CN103437713A - Self-sharpening type ring tooth impregnated diamond drill bit - Google Patents
Self-sharpening type ring tooth impregnated diamond drill bit Download PDFInfo
- Publication number
- CN103437713A CN103437713A CN2013103432873A CN201310343287A CN103437713A CN 103437713 A CN103437713 A CN 103437713A CN 2013103432873 A CN2013103432873 A CN 2013103432873A CN 201310343287 A CN201310343287 A CN 201310343287A CN 103437713 A CN103437713 A CN 103437713A
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- China
- Prior art keywords
- cutting
- blocks
- cutting teeth
- drill bit
- teeth
- 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.)
- Granted
Links
- 229910003460 diamond Inorganic materials 0.000 title abstract description 14
- 239000010432 diamond Substances 0.000 title abstract description 14
- 230000036346 tooth eruption Effects 0.000 claims abstract description 54
- 238000005520 cutting process Methods 0.000 claims abstract description 51
- 210000000515 tooth Anatomy 0.000 claims description 15
- 239000011435 rock Substances 0.000 abstract description 17
- 230000007547 defect Effects 0.000 abstract description 2
- 230000035515 penetration Effects 0.000 description 7
- 238000005553 drilling Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005245 sintering Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910009043 WC-Co Inorganic materials 0.000 description 1
- ORILYTVJVMAKLC-UHFFFAOYSA-N adamantane Chemical compound C1C(C2)CC3CC1CC2C3 ORILYTVJVMAKLC-UHFFFAOYSA-N 0.000 description 1
- 229910001573 adamantine Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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Abstract
The invention provides a self-sharpening type ring tooth impregnated diamond drill bit with higher mechanical drill speed and long service life. According to the self-sharpening type ring tooth impregnated diamond drill bit, the defects that a traditional diamond drill bit for boring hard rock is not high in mechanical drill speed and is shorter in service life are overcome. The drill bit at least comprises a cylindrical drill bit body, wherein 2-16 arc-shaped cutting blocks are embedded in the top of the drill bit body along the circumferential direction; the heights of the cutting blocks are identical; cross sections of the cutting blocks are of sector shapes; the top surface of each cutting block is a work lip surface; 3-10 arc-shaped cutting teeth are arranged on each work lip surface; longitudinal sections of the cutting blocks provided with the cutting teeth are of comb shapes; top sides of the cutting teeth are arranged at sharp parts of the tops of the longitudinal sections; the circumference where the top side of any cutting tooth on each cutting block is positioned is concentric with the circumference where the cutting block is positioned; vertex angles of the cutting teeth are 50-120 degrees; in addition, the vertex angles of the cutting teeth on the different cutting blocks positioned on the same circumference are different from one another.
Description
Technical field
The invention provides a kind of at the medium hardness rock to the diamond bit that creeps into use in unusual solid rock, relate in particular to a kind of self-sharpening ring tooth diamond-impregnated bit, belong to the geological prospecting borehole field.
Background technology
In geological prospecting medium hardness and hard-rock boring, bit type selection generally all adopts diamond-impregnated bit at present.Because rock stratum belongs to medium hardness and solid rock, higher grade of drillability, and diamond bit shows diamond and is difficult for sword, rate of penetration is low and bit life is low feature in the hole basic skill or training makes process.Therefore in order to improve rate of penetration and bit life, can change the labial surface structure of conventional bit, propose a kind of new labial surface structure, to improve the effect of drill bit fractured rock at the bottom of hole.
The at present existing multiple diamond bit with pectination cutting teeth working lip structure, but its shortcoming is the rapid wearing of this pectination cutting teeth tooth top, and working lip changes, and forms plane.Because increased the contact area at the bottom of diamond and hole, require to carry fractured rock with large axle.The increase that axle carries can cause the increase of drill bit and drilling tool dynamic load, causes producing heel and toe wear.Therefore, the life-span of this diamond bit is not high, and rate of penetration is low.
