CN103231310A - Supply system for sub-cooling and nano particle jet flow minimal quantity lubrication coupled grinding medium - Google Patents
Supply system for sub-cooling and nano particle jet flow minimal quantity lubrication coupled grinding medium Download PDFInfo
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Abstract
The invention relates to a supply system for a sub-cooling and nano particle jet flow minimal quantity lubrication coupled grinding medium. The supply system comprises at least one minimal quantity lubrication and sub-cooling jet nozzle combined unit which is arranged on the side of a grinding wheel guard of a grinding wheel and is matched with a workpiece on a workbench. Each minimal quantity lubrication and sub-cooling jet nozzle combined unit comprises a minimal quantity lubrication atomization minimal jet nozzle and a sub-cooling jet nozzle, wherein the minimal quantity lubrication atomization minimal jet nozzle is connected with a nano fluid pipeline and a compressed air pipeline, and the sub-cooling jet nozzle is connected with a sub-cooling fluid pipeline; the nano fluid pipe, the compressed air pipeline and the sub-cooling liquid pipeline of each unit are connected with a nano fluid supply system, a low-temperature medium supply system and a compressed air supply system through control valves; and the nano fluid supply system, the low-temperature medium supply system and the compressed air supply system are connected with a control device. By means of the supply system, grinding burn is effectively eliminated, the surface quality of workpieces is improved, and efficient low-consumption environment-friendly energy-saving low-carbon clean production is achieved.
Description
Technical field
The present invention relates to the grinding medium feed system in a kind of grinding field, specifically is a kind of sub-cooled and nano particle jet micro lubricating coupling grinding medium feed system.
Background technology
Grinding is owing to high grinding force and compare grinding energy, produce a large amount of heats in grinding area, because the metal level that is cut is thinner, approximately the heat of 60%-90% is imported into workpiece, only have less than 10% heat and taken away by abrasive dust, these heats that import workpiece into often have little time to import into the workpiece depths in grinding process, form localized hyperthermia in the superficial layer and accumulate in, workpiece surface temperature Chang Keda is more than 1000 ℃, superficial layer form great thermograde (can reach 600-1000 ℃/mm).So the fuel factor of grinding is very big to workpiece surface quality and serviceability influence.Particularly when temperature surpasses a certain critical value at the interface, will cause surface heat damage (surface oxidation, burn, residual stress and crackle), its result will cause the wear resistance of part to reduce, the sensitivity of stress corrosion increases, the anti-fatigue performance variation, thereby has reduced service life and the functional reliability of part.In addition, the accumulation temperature rise of workpiece in the grinding cycle also often causes workpiece to produce dimensional accuracy and form accuracy error.On the other hand, the grinding heat of grinding area not only influences workpiece, also has influence on the service life of emery wheel.Therefore controlling the grinding area temperature is one of effective measure that improves grinding capacity and workpiece surface quality.Often take to select for use suitable emery wheel in the actual production, optimize technological parameter, increase for (cooling) hydraulic coupling and flow and reduce the grinding area temperature, but these methods can only reduce grinding damage to a certain extent.But because the grinding fluid that grinding is used contains oil and a large amount of harmful chemical components, can bring serious environmental to pollute.Therefore, develop a kind of low toxicity, oligosaprobic low temperature grinding system, make it have good low temperature flow, extremely strong cooling performance and greasy property preferably, the energy continuous pouring is in grinding area under cryogenic conditions, form the topical hypothermia district, reach few usefulness or without grinding fluid, realize green manufacturing in the grinding.
For reducing the temperature of grinding area, people have adopted many methods, spray processing method as low temperature liquid nitrogen cooling processing method and low temperature CO2, and these processing methods have confirmed to have processing effect preferably.The sub-cooled grinding, is taken away the heat that grinding area produces by heat exchange by spraying low-temperature cooling media to grinding area, thereby realizes the purpose of cooling.
At present, grinding makes with lubricator in a large number, is also referred to as the cast-type grinding, and is very big to environment and workers ' health injury.Because environmental requirement, the waste liquid of lubricant must be through handling, could discharging after up to standard, and liquid waste processing is costly, up to 54% of lubricant cost, makes people have to lubricant is reappraised.Germany did investigation to automobile factory, and the result who obtains is: tool expense only accounts for the 2%-4% of processing cost; But the expense relevant with lubricant but accounts for the 7%-17% of cost, be the 3-5 of tool expense doubly.Energy consumption in the machining, the power that spindle operation needs only accounts for 20%, and the energy consumption relevant with cooling and lubricating but accounts for 53%.This explanation is owing to the requirement of " environmental protection and low-carbon (LC) ", and the cheap advantage of lubricant does not exist, has become the obstacle that influences production development.
For protection environment, the dry type grinding of stopping using lubricant consciously fully that reduces cost are arisen at the historic moment.The dry type grinding is owing to abandoned the use of lubricant, and the advantage of its environmental protection aspect is self-evident.But because the energy that grinding removal unit materials volume consumes is much bigger more than processing methods such as milling, turning, drillings, produce so high energy density in emery wheel/workpiece interface, only have less than 10% heat and taken away by abrasive dust, these heats that import workpiece into can accumulate in superficial layer and form localized hyperthermia, therefore in grinding, do not make with lubricator fully, workpiece surface quality is worsened, and emery wheel reduces service life significantly, even scrap inefficacy.
Between the cast-type wet-milling cut and the dry type grinding between the micro lubricating technology be to guarantee to use minimal lubricant under the prerequisite of greasy property and cooling effect.Micro lubricating is the lubricant of sneaking into trace in gases at high pressure, enters the high temperature grinding area by behind high pressure draught (4.0-10bar) mixed aerosol.Traditional cast-type feed liquid way grinding medium consumption is the grinding wheel width 60L/h of unit, and the consumption of the grinding medium of micro lubricating only is the grinding wheel width 30-100ml/h of unit.High pressure draught plays the effect of cooling, chip removal, and lubricant is attached on the finished surface of workpiece, forms layer protecting film, plays lubricated effect.This technological synthesis the advantage of cast-type grinding and dry type grinding, lubricant effect and traditional cast-type grinding are almost as broad as long.Lubricant generally adopts vegetable oil as the Arrcostab of base oil, have characteristics such as fabulous biodegradability, greasy property and viscosity index (VI) height, volatility is low, renewable, with short production cycle, the environment diffusion is few, the use amount of lubricant has only the some thousandths of even ten thousand of traditional processing mode/several, having improved working environment greatly, is a kind of process technology of high-efficiency low-carbon environmental protection.; studies show that: the cooling effect of high pressure draught is very limited; do not satisfy the needs of high grinding area temperature enhanced heat exchange, the crudy of workpiece and wheel life obviously reduce than traditional cast-type grinding, illustrate that the micro lubricating technology also requires further improvement with perfect.
By the enhanced heat exchange theory as can be known, the heat-transfer capability of solid is much larger than liquids and gases.The thermal conductivity factor of solid material is than the big several magnitude of fluent material under the normal temperature.Be suspended with the thermal conductivity factor of liquid of metal, nonmetal or polymer solid particles than neat liquid big tens times even hundreds of times.In the micro lubricating medium, add solids, can significantly increase the thermal conductivity factor of fluid media (medium), improve the ability of convective heat transfer, greatly remedy micro lubricating cooling capacity defect of insufficient.In addition, nano particle (referring to have at least in three dimensions one dimension to be in the ultra-fine small solid particle of nanoscale scope (1-100nm)) also has tribological properties such as special antiwear and antifriction and high bearing capacity aspect lubricated and the tribology.
