CN107639461A - Automatic liquid nitrogen combined mist cooling system - Google Patents
Automatic liquid nitrogen combined mist cooling system Download PDFInfo
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- CN107639461A CN107639461A CN201710875090.2A CN201710875090A CN107639461A CN 107639461 A CN107639461 A CN 107639461A CN 201710875090 A CN201710875090 A CN 201710875090A CN 107639461 A CN107639461 A CN 107639461A
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 366
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 183
- 239000007788 liquid Substances 0.000 title claims abstract description 163
- 239000003595 mist Substances 0.000 title claims abstract description 94
- 238000001816 cooling Methods 0.000 title claims abstract description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 176
- 239000003921 oil Substances 0.000 claims abstract description 129
- 239000000779 smoke Substances 0.000 claims abstract description 39
- 239000010687 lubricating oil Substances 0.000 claims abstract description 20
- 239000007789 gas Substances 0.000 claims description 40
- 238000001035 drying Methods 0.000 claims description 19
- 150000001875 compounds Chemical class 0.000 claims description 13
- 239000002828 fuel tank Substances 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 4
- 239000003570 air Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- -1 intake valve Substances 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 1
- 238000005520 cutting process Methods 0.000 abstract description 44
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 15
- 238000012545 processing Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 11
- 238000005461 lubrication Methods 0.000 description 9
- 239000002173 cutting fluid Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 229910001069 Ti alloy Inorganic materials 0.000 description 5
- 239000002826 coolant Substances 0.000 description 5
- 238000003754 machining Methods 0.000 description 5
- 229910001105 martensitic stainless steel Inorganic materials 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000011946 reduction process Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 241000168486 Causus Species 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000010730 cutting oil Substances 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 230000009885 systemic effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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- Auxiliary Devices For Machine Tools (AREA)
Abstract
A kind of automatic liquid nitrogen combined mist cooling system, including nozzle, liquid nitrogen feedway, oil feeding device, water feeder and air feeder, liquid nitrogen feedway are connected with nozzle, and liquid nitrogen feedway is used to provide liquid nitrogen for nozzle；Oil feeding device is connected with nozzle, and oil feeding device is used to provide lubricating oil for nozzle；Water feeder is connected with nozzle, and water feeder is used to provide water for nozzle；Air feeder is connected with nozzle, and air feeder is used to provide compressed air for nozzle, lubricating oil and water smoke is melted into mist of oil and water smoke.The automatic liquid nitrogen combined mist cooling system of the present invention can effectively reduce the temperature of cutting region, extend cutting-tool's used life, obtain more preferable crudy, and improve production efficiency.
Description
Technical field
The present invention relates to machine cut technical field, more particularly to a kind of automatic liquid nitrogen combined mist cooling system.
Background technology
High-speed cutting is a kind of to have been widely used for aviation, mould, the high-performance technology of automobile and other industries.Tradition
Cutting is a large amount of to have become important pollution of the mechanical processing industry to environment using cutting fluid, and has triggered various negative effects
Should.Discarded cutting fluid can pollute soil and air, and cutting fluid is harmful to human body, can trigger respectively after sucking human body
Kind disease.The use cost of cutting fluid is also higher simultaneously, there is certain corrosivity to lathe during use.
Cutting fluid penetration is the key for weighing lubrication to the power of processing district ability.In conventional processes, machine
The revolution at a high speed of bed main shaft produces huge centrifugal force, high velocity stream field flow, and tradition pours into a mould most cutting fluid under the type of cooling
Be difficult to enter cutting zone, and it is acute it is cold it is causus can produce quenching phenomenon, make cutter be more prone to collapse knife phenomenon etc..Therefore,
It is the important step for promoting green technology development to study new Green Cutting Technologies, realizes machine-building sustainable development
Inevitable requirement.
Traditional Minimal Quantity Lubrication Technology, when difficult-to-machine material uses (such as titanium alloy, high temperature alloy etc.), due to cutting
Cut that the temperature in area is very high, micro cutting oil is easy for losing at high temperature the effect of lubrication, does not have good cooling
Effect, had a strong impact on cutter life and the quality of processing.In order to improve the quality of cutter life and processing, adopt at present
With mist of oil water smoke combined mist technology, although fine water droplets particle can absorb substantial amounts of heat, phase in atomization process
Than heat caused in process, the processing effect of combined mist technology is still not notable enough.It is particularly high hard in processing
When spending difficult-to-machine material, the temperature of cutting can be higher, and cutting temperature is more obvious to the aging effects of cutter.
