CN219818138U

CN219818138U - High-stability drill bit

Info

Publication number: CN219818138U
Application number: CN202321226991.6U
Authority: CN
Inventors: 叶加彪; 叶深森
Original assignee: Wenzhou Shensen Tools Co ltd
Current assignee: Wenzhou Shensen Tools Co ltd
Priority date: 2023-05-17
Filing date: 2023-05-17
Publication date: 2023-10-13
Anticipated expiration: 2033-05-17

Abstract

The utility model belongs to the technical field of drill bits, and particularly relates to a high-stability drill bit, which comprises: the twist drill comprises a drill bit and a drill rod, wherein the drill rod is provided with a jack; the shell comprises a clamping section and a fixing section, and a first threaded hole is formed in the fixing section; the fixing pin is arranged in the jack; the fixing screw is arranged in the first threaded hole; the fixing pin and the jack are cone-shaped, the jack is communicated with the screw thread, the fixing pin and the jack are in plug-in fit, and one end of the fixing screw abuts against the big head of the fixing pin; the utility model has the beneficial effects that the twist drill is installed and connected on the installation hole of the shell through the insertion and connection of the fixing pin and the insertion hole, and then the fixing pin can be clamped in the insertion hole of the drill rod by utilizing the threaded connection of the fixing screw on the fixing section of the shell, so that the fixing pin is not easy to separate from the insertion hole, thereby indirectly enhancing the connection firmness of the twist drill and the shell and enhancing the use stability of the twist drill.

Description

High-stability drill bit

Technical Field

The utility model belongs to the technical field of drill bits, and particularly relates to a high-stability drill bit.

Background

A drill bit is a cutting tool commonly used in drills or drilling machines to cut circular holes. The basic principle of the drill bit is that the drill bit is used for cutting edges, rotating a workpiece, and then removing drill cuttings through a drill groove. Common drill bits are mainly twist drills, flat drills, center drills, deep drills and trepanning drills.

In the prior art, most drills are installed in a shell of a drilling tool, then screws are connected to the shell, the screws extend into the end parts of the shell to abut against drill rods of the drills, radial pressure is applied to the drill rods to enable the drill rods to be fixedly installed in the shell, but when the drills are connected with the shell in a loosening mode, connection firmness of the drills and the shell is affected, and therefore working stability of the drills is affected.

Disclosure of Invention

The utility model aims at solving the technical problems, and provides a high-stability drill bit which achieves the effect of firm connection between a twist drill and a shell.

In view of this, the present utility model provides a high stability drill bit comprising:

the twist drill comprises a drill bit and a drill rod, wherein a jack is formed in the drill rod;

the shell comprises a clamping section and a fixing section, and a first threaded hole is formed in the fixing section;

the fixing pin is arranged in the jack;

the fixing screw is installed in the first threaded hole;

wherein, fixed pin and jack are the cone form, and jack and screw are linked together, and fixed pin and jack grafting adaptation, the big head of fixed pin is contradicted to set screw's one end

Further, the fixed section is also provided with a second threaded hole which is communicated with the jack of the drill rod and is positioned at one end with smaller jack aperture.

Further, the device also comprises a threaded plug which is arranged in the second threaded hole.

Further, the number of the jacks is a plurality of.

Further, the drill rod clamping device further comprises an adjusting slide block, a slide groove is formed in the clamping section, and the adjusting slide block is arranged on the drill rod and located in the slide groove.

Further, the adjusting slider includes:

the connecting part is provided with a thread structure;

a sliding part integrally connected to one end of the connecting part;

one end of the connecting part is connected with the drill rod in a threaded manner, and the other end of the connecting part is connected with the sliding part.

Further, the clamping device also comprises scale marks, wherein the scale marks are arranged on the outer wall of the clamping section with the sliding groove.

The beneficial effects of the utility model are as follows:

1. make fluted drill installation connect on the mounting hole of casing through the grafting cooperation of fixed pin and jack, then make the fixed pin can the joint in the jack of drilling rod on the fixed section of casing of reuse set screw threaded connection, make the fixed pin be difficult for breaking away from the jack to strengthen fluted drill and the firm in connection of casing indirectly, reinforcing fluted drill's stability in use.

2. The second screw hole is linked together with the jack of drilling rod, and is located the one end in the aperture of jack, utilizes the slender rod to exert thrust for the fixed pin from the second screw hole, promotes the fixed pin from the jack in and can make fluted drill and casing separate, improves the dismantlement convenience of fixed pin.