The preparation method of micro lubricating lubricant is add alkyl sulfonate surfactants, dimethyl sulfate dispersant in the mixed liquor of nano particle and degradable grinding medium after, adopts ten thousand times/minute dithers of 1.6-2 to obtain steady suspension again.
Nano particle is particle diameter less than the graphite granule of 100nm or aluminium oxide, CNT, metal, and the volume content of nano particle is 1%-30vol% in the lubricant, the grinding medium is degradable lubricating oil or vegetable oil.
The inventor has carried out deep theory analysis and experimental verification to micro lubricating grinding feed system, achievement in research has been applied for relevant patent, patent of invention by invention designer application, (patent No. is nano particle jet micro lubricating grinding lubricant supply system: 201210153801.2) disclose a kind of nano particle jet micro lubricating grinding lubricant supply system, it adds the nanoscale solids particle lubricant of making the micro lubricating grinding in the degradable grinding fluid, by micro-feedway lubricant is become and to have fixation pressure, pulse frequency is variable, the pulse drop that liquid-drop diameter is constant sprays into grinding area with pattern under the air barrier effect that gases at high pressure produce.It has all advantages of micro lubricating technology and has stronger cooling performance and the excellent tribology characteristic, efficiently solve grinding burn, improve workpiece surface quality, realized efficient, low consumption, environmental friendliness, the green cleaner production of resource-effective low-carbon (LC), had very important meaning.
Patent of invention: nano particle jet micro lubricating grinding surface roughness Forecasting Methodology and device (patent No. is 201210490401.0) disclose a kind of grinding surface roughness Forecasting Methodology and device under nano particle jet micro lubricating condition.It comprises a sensor lever, and described sensor lever left end is provided with contact pilotage, and contact pilotage contacts with wheel face, and the sensor lever right-hand member is connected with inductive displacement transducer, and fulcrum place and the measurement mechanism body of sensor lever are hinged; Inductive displacement transducer is connected with AC power; The inductive displacement transducer data output end then is connected with filter amplifier, and filter amplifier is connected with oscillograph with calculator respectively, and calculator also is connected with memory.It characterizes emery wheel appearance with matrix, creates into mechanism according to the grinding workpiece surface appearance again, the precision of forecasting model height, and it is convenient not only to measure, the integrated rate height of equipment, utilization rate height, and certainty of measurement height, good reliability more has directive significance to reality.
Patent of invention: nano particle jet micro lubricating grinding three-phase stream feed system (patent No. is 201110221543.2) discloses a kind of nano particle jet micro lubricating grinding three-phase stream feed system, be characterized in: nano-fluid is delivered to the nozzle place through the liquid road, gases at high pressure enter nozzle through gas circuit simultaneously, gases at high pressure and nano-fluid be abundant mixed aerosol in the nozzle mixing chamber, after accelerating, accelerating chamber enters the minor air cell, Compressed Gas enters through minor air cell's passage simultaneously, three-phase stream is further rotated mixes and acceleration, three-phase stream is injected into grinding area with the form of atomized drop through jet expansion then.
Patent of invention: the controlled jet micro lubricating of nano-fluid electrostatic atomization grinding system (201310042095.9) discloses the controlled jet micro lubricating of a kind of nano-fluid electrostatic atomization grinding system, can make the droplet of injection realize controlled distribution by principles of electrostatics, thereby reduce the pollution to environment, for the staff provides better health care.Its grinding system is equipped with the corona charging nozzle, the nozzle body of corona charging nozzle is connected with liquid-supplying system, air supply system, the HVDC electrostatic generator of nozzle body bottom is connected with the negative pole of adjustable high-voltage DC power supply, the positive pole of adjustable high-voltage DC power supply adds electric installation with workpiece and is connected, and workpiece adds the not finished surface that electric installation is attached to workpiece; Grinding nanometer fluid liquid is sent into the corona charging nozzle by liquid-supplying system, air supply system is sent compressed air into the corona charging nozzle simultaneously, when grinding nanometer fluid liquid drives from nozzle body outlet ejection atomizing by compressed air by the HVDC electrostatic generator charged be controlled jet, the controlled grinding area that is distributed to processing work under the effect of electric field force and aerodynamic force.
But not the grinding medium feed system of sub-cooled and nano particle jet micro lubricating coupling in the technique scheme, make it not bring into play to greatest extent the tribological property of the powerful heat convection ability of low-temperature cooling media and nano particle jet excellence.
Invention the designer studies show that by experiment, is the grinding cooling medium by adopting low temperature CO2 and liquid nitrogen, can control the grinding area temperature effectively.With dry abrasive cutting and cast-type oil cooling but grinding compare, liquid nitrogen sub-cooled grinding force, obviously reduce than grinding energy, grinding area temperature, workpiece surface quality and integrality significantly improve, and have obviously improved the service life of emery wheel simultaneously and have reduced cooling fluid to the environment ground contamination.Sub-cooled has the following advantages:
(1) the grinding area temperature can be effectively controlled in the sub-cooled grinding, has avoided the generation owing to the too high surface of the work fire damage that causes of temperature, micro-crack and stretching residual stress, has improved the surface integrity of workpiece;
(2) the sub-cooled grinding is compared with dry abrasive cutting with the cold oil grinding, and grinding force obviously reduces, and has reduced the wearing and tearing of emery wheel, has improved the machining accuracy of workpiece simultaneously.
(3) the sub-cooled grinding reduces than grinding energy along with the increase of grinding depth, is conducive to the reduction of grinding area temperature.
(4) sub-cooled grinding smear metal is mainly removed with cut mode, has reduced the generation of swiping, cultivated plough and plastic deformation, has improved the surface quality of workpiece.
Though a lot of scholars have carried out theory analysis and experimental study to the micro lubricating grinding of nano particle jet and sub-cooled cutting/grinding, and have done a large amount of demonstrations and experiment.From searching document as can be known, also the micro lubricating grinding of nano particle jet and sub-cooled grinding are not organically combined at present, do not set up the internal relation between grinding area convection current enhanced heat exchange and nano particle jet, the low-temperature cooling media, the oil film of also not setting up surface of the work under nano particle jet and the low-temperature cooling media coupling condition forms mechanism, can't bring into play nano particle jet, low-temperature cooling media to the lubricated and heat radiation advantage of abrasive grinding wheel/workpiece interface.
Summary of the invention
Purpose of the present invention provides a kind of sub-cooled and nano particle jet micro lubricating coupling grinding medium feed system exactly for addressing the above problem.When workpiece material is carried out grinding, use the method for the lubricated coupling of nano particle jet micro lubricating and sub-cooled, can form the cryogenic freezing lubricating film in grinding area.In grinding process, cryogenic media evaporation is rapidly taken away a large amount of heat of grinding area, reduced the evaporation capacity of micro lubricating grinding medium, surface of the work and abrasive dust have been cooled off simultaneously, improved exchange capability of heat, reduce the grinding heat damage to greatest extent, improve surface integrity and the machining accuracy of workpiece to be machined.It has all advantages of micro lubricating technology and has stronger cooling performance and the excellent tribology characteristic, efficiently solve grinding burn, improve workpiece surface quality, realized efficient, low consumption, environmental friendliness, the green cleaner production of resource-effective low-carbon (LC), had very important meaning.
