CN220921008U

CN220921008U - Anti-slip and anti-offset drill bit

Info

Publication number: CN220921008U
Application number: CN202323008942.8U
Authority: CN
Inventors: 朱炜峰
Original assignee: Jiangsu Boan Tools Co ltd
Current assignee: Jiangsu Boan Tools Co ltd
Priority date: 2023-11-08
Filing date: 2023-11-08
Publication date: 2024-05-10
Anticipated expiration: 2033-11-08

Abstract

The utility model discloses an anti-slip and anti-offset drill bit, which comprises: the drill bit comprises a drill bit body and an anti-deviation structure, wherein the drill bit body comprises a drill bit body, a drill shank and a drill bit, and two first cutting edges for cutting are symmetrically arranged on the surface of the drill bit. This anti-skidding anti-deflection drill bit, through setting up anti-deflection structure, utilize the assembly structure to install anti-deflection head on the drill bit, when the drill bit body is to the machined surface drilling of inclined plane or circular arc face, first second cutting edge can be at first with inclined plane or circular arc face contact, because second cutting edge is perpendicular setting with the bearing in the drill shank, consequently can avoid the second cutting edge excessively to receive single face radial force to lead to the deflection, thereby usable second cutting edge becomes the plane mutually perpendicular with inclined plane or circular arc face smear metal, the second cutting edge continues to move down and can become the machined surface smear metal round hole, afterwards first cutting edge can be with the round hole contact of second cutting edge smear metal, thereby can ream the round hole, and then can improve the antiskid of drill bit body and anti-deflection performance.

Description

Anti-slip and anti-offset drill bit

Technical Field

The utility model belongs to the technical field of hardware tools, and particularly relates to an anti-slip and anti-offset drill bit.

Background

A twist drill is a tool for drilling a circular hole in a workpiece by rotating the twist drill about a fixed axis. The chip flute is spiral and is similar to a twist.

However, when the conventional twist drill is used for drilling an inclined plane or an arc surface, the drill bit can be subjected to single-sided radial force due to the fact that the drilling center is not perpendicular to the drilling surface, and a serious deflection phenomenon can be generated on a cutting edge, so that the drill bit is broken and the hole is inclined. To this end, we propose an anti-slip and anti-deflection drill bit.

Disclosure of utility model

The utility model aims to provide an anti-slip and anti-offset drill bit, which aims to solve the technical problems in the background technology.

In order to achieve the above purpose, the specific technical scheme of the utility model is as follows: an anti-slip and anti-migration drill bit, comprising:

The drill bit comprises a drill bit body, a drill handle and a drill bit, wherein the surface of the drill bit is symmetrically provided with two first chip cutting edges for cutting;

The anti-offset structure comprises an anti-offset head, and four second cutting edges for cutting are arranged on the left side face of the anti-offset head in a circumferential array.

Preferably, one end of the anti-deflection head, which is far away from the second cutting edge, is provided with an assembling structure which can be assembled with the drill into a whole.

Preferably, the assembly structure comprises a limiting block fixedly arranged at the right end of the anti-deflection head, a limiting groove matched with the limiting block is formed in the left end of the drill bit, and an assembly bolt is connected with the surface of the drill bit in a threaded manner.

Preferably, the threaded end of the assembly bolt extends to the inside of the limit groove, the pressing plate is connected in a rotating mode, and the pressing groove matched with the pressing plate is formed in the surface of the limit block.

Preferably, the included angle between the first cutting edge and the central axis of the drill handle is 60 degrees, and the second cutting edge is perpendicular to the bearing in the drill handle.

Preferably, the material of the anti-deflection head and the material of the second cutting edge are both made of cemented carbide materials.

Preferably, chip grooves are formed in the surfaces of the drill body, the drill bit and the anti-deflection head.

The anti-slip and anti-offset drill bit has the following advantages:

this anti-skidding anti-deflection drill bit, through setting up anti-deflection structure, utilize the assembly structure to install anti-deflection head on the drill bit, when the drill bit body is to the machined surface drilling of inclined plane or circular arc face, first second cutting edge can be at first with inclined plane or circular arc face contact, because second cutting edge is perpendicular setting with the bearing in the drill shank, consequently can avoid the second cutting edge excessively to receive single face radial force to lead to the deflection, thereby usable second cutting edge becomes the plane mutually perpendicular with inclined plane or circular arc face smear metal, the second cutting edge continues to move down and can become the machined surface smear metal round hole, afterwards first cutting edge can be with the round hole contact of second cutting edge smear metal, thereby can ream the round hole, and then can improve the antiskid of drill bit body and anti-deflection performance.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic view of a schematic top-down construction of a drill bit of the present utility model;

fig. 3 is a schematic diagram of a front sectional structure of a drill bit according to the present utility model.

The figure indicates: 1 drill body, 2 drill shank, 3 first cutting edge, 4 anti-deflection head, 5 second cutting edge, 6 drill bit, 7 stopper, 8 assembly bolt, 9 press plate, 10 junk slots.

Description of the embodiments

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in numerous different ways without departing from the spirit or scope of the embodiments of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

In the description of the embodiments of the present utility model, it should be understood that the terms "length," "vertical," "horizontal," "top," "bottom," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the embodiments of the present utility model and to simplify the description, rather than to indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

The following disclosure provides many different implementations, or examples, for implementing different configurations of embodiments of the utility model. In order to simplify the disclosure of embodiments of the present utility model, components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit embodiments of the present utility model. Furthermore, embodiments of the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed.