Low-temperature cold wind oil on water technology is a kind of lubricating system of novel metal processing, i.e. standard is also in half dry type cutting
DRY CUTTING.Low-temperature cold wind oil on water technology refers to mix with extremely micro mist of oil water smoke after compressed gas is freezed
After conjunction, the droplet particles of micron level are formed, are ejected into cutting region at a high speed, had to the working position between cutter and workpiece
Imitate a kind of cutting working method of lubrication cooling.Low-temperature cold wind oil on water technology is cooled by using water smoke, water
Mist can quickly volatilize when being in contact with machining area, take away substantial amounts of heat, low-temperature cold wind oil on water technology can
Suppress the rise of cutting region temperature to play, reduce the friction between cutter and workpiece, chip and cutter, and can effectively by
Chip is timely discharged, and is prevented adhesion and is improved the effect of workpiece processing quality.But although low-temperature cold wind oil on water
Temperature at technology nozzle can reach to be spent more subzero 60, for some difficult-to-machine materials, uses low-temperature cold wind oil
When film attached water drips technology, the temperature of cutting zone is still obvious too high, and too high temperature is significantly shorter the life-span of cutter.
The content of the invention
It is an object of the present invention to provide a kind of automatic liquid nitrogen combined mist cooling system, cutting region can be effectively reduced
Temperature, extend cutting-tool's used life, obtain more preferable crudy, and improve production efficiency.
The present invention, which solves its technical problem, to be realized using following technical scheme.
A kind of automatic liquid nitrogen combined mist cooling system, including nozzle, liquid nitrogen feedway, oil feeding device, water
Feedway and air feeder, liquid nitrogen feedway are connected with nozzle, and liquid nitrogen feedway is used to provide liquid nitrogen for nozzle；
Oil feeding device is connected with nozzle, and oil feeding device is used to provide lubricating oil for nozzle；Water feeder and nozzle
Connection, water feeder are used to provide water for nozzle；Air feeder is connected with nozzle, and it is nozzle that air feeder, which is used for,
Compressed air is provided, lubricating oil and water smoke is melted into mist of oil and water smoke.
In the preferred embodiment, aforesaid liquid feedway includes liquid nitrogen source, liquid nitrogen valve, low temperature valve and for nitrogen
Pipeline, liquid nitrogen source, liquid nitrogen valve and low temperature valve are connected in turn on nitrogen pipeline, being connected for nitrogen pipeline with nozzle.
In the preferred embodiment, it is above-mentioned to be provided with heat insulation layer for nitrogen pipeline.
In the preferred embodiment, above-mentioned oil feeding device includes fuel tank, oil pump and oil feed line, fuel tank
It is connected to the oil pump on oil feed line, oil feed line is connected with nozzle.
In the preferred embodiment, above-mentioned air feeder includes source of the gas, intake valve, oil gas multiple-way valve and the first confession
Air pipe, source of the gas, intake valve and oil gas multiple-way valve are connected on the first supply air line, and the first supply air line is connected with oil pump.
In the preferred embodiment, above-mentioned water feeder includes water tank, water intaking valve, water pump, filter and confession
Water lines, water tank, water intaking valve, water pump and filter are connected on supply channel, and supply channel is connected with the nozzle.
In the preferred embodiment, above-mentioned water feeder also includes return valve, return valve and return pipe
Road, return valve and return valve are connected on water return pipeline, and water return pipeline is connected between water tank and filter.
In the preferred embodiment, above-mentioned air feeder also includes airing valve for water tank, the first pressure regulator valve and the
Two supply air lines, source of the gas, airing valve for water tank and the first pressure regulator valve are connected on the second supply air line, and the second supply air line connects with water tank
Connect.
In the preferred embodiment, above-mentioned air feeder also includes drying machine, constant pressure valve, the second pressure regulator valve
With the 3rd supply air line, source of the gas, drying machine, constant pressure valve and the second pressure regulator valve are connected on the 3rd supply air line, the 3rd air supply pipe
Road is connected with nozzle.
In the preferred embodiment, above-mentioned automatic liquid nitrogen combined mist cooling system also includes control device, controls
Device processed is electrically connected with liquid nitrogen feedway, oil feeding device, water feeder and air feeder respectively, control
Device is used to control liquid nitrogen feedway, oil feeding device, water feeder and air feeder to supply phase for nozzle
Answer the flow of material.
The liquid nitrogen feedway of the automatic liquid nitrogen combined mist cooling system of the present invention is connected with nozzle, liquid nitrogen feedway
For providing liquid nitrogen for nozzle；Oil feeding device is connected with nozzle, and oil feeding device is used to provide lubrication for nozzle
Oil；Water feeder is connected with nozzle, and water feeder is used to provide water for nozzle；Air feeder is connected with nozzle, empty
Air feed system is used to provide compressed air for nozzle, lubricating oil and water smoke is melted into mist of oil and water smoke.Because liquid nitrogen directly sprays
Being mapped to machining region can make the temperature of cutting region lower, and temperature is to cutter life and work pieces process in reduction process
The influence of quality.Mist of oil coordinates liquid nitrogen using can prevent mist of oil from losing lubrication property due to high temperature in high temperature processing area.
