half-web bit

Abstract

The utility model discloses a half edge drill bit, including drill head main part, the top of drill head main part is provided with triangle recess, the triangle recess includes the vertical plane of passing drill head main part vertex and the horizontal plane of the angle with vertical plane is the horizontal plane of the angle with vertical plane, the top of drill head main part includes A point, B point, C point, D point, O point, C point to A point's length is equal to half of drill head main part diameter. The utility model discloses reasonable, through setting up triangle recess on traditional full edge drill bit, can form the blade angle at the cone tip of drill bit, can easily position when drill bit rotates, is not easy to slip, and the top of drill bit can form four working cutting edges, and the efficiency is higher when working.

Description

Technical Field

[0001] This utility model relates to the field of drill bit technology, and in particular to semi-forked drill bits. Background Technology

[0002] A twist drill is a tool that drills round holes in a workpiece by rotating its blades relative to a fixed axis. It gets its name from the spiral shape of its chip flutes, which resemble a twisted rope. Two flutes are the most common type. Twist drills can be mounted on manual or electric handheld drilling machines, or used on drilling machines, milling machines, lathes, and even machining centers.

[0003] like Figure 4 and Figure 5 Traditional full-edge drill bits have a conical top with a lack of cutting edge at the tip, making them prone to slipping and difficult to position when rotating. Furthermore, they only have two working edges on either side of the tip, resulting in low efficiency. Utility Model Content

[0004] This invention provides a semi-forked drill bit to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A semi-cut drill bit includes a drill bit body. A triangular groove is provided on the top of the drill bit body. The triangular groove includes a vertical plane passing through the vertex of the drill bit body and a horizontal plane forming an angle of ° with the vertical plane. The top of the drill bit body includes points A, B, C, D, and O. The length from point C to point A is equal to half the diameter of the drill bit body.

[0006] As a further improvement to this technical solution: the drill shank of the drill bit body is cylindrical, the drill rod of the drill bit body is threaded, and the top of the drill bit body is conical.

[0007] Compared with the prior art, the beneficial effects of this utility model are: The device is reasonably designed. By setting a triangular groove on the traditional full-face drill bit, a cutting edge can be formed at the tip of the drill bit. The drill bit can be easily positioned when rotating, and it is not easy to slip. In addition, four working cutting edges can be formed at the top of the drill bit, making the work more efficient.

[0008] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0009] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a three-dimensional structural diagram of the semi-forked drill bit proposed in this utility model; Figure 2 This is a front view structural diagram of the semi-forked drill bit proposed in this utility model; Figure 3 This is a top view of the semi-forked drill bit proposed in this utility model. Figure 4 This is a three-dimensional structural diagram of an existing all-point drill bit; Figure 5 This is a front view structural diagram of an existing full-edge drill bit.

[0010] The attached diagram lists the components represented by each number as follows: 1. Drill bit body; 2. Triangular groove. Detailed Implementation

[0011] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described in more detail below by way of example with reference to the accompanying drawings. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0012] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0013] Please see Figures 1-3 In this embodiment of the present invention, the semi-sharp drill bit includes a drill bit body 1. A triangular groove 2 is provided on the top of the drill bit body 1. The triangular groove 2 includes a vertical plane passing through the vertex of the drill bit body 1 and a horizontal plane forming an angle of 90° with the vertical plane. The top of the drill bit body 1 includes points A, B, C, D, and O. The length from point C to point A is equal to half the diameter of the drill bit body 1. The top of the drill bit body 1 includes four cutting edges, which are from point A to point B, from point C to point D, from point O to point A, and from point O to point C.

[0014] The drill shank of the drill bit body 1 is cylindrical, the drill rod of the drill bit body 1 is threaded, and the top of the drill bit body 1 is conical.

[0015] The working principle of this utility model is as follows: After creating the triangular groove 2, two additional cutting edges OA and OC can be formed on the traditional full-edge drill bit's AB and CD cutting edges, making the drill bit's cutting edges sharper. The top of the drill bit is set in a semi-sharp and semi-blunt configuration. In the semi-sharp part, the vertex O and the two cutting edges OA and OC work first. Since the vertex O is a sharp angle, it can prevent slippage during the initial working process when drilling on hard objects, and can accurately position the drill bit, eliminating the need for a punch to mark the positioning point when drilling hard objects. The semi-blunt part is a small arc surface, which can support the two cutting edges OA and OC, allowing them to function more effectively.

[0016] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A semi-finished drill bit, comprising a drill bit body (1), characterized in that, The top of the drill bit body (1) is provided with a triangular groove (2). The triangular groove (2) includes a vertical plane passing through the vertex of the drill bit body (1) and a horizontal plane forming an angle of 90° with the vertical plane. The top of the drill bit body (1) includes points A, B, C, D and O. The length from point C to point A is equal to half the diameter of the drill bit body (1).

2. The semi-forked drill bit according to claim 1, characterized in that, The drill shank of the drill bit body (1) is cylindrical, the drill rod of the drill bit body (1) is threaded, and the top of the drill bit body (1) is conical.

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