CN106826391A - A kind of nano-fluid oil film water droplet electrostatic controllable jet cutting process and device - Google Patents
A kind of nano-fluid oil film water droplet electrostatic controllable jet cutting process and device Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
- B23Q11/1038—Arrangements for cooling or lubricating tools or work using cutting liquids with special characteristics, e.g. flow rate, quality
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Abstract
The present invention discloses a kind of nano-fluid oil film water droplet electrostatic controllable jet cutting process and device in machining field,Coaxial nozzle connects the first micro-injection pump by the first silicone rubber tube,Second micro-injection pump is connected by the second silicone rubber tube,What the first micro-injection pump was pumped out is water-based nano-fluid,What the second micro-injection pump was pumped out is oil base nano-fluid,Adjustable HV generator exports negative direct current high voltage to coaxial nozzle,In coaxial nozzle and cutter,High-voltage electrostatic field is set up between workpiece,Water-based nano-fluid and oil base nano-fluid stream and the coaxial nozzle directly contact with negative direct current high voltage,With the negative electrical charge of coaxial nozzle same polarity on lotus,Converge to form nano-fluid oil film water droplet in the exit of nozzle discharge hole,Effectively combine the excellent greasy property of the cooling performance high with oil base nano-fluid of water-based nano-fluid,Efficient cooling and lubricating can be implemented to cutting region,Realize that nano-fluid oil film water droplet controllable is transported to the orientation of cutting region.
Description
Technical field
The invention belongs to machining field, the device that specifically cutting zone of machining is cooled down and lubricated
And method.
Background technology
Machining is the main method for obtaining part, in machining, the exhausted big portion of removal material institute consumed energy
Divide and be converted to cutting heat and concentrate on cutting zone, cause cutter high temperature, cause cutter Fast Wearing, this is at a high speed, efficiently
Showed during cutting more prominent.Common cooling provision is that the mode for pouring into a mould a large amount of cutting fluids to cutting region reduces cutting to reach
The purpose of temperature, extension cutter life and then raising processing efficiency.But because cutter and chip, cutter and absorption surface interface are deposited
In pressure very high so that when pouring into a mould a large amount of cutting fluids to cutting region, cutting region can be entered and cooling and lubricating is really played
The cutting fluid of effect only accounts for minimum ratio, it is impossible to which cutting region is effectively exchanged heat, and largely can band using cutting fluid
Increased substantially come part manufacturing cost, severe environmental pollution, endanger the negative effect such as healthy.
At present, micro lubricating is that the compressed air of certain pressure is mixed and be atomized with micro lubricating oil, sprays to cutting and adds
Work area, is lubricated with chip and cutter to cutter with the contact surface of workpiece, to reduce friction, while cooling down one kind of cutting region
Near dry cutting technology, micro lubricating is taken away the elaioleucite that cutting heat and micro lubricating oil be atomized into and is existed using compressed air jet
Cutting region undergoes phase transition absorption cutting heat to realize the direct cooling effect to cutting region, lubrication of the micro lubricating oil to cutting region
The friction between cutter and chip, workpiece can be also reduced, the generation of frictional heat is reduced, and then realize the indirect cooling to cutting region
Effect.But because the specific heat and thermal conductivity factor of gas are low and lubricating oil heat of gasification is small, this cooling means cannot effectively be reduced and cut
High temperature is cut, and cutting high temperature can also evaporate lubricating oil and lose lubrication function.This problem adds in high-efficient cutting, especially hardly possible
Show more prominent in work material high-efficient cutting.Additionally, in micro lubricating, compressed air is the driving of lubricating oil atomization injection
Power and droplet delivery vehicles, droplet move uncontrollable after spraying, and easily fly away into air.This not only pollutes working environment,
And being contacted by respiration and skin makes operating personnel be susceptible to suffer from respiratory disease and skin disease, its health is endangered.
