CN212958479U - Multilayer diamond coring bit - Google Patents
Multilayer diamond coring bit Download PDFInfo
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- CN212958479U CN212958479U CN202020157410.8U CN202020157410U CN212958479U CN 212958479 U CN212958479 U CN 212958479U CN 202020157410 U CN202020157410 U CN 202020157410U CN 212958479 U CN212958479 U CN 212958479U
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Abstract
The utility model provides a multilayer diamond coring bit, which comprises a bit steel body, wherein the bit steel body is provided with a through hole along the axial direction, thereby forming a cylindrical hollow structure; one end of the drill steel body is provided with a connecting thread, the other end of the drill steel body is provided with a block mounting head, the end surface of the block mounting head is circumferentially provided with a plurality of diamond blocks, and each diamond block is obliquely arranged in the circumferential direction of the block connector, so that an eccentric tooth structure taking the center of the hollow structure as the center is formed; the outer wall of the block mounting head is also provided with a plurality of layers of diamond blocks, a water gap is arranged between each layer of diamond block, and the inner side of the water gap is provided with a water-proof sheet; the utility model provides a scheme has improved the life of drill bit, and the row's thick liquid of coring bit is more unobstructed for diamond coring bit cutting drilling rate is faster, and torsional strength and shock resistance are stronger, not only can increase substantially the work efficiency of drill bit, do the working strength and the life-span that improve the drill bit.
Description
Technical Field
The utility model belongs to diamond coring bit field, concretely relates to multilayer diamond coring bit.
Background
The diamond coring bit is mainly used for obtaining hard formation cores of engineering exploration, geological exploration, mineral exploration, hydrology, coal field geological survey and the like; in hard and medium-weak abrasive stratum, the abrasion of the matrix of the conventional diamond-impregnated bit is low, and the diamond is difficult to cut and extract rock, so the drilling efficiency is extremely low.
In the prior art, in order to improve the mechanical drilling speed of the drill bit, the matrix formula is reasonably improved, and the specific pressure of the drill bit can be optimized and increased through the cutting structure of the drill bit, so that the drilling efficiency is improved; most manufacturers design the drill bit as a gear drill bit, but the cutting teeth of the drill bit are usually designed to be narrow and short and are concentrically arranged with the inner diameter and the outer diameter of the drill bit, the working layer of the strip gear is quickly ground flat, so that the drill bit cannot continuously play a role in efficient drilling, and the service life of the drill bit is short.
Based on the technical problems in the diamond core bit, no relevant solution exists; there is therefore a pressing need to find effective solutions to the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the weak point that exists among the above-mentioned technique, provide a multilayer diamond coring bit, aim at solving one of the problem of current diamond coring bit inefficiency, short-lived.
The utility model provides a multilayer diamond coring bit, which comprises a bit steel body, wherein the bit steel body is provided with a through hole along the axial direction, thereby forming a cylindrical hollow structure; one end of the drill steel body is provided with a connecting thread, the other end of the drill steel body is provided with a positioner connector, a plurality of diamond positioner connectors are arranged on the end surface of the positioner connector along the circumferential direction, and each diamond positioner is obliquely arranged in the circumferential direction of the positioner connector, so that an eccentric tooth structure taking the center of a hollow structure circle as the center is formed; still be equipped with multilayer diamond child piece on the outer wall of child piece connector, be equipped with the mouth of a river between each layer diamond child piece, the inboard at mouth of a river is equipped with water proof piece.
Furthermore, a positioner block embedded groove is formed in the positioner block connector, the positioner block embedded groove penetrates through the outer wall of the drill steel body and is arranged in a multilayer mode along the vertical direction, and the diamond positioner blocks are welded on the end face of the positioner block connector and in the positioner block embedded groove along the vertical direction; the water gap and the tire block embedded groove are arranged in parallel and are arranged in a multilayer mode in the vertical direction.