Atomized water spray can take away the substantial amounts of cutting heat in cutting region in cutting region after overflash, while coordinate liquid nitrogen to use, can be with
Make the temperature of cutting region further reduce.Therefore, automatic liquid nitrogen combined mist cooling system of the invention can effectively reduce cutting
The temperature in area, extend cutting-tool's used life, obtain more preferable crudy, and improving production efficiency.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of specification, and in order to allow the above and other objects, features and advantages of the present invention can
Become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail.
Brief description of the drawings
Fig. 1 is the connection relationship diagram of the automatic liquid nitrogen combined mist cooling system of the present invention.
Fig. 2 is the structural representation of the automatic liquid nitrogen combined mist cooling system of the present invention.
Fig. 3 is the schematic flow sheet of the automatic liquid nitrogen combined mist cooling means of the present invention.
Embodiment
Further to illustrate the present invention to reach the technological means and effect that predetermined goal of the invention is taken, below in conjunction with
Accompanying drawing and preferred embodiment, to the embodiment according to automatic liquid nitrogen combined mist cooling system proposed by the present invention, knot
Structure, feature and its effect, describe in detail as follows:
For the present invention foregoing and other technology contents, feature and effects, in the following preferable reality coordinated with reference to schema
Applying in the detailed description of example to clearly appear from.By the explanation of embodiment, when predetermined mesh can be reached to the present invention
The technological means taken and effect be able to more deeply and it is specific understand, but institute's accompanying drawings are only to provide with reference to saying
It is bright to be used, not it is used for being any limitation as the present invention.
Fig. 1 is the connection relationship diagram of the automatic liquid nitrogen combined mist cooling system of the present invention.Fig. 2 is oneself of the present invention
The structural representation of hydrodynamic nitrogen combined mist cooling system.As depicted in figs. 1 and 2, in the present embodiment, the compound spray of automatic liquid nitrogen
Fog cooling system 100 includes nozzle 10, liquid nitrogen feedway 20, oil feeding device 30, water feeder 40, air supply
Device 50 and control device 60, wherein, liquid nitrogen feedway 20 is used to provide liquid nitrogen for nozzle 10；Oil feeding device 30 is used
In for nozzle 10 provide lubricating oil；Water feeder 40 is used to provide water for nozzle 10；It is nozzle that air feeder 50, which is used for,
10 provide compressed air, water and lubricant mist is melted into water smoke and mist of oil；Control device 60 respectively with liquid nitrogen feedway 20, profit
Lubricating oil feedway 30, water feeder 40 and air feeder 50 are electrically connected with.
Nozzle 10 is directed at machining region, and liquid nitrogen, mist of oil and water smoke are sprayed at a high speed.Liquid nitrogen is directly injected to cutting
Machining area can make the temperature of cutting region lower, and temperature is to cutter life and the shadow of workpiece processing quality in reduction process
Ring.Mist of oil coordinates liquid nitrogen using can prevent mist of oil from losing lubrication property due to high temperature in high temperature processing area.Atomized water spray
The substantial amounts of cutting heat in cutting region can be taken away after overflash in cutting region, while coordinates liquid nitrogen to use, cutting region can be made
Temperature further reduce.Therefore, for difficult to machine material (such as titanium alloy, high temperature alloy etc.), automatic liquid of the invention
Nitrogen combined mist cooling system 100 can effectively reduce the temperature of cutting region, extend cutting-tool's used life, obtain preferably adding
Working medium amount, and improve production efficiency.Meanwhile biography can be reduced using the automatic liquid nitrogen combined mist cooling system 100 of the present invention
System cutting fluid using caused environmental pollution, human body is damaged, a series of problem such as processing cost height.In this implementation
In example, automatic liquid nitrogen combined mist cooling system 100 of the invention includes two nozzles 10, but is not limited thereto, nozzle 10
Quantity can be according to being actually needed free increase and decrease.
It is noted that when liquid nitrogen, mist of oil and water smoke project from nozzle 10, mist of oil and water smoke is set to be coated on liquid nitrogen
Surrounding, i.e. liquid nitrogen sprays from the core of nozzle 10, and the periphery of liquid nitrogen is mist of oil and water smoke.Due to using this point
Layer design, mist of oil and water smoke can be allowed to absorb the temperature that liquid nitrogen outwards spreads, save the loss of energy.
As shown in Fig. 2 liquid nitrogen feedway 20 includes liquid nitrogen source 21, liquid nitrogen valve 22, low temperature valve 23 and supplies nitrogen pipeline 24.
In the present embodiment, the safe pressure of liquid nitrogen feedway 20 is 1.58Mpa, but is not limited thereto.
