CN210460512U - Drill bit and drill bit teeth thereof - Google Patents
Drill bit and drill bit teeth thereof Download PDFInfo
- Publication number
- CN210460512U CN210460512U CN201920769261.8U CN201920769261U CN210460512U CN 210460512 U CN210460512 U CN 210460512U CN 201920769261 U CN201920769261 U CN 201920769261U CN 210460512 U CN210460512 U CN 210460512U
- Authority
- CN
- China
- Prior art keywords
- diamond cylinder
- bit tooth
- diamond
- cylinder
- drill bit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model provides a drill bit and drill bit tooth thereof. The bit tooth comprises a base body and a diamond cylinder fixed at the front end of the base body. The front end part of the diamond cylinder is provided with at least 3 inclined planes, the inclined angles of the at least 3 inclined planes relative to the bottom surface of the diamond cylinder are the same, and the inclined planes are intersected pairwise to form at least 3 side edges, the top ends of the at least 3 side edges are intersected at a vertex, the vertex is positioned on the central axis of the base body, and the vertex forms a drilling edge of the drill bit tooth; the inclined plane and the circumferential surface of the diamond cylinder are intersected to form arc-shaped edges, two adjacent arc-shaped edges and corresponding side edges are intersected at a bottom point, the bottom point is positioned on the circumferential surface of the diamond cylinder, and the bottom point forms a cutting edge of the drill bit tooth. The utility model discloses a bit tooth crushing performance is good, and drilling speed is fast, and shock resistance is strong.
Description
Technical Field
The utility model relates to a drill bit and drill bit tooth of field such as mainly being applied to oil drilling, geological exploration, coal field drilling and production.
Background
At present, the front end part of a drill bit tooth used for petroleum drilling, geological exploration, coal field drilling and production and the like is a diamond layer, the working part of the front end part of the diamond layer is of a plane structure, the circumference of the diamond layer mainly acts with a rock stratum under the action of drilling pressure in the drilling process, and then the diamond layer rotates along the axis of the drill bit tooth to scrape and cut the stratum under the action of torque transmitted by a drilling tool. The impact toughness of the drill bit tooth is completely dependent on the performance of the diamond layer, particularly the selection of the formula of the diamond layer, and the impact toughness is poor; meanwhile, the traditional drill bit has large drilling and cutting resistance and slow drilling speed; and the slag is not smoothly discharged in the drilling process, so that the blockage is easy to occur.
The above information disclosed in the background section is only for enhancement of understanding of the background of the present invention, and therefore it may include information that does not constitute related art known to those of ordinary skill in the art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at overcomes above-mentioned prior art's at least defect, provides one kind and creeps into the resistance little, and the drill bit tooth that the drilling rate is fast.
According to one aspect of the present invention, a bit tooth includes a base and a diamond cylinder fixed to a front end of the base. The front end part of the diamond cylinder is provided with at least 3 inclined planes, the inclined angles of the at least 3 inclined planes relative to the bottom surface of the diamond cylinder are the same, and the inclined planes are intersected pairwise to form at least 3 side edges, the top ends of the at least 3 side edges are intersected at a vertex, the vertex is positioned on the central axis of the base body, and the vertex forms a drilling edge of the drill bit tooth; the inclined plane and the circumferential surface of the diamond cylinder are intersected to form arc-shaped edges, two adjacent arc-shaped edges and corresponding side edges are intersected at a bottom point, the bottom point is located on the circumferential surface of the diamond cylinder, and the bottom point forms a cutting edge of the drill bit tooth.
According to an embodiment of the present invention, the vertical distance from the vertex to the bottom surface of the diamond cylinder is greater than the vertical distance from the bottom point to the bottom surface of the diamond cylinder.
According to an embodiment of the present invention, the bottom point is located at a position on the circumferential surface of the diamond cylinder, and the vertical distance from the bottom point to the bottom surface of the diamond cylinder is greater than the vertical distance from the other positions of the arc-shaped edge to the bottom surface.
According to an embodiment of the present invention, the inclined plane is inclined at an angle of 1.5 to 13.5 degrees with respect to the bottom surface of the diamond cylinder.
