CN219746433U

CN219746433U - Twist drill bit

Info

Publication number: CN219746433U
Application number: CN202320521547.0U
Authority: CN
Inventors: 吕英辉
Original assignee: Pafete Precision Tools Qingdao Co ltd
Current assignee: Pafete Precision Tools Qingdao Co ltd
Priority date: 2023-03-17
Filing date: 2023-03-17
Publication date: 2023-09-26
Anticipated expiration: 2033-03-17

Abstract

The utility model relates to the technical field of twist drills, in particular to a twist drill, which comprises a twist drill body, wherein a mounting head is arranged at the top of the twist drill body, an internal thread groove is formed in the bottom of the mounting head, a threaded rod is fixedly connected to the top of the twist drill body, the surface of the threaded rod is in threaded connection with the inner wall of the internal thread groove, a hose connector is fixedly connected to the surface of the top of the twist drill body, a liquid storage groove is formed in the twist drill body, and a liquid guide groove is formed in the liquid storage groove.

Description

Twist drill bit

Technical Field

The utility model relates to a twist drill, and belongs to the field of twist drills.

Background

Twist drills are tools for machining holes from solid materials, and are the most widely used tools for hole machining, and are tools for drilling round holes in workpieces by rotary cutting of the twist drills relative to a fixed axis, and are known as twist-like tools in which chip flutes are spiral.

The existing twist drill can discharge scraps at the spiral groove in the drilling process, but the drill bit efficiency is affected due to dry abrasion between the twist drill and a workpiece in the drilling process, and the process of externally adding the use liquid is complicated and easy to splash outside the drilling, so that a large amount of use liquid is wasted, and inconvenience is brought to the work of staff.

Disclosure of Invention

The utility model aims to provide a twist drill, two hose connectors are arranged to be respectively communicated with two kinds of use liquid, the two kinds of use liquid can be used at the same time, the use liquid can be discharged from the top through an inclined flow port, and the side surface or the top of the inner wall of a drill hole is cooled or lubricated, so that the high-strength operation of the twist drill body is facilitated, the service life of the twist drill is prolonged indirectly, and the problems in the background art are solved.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a twist drill, includes the twist drill body, the installation head has been placed at the top of twist drill body, the internal thread groove has been seted up to the bottom of installation head, the top fixedly connected with threaded rod of twist drill body, the surface of threaded rod and the inner wall threaded connection of internal thread groove, the fixed surface at twist drill body top has the hose connector, the reservoir has been seted up to the inside of twist drill body, the drain groove has been seted up to the inside of reservoir, the inner wall fixedly connected with screen cloth of reservoir, the inner wall fixedly connected with baffle of reservoir, the bottom of reservoir is connected with the apopore, the inner wall fixedly connected with duckbill valve of apopore.

Further, the top fixedly connected with of threaded rod is smooth decides the pole, smooth fixed slot has been seted up to the inner wall in internal thread groove, smooth fixed slot's inner wall and smooth fixed pole's surface sliding connection.

Further, a restraining groove is formed in the side face, close to the bottom, of the mounting head, a restraining annular plate is fixedly connected to the upper surface of the twist drill body, and the restraining annular plate is sleeved in the inner wall of the restraining groove.

Furthermore, the inside of restraint annular plate and the inside of restraint groove have all been seted up the positioning screw groove, the inner wall threaded connection in positioning screw groove has the positioning screw.

Furthermore, an inclined flow port is formed in the side face of the liquid storage tank, and an elastic filter screen is sleeved outside the inclined flow port.

Further, protruding whets are fixedly installed in the spiral groove on the twist drill body, the number of the protruding whets is at least eight, and the protruding whets with the number of at least eight are evenly distributed on the twist drill body.

