CN103670284A - Impact-resisting wear resisting tool - Google Patents
Impact-resisting wear resisting tool Download PDFInfo
- Publication number
- CN103670284A CN103670284A CN201310641982.8A CN201310641982A CN103670284A CN 103670284 A CN103670284 A CN 103670284A CN 201310641982 A CN201310641982 A CN 201310641982A CN 103670284 A CN103670284 A CN 103670284A
- Authority
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- China
- Prior art keywords
- impact
- resisting
- working portion
- support base
- operating portion
- 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.)
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- 229910003460 diamond Inorganic materials 0.000 claims description 10
- 239000010432 diamond Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 6
- 229910052582 BN Inorganic materials 0.000 claims description 3
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 3
- 238000009527 percussion Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000011435 rock Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
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- Earth Drilling (AREA)
Abstract
The invention relates to the technical field of grinding tools, in particular to an impact-resisting wear resisting tool fitted on a drill bit or percussion drill for use. The impact-resisting wear resisting tool comprises a support base and an operating portion disposed on the same. A connecting interface between the support base and the operating portion is a continuous curved surface. The continuous interface between the support base and the operating portion is the continuous curved surface, area of contact between the support base and the operating portion can be increased, the support base and the operating portion can be linked together firmly, and accordingly impact resistance of the impact-resisting wear resisting tool is greatly improved and the service life of the impact-resisting wear resisting tool is prolonged relatively.
Description
Technical field
The present invention relates to milling tool technical field, be specifically related to a kind of impact-resistant abrasion-proof instrument using on drill bit and Churn drill that is assemblied in.
Background technology
PDC composite teeth because its high abrasion resistance and hardness, at deep-sea and the probing of firm hard formation there is its unique advantage.According to different geologic structures, PDC tooth has different designs and shape.Column composite sheet is mainly used in cut drill, is also in the use of scrape type drill bit.For impingement rock stratum, rock bit, or drill hammer occupies important proportion.In the impact teeth type of rock bit, spherical tooth is widely used.Owing to having reduced to greatest extent wedge angle, the resistance to impact of spherical tooth is higher than columnar tooth.But the relative PDC material of hardness of WC matrix and alloy thereof has larger gap, therefore wear no resistance, in use quick abrasion.Reach high performance percussion drilling effect, in conjunction with PDC material, to spherical tooth, be proved and have stronger combination property, comprise good abrasion resistance, resistance to impact is widely used in rock bit.
The spherical composite teeth of PDC is comprised of two parts conventionally: hard alloy substrate and spherical polycrystalline diamond wearing layer are working portion.For reaching high diamond and the bonding of diamond, polycrystalline diamond need under HTHP, suppress and.In HTHP pressing process, metallic cobalt is extruded from WC matrix, sweeps more diamond layer, forms high-strength diamond bonding, after this reduces temperature and pressure, completes sintering.Burn till like this to such an extent that the common fragility of polycrystalline diamond is higher, the probing application for HI high impact, has larger challenge.
In spherical tooth, the interface counter stress of tooth distributes has very large impact, existing interface mainly to consider the optimization of these stress in HTHP is synthetic.But in using, because the stress that impact causes is less as emphasis.
Summary of the invention
For above-mentioned technical problem, the invention provides a kind of reasonable in design, there is higher anti-impact force, the impact-resistant abrasion-proof instrument of long service life.
Realize technical scheme of the present invention as follows:
Impact-resistant abrasion-proof instrument, comprises support matrices, is arranged at the working portion on support matrices, and the linkage interface between described support matrices and working portion is continuous curve surface.
Described working portion is that polycrystalline diamond or polycrystal cubic boron nitride material are made.
The outer work plane of described working portion is hemispherical curved surface.
The outer work plane of described working portion is the curved surface that catenary rotates to form.
Described continuous curve surface is comprised of a series of catenaries.
Adopted such scheme, linkage interface between support matrices and working portion is continuous curve surface, can increase the contact surface between support matrices and working portion, can firmly be bonded together, therefore improved greatly the shock resistance of wear resistant tools, relatively increased the service life.
Accompanying drawing explanation
Fig. 1 is first embodiment of the present invention structural representation;
Fig. 2 is second embodiment of the present invention structural representation;
Fig. 3 is third embodiment of the present invention structural representation;
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
Impact-resistant abrasion-proof instrument, comprises support matrices, is arranged at the working portion on support matrices, and the linkage interface between support matrices and working portion is continuous curve surface.Working portion is that polycrystalline diamond or polycrystal cubic boron nitride material are made.The outer work plane of working portion is hemispherical curved surface.The outer work plane of working portion is the curved surface that catenary rotates to form.Continuous curve surface is comprised of a series of catenaries.
