A high-efficiency diamond compact for coring bits

Abstract

The utility model belongs to the field of coring drill bit, concretely relates to a kind of high-efficiency rhombus composite sheet for coring drill bit, including coring drill bit main body, several composite sheet mounting seats are fixedly installed in coring drill bit main body upper side, the one side of composite sheet mounting seat is provided with composite sheet base layer, and composite sheet base layer is fixedly connected with composite sheet surface layer on the side away from composite sheet mounting seat;Wherein, the center position of the side away from composite sheet base layer of composite sheet surface layer is provided with several composite sheet cutting edges one, and the one end of the center position of the side away from composite sheet surface layer of composite sheet cutting edge one is provided with two composite sheet cutting edges two. Through multistage, multiple-point cutting structure, reduce the contact area of cutting edge and rock, improve the rock breaking efficiency and drilling speed, increase the service life of composite sheet, and through multiple rhombic grooves, so that the cutting debris can be removed along the rhombic groove, prevent the inadmissible discharge of rock debris, leading to repeated cutting and drill bit mud bag phenomenon, to affect the overall drilling efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of core drill bits, specifically relating to a high-efficiency rhomboid composite sheet for core drill bits. Background Technology

[0002] Core drilling bits are widely used in geological exploration, mining, and other fields. Core drilling bit composites are superhard materials made by combining synthetic diamond micropowder with a cemented carbide matrix under ultra-high temperature and high pressure conditions. Its core cutting unit consists of a diamond polycrystalline layer and a tungsten carbide bottom layer, combining the high hardness and wear resistance of diamond with the impact resistance of cemented carbide. After precision machining, the composite is widely used as a cutting element in drill bits, cutting tools, and other fields, which can effectively improve tool life and processing efficiency. Especially in hard rock drilling scenarios such as geological drilling and oil extraction, its cutting performance is significantly better than that of traditional material core drilling bits. As a key component, the performance of the composite is directly related to the core drilling efficiency and quality.

[0003] However, currently, existing composite core drill bits have structural design flaws, such as an unreasonable distribution and shape of the cutting edges, resulting in low cutting efficiency. Furthermore, the large contact area between a single cutting edge and the rock leads to high drilling resistance, high drilling pressure, and high energy consumption. In highly abrasive or hard formations, the smooth cutting edge is prone to chipping or complete breakage due to stress concentration, resulting in a short service life. Finally, its rock breaking efficiency is low, and the rock cuttings are not easily discharged, which can easily lead to repeated cutting and drill bit mud accumulation, affecting the overall drilling efficiency and increasing the progress and cost of core drilling operations. Utility Model Content

[0004] The purpose of this invention is to provide a high-efficiency rhomboid composite blade for core drilling bits. Through a multi-stage, multi-point cutting structure, it reduces the contact area between the cutting edge and the rock, improves rock breaking efficiency and drilling speed, increases the service life of the composite blade, and through multiple rhomboid grooves, allows the cut debris to be discharged along the grooves, preventing poor rock cutting that could lead to repeated cutting and drill bit mud buildup, thus affecting the overall drilling efficiency.

[0005] The specific technical solution adopted by this utility model is as follows:

[0006] A high-efficiency rhombic composite sheet for coring drill bits includes a coring drill bit body, a plurality of composite sheet mounting seats are fixedly installed on the top of the coring drill bit body, a composite sheet base layer is provided on one side of the composite sheet mounting seat, and a composite sheet surface layer is fixedly connected to the side of the composite sheet base layer away from the composite sheet mounting seat.

[0007] Among them, a plurality of composite sheet cutting edges one are provided at the center position on the side of the composite sheet surface layer away from the composite sheet base layer, and two composite sheet cutting edges two are provided at the end of the composite sheet cutting edges one away from the center position of the composite sheet surface layer.

[0008] In one preferred embodiment of the present invention, the composite sheet mounting base has slots at both ends on the side near the composite sheet base, and the composite sheet base has blocks fixedly connected at both ends on the side near the composite sheet mounting base, and the blocks are adapted to the slots.

[0009] The matching of the clips and slots ensures that the position and angle of each composite sheet on the composite sheet mounting base are accurate, so that the composite sheet can be firmly fixed in the correct position during welding, preventing it from moving or falling off, and facilitating the welding operation.

[0010] In one preferred embodiment of the present invention, a plurality of rhomboid cutting grooves are provided near the center of the composite sheet layer, and a composite sheet cutting edge is formed between each pair of rhomboid cutting grooves. A rhomboid cutting groove is provided at one end of the rhomboid cutting groove away from the center of the composite sheet layer, and a composite sheet cutting edge is formed between the rhomboid cutting groove and the rhomboid cutting groove.

