CN220828225U - Assembly structure of diamond compact and drill bit - Google Patents
Assembly structure of diamond compact and drill bit Download PDFInfo
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- CN220828225U CN220828225U CN202322720991.8U CN202322720991U CN220828225U CN 220828225 U CN220828225 U CN 220828225U CN 202322720991 U CN202322720991 U CN 202322720991U CN 220828225 U CN220828225 U CN 220828225U
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- complementary structure
- drill bit
- polygonal
- substrate layer
- diamond
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- 239000010432 diamond Substances 0.000 title claims abstract description 71
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 70
- 230000000295 complement effect Effects 0.000 claims abstract description 77
- 239000000758 substrate Substances 0.000 claims abstract description 57
- 239000000956 alloy Substances 0.000 claims abstract description 42
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 42
- 238000003466 welding Methods 0.000 abstract description 9
- 239000002131 composite material Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
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- Earth Drilling (AREA)
Abstract
The utility model discloses an assembly structure of a diamond compact and a drill bit, which comprises the following components: the drill bit comprises a drill bit body, wherein a first complementary structure is arranged on one side of the drill bit body, and the first complementary structure is a polygonal clamping groove or a polygonal clamping protrusion; the diamond layer is fixedly arranged on the end face of one end of the hard alloy substrate layer, far away from the diamond layer, is provided with a second complementary structure matched with the first complementary structure, the hard alloy substrate layer and the bit body are clamped with the first complementary structure through the second complementary structure, and the end face of one end of the diamond layer, far away from the hard alloy substrate layer, is provided with a cutting face. In the utility model, the clamping of the polygonal first complementary structure and the polygonal second complementary structure is used for positioning the hard alloy substrate layer, so that the hard alloy substrate layer is prevented from rotating or shifting during welding, and the cutting surface is accurately fixed according to the original set angle.
Description
Technical Field
The utility model relates to the technical field of diamonds, in particular to an assembly structure of a diamond compact and a drill bit.
Background
The diamond compact is a composite superhard material formed by sintering diamond micropowder and hard alloy serving as raw materials under the conditions of high temperature and ultrahigh pressure, and plays an important role as a superabrasive cutting element in a drill bit.
In deeper and complex stratum, the standard plane tooth diamond compact bit has poorer self-sharpening property and slower rock breaking efficiency, and the special-shaped tooth diamond compact bit with a special cutting edge is adopted to reduce the drilling failure rate and improve the drilling speed. The cutting edge of the special-shaped tooth diamond composite sheet is used as a working site and is fixed on the drill bit according to a set direction, so that the drill bit can reliably run according to a designed geometric cutting structure.
The existing special-shaped tooth diamond composite sheet is mainly fixed on a drill bit in a welding mode, and the diamond composite sheet is easy to angularly deviate during welding, so that the direction of a cutting edge of the diamond composite sheet on the drill bit deviates from the design direction, and the actual use effect of the drill bit is affected.
There is thus a need for improvements and improvements in the art.
Disclosure of utility model
In view of the shortcomings of the prior art, the utility model aims to provide an assembly structure of a diamond compact and a drill, which aims to solve the problem that in the prior art, the diamond compact is easy to generate angle deviation during welding, so that the orientation of a cutting edge of the diamond compact on the drill deviates from the design direction, and the actual use effect of the drill is affected.
The technical scheme adopted for solving the technical problems is as follows:
In a first aspect, an embodiment of the present utility model provides an assembly structure of a diamond compact and a drill, including:
The drill bit comprises a drill bit body, wherein a first complementary structure is arranged on one side of the drill bit body, and the first complementary structure is a polygonal clamping groove or a polygonal clamping protrusion;
The diamond layer is fixedly arranged on the end face of one end of the hard alloy substrate layer, a second complementary structure matched with the first complementary structure is arranged on the end face of one end of the hard alloy substrate layer, which is far away from the hard alloy substrate layer, the hard alloy substrate layer is clamped with the drill bit body through the combination of the first complementary structure and the second complementary structure, and a cutting face is arranged on the end face of the diamond layer, which is far away from one end of the hard alloy substrate layer.
