CN113846974A - Multi-groove diamond composite sheet, anchor rod drill bit, coreless drill bit and core drill bit - Google Patents
Multi-groove diamond composite sheet, anchor rod drill bit, coreless drill bit and core drill bit Download PDFInfo
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- CN113846974A CN113846974A CN202011088111.4A CN202011088111A CN113846974A CN 113846974 A CN113846974 A CN 113846974A CN 202011088111 A CN202011088111 A CN 202011088111A CN 113846974 A CN113846974 A CN 113846974A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
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- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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- Environmental & Geological Engineering (AREA)
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- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a multi-groove diamond composite sheet, an anchor rod drill bit, a coreless drill bit and a core drill bit, wherein the diamond composite sheet comprises a hard alloy substrate and a diamond layer, the diamond layer is sintered on the hard alloy substrate through high temperature and high pressure, the bottom end surface of the diamond layer is a plane combined with the hard alloy layer, the cutting end surface of the diamond layer is a truncated cone-shaped drum profile, a plurality of separating grooves which are distributed adjacently are arranged on the edge of the cutting end surface of the diamond layer, and cutting edges are formed between the adjacent separating grooves, the edge of the diamond layer is provided with the separating grooves, so that the edge of the diamond forms a plurality of zigzag cutting edges, the separating grooves prevent cracks from expanding on the whole diamond layer, when the diamond layer is impacted by the same size, the falling area of the diamond layer is greatly reduced, and the service life of the diamond composite sheet is greatly prolonged, meanwhile, the cutting edges between the separation grooves release internal stress in the diamond layer, and the diamond layer and the base body are prevented from being layered.
Description
Technical Field
The invention relates to the technical field of mining drill bits, in particular to a multi-groove diamond compact, an anchor rod drill bit, a coreless drill bit and a core drill bit.
Background
The diamond composite sheet is a composite material synthesized by a diamond layer and a hard alloy matrix under the conditions of high temperature and high pressure, the diamond layer has the characteristics of high hardness and good wear resistance, the hard alloy improves the flexibility and weldability of the composite material on the whole, the material is used for manufacturing a large number of cutting teeth of petroleum geological drill bits, and because the hard alloy is always worn before the diamond layer when the diamond composite sheet is used underground, the diamond hard alloy composite sheet always keeps good self-sharpening property, and higher mechanical drilling speed can be obtained by applying very low drilling pressure, but in use, due to the influence of complex geological conditions on the diamond hard alloy composite sheet, the diamond hard alloy composite sheet sometimes cracks, the service life of the composite sheet is greatly shortened, and the cracks can possibly occur on the hard alloy layer or the interface of the hard alloy layer and the diamond layer, but may also occur in the diamond layer. The cracking of the hard alloy layer can be solved by methods such as strengthening and toughening of the hard alloy, the cracking problem of the interface of the hard alloy layer and the diamond layer is mainly caused by the reasons that the thermal expansion coefficients of the hard alloy and the diamond are greatly different, large internal stress exists, the bonding force between the hard alloy layer and the diamond layer is small, and the like, and the method for solving the cracking problem comprises the step of grooving on the hard alloy layer so as to increase the bonding force between the hard alloy layer and the diamond layer and adjust the thickness ratio between the hard alloy layer and the diamond layer, and the like. The diamond layer is cracked from micro cracks, and during the tunneling process of the drill bit, due to the change of the geological structure, the tunneling surface of the diamond layer is continuously subjected to unbalanced impact force, so that tiny cracks can appear at the boundaries of the diamond layer, particularly the diamond layer, and the cracks can continuously expand until the cracks penetrate through the whole diamond layer or extend into the surface of the diamond layer or the hard alloy layer, so that the diamond layer with a large area or the diamond layer connected with the hard alloy layer falls off from the diamond hard alloy composite sheet, and the diamond hard alloy composite sheet fails.
Disclosure of Invention
In order to solve the problems, the invention provides a multi-groove diamond compact, an anchor rod drill bit, a coreless drill bit and a core drill bit.
