CN108798527A - A kind of combination drill tool - Google Patents
A kind of combination drill tool Download PDFInfo
- Publication number
- CN108798527A CN108798527A CN201710285996.9A CN201710285996A CN108798527A CN 108798527 A CN108798527 A CN 108798527A CN 201710285996 A CN201710285996 A CN 201710285996A CN 108798527 A CN108798527 A CN 108798527A
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- Prior art keywords
- cutting
- hollow body
- cutter hub
- fin
- wing
- Prior art date
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- 238000005553 drilling Methods 0.000 claims abstract description 40
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 238000007711 solidification Methods 0.000 claims abstract description 16
- 230000008023 solidification Effects 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 239000000956 alloy Substances 0.000 claims abstract description 5
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 239000004568 cement Substances 0.000 abstract description 8
- 238000003756 stirring Methods 0.000 abstract description 8
- 239000011440 grout Substances 0.000 abstract description 7
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
- 238000010276 construction Methods 0.000 description 13
- 238000002156 mixing Methods 0.000 description 8
- 239000002689 soil Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 1
- 230000009918 complex formation Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000009955 starching Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
- E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Structural Engineering (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Earth Drilling (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A kind of combination drill tool includes hollow body, the first cutting wing, the second cutting wing, front end cutting body, multigroup paddle, wearing plate and sealing shroud containing coupling；Hollow body is equipped with Grouting Pipe, tracheae and solidification liquid pipe, and upper end is located at coupling retainer plate, lower end has valve；Sealing shroud is two way seal set, and half is placed in the scalariform counterbore of retainer plate, the other half is protruded in retainer plate upper surface；Multigroup paddle hollow body outer wall between the upper and lower every setting；The first and second cutting wings are with radial arrangement on hollow body outer wall；Front end cutting body is located at hollow body lower end outer surface；Wearing plate is installed in paddle, the first and second cutting wings and the concentric free end arc surface of hollow tube；First, second, and third cutting cutter hub is made of hard alloy blocks.The present invention has the characteristics that cutting cutter hub intensity is high, drilling ability is big, stirring is abundant and cement grout, high pressure gas and solidify liquid are injected separately into, and effectively improves drilling efficiency and safety.
Description
Technical field
It is the invention belongs to a kind of drilling tool, more particularly to a kind of to be reinforced for diaphram wall construction, soft soil foundation improvement
The combination drill tool of mixing pile drilling machine.
Background technology
With the rapid development of the national economy, Construction of Urban Rail Traffic, underground are being accelerated in China main cities now
The urban infrastructures such as utilization, the isolation of rubbish heap buried place and the river dyke foundation stabilization in space, wherein often answer
With a kind of shaped steel cement-soil composite mixing pile construction technology（That is SMW construction of diaphragm walls technique）, driven and connected using power head
It is connected on the hollow drill pipe of its output shaft and hollow drilling tool, drilling is carried out using front cutter hub after drilling tool rotation and stirring is constructed, such as
During construction of diaphragm wall, drilling stirring in drilling tool one side sprays into high pressure gas, solidify liquid to underground on one side, to accelerate
The flowing and stirring of underground spray into certain ratio after drilling and agitating procedure are completed by hollow drill pipe and hollow drilling tool
The cement mortar of example finally extracts whole drilling rods and drilling tool, removes drilling machine and is inserted into shaped steel, contains cement in diaphram wall groove body
The original place soil of slurries forms a diaphram wall body through maintenance after a period of time.This SMW construction of diaphragm wall work
Skill has good, small to ambient enviroment and effect on building, the big wall thickness of sealing performance and big depth and construction period and low cost
The features such as and widely applied and promoted.
Existing mixing pile drilling machine during carrying out construction of diaphragm wall, need to be equipped with a set of supply cement grout,
The background system of pressure-air and solidify liquid, and convey slurry liquid, pressure-air and solidification liquid pipeline and drilling machine driving power
The swivel joint connection of head upper end, swivel joint are communicated with the inner cavity of drilling rod and drilling tool, when drilling tool is rotated with power head and drilling rod
When carrying out drilling, stirring to original place soil, injection solidify liquid, pressure-air and cement grout, since above-mentioned solidify liquid, high pressure are empty
The inner cavity of gas and the equal hollow drill pipe of cement grout one by one regulates and controls and is not directly injected into stage by stage, therefore, needs in the construction process
The switching of high pressure gas, solidify liquid and cement grout pipeline is carried out in power head upper end, thus be caused to construction personnel
It is greatly inconvenient, meanwhile, it the case where spillage often occurs in the junction of drilling rod and drilling tool, spraying high-pressure gas is hurted sb.'s feelings, deposits
In larger security risk.With being continuously increased for underground drilling depth, since complex formation, soft or hard soil are mingled with,
Mixing pile drills in driver drilling rod rotary drilling, promotion and whipping process, and bottom drilling tool bears the drilling of bigger and stirring hinders
Power so that cutter tip cutting edge and blade wear are serious, influence construction operation efficiency, cause soil stirring in original place in groove body uneven
It is even, to make the groove body quality of diaphram wall that cannot be effectively ensured.