Summary of the invention
The invention provides a kind of have higher rate of penetration, self-sharpening ring tooth diamond-impregnated bit that bit life is high, solved in existing hard-rock boring the not high and life-span defect on the low side of diamond bit rate of penetration.
Realize that the technical scheme that above-mentioned purpose of the present invention adopts is:
A kind of self-sharpening ring tooth diamond-impregnated bit, at least comprise and be bit body cylindraceous, the top of bit body is inlaid with the cutting blocks of 2-16 piece arc along the circumferential direction, the height of described cutting blocks is all identical, the cross section of cutting blocks is fan-shaped, the end face of cutting blocks is working lip, be equipped with curved 3-10 bar cutting teeth on described working lip, the longitudinal section that is provided with the cutting blocks of cutting teeth is pectination, sharp-pointed place, Shang top, longitudinal section is the top margin of cutting teeth, the take up an official post circumference at top margin place of a cutting teeth of cutting blocks is all concentric with the circumference at cutting blocks place, the drift angle of cutting teeth is 50-120 °, and the drift angle that is positioned at the cutting teeth on the different cutting blocks on same circumference is all not identical.
Described cutting blocks is provided with eight, and the arc length of eight cutting blocks is all identical.
Be equipped with 3 cutting teeths on described cutting blocks, be respectively interior cutting teeth, middle cutting teeth and outer cutting teeth, wherein the top margin of eight interior cutting teeths all is positioned on same circumference, and the top margin of eight middle cutting teeths all is positioned on same circumference, and the top margin of eight outer cutting teeths all is positioned on same circumference.
The carcass structure of above-mentioned drill bit adopts the hot-press method sintering to form by graphite jig at present.Inadequate with the pressure of this graphite jig sintering, can not make the diamond in carcass effectively be plated, the gap of generation makes abrasion resistance and the strength decreased of drill bit, has affected the raising of its scope of application, drilling efficiency and bit life index.
Therefore also provide a kind of method for preparing above-mentioned bit matrix in the present invention, specific as follows: WC-Co cold moudling in metal stamping and pressing together with the diamond powder, pressure is 700kg/cm
2above, strengthened so adamantine plating.After having colded pressing, drill bit for example, carries out impregnation sintering with binding metal (copper powder) in protective atmosphere (as vacuum or inert gas), can complete the preparation of bit matrix.Adopt the method can get rid of in drill bit the situation that has hole to exist, thereby increased the scope of application of the diamond bit of manufacturing, also improved the scuff resistance of drill bit.
Self-sharpening ring tooth diamond-impregnated bit provided by the present invention, because the drift angle of the cutting teeth on the different cutting blocks be positioned on same circumference is all not identical, the cutting teeth of cutting blocks is in drilling process like this, according to the rotating order of cutting, utilize the differential seat angle of the addendum angle on every cutting blocks to carry out broken hole bed rock stone, two sides of cutting teeth contact with rock, fractured rock, at the bottom of broken hole, the angle that is positioned at a cutting teeth on concentric circles is produced from sharp.Simultaneously, the top of the cutting teeth on different cutting blocks all is positioned on corresponding concentric circumference, has therefore improved the abrasion resistance on same circumference the line of cut, thereby has kept the given shape of drill bit working lip, until the carcass polishing.
The accompanying drawing explanation
The overall structure schematic diagram that Fig. 1 is self-sharpening ring tooth diamond-impregnated bit provided by the invention;
The longitudinal section sectional view that Fig. 2 is each cutting blocks.
In figure: 1-bit body, 2-cutting blocks, 3-cutting teeth.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is done to detailed specific description, but protection scope of the present invention is not limited to following examples.
