CN103628821A - Coring bit suitable for soft-hard drilling objects - Google Patents
Coring bit suitable for soft-hard drilling objects Download PDFInfo
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- CN103628821A CN103628821A CN201310682456.6A CN201310682456A CN103628821A CN 103628821 A CN103628821 A CN 103628821A CN 201310682456 A CN201310682456 A CN 201310682456A CN 103628821 A CN103628821 A CN 103628821A
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Abstract
The invention provides a coring bit suitable for soft-hard drilling objects. The coring bit comprises a bit base body and a conical head arranged below the bit base body, wherein the bit base body is in a hollow cylinder shape; a drill stem connecting part is arranged at the upper end of the bit; the inner diameter of an opening of the conical head is smaller than the inner diameter of the hollow cylinder of the bit base body; an external spiral is arranged on the outer surface of the bit base body; grooves are formed in the inclined surface and the bottom surface of the conical head; cutting tools with corresponding shapes are arranged in the grooves and are riveted in the grooves through rivets; a limiting piece for limiting initial positions of the cutting tools is formed between holes in the rivets and the cutting tools; a high-temperature-resistant elastic cushion block is arranged between the cutting tools arranged between the limiting piece and the bottom of the groove and the groove. The coring bit suitable for soft-hard drilling objects is high in adaptability, and hard and soft rocks can be simultaneously crushed without replacing the bit; smooth powder discharge is realized, the cutting heat and friction heat are dissipated out of the hole bottom through drilling cuttings, and the heat dissipation is reduced; in order to improve the cutting efficiency, the cutting blade can have multiple cutting angles by adjusting the size of a rubber cushion block.
Description
Technical field
The invention belongs to space probing field, relate under space environment, utilize core bit to carry out moonscape coring, to obtain the drill bit structure of former state lunar soil.Particularly, at complicated lunar soil, comprise core bit soft, that hard lead under object condition.
Background technology
In the prior art, in lunar exploration engineering, to return be key one step of the understanding moon to the sampling of the unmanned moon, by adopting back the analysis of lunar soil, can on numerous direction of scientific rersearch such as menology environment, geological structure, menology mineralogical composition, lunar base addressing, make a breakthrough.Core bit is that menology is drilled one of needed important tool, and can it play a key effect to realizing smoothly lunar soil sampling.
Moonscape very may have basement rock exposure place in the cliff place of steep hills arteries and veins, impact crater and volcanic vent except only a few, remainder is mostly covered with the lunar soil that a layer thickness does not wait, that is to say that moonscape not only has loose lunar soil, also has a small amount of lunar rock.The different features such as that lunar soil shows as is again loose, consolidation, and along with its compactness of increase of the degree of depth increases.Therefore the Strength Changes scope of moonscape lunar soil is very large, from loose lunar soil to firm not all being found decayed basalt, has proposed very high challenge to the drill sampling technology of moonscape.
Complexity due to lunar soil itself, carrying out lunar soil while creeping into, may meet lunar rock, therefore for drill bit must be applicable to the object that creeps into of soft, hard different qualities, from loose lunar soil to hard lunar rock, have the extremely strong object compliance of creeping into, to core bit, design has proposed very high challenge for this.The core bit that earth probing and drilling project construction adopt is all to design based on drillability of rock grade, drillability rank is different, the drill bit material adopting is different, and drill bit structure is not identical yet, also there is no to be applicable at present the core bit of friable soil and solid rock simultaneously.
At present limited to the understanding of lunar soil, the drillability of lunar soil is still not clear, and also to core bit, design has brought difficulty.
Summary of the invention
The deficiency existing for prior art, the object of the present invention is to provide a kind of core bit structure that is applicable to loose lunar soil and lunar rock, can meet the coring requirement of complicated lunar soil, guarantees carrying out smoothly of sampling work.
