CN208885192U - A kind of drill bit that point knuckle-tooth wing is spaced apart - Google Patents
A kind of drill bit that point knuckle-tooth wing is spaced apart Download PDFInfo
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- CN208885192U CN208885192U CN201821635809.1U CN201821635809U CN208885192U CN 208885192 U CN208885192 U CN 208885192U CN 201821635809 U CN201821635809 U CN 201821635809U CN 208885192 U CN208885192 U CN 208885192U
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- drill bit
- spaced apart
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Abstract
The utility model discloses a kind of drill bits that sharp knuckle-tooth wing is spaced apart, including drill body, drill body is equipped with multiple first wings and multiple second wings, and multiple first wings and multiple second wings are interspersed around the central axis circle spacing of drill body；Multiple sharp cutting tooths are distributed on first wing, multiple round cutting tooths are distributed on the second wing.The drill bit that the sharp knuckle-tooth wing of the utility model is spaced apart, the first wing with sharp cutting tooth are distributed on drill body with having the second wing of circle cutting tooth, increase the aggressiveness and stability of drill bit.
Description
Technical field
The utility model relates to bit technique field more particularly to a kind of drill bits that sharp knuckle-tooth wing is spaced apart.
Background technique
Currently, generalling use drill bit in oil drilling to carry out, with going deep into for drill bit, rock stratum is more and more harder, to brill
The requirement of cutting tooth on head is also higher and higher.But the cutting tooth that wing is distributed on existing drill bit mainly still selects list
One circle cutting tooth or single sharp cutting tooth, and single its aggressiveness of circle cutting tooth is poor, causes broken rock speed low；And
Then stability is poor for single sharp cutting tooth, and drill bit is prone to wear.
Utility model content
For overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of sharp knuckle-tooth wings to be spaced apart
Drill bit, the first wing with sharp cutting tooth is distributed on drill body with having the second wing of circle cutting tooth,
Increase the aggressiveness and stability of drill bit.
The purpose of this utility model is implemented with the following technical solutions:
A kind of drill bit that point knuckle-tooth wing is spaced apart, including drill body, drill body are equipped with multiple first wings
And multiple second wings, multiple first wings and multiple second wings interlock around the central axis circle spacing of drill body
Distribution；Multiple sharp cutting tooths are distributed on first wing, multiple round cutting tooths are distributed on the second wing.
Preferably, the sharp cutting tooth on multiple first wings is distributed on drill body circumferencial direction as counterclockwise, multiple
The circle cutting tooth of second wing is on drill body circumferencial direction by distribution clockwise.
Preferably, the top rake of the sharp cutting tooth on each first wing is 5 ° -10 °.
Preferably, there are three the second wing is set, four round cutting tooths, two of them are distributed on each second wing
The back rake angle of circle cutting tooth on two wings is from top to bottom followed successively by 12 °, 14 °, 16 °, 18 °；On another second wing
The back rake angle of circle cutting tooth is from top to bottom followed successively by 13 °, 15 °, 17 °, 19 °.
Preferably, the bottom end of each first wing and each second wing is equipped with gauge block, and gauge is cut on gauge block
Tooth, the back rake angle of gage cutters are 25 °.
Preferably, in the two neighboring sharp cutting tooth of each first wing, the sharp cutting tooth positioned at front end is exposed to the first knife
The height of the wing is 1.5mm bigger than the height that the sharp cutting tooth positioned at rear end is exposed to the first wing.
Preferably, in the two neighboring sharp cutting tooth of each second wing, the circle cutting tooth positioned at front end is exposed to the second knife
The height of the wing is 1.5mm bigger than the height that the circle cutting tooth positioned at rear end is exposed to the second wing.
Preferably, drill body is equipped with nozzle, two adjacent the first wings and two adjacent the second wings it
Between be distributed with the nozzle.
Preferably, the length of the first wing is greater than the length of the second wing.
Compared with prior art, the utility model has the beneficial effects that: being all distributed on the first wing on its drill body
Sharp cutting tooth makes drill body have aggressiveness；And circle cutting tooth is all distributed on the second wing, there is drill body and stablize
Property；The first wing i.e. with sharp cutting tooth is distributed on drill body with having the second wing of circle cutting tooth, is increased
The aggressiveness and stability of drill bit.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the top view of the utility model.
In figure: 10, drill body；11, nozzle；20, the first wing；21, sharp cutting tooth；30, the second wing；31, circle is cut
Cut tooth；40, gauge block；41, gage cutters.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the utility model:
The drill bit that a kind of sharp knuckle-tooth wing as shown in Figure 1 and Figure 2 is spaced apart, including drill body 10, drill bit sheet
Body 10 is equipped with multiple first wings 20 and multiple second wings 30, multiple first wings 20 and multiple second wings 30
The central axis circle spacing around drill body 10 is interspersed, i.e., one the is distributed between two adjacent first wings 20
Multiple circle cuttings are distributed in addition, multiple sharp cutting tooths 21 are distributed on the first wing 20 in two wings 30 on second wing 30
Tooth 31.In this structure basis, it is all distributed sharp cutting tooth 21 on the first wing 20 on drill body 10, has drill body 10
There is aggressiveness；And circle cutting tooth 31 is all distributed on the second wing 30, make drill body 10 that there is stability；There is sharp cutting tooth
21 the first wing 20 is distributed on drill body 10 with having the second wing 30 of circle cutting tooth 31, increases drill bit
Aggressive and stability.
Preferably, in the present embodiment, the sharp cutting tooth 21 on above-mentioned multiple first wings 20 is in 10 circumference of drill body
By distribution counterclockwise on direction, and the circle cutting tooth 31 of multiple second wings 30 is pressed clockwise on 10 circumferencial direction of drill body
Distribution, in this way, multiple point cutting tooth 21 and multiple round cutting tooths 31 arragement directions in a circumferential direction on the contrary, stationarity more
It is good.
