Clamping device for lateral impact detection of conical spherical diamond compact

Abstract

The utility model discloses a clamping device for lateral impact detection of a conical spherical diamond compact. The clamping device comprises a sample seat, a sample seat connecting plate, a base and the conical spherical compact, a bolt counter bore is formed in the sample seat, a bolt hole is formed in the sample seat connecting plate, and a square groove and a bolt blind hole are formed in one side of the base; the sample seat and the sample seat connecting plate are fixedly connected in the square groove through the matching among a bolt, a bolt hole in the sample seat connecting plate and a bolt blind hole in the base; the conical spherical compact comprises a conical spherical diamond tooth head and a hard alloy matrix, and relates to the technical field of impact resistance detection of conical spherical polycrystalline diamond compacts. According to the clamping device for lateral impact detection of the conical spherical clad sheet, lateral impact performance test and evaluation of the conical spherical clad sheet are achieved on existing conventional plane clad sheet drop hammer impact detection equipment, and the clamping device is easy to assemble and disassemble and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of impact resistance detection of conical spherical polycrystalline diamond composite sheets, in particular to a clamping device for lateral impact detection of conical spherical diamond composite sheets. Background Art

[0002] Polycrystalline diamond composite sheet is a super-hard composite material composed of polycrystalline diamond layer and cemented carbide matrix. It has the hardness and wear resistance of diamond, as well as the impact resistance and weldability of cemented carbide. It is widely used in oil and gas drilling, geological drilling, engineering excavation, coal mining and other fields. Cone-spherical composite sheet improves the working end face of the conventional diamond composite sheet with a flat structure into an arc and spherical structure, and improves the rock breaking mechanism of the conventional composite sheet, which is mainly a compression and shearing method, into a plowing method. Therefore, the ability of the cone-spherical composite sheet to penetrate into the formation is greatly improved, and the rock breaking efficiency is higher. At present, the cone-spherical composite sheet is more and more widely used in drilling tools and tools such as PDC drill bits, cone-PDC hybrid drill bits, and picks.

[0003] When the conical composite piece is installed on the PDC drill bit body and the pick seat, the conical part is almost completely exposed, which is higher than the exposed height of the conventional flat composite piece. In addition, the tooth head is sharper, so the conical composite piece is subjected to greater impact strength when working. At present, the performance testing of the conical composite piece focuses on its forward impact resistance. However, in actual working conditions such as drilling, tunneling and milling, the lateral impact breakage failure of the diamond tooth head of the conical composite piece is becoming a key restriction on its further application. The existing equipment and fixtures for impact resistance testing of diamond composite pieces are mainly designed for lateral impact testing of planar structure composite pieces. However, there are significant differences in the tooth head height and tooth structure of the conical composite piece, which makes the impact method of conventional planar composite pieces not applicable to the conical composite piece. Therefore, the design and development of a lateral impact detection method for conical composite pieces is an urgent problem to be solved in order to improve the performance evaluation of conical composite pieces. Utility Model Content

[0004] The purpose of the present application is to address the above-mentioned problems, to make matching improvements on the basis of the existing conventional planar composite sheet drop hammer impact testing equipment, and to provide a clamping device for lateral impact testing of conical spherical composite sheets, thereby realizing lateral impact performance testing and evaluation of conical spherical composite sheets.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a clamping device for lateral impact detection of a conical spherical diamond composite sheet, comprising a sample seat, a sample seat connecting plate, a base and a conical spherical composite sheet; a bolt countersunk hole is provided inside the sample seat, a bolt hole is provided inside the sample seat connecting plate, a square groove and a bolt blind hole are provided on one side of the base, the sample seat and the sample seat connecting plate are fixedly connected in the square groove by bolts, the bolt holes on the sample seat connection and the bolt blind holes on the base; the conical spherical composite sheet comprises a conical spherical diamond tooth head and a cemented carbide substrate, a circular sample hole and a circular small through hole are provided on one side of the sample seat, the circular sample hole and the circular small through hole are connected, and the circular sample hole is adapted to the conical spherical composite sheet.

[0006] As a further solution of the utility model: a clamping device for lateral impact detection of a conical-spherical diamond composite sheet, the angle between the symmetry axis of the circular sample hole and the horizontal direction is β, the angle range of the angle β is 45°-70°, and the depth of the circular sample hole is the height of the cemented carbide substrate at one end of the conical-spherical composite sheet.

