Concave cutter bit

Details Concave cutter bit Concave cutter bit

E - Fixed Constructions

21

B

E21B 10/50 (2006.01)

Patent

CA 2198102

A concave cutter bit which has a bit body that contains a concavity in the axially forward end thereof. A plurality of cutter inserts are brazed to the bit body at the periphery of the open end of the concavity. The cutter inserts are spaced apart in such a fashion so that a gap exists between adjacent cutter inserts that is of sufficient size to prevent the formation of a continuous braze joint between any adjacent cutter inserts.

Un outil de coupe concave a un corps qui comprend une concavité à son extrémité axiale avant. Plusieurs éléments de coupe encastrés sont brasés sur le corps de l'outil à la périphérie de l'extrémité ouverte de la concavité. Ls éléments de coupe encastrés de l'outil sont espacés de manière à avoir une distance entre les éléments de coupe encastrés adjacents suffisante pour éviter la formation d'une brasure continue entre deux éléments de coupe adjacents quelconques.

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