According to another aspect of the utility model, a bit tooth includes the base member and is fixed in the diamond cylinder of base member front end, its characterized in that, the front end of diamond cylinder is equipped with the bottom surface and is the regular pyramid of at least 3 base arrises, and the side of the regular pyramid inclines first angle relative to the diamond cylinder bottom surface, by each base arris of the bottom surface of the regular pyramid along the radial of diamond cylinder outwards extend an inclined plane, the inclined plane inclines second angle relative to the diamond cylinder bottom surface, the second angle of at least 3 inclined planes is the same; the vertex of the regular pyramid forms a drilling edge of the bit tooth; the inclined plane and the circumferential surface of the diamond cylinder are intersected to form arc-shaped edges, two adjacent bottom edges and corresponding side edges of the regular pyramid are intersected at a bottom point, the bottom point is located on the circumferential surface of the diamond cylinder, and the bottom point forms a cutting edge of the drill bit tooth.
According to an embodiment of the present invention, the vertical distance from the vertex to the bottom surface of the diamond cylinder is greater than the vertical distance from the bottom point to the bottom surface of the diamond cylinder.
According to an embodiment of the present invention, the bottom point is located at a position on the circumferential surface of the diamond cylinder, and the vertical distance from the bottom point to the bottom surface of the diamond cylinder is greater than the vertical distance from the other positions of the arc-shaped edge to the bottom surface.
According to an embodiment of the present invention, the second angle of the inclined plane relative to the bottom surface of the diamond cylinder is 6 to 18 degrees.
According to an embodiment of the present invention, the first angle of the side face of the regular pyramid inclined with respect to the bottom surface of the diamond cylinder is 1.5 to 13.5 degrees.
According to an embodiment of the present invention, the bottom edge of the regular pyramid is a straight line or an arc line.
According to another aspect of the utility model, a drill bit, including the drill bit body, be equipped with a plurality of blades on the drill bit body, every install at least one drill bit tooth on the blade, the drill bit tooth is the drill bit tooth.
According to the above technical scheme, the utility model discloses possess at least one in following advantage and the positive effect:
in the utility model, at least 3 inclined planes at the front end part of the diamond cylinder of the drill bit tooth are intersected pairwise to form at least 3 lateral edges, the top ends of the at least 3 lateral edges are intersected at a vertex to form the drilling blade of the drill bit tooth, and the drilling blade at the top end part can reduce the drilling resistance and accelerate the drilling speed; simultaneously, still form 3 at least cutting edges on diamond cylinder's periphery, strengthened the utility model discloses a crushing performance and the shock resistance of drill bit tooth to can improve the life of diamond bit tooth.
Drawings
The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
FIG. 1 is a schematic perspective view of one embodiment of a bit tooth according to the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a sectional view taken along line A-A;
FIG. 4 is a schematic perspective view of another embodiment of a tooth for a drill bit according to the present invention;
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 4;
fig. 7 is a schematic perspective view of an embodiment of the drill according to the present invention.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.
Referring to fig. 1, 2 and 3, fig. 1 is a schematic perspective view of an embodiment of a bit tooth according to the present invention; FIG. 2 is a top view of FIG. 1; fig. 3 is a sectional view taken along line a-a. The utility model discloses an embodiment of drill bit tooth includes base member 1 and is fixed in the diamond cylinder 2 of base member 1 front end portion.
The substrate 1 may be in a cylindrical shape or other shapes such as a prism, and the substrate 1 may be made of cemented carbide material.
The diamond cylinder 2 can be fixed on the front end of the base body 1 by means of bonding and the like, the front end of the diamond cylinder 2 is provided with 3 inclined planes 20, the 3 inclined planes 20 have the same inclined angle α relative to the bottom surface of the diamond cylinder 2, the inclined planes 20 are intersected two by two to form 3 side edges 21, the top ends of the 3 side edges 21 are intersected at a vertex 22, the vertex 22 is positioned on the central axis L of the diamond cylinder 2, the vertex 22 forms a drilling edge of a drill bit tooth, the inclined planes 20 are intersected with the circumferential surface of the diamond cylinder 2 to form arc-shaped edges 23, two adjacent arc-shaped edges 23 are intersected with the corresponding side edges 21 at a bottom point 24, the bottom point 24 is positioned on the circumferential surface of the diamond cylinder 2, and the bottom point 24 forms a cutting edge of the drill bit tooth, and the cutting edge is a main cutting part and has fracturing.
