Gehring Technologies Gmbh

Gehring Technologies Gmbh + Co. Kg

Erwin Baumgartner

Gerhard Flores

Michael Rach

Andreas Wagner

Manuel Waiblinger

Frank Hummel

Norbert Baumgartner

Joerg Necker

A honing tool has a tool body and shells disposed on the tool body. Honing stone sets each provided with two or more honing stones are provided. The shells each support one of the honing stone sets. Guide bars of the honing tool are placed against the bore and a portion of the bore is conically honed with decreasing stroke of the honing tool, wherein a lower reversing point of the honing tool remains substantially unchanged. Honing is terminated as soon as an upper reversing point has reached a predetermined terminal value. Alternatively, a portion of the bore is conically honed with a constant stroke of the honing tool, wherein reversing points of the stroke of the honing tool remain substantially unchanged and a feeding force pressing the honing stones against the bore is controlled as a function of a position of the honing tool in the bore.

Method and device for producing non-cylindrical bores with at least one recess by honing

A honing tool for working several separate bores that are arranged coaxially in series and have different diameters. The honing tool includes several cutting bar groups arranged coaxially in series, wherein a diameter of a cutting bar group of the several cutting bar groups, which diameter is formed by radially extendable cutting bars, differs from a corresponding diameter of at least one other cutting bar group of the several cutting bar groups. A centering bar group is arranged in an axial direction to a free end of the honing tool adjacent at least one cutting bar group; or a guide bar group is arranged directly adjacent opposite the free end of the honing tool adjacent the at least one cutting bar group, or both the centering bar group and the guide bar group are arranged accordingly.

Honing tool and method for working several coaxial bores

The invention relates to a device () for the combined precision turning and honing of a cylindrical borehole (). The device () according to the invention can comprise either only honing stones () which can be fed or also cutters () that can be fed during machining.

Device and method for machining a cylinder bore by means of a geometrically defined cutter and a geometrically undefined cutter

The invention proposes a device which prepared a cylinder bore of a combustion engine in one working stroke such that the cylinder bore can subsequently be thermally coated.

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Ostfildern, Germany

Erwin Baumgartner