Furthermore, a water gap groove is formed between the adjacent diamond tire blocks on the end face of the tire block connector, the water gap groove penetrates through the wall face of the tire block connector in an inclined mode, an inner water groove is arranged on the inner side of the water gap groove, and an outer water groove is arranged on the outer side of the water gap groove.
Furthermore, a water gap is arranged between the adjacent diamond mould blocks on the outer wall of the mould block connector, an inner water tank is arranged on the inner side of the water gap, and an outer water tank is arranged on the outer side of the water gap; and/or the water-proof sheet comprises a plurality of water-proof sheets, and each water-proof sheet is arranged in the water opening along the vertical direction and is connected with the inner wall of the drill steel body.
Further, the water gap comprises an outer water channel groove and an inner water channel groove, and the water gap and the water channel groove are vertically connected along the outer wall of the drill steel body; and/or an anti-torsion back lining is formed between the adjacent diamond blocks on the end face of the block connector, and the orthographic projection of the anti-torsion back lining along the horizontal direction is a right triangle.
Furthermore, a height difference beta is formed between the adjacent diamond blocks on the end surface of the block connector, and the height difference beta is not less than 0mm and not more than 20 mm; and/or a height difference gamma is formed on the bottom surface between the adjacent diamond mould blocks or water gaps on the outer wall of the mould block connector, and the height difference gamma is more than or equal to 0mm and less than or equal to 27 mm; and/or a height difference delta is formed on the bottom surface between the lowest layer of adjacent diamond blocks or water gaps on the wall surface of the block connector, and the height difference gamma is larger than or equal to 0mm and smaller than or equal to 13 mm.
Furthermore, a diameter protection strip is arranged between the water gap and the tire block embedding groove.
Further, the diamond bed block comprises a bed block working layer and a bed block non-working layer; the carcass of the working layer of the block contains cutting materials and pre-alloyed powder, and the non-working layer of the block contains no cutting materials; between two adjacent layers of diamond bed blocks, the bottom surface of the working layer of the diamond bed block on the upper layer is higher than the top surface of the non-working layer of the diamond bed block on the lower layer; the cutting material is diamond.
Further, the inclination angle alpha between the adjacent diamond blocks is the same; and/or the top of the diamond block is a conical cutting tooth; and/or the diamond blocks are strip-shaped eccentric teeth.
Accordingly, the present disclosure also provides a method of manufacturing a multilayer diamond core bit, the method comprising:
s1: turning the steel body: machining the inner wall and the outer wall of the steel body by utilizing a lathe so as to enable the steel body to form a cylindrical hollow structure; in the processing process, the inner diameter of the part below the bottom layer block embedded groove of the inner wall of the through hole of the steel body is smaller than the inner diameter of the upper half part, so that a boss capable of placing a graphite mold is formed;
s2: milling the steel body: inputting the three-dimensional model of the coring bit into a numerical control machine tool, and processing a steel body by using the numerical control machine tool; the processing part comprises a tire block connector, an anti-torque back lining, a tire block embedded groove, a water gap groove, an outer water groove, a gauge protection strip embedded groove and a water gap; in the processing process, the block embedded groove is of a window-shaped structure penetrating through the steel body, and the water gap part is 1-2mm away from the through hole part to form a thin-wall structure, so that an initial structure of the water-proof sheet is formed;
s3: manufacturing a diamond matrix block: preparing a diamond matrix block by the steps of burdening, charging and burning; the diamond tire block comprises a tire block working layer and a tire block non-working layer, a tire body of the tire block working layer contains cutting materials and pre-alloy powder, the tire block non-working layer does not contain the cutting materials, and the cutting materials are diamonds; in the manufacturing and forming process, the top of the diamond block is of a conical cutting tooth structure;
s4: processing of the graphite mold: processing and molding two graphite molds with different sizes, wherein the diameter size difference of the two graphite molds is 3mm to 5 mm; the diameter of the graphite mold with smaller size is the same as that of the steel body through hole, and the height of the graphite mold with smaller size is the distance from the top surface of the boss on the inner wall of the steel body to the top of the connecting head of the steel body block;
s5: welding the diamond blocks and the gauge protection strips: placing a graphite mould with smaller size in the through hole of the steel body and falling on the boss; placing the diamond block in the end face of the steel block connector and the block embedding groove; placing a graphite mould with larger size at the top end, and assembling a gauge protection strip; respectively welding and fixing the diamond blocks in a high frequency;
s6: reprocessing of the steel body: and processing connecting threads of the through hole and the inner wall in the steel body.
