Diamond drill bit with protection structure

Abstract

The utility model relates to the technical field of diamond products, and discloses a diamond drill bit with a protection structure, which comprises a drill bit steel body, a matrix and drill teeth, the drill bit steel body and the drill teeth are respectively fixed at two ends of the matrix, the drill teeth are annularly fixed on the upper end face of the matrix at equal intervals, and each drill tooth comprises a base, a first cutting block and a second cutting block. The longitudinal section of the first cutting block is triangular, the bottom edge of one side of the first cutting block is connected with the end edge of the first inclined plate on the base, the bottom edge of the other side of the first cutting block is connected with the second cutting block, the second cutting block comprises a cylinder and a cone, the cone and the cylinder share the same bottom, and the first cutting block and the second cutting block are arranged in a right-angle mode. The drill bit has the following advantages and effects that one drill bit has two functions, the use range of the drill bit is expanded, the use efficiency is improved, the first protection strip and the second protection strip are arranged, the drill bit is protected, friction between the drill bit and a drilled object is reduced, the outer diameter reduction speed of the drill bit is slowed down, the drilling speed is improved, and meanwhile the working efficiency is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of diamond, in particular to a diamond drill bit with a protection structure. Background Art

[0002] A drill bit with cutting edges is called a diamond drill bit. This drill bit is an integral drill bit, and there are no movable parts in the whole drill bit. It has a relatively simple structure, and has the capabilities of high strength, high wear resistance and impact resistance. It is one of the three major new drilling technologies in the world in the 1980s.

[0003] During the geological drilling process of the diamond drill bit, as the total drilling volume increases, the wear amount of the diamond drill bit also gradually increases, mainly reflected in the working surface of the end face of the drill bit and the inner and outer diameters of the bit matrix. As the drill bit is used, while the working surface of the drill bit decreases, the inner and outer diameters will also be worn. Therefore, it is necessary to protect the drill bit to prevent the phenomenon of sticking of the drill bit. Content of the Utility Model

[0004] The purpose of the utility model is to provide a diamond drill bit with a protection structure, which has the effects of protecting the drill bit and improving the working efficiency.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: It includes a drill bit steel body, a matrix and drill teeth. The characteristics are as follows: The drill bit steel body and the drill teeth are respectively fixed at both ends of the matrix. The drill teeth are fixed on the upper end face of the matrix at equal intervals in a ring shape. The drill teeth include a base, a first cutting block and a second cutting block. The longitudinal section of the first cutting block is triangular. One bottom edge of one side of the first cutting block is connected to the end edge of the inclined plate 1 on the base. The other bottom edge of the first cutting block is connected to the second cutting block. The second cutting block includes a cylinder and a cone. The cone and the cylinder have the same bottom. The first cutting block and the second cutting block are arranged at a right angle.

[0006] The further setting of the utility model is: A plurality of protection strips 1 are arranged on the outer side surface of the base.

[0007] The further setting of the utility model is: A wear-resistant layer 1 is arranged on the edge of the top of the first cutting block.

[0008] The further setting of the utility model is: Wear-resistant balls 1 are evenly arranged on the outer side surface of the cone.

[0009] The further setting of the utility model is: The number of the drill teeth is 3.

[0010] The further setting of the utility model is: A liquid inlet hole is arranged on the side surface of the base opposite to the second cutting block, and a liquid outlet hole is arranged at the top where the first cutting block and the second cutting block are connected.

[0011] A further setting of the present utility model is that: a second protective strip is further provided below the protective strip.

[0012] A further setting of the present utility model is that: the carcass is in the shape of a supporting frustum.

[0013] A further setting of the present utility model is that: the carcass and the drill bit rigid body are hollow.

[0014] A further setting of the present utility model is that: an external thread is provided on the circumferential surface of the bottom of the drill bit steel body away from the carcass.

[0015] The beneficial effects of the present utility model are:

[0016] 1. By providing the first cutting block, the drilling process of the drill bit can be realized. By providing the second cutting block, the cutting process of the drill bit can be realized. One drill bit has two functions, expanding the use range of the drill bit and improving the use efficiency.

[0017] 2. By providing the first protective strip and the second protective strip, the drill bit is protected, the friction between the drill bit and the object to be drilled is reduced, the reduction speed of the outer diameter of the drill bit is slowed down, and the drilling speed is increased while ensuring the working efficiency.

[0018] 3. By providing the first wear-resistant layer and the second wear-resistant layer, the wear is reduced and the service life is prolonged.

[0019] 4. By providing the liquid inlet hole and the liquid outlet hole, the drill bit can be cooled during work, the drill bit is protected, and the increase in wear of the drill bit due to too high temperature is avoided. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of the present utility model.

[0022] Figure 2 is Figure 1 A schematic structural diagram of another side.

