Detachable drill bit

Abstract

The invention relates to the field of mining devices, in particular to a detachable drill bit. The detachable drill bit adopts modular design, the integrated drill bit is divided into a drill blade, a drill shoulder and a drillstock which are detachable, the drill blade, the drill shoulder and the drillstock can be individually replaced when one portion is damaged, a standby drill blade is arranged in the internal space of the drillstock, and the detachable drill bit is more convenient to use. The drill bit is modular, and the mining cost is reduced. The drill bit can be detached into several portions and is convenient to use. A standby drill bit is provided so that the mining devices can work continuously. The cutting area is enlarged, and mining efficiency is improved.

Description

technical field [0001] The invention relates to the field of mining equipment, in particular to a detachable drill bit. Background technique [0002] In mining equipment, the drill bit is a very important component, and the drill bit is the tool on the drill, drilling machine, and drilling machine. Can create holes in workpiece or rock. Existing drill bits mainly include twist drills, flat drills, deep hole drills, reaming drills, center drills, hollow drills, etc. [0003] When digging a hole, the drill bit rotates around the vertical axis and moves axially at the same time. The soil is cut under the action of the torque and axial force of the drill bit, and is destroyed and loosened under the action of the extrusion and centrifugal force of the working blades, forming a soil flow and pressing to the pit wall, and at the same time, it is 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 aroun...

AI Technical Summary

Problems solved by technology

In order to save cost, many drill bits adopt welded shank structure. The original drill bit is made of carbide as a whole, and the rear drill shank is made of stainless steel, which greatly reduces the cost. However, due to the use of different materials, its dynamic concentricity is not as good as that of solid carbide drill bits. , especially in small diameters

[0005] The current drill bits are all integrated. When the blade of the drill bit is damaged or worn, the drill bit is basically scrapped. This situation has caused a great waste of resources and increased the cost of mining work.

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