As a further improvement technical scheme, the cutting face is provided with a plurality of cutting edges and a polygonal flattening surface, the center point of the polygonal flattening surface is located on the central axis of the diamond layer, the number of edges of the polygonal flattening surface is consistent with that of the cutting edges, the cutting edges are distributed along the radial direction of the cutting face, the outer ends of the cutting edges are respectively connected with the edges of the cutting face, the inner ends of the cutting edges are respectively connected with the corners of the polygonal flattening surface, and the cutting edges are in one-to-one correspondence with the corners of the polygonal flattening surface.
As a further improvement, the shape of the first complementary structure is consistent with the shape of the polygonal flat surface, and the center point of the polygonal clamp protrusion is located on the central axis of the diamond layer.
As a further improvement technical scheme, the polygonal flat surface and the first complementary structure are equilateral triangles and are identical in size, and the polygonal flat surface and the first complementary structure are symmetrical to each other.
As a further improvement technical scheme, one side of the drill bit body is also provided with at least two positioning holes, the end face of the hard alloy substrate layer, which is far away from one end of the diamond layer, is also provided with positioning protrusions with the same number as the positioning holes, and each positioning hole is internally provided with one positioning protrusion.
As a further improvement, the height or depth of the first complementary structure is 0.1-5mm.
Compared with the prior art, the embodiment of the utility model has the following advantages:
The embodiment of the utility model provides an assembly structure of a diamond compact and a drill bit, which comprises the following components: the drill bit comprises a drill bit body, wherein a first complementary structure is arranged on one side of the drill bit body, and the first complementary structure is a polygonal clamping groove or a polygonal clamping protrusion; the diamond layer is fixedly arranged on the end face of one end of the hard alloy substrate layer, a second complementary structure matched with the first complementary structure is arranged on the end face of one end of the hard alloy substrate layer, which is far away from the hard alloy substrate layer, the hard alloy substrate layer is clamped with the drill bit body through the combination of the first complementary structure and the second complementary structure, and a cutting face is arranged on the end face of the diamond layer, which is far away from one end of the hard alloy substrate layer. The diamond layer and the hard alloy substrate layer jointly form the diamond composite sheet, a polygonal first complementary structure is arranged on one side of the drill bit body, a second complementary structure matched with the first complementary structure is arranged on one side of the hard alloy substrate layer, which is close to the drill bit body, and the hard alloy substrate layer is positioned by clamping the polygonal first complementary structure and the second complementary structure, so that the hard alloy substrate layer is prevented from rotating or shifting during welding, and the cutting face is accurately fixed according to the original set angle.
Drawings
FIG. 1 is a schematic diagram of an assembled structure of a diamond compact and a drill bit according to the present utility model;
FIG. 2 is a schematic view of a diamond compact composed of a diamond layer and a cemented carbide substrate layer according to the present utility model;
FIG. 3 is a schematic view of a second structure of a diamond compact composed of a diamond layer and a cemented carbide substrate layer according to the present utility model;
Fig. 4 is a schematic view of a third structure of a diamond compact composed of a diamond layer and a cemented carbide substrate layer according to the present utility model.
In the figure: 1. a bit body; 2. a first complementing structure; 3. a diamond layer; 301. a cutting face; 302. a cutting edge; 303. polygonal flat surfaces; 4. a cemented carbide substrate layer; 5. a second complementing structure; 6. positioning the protrusion.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
Examples:
As shown in fig. 1-4. Wherein, the assembly structure of diamond compact and drill bit includes: the drill bit comprises a drill bit body 1, wherein a first complementary structure 2 is arranged on one side of the drill bit body 1, and the first complementary structure 2 is a polygonal clamping groove or a polygonal clamping protrusion; the diamond layer 3 and the hard alloy substrate layer 4, the diamond layer 3 is fixedly arranged on the end face of one end of the hard alloy substrate layer 4, which is far away from the diamond layer 3, is provided with a second complementary structure 5 which is matched with the first complementary structure 2, the hard alloy substrate layer 4 and the drill bit body 1 are clamped with each other through the combination of the first complementary structure 2 and the second complementary structure 5, and the end face of one end of the hard alloy substrate layer 4, which is far away from the diamond layer 3, is provided with a cutting face 301.
