A step composite coating wear-resistant drill bit

Abstract

The utility model relates to drill bit technical field discloses a wear -resisting drill bit of ladder type composite coating, drill bit body, and the inside of drill bit body is provided with cooling mechanism, cooling mechanism includes the thread groove of inside of drill bit body, and the inside of thread groove is fixedly installed with threaded rod through thread cooperation, and the inside of threaded rod is provided with water delivery groove, and the inside of drill bit body is provided with cooling groove, and the inside of drill bit body one end symmetry is provided with water spray groove, and drill bit body one end symmetry is provided with water spray hole, and water spray hole communicates with the inside of water spray groove, and water spray groove communicates with the inside of cooling groove, and the one end of threaded rod is fixed with hollow tube, the utility model discloses the structure of cooling mechanism, when drilling and processing, by hollow tube to the inside of cooling groove delivery cooling, and in the drilling and processing process by water spray hole place spouts, the cooling temperature of drilling and processing position is carried out, guarantees the drill bit to be in proper temperature range, reduces the wear and tear of drill bit.

Description

Technical Field

[0001] This utility model relates to the field of drill bit technology, specifically a wear-resistant drill bit with a stepped composite coating. Background Technology

[0002] A drill bit is a tool used for drilling. It has a sharp head and penetrates different types of materials, such as wood, metal and concrete, by rotating rapidly. Because drill bits experience significant wear during drilling, their surfaces are usually coated with a carbide coating to extend their service life.

[0003] A wear-resistant implantation drill bit with a titanium carbide coating, disclosed in announcement number CN218873859U, features a drill body as its main body. One end of the drill body has a cutter diameter drill ring mechanism, and the other end has a stop block. A threaded post is installed inside the stop block, and a push block is installed at one end of the threaded post. A limit plate is installed at one end of the push block. During use, the drill body, installation shank, and drill body connecting frame mechanism are detachably connected, allowing for easy replacement of individual parts and enhancing the drill bit's practicality. Furthermore, the outer surface of the drill bit is coated with titanium carbide, providing superior high-temperature resistance and wear resistance.

[0004] The wear-resistant planting drill bit with titanium carbide coating described above still has problems. When the drill bit is used for a long time, the temperature is high and it cannot be cooled down quickly. As the temperature increases, the wear of the drill bit also increases, thereby reducing the service life of the drill bit. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] Given that the existing technology has the problem that the drill bit temperature is high and wear is increased when used for a long time, thus reducing the service life of the drill bit.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A wear-resistant drill bit with a stepped composite coating, comprising:

[0009] The drill bit body has a cooling mechanism inside, an anti-backflow mechanism inside the cooling mechanism, and a connecting mechanism at one end of the cooling mechanism.

[0010] The cooling mechanism includes a threaded groove on the inner side of the drill bit body, a threaded rod fixedly installed on the inner side of the threaded groove by threaded engagement, a water delivery groove on the inner side of the threaded rod, a cooling groove on the inner side of the drill bit body, a water spray groove symmetrically opened at one end of the inner side of the drill bit body, a water spray hole symmetrically opened at one end of the drill bit body, the water spray hole communicating with the inner side of the water spray groove, the water spray groove communicating with the inner side of the cooling groove, and a hollow tube fixed at one end of the threaded rod.

[0011] As a further embodiment of this utility model: the anti-backflow mechanism includes a fixed seat fixed to one end of the inner side of the cooling tank, a sealing seat fixed to one side of the fixed seat on the inner side of the cooling tank, and a hard alloy coating fixed to one end of the drill bit body.

[0012] As a further improvement of this utility model: a rubber plug is fastened to one side of the sealing seat, and a spring is fixedly connected between the rubber plug and the fixing seat.

[0013] As a further embodiment of this utility model: a sealing groove is provided at one end of the inner side of the threaded groove, a sealing ring is fitted and fixed inside the sealing groove, and a base is fixed at one end of the hollow tube.

[0014] As a further improvement of this utility model: a rectangular groove is provided on the side of the base, and the sealing ring is tightly fitted to one end of the threaded rod.

[0015] As a further embodiment of this utility model: the connecting mechanism includes symmetrically opened limiting grooves on the circumferential surface of the hollow tube, and a fixed sleeve is rotatably fitted inside the limiting groove through a limiting block.

[0016] As a further embodiment of this utility model: the fixed sleeve is rotatably fitted with a housing, and the hollow tube has water inlet holes evenly distributed on its circumferential surface, with the water inlet holes located inside the housing.

[0017] As a further improvement of this utility model: a water inlet valve is fixed on the bottom circumferential surface of the housing, and the water inlet valve is connected to the inside of the housing.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This invention utilizes a cooling mechanism that delivers cooling material from a hollow tube to the inside of the cooling tank during drilling, and then sprays it out from the spray holes during the drilling process. This cools the drill bit's processing area, ensuring it remains within a suitable temperature range and reducing wear. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a wear-resistant drill bit with a stepped composite coating.