It is currently the cooling and lubricating processing method for using oil on water to improve the cooling and lubricating performance of micro lubricating,
Using micro degradable lubricating oil and a small amount of water under compressed air-driven effect, it is atomized and is formed in special multi-stage nozzle
The small water droplet of adsorption oil film, sprays to machining area, water droplet absorption cutting heat vapour in the presence of pressure-air
Change, play cooling effect, and oil film is then attached to cutter or workpiece surface forms lubricating film, plays lubrication and antifriction function.Should
Method improves radiating efficiency using water droplet vaporization heat absorption, is beneficial to the holding of strength of lubricant film, so that it is guaranteed that the lubrication of lubricating oil
Function.Although the method increase the cooling and lubricating effect of micro lubricating, it has following defect：（1）Oil film water droplet
Water-carrying capacity needed for being formed is larger, it is impossible to meet the requirement of high efficiency, low energy consumption；（2）Using pressure-air as oil film water-drop-shaped
Into the power with conveying, can equally cause oil film water droplet to flying away in air, it is unfavorable to be produced to working environment and health
Influence.
Nano-fluid be one kind by base fluid and the molecular two-phase suspension of nanoparticle, nano-particle refers to size for 1 ~
The ultra-fine minute solid particles of 100nm, the nano-particle among nano-fluid is applied at present mainly metal, nonmetallic, oxygen
Compound, nitride and carbide etc., base fluid mainly have deionized water, mineral oil, vegetable oil, ethylene glycol etc..Because of the heat conduction of solid
Coefficient is far above liquid and nano-particle has low friction characteristic, nano-particle is added in base fluid and can obviously improve base fluid
Heat transfer property and antifriction performance, and compared with addition millimeter in a liquid or micron order solids, nano-particle is due to small
More preferably, many excellent specific properties of nano-fluid have become and have changed the suspension stability of dimensional effect and Brownian movement in base fluid
The new cooling and lubricating medium of kind micro lubricating cooling and lubricating performance.China Patent No. is ZL201410229717.3, title is
《A kind of spraying of controllable nano fluid droplet cutting process and device》Document disclosed in device, be to be built between nozzle and cutter
Vertical high-voltage electrostatic field, micro nano-fluid Charged atomization turns into Charged Droplet, and droplet is transported to cutting in the presence of electric field force
Area, cooling and lubricating is implemented to cutting region；By change the electrostatic field controllable nano-fluid droplet between nozzle and cutter size,
Distribution and movement locus, realize orientation from droplet to cutting region it is controllable transport, so as to reduce droplet flying away in transmit process,
Although improve the cooling and lubricating performance of micro lubricating, while its environmental-protecting performance is also improved, due to only making in implementation process
Use a kind of nano-fluid（Water base or oil base）It is cooling and lubricating medium, fails the cooling performance high and oil base of water-based nano-fluid
The excellent greasy property of nano-fluid is organically combined, so that its cooling and lubricating performance still needs to further lifting, to meet difficult processing
High request of the material high-efficient cutting to cooling and lubricating.
The content of the invention
The purpose of the present invention is effectively to solve the above mentioned problem that prior art is present, there is provided a kind of nano-fluid oil film water
The controllable jet cutting process of drop electrostatic controllable jet topping machanism and the device, is situated between using two kinds of fluids as cooling and lubricating
Matter, the excellent greasy property of the cooling performance high of water-based nano-fluid and oil base nano-fluid is organically combined, and improves cooling profit
Slip energy, can meet high request of the difficult-to-machine material high-efficient cutting to cooling and lubricating.
To achieve the above object, a kind of nano-fluid oil film water droplet electrostatic controllable jet topping machanism of the invention is using as follows
Technical scheme：Adjustable HV generator is connected by high-tension cable with coaxial nozzle, and coaxial nozzle passes through the first silicon rubber
Pipe connects the first micro-injection pump, connects the second micro-injection pump by the second silicone rubber tube, what the first micro-injection pump was pumped out
It is water-based nano-fluid, what the second micro-injection pump was pumped out is oil base nano-fluid.
