Diamond compact drill bit cutting tool

Abstract

The utility model belongs to the technical field of diamond compact bits, and particularly relates to a diamond compact bit cutting tool which comprises a diamond compact bit body and a driving shaft, and a rectangular groove is formed in the top end of the driving shaft. The top end of the rectangular rod is fixedly connected to the bottom of the diamond compact bit body, the bottom end of the rectangular rod is detachably inserted into the rectangular groove, and clamping grooves are formed in the left side and the right side of the rectangular rod; the clamping assembly comprises two clamping rods and two sliding rods, rectangular holes are formed in the left inner wall and the right inner wall of the rectangular groove, the diamond compact drill bit body is rapidly disassembled and assembled in a clamping and fixing mode, operation is convenient, time and labor are saved, tools do not need to be used for assisting in disassembling and assembling, and the efficiency is high. And the maintenance efficiency of the diamond compact bit body is improved, personnel use is facilitated, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of diamond composite piece drill bits, in particular to a diamond composite piece drill bit cutting tool. Background Art

[0002] PDC drill bits are mainly used in oil drilling, underground drilling in coal and nonferrous metal mines, geological exploration, engineering tunnels and other fields. PDC drill bits rely on the polycrystalline diamond composite pieces installed on the drill body to cut the strata. The composite piece is mainly composed of a cemented carbide matrix and a polycrystalline diamond layer arranged on the cemented carbide matrix. When in use, it overcomes the stratum stress under the action of drilling pressure and torque and eats into the stratum. The underground rock stratum is sheared and broken by the action of the composite piece, thereby achieving the drilling of the drill bit. The cemented carbide matrix of the traditional diamond composite piece is generally a cylindrical structure, and the diamond The overall layer is a thin cylindrical layer, which is mainly formed by diamond micropowder through a high temperature and high pressure molding process to form a sintered body and consolidated on the end face of a columnar cemented carbide substrate. When in use, the outer edge of the diamond layer is used as a cutting edge to scrape the rock formation. However, with the development of drilling technology, the industry has put forward higher requirements on drilling efficiency, drill bit service life and the wide adaptability of the drill bit to drilling in different complex formations. The diamond composite sheet is the main cutting part of the diamond composite sheet drill bit, and its performance directly determines the performance and effect of the drill bit. The conventional composite sheet diamond layer is divided into a flat surface and a curved surface.

[0003] In the prior art, the installation method of the diamond composite drill bit is generally a threaded connection. After the diamond composite drill bit is threadedly connected, the rotation direction of the diamond composite drill bit is opposite to the direction of the threaded connection, so that the diamond composite drill bit will not loosen when rotating. Although the threaded connection method is relatively stable, the threaded connection of the diamond composite drill bit will become tighter and tighter when the diamond composite drill bit is working, resulting in the need to use appropriate tools for disassembly operations, which makes the maintenance and replacement of the diamond composite drill bit inconvenient and has great limitations, reducing maintenance efficiency. For this reason, we propose a diamond composite drill bit cutting tool to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that the installation method of the diamond composite drill bit in the prior art is generally threaded connection. After the diamond composite drill bit is threadedly connected, the rotation direction of the diamond composite drill bit is opposite to the direction of the threaded connection, so that the diamond composite drill bit will not loosen when rotating. Although the threaded connection method is relatively stable, the threaded connection of the diamond composite drill bit will become tighter and tighter when the diamond composite drill bit is working, so that the disassembly operation needs to be carried out with the help of suitable tools, which makes the maintenance and replacement of the diamond composite drill bit inconvenient, has great limitations, and reduces the maintenance efficiency. The proposed diamond composite drill bit cutting tool.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] Diamond composite drill bit cutting tool, including:

[0007] A diamond composite drill bit body and a drive shaft, wherein the top of the drive shaft is provided with a rectangular groove;

[0008] A rectangular rod, the top of which is fixedly connected to the bottom of the diamond composite drill bit body, the bottom of which can be detachably inserted into the rectangular groove, and the left and right sides of the rectangular rod are provided with slots;

[0009] The card-mounting assembly includes: two card rods and two sliding rods. Rectangular holes are opened on the left inner wall and the right inner wall of the rectangular groove. One end of the card rod passes through the corresponding rectangular hole and can be detached and inserted into the corresponding card slot; the top end of the sliding rod is fixedly connected to the bottom of the corresponding card rod, and the bottom end of the sliding rod is slidably connected to the inner wall of the corresponding rectangular hole.

[0010] As a preferred solution of the utility model, a sliding groove is provided on the bottom inner wall of the two rectangular holes, and the bottom end of the sliding rod is slidably connected in the corresponding sliding groove.

[0011] As a preferred solution of the utility model, springs are fixedly connected to the inner walls of the two sliding grooves on the sides away from each other, and the ends of the two springs close to each other are respectively fixedly connected to the sides of the two sliding rods away from each other.

