CN207080795U - Micro lubricating mist of oil supply system for machining - Google Patents

Abstract

The utility model discloses a kind of micro lubricating mist of oil supply system for being used to be machined, including spray chamber, at least three venturi atomizers, at least three first appendixs, at least three first control valves, air boost pump and gas tank, at least three second appendixs, at least three second control valves and fluid delivery pipe, the system can produce the small oil mist particles of micron order, the function of increasing pressure carried can ensure that mist of oil can overcome the influence in the high rotating speed centrifugal force of cutter and flow field, pass through the main shaft of rotation at a high speed and cutter endoporus reaches processing district, by controlling the venturi atomizer of varying number to be turned on and off combination to control mist of oil amount；Normal pressure, pressurized air and three or more venturi atomizer form various combination opening ways, to adapt to the difference of cold aperture institute's air demand and oil mass in the difference of Cutters In Mc storehouse；The system is applicable outer cold with interior cold machining processing simultaneously.

Description

Micro lubricating mist of oil supply system for machining

Technical field

The high-speed and high-efficiency Green Cutting Technologies field in machining is the utility model is related to, is used for more particularly to one kind The micro lubricating mist of oil supply system of machining.

Background technology

High-speed Machining Technology is a kind of to have been widely used for aviation, mould, the high-performance technology of automobile and other industries. Traditional cutting fluid type of cooling in process, because machine tool chief axis revolution at a high speed can produce centrifugal force, height around cutter Fast flow field stream, tradition pour into a mould most cutting fluid under the type of cooling and are difficult to enter cutting zone, it is difficult to reach original cooling And lubricant effect.In addition in difficult-to-machine materials such as machining titanium alloy, nickel-base alloys, cutting edge temperature can be substantially increased, if Cooled down in this case using traditional coolant mode, coolant is when reaching cutting zone, due to the temperature of cutting zone It is too high and cause the vaporization of part cutting fluid, hinder cutting fluid to enter machining area so as to form one between coolant and workpiece Boiling film, so cause cutting fluid effectively to be lubricated cutting zone.In process, cutter is only cut Sky knife both states are cut and walk, in cutting, cutter bears high temperature, and when walking sky knife, cutter is under the cooling of cutting fluid, temperature The decline of degree drastically, cutter are constantly changed mutually in both states in process, and high fever solid metal can be rapidly Cooling produces quenching effect, and metal surface can produce quenched martensite tissue, fragility enhancing while making the metal be hardened.Due to quenching Fiery effect is directly proportional to the temperature difference, and improving cutting speed can make temperature higher, therefore stronger quenching effect will be produced by improving speed Cutter life is caused to reduce.For coated cutting tool, coating rapidly cools down after constantly by high fever, and coating can be because by warm Impact causes the generation of thermal stress so that coating surface produces the peeling of fire check, even partial coating, for coated cutting tool For, such case can greatly reduce the service life of coated cutting tool.The other rate of recovery of cutting fluid after processing is very low, And in process due to the splashing and vaporization of cutting fluid, surrounding can be made by floating aerial atomized cutting fluid particle Working environment be deteriorated, influence the health of staff；There are the elements such as chlorine, phosphorus, sulphur in cutting fluid, if at cutting fluid Manage incorrect, very big pollution can be produced to water source soil.

Micro lubricating (Minimum Quantity Lubricant, i.e. MQL) cutting technology is a kind of novel metal processing Lubricating system, i.e. half dry type cutting is also near dry cutting, refer to by compressed gas with extremely micro cutting is oily mixes simultaneously vapour After change, 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 A kind of cutting working method of the lubrication of effect.MQL can greatly reduce the friction between cutter and workpiece and cutter and chip, can rise Rise to suppression temperature, reduce tool wear, preventing adhesion and improve the effect of crudy, while being also beneficial to chip removal, It is few using lubricating fluid, and effect is very notable, while work efficiency is improved, does not pollute the environment.