The coaxial nozzle includes inner nozzle charging aperture, inner nozzle, outer nozzle, outer nozzle charging aperture and nozzle discharge hole,
Step through-hole is provided with inside outer nozzle, the center of step through-hole is coaxially fixedly installed inner nozzle, and nozzle material-feeding mouthful is coaxial fixed
Connection inner nozzle feed end, inner nozzle discharge end and outer nozzle discharge end form nozzle discharge hole, at nozzle discharge hole, outer spray
Annular spaces are left between mouth inwall and inner nozzle outer wall；Outer nozzle charging aperture is fixedly connected on the wall of outer nozzle side, outer nozzle enters
Material mouth is connected with the step through-hole inside outer nozzle；First micro-injection pump feeds through the first silicone rubber tube connection inner nozzle
Mouthful, the second micro-injection pump connects outer nozzle charging aperture through the second silicone rubber tube.
The technology that the controllable jet cutting process of the nano-fluid oil film water droplet electrostatic controllable jet topping machanism is used
Scheme is comprised the following steps：
A, water-based nano-fluid and oil base nano-fluid are prepared, the water-based nano-fluid pump that the first micro-injection pump will be prepared
Go out into inner nozzle charging aperture feeding inner nozzle, the oil base nano-fluid that the second micro-injection pump will be prepared is pumped out to outer nozzle
In charging aperture feeding outer nozzle,
B, while adjustable HV generator gives coaxial nozzle output negative direct current high voltage, coaxial nozzle and cutter, workpiece it
Between set up high-voltage electrostatic field；
C, water-based nano-fluid and oil base nano-fluid stream and the coaxial nozzle directly contact with negative direct current high voltage, on lotus with it is coaxial
The negative electrical charge of nozzle same polarity, converges to form nano-fluid oil film water droplet in the exit of nozzle discharge hole, is transported to cutting region,
Take away the heat of cutting generation and cutting region is lubricated.
Further, in step A, water-based nano-fluid is that nano-particle is dispersed to the two-phase suspension formed in deionized water
Liquid, oil base nano-fluid is that nano-particle is dispersed to the two-phase suspension formed in vegetalitas lubricating oil or ester oil；Nano-particle
Size between 1 ~ 100nm, the mass fraction of nano-particle is 0.1 ~ 1%.
Further, in step B, the angle α between the central shaft of coaxial nozzle and the central shaft of cutter is 30 ~ 40 degree,
On the central axis direction of coaxial nozzle, nozzle discharge hole to the minimum range between tool surface be jet length be 20 ~
30mm。
Further, in step B, the voltage range of the negative direct current high voltage of adjustable HV generator output for 0 ~-
30kV, the voltage supplied to coaxial nozzle is -4 ~ -12kV.
The present invention is after adopting the above technical scheme, have the advantages that：
1st, water-based nano-fluid and oil base nano-fluid are formed into nano-fluid oil film water droplet by coaxial electrostatic atomizing type, is adopted
The charged nanosize fluid that water-based nano-fluid and oil base nano-fluid are broken into through coaxial jet under high voltage electrostatic field
Oil film water droplet carries out cooling and lubricating to cutting region, effectively combines the cooling performance high and oil base nano-fluid of water-based nano-fluid
Excellent greasy property, efficient cooling and lubricating can be implemented to cutting region.
2nd, nano-fluid oil film water droplet makees directed movement in the presence of electric field force to cutting region, powered by electric field controls
Nano-fluid oil film water droplet effectively reduces the drift of nano-fluid oil film water droplet in transmit process to the course of conveying of cutting region
Scatter and disappear, not only improve working environment, and improve the utilization rate of water-based nano-fluid and oil base nano-fluid.Further, since
Electrostatic induction principle, with the charges of different polarity for attracting each other between nano-fluid oil film water droplet and cutter, workpiece surface, this increase
Attraction between nano-fluid oil film water droplet and cutter, workpiece, reduces nano-fluid oil film droplets impact cutting region wall
When bounce-back with splash, improve deposition.