In the present embodiment, the number of the inclined surfaces 20 at the tip end of the diamond cylinder 2 is 3; in other embodiments, the number of the inclined surfaces 20 at the front end of the diamond cylinder 2 is not limited to 3, and may be 4, 5, etc., and the number of the cutting edges formed accordingly may also be 4, 5, etc.
Referring to fig. 3, the perpendicular distance H2 from the apex 22 of the diamond cylinder 2, i.e., the drilling edge, to the bottom surface of the diamond cylinder 2 is greater than the perpendicular distance H1 from the base 24, i.e., the cutting edge, to the bottom surface of the diamond cylinder 2. The drilling edge is a tip part which is a vertex 22 formed on the front end surface of the diamond cylinder 2, so that the drilling edge is beneficial to drilling rocks and achieving the effect of breaking the rocks. The cutting edge is a sharp point formed on the circumference of the diamond cylinder 2, which is beneficial to rock fracturing, increases the drilling effect and improves the drilling efficiency; meanwhile, adjacent inclined planes 20 are intersected to form a side edge 21, so that the advancing force of the drill bit teeth in the drilling process is increased, and the rock breaking effect is further improved.
Referring further to fig. 3, in the present embodiment, the inclined plane 20 of the diamond cylinder 2 is inclined at an angle α with respect to the bottom surface of the diamond cylinder 2, the inclination angle α is 6.87 degrees, in other embodiments, the inclination angle α is not limited to 6.87 degrees, and may be other values such as 5 degrees, 6 degrees, 7 degrees, 8 degrees, 9 degrees, 10 degrees, 12 degrees, 13 degrees, 15 degrees, 16 degrees, 18 degrees, etc., and generally the inclination angle α may be in the range of 6-18 degrees, which may be determined according to the size, such as height, diameter, and application of the diamond cylinder 2.
Referring to fig. 1, on the circumferential surface of the diamond cylinder 2, the vertical distance H1 from the bottom point 24 to the bottom surface of the diamond cylinder 2 is greater than the vertical distance H3 from the bottom surface at other positions of the arc-shaped edge 23, for example, at any point P. That is, the thickness of the diamond cylinder 2 at the bottom point 24, i.e., the position of the cutting edge, is greater than that at other positions. On one hand, the abrasion of the cutting edge can be prolonged, the service life of the drill bit tooth is prolonged, on the other hand, the structural strength of the drill bit tooth is enhanced, and the drilling speed is favorably improved.
Referring to fig. 4, 5 and 6, fig. 4 is a schematic perspective view of another embodiment of a tooth of the drill bit of the present invention; FIG. 5 is a top view of FIG. 4; fig. 6 is a cross-sectional view taken along line B-B of fig. 4. The utility model discloses the drill bit tooth of another embodiment of drill bit tooth, including base member 1 with be fixed in the diamond cylinder 2 of base member 1 front end portion.
The front end part of the diamond cylinder 2 is provided with a regular pyramid with 3 bottom edges 26, the side surface 25 of the regular pyramid inclines at a first angle gamma relative to the bottom surface of the diamond cylinder 2, an inclined surface 27 extends outwards from each bottom edge 26 of the bottom surface of the regular pyramid along the radial direction of the diamond cylinder 2, the inclined surface 27 inclines at a second angle β relative to the bottom surface of the diamond cylinder 2, the second angle β of the 3 inclined surfaces 27 is the same, and the second angle β is larger than the first angle gamma. in other embodiments, the second angle β can also be smaller than or equal to the first angle gamma. an angle larger than 90 degrees is formed between the side surface 25 of the regular pyramid and the inclined surface 27, during the drilling process of the drill bit teeth, the side surface 25 and the inclined surface 27 form a larger slag discharge space, which is beneficial to reducing negative slag discharge force, avoiding rock slag blockage, improving drilling speed, and is beneficial to dissipating heat generated by friction during rock breaking, improving drilling efficiency and service life of the drill bit teeth.