MQL implementations are divided into external and both built-in lubricating systems：External lubricating system operation principle phase To relatively simple, cutting fluid is imported with gas mixing in spraying cooling system first, will by bull nozzle under using high pressure The millimicro meter level aerosol formed after atomization is constantly ejected into cutting point.It is built-in, fog lubrication is produced inside atomizer Agent, cutter is sent into by machine tool chief axis, sprayed by cutter nozzle.The ratio of distributive value and throughput can adjust.In addition in height In fast machine tooling, because cutting oil particles are larger, and when by cutter endoporus, machine tool chief axis rotate at a high speed produced by compared with Big centrifugal force can be such that cutting oil is attached on inner hole wall, and be agglomerated into cutting oil droplet, therefore to be less than 3 micro- for oil mist particles diameter Rice, and need bigger pressure to overcome the influence of centrifugal force, mist of oil is smoothly reached cutting region.

When the equipment such as the work in-process heart use the MQL types of cooling, machining center has automatic tool changer function, is put in tool magazine It is equipped with the cutter of cold pore size in difference.When being had using interior cryoprobe, due to cold in the interior cryoprobe tool of different tool diameters The aperture of passage and interior cold outlet is different, when workpieces processing needs to switch cutter, such as inner cooling path and interior cold outlet opening Footpath it is relatively small change into aperture it is larger when, relative aperture it is larger interior cryoprobe tool then need bigger mist of oil emitted dose, At this time just needing the mist of oil emitted dose of MQL equipment can automatically adjust to provide the spray amount of most suitable cutter, so be not required to Manual intervention and manually regulation are wanted, the unnecessary workload of workpeople can be reduced, while can also greatly improve work production effect Rate.

Utility model content

In order to overcome shortcoming and defect present in prior art, the purpose of this utility model is that providing one kind is used for machine The micro lubricating mist of oil supply system of tool processing, can produce the small oil mist particles of micron order, the function of increasing pressure carried can ensure Mist of oil can overcome the influence in the high rotating speed centrifugal force of cutter and flow field, pass through the main shaft of rotation at a high speed and cutter endoporus is reached and added Work area, the system control the venturi atomizer of varying number to be turned on and off combination to control mist of oil amount by PLC；Often Pressure, pressurized air and three or more venturi atomizer formation various combination opening ways, to adapt to Cutters In Mc The difference of cold aperture institute's air demand and oil mass in the difference of storehouse.

The purpose of this utility model is achieved through the following technical solutions：

The utility model provides a kind of micro lubricating mist of oil supply system for being used to be machined, including：

Spray chamber, the spray chamber are atomized built with cutting oil, the inner chamber top of the spray chamber provided with least three venturi Shower nozzle, each venturi atomizer have air inlet, inlet port and jet exit；

At least three first appendixs, one end of at least three first appendixs are connected with compressed air source, and this is extremely Air inlet of the other end of few three first appendixs respectively with least three venturi atomizer connects；

At least three first control valves, at least three first control valve are separately positioned at least three first appendixs On to control the conducting and shut-off of at least three first appendixs respectively；

Air boost pump and gas tank, the entrance of the air boost pump are connected with compressed air source, and the air boost pump goes out Mouth is connected with the gas tank, and the air boost pump will be stored into the gas tank after the gas boosting of compressed air source；

At least three second appendixs, one end of at least three second appendixs are connected with the gas tank, and this at least three Air inlet of the other end of the appendix of root second respectively with least three venturi atomizer connects；

At least three second control valves, at least three second control valve are separately positioned at least three second appendixs On to control the conducting and shut-off of at least three second appendixs respectively；

Fluid delivery pipe, the bottom of the fluid delivery pipe connect with the bottom of the spray chamber, the top of the fluid delivery pipe The inlet port with least three venturi atomizer connects respectively.

Further, the internal diameter of the throat position of at least three venturi atomizer is different.

Further, the spray chamber is provided with oil mist outlet, and the system also includes：

Mist of oil delivery pipe, one end of the mist of oil delivery pipe are connected with the oil mist outlet；

Outer cold oil mist conveying switch and outer cold nozzle, wherein the mist of oil delivery pipe, the outer cold oil mist conveying switchs and this is outer Cold nozzle is sequentially connected；

Interior cold oil mist conveying switch, interior cold hollow spindle and interior cryoprobe tool, wherein the mist of oil delivery pipe, the interior cold oil mist are defeated Switch, the interior cold hollow spindle and the interior cryoprobe tool is sent to be sequentially connected.

Further, at least three first control valve and at least three second control valve are magnetic valve, the system Also include：

Pressure sensor, the pressure sensor are used to detect the mist of oil pressure in the spray chamber；

PLC, the PLC respectively with least three first control valve, at least three second control valve and the pressure sensing Device electric signal connects, mist of oil amounts of the PLC according to needed for judging the size of mist of oil pressure in the spray chamber, and then controls this at least Corresponding magnetic valve is opened in three the first control valves and at least three second control valve.