[0012] As a preferred solution of the utility model, the threaded sleeve on the driving shaft is provided with a limiting sleeve, and the inner wall of the limiting sleeve is respectively in contact with the ends of the two clamping rods that are away from each other.

[0013] As a preferred solution of the utility model, the driving shaft is provided with an external thread, the inner wall of the limiting sleeve is provided with an internal thread, and the internal thread is threadably connected to the external thread.

[0014] As a preferred solution of the utility model, two through holes are symmetrically provided on the inner wall of the limit sleeve, and the through holes cooperate with corresponding clamping rods.

[0015] Beneficial effects:

[0016] 1. The initial docking between the diamond composite drill body and the drive shaft can be achieved through the plug-in cooperation between the rectangular rod and the rectangular groove, and then the rectangular rod and the drive shaft can be stably installed and fixed through the plug-in and limit cooperation between the clamping rod and the corresponding clamping groove. Similarly, the diamond composite drill body and the drive shaft can be stably installed and fixed;

[0017] 2. By setting the limiting sleeve, the two clamping rods can be fixed in position, which can prevent the clamping rods from being disconnected from the clamping slots, thereby ensuring the installation stability of the diamond composite drill bit body;

[0018] The utility model realizes the rapid disassembly and assembly of the diamond composite drill bit body by means of a clamping and fixing method, and is easy to operate, saves time and labor, does not need to use tools to assist in disassembly and assembly, improves the maintenance efficiency of the diamond composite drill bit body, is convenient for personnel to use, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a main cross-sectional view of the structure of the utility model;

[0020] Figure 2 This is a structural front view of the drive shaft and external thread of the utility model;

[0021] Figure 3 The utility model is attached Figure 1 The structural diagram of part A in the figure;

[0022] Figure 4 It is a three-dimensional structural diagram of the limit sleeve, internal thread and through hole of the utility model.

[0023] In the figure: 1. diamond composite drill bit body; 2. driving shaft; 3. rectangular rod; 4. clamping groove; 5. rectangular groove; 6. rectangular hole; 7. clamping rod; 8. slide groove; 9. slide rod; 10. spring; 11. external thread; 12. limit sleeve; 13. internal thread; 14. through hole. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Example

[0026] Reference Figure 1-Figure 4, diamond composite drill bit cutting tool, including:

[0027] A diamond composite drill bit body 1 and a drive shaft 2, wherein a rectangular groove 5 is formed at the top of the drive shaft 2;

[0028] A rectangular rod 3, the top of which is welded to the bottom of the diamond composite drill body 1, the bottom of which can be detachably inserted into the rectangular groove 5, and a slot 4 is provided on the left and right sides of the rectangular rod 3;

[0029] The card-mounted assembly includes: two card rods 7 and two slide rods 9. Rectangular holes 6 are opened on the left inner wall and the right inner wall of the rectangular groove 5. One end of the card rod 7 passes through the corresponding rectangular hole 6 and can be detached and inserted into the corresponding card slot 4; the top end of the slide rod 9 is welded to the bottom of the corresponding card rod 7, and the bottom end of the slide rod 9 is slidably connected to the inner wall of the corresponding rectangular hole 6.

[0030] By means of the above structure: through the plug-in cooperation between the rectangular rod 3 and the rectangular groove 5, the preliminary docking between the diamond composite drill bit body 1 and the drive shaft 2 can be achieved, and then the plug-in and limiting cooperation between the clamping rod 7 and the corresponding clamping groove 4 can be used to stably install and fix the rectangular rod 3 and the drive shaft 2, thereby achieving stable installation and fixation between the diamond composite drill bit body 1 and the drive shaft 2. In this way, the diamond composite drill bit body 1 can be quickly disassembled and assembled, and the operation is convenient, time-saving and labor-saving, and there is no need to use tools to assist in disassembly and assembly, thereby improving the maintenance efficiency of the diamond composite drill bit body 1 and facilitating personnel use.

[0031] As a preferred solution of the utility model, a sliding groove 8 is opened on the bottom inner wall of the two rectangular holes 6, and the bottom end of the sliding rod 9 is slidably connected in the corresponding sliding groove 8. Through the sliding limit cooperation between the sliding rod 9 and the sliding groove 8, the card rod 7 can be stably supported and limited in transverse sliding.

[0032] As a preferred solution of the utility model, springs 10 are welded on the inner walls of the two slide grooves 8 on the side away from each other, and the ends of the two springs 10 that are close to each other are respectively welded to the sides of the two slide rods 9 that are away from each other. By setting the springs 10, the two clamping rods 7 can be driven to move away from each other and move to reset.

[0033] As a preferred solution of the utility model, a limit sleeve 12 is provided on the threaded sleeve of the driving shaft 2, and the inner wall of the limit sleeve 12 is respectively in contact with the ends of the two clamping rods 7 that are away from each other. By setting the limit sleeve 12, the two clamping rods 7 can be limited and fixed, which can prevent the clamping rod 7 from being disengaged from the clamping slot 4, thereby ensuring the installation stability of the diamond composite drill bit body 1.

