Drill bit for counterbore machining and drilling method of drill bit

Abstract

The invention discloses a drill bit for counterbore machining and a drilling method of the drill bit. The technical problems that in the prior art, machining is time-consuming, the machining efficiency is reduced, the coaxiality error of all levels of holes is large, and the machining quality is reduced are solved. The drill bit comprises a first drill bit body used for drilling and a second drillbit body connected with the first drill bit body and used for drilling a counterbore. The first drill bit body and the second drill bit body are coaxially distributed. The drilling method comprises the following steps: step 1, marking a hole forming position; step 2, aligning the bottom face of the first drill bit body with a to-be-formed hole position so that the first drill bit body and a to-be-formed hole are coaxially distributed; and step 3, starting the drill bit for drilling so as to achieve one-time hole forming. The drill bit is simple in structure, scientific and reasonable in design and convenient to use, the drill bit used for machining the counterbore is machined to be consistent with the counterbore, when the drill bit is used for machining the counterbore, one-time machining forming can be achieved, in this way, the counterbore machining efficiency is improved, and meanwhile, the coaxiality of all levels of holes can be effectively guaranteed.

Description

technical field [0001] The invention belongs to the technical field of mechanical structures, and in particular relates to a drill bit for counterbore processing and a drilling method thereof. Background technique [0002] The countersunk hole is a hole processed from the surface of an object to the inside of the object. It is often used to install bolts or other connecting parts. It is common in the field of machinery manufacturing and construction. The basic structure is as follows: Figure 9 with 10 shown. The countersunk hole generally includes two parts, namely the coaxially distributed hole and the counterbore. When installing the bolt, the hole matches the screw, and the counterbore is used to sink into the screw head, which can avoid the protrusion of the bolt and ensure the flatness of the installation plane. [0003] A large number of counterbores are often used in industry. When processing countersink holes in the traditional way, the main through hole is genera...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to provide a drill bit for countersink hole processing and its drilling method, to solve the technical problems of the prior art that the processing takes time and reduces the processing efficiency, and the coaxiality errors of the holes at all levels reduce the processing quality.

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