Drill

Details Drill Drill

B - Operations, Transporting

23

B

B23B 51/04 (2006.01)

Patent

CA 2727117

Drill with a straight chucking groove (4), with a convexly curved main cutting edge (1) with, adjacent to the main cutting edge (1), a convexly designed region of groove base (2) and with, adjacent to the convexly designed region of the groove base (2), a concavely designed groove base (12) or a concavely curved main cutting edge (11) with, adjacent to the main cutting edge, a concavely designed groove base (12) with, adjacent to the concavely designed region of the groove base (12), a convexly designed region of the groove base (2).

L'invention concerne un foret doté d'une rainure à copeaux rectiligne (4), d'une arête principale fléchie de manière convexe (1) comprenant une zone de fond de rainure (2) conçue de manière convexe et contiguë à l'arête principale (1) et un fond de rainure (12) conçu de manière concave et contigu à la zone de fond de rainure (2) conçue de manière convexe, ou bien d'une arête principale (11) fléchie de manière concave comprenant un fond de rainure (12) conçu de manière concave et contigu à l'arête principale et une zone de fond de rainure (12) conçue de manière convexe et contiguë à la zone de fond de rainure (2) conçue de manière concave.

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