3. Through the jack and the fixed pin connection cooperation of different positions on the drilling rod for the twist drill is adjustable with the installation connection length of casing, thereby makes the twist drill can be applicable to the hole processing of different degree of depth, improves the practicality.

4. The sliding part of the control adjusting slide block drives the drill rod to move, so that the installation connection length of the twist drill and the shell can be adjusted, the design adjusting slide block enables the installation connection length adjustment of the twist drill and the shell to be more convenient, and the practicability is improved.

Drawings

FIG. 1 is a cross-sectional view of the overall structure of the present utility model;

FIG. 2 is a schematic view of the structure of the housing of the present utility model;

the label in the figure is:

1. a drill bit; 2. a drill rod; 21. a jack; 3. a clamping section; 31. a chute; 32. scale marks; 4. a fixed section; 41. a first threaded hole; 42. a second threaded hole; 5. a fixing pin; 6. a fixing screw; 7. a threaded plug; 8. an adjusting slide block; 81. a connection part; 82. a sliding part.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly described below with reference to the drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which are obtained by a person skilled in the art based on the embodiments of the present utility model, fall within the scope of protection of the present utility model.

In the description of the present utility model, it is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments in accordance with the present utility model. For ease of description, the dimensions of the various features shown in the drawings are not drawn to actual scale. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Example 1:

the present embodiment provides a high stability drill bit, comprising:

the twist drill comprises a drill bit 1 and a drill rod 2, wherein a jack 21 is arranged on the drill rod 2;

the shell comprises a clamping section 3 and a fixing section 4, wherein a first threaded hole 41 is formed in the fixing section 4;

a fixing pin 5, the fixing pin 5 being installed in the insertion hole 21;

a set screw 6, the set screw 6 being mounted in the first threaded hole 41;

wherein, fixed pin 5 and jack 21 are the cone form, and jack 21 and screw thread are linked together, and fixed pin 5 and jack 21 grafting adaptation, the big head of fixed pin 5 is contradicted to the one end of set screw 6.

In the technical scheme, a clamping section 3 of a shell is used for being installed on a driving motor, an axial installation hole is formed in the shell, a twist drill is installed in the installation hole of the shell, a first threaded hole 41 is formed in a fixing section 4 of the shell, a cone-shaped jack 21 is radially formed in a drill rod 2 of the twist drill, when the twist drill is installed in the installation hole of the shell, the jack 21 is communicated with the first threaded hole 41, a cone-shaped fixing pin 5 is installed in the jack 21, the fixing pin 5 is clamped in the jack 21 by utilizing structural adaptation of the fixing pin 5 and the jack 21, two ends of the fixing pin 5 are respectively exposed out of two ends of the jack 21, and the limiting effect on axial movement of the twist drill can be achieved; the fixing screw 6 is installed and connected on the first threaded hole 41 of the fixing section 4, the end part of the fixing screw 6 is abutted against one end of the big end of the fixing pin 5, pressure is applied to the fixing pin 5, the fixing pin 5 is tightly attached to the inner wall of the jack 21, the clamping connection between the fixing pin 5 and the drill rod 2 is firmer, and the fixing pin is not easy to fall off, the twist drill is installed and connected on the installation hole of the shell through the splicing fit of the fixing pin 5 and the jack 21, then the fixing screw 6 is used for being connected on the fixing section 4 of the shell in a threaded mode to enable the fixing pin 5 to be clamped in the jack 21 of the drill rod 2, the fixing pin 5 is not easy to separate from the jack 21, accordingly, the connection firmness of the twist drill and the shell is indirectly strengthened, and the stability in use of the twist drill is enhanced.

Example 2:

the present embodiment provides a high-stability drill bit having the following technical features in addition to the technical scheme including the above embodiment.

Further, the fixing section 4 is further provided with a second threaded hole 42, and the second threaded hole 42 is connected with the jack 21 of the drill rod 2 and is located at one end of the jack 21 with smaller aperture.

In this technical scheme, still be equipped with second screw hole 42 on casing fixed section 4, second screw hole 42 is linked together with the jack 21 of drilling rod 2, and be located the one end of the aperture of jack 21, when the twist drill need dismantle from the casing in, dismantle fixing screw 6 from fixed section 4, then utilize the thin pole to exert thrust for fixed pin 5 from second screw hole 42, release fixed pin 5 from jack 21 in can making twist drill and casing separate, this structural design makes the twist drill conveniently dismantle the separation, improve the practicality.

Example 3:

Further, a screw plug 7 is further included, and the screw plug 7 is installed in the second screw hole 42.