For achieving the above object, the invention provides a kind of be applicable to soft-hard lead into the core bit of object, comprise bit matrix and the taper head that is arranged on bit matrix below, described bit matrix is open circles tubular, in described drill bit upper end, be provided with drilling rod connecting portion, described taper head opening internal diameter is less than the internal diameter of described bit matrix hollow cylinder, at described bit matrix external surface, be provided with external spiral, inclined-plane and bottom surface fluting at described taper head, the cutting element of respective shapes is installed in described groove, described cutting element is hinged in described groove by rivet, between hole on described rivet and described cutting element, be provided with the locating part of restriction cutting element initial position, between described locating part and described bottom land, have between described cutting element and described groove and be provided with high temperature resistant elastic cushion block.
Preferably, the conical surface form fit of described cutting element and described conical head, the lower end of described cutting element is extended and stretches within the scope of described opening to described taper head opening, and the outstanding described taper cephalic par in described cutting element lower end is 2mm at least.
Preferably, described high temperature resistant elastic cushion block is rubber cushion blocks, and described rubber cushion blocks is arranged on described bottom land, and described rubber cushion blocks and described bottom land are bonding.
Preferably, described cutting element upper end outer corners is acute angle, between described cutting element and described bit matrix are axial, has angle.
Preferably, the angle of described cutting element outer corners is 30 °-60 °.
Preferably, described cutting element upper end is connected with described external spiral.
Preferably, described cutting element is 3-4, and corresponding external spiral is also 3-4.
Preferably, on the inclined-plane of described taper head, have Conical Spiral Groove, described Conical Spiral Groove is communicated with the space between two external spirals, and described helicla flute is consistent with described cutting element incline direction.
Preferably, described cutting element outer corners external diameter is greater than described external spiral external diameter.
Provided by the invention be applicable to soft-hard lead adaptablely into the core bit of object, the soft or hard operating mode again and again changing in the time of can tackling lunar soil core-drilling, does not need more bit change, guarantees carrying out smoothly of sampling work; The form that arranges between helicla flute, external screw thread and cutting element is can the row's of realization powder smooth and easy, and heat in metal cutting and frictional heat, by the bottom of drilling cuttings tap, effectively lower heat power consumption; In order to improve stock-removing efficiency, can make cutting edge there is different cutting angles by adjusting the size of rubber cushion blocks.
Accompanying drawing explanation
That Fig. 1 is that the present invention is applicable to is soft-structural representation harding lead and present when the core bit of object runs into rock;
That Fig. 2 is that the present invention is applicable to is soft-structural representation harding lead and present when the core bit of object runs into lunar soil;
That Fig. 3 is that the present invention is applicable to is soft-hard lead into the structural representation of the core bit of object;
That Fig. 4 is that the present invention is applicable to is soft-hard lead into the end face structure schematic diagram of the core bit of object;
That Fig. 5 is that the present invention is applicable to is soft-hard lead into the structural representation of locating part between the rivet of the core bit of object and cutting element.
In figure: 1-drill bit body, 2-taper head, 3-cutting element, 4-external spiral, 5-helicla flute, 6-rivet, 7-is high temperature resistant elastic cushion block, 8-flange
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described further:
Please refer to Fig. 3, Fig. 4 and Fig. 5, that Fig. 3 is that the present invention is applicable to is soft-hard lead into the structural representation of the core bit of object, that Fig. 4 is that the present invention is applicable to is soft-hard lead into the end face structure schematic diagram of the core bit of object, and that Fig. 5 is that the present invention is applicable to is soft-hard lead into the structural representation of locating part between the rivet 6 of the core bit of object and cutting element 3.