The overall structure of self-sharpening ring tooth diamond-impregnated bit provided by the present invention as shown in Figure 1, at least comprise and be bit body 1 cylindraceous, the top of bit body 1 is inlaid with the cutting blocks 2 of 2-16 piece arc along the circumferential direction, diameter difference according to bit body 1, the quantity of the cutting blocks 2 be provided with is also different, is provided with in the present embodiment eight cutting blocks 2.The height of described cutting blocks 2 and arc length are all identical, and the cross section of cutting blocks 2 is fan-shaped, and the end face of cutting blocks 2 is working lip.
Be equipped with curved 3-10 bar cutting teeth 3 on working lip, in the present embodiment, be equipped with 3 cutting teeths 3 on cutting blocks 2, be respectively interior cutting teeth, middle cutting teeth and outer cutting teeth, the longitudinal section that is provided with the cutting blocks 2 of cutting teeth 3 is pectination, as shown in Figure 2, in Fig. 2, can learn, sharp-pointed place, Shang top, longitudinal section is the top margin of cutting teeth, the take up an official post circumference at top margin place of a cutting teeth of described cutting blocks is all concentric with the circumference at cutting blocks place, and, wherein the top margin of eight interior cutting teeths all is positioned on same circumference, article eight, the top margin of middle cutting teeth all is positioned on same circumference, article eight, the top margin of outer cutting teeth all is positioned on same circumference.
As shown in Figure 2, the drift angle of cutting teeth is 50-120 °, and the drift angle that is positioned at the cutting teeth on the different cutting blocks on same circumference is all not identical, as the drift angle of the interior cutting teeth on eight cutting blocks in the present embodiment is respectively: 30 °+25 °, 40 °+15 °, 30 °+30 °, 40 °+25 °, 30 °+35 °, 40 °+25 °, 30 °+40 °, 40 °+30 °.So, when drill bit is worked, the top wedging rock of cutting teeth, at the bottom of broken hole.Yi Qi both sides, the top fractured rock of cutting teeth forms new tooth top after its both sides are worn.New tooth top with two side fractured rock, forms new tooth top again, and the addendum angle that circulates according to this is from sharp, and the shape of labial surface is constant all the time, makes drill bit remain sharp state, until the carcass polishing.
Therefore, drill bit rate of penetration provided by the present invention is stable, and bit life improves, and drilling project can be obtained very high technical-economic index.
Simultaneously, use this drill bit, under complicated rock stratum geological conditions, in medium hardness, in the stratum of unusual solid rock alternating layers, crept into, can obtain high and stable rate of penetration, longer bit life, and greatly improve the technical-economic index of drilling project.
Claims (3)
1. a self-sharpening ring tooth diamond-impregnated bit, it is characterized in that: at least comprise and be bit body cylindraceous, the top of bit body is inlaid with the cutting blocks of 2-16 piece arc along the circumferential direction, the height of described cutting blocks is all identical, the cross section of cutting blocks is fan-shaped, the end face of cutting blocks is working lip, be equipped with curved 3-10 bar cutting teeth on described working lip, the longitudinal section that is provided with the cutting blocks of cutting teeth is pectination, sharp-pointed place, Shang top, longitudinal section is the top margin of cutting teeth, the take up an official post circumference at top margin place of a cutting teeth of cutting blocks is all concentric with the circumference at cutting blocks place, the drift angle of cutting teeth is 50-120 °, and the drift angle that is positioned at the cutting teeth on the different cutting blocks on same circumference is all not identical.
2. self-sharpening ring tooth diamond-impregnated bit according to claim 1, it is characterized in that: described cutting blocks is provided with eight, and the arc length of eight cutting blocks is all identical.