[0007] As a further solution of the utility model: a clamping device for lateral impact detection of a conical spherical diamond composite sheet, the base is a test platform of an impact test instrument, and the square groove is used for plane positioning of a sample holder.

[0008] As a further solution of the utility model: a clamping device for lateral impact detection of a conical spherical diamond composite sheet, a bolt blind hole is opened on one side of the base, and the bolt blind hole is connected to the bolt hole.

[0009] As a further solution of the utility model: a clamping device for lateral impact detection of a conical spherical diamond composite sheet, the diameter of the circular sample hole is larger than the diameter of the sample, and the specific value of the diameter of the circular sample hole being larger than the sample diameter is 0.05-0.2mm.

[0010] As a further solution of the utility model: a clamping device for lateral impact detection of a conical spherical diamond composite sheet, the diameter of the circular small through hole is smaller than the diameter of the circular sample hole, and the circular small through hole has exhaust function and auxiliary pushing function.

[0011] As a further solution of the utility model: a clamping device for lateral impact detection of a conical spherical diamond composite sheet, the sample is fixed in a circular sample hole by high-temperature brazing.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The present application provides a clamping device for lateral impact detection of a conical spherical composite sheet, thereby realizing the lateral impact performance test and evaluation of the conical spherical composite sheet on the existing conventional flat composite sheet drop hammer impact detection equipment. The clamping device is easy to load and unload and convenient to use;

[0014] 2. In the present application, the conical-spherical composite piece is fixed on the sample holder by high-temperature brazing process, and the same welding process requirements and cutting prerequisites as the conical-spherical composite piece in the application of drill bits, cutting teeth and other drilling tools and tools are maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the assembly of the overall structure of a clamping device for lateral impact detection of a cone-spherical diamond composite sheet according to the utility model;

[0016] Figure 2 The utility model is a clamping device for lateral impact detection of cone-spherical diamond composite sheet Figure 1 A top view of the sample holder in the middle;

[0017] In the figure: 1. sample holder; 11. circular sample hole; 12. circular small through hole; 13. bolt countersunk hole; 2. sample holder connecting plate; 21. bolt hole; 3. base; 31. bolt blind hole; 32. square groove; 4. conical spherical composite piece; 41. conical spherical diamond tooth head; 42. cemented carbide substrate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The following is an explanation of the embodiments of the present utility model based on the overall structure of the present utility model.

[0020] Please refer to the accompanying drawings. In an embodiment of the utility model, a clamping device for lateral impact detection of a conical spherical diamond composite sheet comprises a sample holder 1, a sample holder connecting plate 2, a base 3 and a conical spherical composite sheet 4; a bolt countersunk hole 13 is provided inside the sample holder 1, a bolt hole 21 is provided inside the sample holder connecting plate 2, a square groove 32 and a bolt blind hole 31 are provided on one side of the base 3, and the sample holder 1 and the sample holder connecting plate 2 are fixedly connected in the square groove 32 by the cooperation between the bolt, the bolt hole 21 on the sample holder connecting plate 2 and the bolt blind hole 31 on the base 3; the conical spherical composite sheet 4 comprises a conical spherical diamond tooth head 41 and a cemented carbide substrate 42, a circular sample hole 11 and a circular small through hole 12 are provided on one side of the sample holder 1, the circular sample hole 11 and the circular small through hole 12 are connected, and the circular sample hole 11 is adapted to the conical spherical composite sheet 4.

[0021] As a further solution of the utility model: a clamping device for lateral impact detection of a conical spherical diamond composite sheet, the angle between the symmetry axis of the circular sample hole 11 and the horizontal direction is β, the angle range of the angle β is 45°-70°, and the depth of the circular sample hole 11 is the height of the cemented carbide substrate 42 at one end of the conical spherical composite sheet 4.

[0022] As a further solution of the utility model: a clamping device for lateral impact detection of a conical spherical diamond composite sheet, the base 3 is a test platform of an impact test instrument, and the square groove 32 is used for plane positioning of the sample holder 1.

[0023] As a further solution of the utility model: a clamping device for lateral impact detection of a conical spherical diamond composite sheet, a bolt blind hole 31 is opened on one side of the base 3, and the base bolt blind hole 31 is connected to the bolt hole 21.