In this technical scheme, install and set up screw plug 7 in the second screw hole 42 of fixed section 4 of casing, can prevent through setting up screw plug 7 that the dust from piling up in second screw hole 42, play dustproof effect.

Example 4:

Further, the number of the jacks 21 is a plurality.

In this technical scheme, jack 21 on the drilling rod 2 is equipped with a plurality of, and is the setting of certain interval linear array, and this structural design is through the jack 21 with the different positions with fixed pin 5 connection cooperation for twist drill is adjustable with the installation connection length of casing, thereby makes the twist drill can be applicable to the hole processing of different degree of depth, improves the practicality effectively.

Example 5:

Further, the drill rod clamping device further comprises an adjusting slide block 8, a slide groove 31 is formed in the clamping section 3, and the adjusting slide block 8 is mounted on the drill rod 2 and located in the slide groove 31.

Further, the adjusting slider 8 includes:

a connecting part 81, wherein a thread structure is arranged on the connecting part 81;

a sliding portion 82 integrally connected to one end of the connecting portion 81;

one end of the connecting portion 81 is screwed to the drill rod 2, and the other end is connected to the sliding portion 82.

In this technical scheme, be equipped with regulation slider 8 on the drilling rod 2 of fluted drill, be equipped with spout 31 on the grip section 3 of casing, regulation slider 8 is located spout 31, the helicitic texture on the connecting portion 81 of regulation slider 8, be equipped with the connecting hole of taking the helicitic texture on drilling rod 2, the connecting portion 81 threaded connection of regulation slider 8 is in the connecting hole of drilling rod 2, sliding part 82 exposes outside the spout 31 of grip section 3, because fluted drill's drilling rod 2 locates in the mounting hole of casing, need hold drill bit 1 and adjust when adjusting fluted drill and the installation connection length of casing, this structural design drives drilling rod 2's removal through the sliding part 82 of control regulation slider 8, thereby can adjust fluted drill and the installation connection length of casing, improve the convenience of use.

Example 6:

Further, the scale marks 32 are arranged on the outer wall of the clamping section 3 with the sliding groove 31.

In this technical scheme, carved with scale mark 32 on the outer wall that the centre gripping end was equipped with spout 31, can control the sliding part 82 of adjusting slider 8 and remove certain distance with the help of scale mark 32 to realize the installation length of being connected of more accurate regulation fluted drill and casing, improve the practicality.

The embodiments of the present utility model have been described above with reference to the accompanying drawings, in which the embodiments of the present utility model and features of the embodiments may be combined with each other without conflict, the present utility model is not limited to the above-described embodiments, which are merely illustrative, not restrictive, of the present utility model, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present utility model and the scope of the claims, which are protected by the present utility model.

Claims

1. A high stability drill bit, comprising:

the twist drill comprises a drill bit (1) and a drill rod (2), wherein a jack (21) is arranged on the drill rod (2);

the shell comprises a clamping section (3) and a fixing section (4), wherein a first threaded hole (41) is formed in the fixing section (4);

a fixing pin (5), the fixing pin (5) being mounted in the insertion hole (21);

a set screw (6), the set screw (6) being mounted in the first threaded hole (41);

the fixing pin (5) and the inserting hole (21) are cone-shaped, the inserting hole (21) is communicated with threads, the fixing pin (5) is in plug-in fit with the inserting hole (21), and one end of the fixing screw (6) abuts against the big end of the fixing pin (5).

2. A high stability drill bit according to claim 1, characterized in that the fixed section (4) is further provided with a second threaded hole (42), the second threaded hole (42) being in communication with the socket (21) of the drill rod (2) and being located at the smaller bore end of the socket (21).

3. A high stability drill bit according to claim 2, further comprising a threaded plug (7), the threaded plug (7) being mounted in the second threaded bore (42).

4. A high stability drill bit according to claim 1, characterized in that the number of said receptacles (21) is several.

5. A high stability drill bit according to claim 1, further comprising an adjustment slide (8) provided with a slide groove (31) on the gripping section (3), said adjustment slide (8) being mounted on the drill rod (2) and being located in the slide groove (31).

6. A high stability drill bit according to claim 5, characterized in that the adjustment slide (8) comprises:

a connecting part (81), wherein a thread structure is arranged on the connecting part (81);

a sliding part (82), wherein the sliding part (82) is integrally connected to one end of the connecting part (81);

one end of the connecting part (81) is connected and installed on the drill rod (2) in a threaded mode, and the other end of the connecting part is connected with the sliding part (82).

7. A high stability drill bit according to claim 6, further comprising graduation marks (32), said graduation marks (32) being provided on the outer wall of the grip section (3) with the sliding groove (31).