For achieving the above object, the present invention adopts following technical scheme:
A kind of sub-cooled and nano particle jet micro lubricating coupling grinding medium feed system, it comprises at least one micro lubricating and sub-cooled nozzle assembled unit, this unit is arranged on the wheel guard side of emery wheel, and matches with workpiece on the workbench; Described unit comprises micro lubricating atomize micro-nozzle and sub-cooled nozzle, and the micro lubricating micro-nozzle that atomizes is connected with compressed air line with the nano-fluid pipeline, and the sub-cooled nozzle is connected with the sub-cooled liquid pipeline; The nano-fluid pipeline of each unit, compressed air line and sub-cooled liquid pipeline all are connected with compressed-air supply system with nano-fluid feed system, cryogenic media feed system by control valve, and nano-fluid feed system, cryogenic media feed system and compressed-air supply system are connected with control device.
Described micro lubricating and sub-cooled nozzle assembled unit have two, respectively Dui Cheng the both sides that are installed in wheel guard.During work, micro lubricating atomizer and the sub-cooled nozzle of a side provide cooling and lubricating to grinding area, and the micro lubricating atomizer of opposite side only sprays compressed air and cleans chip removal, and the sub-cooled nozzle is closed.
Described nano-fluid feed system comprises the nano-fluid fluid reservoir, and it is by hydraulic pump II, pressure regulator valve II, choke valve II, turbine flowmeter II and corresponding control valve connection;
Described compressed-air supply system comprises air compressor, and it is by filter, air accumulator, pressure regulator valve III, choke valve III, turbine flowmeter III and corresponding control valve connection;
Described cryogenic media feed system comprises the cryogenic media fluid reservoir, and it is by hydraulic pump I, oil water separator, pressure regulator valve I, choke valve I, turbine flowmeter I and corresponding control valve connection.
Described pressure regulator valve II also is connected with overflow valve II, nano-fluid collection box;
Described pressure regulator valve III also is connected with the compressed air collection box with overflow valve III;
Described pressure regulator valve I also is connected with overflow valve I, cryogenic media collection box.
Described control valve is the hand-operated direction valve of four six-way valves, and valve body is provided with compressed air inlet T
1, nano-fluid entrance P and liquid cryogenic media entrance T
2And compressed air outlet A, nano-fluid outlet B and liquid cryogenic media outlet C; Spool adopts the spring steel ball location, has the cone seal internal thread at the left end of spool axial hole, and with the sealing of awl sealing screw, sealing screw is the fine thread cone screw, is coated with fluid sealant at the screw thread place when sealing when mounted.
The described micro lubricating micro-nozzle that atomizes comprises mixing chamber, and mixing chamber is installed air injection pipe for one section, and the other end is installed shower nozzle; Air injection pipe is assembled together by left nut and seal washer I and mixing chamber, and shower nozzle is assembled together by right nut and seal washer II and mixing chamber; The feed liquor plug is divided into admission chamber and hybrid chamber with mixing chamber, and hybrid chamber is connected with accelerating sections, and accelerating sections is connected with shower nozzle; The feed liquor screwed pipe is communicated with admission chamber, and one section sidewall that air injection pipe is positioned at hybrid chamber is provided with some rotation direction pores, and the air injection pipe top then is provided with venthole.
Described feed liquor plug is disc, and 4-8 inlet opening around is being symmetrically distributed; Described rotation direction pore is along tube wall array arrangement 4-8 of air injection pipe, outlet axis and its gas injection cavity wall face are tangent, Compressed Gas enters in the hybrid chamber 48 with tangential velocity v through the rotation direction pore, impels air-flow to rotate around air injection pipe in hybrid chamber, forms eddy current thereby drive the nano-fluid rotation; Rotation direction pore and air injection pipe axially are angled δ=25-75 ° and tilt to shower nozzle outlet.
Described shower nozzle is the flat fan shower nozzle, and flat fan shower nozzle inner surface is semielliptical or hemisphere face; Open a V-shaped groove on the top of semielliptical, V-shaped groove two inclined-planes pass through mutually about shower nozzle axis symmetry and with the semiellipse ball and form long and narrow spout, and bevel angle α is half of V-shaped groove angle.
Described sub-cooled nozzle is integral type Duckbill type nozzle, and the nozzle total length degree is Dz=25-55mm, and nozzle leading portion entrance is of a size of dr * hr, and outlet size is dc * hc, and wherein dr gets 10-40mm, and hr gets 5-35mm, and dc gets 20-50mm, and hc gets 15-45mm.
The micro lubricating micro-nozzle that atomizes is d to the jet length of workpiece in described each micro lubricating and the sub-cooled nozzle assembled unit, gets 10-20cm, and spray angle is β, and value is 15-30 °; Injection flow is 2.5-3.2ml/min, and compressed-air actuated pressure is 4.0-10bar;
Described sub-cooled nozzle is h to the vertical range of workpiece, gets 2-5cm, and spray angle is γ, and value is 3-8 °; Liquid cryogenic media flow is 10-40L/min.
The invention has the beneficial effects as follows: the grinding medium feed system that the coupling of a kind of sub-cooled and nano particle jet micro lubricating is provided, there are two cover nozzles in this system, micro lubricating atomizer I and sub-cooled nozzle I are fixed on the emery wheel right side, and sub-cooled nozzle II and micro lubricating atomizer II are fixed on the emery wheel left side.When common material is carried out down grinding, when 45 steel are carried out down grinding, the hand-operated direction valve I is transferred to second working position, nano-fluid in the nano-fluid fluid reservoir is under the effect of hydraulic pump II, the pressure regulator valve II of flowing through successively, the choke valve II, the turbine flowmeter II, the hand-operated direction valve I of flowing through again enters micro lubricating atomizer I, the pressure regulator valve III of flowing through successively after compressed air flows out from air accumulator, the choke valve III, the turbine flowmeter III, the hand-operated direction valve I of flowing through again enters micro lubricating atomizer I grinding area is carried out nano particle jet micro lubricating, simultaneously the hand-operated direction valve II is transferred to the 3rd working position, the pressure regulator valve III of flowing through successively after compressed air flows out from air accumulator, the choke valve III, turbine flowmeter III, the hand-operated direction valve II of flowing through again enter micro lubricating atomizer II emery wheel and workpiece are carried out the chip removal cleaning.When 45 steel being carried out contrary mill, with the working position exchange of moving reversal valve I and hand-operated direction valve II.When difficult-to-machine material is carried out down grinding, when nickel-base alloy is carried out down grinding, the hand-operated direction valve I is transferred to first working position, nano-fluid in the nano-fluid fluid reservoir is under the effect of hydraulic pump II, the pressure regulator valve II of flowing through successively, the choke valve II, the turbine flowmeter II, the hand-operated direction valve I of flowing through again enters micro lubricating atomizer I, the pressure regulator valve III of flowing through successively after compressed air flows out from air accumulator, the choke valve III, the turbine flowmeter III, the hand-operated direction valve I of flowing through again enters micro lubricating atomizer I, cryogenic media in the cryogenic media fluid reservoir is under the effect of hydraulic pump I, the oil water separator of flowing through successively, the pressure regulator valve I, the choke valve I, the turbine flowmeter I hand-operated direction valve I of flowing through again enters sub-cooled nozzle I, grinding area is carried out nano particle jet micro lubricating and sub-cooled coupling cooling and lubricating, simultaneously the hand-operated direction valve II is transferred to the 3rd working position, the pressure regulator valve III of flowing through successively after compressed air flows out from air accumulator, the choke valve III, the turbine flowmeter III, the hand-operated direction valve II of flowing through again enters micro lubricating atomizer II, and emery wheel and workpiece are carried out the chip removal cleaning.When nickel-base alloy being carried out contrary mill, with the working position exchange of hand-operated direction valve I and hand-operated direction valve II.
