Drill

Details Drill Drill

B - Operations, Transporting

23

B

77/30, 255/68

B23B 51/02 (2006.01) B23B 51/00 (2006.01)

Patent

CA 1166485

ABSTRACT OF THE DISCLOSURE A drill formed in its shank with chip discharging flutes having a small flute width ratio of 0.5 to 0.02 to give increased torsional rigidity to the drill shank, whereby the drill is adapted to form holes, especially deep holes, with an improved cutting efficiency.

384826

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