CN203867471U - Gauge protection down-the-hole drill bit - Google Patents

Gauge protection down-the-hole drill bit Download PDF

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Publication number
CN203867471U
CN203867471U CN201420295137.XU CN201420295137U CN203867471U CN 203867471 U CN203867471 U CN 203867471U CN 201420295137 U CN201420295137 U CN 201420295137U CN 203867471 U CN203867471 U CN 203867471U
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CN
China
Prior art keywords
drill bit
bit matrix
gauge
bit
rod
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.)
Expired - Fee Related
Application number
CN201420295137.XU
Other languages
Chinese (zh)
Inventor
王瑞利
何春霞
王增胜
郭帅领
王浩刚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huanghe Science and Technology College
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Huanghe Science and Technology College
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Huanghe Science and Technology College filed Critical Huanghe Science and Technology College
Priority to CN201420295137.XU priority Critical patent/CN203867471U/en
Application granted granted Critical
Publication of CN203867471U publication Critical patent/CN203867471U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

A gauge protection down-the-hole drill bit comprises a connecting rod with an external spline structure. A drill bit body is arranged at one end of the connecting rod, and a straight channel is axially formed in the other end of the connecting rod. Three inclined channels with the inner ends all communicated with the straight channel are formed in the drill bit body. Grooves are formed in the end face and the circumferential surface of the drill bit body respectively, wear-resistant drill teeth protruding out of the drill bit body are arranged in the grooves in the end face of the drill bit body, the parts, protruding out of the drill bit body, of the wear-resistant drill teeth are of a semispherical structure, gauge protection teeth flush with the drill bit body are arranged in the grooves in the circumferential surface of the drill bit body, and the wear-resistant drill teeth and the gauge protection teeth are both made of polycrystalline diamond compacts and/or polycrystalline diamond. According to the gauge protection down-the-hole drill bit, it is guaranteed that the outer diameter of the drill bit body can be kept constant for a long time in the using process, the size of the hole diameter is guaranteed, and thus the operating efficiency is improved, the service life of the down-the-hole drill bit is prolonged, the replacement frequency of the down-the-hole drill bit is reduced, the construction cost is reduced, and the working efficiency is improved.

Description

Gauge down-the-hold drill bit
Technical field
The utility model relates to a kind of down-the-hole air hammer, relates in particular to a kind of gauge down-the-hold drill bit.
Background technology
At present, down-the-hold drill bit creeps into underground mine, quarry, hydroelectric project, well in the open, the construction plant such as mineral prospecting, rock mass cable wire anchor hole Drilling, underground heat cutting, subway engineering excavation, skirt piles supporting uses in a large number.In traditional technology, down-the-hold drill bit is by hard-metal insert head and steel matrix composition.In medium hardness and partially soft rock stratum, traditional down-the-hold drill bit instrument can meet requirement of engineering, but while running into the strong rock stratum of the hard granite in rock stratum or abrasiveness, the steel matrix serious wear of down-the-hold drill bit, cause hard-metal insert head to come off too early, the external diameter that shows drill bit reduces, the life-span is short, the weak tendency of inefficiency, not only affect quality and the progress of engineering, also cause human and material resources and raw-material a large amount of waste.Therefore, be necessary to study a kind of high performance gauge down-the-hold drill bit, make the steel matrix of down-the-hold drill bit there is high abrasion resistance, ensure that the external diameter of drill bit does not diminish, extend down-the-hold drill bit application life, improve tool performance, save material.
Utility model content
The utility model is in order to solve weak point of the prior art, provides that a kind of Drilling efficiency is high, abrasion resistance strong, the gauge down-the-hold drill bit of long service life.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: gauge down-the-hold drill bit, comprise the connecting rod with external splines structure, connecting rod external surface is along the jump-ring slot that is circumferentially with annular, connecting rod one end is provided with bit matrix, the connecting rod other end is provided with one vertically directly to passage, in bit matrix, be provided with inner all with straight three slanted channels to channel connection, end face and the periphery of described bit matrix are respectively equipped with groove, in the groove of bit matrix end face, be provided with the wear-resisting brill tooth that protrudes from bit matrix, the part that wear-resisting brill tooth protrudes from outside bit matrix is hemispherical structure, in the groove of bit matrix periphery, be provided with bit matrix and keep smooth gauge teeth, wear-resisting brill tooth and gauge teeth are made by composite polycrystal-diamond and/or polycrystalline diamond.
Described bit matrix is evenly provided with a circle, and composite polycrystal-diamond is made up of cemented carbide substrate layer and polycrystalline diamond layer, and the thickness of polycrystalline diamond layer is 0.1~4.0mm.
Described gauge teeth is cylindrical structural, and the external diameter of gauge teeth is that 4mm~16mm, axial length are 6mm~10mm.
Adopt technique scheme, connecting rod plug in the middle of card drill sleeve and with card drill sleeve spline joint, pressure-air is sent to the work plane of bit matrix by straight three slanted channels in passage and bit matrix in connecting rod.The utlity model has following beneficial effect:
1, the utility model is that the high-wearing feature of composite polycrystal-diamond, polycrystalline diamond, stronger impact resistance are applied on down-the-hold drill bit, the external diameter of having guaranteed bit matrix keeps constant size in long use procedure, guarantee the size in aperture, thereby improve operating efficiency, extend the application life of down-the-hold drill bit, reduce the replacing number of times of down-the-hold drill bit, and then reduced construction cost, increased work efficiency.
2, the external diameter of wear-resisting brill tooth and gauge teeth, length equidimension are the optimization technique parameters for economy and overall balance in application life.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
As shown in Figure 1, gauge down-the-hold drill bit of the present utility model, comprise the connecting rod 1 with external splines structure, connecting rod 1 external surface is along the jump-ring slot 9 that is circumferentially with annular, connecting rod 1 one end is provided with bit matrix 2, connecting rod 1 other end is provided with one vertically directly to passage 3, in bit matrix 2, be provided with inner all with straight three slanted channels 4 that are communicated with to passage 3, end face and the periphery of bit matrix 2 are respectively equipped with groove, in the groove of bit matrix 2 end faces, be provided with the wear-resisting brill tooth 5 that protrudes from bit matrix 2, the part that wear-resisting brill tooth 5 protrudes from outside bit matrix 2 is hemispherical structure, in the groove of bit matrix 2 peripheries, be provided with bit matrix 2 and keep smooth gauge teeth 6, wear-resisting brill tooth 5 and gauge teeth 6 are made by composite polycrystal-diamond and/or polycrystalline diamond.
Bit matrix 2 is evenly provided with a circle, and composite polycrystal-diamond is made up of cemented carbide substrate layer 7 and polycrystalline diamond layer 8, and the thickness of polycrystalline diamond layer 8 is 0.1~4.0mm.Gauge teeth 6 is cylindrical structural, and the external diameter of gauge teeth 6 is that 4mm~16mm, axial length are 6mm~10mm.The external diameter of wear-resisting brill tooth 5 and gauge teeth 6, length equidimension are the optimization technique parameters for economy and overall balance in application life.
The utility model in the time that work is used, connecting rod 1 plug in the middle of card drill sleeve and with card drill sleeve spline joint, pressure-air is sent to the work plane of bit matrix 2 by straight three slanted channels 4 in passage 3 and bit matrix 2 in connecting rod 1.The utility model is that the high-wearing feature of composite polycrystal-diamond, polycrystalline diamond, stronger impact resistance are applied on down-the-hold drill bit, the external diameter of having guaranteed bit matrix 2 keeps constant size in long use procedure, guarantee the size in aperture, thereby improve operating efficiency, extend the application life of down-the-hold drill bit, reduce the replacing number of times of down-the-hold drill bit, and then reduced construction cost, increased work efficiency.
Above-described embodiment is not done any pro forma restriction to shape of the present utility model, material, structure etc.; any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all belong to the protection domain of technical solutions of the utility model.