Further, the manufacturing method further includes the following processes: s7: processing of the inner water tank: and carrying out linear cutting on the inner wall of the steel body on the linear cutting machining bed to form the inner water tank.
Further, the manufacturing method further includes the following processes:
s8: electric spark machining of the water-proof sheet: carrying out electric spark machining by utilizing two kinds of copper electrode sheets prepared in advance; and cutting the thin-wall structure of the water-insulating sheet into a U-shaped gap in the lateral direction, wherein only the top edge is connected with the inner wall of the through hole of the steel body to form the water-insulating sheet.
Further, the manufacturing method further includes the following processes:
s9: deep processing of the drill bit: and removing an oxide layer on the surface of the coring bit, and performing finish machining on the grinding machine.
The utility model provides a scheme has improved the life of drill bit, and the row's thick liquid of coring bit is more unobstructed for diamond coring bit cutting drilling rate is faster, and torsional strength and shock resistance are stronger, not only can increase substantially the work efficiency of drill bit, do the working strength and the life-span that improve the drill bit.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The present invention will be further explained with reference to the accompanying drawings:
FIG. 1 is a front view of a multi-layer diamond coring bit of the present invention;
FIG. 2 is a front view of a multi-layer diamond coring bit of the present invention;
FIG. 3 is a top view of a multi-layer diamond coring bit of the present invention;
FIG. 4 is a second front view of the multi-layer diamond coring bit of the present invention;
FIG. 5 is an enlarged view of portion A of FIG. 4;
fig. 6 is a perspective view of the multi-layer diamond core bit of the present invention.
In the figure: 1. a drill steel body; 11. a tire block connector; 2. a diamond bed block; 21. a block non-working layer; 22. a block working layer; 3. an anti-torsion back lining; 4. a through hole; 5. a water gap groove; 51. an inner water tank; 52. an outer water tank; 6. a water-barrier sheet; 7. a gauge protection strip; 8. a tire block embedding groove; 9. a nozzle.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 to 6, the utility model provides a multi-layer diamond core bit, which comprises a bit steel body 1, wherein the bit steel body 1 is provided with a through hole 4 along the axial direction, thereby forming a cylindrical hollow structure; one end of the drill bit steel body 1 is provided with a connecting thread which is used for assembling and connecting the coring drill bit; the other end of the drill bit steel body is equipped with child piece connector 11, child piece connector 11 and 1 integrated into one piece of drill bit steel body to the increase of strength is equipped with a plurality of diamond child pieces 2 along circumference on the terminal surface of this child piece connector 11, and each diamond child piece 2 is the slope form and sets up in the week of child piece connector, thereby forms the eccentric tooth structure that uses the hollow structure centre of a circle as the center, specifically does: the plurality of diamond blocks 2 are obliquely distributed in the circumferential direction of the block connectors 11 and in the block embedding grooves 8 along the horizontal direction (namely the cross section direction of the block connectors 11), so that the cutting teeth of each diamond block 2 do not pass through the circle center of the cross section of the axial through hole 4 of the diamond block 2; meanwhile, the outer wall of the tire block connector 11 is also provided with a plurality of layers of diamond tire blocks 2, water gaps 9 are arranged between the diamond tire blocks 2, and the inner sides of the water gaps 9 are provided with water-proof sheets 6; the scheme that this application scheme provided has broken through the restriction that traditional coring bit work child is high, has improved matrix working layer by a wide margin, makes the life of drill bit increase at double, reduces the number of times of getting up and down to construction work efficiency has been improved.
