Maschinenfabrik Gehring Gesellschaft MIT Beschrankter Haftung & Co.

Maschinenfabrik Gehring Gmbh & Co.

Walter Lang

Ulrich Klink

Hans Grimm

Karl-Heinz Bergen

Ernst Lang

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.

Method of finishing a surface of a workpiece

A honing device has a honing tool for the precision machining of blind-hole bores in a workpiece. The honing tool has a shank, at the free end of which honing strips are arranged. They can be moved radially outwards by means of a spreader rod. In a coolant duct system in the tool, during the machining of the workpiece coolant is supplied to the end of the honing tool facing the workpiece. To return the coolant, there are return ducts which extend along the outer periphery of the honing tool. The honing device also has a coolant feed device which can be aligned with and fixed to the honing tool. The feed and return of the coolant guarantee a precisely defined coolant circulation within the network zone.

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Fellbach, Germany

Walter Lang