When difficult-to-machine material is carried out grinding, use the method for the lubricated coupling of nano particle jet micro lubricating and sub-cooled, can form the cryogenic freezing lubricating film in grinding area.In grinding process, cryogenic media liquid evaporation is rapidly taken away a large amount of heat of grinding area, has reduced the evaporation capacity of micro lubricating grinding fluid, has cooled off surface of the work and abrasive dust simultaneously.According to the grinding area capillary theory, when common micro lubricating and traditional cast-type are lubricated, the liquid cooled lubricating fluid infiltrates capillary and divides three phases, phase I is that liquid normal temperature infiltrates, second stage be normal temperature liquid in capillary, grinding fluid evaporates " blast " under high grinding area temperature action, phase III is gas phase and fills, the gas that an explosion occurred has been filled in the capillary, has hindered entering of follow-up grinding fluid, thereby has reduced the cooling and lubricating performance of grinding fluid.When using sub-cooled to lubricate simultaneously, the heat that the evaporation of cryogenic media liquid is taken away, avoided micro lubricating liquid in capillary " blast " or the steam after " blast " cools off rapidly, thereby guaranteed that entering of follow-up grinding fluid given play to the good cooling and lubricating performance of grinding fluid.This is very favourable for the grinding difficult-to-machine material.
Description of drawings:
Fig. 1 is the general assembly axonometric drawing of this embodiment;
Fig. 2 is the system schematic on this embodiment micro lubricating gas circuit, liquid road and cryogenic liquid road;
Fig. 3 is the structure chart of hand-operated direction valve among this embodiment;
Fig. 4 is the fundamental diagram of hand-operated direction valve among this embodiment;
Fig. 5 is the micro lubricating atomizer cut-open view of final assembly of this embodiment;
Fig. 5 a is the partial sectional view of air injection pipe;
Fig. 6 is the cutaway view of micro lubricating atomizer rotation direction pore among this embodiment;
Fig. 7 is the shower nozzle cutaway view of this embodiment;
Fig. 8 is the sub-cooled structure of nozzle figure of this embodiment;
Fig. 8 a is positive two side views of the sub-cooled nozzle of this embodiment;
Fig. 8 b is the left view of the sub-cooled nozzle of this embodiment;
Fig. 8 c is the vertical view of the sub-cooled nozzle of this embodiment;
Fig. 9 is the relative position schematic diagram of two kinds of nozzles and workpiece among this embodiment.
Wherein, 1-part workbench, 2-workpiece, the 3-emery wheel, 4-wheel guard, 5-magnetic force fixing sucking disk, 6-cryogenic media carrier pipe, 7-nano-fluid carrier pipe, 8-blowpipe, 9-micro lubricating atomizer I, 10-sub-cooled nozzle I, 11-nano-fluid fluid reservoir, the 12-air compressor, 13-cryogenic media fluid reservoir, 14-hydraulic pump I, the 15-filter, 16-nano-fluid collection box, 17-oil water separator, 18-hydraulic pump II, 19-Pressure gauge IV, 20-pressure regulator valve III, 21-pressure regulator valve II, 22-pressure regulator valve I, 23-overflow valve II, 24-choke valve III, 25-choke valve II, 26-choke valve I, 27-turbine flowmeter III, 28-turbine flowmeter II, 29 turbine flowmeter I, the 30-air accumulator, 31-hand-operated direction valve I, 32-valve body, the 33-spool, 34-left side nut, 35-air injection pipe, 36-seal washer I, 37-feed liquor screwed pipe, 38-feed liquor plug, the right nut of 39-, 40-seal washer II, the 41-shower nozzle, the 42-mixing chamber, 43-micro lubricating atomizer II, 44-sub-cooled nozzle II, 45-hand-operated direction valve II, the 46-inlet chamber, 47-admission chamber, 48-hybrid chamber, the 49-accelerating sections, the 50-jet expansion, 51-overflow valve III, 52-overflow valve I, 53-Pressure gauge I, 54-Pressure gauge II, 55-Pressure gauge III, 56-compressed air collection box, 57-cryogenic media collection box, the 58-sealing screw.
The specific embodiment:
Do explanation below in conjunction with accompanying drawing and the present invention of embodiment:
As can be seen from Figure 1, two cover nozzles being arranged among this embodiment, is respectively the micro lubricating atomizer I 9 on emery wheel right side and the micro lubricating atomizer II 43 and sub-cooled nozzle II 44 in sub-cooled nozzle I 10 and emery wheel left side.Micro lubricating atomizer I 9 is connected with nano-fluid carrier pipe 7 and blowpipe 8, and sub-cooled nozzle I 10 is connected with cryogenic media carrier pipe 6.Micro lubricating atomizer II 43 is connected with the carrier pipe of opposite side equally with sub-cooled nozzle II 44.Magnetic force fixing sucking disk 5 is adsorbed on emery wheel 3 sides, is used for fixing nano-fluid carrier pipe 7, blowpipe 8 and cryogenic media carrier pipe 6.Micro lubricating atomizer I 9 and micro lubricating atomizer II 43 provide micro lubricating for the grinding area between emery wheel 3 and the workpiece 2.Sub-cooled nozzle I 10 and sub-cooled nozzle II 44 can provide sub-cooled lubricated for the grinding area between emery wheel 3 and the workpiece 2.Micro lubricating atomizer I 9 can provide cooling and lubricating to grinding area with sub-cooled nozzle I 10 when down grinding, and 43 sprays of the micro lubricating atomizer II of opposite side compressed air cleans chip removal, and sub-cooled nozzle II 44 is closed.Otherwise micro lubricating atomizer II 43 can provide cooling and lubricating to grinding area with sub-cooled nozzle II 44 when contrary mill, and 9 sprays of the micro lubricating atomizer I of opposite side compressed air cleans chip removal, and sub-cooled nozzle I 10 is closed.