[0011] The rhomboid groove structure not only forms a multi-stage cutting edge, but also facilitates the breaking and removal of rock cuttings.

[0012] In one preferred embodiment of the present invention, both the first composite sheet cutting edge and the second composite sheet cutting edge are arranged in a ring array around the center of the composite sheet surface layer.

[0013] It can ensure that the cutting force is evenly distributed when the drill bit is working, avoid local stress concentration, improve the balance and stability of the drill bit, and the ring array helps the drill bit maintain the center trajectory during drilling, reduce uneven wear and vibration, thereby improving drilling quality and extending the service life of the composite plate.

[0014] In one preferred embodiment of the present invention, a support frame is fixedly connected to the composite sheet mounting base on the side near the composite sheet base layer, and an arc-shaped groove is provided on the upper end face of the support frame, and the composite sheet base layer is adapted to the arc-shaped groove.

[0015] The support frame can support the base layer of the composite sheet during welding, thereby increasing the welding efficiency of the composite sheet.

[0016] The technical effects achieved by this utility model are as follows:

[0017] This invention discloses a high-efficiency rhombic composite blade for core drilling bits. By setting composite blade cutting edge one and composite blade cutting edge two, formed by rhombic cutting grooves, on the surface layer of the composite blade, a multi-level, multi-point cutting structure is formed, thereby reducing the contact area between the cutting edge and the rock, reducing drilling resistance, and significantly reducing energy consumption. Furthermore, through rhombic cutting groove one and rhombic cutting groove two, the cut debris can be discharged along the rhombic grooves, preventing poor rock cutting discharge, which would lead to repeated cutting and drill bit mud accumulation, thereby affecting the overall drilling efficiency and increasing the progress and cost of core drilling operations.

[0018] By using the set blocks and slots, the position of the composite sheet base can be limited and fixed, which makes it easy to quickly find the right position and fix it when welding the composite sheet base, effectively improving the welding efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the composite sheet structure of this utility model;

[0021] Figure 3 This is a front view of the composite sheet of this utility model;

[0022] Figure 4 This is a partial schematic diagram of the overall invention.

[0023] Figure 5 This is a schematic diagram of the composite sheet mounting base structure of this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Core drill bit body; 2. Composite sheet mounting base; 3. Clamping block; 4. Clamping slot; 5. Support frame; 6. Composite sheet base layer; 7. Composite sheet surface layer; 8. Rhomboid cutting groove one; 9. Rhomboid cutting groove two; 10. Composite sheet cutting edge one; 11. Composite sheet cutting edge two. Detailed Implementation

[0026] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0027] like Figures 1 to 5As shown, a high-efficiency rhomboid composite sheet for a core drill bit includes a core drill bit body 1, a plurality of composite sheet mounting seats 2 are fixedly installed on the top of the core drill bit body 1, a composite sheet base layer 6 is provided on one side of the composite sheet mounting seat 2, and a composite sheet surface layer 7 is fixedly connected to the side of the composite sheet base layer 6 away from the composite sheet mounting seat 2.

[0028] Among them, a number of composite sheet cutting edges 10 are provided at the center position of the side of the composite sheet surface layer 7 away from the composite sheet base layer 6, and two composite sheet cutting edges 21 are provided at the end of the composite sheet cutting edges 10 away from the center position of the composite sheet surface layer 7.

[0029] In this implementation scheme, the two locking blocks 3 on the back of the composite base 6 are first aligned with the two slots 4 on the composite mounting base 2. Pressure is applied to push the locking blocks 3 into the slots 4 until the bottom of the composite base 6 is completely fitted with the arc-shaped groove on the support frame 5. At this point, the composite base 6 can be quickly welded. During operation, the core drill bit body 1 drives multiple composite plates on it to rotate at high speed and cut into the rock. The composite cutting edge 10 first contacts the rock and breaks it. Then, the composite cutting edge 11 performs secondary crushing and scraping on the already broken rock. This multi-stage cutting method greatly reduces the cutting resistance of a single edge and the required drilling pressure. In addition, several rhomboid cutting grooves 8 and 9 provide a good discharge channel for rock cuttings, preventing drill bit mud buildup, which would affect the overall drilling efficiency.

[0030] like Figures 3 to 5 As shown, the composite sheet mounting base 2 has slots 4 at both ends on the side near the composite sheet base 6, and the composite sheet base 6 has blocks 3 fixedly connected at both ends on the side near the composite sheet mounting base 2, and the blocks 3 are all adapted to the slots 4.

[0031] In the above method, the card block 3 and the card slot 4 are compatible, which can ensure that the position and angle of each composite piece on the composite piece mounting base 2 are accurate. This allows the composite piece to be firmly fixed in the correct position when welding, preventing it from moving or falling off, and facilitating the welding operation.

