Cutting insert and cutting edge replacable cutting tool

B - Operations – Transporting – 23 – C

Patent

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Details

B23C 5/20 (2006.01) B23C 5/10 (2006.01)

Patent

CA 2757400

A cutting insert (10) according to the present invention includes two end surfaces (20) each having a main surface (34) usable as an attachment surface to a tool body, a peripheral side surface (22) extending between the two end surfaces and a plurality of cutting edge portions (32) each formed at an intersection between each end surface and the peripheral side surface. Each cutting edge portion (32) includes a corner edge (40) formed at a corner of a related end surface (20), a major cutting edge (42) extending from one end of the corner edge (40) and extending so as to depart from an intermediate plane defined to be perpendicular to the first axis (A) and to include the second axis (B), and a minor cutting edge (44) extending from the other end of the corner edge (40) and extending in a direction to approach the intermediate plane.

La présente invention concerne une plaquette de coupe (10) qui possède deux surfaces d'extrémité (20), chacune des surfaces d'extrémité possédant une surface principale (34) en tant que surface de siège, une surface périphérique qui unit les deux surfaces d'extrémité et une pluralité d'arêtes tranchantes (32) formées à l'intersection de chacune des surfaces d'extrémité et de la surface périphérique. Chacune de la pluralité d'arêtes tranchantes (32) comprend une arête d'angle (40) formée à l'angle de chacune des surfaces d'extrémité, une arête de coupe principale (42) qui s'étend à partir d'une extrémité de l'arête d'angle (40) pour s'éloigner d'un plan intermédiaire qui est perpendiculaire à un premier axe (A) et comprend un second axe (B) et une arête secondaire (44) qui s'étend à partir de l'autre extrémité de l'arête d'angle (40) vers le plan intermédiaire.

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