Komet Praezisionswerkzeuge Robert Breuning Gmbh

Komet Praezisonswerkzeuge Robert Breuning Gmbh

Konstantin Baxivanelis

Gerhard Scheer

Jacek Kruszynski

Henry Schuett

Hans Haidinger

Achim Rothenstein

Helmut Morlock

Michael Koecher

Dietmar Bolkart

The invention relates to a device for releasably connecting two coaxially aligned tool parts () which can be axially pressed against each other on separating surfaces () that face each other with a clamping device. According to the invention, at least one of the separating surfaces () is divided into several axially rigid and torsionally soft bearing segments () which are spaced in a peripheral direction, in order to dampen the torsional oscillations that occur during the work process and reduce noise.

Device for connecting two tool parts

The invention relates to a drilling tool for machine tools and to a method for the production thereof. The drilling tool has at least one chip conveyor groove ( ) and at least one functional channel ( ). In order to produce the body of the drill ( ), the wall of a tubular metal blank is simultaneously impinged upon by substantially radially oscillating form-giving forces in several forming sections spread over the periphery, moving in an axial direction along the surface of the blank, whereby at least one chip conveyor groove ( ) is shaped and at least one functional channel ( ) is formed. When the chip conveyor grooves ( ) are formed on at least two interspaced forming sections in a peripheral direction in the wall of the blank ( ), the parts of the wall in the area of two opposite-lying chip conveyor grooves ( ) come to rest against each other in a sealed manner, defining at least two functional channels ( ) on the inner surfaces thereof. The joint ( ) thus formed can be closed by means of cold welding or soldering.

Drilling tool for machine tools and method for the production thereof

A cutting insert shapes metallic workpieces by chipping. The cutting insert is especially suited for use in solid drills or double-bit cutters. It has at least one cutting edge which is delimited by a chipping face and a flank extends between two cutting corners. The cutting edge includes two sections which form an obtuse angle and in the area of a roof-shaped tip merge into each other. The chipping face has a raised shaped chipping element which extends from the inside of the chipping face as far as the cutting edge, from where it reaches beyond the roof-shaped tip partially across the two sections of the cutting edge. The cutting edge sections and the adjoining chipping faces include a step delimiting the shaped chipping element, the edges of which step serve as additional cutting edges of the shaped chipping element.

Cutting insert for shaping by chipping

Drilling tools for machine tool and method of producing the same

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Besigheim, Germany

Konstantin Baxivanelis