Multifunctional variable-diameter drill bit for electric variable-diameter head-shaking drilling machine

Abstract

The invention discloses a multifunctional variable-diameter drill bit for an electric variable-diameter head-shaking drilling machine. The drill bit comprises a conveying device, wherein a variable-diameter drill body is formed by sequentially embedding a first drill bit, a second drill bit and a third drill bit in a spiral connection mode, a first grinding drill handle is connected to the tail end of the first drill bit in a welding mode, a second grinding drill handle is connected to the tail end of the second drill bit in a welding mode, and a third grinding drill handle is connected to thetail end of the third drill bit in a welding mode; diamond abrasive particles are uniformly embedded in each of the first grinding drill handle, the second grinding drill handle and the third grinding drill handle; and the head end of the first drill bit and the head end of the second drill bit are spirally sleeved with drill bit sleeve heads through a spiral connecting shaft. According to the drill bits, firstly, the grinding drill handles are arranged, and the diamond abrasive particles are embedded in the grinding drill handles, inner walls of drilled holes can be ground through the grinding drill handles during drilling, so that the inner surface walls of the drilled holes are more smooth and flat, and the quality of the drilled holes are improved.

Description

Technical field [0001] The invention relates to the technical field of electric variable-diameter oscillating head drilling machines, in particular to a multifunctional variable-diameter drill bit for electric variable-diameter oscillating head drilling machines. Background technique [0002] Drilling machine refers to a machine tool that mainly uses a drill to make holes in a workpiece. Usually the rotation of the drill bit is the main movement, and the axial movement of the drill bit is the feed movement. The drilling machine has simple structure and relatively low machining accuracy. It can drill through holes, blind holes, replace special tools, expand, counter-hole, ream or tap and other processing machines. According to the purpose and structure, it is mainly divided into the following categories, vertical The worktable and headstock can move vertically on the column, which is used to process small and medium-sized workpieces. Bench type, referred to as bench drill. A sma...

AI Technical Summary

Problems solved by technology

[0003] The multifunctional variable diameter drill bit for electric variable diameter rotary head drilling machine is a kind of drill bit for variable diameter rotary head drilling machine. The structure of the traditional variable diameter rotary head drilling machine bit is relatively simple, and the inner wall of the processed hole is rough, and it is easy to produce burrs, so it needs to be deburred. Processing, single function, inconvenient operation

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