Invention content
It is a primary object of the present invention to overcome existing mixing pile drilling machine there are the shortcomings that, a kind of cutter tip is provided
Hard intensity is high, cutting fin wear-resisting property is high, stirring is abundant, leakproofness is high and the combination drill tool of operation convenience, effectively protects
It demonstrate,proves drilling machine to apply solidify liquid, injection high pressure gas in different phase and spray into cement grout, to ensure construction of diaphragm wall
Quality and working security.
To achieve the above objectives, solution of the present invention is：
A kind of combination drill tool, the drilling tool include：
Hollow body is set to Grouting Pipe, tracheae and the solidification liquid pipe of hollow body inner cavity, is located at outside the bottom end cover of hollow body
First valve of end face, the second valve and third valve being located at below hollow body outer wall are located at the outer of hollow body upper end
Hex union, the hollow body outer wall have support slot；
The first cutting wing, including the first cutting cutter hub and the first fin；
The second cutting wing, including the second cutting cutter hub and the second fin；
Front end cutting body, including third cutting cutter hub and third hilt；
Multigroup paddle, wearing plate and sealing shroud；
It is characterized in that：
The Grouting Pipe, tracheae and solidification liquid pipe are parallel each other in the inner cavity of hollow body；The outer-hexagonal tip side
Retainer plate of the setting with scalariform counterbore at face；The Grouting Pipe, tracheae and solidification liquid pipe are each located on the scalariform of retainer plate
The lower part of counterbore is aerial, and the lower end of the Grouting Pipe connects the first valve, and the tracheae and solidification liquid pipe pass through its underpart respectively
The first bend pipe and the second bend pipe connect the second valve and third valve；The sealing shroud is two way seal set, is had outer up and down
Annular groove, interior each mounting O-shaped rings, its half are placed in the counterbore step of retainer plate, the other half is protruded in the upper of retainer plate
End face；
Multigroup paddle is and opposite between the upper and lower every on the hollow body outer wall of top for being arranged in the first cutting wing
Two groups of paddles are arranged to cruciform shape angle in 90 ° in the radial direction of hollow body；
The first cutting wing is double end form, is located on the hollow body below multigroup paddle, their the first fin exists
Its peripheral surface is arranged on hollow body in a manner of radial symmetric；In addition, in the double end of the first cutting wing, each head first
The first cutting cutter hub is arranged in upper each installation one to the first of fin below, except the first fin of each head cutting on the first following free end
Outside sharpener body disposed at equal distance, in other positions, first fin first it is following on the first cutting cutter hub position
With the first of the first fin of other end it is following on the position of the first cutting cutter hub be that space crossings arrange on rotational trajectory；
The second cutting wing is three capitiform formulas, is located on the hollow body below the first cutting wing, their the second fin exists
It is equiangularly arranged in its peripheral surface with radial direction on hollow body；In addition, in second cutting three of the wing, each head the
The 2nd cutting cutter hub is arranged in upper each installation one to the second of two fins below, except the second fin of each head is on the second following free end
Cut outside cutter hub disposed at equal distance, in other positions, first the second fin second it is following on the second cutting cutter hub
Under the second of the second fin of position and third head of the second cutting cutter hub on the second of position and first the second fin is following
While being that space crossings arrange on rotational trajectory；
The front end cutting body has several, is each located at spaced radial on the bottom end cover of hollow body, installation direction is
Its third cutting cutter hub is set to be mounted to the direction of rotation towards hollow body, the third of each front end cutting body cuts cutter hub
It is to be fixed on the lower end capping outer end face of hollow body by third hilt；
The wearing plate is installed in paddle, the first cutting wing, the second cutting wing and front end cutting body respectively and hollow body is same
The free end arc surface in axle center.
The present invention can be that the blade face of multigroup paddle tilts in one direction, the horizontal cross-section with hollow body
Between 1=35~45 ° of included angle B being formed.