The specific contents are as follows: the multi-groove diamond composite sheet comprises a hard alloy substrate and a diamond layer and is characterized in that the diamond layer is sintered on the hard alloy substrate at high temperature and high pressure, the bottom end face of the diamond layer is a plane combined with the hard alloy layer, the cutting end face of the diamond layer is a truncated cone-shaped drum profile, a plurality of separation grooves which are distributed adjacently are arranged on the edge of the cutting end face of the diamond layer, a cutting edge is formed between every two adjacent separation grooves, the central angle corresponding to the cutting edge is alpha, and the alpha is more than or equal to 20 degrees.
Preferably, the separation groove is a rectangular groove or a trapezoidal groove which is cut from the circumferential surface of the diamond layer inwards along the radial direction to form a slope, the width of the rectangular groove or the trapezoidal groove formed on the circumferential surface of the diamond layer is L which is more than or equal to 0.5mm, the included angle between the slope surface of the rectangular groove or the trapezoidal groove and the bottom end surface of the diamond layer is beta which is less than or equal to 60 degrees.
Preferably, the separation groove is a rectangular groove or a trapezoidal groove which is formed by cutting off the circumferential surface of the diamond layer from the radial direction to the inside to form a slope, the width of the rectangular groove or the trapezoidal groove formed on the circumferential surface of the diamond layer is M, M is more than or equal to 0.5mm, and the included angle between the slope surface of the rectangular groove or the trapezoidal groove and the bottom end surface of the diamond layer is delta and delta is less than or equal to 60 degrees.
Preferably, the separation groove is a rectangular groove or a trapezoidal groove formed by cutting and penetrating upwards from the end face of the bottom of the diamond layer, the width of the rectangular groove or the trapezoidal groove formed on the circumferential surface of the diamond layer is N, N is more than or equal to 0.5mm, the depth of the rectangular groove or the trapezoidal groove is H, and H is more than or equal to 1 mm.
Preferably, the drilling tool comprises a drilling shank part and a drilling base part which are integrally formed, wherein the drilling base part is arranged at the upper part of the drilling shank part, the drilling base part comprises at least two wing bodies which are spirally arranged around the axis, and the upper ends of the wing bodies are provided with multi-groove diamond compacts or toothless diamond compacts; a chip removal groove part is arranged at the part, connected with the drill handle part, of the lower part of the wing body, and comprises a chip removal groove A and a chip removal groove B which are both arc-shaped, wherein the chip removal groove A extends downwards from the lower part of the wing body at the front end of the multi-groove diamond composite sheet or the toothless diamond composite sheet, and the chip removal groove B extends downwards from the tail part of the chip removal groove A in a spiral manner; a water passage which penetrates through the drill shank part, the chip removal groove part and the center of the drill base part is arranged in the anchor rod drill bit, and a connecting thread is arranged in the water passage; the opening of the water passage between the wing bodies is a square opening or a round opening.
Preferably, the upper ends of the wing bodies are all provided with multi-groove diamond compacts; or the multi-groove diamond compacts and the toothless diamond compacts are arranged at the upper end of the wing body at intervals.
Preferably, the handle and the plurality of wings are connected into a whole, the handle is internally of a hollow structure, mounting threads are arranged in the tail of the handle, the plurality of wings surround the front end of the handle, a main feeding composite sheet and a reaming composite sheet are arranged on each wing, the reaming composite sheet is positioned on the outer edge of each wing, the main feeding composite sheet is positioned on the inner side of the reaming composite sheet, flushing holes communicated with the inside of the handle are formed in the front end face of the handle, and the number of the reaming composite sheets is at least two and the front and the back of the reaming composite sheets are arranged on the same circumference; a convex auxiliary wing is arranged on the front end surface of the handle between the flushing holes, and an auxiliary composite sheet is arranged on the auxiliary wing; the part of the side surface of the upper end of the handle, which is positioned between the wings, is provided with an auxiliary flushing hole; the main feeding composite sheet is a multi-groove diamond composite sheet or a toothless diamond composite sheet, the reaming composite sheet is a multi-groove diamond composite sheet or a toothless diamond composite sheet, and the auxiliary composite sheet is a multi-groove diamond composite sheet or a toothless diamond composite sheet.