[0034] As a preferred solution of the utility model, an external thread 11 is provided on the drive shaft 2, and an internal thread 13 is provided on the inner wall of the limiting sleeve 12. The internal thread 13 is threadedly connected to the external thread 11. By providing the internal thread 13 and the external thread 11, the limiting sleeve 12 and the drive shaft 2 can be easily connected.

[0035] As a preferred solution of the utility model, two through holes 14 are symmetrically opened on the inner wall of the limit sleeve 12, and the through holes 14 cooperate with the corresponding clamping rods 7. By opening the through holes 14, the clamping rods 7 can be easily moved away from each other and disconnected from the clamping slots 4.

[0036] The working principle of the utility model is as follows: when in use, first rotate the limit sleeve 12 and move the limit sleeve 12 downward. Here, when the limit sleeve 12 moves downward and makes the two through holes 14 correspond to the ends of the two clamping rods 7 that are away from each other, the elastic reset characteristics of the spring 10 can drive the two clamping rods 7 to move away from each other and penetrate the two through holes 14. At this time, the insertion limit between the clamping rod 7 and the clamping slot 4 will be released. At this time, the rectangular rod 3 can be pulled out from the inside of the rectangular slot 5. At this time, the disassembly of the diamond composite drill body 1 can be realized. When installing, the bottom end of the rectangular rod 3 is inserted into the inside of the rectangular slot 5, and then the two clamping slots 4 correspond to the two clamping rods 7. At this time, the two clamping rods 7 are squeezed into the inside of the two clamping slots 4 through the two through holes 14. Press and insert, at this time, rotating the limit sleeve 12 can release the correspondence between the clamping rod 7 and the through hole 14, and at this time the inner wall of the limit sleeve 12 can limit the two clamping rods 7 from moving away from each other, here the limit sleeve 12 is rotated to the top to contact with the bottom of the diamond composite drill bit body 1, at this time, through the plug-in cooperation between the bottom end of the rectangular rod 3 and the rectangular groove 5, and then through the plug-in and limit cooperation between the clamping rod 7 and the corresponding clamping groove 4, the diamond composite drill bit body 1 and the drive shaft 2 can be stably installed and fixed, in this way, the diamond composite drill bit body 1 can be quickly disassembled and assembled, and the operation is convenient, time-saving and labor-saving, and there is no need to use tools to assist in disassembly and assembly, which improves the maintenance efficiency of the diamond composite drill bit body 1 and is convenient for personnel to use.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Diamond composite drill bit cutting tool, characterized in that: include: A diamond composite drill bit body (1) and a drive shaft (2), wherein a rectangular groove (5) is provided at the top end of the drive shaft (2); A rectangular rod (3), the top end of which is fixedly connected to the bottom of the diamond composite drill bit body (1), the bottom end of which can be detachably inserted into the rectangular groove (5), and a clamping groove (4) is provided on the left and right sides of the rectangular rod (3); The clamping assembly comprises: two clamping rods (7) and two sliding rods (9); a rectangular hole (6) is provided on the left inner wall and the right inner wall of the rectangular slot (5); one end of the clamping rod (7) passes through the corresponding rectangular hole (6) and can be detached and inserted into the corresponding clamping slot (4); the top end of the sliding rod (9) is fixedly connected to the bottom of the corresponding clamping rod (7), and the bottom end of the sliding rod (9) is slidably connected to the inner wall of the corresponding rectangular hole (6).

2. The diamond composite drill bit cutting tool according to claim 1, characterized in that: A sliding groove (8) is provided on the inner wall of the bottom of the two rectangular holes (6), and the bottom end of the sliding rod (9) is slidably connected in the corresponding sliding groove (8).

3. The diamond composite drill bit cutting tool according to claim 2, characterized in that: A spring (10) is fixedly connected to the inner wall of the two sliding grooves (8) on the side away from each other, and the ends of the two springs (10) close to each other are respectively fixedly connected to the sides of the two sliding rods (9) away from each other.

4. The diamond composite drill bit cutting tool according to claim 1, characterized in that: A limit sleeve (12) is provided on the threaded sleeve of the driving shaft (2), and the inner wall of the limit sleeve (12) is respectively in contact with ends of two clamping rods (7) that are away from each other.

5. The diamond compact drill bit cutting tool according to claim 4, characterized in that: The driving shaft (2) is provided with an external thread (11), the inner wall of the limiting sleeve (12) is provided with an internal thread (13), and the internal thread (13) is threadedly connected to the external thread (11).

6. The diamond compact drill bit cutting tool according to claim 4, characterized in that: Two through holes (14) are symmetrically formed on the inner wall of the limiting sleeve (12), and the through holes (14) are matched with corresponding clamping rods (7).

Images