[0023] In the figure, 1. Drill bit steel body; 2. Carcass; 3. Drill teeth; 31. Base; 32. First cutting block; 33. Second cutting block; 4. First inclined plate; 5. External thread; 6. First protective strip; 7. First wear-resistant layer; 8. First wear-resistant ball; 9. Liquid inlet hole; 10. Liquid outlet hole; 11. Second protective strip. Detailed Embodiments

[0024] The technical solution of the present utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0025] Embodiment, a diamond drill bit with a protection structure, as Figure 1-2 shown, includes a drill bit steel body 1, a matrix 2 and cutting teeth 3. The drill bit steel body 1 and the cutting teeth 3 are respectively fixed at both ends of the matrix 2. The cutting teeth 3 are fixedly arranged at equal intervals in a ring shape on the upper end surface of the matrix 2. The number of the cutting teeth 3 is 3. The cutting teeth 3 include a base 31, a first cutting block 32 and a second cutting block 33. The longitudinal section of the first cutting block 32 is triangular. One bottom side of the first cutting block 32 is connected to the end edge of the inclined plate 4 on the base 31. The other bottom side of the first cutting block 32 is connected to the second cutting block 33. The second cutting block 33 includes a cylinder and a cone, and the cone and the cylinder have the same bottom. The first cutting block 32 and the second cutting block 33 are arranged at a right angle. By setting the first cutting block 32, the drilling process of the drill bit can be realized. By setting the second cutting block 33, the cutting process of the drill bit can be realized. A drill bit has two functions, expanding the use range of the drill bit and improving the use efficiency.

[0026] Furthermore, a plurality of first protection strips 6 are arranged on the outer side surface of the base 31, and a second protection strip 11 is further arranged below the protection strip, protecting the drill bit, reducing the friction between the drill bit and the object to be drilled, slowing down the reduction speed of the outer diameter of the drill bit, and ensuring the working efficiency while increasing the drilling speed.

[0027] Furthermore, a first wear-resistant layer 7 is arranged on the top edge of the first cutting block 32, and first wear-resistant balls 8 are evenly arranged on the outer side surface of the cone, reducing wear and extending the service life.

[0028] Furthermore, a liquid inlet hole 9 is arranged on the side surface of the base 31 opposite to the second cutting block 33, and a liquid outlet hole 10 is arranged at the top where the first cutting block 32 and the second cutting block 33 are connected, which can cool the drill bit during work, protect the drill bit, and avoid increasing the wear of the drill bit due to too high temperature.

[0029] Furthermore, the matrix 2 is in the shape of a supporting frustum, and the matrix 2 and the drill bit steel body are hollow.

[0030] Furthermore, an external thread 5 is arranged on the circumferential surface of the bottom of the drill bit steel body 1 away from the matrix 2.

Claims

1. A diamond drill bit with a protective structure, comprising a drill bit steel body (1), a matrix (2) and drill teeth (3), characterized in that: The drill bit steel body (1) and the drill teeth (3) are respectively fixed to the two ends of the matrix (2); the drill teeth (3) are fixed to the upper end surface of the matrix (2) in an annular shape at equal intervals; the drill teeth (3) comprise a base (31), a first cutting block (32) and a second cutting block (33); the longitudinal section of the first cutting block (32) is triangular; the bottom edge of one side of the first cutting block (32) is connected to the end edge of the inclined plate (4) on the base (31); the bottom edge of the other side of the first cutting block (32) is connected to the second cutting block (33); the second cutting block (33) comprises a cylinder and a cone; the cone and the cylinder have the same bottom; the first cutting block (32) and the second cutting block (33) are arranged at right angles.

2. A diamond drill bit with a protective structure according to claim 1, characterized in that: The outer side surface of the base (31) is provided with a plurality of protective strips (6).

3. A diamond drill bit with a protective structure according to claim 2, characterized in that: A wear-resistant layer 1 (7) is provided along the top edge of the first cutting block (32).

4. A diamond drill bit with a protective structure according to claim 3, characterized in that: The outer side surface of the cone is evenly provided with wear-resistant balls (8).

5. A diamond drill bit with a protective structure according to claim 4, characterized in that: The number of the drill teeth (3) is 3.

6. A diamond drill bit with a protective structure according to claim 5, characterized in that: A liquid inlet hole (9) is provided on the side of the base (31) opposite to the second cutting block (33), and a liquid outlet hole (10) is provided on the top where the first cutting block (32) and the second cutting block (33) are connected.

7. A diamond drill bit with a protective structure according to claim 6, characterized in that: A second protection strip (11) is also provided below the protection strip.

8. The diamond drill bit with a protective structure according to claim 7, characterized in that: The carcass (2) is in the shape of a supporting truncated cone.

9. A diamond drill bit with a protective structure according to claim 8, characterized in that: The carcass (2) and the drill bit rigid body are hollow.

10. A diamond drill bit with a protective structure according to claim 9, characterized in that: The bottom circumferential surface of the drill bit steel body (1) away from the matrix (2) is provided with an external thread (5).

Images