The present invention is also possible that the first aerofoil of the first fin of each head of the first cutting wing inclines in one direction
Tiltedly, 2=40~55 ° of the included angle B formed between the horizontal cross-section of hollow body.
The present invention is also possible that the second aerofoil of the second fin of each head of the second cutting wing inclines in one direction
Tiltedly, 3=50~60 ° of the included angle B formed between the horizontal cross-section of hollow body.
The present invention is also possible that the second fin of each head of the second cutting wing is equipped with reinforcing rib and is connected to
On the peripheral surface of hollow body.
The present invention is also possible that the second cutting cutter hub of the first cutting cutter hub of the first cutting wing, the second cutting wing
Hard alloy is all made of with the third cutting cutter hub of front end cutting body to be made.
Description of the drawings
Fig. 1 is the structural schematic diagram of combination drill tool of the present invention；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is B-B direction sectional view in Fig. 2；
Fig. 4 is the upward view of Fig. 2；
Fig. 5 is the portions A partial enlarged view in Fig. 2；
Fig. 6 is the vertical view of Fig. 1, the main structure arrangement for showing outer-hexagonal fitting end.
Specific implementation mode
Combination drill tool of the present invention is further described below in conjunction with attached drawing.
A kind of combination drill tool, the drilling tool 1 include：Hollow body 10 is set to Grouting Pipe 11, the tracheae of hollow body inner cavity
12 are located at positioned at the first valve 15 of 14 outer end face of bottom end cover of hollow body below hollow body outer wall with solidification liquid pipe 13
The second valve 16 and third valve 17, be located at the outer-hexagonal connector 18 of hollow body upper end, the hollow body outer wall has
Support slot 19；The first cutting wing 3, including the first cutting cutter hub 31 and the first fin；The second cutting wing 4, including the second bite
Body 41 and the second fin；Front end cutting body 5, including third cutting cutter hub 51 and third hilt；Multigroup paddle 2, wearing plate 6 with
And sealing shroud 7；Wherein：
The Grouting Pipe 11, tracheae 12 and solidification liquid pipe 13 are parallel each other in the inner cavity of hollow body 10；It is described to be located at
Retainer plate 182 of 18 endface of the outer-hexagonal connector setting with scalariform counterbore 1821 of 10 upper end of hollow body；The Grouting Pipe
11, the upper end of tracheae 12 and solidification liquid pipe 13 is each located in the bottom hole of scalariform counterbore 1821 of retainer plate 182, the note
The lower end for starching pipe 11 connects the first valve 15, and the tracheae 12 and solidification liquid pipe 13 pass through first bend pipe 121 of its underpart respectively
The second valve 16 and third valve 17 are connected with the second bend pipe 131；The sealing shroud 7 is two way seal set, has upper and lower outer circle
Annular groove, interior each mounting O-shaped rings, its half are placed in the counterbore step 1821 of retainer plate 182, the other half is protruded in retainer plate
182 upper surface；
Multigroup paddle 2 between the upper and lower every on 10 outer wall of hollow body for the top for being arranged in the first cutting wing 3, and
Opposite two groups of paddles are arranged to cruciform shape angle in 90 ° in the radial direction of hollow body 10；Multigroup paddle 2
Blade face 21 tilt in one direction, 1=35~45 ° of the included angle B formed between the horizontal cross-section of hollow body 10；
The first cutting wing 3 is double end form, is located on the hollow body 10 of 2 lower section of multigroup paddle, their first wing
Piece is arranged in its peripheral surface on hollow body 10 in a manner of radial symmetric；In addition, in the double end of the first cutting wing 3, often
One the first fin 32, the first following 321 of 32', 321' it is upper it is each installation one arrange the first cutting cutter hub 31, remove first wing of each head
Piece 32,32 ' is outside 31 disposed at equal distance of cutting cutter hub on the first following free end, in other positions, first fin
On the position of the first cutting cutter hub 31 and the first following 321' of other end the first fin 32' on the first following 321 of 32
The position of first cutting cutter hub 31 is that space crossings arrange on rotational trajectory；Each head first of the first cutting wing 3
Fin 32,32' the first aerofoil 322 tilt in one direction, the included angle B 2 formed between the horizontal cross-section of hollow body 10=
40~55 °；
The second cutting wing 4 is three capitiform formulas, is located on the hollow body 10 of the first cutting wing, 3 lower section, their second wing
Piece is equiangularly arranged in its peripheral surface with radial direction on hollow body 10；In addition, in three of the second cutting wing 4,