For a better understanding of the objects, structure and function of the present utility model, a non-slip anti-migration drill bit according to the present utility model will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 3, an anti-slip and anti-offset drill bit of the present utility model includes: bit body and anti-migration structure.

The drill bit body comprises a drill bit body 1, a drill shank 2 and a drill bit 6, two first cutting edges 3 used for cutting are symmetrically arranged on the surface of the drill bit 6, and an included angle between each first cutting edge 3 and the central axis of the drill shank 2 is 60 degrees.

The anti-deflection structure comprises an anti-deflection head 4, four second cutting edges 5 for cutting are arranged on the left side surface of the anti-deflection head 4 in a circumferential array, the second cutting edges 5 are perpendicular to a bearing in the drill handle 2, and the anti-deflection head 4 and the second cutting edges 5 are made of hard alloy materials.

The one end that second cutting edge 5 was kept away from to prevent partially first 4 is provided with the assembly structure that can assemble as an organic wholely with drill bit 6, and assembly structure is including fixed mounting at stopper 7 of preventing partially first 4 right-hand member, and the spacing groove with stopper 7 looks adaptation is seted up to the left end of drill bit 6, and the surface threaded connection of drill bit 6 has assembly bolt 8, and the screw thread end of assembly bolt 8 extends to the inside of spacing groove, and is connected with the pressure plate 9 of rotating, and the surface of stopper 7 has seted up the pressure plate 9 looks adaptation with the pressure plate groove of supporting.

The surface fixed mounting of stopper 7 has the dog, and the baffle groove with dog looks adaptation has been seted up to the inner wall of spacing groove, inserts spacing inslot with stopper 7, and the baffle can insert the baffle inslot this moment, avoids stopper 7 to rotate in the spacing inslot, screws up assembly bolt 8 afterwards, drives to support clamp plate 9 contact and supports the pressure groove and fix stopper 7 to can assemble anti-deflection head 4 and drill bit 6 as an organic wholely, after second cutting edge 5 damages, can unscrew assembly bolt 8 and change anti-deflection head 4.

After the anti-deflection head 4 is installed on the drill bit 6 by utilizing the assembly structure, when the drill bit body drills the machining surface of the inclined surface or the circular arc surface, firstly the second cutting edge 5 is contacted with the inclined surface or the circular arc surface, and as the second cutting edge 5 is vertically arranged with the bearing in the drill handle 2, the second cutting edge 5 can be prevented from being excessively subjected to single-sided radial force to cause deflection, so that the inclined surface or the circular arc surface can be cut into a plane mutually perpendicular to the drill bit body by utilizing the second cutting edge 5, the machining surface can be cut into a round hole by continuously moving down the second cutting edge 5, and then the first cutting edge 3 can be contacted with the round hole of the cutting of the second cutting edge 5, so that the round hole can be reamed, and the anti-skid and anti-deflection performance of the drill bit body can be improved.

Chip grooves 10 are formed in the surfaces of the drill body 1, the drill bit 6 and the anti-deflection head 4, and the chip grooves 10 can discharge scrap iron generated by chips of the first chip edge 3 and the second chip edge 5 into holes so as to prevent the scrap iron from blocking the holes.

It will be understood that the utility model has been described in terms of several embodiments, and that various changes and equivalents may be made to these features and embodiments by those skilled in the art without departing from the spirit and scope of the utility model. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the utility model without departing from the essential scope thereof. Therefore, it is intended that the utility model not be limited to the particular embodiment disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. An anti-slip and anti-migration drill bit, comprising:

The drill bit comprises a drill bit body, a drill handle (2) and a drill bit (6), wherein the surface of the drill bit (6) is symmetrically provided with two first cutting edges (3) for cutting;

The anti-offset structure comprises an anti-offset head (4), and four second cutting edges (5) for cutting are arranged on the left side face of the anti-offset head (4) in a circumferential array.

2. The anti-slip and anti-migration drill bit of claim 1, wherein: one end of the anti-deflection head (4) far away from the second cutting edge (5) is provided with an assembling structure which can be assembled with the drill bit (6) into a whole.

3. The anti-slip and anti-migration drill bit of claim 2, wherein: the assembly structure comprises a limiting block (7) fixedly arranged at the right end of the anti-deflection head (4), a limiting groove matched with the limiting block (7) is formed in the left end of the drill bit (6), and an assembly bolt (8) is connected with the surface of the drill bit (6) in a threaded mode.

4. A non-slip, non-offset drill bit according to claim 3, wherein: the threaded end of the assembly bolt (8) extends to the inside of the limit groove, the limit plate (9) is connected in a rotating mode, and the surface of the limit block (7) is provided with a limit groove matched with the limit plate (9).

5. The anti-slip and anti-migration drill bit of claim 1, wherein: the included angle between the first cutting edge (3) and the central axis of the drill handle (2) is 60 degrees, and the second cutting edge (5) is perpendicular to the bearing in the drill handle (2).

6. The anti-slip and anti-migration drill bit of claim 1, wherein: the materials of the anti-deflection head (4) and the second cutting edge (5) are both made of hard alloy materials.

7. The anti-slip and anti-migration drill bit of claim 1, wherein: chip grooves (10) are formed in the surfaces of the drill body (1), the drill bit (6) and the anti-deflection head (4).