Drill bit for non-linear drilling

Details Drill bit for non-linear drilling Drill bit for non-linear drilling

B - Operations, Transporting

23

B

B23B 51/00 (2006.01)

Patent

CA 2327937

A drill bit for boring non-linear holes in a workpiece, the drill bit having a generally elongate post, for mounting the drill bit to a tool; a generally elongate shank; and a head. The head has a front portion, a rear portion and there between a main body portion. A plurality of flutes are arranged in a generally helical shape along the main body portion, arched with respect to a longitudinal direction of the drill bit, each flute having an outer cutting edge arranged on an outside edge of the flute, to provide cutting capability in a direction substantially sideways compared to the longitudinal direction of the drill bit. A central point, arranged on the front portion of the head, is connected to at least one flute via a tapered first cutting portion, the first cutting portion being provided with a first cutting edge, to provide cutting capability in a direction substantially forwards. A forward facing roughing part is arranged on at least one flute and on the front portion of the head, the roughing part having a roughing edge, to provide further cutting capability in a direction substantially forwards. The rear portion of the head is connected to at least one flute via a tapered second cutting portion, the second cutting portion being provided with a second cutting edge, to provide cutting capability in a direction substantially rearwards. The rear portion of the head advantageously has a rearward facing roughing part, arranged at an outer portion on at least one of the plurality of flutes, the rearward roughing part having a rearward roughing edge, to provide further cutting capability in a substantially rearwards direction.

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