CN208122767U - A kind of active radius retention pad structure of diamond bit - Google Patents
A kind of active radius retention pad structure of diamond bit Download PDFInfo
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- CN208122767U CN208122767U CN201820633416.0U CN201820633416U CN208122767U CN 208122767 U CN208122767 U CN 208122767U CN 201820633416 U CN201820633416 U CN 201820633416U CN 208122767 U CN208122767 U CN 208122767U
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- hard
- active
- diamond bit
- pad
- hard alloy
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Abstract
The utility model discloses a kind of active radius retention pad structures of diamond bit, belong to diamond bit technical field, lead to the technical problems such as the serious service life reduction of drill bit undergauge for solving existing diamond bit gauge pad low efficiency.The upper of each wing on bit body is arranged in active radius retention pad structure, several longitudinally adjacent cutting tooths are installed on wing, channel is cut by the row of being formed between adjacent wing, bit body upper surface and row, which cut, is arranged hole for water spraying on channel, the work side of active gage pad is equipped with wearing layer, the hard-metal insert with cutting power of the wear-resisting axially disposed ordered series of numbers arrangement of layer surface, Milling Machining has the first hard alloy item between adjacent hard-metal insert, hard-metal insert and the first hard alloy item interval arranged adjacent, Milling Machining has the second hard alloy item on the one side adjacent with the work side of the active gage pad.The utility model effectively improves the service efficiency of gauge pad, prevents drill bit undergauge, effectively reduces rotational resistance between gauge pad and the borehole wall.
Description
Technical field
The utility model relates to diamond bit technical fields, and in particular to a kind of active gage pad knot of diamond bit
Structure.
Background technique
Diamond bit is a kind of drilling tool for strata drilling, and in recent years, diamond bit is in strata drilling work
It is had been widely used in journey.Diamond bit is made of bit body, cutting tooth, gauge pad and hydraulic structure etc., it is logical
It crosses contact of its cutting tooth with formation rock and generates extruding to it and shear rock stratum and carry out fractured rock.
Diamond bit is worn when drilling well works due to constantly contacting with formation rock, straight so as to cause drill bit
Diameter reduces, i.e., so-called " undergauge ", " undergauge " occurs during the work time in drill bit in order to prevent, the rotation generated when reducing bit operation
Turn frictional resistance, reduces the rotation torque of drill bit.The prior art is that a certain number of gauge pads are disposed on the outside of drill bit,
Heap is welded with wearable hard alloy material on gauge pad, or is installed with wear-resisting, shock proof wear-resistant material block.The pass of this structure
Key is to equal wear-resisting, the impact-resistant insert of edge, such as hard alloy blocks on the gauge pad of drill bit, then by being machined hand
Section, such as with grinding machine gauge pad, keep surface smooth, to have the function that the friction for reducing gauge pad and the borehole wall.It
Under the premise of maintaining original directional well drill bit Tooth arrangement design constant, it can make drill bit that there is stronger lateral cutting ability, but only
It can guarantee the gauge ability of drill bit, and be extremely difficult to reduce effect of the friction to reduce torque, because drill bit works in shaft bottom
When gauge pad surface be under the long-term corrasion of rock of borehole, often its surface just becomes very thick after a period of use
Rough, reverse side increases friction.Or the method using " segmented " gauge in the prior art, i.e., it is designed on same gauge pad
One gauge is divided into several segments of different sizes by the part of different-diameter, gauge pad and the borehole wall when reducing initial in this way
Contact area can play the role of certain reduction spin friction torque, but first is that being to work as drill bit the shortcomings that this method
After gauge pad abrasion to a certain extent, each section diameter of gauge pad just becomes the same, just becomes with the contact resistance of the borehole wall
It is high as normal drill bit, second is that the gauge pad limited length of drill bit, can only reduce drill bit public affairs to achieve the purpose that " to be segmented "
The length for claiming diameter segment gauge pad (i.e. first order gauge), reduces the initial gauge ability of drill bit instead in this way, makes " undergauge "
A possibility that phenomenon occurs greatly improves.
Therefore, in order to improve the service efficiency of gauge pad, it is effectively prevent drill bit undergauge, while reaching reduction friction, reducing
The purpose of rotational resistance between gauge pad and the borehole wall, the utility model provide a kind of active radius retention pad structure of diamond bit.
