CN218694214U

CN218694214U - Drill bit extension fixing device

Info

Publication number: CN218694214U
Application number: CN202223134795.4U
Authority: CN
Inventors: 丁俊虎
Original assignee: Jiangsu Tianqi Heavy Industry Co ltd
Current assignee: Jiangsu Tianqi Heavy Industry Co ltd
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-03-24
Anticipated expiration: 2032-11-23

Abstract

The utility model relates to a drill bit lengthening fixing device, which comprises an extension bar, a sleeve, a fixing part and a drill bit, wherein the sleeve is arranged inside one end of the extension bar, a mounting hole is arranged inside the sleeve, and the drill bit can be arranged in the mounting hole; the extension bar and the sleeve are respectively provided with a first screw hole and a second screw hole which can be matched with each other, and fixing pieces for fixing the drill bit are respectively arranged in the first screw hole and the second screw hole. The utility model adopts the design of arranging the extension bar on the drill bit, can meet the pore processing requirement of the deeper part of the workpiece, does not need to additionally customize the drill bit, has higher strength and rigidity, can meet the processing requirement, and can avoid the phenomenon that the drill bit is broken due to insufficient strength caused by overlong strength; the utility model discloses a design benefit, the installation of being convenient for is changed, and the practicality is high.

Description

Drill bit extension fixing device

Technical Field

The utility model relates to a drill bit fixing device especially relates to a drill bit extension fixing device.

Background

The mechanical processing is a conventional way for producing mechanical workpieces, in the processing process requirements of some mechanical workpieces, a hole with a smaller diameter needs to be drilled at a deeper groove or deep hole part, however, because the length of a part of drill bits with smaller diameters cannot meet the processing conditions, customization is needed, but the longer drill bits have insufficient strength and rigidity due to the smaller diameter, the safety coefficient of the drill bits is low, and the fracture phenomenon is easy to generate.

Disclosure of Invention

The utility model aims to overcome the not enough of existence among the prior art, solve the less drill bit of diameter and provide a drill bit extension fixing device in the face of the inconvenient problem of recess or deep hole position drilling.

In order to achieve the purpose, the following technical scheme is adopted:

the drill bit lengthening fixing device comprises a lengthening bar, a sleeve, a fixing piece and a drill bit, wherein the sleeve is arranged inside one end of the lengthening bar, a mounting hole is formed inside the sleeve, and the drill bit can be mounted in the mounting hole; the extension bar and the sleeve are respectively provided with a first screw hole and a second screw hole which correspond to each other, and fixing pieces for fixing the drill bit are respectively arranged in the first screw hole and the second screw hole.

Preferably, one end of the extension bar is provided with a fixing hole for installing the sleeve.

Preferably, one end of the sleeve is provided with a limit ring.

Preferably, an annular groove is formed in one end, matched with the limiting ring, of the extension bar.

Preferably, the extension bar and the sleeve are made of materials with high strength and rigidity.

Preferably, one end of the fixing part is provided with a fixing cone, and the other end of the fixing part is provided with a groove.

Preferably, two first screw holes are arranged in a staggered manner.

Compared with the prior art, the utility model, have following advantage:

the utility model adopts the design that the extension bar is arranged on the drill bit, the thin hole processing requirement of the deeper part of the workpiece can be met, the drill bit does not need to be additionally customized, the extension bar has higher strength and rigidity, the processing requirement can be met, and the phenomenon that the drill bit is broken due to insufficient strength caused by overlong can be avoided; the utility model discloses a design benefit, the installation of being convenient for is changed, and the practicality is high.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic view of the present invention.