Further, the system also includes fuel tank, oil pump and multiple level sensors, and the plurality of level sensor is arranged on Inside the spray chamber, the fuel tank and the oil pump are connected to the spray chamber by oil pipe, the PLC respectively with the plurality of level sensor Connected with the oil pump electric signal, the liquid level position that the PLC senses according to the plurality of level sensor judges the spray chamber inscribe The amount of oil is cut, and then controls the oil pump to open or shut down to be embodied as the spray chamber automatic oiling.

Further, the system also includes：

First air inlet pipe, one end of first air inlet pipe are connected with compressed air source, the other end respectively with this at least three First appendix connects；

Second air inlet pipe, one end of second air inlet pipe are connected with compressed air source, and the other end is connected with the gas tank, the sky Gas booster pump is arranged in second air inlet pipe；

3rd air inlet pipe, one end of the 3rd air inlet pipe are connected with the gas tank, the other end respectively with this at least three second Appendix connects.

Further, first air inlet pipe is provided with gas conveying switch, filter and magnetic valve, in second air inlet pipe Be provided with filter provided with gas conveying switch, filter and magnetic valve, the 3rd air inlet pipe, the PLC respectively with two electricity Magnet valve electric signal connects.

Further, the fluid delivery pipe is at least three, the bottoms of at least three fluid delivery pipes with the atomization The bottom connection of room, the tops of at least three fluid delivery pipes inlet port with least three venturi atomizer respectively Connection, this is at least equipped with flow control valve in three fluid delivery pipes.

Further, the fluid delivery pipe is one, and the top of the fluid delivery pipe is provided with least three branched pipes, and this is extremely Few inlet port of three branched pipes respectively with least three venturi atomizer connects, and is all provided with least three branched pipe There is flow control valve.

Further, atomization dividing plate is fixed with the spray chamber, is offered in the middle part of the atomization dividing plate multiple through thereon The through hole of lower surface.

The utility model beneficial effect is：The system can refine oil mist particles, solve by cutter at high speeds rotation is produced The problem of raw centrifugal force makes oil mist particles be agglomerated into cutting oil droplet；When replacing cutter is processed, mist of oil pressure and tolerance The phenomenon of change or insufficient pressure is likely to occur, the system can ensure to export mist of oil tolerance stable supplying；The system architecture Simply, various combination opening ways are only formed by normal pressure, pressurization gas and venturi atomizer and automatically controls mist of oil and gas Amount injection, solve required different tolerance and mist of oil amount during multiple operation multicutter processing part；The system is applicable outer cold with interior simultaneously Cold machining is processed, and can be used simultaneously for more lathes.

Brief description of the drawings

Fig. 1 is that the structure for the micro lubricating mist of oil supply system for being used to be machined in the utility model first embodiment is shown It is intended to.

Fig. 2 is the partial structural diagram of a venturi atomizer in Fig. 1.

Fig. 3 is that the structure for the micro lubricating mist of oil supply system for being used to be machined in the utility model second embodiment is shown It is intended to.

In figure：Gas conveying switch 1,9；Filter 2,7,10；Magnetic valve 3,6,8,11,27；Air boost pump 4；Gas tank 5；Check valve 12,22,25；It is atomized dividing plate 13；Venturi atomizer 14；Mist of oil 15；Safety exhaust 16；Mist of oil conveying switch 18、20；Spray chamber 19；Interior cold hollow spindle 21；Outer cold nozzle 23；Interior cryoprobe tool 24；Oil pump 26；Level sensor 28；Fuel tank 29；Cutting oil 30；PLC 31；Pressure sensor 32；Fluid delivery pipe 33；Flow control valve 34；Mist of oil delivery pipe 36；Outer cryoprobe Tool 37；Oil pipe 38；First air inlet pipe 41；Second air inlet pipe 42；3rd air inlet pipe 43；First appendix 51；Second appendix 52； Through hole 130；Air inlet 141；Inlet port 142；Jet exit 143；Oil mist outlet 190；Boost mode A；Constant pressure mode B.

Embodiment

The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings, but is not this reality This is confined to new practical range.