The vertex 28 of the regular pyramid is positioned on the central axis L of the diamond cylinder 2, and the vertex 28 forms the drilling edge of the bit tooth; the inclined plane 27 intersects with the circumferential surface of the diamond cylinder 2 to form arc-shaped edges 29, two adjacent arc-shaped edges 29 intersect with two adjacent bottom edges 26 and corresponding side edges 30 of the regular pyramid at a bottom point 31, the bottom point 31 is located on the circumferential surface of the diamond cylinder 2, and the bottom point 31 forms a cutting edge of the bit tooth, wherein the cutting edge is a main cutting part and has the functions of fracturing, breaking rock and cutting.
In the present embodiment, the number of sides of the bottom surface of the regular pyramid at the distal end of the diamond cylinder 2 is 1, and the bottom edge 26 of the bottom surface is a straight line; in other modified embodiments, the bottom edge 26 may have other shapes such as an arc shape. The number of sides of the bottom surface may be 4, 5, 6, etc., and the number of cutting edges formed correspondingly may be 4, 5, 6, etc.
Referring to fig. 6, the perpendicular distance S1 from the apex 28 to the bottom surface of the diamond cylinder 2 is greater than the perpendicular distance S2 from the base 31 to the bottom surface of the diamond cylinder 2. The top drilling edge is a tip part which is the vertex formed on the front end surface of the diamond cylinder 2, so that the drilling tool is beneficial to drilling into rocks and achieves the effect of breaking the rocks. The cutting edge is a sharp point formed on the circumference of the diamond cylinder 2, which is beneficial to rock fracturing, increases the drilling effect and improves the drilling efficiency; meanwhile, the side edges 30 of the regular pyramid and the bottom edges 26 of the regular pyramid increase the advancing force of the drill bit teeth in the drilling process, and the rock breaking effect is further improved.
Referring further to fig. 6, in the present embodiment, the second angle β of the slope 27 with respect to the bottom surface of the diamond cylinder 2 is 17.31 degrees, in other embodiments, the second angle β is not limited to 17.31 degrees, and may be other values such as 6 degrees, 7 degrees, 9 degrees, 10 degrees, 12 degrees, 13 degrees, 15 degrees, 16 degrees, 18 degrees, etc., and generally the second angle β is feasible within the range of 6-18 degrees, the first angle γ of the side surface 25 of the right pyramid with respect to the bottom surface of the diamond cylinder 2 is 6.87 degrees, in other embodiments, the first angle γ is not limited to 6.87 degrees, and may be other values such as 1.5 degrees, 3 degrees, 5 degrees, 6 degrees, 7 degrees, 8 degrees, 9 degrees, 10 degrees, 11 degrees, 12 degrees, 13 degrees, etc., and generally the first angle γ is feasible within the range of 1.5-13.5 degrees.
Referring to fig. 4, on the circumferential surface of the diamond cylinder 2, the perpendicular distance S3 from the bottom point 31 to the bottom surface of the diamond cylinder 2 is greater than the perpendicular distance S4 from other positions of the curved edge 29, such as the point M, to the bottom surface. That is, the thickness of the bottom point 31, i.e. the position of the cutting edge, of the diamond cylinder 2 is greater than that of the other positions, so that on one hand, the abrasion of the cutting edge is prolonged, the wear resistance is enhanced, and the service life of the drill bit teeth is prolonged; on the other hand, the structural strength of the drill bit teeth is enhanced, and the drilling speed is improved.
The bit tooth shown in fig. 4 may be formed by using a mold, or may be formed by machining, for example, a regular pyramid is formed at the front end of the diamond cylinder 2 to form a drilling edge; and then the diamond cylinder 2 at the bottom of the regular pyramid is processed with an inclined plane 27.
Referring to fig. 7, fig. 7 is a schematic perspective view of an embodiment of the drill according to the present invention. As shown in fig. 7, an embodiment of the drill of the present invention includes a drill body 100, a plurality of blades 101, each are disposed on the drill body, a plurality of drill teeth 102 are mounted on the blades 101, the drill teeth 102 are the drill teeth of the present invention.
The utility model discloses the drill bit is being used for oil drilling, geological exploration, coal field to bore and adopt etc. and it is little to creep into the resistance, and drilling speed is fast, long service life.
Relative terms, such as "upper" or "lower", "front" or "rear", may be used in the above embodiments to describe one component's relative relationship to another component of the icon. It will be understood that if the device illustrated in the drawings is turned over and turned upside down, elements described as "upper" or "lower", "front" or "rear" will be referred to as elements "lower" or "upper", "rear" or "front". The terms "a," "an," "the," and "at least one" are used to indicate the presence of one or more elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements other than the listed elements, and the terms "first," "second," and the like, are used merely as labels, and are not numerical limitations on their objects.