Liquid nitrogen source 21, liquid nitrogen valve 22 and low temperature valve 23 are connected in turn on nitrogen pipeline 24, for nitrogen pipeline 24 and nozzle 10
Connection.Liquid nitrogen source 21 exports liquid nitrogen (temperature is -196 DEG C, is stored using thermally insulated tank), and liquid nitrogen is low by being reached after liquid nitrogen valve 22
Warm valve 23, afterwards by entering nozzle 10 for nitrogen pipeline 24, the output flow of liquid nitrogen is entered by low temperature valve 23 and liquid nitrogen valve 22
The accurate control of row.Because low temperature valve 23 can bear the low temperature of liquid nitrogen, low temperature valve 23 can not be influenceed to keep just by low temperature environment
Often work.Liquid nitrogen energy dissipation during in order to prevent from conveying liquid nitrogen, heat insulation layer is provided with for nitrogen pipeline 24.In this reality
Apply in example, liquid nitrogen feedway 20 includes two low temperature valves 23, and being branched off into two for nitrogen pipeline 24 supplies nitrogen branch road, two low temperature valves
23, which are connected to two, is supplied on nitrogen branch road, and two ends for nitrogen branch road are connected with two nozzles 10 respectively, and respectively two
Individual nozzle 10 conveys liquid nitrogen.The quantity and the quantity of nozzle 10 of low temperature valve 23 and confession nitrogen branch road are correspondingly arranged, can be according to actual need
Freely to increase and decrease.It is noted that being located at the front end of nozzle 10 for the position that nitrogen pipeline 24 is connected with nozzle 10, oil is prevented
Mist, water smoke and liquid nitrogen condominium time, with the reduction of time of contact, mist of oil and water smoke also subtract in 10 systemic cold of nozzle
It is few, it can effectively prevent mist of oil and water smoke to freeze in nozzle 10.
As shown in Fig. 2 oil feeding device 30 includes fuel tank 31, oil pump 32 and oil feed line 33.In the present embodiment,
The fuel consumption of oil feeding device 30 is 5~50ml/h, but is not limited thereto.
Fuel tank 31 and oil pump 32 are connected on oil feed line 33, and oil feed line 33 is connected with nozzle 10.Oil pump 32 extracts oil
Lubricating oil in case 31, and enter nozzle 10 after oil feed line 33.In the present embodiment, between oil pump 32 and nozzle 10
Oil feed line 33 is branched off into two fuel feeding branch roads, and two fuel feeding branch roads are connected with two nozzles 10 respectively, respectively two nozzles
10 conveying lubricating oil.The quantity of fuel feeding branch road and the quantity of nozzle 10 are correspondingly arranged, can be according to being actually needed free increase and decrease.In order to
Prevent the mist of oil to be formed from freezing, influence lubricant effect, the mist of oil of oil feeding device 30 of the invention supply is low temperature resistant oil
Mist.
As shown in Fig. 2 water feeder 40 include water tank 41, water intaking valve 42, water pump 43, filter 44, outlet valve 45, return
Flow pressure regulator valve 46, return valve 47, supply channel 48 and water return pipeline 49.In the present embodiment, the water consumption of water feeder 40
For 30~500ml/h, but it is not limited thereto.
Water tank 41, water intaking valve 42, water pump 43, filter 44 and return valve 47 are connected on supply channel 48, supply channel
48 are connected with nozzle 10.Backflow pressure regulator valve 46 and return valve 47 are connected on water return pipeline 49, and water return pipeline 49 is connected to water tank
Between 41 and filter 44.The water of water tank 41 is by reaching water pump 43 after water intaking valve 42, the water after water pump 43 is by filter
44 are filtered, and then reach nozzle 10 by outlet valve 45.Cause the hydraulic pressure in supply channel 48 too high when water pump 43 supplies water
When, water tank 41 can be back to for the water in pipe after backflow pressure regulator valve 46 and return valve 47 by supplying water, and be reduced in supply channel 48
Pressure, prevent the booster of supply channel 48.In the present embodiment, water feeder 40 includes two outlet valves 45, supply channel
48 are branched off into two water supply branch roads being connected respectively with two outlet valves 45, and two outlet valves 45 are connected to two branch that supply water
Lu Shang, and the end of two water supply branch roads is connected with two nozzles 10 respectively, respectively two nozzles 10 convey water.Outlet valve 45
It is correspondingly arranged with the quantity and the quantity of nozzle 10 of water supply branch road, can be according to being actually needed free increase and decrease.It is noted that it is
The flow of water can accurately be controlled and keep stable output, such as water pump 43 as fine setting water pump 43, but not with this
It is limited.In order to prevent the water smoke to be formed from freezing, cooling-down effect is influenceed, the water smoke of water feeder 40 of the invention supply is resistance to low
Warm water mist.
As shown in Fig. 2 air feeder 50 includes source of the gas 51, drying machine 52, intake valve 53, oil gas multiple-way valve 54, water tank gas
Valve 55, the first pressure regulator valve 56, the second pressure regulator valve 57, constant pressure valve 58, the first supply air line 59a, the second supply air line 59b and the 3rd
Supply air line 59c.In the present embodiment, the pressure of source of the gas 51 of air feeder 50 is 0.5~1.0Mpa；Air consumption is 100
~1000L/min, but be not limited thereto.