3rd, by changing the high-voltage electrostatic field between coaxial nozzle and cutter, workpiece, water base and oil base nano-fluid flow can
Regulate and control the size of nano-fluid oil film water droplet, including the regulation and control diameter of nano-fluid oil film water droplet, nano-fluid oil film thickness and
The diameter of nano-fluid water droplet, distribution and move, realize orientation from nano-fluid oil film water droplet to cutting region it is controllable transport so that
Different cooling and lubricating performances are obtained, changeable cutting material and cutting data under modern mixes line production pattern is adapted to.
4th, compared with the existing pneumatic generation type of oil film water droplet, nano-fluid oil film water droplet of the present invention forms required water
Base nano-fluid flow greatly reduces, while device is simple.
Brief description of the drawings
Fig. 1 is a kind of structural representation of nano-fluid oil film water droplet electrostatic controllable jet topping machanism of the invention；
Fig. 2 is the structure sectional view of coaxial nozzle amplification in Fig. 1；
Fig. 3 is that the structural representation and physical dimension of coaxial nozzle, cutter and workpiece amplification in Fig. 1 are marked on a map；
In figure：1. adjustable HV generator；2. high-tension cable；3. the first micro-injection pump；4. the first silicone rubber tube；5.
Two micro-injection pumps；6. the second silicone rubber tube；7. coaxial nozzle；8. cutter；9. workpiece；10. wire；11. inner nozzle charging apertures；
12. end caps；13. inner nozzles；14. outer nozzles；15. outer nozzle charging apertures；16. nozzle discharge holes.
Specific embodiment
As shown in figure 1, a kind of nano-fluid oil film water droplet electrostatic controllable jet topping machanism of the invention includes adjustable high pressure
Electrostatic generator 1, high-tension cable 2, the first micro-injection pump 3, the first silicone rubber tube 4, the second micro-injection pump 5, the second silicon rubber
Sebific duct 6, coaxial nozzle 7, cutter 8, workpiece 9 and wire 10.
Adjustable HV generator 1 is connected by high-tension cable 2 with coaxial nozzle 7, and providing direct current to coaxial nozzle 7 bears
High pressure.The cathode output end of adjustable HV generator 1 is grounded by wire 10, and cutter 8 and workpiece 9 are connect indirectly by lathe
Ground, the material of cutter 3 is hard alloy or high-speed steel, and the material of workpiece 9 is metal.
Coaxial nozzle 7 connects the first micro-injection pump 3 by the first silicone rubber tube 4, while being connected by the second silicone rubber tube 6
Connect the second micro-injection pump 5.First micro-injection pump 3 pumps out water-based nano-fluid, and the second micro-injection pump 5 pumps out oil base nanometer
Fluid, water-based nano-fluid and oil base nano-fluid enter coaxial nozzle 7 simultaneously, the nozzle discharge hole ejection of coaxial nozzle 7
It is nano-fluid oil film water droplet.
As shown in Fig. 2 coaxial nozzle 7 includes inner nozzle charging aperture 11, end cap 12, inner nozzle 13, outer nozzle 14, outer nozzle
Charging aperture 15 and nozzle discharge hole 16.Step through-hole is provided with inside outer nozzle 14, the step through-hole at nozzle discharge hole 16 is
Aperture, remainder is macropore.Inner nozzle 13 is coaxially fixedly installed in the center of step through-hole, the feed end of inner nozzle 13 is coaxial
It is fixedly connected inner nozzle charging aperture 11.Outer nozzle 14 is threadably secured one end cap 12 of connection, it is ensured that inner nozzle 13 sprays outside
There is fixed position in mouth 14.Nozzle material-feeding mouthful 11 stretches into outer nozzle 14 from the outside of outer nozzle 14 by the centre bore of end cap 12
The feed end of inner nozzle 13 is fixedly and coaxially connected behind inside, the discharge end of inner nozzle 13 and the discharge end of outer nozzle 14 form nozzle discharge hole
16.At nozzle discharge hole 16, the external diameter of the hole diameter more than inner nozzle 13 of the step through-hole in outer nozzle 14, outer nozzle 14
In the hole diameter of step through-hole be 0.7 ~ 2mm, the internal diameter of inner nozzle 13 is 0.2 ~ 0.6mm, also, outer nozzle 14 inwall
And the outer wall of inner nozzle 13 leaves annular spaces between nozzle discharge hole 16.