Utility model content
Lead to the technical problems such as the serious service life reduction of drill bit undergauge to solve existing diamond bit gauge pad low efficiency,
The utility model provides a kind of active radius retention pad structure of diamond bit.
A kind of active radius retention pad structure of diamond bit, the structure setting are installed on wing on the wing of bit body
There are several longitudinally adjacent cutting tooths, channel is cut by the row of being formed between adjacent wing, and bit body upper surface and row cut and set on channel
It is equipped with hole for water spraying, the work side of the active gage pad is equipped with wearing layer, and wear-resisting layer surface is axially disposed ordered series of numbers row
The hard-metal insert of cloth, Milling Machining has the first hard alloy item, hard-metal insert and first between the adjacent hard-metal insert
Hard alloy item interval arranged adjacent, Milling Machining has second hard on the one side adjacent with the work side of the active gage pad
Matter alloy bar.
Utility model works principle：When diamond bit carries out drilling well work, when drilling bit high-speed rotary, cutting tooth pair
Formation rock is ground, is cut, broken formation, and drill bit active gage pad work side is contacted with the borehole wall, what is constantly crept into
In the process, the wearing layer on active gage pad work side is contacted with rock mass, bears rock mass pressure, the hard alloy on wearing layer
Tooth cuts rock mass, and drill bit is made to have stronger lateral cutting ability, while playing and bit body is supported to prevent drill bit " undergauge ", together
When have the function of cut the borehole wall, but active gage pad work side on hard-metal insert due to being contacted for a long time with the borehole wall,
Serious wear eventually polishes with active gage pad work side, " undergauge " is easy to produce, therefore, in adjacent hard-metal insert
Between the first hard alloy item of Milling Machining so that hard-metal insert and the first hard alloy item interval arranged adjacent, thus set
It sets, the first hard alloy item on active gage pad work side is made to take the lead in contacting with the borehole wall, support bit body and the cutting borehole wall,
After the first hard alloy item is worn, hard-metal insert can also continue to play the role of cutting the borehole wall, increase gold as a result,
The service life of hard rock drill bit avoids " undergauge " phenomenon from occurring to early.Cutting formation rock is rotated in diamond bit wing
Meanwhile second hard alloy item can the formation rock broken to cutting carry out second-time breakage, reduce fractured rock and active protected
The abrasion of diameter pad working face.
Preferably, surfacing has cushion on the another side adjacent with the work side of the active gage pad.Cushion
The adjacent one side in active gage pad work side is set, is the one side opposite with diamond bit wing direction of rotation,
The adjacent one side in work side with the active gage pad is then arranged in second hard alloy item, i.e., with diamond bit knife
The consistent one side in wing direction of rotation.When diamond bit work, cutter breaking rock generates a large amount of rock fragments, with active
Hard-metal insert and the first hard alloy item on gauge pad carry out rock fragment caused by cutting to the borehole wall and hit drill bit together
The wing of body, the setting of cushion can mitigate shock of the rock fragment to wing and gauge pad to a certain extent, increase and protect
The service life of diameter pad and diamond bit influences to bore since rock crash causes drill bit to generate vibration when reducing bit operation
Into.
Preferably, the wearing layer is made of wearable hard alloy material of the surfacing on active gage pad.
Preferably, the hard alloy tooth crest is spherical in shape or conisphere shape.The top of hard-metal insert is spherical in shape or conisphere
Shape can reduce the rotational resistance between gauge pad and the borehole wall.
Preferably, the first hard alloy item and the second hard alloy surface are in smooth sphere or multi-prismatic surface.The
One hard alloy item and the second hard alloy surface are in smooth sphere or multi-prismatic surface, can be reduced between gauge pad and the borehole wall
Rotational resistance
Preferably, the width of the first hard alloy item and the second hard alloy item is 5-10mm.
Preferably, first hard alloy surface is higher than hard alloy tooth surface.
Preferably, the second hard alloy item is at least 2.
Preferably, the vibration damping section arranged in parallel with cutting tooth is additionally provided on the wing.
Preferably, the wing of the diamond bit is 5.