Specifically, source of the gas 51, drying machine 52, intake valve 53 and oil gas multiple-way valve 54 are connected on the first supply air line 59a, and first
Supply air line 59a is connected with oil pump 32.Source of the gas 51 provides compressed air, and compressed air passes through air inlet after the drying of drying machine 52
Valve 53 and oil gas multiple-way valve 54, by reaching oil pump 32 after the control of oil gas multiple-way valve 54, compressed air is that oil pump 32 provides power, by fuel tank
Lubricating oil in 31 is transported to nozzle 10.In the present embodiment, the first supply air line 59a is provided with two oil gas multiple-way valves 54, two
Oil gas multiple-way valve 54 is connected on the first supply air line 59a parallel with one another.
Source of the gas 51, drying machine 52, the pressure regulator valve 56 of airing valve for water tank 55 and first are connected on the second supply air line 59b, and second
Supply air line 59b is connected with water tank 41.Source of the gas 51 provides compressed air, and compressed air passes through water tank after the drying of drying machine 52
The pressure regulator valve 56 of air valve 55 and first, the air pressure size of compressed air is adjusted by the first pressure regulator valve 56, it is then that compressed air is defeated
It is sent in water tank 41, after compressed air reaches water tank 41, the pressure increase in water tank 41, forces the water in water tank 41 outwards defeated
Go out.In the present embodiment, the first supply air line 59a and the second supply air line 59b head end are merged into a pipeline, the He of source of the gas 51
Drying machine 52 is connected on pipeline after merging.
Source of the gas 51, drying machine 52, the pressure regulator valve 57 of constant pressure valve 58 and second are connected on the 3rd supply air line 59c, and the 3rd supplies
Air pipe 59c is connected with nozzle 10.Source of the gas 51 provides compressed air, and compressed air passes through constant pressure valve after the drying of drying machine 52
58 and second pressure regulator valve 57, the air pressure size of compressed air is adjusted by the second pressure regulator valve 57, then compressed air is transported to
In nozzle 10, compressed air is atomized to lubricating oil and water.In the present embodiment, the first supply air line 59a, the second air supply pipe
Road 59b and the 3rd supply air line 59c head end are merged into a pipeline, and source of the gas 51 and drying machine 52 connect pipeline after merging
On.
In the present embodiment, water feeder 40 includes two constant pressure valves 58 and two the second pressure regulator valves 57, the 3rd supply
Pipeline 59c is branched off into two article of the 3rd supply branch road, and the end of two article of the 3rd supply branch road is connected with nozzle 10 respectively, one of them
Constant pressure valve 58 and second pressure regulator valve 57 are connected on one article of the 3rd supply branch road, another constant pressure valve 58 and one second tune
Pressure valve 57 is connected on another article the 3rd supply branch road, i.e., two article the 3rd supply branch road is respectively that two nozzles 10 provide high pressure sky
Gas.
As depicted in figs. 1 and 2, control device 60 is used to control liquid nitrogen feedway 20, oil feeding device 30, water to supply
It is the flow that nozzle 10 supplies respective substance to device 40 and air feeder 50, that is to say, that control device 60 can basis
Material, the depth of cutting and the liquid nitrogen supply stream for instructing control liquid nitrogen feedway 20 respectively being manually entered to be processed
Amount, the water supply flow rate and air feeder of the lubricating oil supply flow rate of oil feeding device 30, water feeder 40
50 cold air supply flow rate, enable the present invention automatic liquid nitrogen combined mist cooling system 100 realize automatically control liquid nitrogen,
A variety of cooling for cut modes such as liquid nitrogen+mist of oil, liquid nitrogen+water smoke, liquid nitrogen+mist of oil+water smoke (mist of oil and water smoke are compound).In this implementation
In example, control device is realized to liquid nitrogen feedway 20, oil feeding device 30, water feeder using PLC control system
40 and the control of air feeder 50, but be not limited thereto.
The automatic liquid nitrogen combined mist cooling system 100 of the present invention is in different cooling for cut modes and different flow
Under conditions of (small-large flow), the influence to workpiece surface roughness.
Experiment one, experimental condition：Martensitic stain less steel；Agree to receive KCM25 blades；Rotating speed 700r/min；Cutting-in 1mm；Cutting
Length 60mm；Cooling for cut mode：It is dry cut and (do not cool down), liquid nitrogen, liquid nitrogen+mist of oil, liquid nitrogen+compound (water smoke and mist of oil)；Cooling
Flow：Big flow (each coolant rate).Test result is with reference to table 1 below：
Table 1
As known from Table 1, in martensitic stain less steel cutting test, liquid nitrogen obtains optimum surface quality, surface roughness is big
It is small to be：Liquid nitrogen ＜ liquid nitrogen+mist of oil ＜ liquid nitrogen+compound ＜ is dry is cut.When carrying out mist of oil and combined mist, increase oil, water-carrying capacity, oil
Mist and water smoke freeze on knife face, and ice particle is excessive can not to enter Tool in Cutting region, can not play a part of cooling and lubricating.And
And a large amount of water smokes and mist of oil freeze and released heat, so as to improve the temperature of cutting zone.Therefore, cut using only liquid nitrogen
When cutting zone temperature it is minimum.
