Ceratizit Austria Gesellschaft M.b.h.

Plansee Tizit Aktiengesellschaft

Christian Ertl

Josef Prast

Wolfgang Koch

A milling tool with an axis of rotation D has a tool shank and a cutter region. The cutter region has a planar cutting edge running approximately perpendicularly to the axis of rotation D and merges peripherally into a main cutting edge and centrally into a secondary cutting edge. The secondary cutting edge is offset rearwardly from the planar cutting edge in the direction of the axis of rotation D. The transitional zone between the planar cutting edge and the secondary cutting edge has a notch produced as a cutting edge portion. The rearmost point of this notch, as seen in an end view in the direction of the axis of rotation D, lies behind the forward-most point of the secondary cutting edge, the angle &#x3b1; between the planar cutting edge and the adjoining portion of the notch lying in the range of 90&#xb0; to 175&#xb0;, and the angle &#x3b2; between the planar cutting edge and that portion of the notch adjoining the secondary cutting edge lying in the range of 3&#xb0; to 90&#xb0;. The angle &#x3b3; between that portion of the notch adjoining the secondary cutting edge and the secondary cutting edge lies in the range of 90&#xb0; to 177&#xb0;.

Milling tool

A cutting tool for high-speed machining has at least one cutting insert that is interchangeably mounted to a main body of the tool. At least parts of the supporting surface of the cutting insert and of the receiving surface of the main body of the tool, when viewed in cross section perpendicular to the axis of rotation, are of an approximately V-shaped configuration and are engaged with each other. The crown region and also at least one of the end regions of the V-shaped supporting surface and receiving surface are mutually relieved. A bearing surface on the main body of the tool, in order to radially support the cutting insert, is arranged in such a way that a mounted cutting insert is tilted such that the supporting surface of the main body and the receiving surface come into mutual contact at only two points.

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Ehenbichl, Austria

Christian Ertl