[first embodiment]

As shown in figure 1, the utility model first embodiment provide micro lubricating mist of oil supply system, available for it is interior it is cold and External-cooling type high-speed machine tool is processed, and the system includes：

Spray chamber 19, the spray chamber 19 are provided with least three texts built with cutting oil 30, the inner chamber top of the spray chamber 19 Atomizer 14a, 14b, 14c in mound.Incorporated by reference to Fig. 2, each venturi atomizer 14a, 14b, 14c have air inlet 141, Inlet port 142 and jet exit 143；

At least three first appendixs 51a, 51b, 51c, one end of at least three first appendixs 51a, 51b, the 51c are equal Be connected with compressed air source, the other end of at least three first appendixs 51a, 51b, the 51c respectively with least three literary mound In atomizer 14a, 14b, 14c air inlet 141 connect；

At least three first control valve 6a, 6b, 6c, at least three first control valve 6a, 6b, the 6c are separately positioned on this extremely Few three first appendixs 51a, 51b, 51c are upper to control the conducting of at least three first appendixs 51a, 51b, the 51c respectively With shut-off；

Air boost pump 4 and gas tank 5, the entrance of the air boost pump 4 are connected with compressed air source, the air boost pump 4 Outlet be connected with the gas tank 5, the air boost pump 4 will be stored into the gas tank 5 after the gas boosting of compressed air source；

At least three second appendixs 52a, 52b, 52c, one end of at least three second appendixs 52a, 52b, the 52c are equal Be connected with the gas tank 5, the other end of at least three second appendixs 52a, 52b, the 52c respectively with least three venturi mist The air inlet 141 for changing shower nozzle 14a, 14b, 14c connects；

At least three second control valve 8a, 8b, 8c, at least three second control valve 8a, 8b, the 8c are separately positioned on this extremely Few three second appendixs 52a, 52b, 52c are upper to control the conducting of at least three second appendixs 52a, 52b, the 52c respectively With shut-off；

Fluid delivery pipe 33, the bottom of the fluid delivery pipe 33 connect with the bottom of the spray chamber 19, the fluid delivery pipe Inlet port 142 of 33 top respectively with least three venturi atomizer 14a, 14b, 14c connects.

Further, at least three first control valve 6a, 6b, the 6c and at least three second control valve 8a, 8b, the 8c are equal For magnetic valve, the system also includes：

Pressure sensor 32, the pressure sensor 32 are used to detect the mist of oil pressure in the spray chamber 19；

PLC 31, the PLC 31 respectively with least three first control valve 6a, 6b, 6c, this at least three second control Valve 8a, 8b, 8c connect with the electric signal of pressure sensor 32, and the PLC 31 sentences according to the size of mist of oil pressure in the spray chamber 19 Mist of oil amount needed for disconnected cooling and lubricating, and then control at least three first control valve 6a, 6b, the 6c and at least three second control Corresponding magnetic valve is opened in valve 8a, 8b, 8c processed.

Further, the spray chamber 19 is provided with oil mist outlet 190, and the system also includes：

Mist of oil delivery pipe 36, one end of the mist of oil delivery pipe 36 are connected with the oil mist outlet 190；

Outer cold oil mist conveying switch 18 and outer cold nozzle 23, wherein the mist of oil delivery pipe 36, the outer cold oil mist conveying switch 18 are sequentially connected with the outer cold nozzle 23；

Interior cold oil mist conveying switch 20, interior cold hollow spindle 21 and interior cryoprobe tool 24, wherein the mist of oil delivery pipe 36, this is interior Cold oil mist conveying switch 20, the interior cold hollow spindle 21 and the interior cryoprobe tool 24 are sequentially connected.

Further, the system also includes：

First air inlet pipe 41, one end of first air inlet pipe 41 are connected with compressed air source, the other end respectively with this at least Three first appendix 51a, 51b, 51c connections；

Second air inlet pipe 42, one end of second air inlet pipe 42 are connected with compressed air source, and the other end connects with the gas tank 5 Connect, the air boost pump 4 is arranged in second air inlet pipe 42；

3rd air inlet pipe 43, one end of the 3rd air inlet pipe 43 are connected with the gas tank 5, the other end respectively with this at least three Second appendix 52a, 52b, 52c connections.