Shown in the system schematic on this embodiment micro lubricating of Fig. 2 gas circuit, liquid road and cryogenic liquid road, air compressor 12 produces compressed air, by being stored in behind the filter 15 in the air accumulator 30, and by the pressure in the Pressure gauge IV 19 detection air accumulators 30, flow through successively after compressed air flows out from air accumulator 30 pressure regulator valve III 20, choke valve III 24, turbine flowmeter III 27, the hand-operated direction valve I 31 of flowing through again enters micro lubricating atomizer I 9 or the hand-operated direction valve II 45 of flowing through enters micro lubricating atomizer II 43.Overflow valve III 51 and compressed air collection box 56 constitute the protection loop.Nano-fluid in the nano-fluid fluid reservoir 11 is under the effect of hydraulic pump II 18; flow through successively pressure regulator valve II 21, choke valve II 25, turbine flowmeter II 28; the hand-operated direction valve I 31 of flowing through again enters micro lubricating atomizer I 9 or the hand-operated direction valve II 45 of flowing through enters micro lubricating atomizer II 43, and overflow valve II 23 and nano-fluid collection box 16 form the protection loop simultaneously.Cryogenic media in the cryogenic media fluid reservoir 13 is under the effect of hydraulic pump I 14, and the oil water separator 17 of flowing through successively, pressure regulator valve I 22, choke valve I 26, turbine flowmeter I 29 are flowed through again, and hand-operated direction valve I 31 enters sub-cooled nozzle I 10 or the hand-operated direction valve II 45 of flowing through enters sub-cooled nozzle II 44.Overflow valve I 52 and cryogenic media collection box 57 constitute the protection loop.Pressure gauge I 53, Pressure gauge II 54 and Pressure gauge III 55 are used for monitoring the pressure of cryogenic media path, nano-fluid path and Compressed Gas path respectively.
As Fig. 3, the 4th, the structure of hand-operated direction valve and fundamental diagram among this embodiment, this valve is four six-way valves as can be seen, has three entrances to be respectively compressed air inlet T at valve body 32
1, nano-fluid entrance P and liquid cryogenic media entrance T
2Three outlets are respectively compressed air outlet A, nano-fluid outlet B and liquid cryogenic media outlet C on the valve body 32.In conjunction with Fig. 1 and Fig. 2 as can be seen, compressed air inlet T
1Link to each other with blowpipe 8, nano-fluid entrance P links to each other with nano-fluid carrier pipe 7, liquid cryogenic media entrance T
2Link to each other with cryogenic media carrier pipe 6.Compressed air outlet A is connected with the nano-fluid entrance with the compressed air inlet of micro lubricating atomizer I 9 and micro lubricating atomizer II 43 with nano-fluid outlet B, and liquid cryogenic media outlet C is connected with sub-cooled nozzle II 44 with sub-cooled nozzle I 10.As can be seen from the figure this valve is the valve of spring steel ball location structure, and after release handle, valve still remains on the required operating position.This valve has four working positions, and is when valve is in first working position, lubricated with carrying out micro lubricating and sub-cooled simultaneously.When valve is in second working position, only carry out micro lubricating, sub-cooled is lubricated to be stopped.When valve was in the 4th working position, all passages all ended, and system is in the state of quitting work.When valve was in the 3rd working position, compressed air was from entrance T
1Flow out from outlet B after entering the passage in spool 33, only spray compressed air this moment and can play the effect of cleaning nanometer fluid passage in micro lubricating atomizer I 9 and the micro lubricating atomizer II 43, also can clean surface of the work.Visible left end at spool 33 axial holes has the cone seal internal thread among the figure, and with 58 sealings of awl sealing screw, sealing screw 58 is the fine thread cone screw, is coated with fluid sealant at the screw thread place when sealing when mounted.
Shown in the micro lubricating atomizer cut-open view of final assembly of this embodiment of Fig. 5, the micro lubricating atomizer I 9 of designed use and micro lubricating atomizer II 43 are made of left nut 34, air injection pipe 35, seal washer I 36, feed liquor screwed pipe 37, feed liquor plug 38, right nut 39, seal washer II 40, shower nozzle 41 and mixing chamber 42 among this embodiment as can be seen, and it assembles as shown in Figure 5.As can be seen from the figure micro lubricating atomizer I 9 and micro lubricating atomizer II 43 also comprise inlet chamber 46, admission chamber 47, hybrid chamber 48, accelerating sections 49 and jet expansion 50.Compressed air and nano-fluid mix by entering hybrid chamber behind inlet chamber 46 and the admission chamber 47 respectively, feed liquor plug 38 is disc, 4-8 the inlet opening that can be symmetrically distributed around as required can make compressed air and nano-fluid that enough blending spaces are arranged in hybrid chamber 48.Compressed air fully mixes formation subsonic speed three-phase (compressed air, liquid lubricating base oil and solid nano particle) bubble flow with nano-fluid in hybrid chamber 48.After bubble flow enters into accelerating sections, because accelerating sections is the flowing space that pyramidal structure has been dwindled the three-phase bubble flow, thereby increased pressure and the flow velocity of three-phase bubble flow, and reduced bubble diameter.Be squeezed and unstability when the three-phase bubble flow is through accelerating sections simultaneously, be broken into littler bubble and drop, the quantity that has increased droplet has improved atomizing effect.The three-phase bubble flow sprays with near-sonic speed at jet hole through accelerating the back simultaneously, strengthened effluxvelocity, suddenly drop to that the environmental pressure bubble sharply expands and explosion has formed the power of the atomization of liquid at pressure, bubble can be subjected to shock wave and explodes and collide mutually and make atomizing particle become extremely small on every side.
Shown in the cutaway view of micro lubricating atomizer rotation direction pore among this embodiment of Fig. 6, the main feature of rotation direction pore is the side that is positioned at air injection pipe 35, press actual needs along tube wall array arrangement 4-8, outlet axis and air injection pipe 35 inner chamber walls are tangent, Compressed Gas enters in the hybrid chamber 48 with certain tangential velocity v through passage, there is a moment of momentum in exit flow, impels air-flow to rotate around air injection pipe 35 in passage, forms eddy current thereby drive the nano-fluid rotation.Simultaneously from Fig. 5 a as can be seen these rotation direction passages with axially be angled δ (25-75 °) and tilt to jet expansion, this can impel the three-phase bubble flow to advance to nozzle bore, simultaneously on air injection pipe 35 tops a venthole is arranged, this gas outlet can be accelerated mixed three-phase bubble flow.
Shown in the shower nozzle cutaway view of this embodiment of Fig. 7, this shower nozzle 41 is the flat fan shower nozzle as can be seen.Flat fan shower nozzle inner surface is generally semielliptical or hemisphere face.Open a V-shaped groove on the top of semielliptical, V-shaped groove two inclined-planes pass through mutually about the nozzle-axis symmetry and with the semiellipse ball and form long and narrow spout.This shower nozzle can produce fan-shaped even flat jet, and this jet impact force is even, and impact range is big, and angle of flare also can be adjusted in a big way, and its cleansing power is particularly outstanding.So when with compressed air surface of the work being cleaned, its effect is particularly evident.A is oval major semiaxis length among the figure, b be elliptical center to V-type bottom land length, c is nozzle incident cross section diameter, α is half of the V-type angle of the v-groove.
