Nagel Maschinen- Und Werkzeugfabrik Gmbh

Grob-werke Gmbh & Co. Kg

Bernd Nagel

Uwe-Peter Weigmann

Erkan Hodza

Herbert Rauscher

German Wankmiller

Martin Mayer

Georg Wassermann

Johannes Lintner

Karl-Günther Roth

Günther Roth

In a method for the finishing of a crankshaft bearing bore in a cylinder crankcase of an internal combustion engine, starting from a prepared crankshaft bearing bore, a finished crankshaft bearing bore is produced with a prescribable desired size, a prescribable desired structure of the bore inner surface and a prescribable desired position of the bore axis. The prepared crankshaft bearing bore is first finished with at least one finishing tool with a geometrically defined cutting edge and then the honing of the crankshaft bearing bore is carried out. In a final finishing operation with a geometrically defined cutting edge immediately preceding the honing, an allowance of at least 0.4 mm is removed, and the honing tool is introduced into the bore coaxially in relation to the desired position of the bore axis and moved within the bore, an allowance of at least 0.08 mm being removed during the honing.

Method and machining installation for the finishing of a crankshaft bearing bore

According to a method for the fine machining of internal surfaces of bore holes in tools by fine boring and subsequent honing, the following steps are executed: Fine boring of at least one bore hole () in a tool () by means of a fine boring tool () of a fine boring device () for the creation of a fine bored hole; Transfer of the tool to a machining position of a honing device () for the machining of the fine bored bore hole by means of a honing tool (A) of the honing device; Measurement of the fine bored bore hole with one of the measurement devices () allocated to the honing device in the machining position for the creation of at least one bore hole measurement signal representing the properties of the fine bored bore hole. The fine boring device is controlled subject to the bore hole measuring signal.

Method for machining that combines fine boring and honing and machining equipment for the execution of the method

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Nuertingen, Germany

Bernd Nagel