Experiment two, experimental condition：Austenitic stainless steel；Agree to receive KCM25 blades；Rotating speed 700r/min；Cutting-in 1mm；Cutting
Length 60mm；Cooling for cut mode：It is dry cut and (do not cool down), liquid nitrogen, liquid nitrogen+mist of oil, liquid nitrogen+compound (water smoke and mist of oil)；Cooling
Flow：Big flow (each coolant rate).Test result is with reference to table 2 below：
Table 2
When as known from Table 2, using being tested with martensitic stain less steel the same terms, obtain and martensitic stain less steel identical
Changing rule, liquid nitrogen surface quality are optimal.
Experiment three, experimental condition：Austenitic stainless steel；Agree to receive KCM25 blades；Rotating speed 700r/min；Cutting-in 1mm；Cutting
Length 60mm；Cooling for cut mode：It is dry cut and (do not cool down), liquid nitrogen, liquid nitrogen+mist of oil, liquid nitrogen+compound (water smoke and mist of oil)；Cooling
Flow：Low discharge (each coolant rate).Test result is with reference to table 3 below：
Table 3
As known from Table 3, after reducing flow, liquid nitrogen+Compound cooling mode obtains optimum surface quality.With feelings during big flow
Condition compares, and reduces liberated heat when flow reduces mist of oil and water smoke icing so that cutting zone obtains lower temperature, simultaneously
Flow mist of oil and water smoke refinement are reduced, cooling and lubrication can be served into cutting zone.Therefore, compared with liquid nitrogen, liquid
Nitrogen+combined mist can obtain more preferable surface quality.
Experiment four, experimental condition：Titanium alloy；Agree to receive KCM25 blades；Rotating speed 700r/min；Cutting-in 0.5mm；Length of cut
60mm；Cooling for cut mode：It is dry cut and (do not cool down), liquid nitrogen, liquid nitrogen+mist of oil, liquid nitrogen+compound (water smoke and mist of oil)；Cooling flow：
Low discharge (each coolant rate).Test result is with reference to table 4 below：
Table 4
As known from Table 4, after reducing flow, liquid nitrogen+Compound cooling mode obtains optimum surface quality.
Experiment five, experimental condition：Titanium alloy；Agree to receive K9125 blades；Rotating speed 700r/min；Cutting-in 0.5mm；Length of cut
60mm；Cooling for cut mode：It is dry cut and (do not cool down), liquid nitrogen, liquid nitrogen+mist of oil, liquid nitrogen+compound (water smoke and mist of oil)；Cooling flow：
Low discharge (each coolant rate).Test result is with reference to table 5 below：
Table 5
As known from Table 5, after reducing flow, liquid nitrogen+Compound cooling mode obtains optimum surface quality, and uses K9125
Blade face increased quality is the most obvious.
In summary, by martensitic stain less steel, austenitic stainless steel, three kinds of materials of titanium alloy cutting experiment, table
It is bright under suitable water, oil stream amount and proportioning, liquid nitrogen+recombination energy obtains surface quality more more preferable than liquid nitrogen, effectively plays cutter
Performance and raising machined surface quality.Liquid nitrogen is processed as cutter and provides low temperature environment, it is therefore prevented that what work in-process occurred
High temperature, problem of oxidation, improve cutter anti-wear performance.
Fig. 3 is the schematic flow sheet of the liquid nitrogen combined mist cooling means of the present invention.As shown in Figure 1, Figure 2 and Figure 3, this hair
Bright automatic liquid nitrogen combined mist cooling means utilizes above-mentioned automatic liquid nitrogen combined mist cooling system 100, and automatic liquid nitrogen is answered
The step of closing Spray Way includes：
Step S1, it is that nozzle 10 provides liquid nitrogen using liquid nitrogen feedway 20.
Specifically, liquid nitrogen is exported using the liquid nitrogen source 21 of liquid nitrogen feedway 20, liquid nitrogen passes sequentially through liquid nitrogen valve 22 and low
Warm valve 23, by entering nozzle 10 for nitrogen pipeline 24.
Step S2, it is that nozzle 10 provides lubricating oil using oil feeding device 30.
Specifically, compressed air is provided using the source of the gas 51 of air feeder 50, compressed air is dry by drying machine 52
By intake valve 53 and oil gas multiple-way valve 54 after dry, by reaching oil pump 32 after the control of oil gas multiple-way valve 54, compressed air is that oil pump 32 carries
For power, the lubricating oil in fuel tank 31 is transported in nozzle 10.