The second fin of each head 42,42', 42 " second following 421,421', the 2nd cutting cutter hub 41 is arranged in each installation one on 421 ", remove
The second fin of each head 42,42', 42 " are outside 51 disposed at equal distance of cutting cutter hub on the second following free end, in other positions
On, first the second fin 42 second following 421 on the second cutting cutter hub 41 position with first the second fin 42''s
The second following 421 " of the second fin 42 " of position and third head of the second cutting cutter hub 41 on second following 421' is in rotation rail
It is that space crossings arrange on mark；Second cutting second fin of each head 42 of the wing 4,42', 42 " 422 court of the second aerofoil
One direction tilts, 3=50~60 ° of the included angle B formed between the horizontal cross-section of hollow body 10；The second cutting wing 4
The second fin of each head 42,42', 42 " are equipped with reinforcing rib 43, and these reinforcing ribs 43 are connected to the periphery of hollow body 10
On face；
The front end cutting body 5 has several, is each located on 14 outer end face of bottom end cover of hollow body 10 with spaced radial,
Installation direction is that its third cutting cutter hub 51 is made to be mounted to the direction of rotation towards hollow body 10, each front end cutting body 5
Third cutting cutter hub 51 is fixed on 14 outer end faces of lower end capping of hollow body 10 by third hilt 52；
The wearing plate 6 is installed in paddle 2, first and cuts the cutting wing 4 of the wing 3, second and front end cutting body 5 and hollow pipe respectively
The concentric free end arc surface of body 10；
First cutting cutter hub 31, second of the first cutting wing 3 cuts the second cutting cutter hub 41 and front end cutting body 5 of the wing 4
Third cutting cutter hub 51 be all made of hard alloy and be made.
Combination drill tool of the present invention, by the way that radially mutually intersecting angle in 90 ° is arranged in direction in hollow body external wall of upper portion
Multigroup paddle, effectively improve the mixing uniformity of original place soil significantly；By under the hollow body below multigroup paddle
Portion's outer wall is provided with cuts the wing and the second cutting wing with hollow body axial centre direction at the first of different angle, and at them
Free end be provided with high intensity wearing plate and using alloy material cutter tip, greatly improve the wear-resisting property of drilling tool
With drilling ability；By Grouting Pipe, tracheae and the solidification liquid pipe being equipped in hollow body inner cavity, convenient for mixing pile drilling machine not
Apply solidify liquid, injection high pressure gas with the stage and spray into cement grout, effectively control original place soil mixing quality, ensures that underground connects
Continuous wall construction quality；By the sealing shroud being arranged at the outer-hexagonal of drilling tool upper end, ensure Grouting Pipe, gas when drilling tool is connect with drilling rod
The sealing performance of pipe and solidification liquid pipe avoids the occurrence of spillage, leakage and pressure-air and overflows, effectively improves the leakproofness of drilling tool
Can, further increase working security.
Without departing from present general inventive concept, various changes and modifications can also be done to the present invention, but only
Will it is identical as composition of the present invention or equivalent if, also belong to protection scope of the present invention.
Claims (6)
1. a kind of combination drill tool, the drilling tool（1）Including：
Hollow body（10）, it is set to the Grouting Pipe of hollow body inner cavity（11）, tracheae（12）With solidification liquid pipe（13）, it is located at sky
The bottom end cover of heart tube body（14）First valve of outer end face（15）, the second valve below hollow body outer wall（16）With
Three valves（17）, it is located at the outer-hexagonal connector of hollow body upper end（18）, the hollow body outer wall is with support slot（19）；
The first cutting wing（3）, including the first cutting cutter hub（31）With the first fin；
The second cutting wing（4）, including the second cutting cutter hub（41）With the second fin；
Front end cutting body（5）, including third cutting cutter hub（51）With third hilt；
Multigroup paddle（2）, wearing plate（6）And sealing shroud（7）；
It is characterized in that：
The Grouting Pipe（11）, tracheae（12）With solidification liquid pipe（13）In hollow body（10）It is parallel each other in inner cavity；Institute
State outer-hexagonal connector（18）Endface setting has scalariform counterbore（1821）Retainer plate（182）；The Grouting Pipe（11）, tracheae
（12）With solidification liquid pipe（13）Upper end be each located on retainer plate（182）Scalariform counterbore（1821）Bottom hole in, it is described
Grouting Pipe（11）Lower end connect the first valve（15）, the tracheae（12）With solidification liquid pipe（13）Pass through the of its underpart respectively
One bend pipe（121）With the second bend pipe（131）Connect the second valve（16）With third valve（17）；The sealing shroud（7）It is two-way
