Drill bit applied to machining process

Abstract

The invention discloses a chamfering drill bit applied to a machining process. The chamfering drill bit comprises a drill stock, a drill body and a drill tip, wherein the drill tip is arranged at the front end of the drill body; the drill stock is arranged at the rear end of the drill body; the drill body is provided with double chamfer cutting edges; and chamfering directions of the double chamfer cutting edges are reverse. According to the technical scheme provided by the invention, a knife relieving groove is additionally arranged in a part of the drill body of a straight flue drill bit, and the chamfer cutting edges are additionally arranged at the two ends of the knife relieving groove, so that the knife replacing time is effectively saved, the effect of increasing the machining efficiency is obvious, a machining step of chamfering on a reverse face of the through hole is reduced, or the working load and the aesthetic measure brought by manual chamfering is removed, the degree of automatic machining is improved, and the three functions of drilling, chamfering on a front face of the hole and chamfering on a back face of the hole are realized.

Description

technical field [0001] The invention belongs to the technical field of manufacturing auxiliary production equipment in mechanical processing technology, and in particular relates to a drill bit used in mechanical processing technology. Background technique [0002] At present, the drill bit is the most common tool in mechanical processing, and its main function is to drill holes on relatively flat processing surfaces. [0003] There are various drill bit structures, and the common drill bit structures include the following structural forms, [0004] What is claimed is: 1. A drill bit comprising a shank having a tip with two cutting inserts lying on a main plane, the cutting inserts having short central cutting edges oriented on a common second plane. The cutting edge forms a point-shaped central cutting edge for entering the workpiece and thereby centering the drill bit. On the cutter bit shank, there are two flutes extending from the tip to the bottom. [0005] 2. A dril...

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is that, in order to improve the processing efficiency, the drill bits in the prior art are often designed into a stepped shape, so as to achieve the effect of drilling and chamfering. The drill bits in the prior art generally use inc

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