Preferably, the main feeding composite sheet is a multi-groove diamond composite sheet, the reaming composite sheet is a multi-groove diamond composite sheet, and the auxiliary composite sheet is a multi-groove diamond composite sheet; or one part of the main feeding composite sheets on the plurality of wings are multi-groove diamond composite sheets, the other part of the main feeding composite sheets are toothless diamond composite sheets, and the multi-groove diamond composite sheets and the toothless diamond composite sheets are distributed at intervals; one part of the reaming composite sheets on the plurality of wings is a multi-groove diamond composite sheet, the other part of the reaming composite sheets is a toothless diamond composite sheet, and the multi-groove diamond composite sheet and the toothless diamond composite sheet are distributed at intervals; one part of the auxiliary composite sheet on the auxiliary wing is a multi-groove diamond composite sheet, the other part is a toothless diamond composite sheet, and the multi-groove diamond composite sheet and the toothless diamond composite sheet are distributed at intervals.
Preferably, the device comprises a handle and a plurality of wings which are connected into a whole, wherein a core taking hole is formed in the middle of the handle, mounting threads are formed in the tail of the handle, the wings surround the front end of the handle, a main feeding composite sheet and a reaming composite sheet are arranged on the wings, the reaming composite sheet is located on the outer edges of the wings, the main feeding composite sheet is located on the inner side of the reaming composite sheet, and the number of the reaming composite sheets is at least two and the front and the back of the reaming composite sheets are arranged on the same circumference; the main feeding composite sheet is a multi-groove diamond composite sheet or a toothless diamond composite sheet, and the reaming composite sheet is a multi-groove diamond composite sheet or a toothless diamond composite sheet.
Preferably, the main feeding composite sheets are all multi-groove diamond composite sheets, and the reaming composite sheets are all multi-groove diamond composite sheets; or one part of the main feeding composite sheets on the plurality of wings are multi-groove diamond composite sheets, the other part of the main feeding composite sheets are toothless diamond composite sheets, and the multi-groove diamond composite sheets and the toothless diamond composite sheets are distributed at intervals; one part of the reaming composite sheets on the plurality of wings are multi-groove diamond composite sheets, the other part of the reaming composite sheets are toothless diamond composite sheets, and the multi-groove diamond composite sheets and the toothless diamond composite sheets are distributed at intervals.
The invention has the beneficial technical effects that: the invention relates to a multi-groove diamond composite sheet, an anchor rod drill bit, a coreless drill bit and a core drill bit, wherein the diamond composite sheet comprises a hard alloy substrate and a diamond layer, the edge of the diamond layer is provided with separating grooves, so that a plurality of serrated cutting edges are formed on the edge of a diamond, the separating grooves prevent cracks from expanding in the whole diamond layer, and when the diamond layer is impacted by the same size, the falling area of the diamond layer is greatly reduced, the service life of the diamond composite sheet is greatly prolonged, and meanwhile, the cutting edges among the separating grooves release the internal stress in the diamond layer, so that the diamond layer and the substrate are prevented from layering; the serrated cutting edges formed at intervals by the separation grooves can reduce the contact area between the cutting ends and the circumferential surface of the multi-groove diamond compact and the stratum, and increase the penetration capacity of the drill bit; the end face of the cutting end is designed into a drum-shaped surface with the area larger than that of the end face of the bottom end, so that the whole composite sheet is in an irregular cylindrical anisotropic structure, the friction force between the rear part of the circumferential surface of the composite sheet substrate and the stratum is reduced, and the mechanical drilling speed of the drill bit can be improved.
