A nickel-based multilayer brazed diamond bit

Abstract

The utility model relates to brazing diamond drill bit technical field provides a nickel base multilayer brazing diamond drill bit, including the drill handle and drill bit body, the one end of drill handle is fixed with drill bit body, the outside of drill bit body is provided with the reinforcing structure, the inside of drill handle one end is provided with the positioning structure, the outside of drill handle is provided with the protection structure. The utility model discloses through being provided with the protection structure, will the fixed disc cover the outside of drill handle, moves the protection shell through the recess, under the action of the clamping block and the clamping groove, makes the protection shell and fixed disc fixed or disassembled each other, under the action of protection shell, when not using, reduce the damage of external impurity to drill bit body, under the action of rubber pad, prevent the collision of drill bit body and protection shell, have realized the dustproof function of the device, thereby improved the applicability of this nickel base multilayer brazing diamond drill bit when using.

Description

Technical Field

[0001] This utility model relates to the field of brazed diamond drill bit technology, and in particular to a nickel-based multilayer brazed diamond drill bit. Background Technology

[0002] Nickel-based multilayer brazed diamond drill bits are a type of drill bit that combines diamond particles with a metal matrix through a nickel-based brazing process, effectively solving the problem of particle detachment caused by traditional mechanical clamping. Therefore, a nickel-based multilayer brazed diamond drill bit is used.

[0003] To address this, patent CN212707436U discloses a uniformly oriented brazed diamond drill bit, comprising: a tube body, one end of which is provided with a diamond abrasive layer, and the other end of which is provided with a connector. The end of the tube body with the diamond abrasive layer has two symmetrical end notches along the sidewall direction of the tube body. The diamond abrasive layer includes an end face diamond abrasive layer and a side face diamond abrasive layer. A plurality of diamond abrasive grain placement points on the end face diamond abrasive layer and the side face diamond abrasive layer are arranged at equal intervals and staggered on the surface of the tube body, and each diamond abrasive grain placement point contains diamond abrasive grains. Compared with drill bits manufactured by traditional methods, the uniformly oriented brazed diamond drill bit has significant advantages in drilling performance and high dimensional accuracy. It can be widely used in efficient and precise drilling in the field of new materials and shows good application potential.

[0004] While the uniformly oriented brazed diamond drill bits mentioned above can be widely used in high-efficiency and precision drilling in the field of new materials and have shown good application potential, their applicability is low due to insufficient protective measures and the inconvenience of dust prevention when not in use. Utility Model Content

[0005] The purpose of this invention is to provide a nickel-based multilayer brazed diamond drill bit to address the shortcomings of existing nickel-based multilayer brazed diamond drill bits in terms of insufficient protective measures.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a nickel-based multilayer brazed diamond drill bit, comprising a drill shank and a drill bit body;

[0007] One end of the drill shank is fixed to the drill bit body, and a reinforcing structure is provided on the outer side of the drill bit body;

[0008] A positioning structure is provided inside one end of the drill shank;

[0009] The drill shank is provided with a protective structure on its outer side. The protective structure includes a fixing plate sleeved on the outside of the drill shank. A protective shell is provided on one side of the fixing plate. Both ends of one side of the fixing plate are provided with snap-fit ​​grooves. Each snap-fit ​​groove is provided with a snap-fit ​​block inside. Each snap-fit ​​block is provided with a reserved groove inside.

[0010] When using this device, the protective structure facilitates dust prevention, thereby improving the applicability of the nickel-based multilayer brazed diamond drill bit; the positioning structure facilitates assembly, thus improving the ease of use; and the reinforcing structure enhances the strength of the drill bit body, thereby extending its service life.

[0011] Preferably, the positioning structure includes a keyway, a slide groove, and a positioning groove. The slide groove is formed inside one end of the drill shank, and the positioning groove is formed inside the drill shank at one end of the slide groove. A keyway is formed inside the drill shank on the other side of the slide groove. The keyway transmits torque, prevents relative rotation between the drill bit body and the drill string, and ensures efficient and lossless power transmission.