[0021] Figure 2 A top-view cross-sectional schematic diagram of a wear-resistant drill bit cooling mechanism with a stepped composite coating;

[0022] Figure 3 This is a rear cross-sectional schematic diagram of a stepped composite coating wear-resistant drill bit anti-backflow mechanism.

[0023] Figure 4 This is a rear cross-sectional view of a wear-resistant drill bit with a stepped composite coating.

[0024] Figure 5 This is a front sectional view of a wear-resistant drill bit connection mechanism with a stepped composite coating.

[0025] In the diagram: 1. Drill bit body; 101. Cooling mechanism; 102. Anti-backflow mechanism; 103. Connecting mechanism; 2. Cooling tank; 3. Threaded groove; 4. Threaded rod; 5. Water supply tank; 6. Hollow tube; 7. Water spray tank; 8. Water spray hole; 9. Hard alloy coating; 10. Fixing seat; 11. Spring; 12. Rubber plug; 13. Sealing seat; 14. Base; 141. Rectangular groove; 15. Sealing groove; 16. Sealing ring; 17. Limiting groove; 18. Limiting block; 19. Fixing sleeve; 20. Housing; 21. Water inlet valve; 22. Water inlet hole. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments. Example 1

[0029] Please see Figures 1-3 This is the first embodiment of the present invention.

[0030] This embodiment provides a wear-resistant drill bit with a stepped composite coating, comprising:

[0031] The drill bit body 1 has a cooling mechanism 101 inside the drill bit body 1, an anti-backflow mechanism 102 inside the cooling mechanism 101, and a connecting mechanism 103 at one end of the cooling mechanism 101.

[0032] The cooling mechanism 101 includes a threaded groove 3 on the inner side of the drill bit body 1. A threaded rod 4 is fixedly installed on the inner side of the threaded groove 3 by threaded engagement. A water delivery groove 5 is opened on the inner side of the threaded rod 4. A cooling groove 2 is opened on the inner side of the drill bit body 1. A water spray groove 7 is symmetrically opened at one end of the inner side of the drill bit body 1. A water spray hole 8 is symmetrically opened at one end of the drill bit body 1. The water spray hole 8 is connected to the inner side of the water spray groove 7. The water spray groove 7 is connected to the inner side of the cooling groove 2. A hollow tube 6 is fixed at one end of the threaded rod 4.

[0033] Specifically, the anti-backflow mechanism 102 includes a fixed seat 10 fixed to one end of the inner side of the cooling tank 2, a sealing seat 13 fixed to one side of the fixed seat 10 on the inner side of the cooling tank 2, a hard alloy coating 9 fixed to one end of the drill bit body 1, a rubber plug 12 fastened to one side of the sealing seat 13, and a spring 11 fixedly connected between the rubber plug 12 and the fixed seat 10.

[0034] Furthermore, by cooperating with the spring 11, the rubber stopper 12 can make the liquid flow unidirectionally inside the cooling tank 2, preventing the liquid from flowing back and bringing back the cutting chips, thus preventing blockage inside the cooling tank 2.

[0035] In use, the threaded rod 4 is installed inside the threaded groove 3, connecting the hollow tube 6 to the drill bit body 1. At this time, the cooling tank 2 is connected to the inner side of the water supply tank 5. During drilling, coolant is input through the hollow tube 6 and, with the cooperation of the water supply tank 5, is delivered to the inner side of the cooling tank 2. The coolant pushes the rubber plug 12, which stretches the spring 11, thereby delivering the coolant to the inner side of the spray tank 7 and spraying it out from the spray hole 8 at one end of the drill bit body 1. At this time, the coolant can cool the carbide coating 9 at one end of the drill bit body 1, thereby preventing it from increasing wear due to overheating.

[0036] In summary, through the structure of the cooling mechanism 101, during drilling, cooling is delivered from the hollow tube 6 to the inside of the cooling tank 2, and sprayed out from the spray hole 8 during the drilling process, thereby cooling the drilling position of the drill bit, ensuring that the drill bit is within a suitable temperature range, and reducing the wear of the drill bit. Example 2

[0037] Please see Figures 4-5 This is the second embodiment of the present utility model.

[0038] Specifically, a sealing groove 15 is provided at one end of the inner side of the threaded groove 3, and a sealing ring 16 is fixedly fitted inside the sealing groove 15. A base 14 is fixed at one end of the hollow tube 6, and a rectangular groove 141 is provided on the side of the base 14. The sealing ring 16 is tightly fitted to one end of the threaded rod 4.

[0039] Furthermore, the structure of the sealing groove 15 and the sealing ring 16 ensures a seal at the connection between the threaded rod 4 and the threaded groove 3, preventing coolant leakage.

