Spiral bit with direction function

The utility model relates to a drill bit field discloses a spiral bit with direction function, including drilling rod, guide structure and be used for the drill bit of drilling, guide structure sets up the periphery at the drilling rod, and guide structure includes a plurality of feather keys of arranging the drilling rod outside, and a plurality of feather keys are the spacer ring and wind and arrange in the drilling rod periphery, and the feather key is and is on a parallel with the drilling rod and arranges that the drill bit is connected in the tip of drilling rod. In tool joint, guide structure receives the restraint of pore wall, makes the drilling rod can not rock, under the direction of feather key, corrective action, the drill bit can not be in the uneven soil layer of soft or hard random incline to space between the feather key is great, and the boring mud that can not hinder spiral bit to produce in tool joint passes through, thereby guarantees that drilling is vertical. 本实用新型涉及钻头领域，公开了种带有导向功能的螺旋钻头