[0024] As a further solution of the utility model: a clamping device for lateral impact detection of a conical spherical diamond composite sheet, the diameter of the circular sample hole 11 is larger than the diameter of the sample, and the specific value of the diameter of the circular sample hole 11 being larger than the sample diameter is 0.05-0.2mm.

[0025] As a further solution of the utility model: a clamping device for lateral impact detection of a conical spherical diamond composite sheet, the diameter of the small circular through hole 12 is smaller than the diameter of the circular sample hole 11, the small circular through hole 12 has an exhaust function and an auxiliary pushing function, the diameter of the small circular through hole 12 is smaller than the diameter of the circular sample hole 11, and it can be used as an exhaust hole during sample welding, and can also provide a thrust channel when taking out the sample in reverse, thereby facilitating sample removal.

[0026] As a further solution of the utility model: a clamping device for lateral impact detection of a conical spherical diamond composite sheet, the sample is fixed in the circular sample hole 11 by high-temperature brazing.

[0027] The working principle of the utility model is: in this application, the diameter and depth of the circular sample hole 11 can be changed to realize the sample detection of conical spherical composite sheets 4 of different specifications and models. Specifically, the inclination angle β of the axis of the circular sample hole 11 can make the sample tilt forward a certain angle to meet the test requirements. After the sample is welded and fixed to the fixture, the intersection of the cone contour line at the upper end of the conical spherical composite sheet 4 and the arc contour line of the cone head is the impact point of the lateral impact test. At this time, the angle between the upper cone contour line and the horizontal direction is α, α is 0°-25°, preferably 15°; and the diameter and depth of the circular sample hole 11 can be changed to realize the sample detection of conical spherical composite sheets 4 of different specifications and models. The symmetry axis of the circular sample hole 11 is tilted at a certain angle, and the angle with the horizontal direction is β, β is 45°-70°, preferably 60°.

[0028] What is described above 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. A clamping device for lateral impact detection of a conical spherical diamond composite sheet, comprising a sample holder (1), a sample holder connecting plate (2), a base (3) and a conical spherical composite sheet (4); characterized in that: The sample holder (1) is provided with a bolt countersunk hole (13) inside, the sample holder connecting plate (2) is provided with a bolt hole (21) inside, and a square groove (32) and a bolt blind hole (31) are provided on one side of the base (3); the sample holder (1) and the sample holder connecting plate (2) are fixedly connected in the square groove (32) by means of bolts, the bolt holes (21) on the sample holder connecting plate (2) and the bolt blind holes (31) on the base (3); The conical spherical composite sheet (4) comprises a conical spherical diamond tooth head (41) and a cemented carbide substrate (42); a circular sample hole (11) and a circular small through hole (12) are provided on one side of the sample holder (1); the circular sample hole (11) and the circular small through hole (12) are connected; and the circular sample hole (11) is adapted to the conical spherical composite sheet (4).

2. The clamping device for lateral impact detection of a cone-spherical diamond composite sheet according to claim 1 is characterized in that: The angle between the symmetry axis of the circular sample hole (11) and the horizontal direction is β, and the angle range of the angle β is 45°-70°. The depth of the circular sample hole (11) is the height of the cemented carbide substrate (42) at one end of the conical spherical composite sheet (4).

3. The clamping device for lateral impact detection of a cone-spherical diamond composite sheet according to claim 2, characterized in that: The base (3) is a test platform of an impact test instrument, and the square groove (32) is used for plane positioning of the sample holder (1).

4. The clamping device for detecting lateral impact of a cone-spherical diamond composite sheet according to claim 3, characterized in that: A blind bolt hole (31) is provided on one side of the base (3), and the blind bolt hole (31) is communicated with the bolt hole (21).

5. The clamping device for detecting lateral impact of a cone-spherical diamond composite sheet according to claim 4, characterized in that: The diameter of the circular sample hole (11) is larger than the diameter of the sample, and the specific value of the diameter of the circular sample hole (11) being larger than the diameter of the sample is 0.05-0.2 mm.

6. The clamping device for lateral impact detection of cone-spherical diamond composite sheets according to claim 5, characterized in that: The diameter of the circular small through hole (12) is smaller than the diameter of the circular sample hole (11), and the circular small through hole (12) has an exhaust function and an auxiliary pushing function.

7. A clamping device for lateral impact detection of a cone-spherical diamond composite sheet according to claim 6, characterized in that: The sample is fixed in the circular sample hole (11) by high-temperature brazing.

Images