There is sealing shroud upper and lower annular groove outside, interior each mounting O-shaped rings, its half to be placed in retainer plate（182）Counterbore step
（1821）Interior, the other half is protruded in retainer plate（182）Upper surface；
Multigroup paddle（2）Between the upper and lower every being arranged in the first cutting wing（3）Top hollow body（10）Outer wall
On, and opposite two groups of paddles are in hollow body（10）Radial direction be arranged to cruciform shape angle in 90 °；
The first cutting wing（3）For double end form, it is located at multigroup paddle（2）The hollow body of lower section（10）On, they
First fin is in hollow body（10）On its peripheral surface is arranged in a manner of radial symmetric；In addition, the first cutting wing（3）'s
In double end, the first fin of each head（32,32'）It is first following（321,321'）The first cutting cutter hub is arranged in upper each installation one
（31）, remove the first fin of each head（32,32'）Cutting cutter hub on the first following free end（31）Outside disposed at equal distance,
In other positions, first fin（32）It is first following（321）On first cutting cutter hub（31）Position and other end
First fin（32'）It is first following（321'）On first cutting cutter hub（31）Position be space crossings on rotational trajectory
Arrangement；
The second cutting wing（4）For three capitiform formulas, it is located at the first cutting wing（3）The hollow body of lower section（10）On, they
Second fin is in hollow body（10）On it is equiangularly arranged in its peripheral surface with radial direction；In addition, the second cutting wing（4）
Three in, the second fin of each head（42,42',42"）It is second following（421,421',421"）Upper each installation one arranges the 2nd
Cut cutter hub（41）, remove the second fin of each head（42,42',42"）Cutting cutter hub on the second following free end（41）Equidistantly
It is outer from arrangement, in other positions, first the second fin（42）It is second following（421）On second cutting cutter hub（41）'s
Position and first the second fin（42'）It is second following（421'）On second cutting cutter hub（41）Position and third head
Two fins（42"）It is second following（421"）It is that space crossings arrange on rotational trajectory；
The front end cutting body（5）There are several, hollow body is each located at spaced radial（10）Bottom end cover（14）On,
Installation direction is that its third is made to cut cutter hub（51）It is mounted to towards hollow body（10）Direction of rotation, each front end is cut
Cut body（5）Third cut cutter hub（51）It is by third hilt（52）It is fixed on hollow body（10）Lower end capping（14）Outside
On end face；
The wearing plate（6）It is installed in paddle respectively（2）, first cutting the wing（3）, second cutting the wing（4）With front end cutting body
（5）With hollow body（10）Concentric free end arc surface.
2. combination drill tool according to claim 1, it is characterised in that multigroup paddle（2）Blade face（21）Towards one
Direction tilts, with hollow body（10）Horizontal cross-section between 1=35~45 ° of included angle B being formed.
3. combination drill tool according to claim 1, it is characterised in that the first cutting wing（3）The first fin of each head
（32,32'）The first aerofoil（322）It tilts in one direction, with hollow body（10）Horizontal cross-section between the angle that is formed
B2=40~55 °.
4. combination drill tool according to claim 1, it is characterised in that the second cutting wing（4）The second fin of each head
（42,42',42"）The second aerofoil（422）It tilts in one direction, with hollow body（10）Horizontal cross-section between formed
3=50~60 ° of included angle B.
5. combination drill tool according to claim 1, it is characterised in that the second cutting wing（4）The second fin of each head
（42,42',42"）It is equipped with reinforcing rib（43）And it is connected to hollow body（10）Peripheral surface on.
6. combination drill tool according to claim 1, it is characterised in that the first cutting wing（3）First cutting cutter hub
（31）, second cutting the wing（4）Second cutting cutter hub（41）With front end cutting body（5）Third cut cutter hub（51）It is all made of hard
Matter alloy is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710285996.9A CN108798527B (en) | 2017-04-27 | 2017-04-27 | Composite drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710285996.9A CN108798527B (en) | 2017-04-27 | 2017-04-27 | Composite drilling tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108798527A true CN108798527A (en) | 2018-11-13 |
| CN108798527B CN108798527B (en) | 2023-07-18 |
Family
ID=64069571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710285996.9A Active CN108798527B (en) | 2017-04-27 | 2017-04-27 | Composite drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108798527B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112813968A (en) * | 2021-03-16 | 2021-05-18 | 上海工程机械厂有限公司 | Drilling tool capable of changing stirring angle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112813968A (en) * | 2021-03-16 | 2021-05-18 | 上海工程机械厂有限公司 | Drilling tool capable of changing stirring angle |
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| CN108798527B (en) | 2023-07-18 |
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