Referring to Fig. 1, shown and there are continuous interfacial 3 support matrices 1 of design and 2 signals of the working portion of wearing layer, the curved surface that continuous interfacial 3 is rotated to form around wear resistant tools center line by a series of catenaries forms.The curved surface that superhard material working portion extexine 4 is also rotated to form by catenary simultaneously forms.Catenary (or be inverted catenary) is expressed as with mathematical formulae: y=Acosh (Bx) wherein A and B is constant.Catenary is because its unique mechanics transfer mode, when being subject to top impact, can the most effectively impact stress be converted into the compressive stress of support matrices and drill bit, avoided prejudicial tensile stress, be the most stable ogive curve, the positive camber that curve rotates to form via central axis thus has great mechanical stability in three dimensions.Therefore improved greatly the shock resistance of wear resistant tools.At linkage interface place, interface can be a curved surface being rotated to form by central axis by independent catenary, can be also by many catenaries be inverted the catenary fluctuating curved surface that the full curve that forms rotates to form by central axis that is connected.
Fig. 2 has shown the another kind of wear resistant tools with linkage interface design, linkage interface design is by many catenaries and the inversion catenary fluctuating curved surface that the full curve that forms rotates to form by central axis that is connected, but top is to be inverted the catenary surfaces of revolution, is umbilicate type.Working portion extexine is also the catenary surfaces of revolution.
Fig. 3 has shown the wear resistant tools having with the identical connection of the first embodiment cross section, but the extexine of working portion is hemispherical.
Claims (5)
1. impact-resistant abrasion-proof instrument, comprises support matrices, is arranged at the working portion on support matrices, it is characterized in that, the linkage interface between described support matrices and working portion is continuous curve surface.
2. impact-resistant abrasion-proof instrument according to claim 1, is characterized in that, described working portion is that polycrystalline diamond or polycrystal cubic boron nitride material are made.
3. impact-resistant abrasion-proof instrument according to claim 1, is characterized in that, the outer work plane of described working portion is hemispherical curved surface.
4. impact-resistant abrasion-proof instrument according to claim 1, is characterized in that, the outer work plane of described working portion is the curved surface that catenary rotates to form.
5. impact-resistant abrasion-proof instrument according to claim 1, is characterized in that, described continuous curve surface is comprised of a series of catenaries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310641982.8A CN103670284A (en) | 2013-12-03 | 2013-12-03 | Impact-resisting wear resisting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310641982.8A CN103670284A (en) | 2013-12-03 | 2013-12-03 | Impact-resisting wear resisting tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103670284A true CN103670284A (en) | 2014-03-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310641982.8A Pending CN103670284A (en) | 2013-12-03 | 2013-12-03 | Impact-resisting wear resisting tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103670284A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4997049A (en) * | 1988-08-15 | 1991-03-05 | Klaus Tank | Tool insert |
| GB2275068A (en) * | 1993-02-10 | 1994-08-17 | Baker Hughes Inc | Polycrystalline diamond cutting element |
| GB2325481A (en) * | 1997-05-16 | 1998-11-25 | Camco International | Preform element for rotary drill bit |
| US5871060A (en) * | 1997-02-20 | 1999-02-16 | Jensen; Kenneth M. | Attachment geometry for non-planar drill inserts |
| GB2329405A (en) * | 1997-09-23 | 1999-03-24 | Baker Hughes Inc | Cutting elements providing constant superabrasive contact area |
| GB2413575A (en) * | 2004-04-30 | 2005-11-02 | Smith International | Cutter having working surface with an edge chamfer of varying geometry |
| CN101204743A (en) * | 2006-12-22 | 2008-06-25 | 希尔蒂股份公司 | Rotary percussion drill bit with a hard material insert |
-
2013
- 2013-12-03 CN CN201310641982.8A patent/CN103670284A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4997049A (en) * | 1988-08-15 | 1991-03-05 | Klaus Tank | Tool insert |
| GB2275068A (en) * | 1993-02-10 | 1994-08-17 | Baker Hughes Inc | Polycrystalline diamond cutting element |
| US5871060A (en) * | 1997-02-20 | 1999-02-16 | Jensen; Kenneth M. | Attachment geometry for non-planar drill inserts |
| GB2325481A (en) * | 1997-05-16 | 1998-11-25 | Camco International | Preform element for rotary drill bit |
| GB2329405A (en) * | 1997-09-23 | 1999-03-24 | Baker Hughes Inc | Cutting elements providing constant superabrasive contact area |
| GB2413575A (en) * | 2004-04-30 | 2005-11-02 | Smith International | Cutter having working surface with an edge chamfer of varying geometry |
| CN101204743A (en) * | 2006-12-22 | 2008-06-25 | 希尔蒂股份公司 | Rotary percussion drill bit with a hard material insert |
Non-Patent Citations (1)
| Title |
|---|
| 细泽治等: "《结构设计专家入门 钢结构篇》", 31 March 2012, 中国建筑工业出版社 * |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140326 |