CN110026591A - A kind of intelligence high intensity BTA drill bit of deep hole machining - Google Patents
A kind of intelligence high intensity BTA drill bit of deep hole machining Download PDFInfo
- Publication number
- CN110026591A CN110026591A CN201910324413.8A CN201910324413A CN110026591A CN 110026591 A CN110026591 A CN 110026591A CN 201910324413 A CN201910324413 A CN 201910324413A CN 110026591 A CN110026591 A CN 110026591A
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- drill bit
- bta
- deep hole
- high intensity
- bta drill
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- 238000003754 machining Methods 0.000 title claims abstract description 33
- 238000005553 drilling Methods 0.000 claims abstract description 26
- 239000013078 crystal Substances 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims description 15
- 239000002826 coolant Substances 0.000 abstract description 16
- 239000007788 liquid Substances 0.000 abstract description 13
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000012545 processing Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 239000002173 cutting fluid Substances 0.000 description 4
- 210000000867 larynx Anatomy 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/06—Drills with lubricating or cooling equipment
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention belongs to the technical fields of deep hole processing equipment, a kind of BTA deep hole processing drill bit for eliminating throat's stifled bits and intelligent online detection is disclosed, including traditional BTA drill bit, is linked in outer Nei Fangya connection screw thread, four piezo-electric crystals and the two cosine rule jet holes of knife bar and the cosine rule fillet for eliminating throat's turbulent flow.Solve the problems, such as in existing deep hole machining BTA drill bit throat easily, chip removal device chip removal effect is undesirable and coolant liquid mechanical energy is the problems such as throat region local losses is big, deep hole machining difficult detection.BTA deep hole drill of the effective use with negative pressure does not reduce drilling rod rigidity on the basis of taking out bits simultaneously, improves the form accuracy of drilling.
Description
Technical field
The present invention relates to the intelligence high intensity BTA drill bits of processing and manufacturing technology more particularly to a kind of deep hole machining.
Background technique
In deep hole machining, BTA depth drill and workpiece form the space that inside is closed, runner is narrow.This row of also resulting in
Difficult problem is considered to be worth doing always along with the development of deep hole machining.BTA depth drill is pressurizeed using coolant inlet and exports normal pressure
Pressure difference carries out forced circulation chip removal.During carrying out forced circulation, blocks up bits problem and chip removal low efficiency and drill bit is processed
The detection of situation difficulty is always the problem of deep hole machining.It improves and has become deep hole machining reason with development chip removal theory and etection theory
The most important thing of opinion.Solving ejector drill, the BTA deep hole of DF brill and front end with negative pressure that BTA depth drill occurs
It bores, all in the chip removal kinetic energy for improving coolant liquid using external work.Pass through research coolant flow and rheological behavior, BTA deep hole
The coolant liquid loss cloud atlas of chip removal and the detection means of existing deep hole are bored, proposes that a kind of throat rear end is taken out simultaneous with negative pressure
The jet hole of suction, abatement BTA depth drill throat turbulence intensity cosine rule fillet and can be with four pieces of real-time detection drill bit pose
Piezo-electric crystal.
The intelligence high intensity BTA drill bit of deep hole machining has the advantage that
1. the intelligence high intensity BTA drill bit of deep hole machining is due to using spiral marking connection, identical as existing common BTA drill bit, exchange
Property it is high, convenient for promoting the use of.2. the intelligence high intensity BTA drill bit of deep hole machining is strong relative to other existing common BTA drill bits
Du Genggao.3. the intelligence high intensity BTA drill bit of deep hole machining is mature using fluid energy loss principle, convenient and reliable.4. deep hole
The probability of the stifled bits of throat can be greatly reduced in the intelligence high intensity BTA drill bit of processing.The coolant liquid of high speed is taken by drill bit head
Enter this process of channel of chip removal from the two of drill bit chip removal mouths respectively with chip, chip removal area increases by about one time, at this time suddenly
In throat rear end localized high intensity turbulent flow easy to form, the mechanical energy of coolant liquid is greatly consumed.And high intensity BTA drill bit throat
Cosine rule fillet effectively coolant liquid can be guided to mix, reduce coolant liquid mixing when mechanical energy loss.5. due to BTA
Drill bit is coupled using square thread with drilling rod, and the stress that high-intensitive BTA drill bit reduces throat due to increasing fillet is concentrated, and is mentioned
The high reliability of BTA system.6. the intelligence high intensity BTA drill bit of deep hole machining is in BTA depth drill of the front end with negative pressure
On the basis of it is improved, so having to be worth doing ability is considered to the pumping of drill bit throat.7, the intelligence high intensity BTA drill bit of deep hole machining is being oriented to
The increased piezo-electric crystal in rear portion, can reach the mesh of intelligent measurement with the stress condition and position and posture of real-time Transmission BTA drill bit
's.