Preferably, the top rake of the sharp cutting tooth 21 on each first wing 20 is 5 ° -10 °, can increase attack strength.
Preferably, there are three the second wing 30 is set, four round cutting tooths 31 are distributed on each second wing 30, wherein
The back rake angle of circle cutting tooth 31 on two the second wings 30 is from top to bottom followed successively by 12 °, 14 °, 16 °, 18 °；Another
The back rake angle of circle cutting tooth 31 on two wings 30 is from top to bottom followed successively by 13 °, 15 °, 17 °, 19 °, i other words, drill body 10
On circle cutting tooth 31 whole back rake angle it is smaller, the aggressiveness of drill bit can be increased, higher rate of penetration can be obtained.
Preferably, the bottom end of each first wing 20 and each second wing 30 is equipped with gauge block 40, on gauge block 40
Gage cutters 41, the back rake angles of gage cutters 41 are 25 °, have not only increased the stability of drill bit, but also can be effectively protected the
Cutting tooth on one wing 20 and the second wing 30.
Preferably, in the two neighboring sharp cutting tooth 21 of each first wing 20, the sharp cutting tooth 21 positioned at front end is exposed to
The height of first wing 20 is 1.5mm bigger than the height that the sharp cutting tooth 21 positioned at rear end is exposed to the first wing 20.Likewise, each
In a two neighboring sharp cutting tooth 21 of second wing 30, the circle cutting tooth 31 positioned at front end is exposed to the height ratio of the second wing 30
Circle cutting tooth 31 positioned at rear end is exposed to the big 1.5mm of height of the second wing 30, can not only increase the aggressiveness of drill bit, but also can be with
Cutting tooth is protected to increase bit life.
Preferably, drill body 10 is equipped with nozzle 11, two adjacent the first wings 20 and adjacent two second
The nozzle 11 is distributed between wing 30, in this way, the phenomenon that bit balling can be effectively prevented in the hydro science arrangement of optimization,
Higher rate of penetration can be obtained in mud stone section.
Preferably, the length of the first wing 20 is greater than the length of the second wing 30, convenient for effective use drill body 10
Volume, it is more reasonable to be distributed.
It will be apparent to those skilled in the art that can make various other according to the above description of the technical scheme and ideas
Corresponding change and deformation, and all these changes and deformation all should belong to the protection of the utility model claims
Within the scope of.
Claims (9)
1. a kind of drill bit that point knuckle-tooth wing is spaced apart, which is characterized in that including drill body, drill body is equipped with multiple
The central axis circumference of first wing and multiple second wings, multiple first wings and multiple second wings around drill body
Interleaved distribution；Multiple sharp cutting tooths are distributed on first wing, multiple round cutting tooths are distributed on the second wing.
2. the drill bit that point knuckle-tooth wing as described in claim 1 is spaced apart, which is characterized in that the point on multiple first wings
Cutting tooth is by distribution counterclockwise on drill body circumferencial direction, and the circle cutting tooth of multiple second wings is in drill body circumference side
Upwards by distribution clockwise.
3. the drill bit that point knuckle-tooth wing as described in claim 1 is spaced apart, which is characterized in that the point on each first wing
The top rake of cutting tooth is 5 ° -10 °.
4. the drill bit that point knuckle-tooth wing as described in claim 1 is spaced apart, which is characterized in that there are three the second wing is set,
Four round cutting tooths are distributed on each second wing, the back rake angle of the circle cutting tooth on the second wing of two of them is by upper
12 °, 14 °, 16 °, 18 ° are followed successively by under；The back rake angle of circle cutting tooth on another second wing is from top to bottom followed successively by
13°、15°、17°、19°。
5. the drill bit that point knuckle-tooth wing as described in claim 1 is spaced apart, which is characterized in that each first wing and each
The bottom end of second wing is equipped with gauge block, gage cutters on gauge block, and the back rake angle of gage cutters is 25 °.
6. the drill bit that point knuckle-tooth wing as described in claim 1 is spaced apart, which is characterized in that each first wing adjacent two
In a point cutting tooth, the height that the sharp cutting tooth positioned at front end is exposed to the first wing is exposed to than being located at the sharp cutting tooth of rear end
The big 1.5mm of the height of first wing.
7. the drill bit that point knuckle-tooth wing as described in claim 1 is spaced apart, which is characterized in that each second wing adjacent two
In a point cutting tooth, the height that the circle cutting tooth positioned at front end is exposed to the second wing is exposed to than being located at the circle cutting tooth of rear end
The big 1.5mm of the height of second wing.
8. the drill bit that point knuckle-tooth wing as described in claim 1 is spaced apart, which is characterized in that drill body is equipped with spray
Mouth is distributed with the nozzle between two adjacent the first wings and two adjacent the second wings.
9. the drill bit that point knuckle-tooth wing as described in claim 1 is spaced apart, which is characterized in that the length of the first wing is greater than
The length of second wing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821635809.1U CN208885192U (en) | 2018-10-09 | 2018-10-09 | A kind of drill bit that point knuckle-tooth wing is spaced apart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821635809.1U CN208885192U (en) | 2018-10-09 | 2018-10-09 | A kind of drill bit that point knuckle-tooth wing is spaced apart |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208885192U true CN208885192U (en) | 2019-05-21 |
Family
ID=66515439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821635809.1U Active CN208885192U (en) | 2018-10-09 | 2018-10-09 | A kind of drill bit that point knuckle-tooth wing is spaced apart |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208885192U (en) |
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2018
- 2018-10-09 CN CN201821635809.1U patent/CN208885192U/en active Active
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