Cutting insert with chip control

B - Operations – Transporting – 23 – D

Patent

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Details

B23D 1/00 (2006.01) B23B 27/16 (2006.01) B23B 51/04 (2006.01) B23C 5/10 (2006.01) B23C 5/22 (2006.01)

Patent

CA 2363115

The cutting insert (10) disclosed is a block of hard metal configured on at least one of its major faces (12, 18) to provide peripheral cutting edges (14) successively indexable about a central fastener (21) location to position each edge seriatim for cutting. The major face slopes downwardly and inwardly from the cutting edges to provide rake surfaces (16) of positive rake behind the cutting edges, and then rises as a sloping ledge (34) to a central boss (24). A series of depressions (32) disposed along the rake surface produce a ribbed chip which breaks more readily, and into smaller chips, easier to flush or otherwise remove from the cutting site.

L'invention concerne une pièce de coupe rapportée (10) constituée d'un bloc de métal dur, cette pièce présentant sur au moins un de ces cotés principaux (12, 18) des bords de coupe périphériques (14) successivement indexables autour de l'emplacement d'un organe d'assemblage central (21), ce qui permet de placer l'un après l'autre ces bords en position de coupe. Le coté principal est incliné vers le bas et vers l'extérieur depuis ces bords de coupe, afin de former derrière ceux-ci des surfaces à angle de coupe positif (16), ledit coté principal remontant ensuite sous la forme d'un rebord incliné (34) jusqu'à un bossage central (24). Une série de creux (32) est par ailleurs ménagée le long de la surface de coupe de manière à produire un copeau ondulé apte à se rompre plus rapidement et en copeaux de plus petite taille, lesquels sont plus faciles à évacuer ou à enlever du parterre de coupe.

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