[0040] Specifically, the connecting mechanism 103 includes symmetrically arranged limiting grooves 17 on the circumferential surface of the hollow tube 6. A fixed sleeve 19 is rotatably fitted inside the limiting groove 17 through a limiting block 18. A housing 20 is rotatably fitted on the fixed sleeve 19. Water inlet holes 22 are evenly arranged on the circumferential surface of the hollow tube 6, and the water inlet holes 22 are located inside the housing 20. A water inlet valve 21 is fixed on the bottom circumferential surface of the housing 20, and the water inlet valve 21 communicates with the inside of the housing 20.

[0041] Furthermore, through the structure of the fixed sleeve 19 and the housing 20, coolant is delivered to the inside of the hollow tube 6 without affecting the rotation of the drill bit, making it easier to use.

[0042] In use, the threaded rod 4 is rotated and installed inside the threaded groove 3, so that it fits tightly with the sealing ring 16. With the cooperation of the base 14 and the rectangular groove 141, the drill bit is connected to the drilling machine. At this time, the water inlet valve 21 is connected to the water supply pipe and the water inlet valve 21 is opened. The drilling machine drives the drill body 1 to rotate. At this time, with the cooperation of the fixed sleeve 19, the housing 20 is rotatably connected to the hollow tube 6. The housing 20 does not rotate with the hollow tube 6. Coolant is delivered to the inside of the housing 20 through the water supply pipe, and it is delivered to the inside of the hollow tube 6 through the water inlet hole 22. This delivers coolant to the processing position at one end of the drill body 1, cools the processing position, reduces the wear of the drill bit, and improves the processing quality of the workpiece.

[0043] In summary, the structure of the connecting mechanism 103 ensures the cooling effect by supplying coolant to the inside of the drill bit without affecting the rotation of the drill bit, making the drill bit more flexible and convenient to use.

[0044] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0045] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0046] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0047] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A wear-resistant drill bit with a stepped composite coating, comprising: The drill bit body (1) is characterized in that: a cooling mechanism (101) is provided on the inner side of the drill bit body (1), an anti-backflow mechanism (102) is provided on the inner side of the cooling mechanism (101), and a connecting mechanism (103) is provided at one end of the cooling mechanism (101). The cooling mechanism (101) includes a threaded groove (3) on the inner side of the drill bit body (1), a threaded rod (4) is fixedly installed on the inner side of the threaded groove (3) by threaded engagement, a water delivery groove (5) is provided on the inner side of the threaded rod (4), a cooling groove (2) is provided on the inner side of the drill bit body (1), a water spray groove (7) is symmetrically provided on one end of the inner side of the drill bit body (1), a water spray hole (8) is symmetrically provided on one end of the drill bit body (1), the water spray hole (8) is connected to the inner side of the water spray groove (7), the water spray groove (7) is connected to the inner side of the cooling groove (2), and a hollow tube (6) is fixed on one end of the threaded rod (4).

2. The wear-resistant drill bit with a stepped composite coating according to claim 1, characterized in that: The anti-backflow mechanism (102) includes a fixed seat (10) fixed to one end of the inner side of the cooling tank (2), a sealing seat (13) fixed to one side of the fixed seat (10) on the inner side of the cooling tank (2), and a hard alloy coating (9) fixed to one end of the drill bit body (1).

3. The wear-resistant drill bit with a stepped composite coating according to claim 2, characterized in that: A rubber plug (12) is fastened to one side of the sealing seat (13), and a spring (11) is fixedly connected between the rubber plug (12) and the fixing seat (10).

4. The wear-resistant drill bit with a stepped composite coating according to claim 1, characterized in that: A sealing groove (15) is provided at one end of the inner side of the threaded groove (3), and a sealing ring (16) is fixedly fitted inside the sealing groove (15). A base (14) is fixed at one end of the hollow tube (6).

5. The wear-resistant drill bit with a stepped composite coating according to claim 4, characterized in that: The base (14) has a rectangular groove (141) on its side, and the sealing ring (16) is tightly fitted to one end of the threaded rod (4).

6. The wear-resistant drill bit with a stepped composite coating according to claim 1, characterized in that: The connecting mechanism (103) includes a limiting groove (17) symmetrically opened on the circumferential surface of the hollow tube (6), and a fixed sleeve (19) is rotatably fitted inside the limiting groove (17) through a limiting block (18).

7. The wear-resistant drill bit with a stepped composite coating according to claim 6, characterized in that: The fixed sleeve (19) is rotatably fitted with a housing (20), and the hollow tube (6) has water inlet holes (22) evenly opened on its circumferential surface, and the water inlet holes (22) are located inside the housing (20).

8. The wear-resistant drill bit with a stepped composite coating according to claim 7, characterized in that: A water inlet valve (21) is fixed on the bottom circumferential surface of the housing (20), and the water inlet valve (21) is connected to the inside of the housing (20).

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