The utility model has an advantageous effect in that compared with prior art：
1, the utility model drill bit at work, grind formation rock, cut, broken formation, drill bit by cutting tooth
Active gage pad work side is contacted with the borehole wall, wearing layer during continuous drilling, on active gage pad work side
It is contacted with rock mass, bears rock mass pressure, the hard-metal insert on wearing layer cuts rock mass, and drill bit is made to have stronger side cut
Ability is cut, while playing support bit body to prevent drill bit " undergauge ", while having the function of cutting the borehole wall.Due to active gage pad
The hard-metal insert to work on side with the borehole wall due to contacting for a long time, serious wear, and eventually work with active gage pad side
It polishes, is easy to produce " undergauge ", therefore, the first hard alloy item of Milling Machining between adjacent hard-metal insert, so that hard
Carbide button and the first hard alloy item interval arranged adjacent, are thus arranged, and make the first hard on active gage pad work side
Alloy bar takes the lead in contacting with the borehole wall, support bit body and the cutting borehole wall, after the first hard alloy item is worn, hard-metal insert
It can also continue to play the role of cutting the borehole wall, increase the service life of diamond bit as a result, avoid " undergauge " phenomenon mistake
It is early to occur.While diamond bit wing rotates cutting formation rock, what the second hard alloy item can be broken to cutting
Formation rock carries out second-time breakage, reduces abrasion of the fractured rock to active gage pad working face.
2, when the diamond bit work of the utility model, cutter breaking rock generates a large amount of rock fragments, with active gage
Hard-metal insert and the first hard alloy item on pad carry out rock fragment caused by cutting to the borehole wall and hit bit body together
Wing, the setting of cushion can mitigate shock of the rock fragment to wing and gauge pad to a certain extent, increase gauge pad
And the service life of diamond bit influences to creep into since rock crash causes drill bit to generate vibration when reducing bit operation.
3, the top of the utility model hard-metal insert is spherical in shape or conisphere shape, can reduce the rotation between gauge pad and the borehole wall
Turn resistance.
4, the utility model the first hard alloy item and the second hard alloy surface are in smooth sphere or multi-prismatic surface, energy
Enough reduce the rotational resistance between gauge pad and the borehole wall.
5, the utility model can effectively improve the service efficiency of gauge pad, effectively prevent drill bit undergauge, while reaching and subtracting
The purpose of rotational resistance between small friction, reduction gauge pad and the borehole wall.
Detailed description of the invention
Fig. 1 is the active radius retention pad structure schematic diagram of the utility model embodiment 1；
Fig. 2 is the active radius retention pad structure schematic diagram of the utility model embodiment 2；
Fig. 3 is the utility model the first hard alloy item and the second hard alloy smooth sphere structural schematic diagram；
Fig. 4 is the utility model the first hard alloy item and the second hard alloy multi-prismatic surface structural schematic diagram；
Fig. 5 is the utility model hard alloy tooth crest conisphere shape structural schematic diagram；
Fig. 6 is the utility model hard alloy tooth crest spherical structure schematic diagram.
It is marked in figure：1- wing, 2- cutting tooth, 3- wearing layer, 4- vibration damping section, 5- hole for water spraying, 6- hard-metal insert, 7-
One hard alloy item, 8- the second hard alloy item, 9- cushion.
Specific embodiment
Below with reference to embodiment, the utility model will be further described, and described embodiment is only that this is practical new
Type a part of the embodiment is not whole embodiment.Based on the embodiments of the present invention, the ordinary skill people of this field
Member's other embodiments used obtained without making creative work, belong to the protection model of the utility model
It encloses.
Embodiment 1
As shown in Figure 1, a kind of active radius retention pad structure of diamond bit, the structure setting on the wing 1 of bit body,
The wing 1 of diamond bit is 5, is equipped with several longitudinally adjacent cutting tooths 2 on each wing 1, between adjacent wing 1
Channel is cut by the row of being formed, and bit body upper surface and row cut and be provided with hole for water spraying 5 on channel, the work side of the active gage pad
Equipped with wearing layer 3, wearing layer 3 is made of wearable hard alloy material of the surfacing on active gage pad, and 3 surface of wearing layer is along axis
To the hard-metal insert 6 for being provided with ordered series of numbers arrangement, Milling Machining has the first hard alloy item 7 between the adjacent hard-metal insert 6,
Hard-metal insert 6 and the first hard alloy item 7 are spaced arranged adjacent, the side adjacent with the work side of the active gage pad
Milling Machining has the second hard alloy item 8 on face.Active gage pad have in the wellbore support drill bit with guarantee drill bit stabilization and
Prevent drill bit from leading to the effect of drill bit " undergauge " because of the abrasion of subsurface rock.
First hard alloy item, 7 surface is higher than 6 surface of hard-metal insert.