DF is bored and bits device is taken out with the increase of drilling depth in ejector drill rear end, is constantly subtracted to the pumping bits ability of throat
It is weak.The intelligence high intensity BTA drill bit of deep hole machining has studied BTA cooling system from the angle of coolant liquid energy loss, proposes
There is the fillet of cosine rule to the increase of laryngeal structure.Increase piezo-electric crystal, intelligent measurement bit force simultaneously.The present invention is deep
The intelligence high intensity BTA drill bit of hole machined is determined from laryngeal structure, effectively reduces the loss of coolant liquid mechanical energy, is kept huge
Chip removal ability, and then drill bit throat is maintain to the pressure difference of drilling rod end cooling liquid outlet, guarantee being smoothly discharged for chip, with
And drill bit pose is detected using piezoelectric effect.
Summary of the invention
The purpose of the present invention is it is an object of the invention to overcome the shortcomings of above-mentioned technology, in conjunction with BTA deep hole processing system
Advantage has the advantages of BTA depth drill advantage and intelligent measurement of withdraw-filings with front end and provides a kind of intelligence of deep hole machining
It can high intensity BTA drill bit.The mechanical energy loss of coolant liquid part is reduced, and then improves the chip removal ability and system detection of system
Ability.
The present invention adopts the following technical scheme:
A kind of intelligence high intensity BTA drill bit of deep hole machining, including BTA drill bit and drilling rod, drilling rod is interior be provided with along axis coaxle it is logical
Long cooling passage, BTA drill bit are connected to the head end of drilling rod, and drilling rod endpiece is equipped with outer square thread, the drilling rod
The jet hole with cooling passage perforation is symmetrically provided on head sections, jet hole is the cosine that outer end bore is big, inner end bore is small
Regular shape, axis and the cooling passage axis of two jet holes are generally aligned in the same plane.
The sum of two jet holes and the sectional area of cooling passage intersection and the inlet area ratio of cooling passage are
1:2.That is r0 is determined according to the inlet area of cooling passage in Fig. 4, while according to the tilt angle of drill pipe thickness and jet hole
It can determine final cosine shape.The ratio be negative jet flow take out bits range limit, with DF bore or SIED bore power stream
It is identical as the ratio of negative pressure jet stream.Since the pressure of structure of the invention is identical, so being scaled the area of coolant liquid.Two simultaneously
Jet hole is corresponding with internal fillet, when not reducing the structural strength at drill bit position, improves chip removal efficiency.
The angle of the jet hole and cooling passage is 10 ° -60 °, and optimal value is 30 °.
BTA drill bit is symmetrically arranged with the fillet of two cosine rules close to the throat outer surface of drilling rod, compared to traditional fried dough twist
Drill bit can be such that the low-speed region of BTA drill bit throat rear end is greatly reduced like revolution section shape, the fillet of cosine rule is obtained,
The probability of stifled bits is reduced, as shown in Figure 6.
The beneficial effects of the present invention are: by two cosine rule fillets to eliminate drill bit throat rear end locally strong by the present invention
Strong turbulent region makes chip be easier that drill bit throat and drilling rod is discharged, while the configuration of the present invention is simple and common BTA drill bit exchange
Property high, two cosine rule fillet equal distributions.It is not needed compared with front end is with the BTA depth drill of negative pressure using high-intensitive material
Material, cost is lower, it is stronger to take out bits ability, and the intensity of the device is higher.From the perspective of coolant liquid energy loss, reach
System availability is improved, the effect of energy-saving and emission-reduction is played.Four piezo-electric crystals are deep hole machining and deep hole detects and on-line checking
Provide new method.
Detailed description of the invention
Fig. 1 is a kind of intelligence high intensity BTA drill bit schematic diagram of deep hole machining；
Fig. 2 is a kind of intelligence high intensity BTA drill bit schematic three dimensional views of deep hole machining；
Coolant flow schematic diagram when Fig. 3 is a kind of intelligence high intensity BTA bit operation of deep hole machining；
Fig. 4 is the comparative structure schematic diagram of existing cylindrical type jet hole (a) and cosine jet hole (b)；
Fig. 5 is the cosine fillet of drill bit throat and the comparative structure schematic diagram of (a) and existing revolution section shape (b)；
Low-speed region contrast schematic diagram when cutting fluid when Fig. 6 is existing drill bit and drill bit of the present invention processing flows；
Fig. 7 is that jet stream orifice angle and cooling passage export mean flow rate relational graph；
In figure: 1-BTA drill bit, the outer square thread of 2-, 3- jet hole, 4- fillet, 5- piezo-electric crystal block；
R- cosine jet hole big end radius, r0Cosine jet hole small end radius, lnJet stream hole length.