Shown in the sub-cooled structure of nozzle figure of this embodiment of Fig. 8, the simple one nozzle of this cooling nozzle structure, processing is simple, and is with low cost.According to Fig. 8 a, Fig. 8 b and Fig. 8 c as can be seen, the nozzle total length degree is Dz(25-55mm), nozzle leading portion entrance is of a size of dr * hr, outlet size is dc * hc, the desirable 10-40mm of dr wherein, the desirable 5-35mm of hr, the desirable 20-50mm of dc, the desirable 15-45mm of hc, the screw thread of its rear end can require to choose M36, M24 and M40 equidimension by the screw thread specification according to difference, and the rear end screw thread is connected with cryogenic media carrier pipe 6, and the liquid flow space of this Duckbill type nozzle interior is the trend that slowly reduces, and makes its outlet liquid have certain speed.This nozzle is applicable to big flow liquid, is difficult for stopping up.
Shown in the relative position schematic diagram of two kinds of nozzles among this embodiment of Fig. 9 and workpiece, micro lubricating atomizer I 9 is d to the jet length of workpiece 2, generally gets 10-20cm.The spray angle of micro lubricating atomizer I 9 is β, and general value is 15-30 °.Sub-cooled nozzle I 10 is h to the vertical range of workpiece 2, generally gets 2-5cm, and the spray angle of sub-cooled nozzle I 10 is γ, and general value is 3-8 °.Micro lubricating atomizer II 43 and sub-cooled nozzle II 44 are installed in twice symmetry of emery wheel with micro lubricating atomizer I 9 and sub-cooled nozzle I 10.Micro lubricating atomizer I 9 and micro lubricating atomizer II 43 injection flows are 2.5-3.2ml/min simultaneously, compressed-air actuated pressure is 4.0-10bar, and the liquid cryogenic media flow of sub-cooled nozzle I 10 and sub-cooled nozzle II 44 is 10-40L/min.
The concrete course of work of this programme is as follows:
By the Chinese scholars extensive concern, technology also reaches its maturity the micro lubricating technology, and is more and more used in production and processing.Add nano particle in micro lubricating liquid, the technology that formation nano particle jet carries out cooling and lubricating to grinding area has also obtained comparatively desirable effect.But along with difficult-to-machine materials such as titanium-base alloy, nickel-base alloy, stainless steel, magnesium base alloy and composite are increasingly important in the effect of key areas such as aircraft industry, auto industry, nuclear power industry, biomedicine, yet micro lubricating technology and nano particle fluidics, the cooling and lubricating effect during for some difficult-to-machine materials of grinding is unsatisfactory.
Grinding is owing to high grinding force and compare grinding energy, produce a large amount of heats in grinding area, because the metal level that is cut is thinner, approximately the heat of 60%-90% is imported into workpiece, only have less than 10% heat and taken away by abrasive dust, these heats that import workpiece into often have little time to import the workpiece depths in grinding process, form localized hyperthermia in the superficial layer and accumulate in, and workpiece surface temperature Chang Keda is more than 1000 ℃.So high temperature is easy to cause surface of the work precision and geometric accuracy problem, can cause burned work-surface when serious.Nano particle jet micro lubricating can play cooling and lubricating effect preferably in general grinding processing.Pyroconductivity owing to difficult-to-machine material when the difficult processing rapidoprint is low, high hardness and calorific intensity, high work hardening ability, can cause the grinding area temperature sharply to increase etc. series of characteristics, grinding force sharply increases, and abrasion of grinding wheel sharply increases, and workpiece surface quality sharply descends, even blast burning etc.
Think that in theory material presents high strength, high rigidity, high ductibility, high-adhesiveness, lower thermal conductivity and inflammablely easily reacts, in one or more performances namely be called as difficult-to-machine material.As titanium-base alloy and nickel-base alloy, their thermal conductivity is all very low, and the abrasive dust that produces during grinding is not enough to take away a large amount of heat.They have very high hardness and calorific intensity simultaneously, and very high work hardening ability, and this causes the rapid increase of grinding force, and then has caused the further lifting of grinding area temperature.Traditional grinding fluid can not be penetrated into the contact-making surface of abrasive dust and emery wheel and reach highest temperature region especially when high-speed grinding.Grinding fluid is regional evapotranspiration and form a high temperature coverlay at grinding area this has caused the further increase of temperature at high temperature.Though the nano particle jet can enter into grinding area under compressed-air actuated drive, because the high temperature of grinding area and high grinding force can not form effective cooling and lubricating film.Nano particle jet consumption is very little, and a spot of lubricating oil evaporates in a large number in the effect meeting of grinding area superhigh temperature, and the oil film of formation is unsatisfactory.Difficult-to-machine material such as titanium-base alloy and nickel-base alloy will pay special attention to control the grinding area temperature in process, when the grinding area temperature when exceeding certain temperature, burning can take place or produce variety of issue in work in-process, and processing will be controlled within 400 ℃ as titanium-base alloy.Titanium-base alloy and nickel-base alloy are all very high for the chemism of our all known cutter materials.The performance of this reaction increases under higher temperature, and this can cause the generation of phenomenons such as adhering to, thereby the emery wheel pore is stopped up, and this will have a strong impact on performance and the life-span of emery wheel.Thereby cause the further deterioration of grinding area environment, finally show as, the workpiece surface quality of difference, the workpiece geometric accuracy of difference, the abrasive dust of difference forms ability, and emery wheel sharply weares and teares even lost efficacy.
For magnesium base alloy, because low grinding force, high surface smoothness easily forms abrasive dust and long emery wheel service life, and we think that magnesium base alloy is the structural material of processing easily.Yet magnesium base alloy is highly flammable material, is surpassing 450 ℃ during to its 650 ℃ of fusing points, and the danger of its burning increases with temperature.Magnesium base alloy can in different gas, burn as, even nitrogen, carbon dioxide, steam etc. are lacking under the situation of oxygen.Therefore, the control cutting temperature is very crucial in process in order to guarantee not take place to burn.The existence of the abrasive dust that grinding area is inflammable has further increased the danger of workplace breaking out of fire, is very important so remove the abrasive dust of workpiece material on emery wheel and the workpiece in process, and this just needs grinding system to have good cleaning function.
