Method for the production of a ball jointed connection

US6343888B1 · kind B1 · utility

Assignee

• Brueninghaus Hydromatik GmbH · DE

Inventors

• Bernd Hühn · Langenau, DE
• Manfred Lotter · Neu-Ulm, DE
• Thomas Kunze · Nagold, DE
• Rainer Stolzer · Neu-Ulm, DE

Key dates

• Filing date: Sep 1, 1999
• Grant date: Feb 5, 2002
• Expiry date: Sep 1, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T403/4949
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a method for the production of a ball jointed connection between a guide shoe (10) and a cylinder piston (1) of a piston machine. A spherical cap-shaped recess (2) is first of all formed on the cylinder piston (1) and/or the guide shoe (10), whereby the recess (2) is undercut in such a way that the spherical cap-shaped recess (2) comprises a solid angle area (&agr;) of over 180°, and the diameter (D) in the region of the equator plane (5) is greater than the diameter (d) of the recess (2). Furthermore, a spherical head (11) is formed on the corresponding counterpart, that is the guide shoe (10) and/or the cylinder piston (1). In accordance with a first version of the invention, the spherical head (11) is pushed into the spherical cap-shaped recess (2) in such a way that the edge area (6) surrounding the spherical cap-shaped recess (2) is elastically deformed when the spherical head (11) is pushed in, and the surrounding edge area (6) grips behind the spherical head (11). Alternatively, the spherical head (11) has a flattening (20) which is plastically deformed after introduction of the spherical head (11) into the recess (2).