the outer contour, is displaced radially inwardly. A further embodiment of the invention has a spherically shaped outer face of the outer roller which is provided with a concentrically arranged, rotating, cylindrically shaped face, with the center plane of the outer roller extending perpendicularly relative to the axis of the arms and at the same time constituting the center plane of the face.