As shown in fig. 1-2, in this embodiment, the assembly structure of the diamond compact and the drill bit includes a drill bit body 1, a diamond layer 3 and a cemented carbide substrate layer 4, wherein a first complementary structure 2 is disposed on the top side of the drill bit body 1, and the first complementary structure 2 is a polygonal slot or a polygonal protrusion; the bottom end face of the cemented carbide substrate layer 4 is provided with a second complementary structure 5 adapted to the first complementary structure 2, for example, when the first complementary structure 2 is a polygonal clamping groove, the second complementary structure 5 is a polygonal clamping protrusion, the cemented carbide substrate layer 4 and the drill bit body 1 are clamped by the combination of the first complementary structure 2 and the second complementary structure 5, the bottom end face of the cemented carbide substrate layer 4 is abutted to one side of the top end of the drill bit body 1 and fixed by welding, the diamond layer 3 is fixedly arranged on the top end face of the cemented carbide substrate layer 4, and the top end face of the diamond layer 3 is provided with a cutting face 301. The diamond layer 3 and the hard alloy substrate layer 4 provided by the utility model jointly form the diamond composite sheet, a polygonal first complementary structure 2 is arranged on one side of the drill bit body 1, a second complementary structure 5 matched with the first complementary structure 2 is arranged on one side of the hard alloy substrate layer 4 close to the drill bit body 1, and the hard alloy substrate layer 4 is positioned by the clamping of the polygonal first complementary structure 2 and the second complementary structure 5 so as to prevent the hard alloy substrate layer 4 from rotating or shifting during welding, thereby realizing the accurate fixing of the cutting surface 301 according to the original set angle.
As shown in fig. 3, as a further solution, the cutting surface 301 is provided with a plurality of cutting edges 302 and a polygonal flat surface 303, a center point of the polygonal flat surface 303 is located on a central axis of the diamond layer 3, the number of edges of the polygonal flat surface 303 is identical to that of the cutting edges 302, each cutting edge 302 is distributed along a radial direction of the cutting surface 301, an outer end of each cutting edge 302 is respectively connected with an edge of the cutting surface 301, an inner end of each cutting edge 302 is respectively connected with each corner of the polygonal flat surface 303, and each cutting edge 302 corresponds to each corner of the polygonal flat surface 303 one by one. The polygonal flat surface 303 is formed by sequentially surrounding a plurality of edges end to end, and the plurality of cutting edges 302 can enable the diamond compact to be repeatedly used for a plurality of times, so that the use cost is reduced; for example, when one of the cutting edges 302 is worn seriously after being used for a period of time and needs to be replaced, the welding position between the cemented carbide substrate layer 4 and the drill bit body 1 is loose, the cemented carbide substrate layer 4 and the drill bit body 1 can be manually disassembled, then the cemented carbide substrate layer 4 is rotated by an angle, and then the first complementary structure 2 and the second complementary structure 5 are clamped, so that the other cutting edge 302 can be replaced by the position where the previous cutting edge 302 is located.
In this embodiment, the shape of the first complementary structure 2 is identical to the shape of the polygonal flat surface 303, and the center point of the polygonal protrusion is located on the central axis of the diamond layer 3. Specifically, when the cutting edge 302 in this embodiment is worn and another cutting edge 302 is replaced, the second complementary structure 5 on the cemented carbide substrate layer 4 is rotated by an angle and reinstalled in the first complementary structure 2, and the direction of the second cutting edge 302 is consistent with that of the first cutting edge 302, so that the cutting effect of the drill is consistent with that of the previous cutting edge.
As a further solution, the polygonal flat surface 303 and the first complementary structure 2 are both equilateral triangles and have the same size, and the polygonal flat surface 303 and the first complementary structure 2 are symmetrical to each other.
As shown in fig. 4, in this embodiment, the drill body 1 is further provided with at least two positioning holes (not shown), the end surface of the cemented carbide substrate layer 4, which is far away from the end of the diamond layer 3, is further provided with positioning protrusions 6, the number of which is identical to that of the positioning holes (not shown), and each of the positioning holes (not shown) is provided with one of the positioning protrusions 6. Specifically, in this embodiment, three positioning holes (not shown) are provided, and three positioning protrusions 6 are provided, the positioning holes (not shown) are in one-to-one correspondence with the positioning protrusions 6 and are clamped, and the three positioning holes (not shown) are distributed on the top side of the drill bit body 1 in an equilateral triangle shape, and the positioning holes (not shown) and the positioning protrusions 6 in this embodiment can replace polygonal clamping grooves and polygonal clamping protrusions and can also be used for positioning the cemented carbide substrate layer 4.
As a further solution, the first complementary structure 2 has a height or depth of 0.1-5mm.