Step S3, it is that nozzle 10 provides water using water feeder 40.
Specifically, compressed air is provided using the source of the gas 51 of air feeder 50, compressed air is dry by drying machine 52
By the pressure regulator valve 56 of airing valve for water tank 55 and first after dry, the air pressure size of compressed air is adjusted using the first pressure regulator valve 56, then
Compressed air is transported in water tank 41, after compressed air reaches water tank 41, the pressure increase in water tank 41, forces water tank 41
In water be delivered to water pump 43；Nozzle 10 is delivered water into using water pump 43.
Step S4, it is that nozzle 10 provides compressed air using air feeder 50, water and lubricant mist is melted into water smoke
And mist of oil.
Specifically, compressed air is provided using the source of the gas 51 of air feeder 50, compressed air is dry by drying machine 52
By the pressure regulator valve 57 of constant pressure valve 58 and second after dry, the air pressure size of compressed air is adjusted by the second pressure regulator valve 57, then
Compressed air is transported in nozzle 10, and compressed air is atomized to lubricating oil and water.
Step S5, liquid nitrogen, mist of oil and water smoke are sprayed using nozzle 10, liquid nitrogen is sprayed from the core of nozzle 10,
Mist of oil and water smoke is set to be coated on the surrounding of liquid nitrogen.
Step S6, liquid nitrogen feedway 20, oil feeding device 30, water feeder 40 are controlled using control device 60
It is the flow that nozzle 10 supplies respective substance with air feeder 50.
Specifically, control device 60 is by controlling the output quantity of liquid nitrogen source 21 of liquid nitrogen feedway 20 and controlling liquid nitrogen valve
22 and closing or the opening of low temperature valve 23, and then realize control into the liquid nitrogen flow of nozzle 10.
Control device 60 is by controlling the output quantity of source of the gas 51 of air feeder 50 and controlling intake valve 53 and oil gas
The closing of valve 54 or opening, the power size of control oil pump 32 is realized, and then realize control into the air mass flow of nozzle 10.
Control device 60 is by controlling the output quantity of source of the gas 51 and control airing valve for water tank 55 and the of air feeder 50
The closing of one pressure regulator valve 56 or opening, the air pressure size of compressed air is adjusted, realize the pressure size in control water tank 41, make water
Water in case 41 is delivered to water pump 43；And then realize control into the water-carrying capacity of nozzle 10.
Control device 60 is by controlling the output quantity of source of the gas 51 of air feeder 50 and controlling constant pressure valve 58 and second
The closing of pressure regulator valve 57 or opening, adjust the air pressure size of compressed air, and control realizes compression into the air mass flow of nozzle 10
Air is atomized to lubricating oil and water.
Therefore, automatic liquid nitrogen combined mist cooling means of the invention can control liquid nitrogen feedway by control device 60
20th, oil feeding device 30, water feeder 40 and air feeder 50 are the flow that nozzle 10 supplies respective substance, real
It is now dry cut and (do not cool down), a variety of cooling and lubricating modes such as liquid nitrogen, liquid nitrogen+mist of oil, liquid nitrogen+compound (water smoke and mist of oil), specifically
Uninterrupted can not include concrete numerical value scope herein according to free regulation and control are actually needed.
The liquid nitrogen feedway 20 of the automatic liquid nitrogen combined mist cooling system 100 of the present invention is connected with nozzle 10, liquid nitrogen
Feedway 20 is used to provide liquid nitrogen for nozzle 10；Oil feeding device 30 is connected with nozzle 10, oil feeding device 30
For providing lubricating oil for nozzle 10；Water feeder 40 is connected with nozzle 10, and water feeder 40 is used to provide for nozzle 10
Water；Air feeder 50 is connected with nozzle 10, and air feeder 50 is used to provide compressed air for nozzle 10, makes lubricating oil
Mist of oil and water smoke are melted into water smoke.Because liquid nitrogen is directly injected to machining region the temperature of cutting region can be made lower, subtracted
Influence of the temperature to cutter life and workpiece processing quality in few process.Mist of oil coordinates liquid nitrogen using can prevent mist of oil from existing
High temperature processing area loses lubrication property due to high temperature.Atomized water spray can take away cutting region in cutting region after overflash
Substantial amounts of cutting heat, while coordinate liquid nitrogen to use, the temperature of cutting region can be made further reduce.Therefore, it is of the invention automatic
Liquid nitrogen combined mist cooling system 100 can effectively reduce the temperature of cutting region, extend cutting-tool's used life, obtain preferably adding
Working medium amount, and improve production efficiency.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing, but the present invention is not limited to above-mentioned implementation
Detail in mode, in the range of the technology design of the present invention, technical scheme can be carried out a variety of simple
Modification, these simple variants belong to protection scope of the present invention.It is each specific described in above-mentioned embodiment
Technical characteristic, in the case of reconcilable, it can be combined by any suitable means.In order to avoid unnecessary weight
Multiple, the present invention no longer separately illustrates to various combinations of possible ways.