Drawings
FIG. 1 is a schematic perspective view of a multi-groove diamond compact (the separation grooves are radial slope-shaped rectangular grooves);
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic perspective view of a multi-groove diamond compact (the separation grooves are non-radial slope-shaped rectangular grooves);
FIG. 5 is a top view of FIG. 4;
FIG. 6 is a cross-sectional view B-B of FIG. 5;
FIG. 7 is a schematic perspective view of a multi-groove diamond compact (the separation groove is a trapezoidal groove vertically penetrating through the multi-groove diamond compact);
FIG. 8 is a top view of FIG. 7;
FIG. 9 is a cross-sectional view B-B of FIG. 8;
FIG. 10 is a front view of one construction of a rock bolt bit;
FIG. 11 is a left side view of FIG. 10;
FIG. 12 is a top view of FIG. 10;
FIG. 13 is a top plan view of another configuration of a rock bolt bit;
figure 14 is a front view of one configuration of a coreless drill;
FIG. 15 is a top view of FIG. 14;
figure 16 is a top view of another configuration of a coreless drill;
FIG. 17 is a front view of one configuration of a core drill bit;
FIG. 18 is a top view of FIG. 17;
FIG. 19 is a top view of another configuration of a core bit;
in the figure: in fig. 1-9, 11, diamond layer, 12, hard alloy base body, 111, cutting edge, 13, cut away inwards along radial direction to form slope-shaped rectangular groove, 14, cutting end face of diamond layer, 15, bottom end face of diamond layer, 16, cut away inwards along radial direction to form slope-shaped trapezoidal groove, 17, cut away from bottom end face of diamond layer upwards to form trapezoidal groove.
In fig. 10-13, 18 is drill handle part, 19 is chip removal groove part, 20 is drill base part, 21 is water passage, 22 is connecting screw thread, 23 is chip removal groove B, 24 is chip removal groove A, 25 is rectangular flat hole, 26 is wing body, 27 is diamond compact.
In fig. 14-16, 28, handle, 29, wings, 30, main feed composite sheet, 31, reaming composite sheet, 32, flushing hole, 33, auxiliary flushing hole, 34, auxiliary wings, 35, auxiliary composite sheet.
In fig. 17-19, 36 handle, 37 wings, 38 main feed composite sheet, 39 ream composite sheet, 40 coring hole, 41 installation threads.
Detailed Description
The first embodiment is as follows: referring to fig. 1 to 9, the multi-groove diamond compact includes a hard alloy substrate and a diamond layer, and is characterized in that the diamond layer is sintered on the hard alloy substrate at high temperature and high pressure, the bottom end surface of the diamond layer is a plane combined with the hard alloy layer, the cutting end surface of the diamond layer is a truncated cone-shaped drum profile, a plurality of separation grooves which are distributed adjacently are arranged on the edge of the cutting end surface of the diamond layer, a cutting edge is formed between the adjacent separation grooves, and the central angle corresponding to the cutting edge is alpha which is not less than 20 °.
The separation groove is a slope-shaped rectangular groove or a trapezoid groove which is cut from the circumferential surface of the diamond layer inwards along the radial direction, the width of the rectangular groove or the trapezoid groove formed on the circumferential surface of the diamond layer is L which is more than or equal to 0.5mm, the included angle between the slope surface of the rectangular groove or the trapezoid groove and the bottom end surface of the diamond layer is beta which is less than or equal to 60 degrees. FIGS. 1-3 illustrate embodiments in which the separation grooves are rectangular grooves cut radially inward from the circumferential surface of the diamond layer to form a ramp shape;
the separation groove is a rectangular groove or a trapezoidal groove which is formed by cutting off the circumferential surface of the diamond layer in a deviating and radially inward manner to form a slope, the width of the rectangular groove or the trapezoidal groove formed on the circumferential surface of the diamond layer is M, M is more than or equal to 0.5mm, the included angle between the slope surface of the rectangular groove or the trapezoidal groove and the bottom end surface of the diamond layer is delta, and delta is less than or equal to 60 degrees. FIGS. 4-6 illustrate embodiments in which the separation grooves are formed as ramp-shaped rectangular grooves cut radially inward away from the circumferential surface of the diamond layer;
the separation groove is a rectangular groove or a trapezoidal groove formed by upwards penetrating and cutting the bottom end face of the diamond layer, the width of the rectangular groove or the trapezoidal groove formed on the circumferential face of the diamond layer is N, N is more than or equal to 0.5mm, the depth of the rectangular groove or the trapezoidal groove is H, and H is more than or equal to 1 mm. Figures 7-9 show in this embodiment a schematic view of the separation grooves as trapezoidal grooves cut through the diamond layer from the bottom end face upwards;
the edge of the diamond layer is provided with the separation grooves, so that a plurality of serrated cutting edges are formed on the edge of the diamond, the separation grooves prevent cracks from expanding in the whole diamond layer, the falling area of the diamond layer is greatly reduced when the diamond layer is impacted with the same size, the service life of the diamond composite sheet is greatly prolonged, and meanwhile, the cutting edges among the separation grooves release internal stress in the diamond layer, so that the diamond layer and a substrate are prevented from being layered; the serrated cutting edges formed at intervals by the separation grooves can reduce the contact area between the cutting ends and the circumferential surface of the multi-groove diamond compact and the stratum, and increase the penetration capacity of the drill bit; the end face of the cutting end is designed into a drum-shaped surface with the area larger than that of the end face of the bottom end, so that the whole composite sheet is in an irregular cylindrical anisotropic structure, the friction force between the rear part of the circumferential surface of the composite sheet substrate and the stratum is reduced, and the mechanical drilling speed of the drill bit can be improved.