3. self-sharpening ring tooth diamond-impregnated bit according to claim 2, it is characterized in that: be equipped with 3 cutting teeths on described cutting blocks, be respectively interior cutting teeth, middle cutting teeth and outer cutting teeth, wherein the top margin of eight interior cutting teeths all is positioned on same circumference, article eight, the top margin of middle cutting teeth all is positioned on same circumference, and the top margin of eight outer cutting teeths all is positioned on same circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310343287.3A CN103437713B (en) | 2013-08-07 | 2013-08-07 | A kind of self-sharpening ring tooth diamond-impregnated bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310343287.3A CN103437713B (en) | 2013-08-07 | 2013-08-07 | A kind of self-sharpening ring tooth diamond-impregnated bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103437713A true CN103437713A (en) | 2013-12-11 |
| CN103437713B CN103437713B (en) | 2015-11-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310343287.3A Expired - Fee Related CN103437713B (en) | 2013-08-07 | 2013-08-07 | A kind of self-sharpening ring tooth diamond-impregnated bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103437713B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742078A (en) * | 2014-01-08 | 2014-04-23 | 地质矿产部无锡钻探工具厂 | Comb-like fan-shaped block diamond-impregnated bit |
| CN113530455A (en) * | 2021-08-31 | 2021-10-22 | 中国地质大学（武汉） | Diamond bit combining concentric circular teeth and spiral teeth |
| CN113622827A (en) * | 2021-08-31 | 2021-11-09 | 中国地质大学（武汉） | Diamond bit for drilling into fractured hard rock stratum |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3537538A (en) * | 1969-05-21 | 1970-11-03 | Christensen Diamond Prod Co | Impregnated diamond bit |
| US20100089660A1 (en) * | 2006-12-14 | 2010-04-15 | Longyear Tm, Inc. | Drill bits with axially-tapered waterways |
| CN102272407A (en) * | 2008-08-15 | 2011-12-07 | 山特维克知识产权股份有限公司 | Core drill bit |
| US20110308865A1 (en) * | 2010-06-17 | 2011-12-22 | American National Carbide Co. | Downhole cutting tool, cutting elements and method |
| CN102472082A (en) * | 2009-08-14 | 2012-05-23 | 长年Tm公司 | Diamond impregnated bit with aggressive face profile |
-
2013
- 2013-08-07 CN CN201310343287.3A patent/CN103437713B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3537538A (en) * | 1969-05-21 | 1970-11-03 | Christensen Diamond Prod Co | Impregnated diamond bit |
| US20100089660A1 (en) * | 2006-12-14 | 2010-04-15 | Longyear Tm, Inc. | Drill bits with axially-tapered waterways |
| CN102272407A (en) * | 2008-08-15 | 2011-12-07 | 山特维克知识产权股份有限公司 | Core drill bit |
| CN102472082A (en) * | 2009-08-14 | 2012-05-23 | 长年Tm公司 | Diamond impregnated bit with aggressive face profile |
| CN102782243A (en) * | 2009-12-15 | 2012-11-14 | 长年Tm公司 | Drill bits with axially-tapered waterways |
| US20110308865A1 (en) * | 2010-06-17 | 2011-12-22 | American National Carbide Co. | Downhole cutting tool, cutting elements and method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742078A (en) * | 2014-01-08 | 2014-04-23 | 地质矿产部无锡钻探工具厂 | Comb-like fan-shaped block diamond-impregnated bit |
| CN113530455A (en) * | 2021-08-31 | 2021-10-22 | 中国地质大学（武汉） | Diamond bit combining concentric circular teeth and spiral teeth |
| CN113622827A (en) * | 2021-08-31 | 2021-11-09 | 中国地质大学（武汉） | Diamond bit for drilling into fractured hard rock stratum |
| CN113622827B (en) * | 2021-08-31 | 2022-05-17 | 中国地质大学（武汉） | Diamond bit for drilling into fractured hard rock stratum |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103437713B (en) | 2015-11-04 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20131211 Assignee: Wuhan Wan Bang Laser Diamond Tools Co.,Ltd. Assignor: CHINA University OF GEOSCIENCES (WUHAN CITY) Contract record no.: 2019420000018 Denomination of invention: Self-sharpening type ring tooth impregnated diamond drill bit Granted publication date: 20151104 License type: Exclusive License Record date: 20190401 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151104 |