A kind of be applicable to soft-hard lead into the core bit of object, comprise bit matrix 1 and the taper head 2 that is arranged on bit matrix 1 below, described bit matrix 1 is open circles tubular, in described drill bit upper end, be provided with drilling rod connecting portion, described taper head 2 opening internal diameters are less than the internal diameter of described bit matrix 1 hollow cylinder, at described bit matrix 1 external surface, be provided with external spiral 4, inclined-plane and bottom surface fluting at described taper head 2, the cutting element 3 of respective shapes is installed in described groove, described cutting element 3 is hinged in described groove by rivet 6, the locating part that is provided with restriction cutting element 3 initial positions between hole on described rivet 6 and described cutting element 3 (is provided with flange 8 on rivet 6 surfaces and cutting element 3 hole walls, two flanges 8 hang together and pray the effect that limits initial position), between described locating part and described bottom land, have and between described cutting element 3 and described groove, be provided with high temperature resistant elastic cushion block 7.
The conical surface form fit of described cutting element 3 and described conical head, the lower end of described cutting element 3 is extended and stretches within the scope of described opening to described taper head 2 openings, and outstanding described taper head 2 ends, described cutting element 3 lower ends are 2mm at least.
Described high temperature resistant elastic cushion block 7 is rubber cushion blocks, and described rubber cushion blocks is arranged on described bottom land, and described rubber cushion blocks and described bottom land are bonding.
Described cutting element 3 upper end outer corners are acute angle, between described cutting element 3 and described bit matrix 1 are axial, have angle.
The angle of described cutting element 3 outer corners is 30 °-60 °.
Described cutting element 3 upper ends are connected with described external spiral 4.
Described cutting element 3 is 3-4, and corresponding external spiral 4 is also 3-4.
On the inclined-plane of described taper head 2, have Conical Spiral Groove 5, the space that described Conical Spiral Groove 5 is communicated with between two external spirals 4.
Described cutting element 3 outer corners external diameters are greater than described external spiral 4 external diameters.
While creeping in soft, hard, to cut (shearing), act as the mode of mainly creeping into, cutting element 3 is the certain angle of deflection along clockwise direction, conforms to drilling direction, is beneficial to the discharge of lunar soil and drilling cuttings.
Please refer to Fig. 2, that Fig. 2 is that the present invention is applicable to is soft-structural representation harding lead and present when the core bit of object runs into lunar soil.
When creeping into loose lunar soil, because loose lunar soil is less to the oppressive force of cutting element 3, cutting element 3 lower edges have certain angle of slope, and drill bit integral body is conical surface scraper form, and the upper surface of cutting element 3 is acute angle, reduces cutting resistance, has improved the ability of breaking ground; Due to the certain angle of cutting element 3 deflections, and consistent with 5 directions of helicla flute on conical head, when cutting element 3, cut after soil, directly enter the discharge that Conical Spiral Groove 5 is beneficial to drilling cuttings, reduce broken rock energy consumption.
Please refer to Fig. 1, that Fig. 1 is that the present invention is applicable to is soft-structural representation harding lead and present when the core bit of object runs into rock.
When meeting rock, the front end face of cutting element 3 (lower edge) is under pressure larger, the angle of slope of lower edge is diminished and even become horizontal direction, initial contact area between cutting element 3 and rock is shared equally to whole cutting element 3 lower edges, cutting force is large, be easy to rock cutting, along with creeping into deeply, diamond compact (cutting element 3, inclined-plane down together) also participates in cutting, tap bed rock powder, effectively prevents the wearing and tearing of secondary cutting to diamond compact simultaneously, has reduced broken rock power consumption.The catalase in shaft bottom is had to good effect.
Cutting edge lower end is protruded drill bit bottom surface 2～3mm downwards, and assurance cutting element 3 can successfully be cut rock; Cutting element 3 outer ends exceed drill body external diameter, make bit body and hole wall have gap, and the row's of assurance powder is smooth and easy; Cutting element 3 lower ends exceed the internal diameter of drill body, can core smoothly, and heat in metal cutting and frictional heat, by the bottom of drilling cuttings tap, effectively lower heat power consumption.
Above-described embodiment is only for the invention example is clearly described, and the not restriction to the invention specific embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.All any apparent variations of being extended out within the spirit and principles in the present invention or change are still among the protection domain in the invention claim.