Based on above problem, this invention has proposed the grinding medium of a kind of sub-cooled and the coupling of nano particle jet micro lubricating and has supplied with system, there are two cover nozzles in this system, micro lubricating atomizer I 9 and sub-cooled nozzle I 10 are fixed on the emery wheel right side, and sub-cooled nozzle II 44 and micro lubricating atomizer II 43 are fixed on the emery wheel left side.When common material is carried out down grinding, when 45 steel are carried out down grinding, hand-operated direction valve I 31 is transferred to second working position, nano-fluid in the nano-fluid fluid reservoir 11 is under the effect of hydraulic pump II 18, the pressure regulator valve II 21 of flowing through successively, choke valve II 25, turbine flowmeter II 28, the hand-operated direction valve I 31 of flowing through again enters micro lubricating atomizer I 9, the pressure regulator valve III 20 of flowing through successively after compressed air flows out from air accumulator 30, choke valve III 24, turbine flowmeter III 27, the hand-operated direction valve I 31 of flowing through again enters 9 pairs of grinding area of micro lubricating atomizer I and carries out nano particle jet micro lubricating, simultaneously hand-operated direction valve II 45 is transferred to the 3rd working position, the pressure regulator valve III 20 of flowing through successively after compressed air flows out from air accumulator 30, choke valve III 24, turbine flowmeter III 27, the hand-operated direction valve II 45 of flowing through again enter 43 pairs of emery wheels of micro lubricating atomizer II and workpiece carries out the chip removal cleaning.When 45 steel being carried out contrary mill, with the working position exchange of moving reversal valve I 31 and hand-operated direction valve II 45.When difficult-to-machine material is carried out down grinding, when nickel-base alloy is carried out down grinding, hand-operated direction valve I 31 is transferred to first working position, nano-fluid in the nano-fluid fluid reservoir 11 is under the effect of hydraulic pump II 18, the pressure regulator valve II 21 of flowing through successively, choke valve II 25, turbine flowmeter II 28, the hand-operated direction valve I 31 of flowing through again enters micro lubricating atomizer I 9, the pressure regulator valve III 20 of flowing through successively after compressed air flows out from air accumulator 30, choke valve III 24, turbine flowmeter III 27, the hand-operated direction valve I 31 of flowing through again enters micro lubricating atomizer I 9, cryogenic media in the cryogenic media fluid reservoir 13 is under the effect of hydraulic pump I 14, the oil water separator 17 of flowing through successively, pressure regulator valve I 22, choke valve I 26, the turbine flowmeter I 29 hand-operated direction valve I 31 of flowing through again enters sub-cooled nozzle I 10, grinding area is carried out nano particle jet micro lubricating and sub-cooled coupling cooling and lubricating, simultaneously hand-operated direction valve II 45 is transferred to the 3rd working position, the pressure regulator valve III 20 of flowing through successively after compressed air flows out from air accumulator 30, choke valve III 24, turbine flowmeter III 27, the hand-operated direction valve II 45 of flowing through again enters micro lubricating atomizer II 43, and emery wheel and workpiece are carried out the chip removal cleaning.When nickel-base alloy being carried out contrary mill, with the working position exchange of moving reversal valve I 31 and hand-operated direction valve II 45.
When difficult-to-machine material is carried out grinding, use the method for the lubricated coupling of nano particle jet micro lubricating and sub-cooled, can form the cryogenic freezing lubricating film in grinding area.In grinding process, cryogenic media liquid evaporation is rapidly taken away a large amount of heat of grinding area, has reduced the evaporation capacity of micro lubricating grinding fluid, has cooled off surface of the work and abrasive dust simultaneously.According to the grinding area capillary theory, when common micro lubricating and traditional cast-type are lubricated, the liquid cooled lubricating fluid infiltrates capillary and divides three phases, phase I is that liquid normal temperature infiltrates, second stage be normal temperature liquid in capillary, grinding fluid evaporates " blast " under high grinding area temperature action, phase III is gas phase and fills, the gas that an explosion occurred has been filled in the capillary, has hindered entering of follow-up grinding fluid, thereby has reduced the cooling and lubricating performance of grinding fluid.When using sub-cooled to lubricate simultaneously, the heat that the evaporation of cryogenic media liquid is taken away, avoided micro lubricating liquid in capillary " blast " or the steam after " blast " cools off rapidly, thereby guaranteed that entering of follow-up grinding fluid given play to the good cooling and lubricating performance of grinding fluid.This is very favourable for the grinding difficult-to-machine material.
Claims (10)
1. a sub-cooled and nano particle jet micro lubricating coupling grinding medium feed system, it is characterized in that, it comprises at least one micro lubricating and sub-cooled nozzle assembled unit, and this unit is arranged on the wheel guard side of emery wheel, and matches with workpiece on the workbench; Described unit comprises micro lubricating atomize micro-nozzle and sub-cooled nozzle, and the micro lubricating micro-nozzle that atomizes is connected with compressed air line with the nano-fluid pipeline, and the sub-cooled nozzle is connected with the sub-cooled liquid pipeline; The nano-fluid pipeline of each unit, compressed air line and sub-cooled liquid pipeline all are connected with compressed-air supply system with nano-fluid feed system, cryogenic media feed system by control valve, and nano-fluid feed system, cryogenic media feed system and compressed-air supply system are connected with control device.
2. sub-cooled as claimed in claim 1 and nano particle jet micro lubricating coupling grinding medium feed system is characterized in that described micro lubricating and sub-cooled nozzle assembled unit have two, respectively Dui Cheng the both sides that are installed in wheel guard; During work, micro lubricating atomizer and the sub-cooled nozzle of a side provide cooling and lubricating to grinding area, and the micro lubricating atomizer of opposite side only sprays compressed air and cleans chip removal, and the sub-cooled nozzle is closed.
3. sub-cooled as claimed in claim 1 and nano particle jet micro lubricating coupling grinding medium feed system, it is characterized in that, described nano-fluid feed system comprises the nano-fluid fluid reservoir, and it is by hydraulic pump II, pressure regulator valve II, choke valve II, turbine flowmeter II and corresponding control valve connection;
Described compressed-air supply system comprises air compressor, and it is by filter, air accumulator, pressure regulator valve III, choke valve III, turbine flowmeter III and corresponding control valve connection;
Described cryogenic media feed system comprises the cryogenic media fluid reservoir, and it is by hydraulic pump I, oil water separator, pressure regulator valve I, choke valve I, turbine flowmeter I and corresponding control valve connection.
4. sub-cooled as claimed in claim 3 and nano particle jet micro lubricating coupling grinding medium feed system is characterized in that described pressure regulator valve II also is connected with overflow valve II, nano-fluid collection box;
Described pressure regulator valve III also is connected with the compressed air collection box with overflow valve III;
Described pressure regulator valve I also is connected with overflow valve I, cryogenic media collection box.
5. as claim 1 or 3 described sub-cooled and nano particle jet micro lubricating coupling grinding medium feed system, it is characterized in that described control valve is the hand-operated direction valve of four six-way valves, valve body is provided with compressed air inlet T
1, nano-fluid entrance P and liquid cryogenic media entrance T
2And compressed air outlet A, nano-fluid outlet B and liquid cryogenic media outlet C; Spool adopts the spring steel ball location, has the cone seal internal thread at the left end of spool axial hole, and with the sealing of awl sealing screw, sealing screw is the fine thread cone screw, is coated with fluid sealant at the screw thread place when sealing when mounted.
6. sub-cooled as claimed in claim 1 and nano particle jet micro lubricating coupling grinding medium feed system is characterized in that, the described micro lubricating micro-nozzle that atomizes comprises mixing chamber, and mixing chamber is installed air injection pipe for one section, and the other end is installed shower nozzle; Air injection pipe is assembled together by left nut and seal washer I and mixing chamber, and shower nozzle is assembled together by right nut and seal washer II and composite wall; The feed liquor plug is divided into admission chamber and hybrid chamber with mixing chamber, and hybrid chamber is connected with accelerating sections, and accelerating sections is simmered shower nozzle and connected; The feed liquor screwed pipe is communicated with admission chamber, and one section sidewall that air injection pipe is positioned at hybrid chamber is provided with some rotation direction pores, and the air injection pipe top then is provided with venthole.
