A cutting insert with a rounded corner

Details A cutting insert with a rounded corner A cutting insert with a rounded corner

B - Operations, Transporting

23

C

B23C 5/20 (2006.01) B23C 5/06 (2006.01)

Patent

CA 2244854

A cutting insert (1) for use in a milling cutter for a face milling has upper, lower and side surfaces and at least one pair of main and minor cutting edges (10, 11) formed by the intersection between the upper surface (5) and an adjacent side surface (7). The cutting edges (10, 11) merge via a cutting corner portion (12) of a relatively large radius, which is provided with a land (15) formed at the upper surface (5) of the insert. The land (15) is inclined to the insert lower surface at an inclination angle which continuously varies from a negative value at an area of the corner portion (12) adjacent the main cutting edge (10) to a positive value at an area of the corner portion (12) adjacent the minor cutting edge (11).

Elément de coupe (1) rapporté à utiliser avec une fraise à surfacer, qui comporte des surfaces supérieure, inférieure et latérales et au moins une paire d'arêtes de coupe principale et secondaire (10, 11) formées par l'intersection entre la surface supérieure (5) et une surface latérale adjacente (7). Les arêtes de coupe (10, 11) se rejoignent au niveau d'un angle de coupe (12) de rayon relativement large, doté d'un témoin (15) formé sur la surface supérieure (5) de l'élément. Ledit témoin (15) est incliné par rapport à la surface inférieure de l'élément à un angle d'inclinaison qui varie continuellement d'une valeur négative au niveau d'une zone de la partie angle (12) adjacente à l'arête de coupe principale (10) à une valeur positive au niveau d'une zone de la partie angle (12) adjacente à l'arête de coupe secondaire (11).

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