Further, first air inlet pipe 41 is provided with gas conveying switch 9, filter 10, magnetic valve 11 and unidirectional Valve 12, second air inlet pipe 42 are provided with gas conveying switch 1, filter 2 and magnetic valve 3, the 3rd air inlet pipe 43 and are provided with Filter 7, the PLC 31 are connected with the magnetic valve 11 and the electric signal of magnetic valve 3 respectively.Gas conveying switch 9 close to this The porch of one air inlet pipe 41 is set, and gas conveying switch 1 is set close to the porch of second air inlet pipe 42.

In the present embodiment, gas conveying switch 9, filter 10, magnetic valve 11 and check valve 12 are in the first air inlet pipe 41 Sequentially link together.When lathe works, gas conveying switch 9 is by manually opening and maintaining normally open.Work as PLC When 31 control magnetic valves 11 are opened and control corresponding magnetic valve opening at least three first control valve 6a, 6b, the 6c, first Air inlet pipe 41 accesses compressed air, then along the gas transmission of corresponding conducting in this at least three first appendixs 51a, 51b, 51c Pipe reaches corresponding shower nozzle at least three venturi atomizer 14a, 14b, 14c, atmospheric compression air and cutting oil 30 Mixed in venturi atomizer 14a, 14b, 14c, then sprayed at a high speed into spray chamber 19 and form fine mist of oil 15. This, the pressure of atmospheric compression air can be between 0.5~0.8Mpa.

In the present embodiment, gas conveying switch 1, filter 2, magnetic valve 3 and air boost pump 4 are in the second air inlet pipe 42 Sequentially link together and access gas tank 5.When lathe works, gas conveying switch 1 is by manually opening and remaining normally opened State.When PLC 31 controls magnetic valve 3 to open and controls corresponding magnetic valve at least three second control valve 8a, 8b, the 8c During opening, the second air inlet pipe 42 access compressed air, then it will be stored into by air boost pump 4 after the gas boosting of compressed air In gas tank 5, the pressurization gas in gas tank 5 is further along the 3rd air inlet pipe 43 and at least three second appendixs 52a, 52b, the 52c The appendix of middle corresponding conducting reaches corresponding shower nozzle at least three venturi atomizer 14a, 14b, 14c, supercharging pressure Contracting air and cutting oil 30 are mixed in venturi atomizer 14a, 14b, 14c, are then sprayed at a high speed into spray chamber 19 Form fine mist of oil 15.

Wherein, it can be same to access the first air inlet pipe 41 and the compressed air source of the second air inlet pipe 42, so need not Multiple compressed air sources are set.

Further, collateral branch's pipeline 44 is also associated with the second air inlet pipe 42, collateral branch's pipeline 44 is provided with check valve 25. Gas conveying switch 1, filter 2, check valve 25, gas tank 5 are connected, when the air pressure in gas tank 5 is less than normal pressure, check valve 25 Open, the air pressure in gas tank 5 can be supplemented rapidly.

Normal pressure supplies and supercharge all uses pulse intelligent plenum system, is automatically controlled by PLC 31, when pressure passes When sensor 32 detects that pressure is higher than setting value in spray chamber 19, controlled by PLC 31 and close in gas circuit the magnetic valve to have worked； When detecting that pressure is less than setting value in spray chamber 19, the magnetic valve opened and work is needed in gas circuit is controlled by PLC 31；This Function can accurately control the range of pressure values in spray chamber 19, the pressure formed in intelligent control spray chamber 19 with inlet end Difference, so as to ensure and stabilize the effect of atomization.

In the present embodiment, atomization dividing plate 13 is fixed with the spray chamber 19, the middle part of the atomization dividing plate 13 offers multiple Through the through hole 130 of its upper and lower surface.In fine mist of oil 15 in the spray chamber 19, there are part oil mist particles to be gathered into cutting Oil droplet, uniform aperture is provided with the median septum 13 of spray chamber 19, and the drop that mist of oil is formed can pass through this hole and collect following Fluid region.

In the present embodiment, the fluid delivery pipe 33 is at least three, the bottoms of at least three fluid delivery pipes 33 with The bottom connection of the spray chamber 19, the top of at least three fluid delivery pipes 33 is atomized with least three venturi respectively sprays Head 14a, 14b, 14c inlet port 142 connect, and this is at least equipped with flow control valve 34 in three fluid delivery pipes 33, may be used also The size of every oil pump capacity of fluid delivery pipe 33 is controlled to adjust flow control valve 34 manually.