An outer nozzle charging aperture 15, outer nozzle charging aperture 15 and outer nozzle 14 are fixedly connected on the side wall of outer nozzle 14
Between by thread seal connect.The central shaft and outer nozzle 14 of outer nozzle charging aperture 15, the central shaft of inner nozzle 13 are perpendicular.
Outer nozzle charging aperture 15 is connected with the macropore of the step through-hole inside outer nozzle 14.
With reference to Fig. 1 and 2, the first micro-injection pump 3 is through the connection inner nozzle of the first silicone rubber tube 4 charging aperture 11, and second is micro
Syringe pump 5 is through the connection outer nozzle of the second silicone rubber tube 6 charging aperture 15.Adjustable HV generator 1 is provided directly to coaxial nozzle 7
Stream negative high voltage, inner nozzle 13 and outer nozzle 14 have identical negative direct current high voltage.
As shown in figure 3, the angle α between the central shaft of the central shaft of coaxial nozzle 7 and cutter 8 is 30 ~ 40 degree, coaxial
On the central axis direction of nozzle 7, nozzle discharge hole 16 to the minimum range between the surface of cutter 8 of coaxial nozzle 7 is jet length
From D, jet length D is 20 ~ 30mm.
When nano-fluid oil film water droplet electrostatic controllable jet topping machanism works, first have to prepare water-based nano-fluid and oil
Base nano-fluid.Water-based nano-fluid is that nano-particle is dispersed to the two-phase suspension formed in deionized water.Oil base nanometer stream
Body is that nano-particle is dispersed to the two-phase suspension formed in vegetalitas lubricating oil or ester oil.By nano-particle and deionized water or
After vegetalitas lubricating oil or ester oil mix by a certain percentage, through ultrasonic vibration, two-phase suspension is obtained.Nano-particle uses graphite
Or the solid nanoparticles of diamond or CNT.The size of nano-particle between 1 ~ 100nm, divide by the quality of nano-particle
Number is 0.1 ~ 1%.
Adjustable HV generator 1 provides negative direct current high voltage to coaxial nozzle 7, in coaxial nozzle 7 and cutter 8, workpiece 9
Between set up high-voltage electrostatic field.The voltage range of the negative direct current high voltage of the output of adjustable HV generator 1 is 0 ~ -30kV, is led to
It is -4 ~ -12kV to cross after high-tension cable 2 to the service voltage of coaxial nozzle 7.According to electrostatic induction principle, in cutter 8 and the table of workpiece 9
Face induce with the opposite polarity positive charge of coaxial nozzle 7, and between coaxial nozzle 7 and cutter 8, workpiece 9 formed high pressure it is quiet
Electric field.Meanwhile, the water-based nano-fluid that the first micro-injection pump 3 will be prepared is pumped out to the first silicone rubber tube 4, through the first silicon rubber
Sebific duct 4 and the feeding inner nozzle 13 of inner nozzle charging aperture 11, in course of conveying, the flow for making water-based nano-fluid is 1 ~ 10ml/
h.Meanwhile, the oil base nano-fluid that the second micro-injection pump 5 will be prepared is pumped out to the second silicone rubber tube 6, through the second silicon rubber
In pipe 6 and the feeding outer nozzle 14 of outer nozzle charging aperture 15, in course of conveying, the flow for making oil base nano-fluid is 2 ~ 15ml/
h.So, water base and oil base nano-fluid flows through coaxial nozzle 7, and the directly contact of coaxial nozzle 7 with negative direct current high voltage, on lotus
With the negative electrical charge of the same polarity of coaxial nozzle 7.Water-based nano-fluid flows out from inner nozzle 13, and oil base nano-fluid is from inner nozzle 13
And flowed out in the annular spaces between outer nozzle 14, converging to be formed in the exit of the nozzle discharge hole 16 of coaxial nozzle 7 has
The compound drop of core shell structure.Because the electrostatic relaxation time of water-based nano-fluid is much smaller than oil base nano-fluid, negative electrical charge is main
It is distributed on stratum nucleare water-based nano-fluid surface, that is, the interface between stratum nucleare water-based nano-fluid and shell oil base nano-fluid
On.The described electrostatic relaxation time be drop it is charged in the electric field needed for time, computing formula is as follows：
,
In formula：- electrostatic relaxation time, unit s；The relative dielectric constant of-liquid；- permittivity of vacuum, unit F/
m；KThe electrical conductivity of-liquid, unit S/m.