Example two: referring to fig. 10 to 12, an anchor drill bit using the multi-fluted diamond compact according to the first embodiment includes a drill shank portion and a drill base portion formed integrally, the drill base portion is disposed at an upper portion of the drill shank portion, the drill base portion includes at least two wing bodies spirally arranged around an axis, and the diamond compact is mounted at upper ends of the wing bodies; a chip removal groove part is arranged at the position, connected with the drill handle part, of the lower part of the wing body, and comprises a chip removal groove A and a chip removal groove B which are both arc-shaped, wherein the chip removal groove A extends downwards from the lower part of the wing body at the front end of the diamond composite sheet in a spiral mode, and the chip removal groove B extends downwards from the tail part of the chip removal groove A in a spiral mode; a water passage which runs through the drill shank part, the chip removal groove part and the center of the drill base part is arranged in the anchor rod drill bit, and a connecting thread is arranged in the water passage; the opening of the water passage between the wing bodies is a circular opening. The diamond composite sheets are all multi-groove diamond composite sheets.
Example three: referring to fig. 13, the third embodiment is substantially the same as the second embodiment, and the same parts are not repeated, except that: the diamond compact is a multi-groove diamond compact or a toothless diamond compact, and the multi-groove diamond compact and the toothless diamond compact are arranged at the upper end of the wing body at intervals.
Example four: referring to fig. 14 to 15, a coreless drill bit using the multi-grooved diamond compact of the first embodiment includes a handle and a plurality of wings, the handle is hollow, a mounting thread is provided in the tail of the handle, the plurality of wings surround the front end of the handle, each wing is provided with a main feeding compact and a reaming compact, the reaming compact is located on the outer edge of the wing, the main feeding compact is located on the inner side of the reaming compact, the front end face of the handle is provided with at least two flushing holes communicated with the inside of the handle, and the reaming compacts are arranged on the same circumference in a front-to-back manner; a convex auxiliary wing is arranged on the front end surface of the handle between the flushing holes, and an auxiliary composite sheet is arranged on the auxiliary wing; the part of the side surface of the upper end of the handle between the wings is provided with an auxiliary flushing hole; the main feeding composite sheet, the reaming composite sheet and the auxiliary composite sheet are multi-groove diamond composite sheets.
Example five: referring to fig. 16, the fifth embodiment is substantially the same as the fourth embodiment, and the description of the same parts is omitted, except that: one part of the main feeding composite sheets on the plurality of wings are multi-groove diamond composite sheets, the other part of the main feeding composite sheets are toothless diamond composite sheets, and the multi-groove diamond composite sheets and the toothless diamond composite sheets are distributed at intervals; one part of the reaming composite sheets on the plurality of wings is a multi-groove diamond composite sheet, the other part of the reaming composite sheets is a toothless diamond composite sheet, and the multi-groove diamond composite sheet and the toothless diamond composite sheet are distributed at intervals; one part of the auxiliary composite sheet on the auxiliary wing is a multi-groove diamond composite sheet, the other part is a toothless diamond composite sheet, and the multi-groove diamond composite sheet and the toothless diamond composite sheet are distributed at intervals.
Example six: referring to fig. 17 to 18, a coring bit using the multi-groove diamond compact according to the first embodiment includes a handle and a plurality of wings connected to each other, the handle has a coring hole in the middle, the tail of the handle has a mounting thread, the plurality of wings surround the front end of the handle, the wings have a main feeding compact and a reaming compact, the reaming compact is located at the outer edge of the wings, the main feeding compact is located inside the reaming compact, and at least two reaming compacts are arranged on the same circumference in the front and back direction; the main feeding composite sheet and the reaming composite sheet are multi-groove diamond composite sheets.