As shown in Fig. 2 venturi atomizer 14a, 14b, 14c that the present embodiment uses are that one kind makes two kinds of fluid high-effectives Well-mixed special equipment, itself does not have moving component, when air-flow by one by gradually small greatly and then by small gradually big pipeline When (venturi throat), air-flow increases through flow velocity during narrow, and pressure declines, make it is front and rear form pressure differential, when throat has During the entrance of one more pipe with small pipe diameter, negative pressure is formed, cutting oil 30 is drawn to come up simultaneously out of spray chamber 19 by fluid delivery pipe 33 Enter venturi atomizer 14a, 14b, 14c from inlet port 142, oil is formed under its venturi action of venturi atomizer Mist particle, driven down and be injected into spray chamber 19 by compressed gas.Design discharge regulating valve 34 is controlled in fluid delivery pipe 33 The uninterrupted of system cutting oil 30, you can the ratio of control cutting oil 30 and compressed gas.

Preferably, the internal diameter of at least three venturi atomizer 14a, 14b, 14c throat position is different, its Middle throat position be corresponding to the internal diameter minimum position of venturi atomizer at, as shown in the C in Fig. 2.In the present embodiment It is assumed that the internal diameter of venturi atomizer 14a, 14b, 14c throat position increases successively, i.e. venturi throat internal diameter 14a<14b <14c, but not limited to this.By the way that at least three venturi atomizer 14a, 14b, 14c throat's internal diameter are arranged to respectively not Identical, different venturi atomizer 14a, 14b, 14c can electromagnetism different from magnetic valve 8a, 8b, 8c and 6a, 6b, 6c The unlatching of valve realizes more shower nozzle combinations to arrange in pairs or groups.

Venturi atomizer 14a, 14b, 14c of atmospheric compression air and booster compression air and different inner diameters can be with Formed and produce the combination of different sizes of mist of oil amount, venturi throat internal diameter 14a<14b<14c, according to bigger pressure differential mist of oil amount more Greatly, the faster pressure differential of the smaller flow velocity of venturi atomizer internal diameter is bigger, can obtain a series of different permutation and combination.Example Such as, the combination under constant pressure mode B has：6a+14a；6b+14b；6c+14c；(6a+14a)+(6b+14b)；(6a+14a)+(6c+ 14c)；(6b+14b)+(6c+14c) etc.；Combination under boost mode A has：8a+14a；8b+14b；8c+14c；(8a+14a)+ (8b+14b)；(8a+14a)+(8c+14c), (8b+14b)+(8c+14c) etc.；And for example, under constant pressure mode B and boost mode A It has been mutually combined：(6a+14a)+(8a+14a)；(6a+14a)+(8b+14b)；(6a+14a)+(8c+14c)；(6b+14b)+(8a +14a)；(6b+14b)+(8b+14b)；(6b+14b)+(8c+14c) etc., a series of reality can be obtained by permutation and combination relation Example does not illustrate one by one.Different aerosols and mist of oil amount are needed according to different inner diameters cutter, the combination more than corresponds to various knives Tool is processed, so as to reach different tool sharpening requirements.

When cutter inner cooling aperture is the cutter of small-bore, in cutting process is carried out, it is only necessary to which venturi is atomized Shower nozzle 14a is opened, and now constant pressure mode B atmospheric compression air enters filter 10, air by gas conveying switch 9 Check valve 12 is flowed through after filtration drying, now magnetic valve 6a is opened, and gas reaches venturi atomization spray by appendix 51a Head 14a, fluid is atomized into mist of oil 15 at shower nozzle 14a, enters in spray chamber 19.Mist of oil 15 in spray chamber 19 passes through oil Mist delivery pipe 36 enters interior cryoprobe tool 24 or outer cold nozzle 23 is ejected into machining region.

When mist of oil amount is too small in process by unlatching constant pressure mode B, boost mode A can be opened, now supercharging pressure Contracting air reaches filter 2 by gas conveying switch 1, and air passes through filtration drying, and air boost pump 4 is started working, supercharging Gas is entered in gas tank 5, and the pressurization gas stream in gas tank 5 reaches magnetic valve 8a by filter 7, and now magnetic valve 8a is opened, Gas is reached at venturi atomizer 14a by appendix 52a, and now the pressure difference increase at shower nozzle 14a, increases mist of oil amount Greatly, while increasing the pressure in spray chamber 19, interior cryoprobe tool 24 or outer cold nozzle 23 is made to be ejected into machining region Mist of oil amount and air pressure increase.