Preferably, in combination with the above scheme, as shown in fig. 1 to 6, the block connector 11 is provided with a block embedding groove 8, the block embedding groove 8 penetrates through the outer wall of the drill steel body 1 and is arranged in multiple layers along the vertical direction, and the diamond blocks 2 are welded on the end face of the block connector and in the block embedding groove 8 along the vertical direction; specifically, the diamond block 2 is welded on the end face of the block connector 11 and in the block embedded groove 8 through high frequency in consideration of the construction environment of the drill, so that the connection strength and stability are improved; further, the water gap 9 is arranged in parallel with the block embedded groove 8 and is arranged in multiple layers along the vertical direction.
Preferably, in combination with the above solutions, as shown in fig. 1 to 6, a water gap groove 5 is formed between adjacent diamond blocks 2 on the end surface of the block connector 11, the water gap groove 5 penetrates the wall surface of the block connector 11 in an inclined manner, an inner water groove 51 is provided inside the water gap groove 5, and an outer water groove 52 is provided outside the water gap groove 5.
Preferably, in combination with the above solutions, as shown in fig. 1 to 6, a water gap 9 is provided between adjacent diamond blocks 2 on the outer wall of the block connector 11, an inner water tank 51 is also provided on the inner side of the water gap 9, and an outer water tank 52 is also provided on the outer side of the water gap 9; further, the water-stop sheet 6 includes a plurality of, and each water-stop sheet 6 sets up in mouth of a river 9 along vertical direction to be connected with the inner wall of drill steel body 1.
Preferably, in combination with the above scheme, as shown in fig. 1 to 6, the water gap 9 comprises an outer water channel groove and an inner water channel groove, and the water gap 9 and the water gap groove 5 are vertically connected along the outer wall of the drill steel body 1; further, an anti-torsion back lining 3 is formed between the adjacent diamond blocks 2 on the end face of the block connector 11, and the orthographic projection of the anti-torsion back lining 3 along the horizontal direction is a right triangle.
Preferably, in combination with the above scheme, as shown in fig. 1 to 6, a height difference β is formed between adjacent diamond blocks 2 on the end surface of the block connector 11, and the height difference β satisfies 0mm ≤ β ≤ 20 mm; furthermore, a height difference gamma is formed on the bottom surface between the adjacent diamond blocks 2 or the water gaps 9 on the outer wall of the block connector, and the height difference gamma is more than or equal to 0mm and less than or equal to 27 mm; furthermore, a height difference delta is formed on the bottom surface between the lowest layer of adjacent diamond blocks 2 or the water gap 9 on the wall surface of the block connector 11, and the height difference gamma is larger than or equal to 0mm and smaller than or equal to 13 mm.
Preferably, in combination with the above solution, as shown in fig. 1 to 6, a gauge strip 7 is arranged between the nozzle 9 and the block embedding groove 8, and the gauge strip 7 is used for reinforcing the outer gauge of the drill bit.
Preferably, in combination with the above, as shown in fig. 1 to 6, the diamond green tyre 2 comprises a green tyre working layer 22 and a green tyre non-working layer 21; the carcass of the working layer 22 of the block contains cutting materials and pre-alloyed powder, and the non-working layer 21 of the block contains no cutting materials; between two adjacent layers of diamond bed blocks 2, the bottom surface of the working layer of the diamond bed block 2 on the upper layer is higher than the top surface of the non-working layer of the diamond bed block 2 on the lower layer; the cutting material is diamond.
Preferably, in combination with the above, as shown in fig. 1 to 6, the inclination angle α between adjacent diamond blocks 2 is the same, i.e. the included angles a formed between the side edges of adjacent diamond blocks 2 are the same; the design is such that a plurality of diamond blocks 2 can be arranged into evenly distributed eccentric teeth; further, the top of the diamond block 2 is a conical cutting tooth; further, the diamond blocks are strip-shaped eccentric teeth.
