The invention relates to the technical field of
alloy drill bits, in particular to a
drill bit with an automatic
chip removal function. The
drill bit comprises a shank part, a cutter bar, main cuttingedges and a cooling hole. The shank part and the cutter bar are integrally formed, the cutter bar is provided with an edge
ditch, an edge belt and an edge back, the edge belt is arranged between theedge
ditch and the edge back, a rear cutter face and a front cutter face are arranged at the tip end, far away from the shank part, of the cutter bar, a cooling hole is formed in the rear cutter face,the
cutting edge of the front cutter face is a main
cutting edge, and the tip end is further provided with a transverse edge. By means of the designed
edge type and the wide
chip containing groove, namely the wide edge
ditch capable of smoothly discharging
chip, the
low resistance of an edge drill is reduced, and the ability of stable chip breaking is improved; due to the
cutting segmentation property and the shape stability
system of the designed
drill bit, the problem that chips are likely to wind is solved, the
drill bit can adapt to a wide range of
machining materials, and stable and high-efficiency
machining is realized; and due to the three main cutting edges which are innovatively designed, the balance and stability of the tool in
machining are improved.