A cutting insert

B - Operations – Transporting – 23 – C

Patent

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Details

B23C 5/22 (2006.01)

Patent

CA 2336415

The trailing mounting portion (4) has upper, lower and side walls (12, 13) extending from the front cutting portion (2) to a rear abutment wall (14) of the trailing mounting portion (4) oriented generally co-directionally with said operative front surface (3). The side walls (13) of the trailing mounting portion (4) meet with the rear abutment wall (14) at rear edges (15). The rear abutment wall (14) comprises two lateral surfaces (20) and a central surface (22) therebetween. The lateral surfaces (20) converge from the rear edges (15) in the direction towards the front cutting portion (2), and the central surface (22) protrudes, in the direction away from the front cutting portion (2), outwardly from adjacent portions of the lateral surfaces (20) and meeting therewith at merging edge regions (23).

La présente invention concerne une plaquette de coupe. Le bloc de montage arrière (4) comporte des parois supérieure, inférieure et latérales (12, 13) allant du bloc de coupe avant (2) à une paroi d'appui arrière (14) sur le bloc de montage arrière (4) et généralement orientée dans le même sens que la surface d'attaque avant (3). Les parois latérales (13) du bloc de montage arrière (4) rejoignent la paroi d'appui 1(4) au niveau des bords arrière (15). La paroi d'appui arrière (14) comporte deux surfaces latérales (20) séparées par une surface centrale (22). Les surfaces latérales (20) convergent des bords arrière (15) vers le bloc de coupe avant (2) et la surface centrale (22) fait saillie, dans le sens opposé au bloc de coupe avant (2), à partir des zones adjacentes des surfaces latérales (20) qu'elle rejoint au niveau des zones latérales (23).

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