Example seven: referring to fig. 19, the seventh embodiment is substantially the same as the sixth embodiment, and the description of the same parts is omitted, except that: one part of the main feeding composite sheets on the plurality of wings are multi-groove diamond composite sheets, the other part of the main feeding composite sheets are toothless diamond composite sheets, and the multi-groove diamond composite sheets and the toothless diamond composite sheets are distributed at intervals; one part of the reaming composite sheets on the plurality of wings are multi-groove diamond composite sheets, the other part of the reaming composite sheets are toothless diamond composite sheets, and the multi-groove diamond composite sheets and the toothless diamond composite sheets are distributed at intervals.
Claims (10)
1. The multi-groove diamond composite sheet comprises a hard alloy substrate and a diamond layer and is characterized in that the diamond layer is sintered on the hard alloy substrate at high temperature and high pressure, the bottom end face of the diamond layer is a plane combined with the hard alloy layer, the cutting end face of the diamond layer is a truncated cone-shaped drum profile, a plurality of separation grooves which are distributed adjacently are arranged on the edge of the cutting end face of the diamond layer, a cutting edge is formed between every two adjacent separation grooves, the central angle corresponding to the cutting edge is alpha, and the alpha is more than or equal to 20 degrees.
2. The multi-fluted diamond compact of claim 1, wherein: the separation groove is a slope-shaped rectangular groove or a trapezoid groove which is cut from the circumferential surface of the diamond layer inwards along the radial direction, the width of the rectangular groove or the trapezoid groove formed on the circumferential surface of the diamond layer is L which is more than or equal to 0.5mm, the included angle between the slope surface of the rectangular groove or the trapezoid groove and the bottom end surface of the diamond layer is beta which is less than or equal to 60 degrees.
3. The multi-fluted diamond compact of claim 1, wherein: the separation groove is a rectangular groove or a trapezoidal groove which is formed by cutting off the circumferential surface of the diamond layer in a deviating and radially inward manner to form a slope, the width of the rectangular groove or the trapezoidal groove formed on the circumferential surface of the diamond layer is M, M is more than or equal to 0.5mm, the included angle between the slope surface of the rectangular groove or the trapezoidal groove and the bottom end surface of the diamond layer is delta, and delta is less than or equal to 60 degrees.
4. The multi-fluted diamond compact of claim 1, wherein: the separation groove is a rectangular groove or a trapezoidal groove formed by upwards penetrating and cutting the bottom end face of the diamond layer, the width of the rectangular groove or the trapezoidal groove formed on the circumferential face of the diamond layer is N, N is more than or equal to 0.5mm, the depth of the rectangular groove or the trapezoidal groove is H, and H is more than or equal to 1 mm.
5. An anchor rod drill bit using the multi-groove diamond compact of claim 1, which comprises a drill bit part and a drill bit base part which are integrally formed, wherein the drill bit base part is arranged at the upper part of the drill bit part, the drill bit base part comprises at least two wing bodies which are spirally arranged around an axis, and the upper ends of the wing bodies are provided with the multi-groove diamond compact or the toothless diamond compact; a chip removal groove part is arranged at the part, connected with the drill handle part, of the lower part of the wing body, and comprises a chip removal groove A and a chip removal groove B which are both arc-shaped, wherein the chip removal groove A extends downwards from the lower part of the wing body at the front end of the multi-groove diamond composite sheet or the toothless diamond composite sheet, and the chip removal groove B extends downwards from the tail part of the chip removal groove A in a spiral manner; a water passage which penetrates through the drill shank part, the chip removal groove part and the center of the drill base part is arranged in the anchor rod drill bit, and a connecting thread is arranged in the water passage; the opening of the water passage between the wing bodies is a square opening or a round opening.
6. The rock bolt bit of claim 5, wherein the upper end of the wing body is provided with a multi-groove diamond compact; or the multi-groove diamond compacts and the toothless diamond compacts are arranged at the upper end of the wing body at intervals.