The vibration damping section 4 arranged in parallel with cutting tooth 2 is additionally provided on the wing 1.
The present embodiment working principle：When diamond bit carries out drilling well work, when drilling bit high-speed rotary, cutting tooth 2 is right
Formation rock is ground, is cut, broken formation, and drill bit active gage pad work side is contacted with the borehole wall, what is constantly crept into
In the process, the wearing layer 3 on active gage pad work side is contacted with rock mass, bears rock mass pressure, and the hard on wearing layer 3 closes
Golden tooth 6 cuts rock mass, and drill bit is made to have stronger lateral cutting ability, while playing support bit body prevents drill bit from " contracting
Diameter ", while having the function of cutting the borehole wall, but the hard-metal insert 6 on active gage pad work side is due to long-term and well
Wall contact, serious wear eventually polish with active gage pad work side, " undergauge " are easy to produce, therefore, in adjacent hard
The first hard alloy item 7 of Milling Machining between carbide button 6, so that hard-metal insert 6 and the first hard alloy item 7 are spaced adjacent row
Thus cloth is arranged, make the first hard alloy item 7 on active gage pad work side take the lead in contacting with the borehole wall, support bit body
With the cutting borehole wall, after the first hard alloy item 7 is worn, hard-metal insert 6 can also continue to play the role of cutting the borehole wall,
The service life for increasing diamond bit as a result, avoids " undergauge " phenomenon from occurring to early.It is cut in the rotation of diamond bit wing
While cutting formation rock, the second hard alloy item 8 can carry out second-time breakage to the broken formation rock of cutting, reduce broken
Abrasion of the rock to active gage pad working face.
Embodiment 2
It is advanced optimized as shown in Fig. 2, the present embodiment is based on embodiment 1, specific embodiment is as follows：
The work side of the active gage pad is equipped with wearing layer 3, and 3 surface of wearing layer is axially disposed ordered series of numbers arrangement
The hard-metal insert 6 with cutting power, wearable hard alloy material of the wearing layer 3 by surfacing on active gage pad
Composition.
In the present embodiment, the difference from embodiment 1 is that hard-metal insert 6 is ordered series of numbers arrangement setting, when drill bit is revolving
It changes a job when making, the wearing layer 3 on active gage pad is first contacted with rock mass, then described with cutting to bear the pressure of rock mass
The hard-metal insert 6 for cutting ability cuts rock mass, and drill bit is made to have stronger lateral cutting ability.This setup can make
The lateral cutting ability of drill bit is further enhanced, and the rotational resistance between drill bit and the borehole wall also further decreases.
Embodiment 3
As shown in Figure 3, Figure 4, the present embodiment is based on embodiment 1 and embodiment 2 advanced optimizes, and specific embodiment is such as
Under：
The first hard alloy item 7 and 8 surface of the second hard alloy item are in smooth sphere or multi-prismatic surface.
In the present embodiment, the first hard alloy item 7 and 8 surface of the second hard alloy item are in smooth sphere or multi-prismatic surface,
The rotational resistance between gauge pad and the borehole wall can be reduced.
Embodiment 4
The present embodiment is based on embodiment 3 and advanced optimizes, and specific embodiment is as follows：
The width of the first hard alloy item 7 and the second hard alloy item 8 is 8mm.
The second hard alloy item 8 is at least 2.
In the present embodiment, the first hard alloy item 7 and 8 width of the second hard alloy item are preferably 8mm, increase gauge pad
Service life extends the time of the first hard alloy item 7 and the second hard alloy item 8 cutting broken rock.
Embodiment 5
As shown in Figure 5 and Figure 6, the present embodiment is based on embodiment 1 and embodiment 2 advanced optimizes, specific embodiment
It is as follows：
The 6 spherical in shape or conisphere shape in top of hard-metal insert.
In the present embodiment, the top of hard-metal insert 6 is spherical in shape or conisphere shape, can reduce the rotation between gauge pad and the borehole wall
Turn resistance.
Embodiment 6
As shown in Figure 1 and Figure 2, the present embodiment is based on embodiment 1 and embodiment 2 advanced optimizes, and specific embodiment is such as
Under：
Surfacing has cushion 9 on the another side adjacent with the work side of the active gage pad.