It is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth herein. The present invention is capable of other embodiments and of being practiced and carried out in a variety of ways. The foregoing variations and modifications fall within the scope of the present invention. It will be understood that the invention disclosed and defined herein extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. All of these different combinations constitute various alternative aspects of the present invention. The embodiments described herein explain the best modes known for practicing the invention and will enable others skilled in the art to utilize the invention.
Claims (14)
1. A bit tooth comprises a base body and a diamond cylinder fixed at the front end of the base body, and is characterized in that the front end of the diamond cylinder is provided with at least 3 inclined planes, the inclined angles of the at least 3 inclined planes relative to the bottom surface of the diamond cylinder are the same, the inclined planes are intersected pairwise to form at least 3 lateral edges, the top ends of the at least 3 lateral edges are intersected at a vertex, the vertex is positioned on the central axis of the base body, and the vertex forms a drilling edge of the bit tooth; the inclined plane and the circumferential surface of the diamond cylinder are intersected to form arc-shaped edges, two adjacent arc-shaped edges and corresponding side edges are intersected at a bottom point, the bottom point is located on the circumferential surface of the diamond cylinder, and the bottom point forms a cutting edge of the drill bit tooth.
2. The bit tooth of claim 1, wherein the apex point is a greater vertical distance from the bottom surface of the diamond cylinder than the base point.
3. The bit tooth of claim 1, wherein the perpendicular distance from the bottom point to the bottom surface of the diamond cylinder is greater on the circumferential surface of the diamond cylinder than the perpendicular distance from other locations of the arcuate edge to the bottom surface.
4. The bit tooth of claim 1, wherein the bevel is inclined at an angle of 1.5 to 13.5 degrees relative to the bottom surface of the diamond cylinder.
5. The bit tooth as recited in claim 1 wherein said chamfer is inclined at an angle of 6.87 degrees relative to the bottom surface of said diamond cylinder.
6. A bit tooth comprises a base body and a diamond cylinder fixed at the front end of the base body, wherein the front end of the diamond cylinder is provided with a right pyramid with a bottom surface of at least 3 bottom edges, the side surface of the right pyramid is inclined relative to the bottom surface of the diamond cylinder by a first angle, each bottom edge of the bottom surface of the right pyramid extends outwards along the radial direction of the diamond cylinder by an inclined surface, the inclined surface is inclined relative to the bottom surface of the diamond cylinder by a second angle, and the second angles of at least 3 inclined surfaces are the same; the vertex of the regular pyramid forms a drilling edge of the bit tooth; the inclined plane and the circumferential surface of the diamond cylinder are intersected to form arc-shaped edges, two adjacent bottom edges and corresponding side edges of the regular pyramid are intersected at a bottom point, the bottom point is located on the circumferential surface of the diamond cylinder, and the bottom point forms a cutting edge of the drill bit tooth.
7. The bit tooth of claim 6, wherein the apex point is a greater vertical distance from the bottom surface of the diamond cylinder than the base point.
8. The bit tooth of claim 6, wherein the perpendicular distance from the bottom point to the bottom surface of the diamond cylinder is greater on the circumferential surface of the diamond cylinder than the perpendicular distance from other locations of the arcuate edge to the bottom surface.
9. The bit tooth as recited in claim 6 wherein said chamfer is inclined at a second angle of 6-18 degrees relative to the bottom surface of said diamond cylinder.
10. The bit tooth as recited in claim 6 wherein said chamfer is inclined at a second angle of 17.31 degrees relative to the bottom surface of said diamond cylinder.
11. The bit tooth of claim 6, wherein the side of the right pyramid is inclined at a first angle of 1.5 to 13.5 degrees relative to the bottom surface of the diamond cylinder.
12. The bit tooth of claim 6, wherein the side of the right pyramid is inclined at a first angle of 6.87 degrees relative to the bottom surface of the diamond cylinder.
13. The bit tooth according to claim 6, wherein the bottom edge of the regular pyramid is in the shape of a straight line or an arc.