When tool dimension is large scale cutter, now, gas conveying switch 9 is opened, and constant pressure mode B atmospheric compression is empty Gas enters filter 10, and air flows through check valve 12 after filtration drying, and now magnetic valve 6c is opened, and gas passes through appendix 51c conveyance conduits reach venturi atomizer 14c, and fluid is atomized into mist of oil 15 at shower nozzle 14c, enters spray chamber 19 In.

, can be with if opening constant pressure mode B mist of oil amount and during too small air pressure in process during large scale tool sharpening Boost mode A is opened, now booster compression air reaches filter 2 by gas conveying switch 1, and air passes through filtration drying, Air boost pump 4 is started working, and pressurization gas is entered in gas tank 5, and the pressurization gas stream in gas tank 5 reaches electricity by filter 7 Magnet valve 8c, now magnetic valve 8c unlatchings, gas are reached at shower nozzle 14c by appendix 52c, and now the pressure difference at shower nozzle 14c increases Greatly, increase mist of oil amount, while increasing the pressure in spray chamber 19, be ejected into interior cryoprobe tool 24 or outer cold nozzle 23 Mist of oil amount and the air pressure increase in machining region.

These are only it is several in the case of utilization for example, actually can also according to needed for mist of oil amount size, lead to The unlatchings of different magnetic valves in control magnetic valve 8a, 8b, 8c and 6a, 6b, 6c is crossed to realize different shower nozzles combinations, to meet difference The mist of oil amount demand of cutter cooling and lubricating.

Magnetic valve 8a, 8b, 8c and 6a, 6b, 6c are connected with PLC 31, and PLC 31 is by controlling the unlatchings of different magnetic valves To realize the pattern of different shower nozzle combinations.The nozzle pattern of different tool bores is corresponded to by lathe, when lathe carries out tool changing It is signaled to PLC 31, PLC 31 performs the unlatching of programme-control magnetic valve compiled in advance, to realize different pore size Cutter lubrication.

The switch of all magnetic valves automatically controls by PLC in the present apparatus, due to being led in major diameter during 24 processing of cryoprobe tool When causing the situation of gas pressure and hypoventilation, pass through for controlling magnetic valve 6a, 6b, 6c and magnetic valve 8a, 8b, 8c to open Number can reach control mist of oil amount and the purpose of air pressure with combined situation.

Mist of oil 15 can out pass through mist of oil delivery pipe 36, interior cold oil mist conveying switch 20, interior cold sky respectively from spray chamber 19 Heart main shaft 21 reaches cold working in the interior progress of cryoprobe tool 24；Or mist of oil 15 can out convey by mist of oil respectively from spray chamber 19 Pipe 36, outer cold oil mist conveying switch 18 reach outer cold nozzle 23 by oil pipe and carry out outer cold working；Or mist of oil 15 is from spray chamber 19 are out supplied to interior cold working and outer cold working to use simultaneously.

When using the cold type of cooling in MQL, mist of oil conveying switch 20 is opened, mist of oil passes through the interior cold He of hollow spindle 21 In interior cryoprobe tool 24, mist of oil sprays from the outlet of interior cryoprobe tool 24, realizes the effect of cooling and lubricating.When using cold square outside MQL During formula, mist of oil conveying switch 18 is opened, final mist of oil reaches outer cryoprobe tool 37 by outer cold nozzle 23 and is lubricated cooling.When When simultaneously using cold in the MQL and outer cold type of cooling, mist of oil conveying switch 18,20 is opened, mist of oil passes through interior cold hollow master Axle 21 and interior cryoprobe tool 24 spray, while mist of oil reaches outer cryoprobe tool 37 by outer cold nozzle 23.

Further, the system also includes fuel tank 29, oil pump 26 and multiple level sensor 28a, 28b, 28c, the plurality of Level sensor 28a, 28b, 28c are arranged on inside the spray chamber 19, and the fuel tank 29 and the oil pump 26 are connected to by oil pipe 38 The spray chamber 19, the PLC 31 are connected with the plurality of level sensor 28a, 28b, 28c and the electric signal of oil pump 26 respectively, should PLC 31 judges to cut oil 30 in the spray chamber 19 according to the plurality of level sensor 28a, 28b, 28c liquid level position sensed Amount, and then control the oil pump 26 to open or shut down to be embodied as the automatic oiling of spray chamber 19.