7. sub-cooled as claimed in claim 6 and nano particle jet micro lubricating coupling grinding medium feed system is characterized in that described feed liquor plug is disc, and 4-8 inlet opening around is being symmetrically distributed; Described rotation direction pore is along tube wall array arrangement 4-8 of air injection pipe, outlet axis and its gas injection cavity wall face are tangent, Compressed Gas enters in the hybrid chamber 48 with tangential velocity v through the rotation direction pore, impels air-flow to rotate around air injection pipe in hybrid chamber, forms eddy current thereby drive the nano-fluid rotation; Rotation direction pore and air injection pipe axially are angled δ=25-75 ° and tilt to shower nozzle outlet.
8. sub-cooled as claimed in claim 6 and nano particle jet micro lubricating coupling grinding medium feed system is characterized in that described shower nozzle is the flat fan shower nozzle, and flat fan shower nozzle inner surface is semielliptical or hemisphere face; Open a V-shaped groove on the top of semielliptical, V-shaped groove two inclined-planes pass through mutually about shower nozzle axis symmetry and with the semiellipse ball and form long and narrow spout, and bevel angle α is half of V-shaped groove angle.
9. sub-cooled as claimed in claim 1 and nano particle jet micro lubricating coupling grinding medium feed system, it is characterized in that, described sub-cooled nozzle is integral type Duckbill type nozzle, the nozzle total length degree is Dz=25-55mm, and nozzle leading portion entrance is of a size of dr * hr, and outlet size is dc * hc, wherein dr gets 10-40mm, hr gets 5-35mm, and dc gets 20-50mm, and hc gets 15-45mm.
10. sub-cooled as claimed in claim 1 and nano particle jet micro lubricating coupling grinding medium feed system, it is characterized in that, the micro lubricating micro-nozzle that atomizes is d to the jet length of workpiece in described each micro lubricating and the sub-cooled nozzle assembled unit, get 10-20cm, spray angle is β, and value is 15-30 °; Injection flow is 2.5-3.2ml/min, and compressed-air actuated pressure is 4.0-10bar;
Described sub-cooled nozzle is h to the vertical range of workpiece, gets 2-5cm, and spray angle is γ, and value is 3-8 °; Liquid cryogenic media flow is 10-40L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310180218.5A CN103231310B (en) | 2013-05-15 | 2013-05-15 | Supply system for sub-cooling and nano particle jet flow minimal quantity lubrication coupled grinding medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310180218.5A CN103231310B (en) | 2013-05-15 | 2013-05-15 | Supply system for sub-cooling and nano particle jet flow minimal quantity lubrication coupled grinding medium |
Publications (2)
| Publication Number | Publication Date |
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| CN103231310A true CN103231310A (en) | 2013-08-07 |
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| CN107184245A (en) * | 2017-06-12 | 2017-09-22 | 浙江工业大学 | A kind of bone grinding attachment |
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| CN110405561A (en) * | 2019-08-29 | 2019-11-05 | 四川省川磨岷机联合数控机器股份有限公司 | A kind of hydraulic feed formula horizontal axis is away from platform surface grinding machine |
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| CN105752107A (en) * | 2016-03-03 | 2016-07-13 | 武汉理工大学 | Noise reduction device for monitoring and automatically controlling application of friction improver based on rail vibration |
| CN107184245A (en) * | 2017-06-12 | 2017-09-22 | 浙江工业大学 | A kind of bone grinding attachment |
| CN107184245B (en) * | 2017-06-12 | 2019-11-08 | 浙江工业大学 | A kind of bone grinding attachment |
| CN111757791A (en) * | 2018-04-24 | 2020-10-09 | 埃贡埃弗兹两合公司（有限公司及两合公司） | Grinding apparatus |
| CN108543178A (en) * | 2018-05-22 | 2018-09-18 | 浙江工业大学 | A kind of physiological saline cold nebulization cooling device for bone grinding |
| CN108543178B (en) * | 2018-05-22 | 2023-10-20 | 浙江工业大学 | Physiological saline low-temperature spray cooling device for bone grinding |
| CN110253410A (en) * | 2019-07-10 | 2019-09-20 | 深圳大学 | A kind of polishing method of mobile phone glass panel hot bending graphite jig |
| CN110405561A (en) * | 2019-08-29 | 2019-11-05 | 四川省川磨岷机联合数控机器股份有限公司 | A kind of hydraulic feed formula horizontal axis is away from platform surface grinding machine |
| CN110405561B (en) * | 2019-08-29 | 2024-04-26 | 四川省川磨岷机联合数控机器股份有限公司 | Hydraulic feeding type horizontal axis rectangular table surface grinder |
| CN111745460A (en) * | 2020-07-29 | 2020-10-09 | 南京工业职业技术学院 | Be used for online mixing mechanism of cradle formula five-axis machine tool cutting fluid |
| CN111745460B (en) * | 2020-07-29 | 2024-04-19 | 南京工业职业技术学院 | Cutting fluid on-line mixing mechanism for cradle type five-axis machine tool |
| CN112025554B (en) * | 2020-09-14 | 2021-08-13 | 湖南理工学院 | Nano-layer lubricating diamond grinding wheel grinding method based on shock wave cavitation effect |
| CN112025554A (en) * | 2020-09-14 | 2020-12-04 | 湖南理工学院 | Nano-layer lubricating diamond grinding wheel grinding method based on shock wave cavitation effect |
| WO2022052899A1 (en) * | 2020-09-14 | 2022-03-17 | 湖南理工学院 | Method for lubricating diamond wheel grinding with shock wave cavitation effect based nano-layer |
| WO2022052919A1 (en) * | 2020-09-14 | 2022-03-17 | 湖南理工学院 | Nano-layer lubricated diamond grinding wheel grinding device based on shock wave cavitation effect |
| CN111993270B (en) * | 2020-09-14 | 2021-08-13 | 湖南理工学院 | Nano-layer lubrication diamond grinding wheel grinding device based on shock wave cavitation effect |
| CN111993270A (en) * | 2020-09-14 | 2020-11-27 | 湖南理工学院 | Nano-layer lubrication diamond grinding wheel grinding device based on shock wave cavitation effect |
| CN113043163A (en) * | 2021-03-08 | 2021-06-29 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | Nano-fluid continuous controllable internal spraying low-temperature sintering grinding wheel grinding system |
| CN113478393A (en) * | 2021-07-26 | 2021-10-08 | 云南北方光学科技有限公司 | Nano-fluid micro-lubricating and atomized cooling ultra-precise cutting medium supply system |
| CN113478393B (en) * | 2021-07-26 | 2022-07-15 | 云南北方光学科技有限公司 | Nano-fluid micro-lubricating and atomizing cooling ultra-precise cutting medium supply system |
| CN113561007A (en) * | 2021-09-28 | 2021-10-29 | 南通力威模具制造有限公司 | Automobile die grinding damage detection device |
| CN115365885A (en) * | 2022-09-26 | 2022-11-22 | 江苏苏美达铝业有限公司 | Micro-lubricating cooling system |
| CN115365885B (en) * | 2022-09-26 | 2023-11-24 | 江苏苏美达铝业有限公司 | Trace lubricating and cooling system |
| CN116748897B (en) * | 2023-08-11 | 2023-11-03 | 云科智能制造（沈阳）有限公司 | Turning and polishing integrated machine for numerical control machining |
| CN116748897A (en) * | 2023-08-11 | 2023-09-15 | 云科智能制造（沈阳）有限公司 | Turning and polishing integrated machine for numerical control machining |
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