Correspondingly, combine above-mentioned scheme, as shown in fig. 1 to 6, to the aforesaid the utility model provides a multilayer diamond core bit structure, this application scheme still provides a multilayer diamond core bit manufacturing approach, and this manufacturing approach includes following process:
s1: turning the steel body, wherein the steel body is the drill steel body 1: machining the inner wall and the outer wall of the steel body by utilizing a lathe so as to enable the steel body to form a cylindrical hollow structure; in the processing process, the inner diameter of the part below the bottom layer block embedded groove of the inner wall of the steel body through hole 4 is smaller than the inner diameter of the upper half part, so that a boss capable of placing a graphite mold is formed;
s2: milling the steel body: inputting the three-dimensional model of the coring bit into a numerical control machine tool, and processing a steel body by using the numerical control machine tool; the main processing part comprises a tire block connector 11, an anti-torque back lining 3, a tire block embedded groove 8, a water gap groove 5, an outer water groove 52, a gauge protection strip embedded groove and a water gap 9; in the processing process, the block embedded groove 8 is a window-shaped structure penetrating through the steel body, and the water gap 9 part is 1-2mm away from the through hole 4 part to form a thin-wall structure, so that an initial structure of the water-proof sheet 6 is formed;
s3: manufacturing a diamond matrix block: preparing a diamond matrix block by the steps of burdening, charging and burning; the diamond block 2 comprises a block working layer 22 and a block non-working layer 21, wherein a carcass of the block working layer 22 contains cutting materials and pre-alloyed powder, the block non-working layer 21 does not contain the cutting materials, and the cutting materials are diamonds; in the manufacturing and forming process, the top of the diamond block 2 is of a conical cutting tooth structure;
s4: processing of the graphite mold: processing and molding two graphite molds with different sizes, wherein the diameter size difference of the two graphite molds is 3mm to 5 mm; the diameter of the graphite mold with smaller size is the same as that of the steel body through hole, and the height of the graphite mold with smaller size is the distance from the top surface of the boss on the inner wall of the steel body to the top of the connecting head of the steel body block;
s5: welding the diamond blocks and the gauge protection strips: placing a graphite mould with smaller size in the through hole 4 of the steel body and falling on the boss; the diamond mould block 2 is sequentially placed in the end face of the steel mould block connector 11 and the mould block embedding groove 8; placing a graphite mould with larger size at the top end, and assembling a gauge strip 7; respectively welding and fixing the diamond blocks in a high frequency;
s6: reprocessing of the steel body: processing connecting threads on the inner wall of the through hole in the steel body or connecting threads on the outer wall of the steel body according to geological requirements;
s7: processing of the inner water tank: carrying out linear cutting on the inner wall of the steel body on a linear cutting machining bed to machine an inner water tank;
s8: electric spark machining of the water-proof sheet: carrying out electric spark machining by utilizing two kinds of copper electrode sheets prepared in advance; cutting the thin-wall structure of the water-proof sheet 6 into a U-shaped gap in the side direction, wherein only the top edge is connected with the inner wall of the through hole of the steel body to form the water-proof sheet; specifically, the length of a copper electrode slice is longer than the depth of a water gap, wherein the width of one copper electrode slice is the same as the length of the longest straight edge of the water gap, and the width of the other copper electrode slice is the same as the length of the shortest straight edge of the water gap;
s9: deep processing of the drill bit: and removing an oxide layer on the surface of the coring bit, and performing finish machining on the grinding machine.
The utility model provides a scheme has improved the life of drill bit, and the row's thick liquid of coring bit is more unobstructed for diamond coring bit cutting drilling rate is faster, and torsional strength and shock resistance are stronger, not only can increase substantially the work efficiency of drill bit, do the working strength and the life-span that improve the drill bit.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any way. The technical solutions of the present invention can be used by anyone skilled in the art to make many possible variations and modifications to the technical solution of the present invention, or to modify equivalent embodiments with equivalent variations, without departing from the scope of the technical solution of the present invention. Therefore, any modification, equivalent change and modification of the above embodiments according to the present invention are all within the protection scope of the present invention.