14. A drill bit comprising a bit body having a plurality of blades, each blade having at least one bit tooth mounted thereon, wherein the bit teeth are as claimed in any one of claims 1 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920769261.8U CN210460512U (en) | 2019-05-24 | 2019-05-24 | Drill bit and drill bit teeth thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920769261.8U CN210460512U (en) | 2019-05-24 | 2019-05-24 | Drill bit and drill bit teeth thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210460512U true CN210460512U (en) | 2020-05-05 |
Family
ID=70438575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920769261.8U Active CN210460512U (en) | 2019-05-24 | 2019-05-24 | Drill bit and drill bit teeth thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210460512U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112276098A (en) * | 2020-11-05 | 2021-01-29 | 河南亚龙金刚石制品股份有限公司 | Non-uniform preformed diamond compact and preparation method thereof |
| CN113338809A (en) * | 2021-06-07 | 2021-09-03 | 武汉科技大学 | Movable PDC (polycrystalline diamond compact) tooth with auxiliary cutting teeth |
| CN113738285A (en) * | 2020-05-27 | 2021-12-03 | 中国石油天然气集团有限公司 | Composite sheet with cutting ridges and inclined cutting faces and PDC drill bit |
-
2019
- 2019-05-24 CN CN201920769261.8U patent/CN210460512U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113738285A (en) * | 2020-05-27 | 2021-12-03 | 中国石油天然气集团有限公司 | Composite sheet with cutting ridges and inclined cutting faces and PDC drill bit |
| CN112276098A (en) * | 2020-11-05 | 2021-01-29 | 河南亚龙金刚石制品股份有限公司 | Non-uniform preformed diamond compact and preparation method thereof |
| CN112276098B (en) * | 2020-11-05 | 2022-12-02 | 河南亚龙金刚石制品股份有限公司 | Non-uniform preformed diamond compact and preparation method thereof |
| CN113338809A (en) * | 2021-06-07 | 2021-09-03 | 武汉科技大学 | Movable PDC (polycrystalline diamond compact) tooth with auxiliary cutting teeth |
| CN113338809B (en) * | 2021-06-07 | 2024-03-26 | 武汉科技大学 | Movable PDC tooth with auxiliary cutting teeth |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210460512U (en) | Drill bit and drill bit teeth thereof | |
| US5161627A (en) | Attack tool insert with polycrystalline diamond layer | |
| EP1945908B1 (en) | Rotatable cutting tool with reverse tapered body | |
| EP0920568B1 (en) | Cutting element tip configuration for an earth-boring bit | |
| US8136887B2 (en) | Non-rotating pick with a pressed in carbide segment | |
| RU2615560C2 (en) | Drill bit with modular cutters and controlled drilling specific pressure | |
| US7798257B2 (en) | Shaped cutter surface | |
| US20100244545A1 (en) | Shearing Cutter on a Degradation Drum | |
| CN108291427A (en) | Fixation bite drill bit with on-plane surface cutting element and other downhole tools above | |
| US4951761A (en) | Rock drill | |
| US9458607B2 (en) | Rotatable cutting tool with head portion having elongated projections | |
| US20150285005A1 (en) | Rupture Cutters with High Penetration Utility | |
| AU2008271918A1 (en) | Cutting tip and tool | |
| US8418784B2 (en) | Central cutting region of a drilling head assembly | |
| CN210888808U (en) | Drill bit tooth and drill bit with same | |
| CN208518606U (en) | A kind of rotor block formula borehole-enlarging drilling tool of novel head-on structure | |
| CN103343667A (en) | Steel PDC drilling bit with erosion-proof tooth cavities | |
| CN205314922U (en) | Wing formula composite drill bit | |
| Dvornikov et al. | Main development trends and some technical decisions on mining tools equipped with super-hard composite materials inserts | |
| CN211287529U (en) | Novel convex ridge-shaped cutting tooth | |
| CN214944236U (en) | Embedded sharp pick | |
| CN218311027U (en) | Multifunctional herringbone cutter head | |
| CN212454259U (en) | Mi-character pyramid type composite sheet six-blade drill bit | |
| CN215632792U (en) | Polycrystalline diamond compact | |
| CN216841662U (en) | Long-amplitude cycloidal tooth-shaped single-end cutter type cutting pick and roller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |