Long sharp-point carbonized drill

Abstract

The invention discloses a long sharp-point carbonized drill. The long sharp-point carbonized drill is formed by connecting a drill handle and a drill body, and is characterized in that the drill body is structurally and integrally formed by a drill point and a drill main body; a front cutting blade is arranged on the surface of the drill point; the drill main body is integrally formed by a drill main body front end shaped like a transverse Arabic number 'eight' and a cylindrical drill main body back end, wherein the two ends of the drill main body front end are straight end faces; a horizontally-arranged S-shaped auxiliary cutting blade is arranged on the drill main body front end along the portion shaped like the transverse Arabic number 'eight', and the S-shaped auxiliary cutting blade and the drill main body are integrally formed; the drill handle is of a thin and long cylindrical structure, and a positioning groove is formed in the portion, close to the end, of one end of the drill handle. By means of the long sharp-point carbonized drill, the front cutting blade, the S-shaped auxiliary cutting blade, a scrap discharging groove and the positioning groove are effectively combined, two-stage drilling is achieved, and one-time forming is achieved; in addition, scrap discharging is smooth, the cut faces of drilled holes are smooth, and installation is firm.

Description

technical field [0001] The invention belongs to the field of drill bits, in particular to a carbonized drill bit with a long pointed nose. Background technique [0002] A tool on a drill, drill press, or drilling machine that creates holes in a workpiece or rock. Xu Chi's "Goldbach's Conjecture Oil Head": "In 1956, the drilling materials in our country were a little tight, and the drill bits were not enough." During the work process, the drill bit rotates with the vertical shaft and moves axially at the same time. The soil is cut under the torque and axial force of the drill bit, and loosened under the extrusion and centrifugal force of the working blades, forming a soil flow that is pressed to the pit wall and lifted to the surface along the page. When the soil flow moves to the place where there is no pit wall, the broken soil is thrown around the pit due to the centrifugal force, and the digging process is completed. [0003] Drill bits in the prior art mostly use one d...

AI Technical Summary

Problems solved by technology

[0003] The drill bits in the prior art mostly use one drill bit for drilling, the drilling strength is low, and the cutting is not smooth, which will affect the drilling work of the drill bit and greatly reduce the working efficiency of the drill bit

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