When electric-field intensity reaches certain value, the boundary of stratum nucleare water-based nano-fluid and shell oil base nano-fluid is acted on
Electric field force on face overcomes interfacial tension, stratum nucleare water-based nano-fluid is formed stabilization jet, meanwhile, in interfacial viscosity effect
Under, shell oil base nano-fluid flows to form coaxial jet together in company with stratum nucleare water-based nano-fluid.Coaxial jet end crushes
Atomization, forms electronegative nano-fluid oil film water droplet.Electronegative nano-fluid oil film water droplet receives the same sex electric charge of coaxial nozzle 7
Repulsion, and attracted by cutter 8 and the surface charges of different polarity of workpiece 9, in the presence of electric field force, be transported to cutting region.When
When nano-fluid oil film water drop contact cutter 8 or 9 surface of workpiece, the nano-fluid oil film for being attached to nano-fluid water drops surface breaks
Split, lose nano-fluid water droplet boiling and vaporization in the case where high temperature action is cut of nano-fluid oil film parcel, take away cutting and produce
Amount of heat；The nano-particle and nano-fluid oil film left after nano-fluid water droplet fast vaporizing are attached to cutter 8 or work
The surface of part 9, reduces cutting contact interface friction, so as to realize the efficient cooling and lubricating to cutting region.
Claims (8)
1. a kind of nano-fluid oil film water droplet electrostatic controllable jet topping machanism, adjustable HV generator（1）By high pressure
Cable（2）With coaxial nozzle（7）It is connected, it is characterized in that：Coaxial nozzle（7）By the first silicone rubber tube（4）Connect first micro
Syringe pump（3）, by the second silicone rubber tube（6）Connect the second micro-injection pump（5）, the first micro-injection pump（30 pump out be
Water-based nano-fluid, the second micro-injection pump（5）What is pumped out is oil base nano-fluid.
2. a kind of nano-fluid oil film water droplet electrostatic controllable jet topping machanism according to claim 1, it is characterized in that：Coaxially
Nozzle（7）Including inner nozzle charging aperture（11）, inner nozzle（13）, outer nozzle（14）, outer nozzle charging aperture（15）Discharged with nozzle
Mouthful（16）, outer nozzle（14）Inside is provided with step through-hole, and the center of step through-hole is coaxially fixedly installed inner nozzle（13）, nozzle
Charging aperture（11）It is fixedly and coaxially connected inner nozzle（13）Feed end, inner nozzle（13）Discharge end and outer nozzle（14）Discharge end is formed
Nozzle discharge hole（16）, in nozzle discharge hole（16）Place, outer nozzle（14）Inwall and inner nozzle（13）Ring-type is left between outer wall
Space；Outer nozzle（14）Outer nozzle charging aperture is fixedly connected on the wall of side（15）, outer nozzle charging aperture（15）With outer nozzle（14）It is interior
The step through-hole in portion is connected；First micro-injection pump（3）Through the first silicone rubber tube（4）Connection inner nozzle charging aperture（11）, the
Two micro-injection pumps（5）Through the second silicone rubber tube（6）Connection outer nozzle charging aperture（15）.
