Kennametal Inc.

Kennametal Widia Produktions Gmbh & Co Kg

Andreas Wessel

Carsten Schwaner

Martin Hausmann

Jürgen Zastrozynski

Richard Fischer

Alfred Sladek

The invention relates to a milling cutting insert having a square or triangular shaped cutting face delimited in the plan view by a peripheral cutting edge having linear cutting edges () and curved cutting corners (). According to the invention, each of the cutting edges () comprises an inclined region () sloping toward a cutting corner (), extending beyond the tangential point () determined by the point at which the linear cutting edge () transitions into a curved cutting corner (), wherein adjacent thereto the cutting edge () rises prior to the point () determined by a cutting corner angle bisector (), wherein said rising region () extends to a cutting edge maximum () on the other side of the cutting corner () on the adjacent cutting edge (), which is linear in plan view, from where the cutting edge () continues, again inclined and sloping downward, resulting in a rotationally symmetric form having identically shaped cutting edges.

Milling cutting insert

The invention relates to a cutting insert, in particular for a milling work, with a basic body which respectively has on opposite sides peripheral cutting edges, which protrude beyond the respectively adjoining face regions (), descending at a positive rake angle, in the middle of which one or more planar supporting surfaces () are arranged, and with a central fastening hole () for receiving a tensioning screw. Arranged around the central fastening hole is at least one conical surface (), with a cone descending inwards, i.e. towards the fastening hole.

Cutting insert and milling tool

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Gelsenkirchen, Germany

Andreas Wessel