In summary, an embodiment of the present utility model provides an assembly structure of a diamond compact and a drill, including: the drill bit comprises a drill bit body 1, wherein a first complementary structure 2 is arranged on one side of the drill bit body 1, and the first complementary structure 2 is a polygonal clamping groove or a polygonal clamping protrusion; the diamond layer 3 and the hard alloy substrate layer 4, the diamond layer 3 is fixedly arranged on the end face of one end of the hard alloy substrate layer 4, which is far away from the diamond layer 3, is provided with a second complementary structure 5 which is matched with the first complementary structure 2, the hard alloy substrate layer 4 and the drill bit body 1 are clamped with each other through the combination of the first complementary structure 2 and the second complementary structure 5, and the end face of one end of the hard alloy substrate layer 4, which is far away from the diamond layer 3, is provided with a cutting face 301. The diamond layer 3 and the hard alloy substrate layer 4 provided by the utility model jointly form the diamond composite sheet, a polygonal first complementary structure 2 is arranged on one side of the drill bit body 1, a second complementary structure 5 matched with the first complementary structure 2 is arranged on one side of the hard alloy substrate layer 4 close to the drill bit body 1, and the hard alloy substrate layer 4 is positioned by the clamping of the polygonal first complementary structure 2 and the second complementary structure 5 so as to prevent the hard alloy substrate layer 4 from rotating or shifting during welding, thereby realizing the accurate fixing of the cutting surface 301 according to the original set angle.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
The above examples of the present utility model are of course more detailed, but should not be construed as limiting the scope of the utility model, and various other embodiments are possible, based on which those skilled in the art can obtain other embodiments without any inventive task, which fall within the scope of the utility model as defined in the appended claims.
Claims (6)
1. The utility model provides an assembly structure of diamond compact and drill bit which characterized in that includes:
The drill bit comprises a drill bit body, wherein a first complementary structure is arranged on one side of the drill bit body, and the first complementary structure is a polygonal clamping groove or a polygonal clamping protrusion;
The diamond layer is fixedly arranged on the end face of one end of the hard alloy substrate layer, a second complementary structure matched with the first complementary structure is arranged on the end face of one end of the hard alloy substrate layer, which is far away from the hard alloy substrate layer, the hard alloy substrate layer is clamped with the drill bit body through the combination of the first complementary structure and the second complementary structure, and a cutting face is arranged on the end face of the diamond layer, which is far away from one end of the hard alloy substrate layer.
2. The diamond compact and drill bit assembly structure of claim 1, wherein the cutting surface is provided with a plurality of cutting edges and a polygonal flat surface, a center point of the polygonal flat surface is located on a central axis of the diamond layer, the number of edges of the polygonal flat surface is consistent with that of the cutting edges, the cutting edges are distributed along a radius direction of the cutting surface, outer ends of the cutting edges are respectively connected with edges of the cutting surface, inner ends of the cutting edges are respectively connected with corners of the polygonal flat surface, and the cutting edges are in one-to-one correspondence with the corners of the polygonal flat surface.
3. The diamond compact and bit assembly of claim 2 wherein the first complementary structure has a shape that conforms to the shape of the polygonal planar surface, the center point of the polygonal detent being located on the central axis of the diamond layer.
4. The diamond compact and bit assembly of claim 3, wherein the polygonal planar surface and the first complementary structure are equilateral triangles and are identical in size, and the polygonal planar surface and the first complementary structure are symmetrical to each other.
5. The diamond compact and drill bit assembly structure of claim 1, wherein at least two positioning holes are further formed in one side of the drill bit body, positioning protrusions with the same number as the positioning holes are further formed in the end face, away from one end of the diamond layer, of the cemented carbide substrate layer, and one positioning protrusion is respectively arranged in each positioning hole.
6. The diamond compact and bit assembly of claim 1, wherein the first complementary structure has a height or depth of 0.1-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322720991.8U CN220828225U (en) | 2023-10-10 | 2023-10-10 | Assembly structure of diamond compact and drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322720991.8U CN220828225U (en) | 2023-10-10 | 2023-10-10 | Assembly structure of diamond compact and drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220828225U true CN220828225U (en) | 2024-04-23 |
Family
ID=90722142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322720991.8U Active CN220828225U (en) | 2023-10-10 | 2023-10-10 | Assembly structure of diamond compact and drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220828225U (en) |
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2023
- 2023-10-10 CN CN202322720991.8U patent/CN220828225U/en active Active
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