In the present embodiment, the adjacent one side in active gage pad work side is arranged in cushion 9, is and diamond bit
The work side phase with the active gage pad is then arranged in the opposite one side in wing direction of rotation, the second hard alloy item 8
Adjacent one side, the i.e. one side consistent with diamond bit wing direction of rotation.When diamond bit work, cutting tooth
Broken rock generates a large amount of rock fragments, on active gage pad hard-metal insert 6 and the first hard alloy item 7 borehole wall is cut
The rock fragment for cutting generation hits the wing of bit body together, and it is broken that the setting of cushion 9 can mitigate to a certain extent rock
Shock of the block to wing and gauge pad increases the service life of gauge pad and diamond bit, due to rock when reducing bit operation
Stone shock causes drill bit to generate vibration, influences to creep into.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (10)
1. a kind of active radius retention pad structure of diamond bit, the structure setting is on the wing (1) of bit body, on wing (1)
Several longitudinally adjacent cutting tooths (2) are installed, channel, bit body upper surface and row cut in the row of being formed between adjacent wing (1)
It cuts and is provided with hole for water spraying (5) on channel, it is characterised in that：The work side of the active gage pad is equipped with wearing layer (3), resistance to
The axially disposed hard-metal insert (6) for having ordered series of numbers to arrange in layer (3) surface is ground, milling adds between the adjacent hard-metal insert (6)
Work has the first hard alloy item (7), and hard-metal insert (6) and the first hard alloy item (7) are spaced arranged adjacent, with the active
Milling Machining has the second hard alloy item (8) on the adjacent one side in work side of gauge pad.
2. a kind of active radius retention pad structure of diamond bit according to claim 1, it is characterised in that：With the active
Surfacing has cushion (9) on the adjacent another side in work side of gauge pad.
3. a kind of active radius retention pad structure of diamond bit according to claim 1, it is characterised in that：The wearing layer
(3) it is made of wearable hard alloy material of the surfacing on active gage pad.
4. a kind of active radius retention pad structure of diamond bit according to claim 1, it is characterised in that：The hard closes
Spherical in shape or conisphere shape at the top of golden tooth (6).
5. a kind of active radius retention pad structure of diamond bit according to claim 1, it is characterised in that：Described first is hard
Matter alloy bar (7) and the second hard alloy item (8) surface are in smooth sphere or multi-prismatic surface.
6. a kind of active radius retention pad structure of diamond bit according to claim 5, it is characterised in that：Described first is hard
The width of matter alloy bar (7) and the second hard alloy item (8) is 5-10mm.
7. a kind of active radius retention pad structure of diamond bit according to claim 1, it is characterised in that：Described first is hard
Matter alloy bar (7) surface is higher than hard-metal insert (6) surface.
8. a kind of active radius retention pad structure of diamond bit according to claim 1, it is characterised in that：Described second is hard
Matter alloy bar (8) is at least 2.
9. a kind of active radius retention pad structure of diamond bit according to claim 1, it is characterised in that：The wing
(1) it is additionally provided on and cutting tooth (2) vibration damping section (4) arranged in parallel.
10. a kind of active radius retention pad structure of diamond bit according to claim 1, it is characterised in that：The Buddha's warrior attendant
The wing (1) of aiguille is 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820633416.0U CN208122767U (en) | 2018-04-28 | 2018-04-28 | A kind of active radius retention pad structure of diamond bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820633416.0U CN208122767U (en) | 2018-04-28 | 2018-04-28 | A kind of active radius retention pad structure of diamond bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208122767U true CN208122767U (en) | 2018-11-20 |
Family
ID=64187169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820633416.0U Expired - Fee Related CN208122767U (en) | 2018-04-28 | 2018-04-28 | A kind of active radius retention pad structure of diamond bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208122767U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989714A (en) * | 2019-05-05 | 2019-07-09 | 中国地质大学（北京） | A kind of deep hard formation ultrahigh rotating speed drilling uses drill bit |
| 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 |
-
2018
- 2018-04-28 CN CN201820633416.0U patent/CN208122767U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109989714A (en) * | 2019-05-05 | 2019-07-09 | 中国地质大学（北京） | A kind of deep hard formation ultrahigh rotating speed drilling uses drill bit |
| CN109989714B (en) * | 2019-05-05 | 2024-01-23 | 中国地质大学（北京） | Drill bit for ultra-high rotation speed drilling of deep hard stratum |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181120 Termination date: 20200428 |
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| CF01 | Termination of patent right due to non-payment of annual fee |