3. a kind of nano-fluid oil film water droplet electrostatic controllable jet topping machanism according to claim 2, it is characterized in that：Outer spray
Mouth charging aperture（15）Central shaft and outer nozzle（14）, inner nozzle（13）Central shaft it is perpendicular.
4. a kind of nano-fluid oil film water droplet electrostatic controllable jet topping machanism according to claim 2, it is characterized in that：Outer spray
Mouth 14 is in nozzle discharge hole（16）The step through-hole at place is aperture, and remainder is macropore, and the hole diameter of step through-hole is 0.7
~ 2mm, inner nozzle（13）Internal diameter be 0.2 ~ 0.6mm.
5. a kind of controllable jet cutting side of nano-fluid oil film water droplet electrostatic controllable jet topping machanism as claimed in claim 2
Method, it is characterized in that comprising the following steps：
A, prepare water-based nano-fluid and oil base nano-fluid, the first micro-injection pump（3）The water-base nano stream that will be prepared
Body is pumped out to inner nozzle charging aperture（11）Feeding inner nozzle（13）In, the second micro-injection pump（5）The oil base nanometer that will be prepared
Fluid is pumped out to outer nozzle charging aperture（15）Feeding outer nozzle（14）In,
B, while adjustable HV generator（1）To coaxial nozzle（7）Output negative direct current high voltage, in coaxial nozzle（7）With knife
Tool（8）, workpiece（9）Between set up high-voltage electrostatic field；
C, water-based nano-fluid and oil base nano-fluid stream and the coaxial nozzle with negative direct current high voltage（7）Directly contact, on lotus with
Coaxial nozzle（7）The negative electrical charge of same polarity, in nozzle discharge hole（16）Exit converge to form nano-fluid oil film water droplet, it is defeated
Cutting region is transported to, the heat of cutting generation is taken away and cutting region is lubricated.
6. the controllable jet cutting side of nano-fluid oil film water droplet electrostatic controllable jet topping machanism according to claim 5
Method, it is characterized in that：In step A, water-based nano-fluid is that nano-particle is dispersed to the two-phase suspension formed in deionized water, oil
Base nano-fluid is that nano-particle is dispersed to the two-phase suspension formed in vegetalitas lubricating oil or ester oil；The size of nano-particle
Between 1 ~ 100nm, the mass fraction of nano-particle is 0.1 ~ 1%.
7. the controllable jet cutting side of nano-fluid oil film water droplet electrostatic controllable jet topping machanism according to claim 5
Method, it is characterized in that：In step B, coaxial nozzle（7）Central shaft and cutter（8）Central shaft between angle α be 30 ~ 40 degree,
In coaxial nozzle（7）Central axis direction on, nozzle discharge hole（16）To cutter（8）Jet length between surface for 20 ~
30mm。
8. the controllable jet cutting side of nano-fluid oil film water droplet electrostatic controllable jet topping machanism according to claim 5
Method, it is characterized in that：In step B, adjustable HV generator（1）The voltage range of the negative direct current high voltage of output is 0 ~ -30kV,
To coaxial nozzle（7）The voltage of supply is -4 ~ -12kV.
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| CN107639465A (en) * | 2017-11-02 | 2018-01-30 | 肇庆高新区国专科技有限公司 | A kind of stainless steel work-piece topping machanism |
| CN110096777A (en) * | 2019-04-22 | 2019-08-06 | 江苏科技大学 | Electrostatic atomization milling droplet transports modeling and transports effect evaluation method |
| CN110449981A (en) * | 2019-07-04 | 2019-11-15 | 汇专绿色工具有限公司 | Combined mist micro lubricating cooling system |
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