Claims (3)

1. gauge down-the-hold drill bit, comprise the connecting rod with external splines structure, connecting rod external surface is along the jump-ring slot that is circumferentially with annular, connecting rod one end is provided with bit matrix, the connecting rod other end is provided with one vertically directly to passage, in bit matrix, be provided with inner all with straight three slanted channels to channel connection, it is characterized in that: end face and the periphery of described bit matrix are respectively equipped with groove, in the groove of bit matrix end face, be provided with the wear-resisting brill tooth that protrudes from bit matrix, the part that wear-resisting brill tooth protrudes from outside bit matrix is hemispherical structure, in the groove of bit matrix periphery, be provided with bit matrix and keep smooth gauge teeth, wear-resisting brill tooth and gauge teeth are made by composite polycrystal-diamond and/or polycrystalline diamond.
2. gauge down-the-hold drill bit according to claim 1, is characterized in that: described bit matrix is evenly provided with a circle, composite polycrystal-diamond is made up of cemented carbide substrate layer and polycrystalline diamond layer, and the thickness of polycrystalline diamond layer is 0.1~4.0mm.
3. gauge down-the-hold drill bit according to claim 1 and 2, is characterized in that: described gauge teeth is cylindrical structural, and the external diameter of gauge teeth is that 4mm~16mm, axial length are 6mm~10mm.
CN201420295137.XU 2014-06-05 2014-06-05 Gauge protection down-the-hole drill bit Expired - Fee Related CN203867471U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420295137.XU CN203867471U (en) 2014-06-05 2014-06-05 Gauge protection down-the-hole drill bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420295137.XU CN203867471U (en) 2014-06-05 2014-06-05 Gauge protection down-the-hole drill bit

Publications (1)

Publication Number Publication Date
CN203867471U true CN203867471U (en) 2014-10-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420295137.XU Expired - Fee Related CN203867471U (en) 2014-06-05 2014-06-05 Gauge protection down-the-hole drill bit

Country Status (1)

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CN (1) CN203867471U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107214372A (en) * 2017-05-26 2017-09-29 无锡钻探工具厂有限公司 A kind of edge ring glomerocryst and its processing method for long-life bit gauge protection
CN111270998A (en) * 2018-12-05 2020-06-12 武穴市金锐精密锻造有限公司 Durable down-the-hole drill bit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107214372A (en) * 2017-05-26 2017-09-29 无锡钻探工具厂有限公司 A kind of edge ring glomerocryst and its processing method for long-life bit gauge protection
CN107214372B (en) * 2017-05-26 2019-11-19 无锡钻探工具厂有限公司 A kind of processing method of the edge ring plycrystalline diamond for long-life bit gauge protection
CN111270998A (en) * 2018-12-05 2020-06-12 武穴市金锐精密锻造有限公司 Durable down-the-hole drill bit

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C14 Grant of patent or utility model
GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141008

Termination date: 20150605