Claims (9)
- One kind be applicable to soft-hard lead into the core bit of object, comprise bit matrix and the taper head that is arranged on bit matrix below, described bit matrix is open circles tubular, in described drill bit upper end, be provided with drilling rod connecting portion, described taper head opening internal diameter is less than the internal diameter of described bit matrix hollow cylinder, at described bit matrix external surface, be provided with external spiral, it is characterized in that, inclined-plane and bottom surface fluting at described taper head, the cutting element of respective shapes is installed in described groove, described cutting element is hinged in described groove by rivet, between hole on described rivet and described cutting element, be provided with the locating part of restriction cutting element initial position, between described locating part and described bottom land, have between described cutting element and described groove and be provided with high temperature resistant elastic cushion block.
- 2. the core bit that is applicable to soft-hard-rock boring object according to claim 1, it is characterized in that, the conical surface form fit of described cutting element and described conical head, the lower end of described cutting element is extended and stretches within the scope of described opening to described taper head opening, and the outstanding described taper cephalic par in described cutting element lower end is 2mm at least.
- 3. the core bit that is applicable to soft-hard-rock boring object according to claim 2, is characterized in that, described high temperature resistant elastic cushion block is rubber cushion blocks, and described rubber cushion blocks is arranged on described bottom land and divides, and described rubber cushion blocks and described bottom land are bonding.
- 4. the core bit that is applicable to soft-hard-rock boring object according to claim 3, is characterized in that, described cutting element upper end outer corners is acute angle, between described cutting element and described bit matrix are axial, has angle.
- 5. the core bit that is applicable to soft-hard-rock boring object according to claim 4, is characterized in that, the angle of described cutting element outer corners is 30 °-60 °.
- 6. the core bit that is applicable to soft-hard-rock boring object according to claim 4, is characterized in that, described cutting element outer corners external diameter is greater than described external spiral external diameter.
- 7. according to the arbitrary described core bit that is applicable to soft-hard-rock boring object of claim 1-5, it is characterized in that, described cutting element upper end is connected with described external spiral.
- 8. the core bit that is applicable to soft-hard-rock boring object according to claim 6, is characterized in that, described cutting element is 3-4, and corresponding external spiral is also 3-4.
- 9. the core bit that is applicable to soft-hard-rock boring object according to claim 4, it is characterized in that, on the inclined-plane of described taper head, have Conical Spiral Groove, described Conical Spiral Groove is communicated with the space between two external spirals, and described helicla flute is consistent with the incline direction of described cutting element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310682456.6A CN103628821B (en) | 2013-12-12 | 2013-12-12 | Be applicable to soft-hard lead into the core bit of object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310682456.6A CN103628821B (en) | 2013-12-12 | 2013-12-12 | Be applicable to soft-hard lead into the core bit of object |
Publications (2)
| Publication Number | Publication Date |
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| CN103628821A true CN103628821A (en) | 2014-03-12 |
| CN103628821B CN103628821B (en) | 2016-02-03 |