[0032] like Figure 2 As shown, a number of rhomboid cutting grooves 18 are provided near the center of the composite sheet layer 7, and a composite sheet cutting edge 10 is formed between each pair of rhomboid cutting grooves 18. A rhomboid cutting groove 29 is provided at one end of the rhomboid cutting groove 18 away from the center of the composite sheet layer 7, and a composite sheet cutting edge 21 is formed between the rhomboid cutting groove 29 and the rhomboid cutting groove 18.

[0033] In the above method, the rhomboid groove structure not only forms a multi-stage cutting edge, but also facilitates the crushing and removal of rock cuttings.

[0034] like Figure 2As shown, both composite sheet cutting edge 10 and composite sheet cutting edge 11 are arranged in a ring array around the center of composite sheet surface layer 7.

[0035] The above method ensures that the cutting force is evenly distributed during drill bit operation, avoids local stress concentration, improves the balance and stability of the drill bit, and the annular array helps the drill bit maintain a central trajectory during drilling, reduces uneven wear and vibration, thereby improving drilling quality and extending the service life of the composite material.

[0036] like Figure 5 As shown, a support frame 5 is fixedly connected to the side of the composite sheet mounting base 2 near the composite sheet base 6, and an arc-shaped groove is opened on the upper end surface of the support frame 5, which is adapted to the arc-shaped groove of the composite sheet base 6.

[0037] In the above method, the support frame 5 can support the composite sheet base layer 6 when welding the composite sheet, thereby increasing the welding efficiency of the composite sheet.

[0038] The working principle of this utility model is as follows: First, align the two locking blocks 3 on the back of the composite base plate 6 with the two locking slots 4 on the composite plate mounting base 2, apply pressure, and push the locking blocks 3 into the locking slots 4 until the bottom of the composite base plate 6 is completely fitted with the arc-shaped groove on the support frame 5. At this time, the composite base plate 6 can be quickly welded. During operation, the core drill bit body 1 drives multiple composite plates on it to rotate at high speed and cut into the rock. The composite plate cutting edge 10 first contacts the rock and breaks it. Then, the composite plate cutting edge 21 performs secondary crushing and scraping on the already broken rock. This multi-stage cutting method greatly reduces the cutting resistance of a single edge and the required drilling pressure. In addition, several rhomboid cutting grooves 1 and 2 provide a good discharge channel for rock cuttings, preventing the drill bit from getting mud-covered, thus affecting the overall drilling efficiency.

[0039] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A high-efficiency rhombic composite sheet for coring drill bits, comprising a coring drill bit body (1), characterized in that: Several composite sheet mounting bases (2) are fixedly installed on the top of the core drill bit body (1). A composite sheet base layer (6) is provided on one side of the composite sheet mounting base (2). A composite sheet surface layer (7) is fixedly connected to the side of the composite sheet base layer (6) away from the composite sheet mounting base (2). Among them, the composite sheet layer (7) has a number of composite sheet cutting blades (10) at the center position on the side away from the composite sheet base layer (6), and two composite sheet cutting blades (11) are provided at the end of the composite sheet cutting blades (10) away from the center position of the composite sheet layer (7).

2. The high-efficiency rhomboid composite sheet for core drilling bits according to claim 1, characterized in that: The composite sheet mounting base (2) has slots (4) at both ends on the side near the composite sheet base (6), and the composite sheet base (6) has blocks (3) fixedly connected at both ends on the side near the composite sheet mounting base (2), and the blocks (3) are all adapted to the slots (4).

3. The high-efficiency rhomboid composite sheet for core drilling bits according to claim 1, characterized in that: The composite sheet layer (7) has several rhomboid cutting grooves (8) near its center, and each pair of rhomboid cutting grooves (8) forms a composite sheet cutting edge (10). A rhomboid cutting groove (9) is formed at one end of the rhomboid cutting groove (8) away from the center of the composite sheet layer (7), and a composite sheet cutting edge (11) is formed between the rhomboid cutting groove (9) and the rhomboid cutting groove (8).

4. The high-efficiency rhomboid composite sheet for core drilling bits according to claim 1, characterized in that: Both the first composite sheet cutting edge (10) and the second composite sheet cutting edge (11) are arranged in a ring array at the center of the composite sheet surface layer (7).

5. The high-efficiency rhombic composite sheet for core drilling bits according to claim 1, characterized in that: The composite sheet mounting base (2) is fixedly connected to a support frame (5) on the side near the composite sheet base layer (6), and the upper end face of the support frame (5) is provided with an arc-shaped groove, which is adapted to the composite sheet base layer (6).

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