The beneficial effects of the utility model are as follows:

according to the utility model, the threaded rod and the internal thread groove are arranged for connection and fixation of the mounting head and the twist drill body, the smooth fixing rod and the smooth fixing groove in the internal thread groove can play a role in positioning, the central axis of the mounting head and the central axis of the twist drill body are guaranteed to be positioned on the same horizontal line, the subsequent constraint annular plate can be sleeved in the constraint groove, after the two positioning screw grooves are aligned, the positioning screw is rotated to firmly mount the mounting head and the twist drill body from the side, before the twist drill body is used, a worker can firstly align with the hose interfaces, the two hose interfaces can be respectively connected with two kinds of using liquid, such as lubricant, cold water and the like, the partition plate in the liquid storage groove is used for separating space, the screen mesh is used for filtering impurities in the using liquid, the inclined flow port can discharge the using liquid from the top, the side surface or the top of the inner wall of a drilled hole is cooled or lubricated, the one-way discharge of the using liquid is guaranteed through the liquid discharge hole, and the arrangement of the duckbill valve is beneficial to the high-strength operation of the twist drill body, and the practicability is beneficial to popularization and use.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain the utility model.

FIG. 1 is a schematic view of the overall structure of a twist drill of the present utility model;

FIG. 2 is a front cross-sectional view of a twist drill of the present utility model;

FIG. 3 is an enlarged view of the twist drill of the present utility model at A;

FIG. 4 is an enlarged view of a twist drill of the present utility model at B;

reference numerals in the drawings: 1. a twist drill body; 2. a mounting head; 3. an internal thread groove; 4. a threaded rod; 5. a liquid storage tank; 6. a liquid guiding groove; 7. a screen; 8. a partition plate; 9. a liquid discharge hole; 10. a duckbill valve; 11. a smooth fixed rod; 12. smooth fixed groove; 13. a restraining groove; 14. restraining the annular plate; 15. positioning screw grooves; 16. positioning a screw; 17. a diagonal flow port; 18. an elastic filter screen; 19. and (5) protruding sharpening.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Embodiment 1 referring to fig. 1 to 4, the present utility model provides a technical solution:

the utility model provides a twist drill, including twist drill body 1, installation head 2 has been placed at the top of twist drill body 1, internal thread groove 3 has been seted up to the bottom of installation head 2, the top fixedly connected with threaded rod 4 of twist drill body 1, the surface and the inner wall threaded connection of internal thread groove 3 of threaded rod 4, the fixed surface at twist drill body 1 top has the hose interface, reservoir 5 has been seted up to the inside of twist drill body 1, reservoir 6 has been seted up to the inside of reservoir 5, reservoir 5's inner wall fixedly connected with screen cloth 7, reservoir 5's inner wall fixedly connected with baffle 8, reservoir 5's bottom is connected with apopore 9, apopore 9's inner wall fixedly connected with duckbill valve 10. The spiral groove on the twist drill body 1 is fixedly provided with protruding sharpening pieces 19, the number of the protruding sharpening pieces 19 is at least eight, and the protruding sharpening pieces 19 with the number of at least eight are uniformly distributed on the twist drill body 1.

Specifically, as shown in fig. 1-4, the top of the threaded rod 4 is fixedly connected with a smooth fixed rod 11, the inner wall of the internal thread groove 3 is provided with a smooth fixed groove 12, the inner wall of the smooth fixed groove 12 is in sliding connection with the surface of the smooth fixed rod 11, the smooth fixed rod 11 and the smooth fixed groove 12 in the internal thread groove 3 can play a role in positioning, and the central axis of the mounting head 2 and the central axis of the twist bit body 1 are ensured to be in the same horizontal line.

Specifically, as shown in fig. 1-4, a restraining groove 13 is formed in the side surface, close to the bottom, of the mounting head 2, and a restraining annular plate 14 is fixedly connected to the upper surface of the twist drill body 1, and the restraining annular plate 14 is sleeved in the inner wall of the restraining groove 13. The inside of restraint annular slab 14 and the inside of restraint groove 13 have all seted up the positioning screw groove 15, and the inner wall threaded connection of positioning screw groove 15 has positioning screw 16, and restraint annular slab 14 can cup joint in restraint groove 13, aligns two positioning screw grooves 15 after, rotates positioning screw 16 and adds firm installation head 2 and spiral bit body 1 from the side.