[0012] Preferably, the centerline of the positioning groove is collinear with the centerline of the drill shank. The positioning groove ensures that the centerline of the drill shank is collinear with the centerline of the drill bit, guaranteeing accurate positioning of the drill shank and drill bit and preventing the drill bit body from shaking during operation.

[0013] Preferably, a groove is provided on the outer side of one end of the protective shell, and a rubber pad is fixed to one side of the inside of the protective shell. The fixing plate is placed on the outside of the drill shank, and the protective shell is moved through the groove. Under the action of the locking block and the locking groove, the protective shell and the fixing plate are fixed or disassembled to each other.

[0014] Preferably, the snap-fit ​​block and the fixing disc form an engaging structure through snap-fit ​​grooves, with one end of the snap-fit ​​block extending to the outside of the fixing disc and fixedly connected to one side of the protective shell. Under the protection of the protective shell, damage to the drill bit body from external impurities is reduced when not in use, and the rubber pad prevents collisions between the drill bit body and the protective shell.

[0015] Preferably, the reinforcing structure includes a nickel-based brazing filler metal, diamond abrasive grains, a high-temperature resistant coating, and a wear-resistant coating. The nickel-based brazing filler metal is disposed on the outer side of the drill bit body, the diamond abrasive grains are disposed on the outer side of the nickel-based brazing filler metal, the high-temperature resistant coating is disposed on the outer side of the diamond abrasive grains, and the wear-resistant coating is disposed on the outer side of the high-temperature resistant coating. Under the action of the nickel-based brazing filler metal, a strong metallurgical bond is formed between the diamond abrasive grains and the drill bit body, ensuring that the diamond abrasive grains will not easily fall off during cutting, providing reliable support for the diamond abrasive grains, and ensuring the continuous operation of the cutting work.

[0016] Preferably, the wear-resistant coating is actually a tungsten carbide coating, and one end of the wear-resistant coating contacts the protective shell through a rubber pad. The high-temperature resistant coating has excellent high-temperature resistance, which can resist the damage of high temperatures to the internal nickel-based brazing filler metal and diamond abrasive grains, ensuring that the drill bit body can still function normally in high-temperature environments. Since the wear-resistant coating is actually a tungsten carbide coating, it can significantly enhance the wear resistance of the drill bit body, effectively resist the wear of rocks on the drill bit body, reduce the wear of the drill bit body, and extend its service life.

[0017] The advantages of the nickel-based multilayer brazed diamond drill bit provided by this utility model are as follows:

[0018] By incorporating a protective structure, the fixed disc is fitted onto the outside of the drill shank. The protective shell moves through a groove, and the locking block and locking groove allow the protective shell and fixed disc to be fixed or disassembled. Under the protection of the protective shell, damage to the drill bit body from external impurities is reduced when not in use. The rubber pad prevents the drill bit body from colliding with the protective shell, thus achieving the dustproof function of the device and improving the applicability of the nickel-based multilayer brazed diamond drill bit in use.

[0019] By incorporating a positioning structure, torque can be transmitted through the keyway, preventing relative rotation between the drill bit body and the drill string, ensuring efficient and lossless power transmission. The positioning groove ensures that the centerline of the drill shank is collinear with the centerline of the drill string, guaranteeing precise positioning of the drill shank and the drill string, preventing the drill bit body from shaking during operation, and enabling the device to be easily assembled, thereby improving the convenience of using the nickel-based multilayer brazed diamond drill bit.

[0020] By incorporating a reinforced structure, the nickel-based brazing filler metal enables the diamond abrasive grains to form a strong metallurgical bond with the drill bit body, ensuring that the diamond abrasive grains do not easily detach during cutting. This provides reliable support for the diamond abrasive grains, guaranteeing continuous cutting operations. The high-temperature resistant coating provides excellent high-temperature resistance, protecting the internal nickel-based brazing filler metal and diamond abrasive grains from damage caused by high temperatures, ensuring the drill bit body can still function normally in high-temperature environments. The wear-resistant coating, actually a tungsten carbide coating, significantly enhances the wear resistance of the drill bit body, effectively resisting rock abrasion, reducing drill bit wear, and extending its service life. This device facilitates the improvement of the drill bit body's strength, thereby extending the service life of the nickel-based multilayer brazed diamond drill bit. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2This is a three-dimensional structural schematic diagram of the main cross-section of this utility model;

[0023] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0024] Figure 4 This is a top-view cross-sectional three-dimensional structural schematic diagram of the present invention;

[0025] Figure 5 This is an exploded three-dimensional structural diagram of the positioning structure of this utility model.

