Spade drill insert having curved cutting edges

Details Spade drill insert having curved cutting edges Spade drill insert having curved cutting edges

B - Operations, Transporting

23

B

B23B 51/00 (2006.01)

Patent

CA 2542815

A spade drill insert and drilling tool assembly is provided wherein the spade drill insert body comprises curved cutting edges and a lip groove having a trough substantially parallel to a plane formed through each adjacent curved cutting edge, which provides a significant improvement in chip formation during cutting operations.

L'invention concerne un insert de foret à langue d'aspic et un ensemble d'outils de forage. Le corps d'insert de foret à langue d'aspic comprend des bords tranchants incurvés et une rainure de bord comportant un creux sensiblement parallèle au plan formé par les bords tranchants incurvés adjacents, offrant une amélioration significative dans la formation de puce au cours des opérations de coupe.

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