Bionic multi-groove diamond compact

Abstract

The utility model discloses a bionic multi-groove diamond compact belongs to superhard material technical field, including the hard alloy base body and the diamond layer covered on the top of hard alloy base body, be equipped with a plurality of wedge cutting surfaces on the diamond layer, be equipped with a plurality of cutting teeth on the wedge cutting surface, the cutting tooth and diamond layer side form a plurality of hatchet cutting edges. The utility model simulates biological surface claw shape structure, effectively disperses the stress in the cutting process, reduces local wear and tear and the probability of rupture, improves wear resistance and impact resistance. The design of claw shape cutting tooth increases the friction with the cutting material, reduces the contact area of cutting edge and rock mass and promotes the discharge of debris simultaneously, improves drilling efficiency and cutting quality.

Description

Technical Field

[0001] This utility model relates to the field of superhard materials technology, specifically to a biomimetic multi-groove diamond composite sheet. Background Technology

[0002] In major engineering fields such as oil drilling, geological exploration, and mining, drill bits are the core operating tools, and their performance directly determines drilling efficiency, construction costs, and equipment lifespan. Diamond composite discs (PDCs), as key cutting components of the drill bit, bear the core functions of breaking rock formations and guiding the drill bit forward. Traditional PDCs often employ planar or simple arc-shaped structures. These structures are prone to stress concentration during cutting, leading to increased localized wear and shortening drill bit lifespan. Furthermore, their impact resistance is insufficient, making them unsuitable for high-intensity operations under complex geological conditions. In addition, traditional structures have low chip removal efficiency; rock cuttings generated during cutting cannot be removed in a timely manner, which not only reduces cutting efficiency but may also cause drill bit jamming and other safety accidents, seriously affecting project progress and construction safety.

[0003] Therefore, it is of great significance to develop a new composite sheet structure that can optimize stress distribution and improve wear resistance and impact resistance. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a biomimetic multi-groove diamond composite sheet, which improves its overall performance through biomimetic structural design.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A biomimetic multi-groove diamond composite sheet includes a cemented carbide substrate and a diamond layer covering the cemented carbide substrate. The diamond layer has a plurality of wedge-shaped cutting surfaces, and the wedge-shaped cutting surfaces have a plurality of cutting teeth. The cutting teeth and the side surface of the diamond layer form a plurality of axe-shaped cutting edges.

[0006] The cemented carbide substrate has a cylindrical structure, and the cutting teeth are claw-shaped cutting teeth.

[0007] The wedge-shaped cutting surface is an arc surface or an inclined surface, and the horizontal angle between the wedge-shaped cutting surface and the horizontal plane is 3~45°.

[0008] The number of cutting teeth is 5, which are evenly or non-evenly distributed on the wedge-shaped cutting surface.

[0009] The wedge-shaped cutting surface and the cutting teeth form six chip removal grooves.

[0010] The height difference between the cutting tooth and the diamond layer is ±0.03 mm. Beneficial effects

[0011] This invention provides a biomimetic multi-groove diamond composite sheet, which has the following beneficial effects: This invention simulates the claw-like structure of a biological surface, effectively dispersing stress during the cutting process, reducing localized wear and the probability of breakage, and improving wear resistance and impact resistance. The claw-shaped cutting teeth design increases friction with the material being cut, reduces the contact area between the cutting edge and the rock mass, and promotes debris removal, thereby improving drilling efficiency and cutting quality. Attached Figure Description

[0012] Figure 1 This is a top view of the biomimetic multi-groove diamond composite sheet of this utility model; Figure 2 This is a partial cross-sectional view of a biomimetic multi-groove diamond composite sheet.

[0013] Reference numerals: 1-Diamond layer, 101-Wedge-shaped cutting surface, 102-Cutting tooth, 103-Cutting edge, 104-Chip groove, 2-Carbide substrate Detailed Implementation

[0014] 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.

[0015] like Figure 1 , Figure 2 As shown, this embodiment provides a biomimetic multi-groove diamond composite sheet, including a cemented carbide substrate 2 and a diamond layer 1 covering the cemented carbide substrate 2. The diamond layer 1 has three wedge-shaped cutting surfaces 101, and five cutting teeth 102 are uniformly or non-uniformly distributed on the wedge-shaped cutting surfaces 101. The cutting teeth 102 and the side surface of the diamond layer 1 form an axe-shaped cutting edge 103. The wedge-shaped cutting surfaces 101 and the cutting teeth 102 form six chip removal grooves 104. This increases the friction with the material being cut, reduces the contact area between the cutting edge and the rock mass, promotes chip removal, and improves drilling efficiency and cutting quality.

[0016] Among them, the wedge-shaped cutting surface 101 is an inclined surface, and the horizontal angle between the wedge-shaped cutting surface 101 and the horizontal plane is 15°.

[0017] The cemented carbide substrate 2 has a cylindrical structure, and the cutting teeth 102 are claw-shaped. The height difference between the cutting teeth 102 and the diamond layer 1 is 0 mm. This claw-shaped structure, mimicking the surface structure of a biological material, effectively disperses stress during the cutting process, reduces localized wear and the probability of breakage, and improves wear resistance and impact resistance. The wedge-shaped cutting surface (3~45° angle) of the arc or inclined plane can disperse stress concentration during drilling, while the geometry of the axe-shaped cutting edge can effectively offset multi-directional impact forces, reducing the risk of edge damage to the diamond layer. The cylindrical matrix combined with the staggered arrangement of claw-shaped cutting teeth enhances the interface bonding strength through mechanical interlocking effect, resisting circumferential impact forces. Multiple uniformly / non-uniformly distributed claw-shaped cutting teeth form multiple cutting points, which can simultaneously break the rock layer, reduce single-point wear, and increase the drilling speed. The height difference between the cutting teeth and the diamond layer is strictly controlled within ±0.03mm to ensure the flatness of the cutting surface and avoid local overload caused by uneven height.

[0018] Although embodiments of the present invention 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 to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A biomimetic multi-groove diamond composite sheet, comprising a cemented carbide substrate (2) and a diamond layer (1) covering the cemented carbide substrate (2), characterized in that: The diamond layer (1) has a plurality of wedge-shaped cutting surfaces (101), and the wedge-shaped cutting surfaces (101) have a plurality of cutting teeth (102), and the cutting teeth (102) and the side surface of the diamond layer (1) form a plurality of axe-shaped cutting edges (103).

2. The biomimetic multi-groove diamond composite sheet according to claim 1, characterized in that: The cemented carbide substrate (2) has a cylindrical structure, and the cutting teeth (102) are claw-shaped cutting teeth (102).

3. The biomimetic multi-groove diamond composite sheet according to claim 1, characterized in that: The wedge-shaped cutting surface (101) is an arc surface or a slope surface, and the horizontal angle between the wedge-shaped cutting surface (101) and the horizontal plane is 3~45°.

4. The biomimetic multi-groove diamond composite sheet according to claim 1, characterized in that: The number of cutting teeth is 5, which are evenly or non-evenly distributed on the wedge-shaped cutting surface.

5. The biomimetic multi-groove diamond composite sheet according to claim 1, characterized in that: The wedge-shaped cutting surface (101) and the cutting teeth (102) form six chip removal grooves (104).

6. The biomimetic multi-groove diamond composite sheet according to claim 1, characterized in that: The height difference between the cutting tooth (102) and the diamond layer (1) is ±0.03mm.

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