[0026] The reference numerals in the figure are as follows: 1. Drill shank; 2. Positioning structure; 201. Keyway; 202. Slide groove; 203. Positioning groove; 3. Protective structure; 301. Fixing disc; 302. Protective shell; 303. Snap-fit ​​groove; 304. Snap-fit ​​block; 305. Reserved groove; 4. Drill bit body; 5. Reinforcing structure; 501. Nickel-based brazing filler metal; 502. Diamond abrasive grains; 503. High-temperature resistant coating; 504. Wear-resistant coating. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-5 This utility model provides a nickel-based multilayer brazed diamond drill bit, including a drill shank 1 and a drill bit body 4. One end of the drill shank 1 is fixed to the drill bit body 4. A reinforcing structure 5 is provided on the outer side of the drill bit body 4. The reinforcing structure 5 includes a nickel-based brazing filler metal 501, diamond abrasive grains 502, a high-temperature resistant coating 503, and a wear-resistant coating 504. The nickel-based brazing filler metal 501 is provided on the outer side of the drill bit body 4. The diamond abrasive grains 502 are provided on the outer side of the nickel-based brazing filler metal 501. The high-temperature resistant coating 503 is provided on the outer side of the diamond abrasive grains 502. The wear-resistant coating 504 is provided on the outer side of the high-temperature resistant coating 503. The wear-resistant coating 504 is actually a tungsten carbide coating. One end of the wear-resistant coating 504 is in contact with the protective shell 302 through a rubber pad.

[0029] Reference Figure 2 and Figure 4As shown, under the action of the nickel-based brazing filler metal 501, the diamond abrasive grains 502 can form a strong metallurgical bond with the drill bit body 4, ensuring that the diamond abrasive grains 502 will not easily fall off during the cutting process, providing reliable support for the diamond abrasive grains 502, and ensuring the continuous operation of the cutting work. The high-temperature resistant coating 503 has good high-temperature resistance, which can resist the damage of high temperature to the internal nickel-based brazing filler metal 501 and diamond abrasive grains 502, ensuring that the drill bit body 4 can still work normally in high-temperature environments. The wear-resistant coating 504 is actually a tungsten carbide coating, which can significantly enhance the wear resistance of the drill bit body 4, effectively resist the wear of rocks on the drill bit body 4, reduce the wear of the drill bit body 4, and extend its service life.

[0030] A positioning structure 2 is provided inside one end of the drill shank 1. The positioning structure 2 includes a keyway 201, a sliding groove 202 and a positioning groove 203. The sliding groove 202 is opened inside one end of the drill shank 1. The positioning groove 203 is opened inside the drill shank 1 at one end of the sliding groove 202. The keyway 201 is opened inside the drill shank 1 on one side of the sliding groove 202. The centerline of the positioning groove 203 is collinear with the centerline of the drill shank 1.

[0031] Reference Figure 2 and Figure 4 As shown, the keyway 201 can transmit torque and prevent relative rotation between the drill bit body 4 and the drill bit, ensuring efficient and lossless power transmission. The positioning groove 203 makes the centerline of the drill shank 1 collinear with the centerline of the drill bit, ensuring accurate positioning of the drill shank 1 and the drill bit, and preventing the drill bit body 4 from shaking during operation.

