Cutting insert and cutting tool

Details Cutting insert and cutting tool Cutting insert and cutting tool

B - Operations, Transporting

23

B

B23B 51/10 (2006.01)

Patent

CA 2745390

A double-sided cutting insert (24) has top and bottom surfaces (32,34) and two major side surfaces (38) connected by two minor side surfaces (40). Each major side surface has two distinct relief surfaces (42) which are inclined in opposite directions and merge at a transition surface (44) extending between top and bottom surfaces. A first major cutting edge (46) is defined between the first relief surface and the top surface and a second major cutting edge is defined between the second relief surface and the bottom surface. Each major cutting edge is tangent to an associated transition cutting edge defined between the transition surface and the insert top or insert bottom surface. An insert holder (22) for the insert has three support sections (74,76,78) accordant with three abutment sections of the insert.

L'invention porte sur un insert de coupe à deux côtés (24) comprenant des surfaces supérieure et inférieure (32, 34) et deux surfaces latérales principales (38) reliées par deux surfaces latérales secondaires (40). Chaque surface latérale principale comporte deux surfaces en relief distinctes (42) inclinées dans des directions opposées et qui se rejoignent au niveau d'une surface de transition (44) s'étendant entre les surfaces supérieure et inférieure. Un premier bord de coupe principal (46) est défini entre la première surface en relief et la surface supérieure et un second bord de coupe principal est défini entre la seconde surface en relief et la surface inférieure. Chaque bord de coupe principal est tangent à un bord de coupe de transition associé défini entre la surface de transition et la surface inférieure d'insert ou la surface supérieure d'insert. Un porte-insert (22) pour l'insert comprend trois sections de support (74, 76, 78) concordant avec trois sections de butée de l'insert.

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