In the figure: 1. lengthening a rod; 2. a sleeve; 3. a fixing member; 4. a drill bit; 5. mounting holes; 6. a first screw hole; 7. a second screw hole; 8. a fixing hole; 9. a limiting ring; 10. a fixed cone; 11. a groove; 12. an annular groove.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

As shown in fig. 1-2, a drill lengthening fixing device comprises a lengthening bar 1, a sleeve 2, a fixing piece 3 and a drill 4, wherein the sleeve 2 is arranged inside one end of the lengthening bar 1, a mounting hole 5 is formed inside the sleeve 2, and the drill 4 can be mounted in the mounting hole 5; one end of the extension bar 1 can be installed in a drilling tool, and the drill bit 4 is installed at the other end of the extension bar 1 by using the sleeve 2, so that the extension function of the drill bit is realized;

the extension bar 1 and the sleeve 2 are respectively provided with a first screw hole 6 and a second screw hole 7 which correspond to each other, and fixing pieces 3 for fixing the drill bit 4 are respectively arranged in the first screw hole 6 and the second screw hole 7; the fixing piece 3 is screwed in the first screw hole 6 and the second screw hole 7 which are communicated with each other, and the end part of the fixing piece 3 props against the drill bit 4 to fix the drill bit 4 in the mounting hole 5.

Furthermore, one end of the extension bar 1 is provided with a fixing hole 8 for installing the sleeve 2.

Further, one end of the sleeve 2 is provided with a limiting ring 9, and the limiting ring 9 prevents the sleeve 2 from being stuck and not taken out after entering the mounting hole 5.

Furthermore, an annular groove 12 is formed in one end, matched with the limiting ring 9, of the extension bar 1, and the annular groove 12 facilitates the sleeve 2 to be detached from the extension bar 1.

Furthermore, the extension bar 1 and the sleeve 2 are both made of materials with high strength and rigidity.

Further, one end of the fixing member 3 is provided with a fixing cone 10, and the fixing cone 10 is used for fixing the drill 4 and preventing the drill 4 from being displaced; the other end is provided with a groove 11, and the groove 11 is a hexagonal prism groove, so that the hexagonal wrench is convenient to install and disassemble.

Further, the first screw holes 6 are arranged in a staggered mode, and the first screw holes 6 and the second screw holes 7 which are arranged in a staggered mode enable the fixing piece 3 to be capable of fixing different positions of the drill bit 4, so that the fixing piece is firmer.

The working principle is as follows: use the utility model discloses the time, at first install sleeve 2 in the inside of fixed orifices 8, make the inboard of spacing ring 9 hug closely the tip of extension bar 1, make the coaxial center setting of first screw 6 and second screw 7 in the installation, later, insert mounting hole 5 with drill bit 4 inside, it is fixed with drill bit 4 to recycle mounting 3, insert on the drilling tool locking to the other end of extension bar 1 at last can.

It is to be understood that the above embodiments are merely exemplary embodiments that have been employed to illustrate the principles of the present invention, and that the present invention is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims

1. The utility model provides a drill bit extension fixing device, includes extension bar (1), sleeve (2), mounting (3) and drill bit (4), characterized by: a sleeve (2) is arranged inside one end of the extension bar (1), a mounting hole (5) is formed inside the sleeve (2), and the drill bit (4) can be mounted in the mounting hole (5); a first screw hole (6) and a second screw hole (7) which correspond to each other are formed in the extension bar (1) and the sleeve (2) respectively, and fixing pieces (3) used for fixing the drill bit (4) are arranged in the first screw hole (6) and the second screw hole (7) respectively.

2. The drill bit extension fixture of claim 1, further comprising: one end of the extension bar (1) is provided with a fixing hole (8) for installing the sleeve (2).

3. The drill bit extension fixture of claim 1, further comprising: one end of the sleeve (2) is provided with a limiting ring (9).

4. A drill extension fixture according to claim 3, wherein: an annular groove (12) is formed in one end, matched with the limiting ring (9), of the extension bar (1).

5. The drill bit extension fixture of claim 1, further comprising: both the extension bar (1) and the sleeve (2) are made of materials with high strength and rigidity.

6. The drill bit extension fixture of claim 1, further comprising: one end of the fixing piece (3) is provided with a fixing cone (10), and the other end of the fixing piece is provided with a groove (11).

7. The drill bit extension fixture of claim 1, further comprising: the two first screw holes (6) are arranged in a staggered mode.