Komet Group Gmbh

Komet Group Holding Gmbh

Hendrik Nitzsche

Benno Spors

Gerhard Stolz

Hans Haidinger

Jacek Kruszynski

Henry Schuett

Uwe Kretzschmann

Henry Schütt

Manuel Mayer

A tool arrangement containing a tool holder and a tool having a tool head for processing workpieces and a shaft supporting the tool head, wherein the tool holder and the shaft each have a planar surface oriented transversely with respect to the axial direction of the tool holder and the shaft, the planar surfaces lying opposite one another. The tool holder and the shaft are connected non-rotatably and releasably to one another by a connecting mechanism which has a journal projecting in the axial direction and a receptacle which receives the journal.

Tool arrangement

The invention relates to a drilling tool for machine tools has a drill body, a cutting head arranged on the front face of the drill body and a shaft arranged at the end thereof, wherein the drill body has two chip flutes, which are delimited at their flanks by ribs and a first chip flute of which is spirally curved. A second chip flute is not spiraled or is spirally curved with a pitch differing from the first chip flute, preferably running in the same direction of rotation.

Drilling tool for machine tools and method for the production thereof

A drilling tool for machine tools has a drill body, a cutting head arranged on the front face of the drill body and a shaft arranged at the end thereof, wherein the drill body has two chip flutes, which are delimited at their flanks by ribs and a first chip flute of which is spirally curved. A second chip flute is not spiraled or is spirally curved with a pitch differing from the first chip flute, preferably running in the same direction of rotation.

An indexable insert for solid drills has four identical cutting edges () arranged at a distance above a supporting base () and each extending between two cutting-edge corners ('). The cutting edges are each bounded by a cutting face () and a clearance face (), with the inclusion of a wedge angle (b). Of the cutting edges (), one in each case is in an active operating position during the drilling operation. To permit optimum adaptation to the cutting conditions and drilling characteristics, varying over the length of the cutting edge of the drilling tool, it is proposed according to the invention that the height (h) of the four cutting edges (), measured from the plane of the supporting base (), and/or the clearance angle (a) varies over the length of the respective cutting edges ().

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Benningen, Germany

Hendrik Nitzsche