Maschinenfabrik Gehring Gmbh & Co.

Gehring Gmbh & Co. Kg

Other

Gehring Technologies Gmbh

Maschinenfabrik Gehring Gesellschaft MIT Beschrankter Haftung & Co.

Maschinenfabrik Gehring Gmbh & Co Kg

Ulrich Klink

Gerhard Flores

Andreas Wagner

Tobias Abeln

Hans Grimm

Hermann Schmidt

Dieter Aulich

Joachim Wiederhold

Klaus Litty

Walter Lang

Gerhard Sandhof

Karl-Heinz Bergen

Jürgen Wolf

Ernst Lang

J&ouml;rg Wolfgramm

Oliver Kull

Richard Stampfer

Andreas Dolla

A workpiece has a tribologically useable surface formed as a sliding surface, lubricated by an intermediate material, for a counterpart movable relative to the workpiece in a direction of movement. The sliding surface is provided with a structure formed of a plurality of pockets. The pockets form a closed micropressure chamber delimited by the uninterrupted peripheral rim, respectively. The uninterrupted peripheral rim is a deburred structure edge. In a plan view, the pockets are elongate and have a longitudinal extension. The sliding surface has a functional roughness in the supporting areas between the pockets.

Workpiece having a tribologically useable surface and method for producing such a surface

The invention relates to a machine for creating non-cylindrical bore surfaces having a machine spindle (), to which a machining tool (--) can be connected, onto which a feed movement is transferred via a feed means (-). A direct axially parallel acting linear drive (-) is provided in the tool fitting unit () associated with the machine spindle () for fine feeding, the feed movement of which overlaps the first mentioned feed movement, and the actuating means (-) of which acts upon a feed (-) that is disposed together with the machining tool (--) and the means for deflection (--) of the feed movement in a tool unit () that can be exchanged on the tool fitting unit ().

Machine for creating non-cylindrical bore surfaces

Method for frictionally connecting the front surfaces of two machine components () for transmitting high torques or transverse forces, wherein elevations () are provided on one () of the surfaces () to be connected, which are harder than the material of the other surface.

Method for frictionally connecting the front surfaces of two machine components for transmitting high torques or transverse forces

In a method for machining bores of workpieces with a desired nominal shape of the bores in operative condition, a bore with a desired nominal shape in inoperative condition is produced in a workpiece and the workpiece is then put in operative condition. A deviation of the desired nominal shape of the bore resulting from the operative conditions is determined. Based on the deviation, an initial shape which shape the bore must have in inoperative condition in order for the bore to assume the desired nominal shape in operative condition is the determined. Bores are then produced by employing the determined initial shape as a template.

Method for producing a bore

In a method for honing a bore having first and second sections sequentially arranged in an axial direction of the bore, wherein the first section is hardened so that the first and second sections have different hardness, a honing tool is radially supported by positioning guides of the honing tool on the second bore section. first section is machined with honing stones arranged on the honing tool to remove material from the first section. During machining of the first section, the honing tool is expanded by feeding the honing stones according to a defined feeding mode against a surface of the first section by a force-guided electro-mechanical advancement. During machining of the first section, the working stroke of the honing tool is adjusted continuously at least toward the end of the honing process. Feeding of the guides is realized independently of feeding of the honing stones.

Method of honing bores

A device for grinding an end face at an edge of a workpiece bore of a workpiece has a driven grinding tool and a guide pin, connected to the grinding tool, for insertion into the workpiece. The guide pin is dimensioned so as to precisely match the workpiece bore. The guide pin has a central axis. The grinding tool has a grinding surface extending angularly to the central axis. The grinding tool is periodically displaceable transverse to the central axis.

Device for grinding an end face, especially an annular surface at the edge of a workpiece bore

The method of fine-machining a workpiece surface to be supplied with a lubricant during operation of the workpiece includes the steps of subjecting the workpiece surface to a stream of a medium to produce linearly extending channels of a predetermined first depth in the workpiece surface, the linearly extending channels defining areas therebetween, and forming in the areas by subjecting the workpiece surface to a stream of a medium grooves of a second depth smaller than the predetermined first depth. The linearly extending channels may be arranged in a crossed arrangement. Preferably, the method is carried out as a two-step process. Expediently the method further includes the step of employing a laser for at least one of the steps. The laser can form the channels with dimple shaped depressions positioned in a row.

Method of fine-machining a workpiece surface to be supplied with a

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 method and tool for machining the surfaces of workpieces. The surface is finished by honing high pressure fluid jetting, and brushing. The tool used in this connection is provided with at least one tool element, such as a honing bar and/or a brush bar, and at least one spray or jetting mechanism.

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Neuffen, Germany

Ulrich Klink