Method of finishing a surface of a workpiece

US5441439A · kind A · utility

Assignee

• Maschinenfabrik Gehring GmbH & Co. · DE

Inventors

• Hans Grimm · Ochsenhausen, DE
• Walter Lang · Rochester, US
• Karl-Heinz Bergen · Echterdingen, DE
• Ernst Lang · Gerlingen, DE
• Ulrich Klink · Neuffen, DE

Key dates

• Filing date: Apr 9, 1993
• Grant date: Aug 15, 1995
• Expiry date: Apr 9, 2013

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02F1/20
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

A method for finishing surfaces of workpieces includes a honing process with at least two method steps. In one of the method steps the surface, for example, the inner wall of a bore, is honed to a predetermined final dimension whereby a very fine structure with minimal depth of honing traces is generated so that a great portion of the surface functions as the supporting surface. In a further method step, which can be performed before or after the finishing-honing step, crossed grooves are provided in the surface by subjecting the surface to a stream of a medium, especially a laser, whereby the pattern of the grooves provides a lubricant reservoir for the future use of the workpiece. The treatment with a stream of a medium does not cause deformations at the edges of the grooves. This ensures an optimal distribution of the lubricant.