Embodiment 2 referring to fig. 1-4, the difference between the present embodiment and embodiment 1 is that: the inclined flow port 17 is formed in the side face of the liquid storage tank 5, the elastic filter screen 18 is sleeved outside the inclined flow port 17, and the inclined flow port 17 can discharge the used liquid from the top to cool or lubricate the side face or the top of the inner wall of the drill hole.

The working principle of the utility model is as follows: when the spiral drill bit is used, a worker can firstly utilize the threaded rod 4 and the internal thread groove 3 to fixedly connect the mounting head 2 and the spiral drill bit body 1, the smooth fixing rod 11 and the smooth fixing groove 12 in the internal thread groove 3 can play a role in positioning, the central axis of the mounting head 2 and the central axis of the spiral drill bit body 1 are guaranteed to be positioned in the same horizontal line, the follow-up constraint annular plate 14 can be sleeved in the constraint groove 13, after the two positioning screw grooves 15 are aligned, the positioning screw 16 is rotated to firmly fasten the mounting head 2 and the spiral drill bit body 1 from the side, before the spiral drill bit body 1 is used, the worker can firstly align with hose interfaces, the two hose interfaces can be respectively connected with two kinds of use liquids, such as lubricant, cold water and the like, the partition plate 8 in the liquid storage groove 5 can separate the space, the screen cloth 7 can filter impurities in the use liquids, the inclined flow port 17 can discharge the use liquids from the top, the side surface of the inner wall of a drilling hole or the top is cooled or lubricated, the spiral groove on the spiral drill bit body 1 is carried out through the liquid discharge hole 9, the setting of the duckbill valve 10 is guaranteed, the practical performance is high, the spiral drill bit body is facilitated, the practical performance is realized, and the practical performance is improved, and the convenience is brought to the use of the worker is improved.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A twist drill, comprising a twist drill body (1), characterized in that: the utility model discloses a spiral drill bit, including spiral drill bit body (1), installation head (2) have been placed at the top of spiral drill bit body (1), internal thread groove (3) have been seted up to the bottom of installation head (2), the top fixedly connected with threaded rod (4) of spiral drill bit body (1), the surface of threaded rod (4) and the inner wall threaded connection of internal thread groove (3), the fixedly connected with hose connection at spiral drill bit body (1) top, reservoir (5) have been seted up to the inside of spiral drill bit body (1), drain groove (6) have been seted up to the inside of reservoir (5), the inner wall fixedly connected with screen cloth (7) of reservoir (5), the inner wall fixedly connected with baffle (8) of reservoir (5), the bottom of reservoir (5) is connected with flowing back hole (9), the inner wall fixedly connected with duckbill valve (10) of flowing back hole (9).

2. A twist drill according to claim 1, wherein: the top fixedly connected with of threaded rod (4) is smooth decides pole (11), smooth fixed slot (12) have been seted up to the inner wall of internal thread groove (3), the inner wall in smooth fixed slot (12) and the surface sliding connection of smooth fixed pole (11).

3. A twist drill according to claim 1, wherein: the side face, close to the bottom, of the mounting head (2) is provided with a restraining groove (13), the upper surface of the twist drill body (1) is fixedly connected with a restraining annular plate (14), and the restraining annular plate (14) is sleeved in the inner wall of the restraining groove (13).

4. A twist drill according to claim 3, wherein: the inside of restraint annular plate (14) and the inside of restraint groove (13) have all seted up positioning screw groove (15), the inner wall threaded connection of positioning screw groove (15) has positioning screw (16).

5. A twist drill according to claim 1, wherein: an inclined flow port (17) is formed in the side face of the liquid storage tank (5), and an elastic filter screen (18) is sleeved outside the inclined flow port (17).

6. A twist drill according to claim 1, wherein: the spiral groove on the twist drill body (1) is fixedly provided with protruding sharpening pieces (19), the number of the protruding sharpening pieces (19) is at least eight, and the protruding sharpening pieces (19) with the number of at least eight are uniformly distributed on the twist drill body (1).