7. A coreless drill bit using the multi-groove diamond composite sheet of claim 1, which is characterized by comprising a handle and a plurality of wings which are connected into a whole, wherein the inside of the handle is of a hollow structure, mounting threads are arranged in the tail part of the handle, the plurality of wings surround the front end of the handle, a main feeding composite sheet and a reaming composite sheet are arranged on each wing, the reaming composite sheets are positioned on the outer edges of the wings, the main feeding composite sheet is positioned on the inner side of the reaming composite sheet, flushing holes communicated with the inside of the handle are arranged on the front end surface of the handle, and the reaming composite sheets are at least two and are arranged on the same circumference in the front and back directions; a convex auxiliary wing is arranged on the front end surface of the handle between the flushing holes, and an auxiliary composite sheet is arranged on the auxiliary wing; the part of the side surface of the upper end of the handle, which is positioned between the wings, is provided with an auxiliary flushing hole; the main feeding composite sheet is a multi-groove diamond composite sheet or a toothless diamond composite sheet, the reaming composite sheet is a multi-groove diamond composite sheet or a toothless diamond composite sheet, and the auxiliary composite sheet is a multi-groove diamond composite sheet or a toothless diamond composite sheet.
8. The coreless drill bit of claim 7 wherein the primary feed composite sheet is a multi-fluted diamond composite sheet, the reaming composite sheet is a multi-fluted diamond composite sheet, and the auxiliary composite sheet is a multi-fluted diamond composite sheet; or one part of the main feeding composite sheets on the plurality of wings are multi-groove diamond composite sheets, the other part of the main feeding composite sheets are toothless diamond composite sheets, and the multi-groove diamond composite sheets and the toothless diamond composite sheets are distributed at intervals; one part of the reaming composite sheets on the plurality of wings is a multi-groove diamond composite sheet, the other part of the reaming composite sheets is a toothless diamond composite sheet, and the multi-groove diamond composite sheet and the toothless diamond composite sheet are distributed at intervals; one part of the auxiliary composite sheet on the auxiliary wing is a multi-groove diamond composite sheet, the other part is a toothless diamond composite sheet, and the multi-groove diamond composite sheet and the toothless diamond composite sheet are distributed at intervals.
9. A core bit using the multi-groove diamond composite sheet as defined in claim 1, which is characterized by comprising a handle and a plurality of wings which are connected into a whole, wherein a core taking hole is arranged in the middle of the handle, mounting threads are arranged at the tail of the handle, the plurality of wings are arranged at the front end of the handle in a surrounding manner, a main feeding composite sheet and a reaming composite sheet are arranged on the wings, the reaming composite sheet is positioned at the outer edge of the wings, the main feeding composite sheet is positioned at the inner side of the reaming composite sheet, at least two reaming composite sheets are arranged on the same circumference in a front-back manner; the main feeding composite sheet is a multi-groove diamond composite sheet or a toothless diamond composite sheet, and the reaming composite sheet is a multi-groove diamond composite sheet or a toothless diamond composite sheet.
10. The core-extracting drill bit as set forth in claim 9, wherein said main feeding composite sheet is a multi-groove diamond composite sheet, and said reaming composite sheet is a multi-groove diamond composite sheet; or one part of the main feeding composite sheets on the plurality of wings are multi-groove diamond composite sheets, the other part of the main feeding composite sheets are toothless diamond composite sheets, and the multi-groove diamond composite sheets and the toothless diamond composite sheets are distributed at intervals; one part of the reaming composite sheets on the plurality of wings are multi-groove diamond composite sheets, the other part of the reaming composite sheets are toothless diamond composite sheets, and the multi-groove diamond composite sheets and the toothless diamond composite sheets are distributed at intervals.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020110866970 | 2020-10-12 | ||
| CN202011086697 | 2020-10-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113846974A true CN113846974A (en) | 2021-12-28 |
Family
ID=78972832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011088111.4A Pending CN113846974A (en) | 2020-10-12 | 2020-10-13 | Multi-groove diamond composite sheet, anchor rod drill bit, coreless drill bit and core drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113846974A (en) |
-
2020
- 2020-10-13 CN CN202011088111.4A patent/CN113846974A/en active Pending
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