Claims (10)
- A kind of 1. automatic liquid nitrogen combined mist cooling system, it is characterised in that including：Nozzle；Liquid nitrogen feedway, the liquid nitrogen feedway are connected with the nozzle, and the liquid nitrogen feedway is used to provide liquid for the nozzle Nitrogen；Oil feeding device, the oil feeding device are connected with the nozzle, and it is the nozzle that the oil feeding device, which is used for, Lubricating oil is provided；Water feeder, the water feeder are connected with the nozzle, and the water feeder is used to provide water for the nozzle；AndAir feeder, the air feeder are connected with the nozzle, and the air feeder is used to provide pressure for the nozzle Contracting air, lubricating oil and water smoke is set to be melted into mist of oil and water smoke.
- 2. automatic liquid nitrogen combined mist cooling system as claimed in claim 1, it is characterised in that the fluid Supplying apparatus includes Liquid nitrogen source, liquid nitrogen valve, low temperature valve and confession nitrogen pipeline, the liquid nitrogen source, liquid nitrogen valve and low temperature valve are connected to this in turn and supplied on nitrogen pipeline, This is connected for nitrogen pipeline with the nozzle.
- 3. automatic liquid nitrogen combined mist cooling system as claimed in claim 2, it is characterised in that this is provided with for nitrogen pipeline and protected Warm thermal insulation layer.
- 4. automatic liquid nitrogen combined mist cooling system as claimed in claim 1, it is characterised in that the oil feeding device bag Fuel tank, oil pump and oil feed line are included, the fuel tank and the oil pump are connected on the oil feed line, and the oil feed line connects with the nozzle Connect.
- 5. automatic liquid nitrogen combined mist cooling system as claimed in claim 4, it is characterised in that the air feeder includes Source of the gas, intake valve, oil gas multiple-way valve and the first supply air line, the source of the gas, intake valve and oil gas multiple-way valve are connected on first supply air line, First supply air line is connected with the oil pump.
- 6. automatic liquid nitrogen combined mist cooling system as claimed in claim 5, it is characterised in that the water feeder includes water Case, water intaking valve, water pump, filter and supply channel, the water tank, water intaking valve, water pump and filter are connected on the supply channel, The supply channel is connected with the nozzle.
- 7. automatic liquid nitrogen combined mist cooling system as claimed in claim 6, it is characterised in that the water feeder also includes Return valve, return valve and water return pipeline, the return valve and the return valve are connected on the water return pipeline, the return pipe Road is connected between the water tank and the filter.
- 8. automatic liquid nitrogen combined mist cooling system as claimed in claim 6, it is characterised in that the air feeder also wraps Airing valve for water tank, the first pressure regulator valve and the second supply air line are included, the source of the gas, airing valve for water tank and the first pressure regulator valve are connected to second confession On air pipe, second supply air line is connected with the water tank.
- 9. automatic liquid nitrogen combined mist cooling system as claimed in claim 5, it is characterised in that the air feeder also wraps Include drying machine, constant pressure valve, the second pressure regulator valve and the 3rd supply air line, the source of the gas, drying machine, constant pressure valve and the connection of the second pressure regulator valve On the 3rd supply air line, the 3rd supply air line is connected with the nozzle.
- 10. automatic liquid nitrogen combined mist cooling system as claimed in claim 1, it is characterised in that the automatic compound spray of liquid nitrogen Fog cooling system also includes control device, and the control device supplies with the liquid nitrogen feedway, oil feeding device, water respectively Device and air feeder are electrically connected with, and the control device is used to control liquid nitrogen feedway, oil feeding device, the water Feedway and air feeder are the flow that the nozzle supplies respective substance.
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| CN201710875090.2A CN107639461B (en) | 2017-09-25 | 2017-09-25 | Automatic liquid nitrogen composite spray cooling system |
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| CN201710875090.2A CN107639461B (en) | 2017-09-25 | 2017-09-25 | Automatic liquid nitrogen composite spray cooling system |
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| CN107639461B CN107639461B (en) | 2023-10-27 |
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| CN108406434A (en) * | 2018-03-09 | 2018-08-17 | 东莞安默琳机械制造技术有限公司 | Carbide cutting method based on liquid nitrogen cooling and lubricating |
| CN109174486A (en) * | 2018-10-09 | 2019-01-11 | 广州汇专工具有限公司 | A kind of low temperature process nozzle |
| CN109686709A (en) * | 2018-12-13 | 2019-04-26 | 上海新储集成电路有限公司 | A kind of fast cooling device and method |
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|---|---|
| CN107639461B (en) | 2023-10-27 |
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