[0032] A protective structure 3 is provided on the outside of the drill shank 1. The protective structure 3 includes a fixing plate 301 sleeved on the outside of the drill shank 1. A protective shell 302 is provided on one side of the fixing plate 301. Both ends of one side of the fixing plate 301 are provided with snap-fit ​​grooves 303. A snap-fit ​​block 304 is provided inside the snap-fit ​​groove 303. A reserved groove 305 is provided inside the snap-fit ​​block 304. A groove is provided on the outside of one end of the protective shell 302. A rubber pad is fixed on one side inside the protective shell 302. The snap-fit ​​block 304 and the fixing plate 301 form a snap-fit ​​structure through the snap-fit ​​groove 303. One end of the snap-fit ​​block 304 extends to the outside of the fixing plate 301 and is fixedly connected to one side of the protective shell 302.

[0033] Reference Figure 2 and Figure 3As shown, the fixing plate 301 is placed on the outside of the drill shank 1. The protective shell 302 is moved through the groove so that one end of the locking block 304 abuts against one end of the locking groove 303. The protective shell 302 is pushed, and under the action of the reserved groove 305, the locking block 304 is moved into the inside of the locking groove 303, thereby fixing the protective shell 302 and the fixing plate 301 to each other. Under the action of the protective shell 302, when not in use, the damage of external impurities to the drill bit body 4 is reduced. Under the action of the rubber pad, the drill bit body 4 is prevented from colliding with the protective shell 302.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A nickel-based multilayer brazed diamond drill bit, comprising a drill shank (1) and a drill bit body (4); Its features are: One end of the drill shank (1) is fixed with a drill bit body (4), and a reinforcing structure (5) is provided on the outside of the drill bit body (4); The drill shank (1) has a positioning structure (2) inside one end; The drill shank (1) is provided with a protective structure (3) on its outer side. The protective structure (3) includes a fixing plate (301) sleeved on the outside of the drill shank (1). A protective shell (302) is provided on one side of the fixing plate (301). Both ends of one side of the fixing plate (301) are provided with snap-fit ​​grooves (303). A snap-fit ​​block (304) is provided inside the snap-fit ​​groove (303). A reserved groove (305) is provided inside the snap-fit ​​block (304).

2. The nickel-based multilayer brazed diamond drill bit according to claim 1, characterized in that: The positioning structure (2) includes a keyway (201), a slide groove (202) and a positioning groove (203). The slide groove (202) is opened inside one end of the drill shank (1). The positioning groove (203) is opened inside the drill shank (1) at one end of the slide groove (202). The keyway (201) is opened inside the drill shank (1) on the other side of the slide groove (202).

3. The nickel-based multilayer brazed diamond drill bit according to claim 2, characterized in that: The centerline of the positioning groove (203) is collinear with the centerline of the drill shank (1).

4. The nickel-based multilayer brazed diamond drill bit according to claim 1, characterized in that: A groove is provided on the outer side of one end of the protective shell (302), and a rubber pad is fixed on one side inside the protective shell (302).

5. The nickel-based multilayer brazed diamond drill bit according to claim 1, characterized in that: The snap-fit ​​block (304) and the fixing plate (301) form a snap-fit ​​structure through the snap-fit ​​groove (303). One end of the snap-fit ​​block (304) extends to the outside of the fixing plate (301) and is fixedly connected to one side of the protective shell (302).

6. The nickel-based multilayer brazed diamond drill bit according to claim 1, characterized in that: The reinforcing structure (5) includes a nickel-based brazing filler metal (501), diamond abrasive grains (502), a high-temperature resistant coating (503), and a wear-resistant coating (504). The nickel-based brazing filler metal (501) is disposed on the outside of the drill bit body (4). Diamond abrasive grains (502) are disposed on the outside of the nickel-based brazing filler metal (501). A high-temperature resistant coating (503) is disposed on the outside of the diamond abrasive grains (502). A wear-resistant coating (504) is disposed on the outside of the high-temperature resistant coating (503).

7. A nickel-based multilayer brazed diamond drill bit according to claim 6, characterized in that: The wear-resistant coating (504) is actually a tungsten carbide coating, and one end of the wear-resistant coating (504) is in contact with the protective shell (302) through a rubber pad.

Images