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| CN201310682456.6A Expired - Fee Related CN103628821B (en) | 2013-12-12 | 2013-12-12 | Be applicable to soft-hard lead into the core bit of object |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106150434A (en) * | 2016-08-25 | 2016-11-23 | 山东三田临朐石油机械有限公司 | Top uncoupling type paraffin scraper |
| CN106223855A (en) * | 2016-09-06 | 2016-12-14 | 浙江省交通工程建设集团有限公司 | A kind of Pneumatic control type for embedded rock pile hard-soft heterogeneous ground cuts rock device |
| CN106499341A (en) * | 2015-09-04 | 2017-03-15 | 钟建华 | Portable anti-skidding puts coring bit |
| CN107130933A (en) * | 2017-04-17 | 2017-09-05 | 武汉地大长江钻头有限公司 | Coring bit |
| CN107630664A (en) * | 2017-10-31 | 2018-01-26 | 吉林大学 | A kind of warm ice sheet drilling uses ice auger drill bit |
| CN110202700A (en) * | 2019-07-08 | 2019-09-06 | 江苏金元素超硬材料有限公司 | A kind of grooved bit and its laser welding tooling |
| CN116255090A (en) * | 2023-05-15 | 2023-06-13 | 山东省地质矿产勘查开发局第一地质大队（山东省第一地质矿产勘查院） | Rock sampling equipment |
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| EP0285678A1 (en) * | 1985-08-02 | 1988-10-12 | Eastman Teleco Company | Earth boring bit for soft to hard formations |
| CN201747279U (en) * | 2010-08-27 | 2011-02-16 | 董庆康 | Geological exploration drilling machine bit |
| CN102128013A (en) * | 2011-03-07 | 2011-07-20 | 佛山市南海锐力臣工具有限公司 | Diamond impregnated wire line coring geological bit and manufacturing method thereof |
| CN102721572A (en) * | 2012-06-18 | 2012-10-10 | 哈尔滨工业大学 | Drilling coring sampling mechanism with double-layer soft bag |
| CN202483457U (en) * | 2012-04-01 | 2012-10-10 | 北京金宝顺福石油技术开发有限公司 | 8.375-inch-long eight-scraper polycrystalline diamond compact (PDC) coring bit |
| CN203769664U (en) * | 2013-12-12 | 2014-08-13 | 中国地质大学（北京） | Coring bit suitable for soft and hard drilled objects |
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2013
- 2013-12-12 CN CN201310682456.6A patent/CN103628821B/en not_active Expired - Fee Related
Patent Citations (6)
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| EP0285678A1 (en) * | 1985-08-02 | 1988-10-12 | Eastman Teleco Company | Earth boring bit for soft to hard formations |
| CN201747279U (en) * | 2010-08-27 | 2011-02-16 | 董庆康 | Geological exploration drilling machine bit |
| CN102128013A (en) * | 2011-03-07 | 2011-07-20 | 佛山市南海锐力臣工具有限公司 | Diamond impregnated wire line coring geological bit and manufacturing method thereof |
| CN202483457U (en) * | 2012-04-01 | 2012-10-10 | 北京金宝顺福石油技术开发有限公司 | 8.375-inch-long eight-scraper polycrystalline diamond compact (PDC) coring bit |
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| CN203769664U (en) * | 2013-12-12 | 2014-08-13 | 中国地质大学（北京） | Coring bit suitable for soft and hard drilled objects |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106499341A (en) * | 2015-09-04 | 2017-03-15 | 钟建华 | Portable anti-skidding puts coring bit |
| CN106150434A (en) * | 2016-08-25 | 2016-11-23 | 山东三田临朐石油机械有限公司 | Top uncoupling type paraffin scraper |
| CN106150434B (en) * | 2016-08-25 | 2019-04-05 | 山东三田临朐石油机械有限公司 | Top uncoupling type paraffin scraper |
| CN106223855A (en) * | 2016-09-06 | 2016-12-14 | 浙江省交通工程建设集团有限公司 | A kind of Pneumatic control type for embedded rock pile hard-soft heterogeneous ground cuts rock device |
| CN107130933A (en) * | 2017-04-17 | 2017-09-05 | 武汉地大长江钻头有限公司 | Coring bit |
| CN107630664A (en) * | 2017-10-31 | 2018-01-26 | 吉林大学 | A kind of warm ice sheet drilling uses ice auger drill bit |
| CN107630664B (en) * | 2017-10-31 | 2018-08-10 | 吉林大学 | A kind of warm ice sheet drilling ice auger drill bit |
| CN110202700A (en) * | 2019-07-08 | 2019-09-06 | 江苏金元素超硬材料有限公司 | A kind of grooved bit and its laser welding tooling |
| CN116255090A (en) * | 2023-05-15 | 2023-06-13 | 山东省地质矿产勘查开发局第一地质大队（山东省第一地质矿产勘查院） | Rock sampling equipment |
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| CN103628821B (en) | 2016-02-03 |
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Granted publication date: 20160203 Termination date: 20161212 |