The invention discloses a palm back protection and
chip removal structure of a three-tooth
drill bit, which relates to the technical field of drilling equipment, and specifically comprises a
drill bit claw body, wherein the palm back position of the
drill bit claw body is respectively fixedly connected with ball teeth and flat teeth for drilling and
grinding, and the ball teeth and flat teeth are arranged in "L" shape at the palm back and palm tip positions of the
drill bit claw body in sequence, and a surfacing wear-resistant
alloy is fixedly connected at the palm back position of the
drill bit claw body near the palm tip, and the surfacing wear-resistant
alloy is located at the right side of the ball teeth and flat teeth. By setting the ball teeth, flat teeth and trapezoidal
discharge structure, the
chip removal flow channel is increased, the
chip removal resistance is reduced, and the chip removal is smoother. The problem that the unreasonable design of the palm back protection and
slag removal structure of the three-cone
drill bit leads to poor rock
slag discharge, which not only prolongs the wear time of the rock
slag and the three-cone drill, but also makes the rock slag particle size smaller and smaller, thereby easily destroying the sealing
system of the three-cone drill and entering the bearing.