Tangential cutting insert and milling cutter

Details Tangential cutting insert and milling cutter Tangential cutting insert and milling cutter

B - Operations, Transporting

23

C

B23C 5/22 (2006.01)

Patent

CA 2506069

A tangential milling cutting insert (10) having two identical opposing end surfaces (12) with two identical opposing major side surfaces (18) of a generally parallelogrammatic shape and two identical opposing minor side surfaces (16) extending between them. Each end surface (12) has a peripheral edge (40) containing cutting edges (52) and four corners of which two diagonally opposed corners are lowered (24) and the other two are raised (26). Each end surface is provided with an abutment (28) member having an abutment surface. In each cross section of the cutting insert taken in a plane parallel to a minor plane of the cutting insert, the abutment surface (30) is closer to the median plane than a respective leading section of a major cutting edge (54).

La présente invention concerne une plaquette amovible (10) de coupe pour usinage tangentiel qui possède deux surfaces d'extrémité opposées identiques (12) avec deux grandes surfaces latérales (18) opposées identiques d'une forme générale de parallélogramme et deux petites surfaces latérales opposées identiques s'étendant entre elles. Chaque surface d'extrémité (12) possède une arête périphérique (40) contenant des arêtes coupantes (52) et quatre coins dont deux coins opposés en diagonale sont abaissés (24), les deux autres étant relevés (26). Chaque surface d'extrémité est pourvu d'un élément de butée (28) possédant une surface de butée. Dans chaque coupe de cette plaquette amovible prise dans un plan parallèle à un plan inférieur de cette plaque amovible, la surface de butée (30) est plus proche du plan médian que le bord d'attaque respectif d'une grande arête coupante.

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