Claims (7)
1. The multilayer diamond coring bit is characterized by comprising a bit steel body (1), wherein the bit steel body (1) is of a cylindrical hollow structure; one end of the drill steel body (1) is provided with a connecting thread, the other end of the drill steel body is provided with a positioner connector (11), a plurality of diamond positioner connectors (2) are arranged on the end face of the positioner connector (11) along the circumferential direction, and the diamond positioner connectors (2) are obliquely arranged on the circumferential direction of the positioner connector, so that an eccentric tooth structure taking the center of the hollow structure as the center is formed; still be equipped with multilayer diamond child piece (2) on the outer wall of child piece connector, each layer be equipped with mouth of a river (9) between diamond child piece (2), the inboard of mouth of a river (9) is equipped with water proof piece (6).
2. The multilayer diamond coring bit of claim 1, wherein the block connector (11) is provided with block embedding grooves (8), the block embedding grooves (8) penetrate through the outer wall of the bit steel body (1) and are arranged in a multilayer manner along the vertical direction, and the diamond blocks (2) are welded on the end face of the block connector and in the block embedding grooves (8) along the vertical direction; the water gap (9) and the tire block embedded groove (8) are arranged in parallel and are arranged in a multilayer mode in the vertical direction.
3. The multilayer diamond coring bit of claim 1, wherein a water gap groove (5) is formed between adjacent diamond blocks (2) on the end surface of the block connector, the water gap groove (5) penetrates through the wall surface of the block connector in an inclined manner, an inner water groove (51) is arranged on the inner side of the water gap groove (5), and an outer water groove (52) is arranged on the outer side of the water gap groove (5);
a water gap (9) is formed between the adjacent diamond mould blocks (2) on the outer wall of the mould block connector, an inner water tank (51) is arranged on the inner side of the water gap (9), and an outer water tank (52) is arranged on the outer side of the water gap (9); and/or the water-proof sheets (6) comprise a plurality of water-proof sheets, and each water-proof sheet (6) is arranged in the water gap (9) along the vertical direction and is connected with the inner wall of the drill steel body (1).
4. The multilayer diamond core bit according to claim 3, characterized in that the nozzle (9) comprises an outer and an inner channel, the nozzle (9) and the nozzle channel (5) being vertically connected along the outer wall of the bit steel body (1); and/or an anti-torsion back lining (3) is formed between the adjacent diamond blocks (2) on the end face of the block connector, and the orthographic projection of the anti-torsion back lining (3) along the horizontal direction is a right triangle.
5. The multilayer diamond core bit according to claim 1, characterized in that a height difference β is formed between adjacent diamond blocks (2) on the end surface of the block connector, wherein the height difference β satisfies 0mm ≤ β ≤ 20 mm; and/or a height difference gamma is formed on the bottom surface between the adjacent diamond blocks (2) or the water gaps (9) on the outer wall of the block connector, wherein the height difference gamma is more than or equal to 0mm and less than or equal to 27 mm; and/or a height difference delta is formed on the bottom surface between the lowest layer of the wall surface of the block connector and the adjacent diamond block (2) or the water gap (9), and the height difference delta is larger than or equal to 0mm and smaller than or equal to 13 mm.
6. Multilayer diamond core bit according to claim 2 characterized in that between the nozzle (9) and the block-embedding groove (8) there is a gauge strip.
7. The multilayer diamond core bit according to any of claims 1 to 6, characterized in that the inclination angle α between adjacent diamond blocks (2) is the same; and/or the top of the diamond block is a conical cutting tooth; and/or the diamond blocks are strip-shaped eccentric teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020157410.8U CN212958479U (en) | 2020-02-10 | 2020-02-10 | Multilayer diamond coring bit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020157410.8U CN212958479U (en) | 2020-02-10 | 2020-02-10 | Multilayer diamond coring bit |
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| CN212958479U true CN212958479U (en) | 2021-04-13 |
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| CN202020157410.8U Active CN212958479U (en) | 2020-02-10 | 2020-02-10 | Multilayer diamond coring bit |
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| CN (1) | CN212958479U (en) |
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