Specific embodiment
With reference to the accompanying drawing and the preferred embodiment specific embodiment that the present invention will be described in detail.Fig. 1 is that a kind of deep hole adds
The intelligence high intensity BTA drill bit of work, a kind of intelligently high intensity BTA drill bit of deep hole machining include traditional BTA drill bit, two penetrate
Discharge orifice, two cosine rule fillets, outer square thread and four blocks of piezo-electric crystals.Outer square thread one end is coupled drilling rod.
One group of jet hole is the cosine regular shaped that outer end bore is big, inner end bore is small, and two jet holes are symmetrically equal
Cloth, jet stream axially bored line and drill rod axis have 10 ° -60 ° of the angle of cut, and two jet stream axially bored lines and drill rod axis are located at same put down
Face, jet stream orifice angle will affect the negative pressure region of drill bit larynx portion rear end, finally will affect the flow velocity of cutting fluid outlet, and export
The speed of cutting flow velocity can directly react the chip removal situation inside drilling rod, i.e. exit velocity is bigger, and drilling rod internal chip evacuation is more suitable
Freely, it is less susceptible to the phenomenon that blocking.It is penetrated it can be seen from jet stream orifice angle and outlet mean flow rate relational graph in Fig. 7
When discharge orifice angle design is 10 ° to 60 °, exit velocity is able to maintain above or below 5m/s, under the conditions of the temperature Rate, is able to maintain chip removal
It is smooth, and jet hole angle design be 30 ° when, exit velocity can reach the peak value of 6m/s or more, more conducively chip removal therefore, one
As take 30 ° or so for optimal value.The sum of jet hole miner diameter end area of section is equal to the 1/2 of drainage area, i.e., according to drainage area
(the semidiameter area between inner hole of workpiece and drilling rod) can determine the radius r in Fig. 40。
As shown in figure 5, the larynx portion of drill bit symmetrically opens the fillet there are two cosine rule shape, two cosine rule fillets pair
Claim to be evenly distributed with, two cosine rule fillets and jet hole are at 90 degree.The fillet channel of chip removal surface of revolution of cosine rule shape and traditional
The channel of chip removal surface of revolution of fried dough twist drill bit shape (plane wedge angle) is compared, when cutting fluid flowing is by drill bit larynx portion, cosine shape
The low flow velocity region formed at fillet is significantly less than the low-speed region at conventional drill occiput, therefore stifled bits can be effectively reduced
Probability.
Four blocks of piezo-electric crystals are distributed in drill bit head, and axial position is located at the rear end of drill bit (i.e. close to the larynx of drilling rod
Head), outer diameter is slightly less than drill bit normal diameter.Drill bit in all directions stress when, the piezo-electric crystal of its rear end stress simultaneously.This
When, the stress condition and pose situation of the electrical signal detection drill bit of piezo-electric crystal can be passed through in real time in process.
Meanwhile the intelligence high intensity BTA drill bit use of the deep hole machining is installed on drilling rod head as traditional BTA drill bit
Portion, high-intensitive BTA drill bit improve stiffness of twist drill.
The intelligence high intensity BTA drill bit of the deep hole machining, when progress chip processing coolant liquid flows through, throat section face
Product expands rule and meets cosine law curve, and then greatly reduces the low-speed region of BTA drill bit throat rear end, reduces stifled
The probability of bits.
The configuration of the present invention is simple, the principle of negative pressure of jet hole and turbulence control principle and piezoelectric effect application are mature, by force
Spend higher more reasonable structure.It is cheaper that the price compared with chip removal device is considered to be worth doing with the pumping of other ends.With other laser detection phases
Than being easier to realize, economy is more preferable.The intelligence high intensity BTA drill bit of deep hole machining, which does not need high-strength material, to be passed through
Structural strength meets the drill bit intensity reduced because jet hole is increased.To improve the form accuracy in processed hole, maximum journey
The whirling motion drawback for avoiding cutting fluid great turbulence level bring drilling rod of degree.The intelligence high intensity BTA drill bit of deep hole machining
Line detection function can preferably reasonably select cutting parameter control surface quality.
The above is only a preferred embodiment of the present invention, it is noted that for those skilled in the art,
Under the premise of not departing from inventive principle, several improvement and optimization can also be made, these, which are improved, also should be considered as this with optimization
The protection scope of invention.
Claims (6)
1. a kind of intelligence high intensity BTA drill bit of deep hole machining, including BTA drill bit (1) and drilling rod, drilling rod is interior to be opened along axis coaxle
There is elongated cooling passage, BTA drill bit (1) is connected to the head end of drilling rod, and drilling rod endpiece is equipped with outer square thread (2),
It is characterized by: being symmetrically provided with the jet hole (3) with cooling passage perforation on the head sections of the drilling rod, jet hole (3) is
The cosine rule shape that outer end bore is big, inner end bore is small, axis and the cooling passage axis of two jet holes (3) are located at same
Plane.
2. the intelligence high intensity BTA drill bit of deep hole machining according to claim 1, it is characterised in that: two jet holes (3)
Inlet area ratio with the sum of the sectional area of cooling passage intersection and cooling passage is 1:2.
3. the intelligence high intensity BTA drill bit of deep hole machining according to claim 2, it is characterised in that: the jet hole (3)
Angle with cooling passage is 10 ° -60 °.
4. the intelligence high intensity BTA drill bit of deep hole machining according to claim 3, it is characterised in that: BTA drill bit (1) leans on
The throat outer surface of nearly drilling rod is symmetrically arranged with the fillet (4) of two cosine rules.
5. the intelligence high intensity BTA drill bit of deep hole machining according to claim 4, it is characterised in that: fillet (4) and jet stream
Hole (3) is in 90 degree.
6. the intelligence high intensity BTA drill bit of deep hole machining according to claim 5, it is characterised in that: the BTA drill bit
(1) four pieces are uniformly equipped with for detecting the piezo-electric crystal block of BTA drill bit (1) stress, pose close to the throat outer surface of drilling rod
(5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910324413.8A CN110026591A (en) | 2019-04-22 | 2019-04-22 | A kind of intelligence high intensity BTA drill bit of deep hole machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910324413.8A CN110026591A (en) | 2019-04-22 | 2019-04-22 | A kind of intelligence high intensity BTA drill bit of deep hole machining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110026591A true CN110026591A (en) | 2019-07-19 |
Family
ID=67239576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910324413.8A Pending CN110026591A (en) | 2019-04-22 | 2019-04-22 | A kind of intelligence high intensity BTA drill bit of deep hole machining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110026591A (en) |
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|---|---|---|---|---|
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| CN101360579A (en) * | 2006-04-07 | 2009-02-04 | 犹尼达克株式会社 | Deep hole drilling machine |
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| DE102016201537A1 (en) * | 2016-02-02 | 2017-08-03 | Johannes Kepler Universität Linz | rheometer |
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| CN208213446U (en) * | 2018-02-09 | 2018-12-11 | 青岛一三一油气科技有限责任公司 | A kind of hydrocyclone with sine curve flow structure |
| CN208680606U (en) * | 2018-07-06 | 2019-04-02 | 中北大学 | A kind of BTA deep hole processing drill bit with jet hole |
| CN209867470U (en) * | 2019-04-22 | 2019-12-31 | 中北大学 | Intelligent high-strength BTA drill bit for deep hole machining |
-
2019
- 2019-04-22 CN CN201910324413.8A patent/CN110026591A/en active Pending
Patent Citations (10)
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|---|---|---|---|---|
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| CN1317075A (en) * | 1998-07-28 | 2001-10-10 | 维利福格尔股份公司 | Rotation device |
| CN101360579A (en) * | 2006-04-07 | 2009-02-04 | 犹尼达克株式会社 | Deep hole drilling machine |
| DE102016201537A1 (en) * | 2016-02-02 | 2017-08-03 | Johannes Kepler Universität Linz | rheometer |
| CN205638243U (en) * | 2016-05-20 | 2016-10-12 | 大庆市永晨石油科技有限公司 | PDC drill bit that oil drilling used |
| CN107051761A (en) * | 2017-04-28 | 2017-08-18 | 燕山大学 | Multi-resonant cavate Cavitation jet nozzle |
| CN108356329A (en) * | 2018-02-07 | 2018-08-03 | 成都工具研究所有限公司 | A kind of side set BTA drill bits and its manufacturing method based on hot investment casting structure of the cutter body |
| CN208213446U (en) * | 2018-02-09 | 2018-12-11 | 青岛一三一油气科技有限责任公司 | A kind of hydrocyclone with sine curve flow structure |
| CN208680606U (en) * | 2018-07-06 | 2019-04-02 | 中北大学 | A kind of BTA deep hole processing drill bit with jet hole |
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