Magnetic valve 27 and check valve 22 are additionally provided with oil pipe 38, fuel tank 29 and magnetic valve 27, oil pump 26, check valve 22 are logical Cross oil pipe 38 and be connected to spray chamber 19.The PLC 31 is also connected with the electric signal of magnetic valve 27., should when being refueled to spray chamber 19 The control magnetic valves 27 of PLC 31 are opened and control oil pump 26 starts.Check valve 22 can prevent the fluid in spray chamber 19 from passing through oil Pipe 38 flows backward to fuel tank 29.

Level sensor is three in the present embodiment, and three level sensors 28a, 28b, 28c are arranged in spray chamber 19 In close to bottom and close between dividing plate 13.Wherein, liquid level sensor 28a position highest, liquid level sensor 28c position is most Low, liquid level sensor 28b position is between liquid level sensor 28a and liquid level sensor 28c.According to liquid level sensor 28a, The liquid level position that 28b, 28c are sensed, PLC 31, the control oil pumps of PLC 31 are fed back to when sensor 28b receives liquid level signal 26 open automatic oiling.PLC 31 is fed back to when sensor 28a receives liquid level signal, the control oil pumps 26 of PLC 31 stop adding Oil.Illustrate that automatic oiling function breaks down, it is necessary to carry out shutdown processing when sensor 28c receives liquid level signal.

For system safety, the system is additionally provided with safety exhaust 16, safety exhaust 16 be separately mounted to gas tank 5 and The top of spray chamber 19.When pressure in gas tank 5 and spray chamber 19 exceedes the upper limit, safety exhaust 16 automatically opens up exhaust and let out Pressure, plays a part of maintaining system safety.

When Complex Parts are processed, cutter sizes specification and interior cold aperture in machining center differ, and required mist of oil amount is gentle Amount is also different, and large scale cutter needs more mist of oils and tolerance, and small size cutter is conversely, the system can pass through multiple combinations mode It is to provide optimal mist of oil amount and tolerance supply option in process by PLC controls, solves when venturi atomizer hole When footpath is less than cutter inner cooling hole the problem of mist of oil amount insufficient supply, the system is connected with using lathe, and intelligence changes operational mode, Manual operation is not required to, improves production efficiency.Other supercharging device brings some excellent performances, overcomes the effect of centrifugal force, Overcome high speed rotational flow field, ensure that mist of oil does not converge before cutting region is reached, pressurized effect is outstanding in deep hole and embedded SMA actuators To be notable.The system also has an automatic oiling function, being capable of automatic oiling during oily hypovolia.

[second embodiment]

As shown in figure 3, micro lubricating mist of oil supply system and first embodiment that the utility model second embodiment provides Micro lubricating mist of oil supply system in (Fig. 1) is essentially identical, and difference is, in the present embodiment, the fluid delivery pipe 33 be one, and the top of the fluid delivery pipe 33 is provided with least three branched pipes, at least three branched pipe respectively with this at least Three venturi atomizers 14a, 14b, 14c inlet port 142 are connected, and Flow-rate adjustment is equipped with least three branched pipe Valve 34.Above-mentioned first embodiment is compared, the present embodiment can reduce the quantity of fluid delivery pipe 33, and structure is simpler.

Remaining structure and operation principle of the present embodiment are identical with first embodiment, repeat no more here.

Above-mentioned embodiment is the embodiment of utility model, is not intended to limit implementation and the right model of utility model Enclose, the equivalence changes and modification that all contents according to described in the apllied protection domain of the utility model patent are made all should It is included in scope of patent protection of the present utility model.

Claims (10)

1. A kind of 1. micro lubricating mist of oil supply system for being used to be machined, it is characterised in that including：

   Spray chamber (19), the spray chamber (19) is oily (30) built with cutting, and the inner chamber top of the spray chamber (19) is provided with least three Individual venturi atomizer (14a, 14b, 14c), each venturi atomizer (14a, 14b, 14c) have air inlet (141), Inlet port (142) and jet exit (143)；

   At least three first appendixs (51a, 51b, 51c), one end of at least three first appendixs (51a, 51b, 51c) are equal Be connected with compressed air source, the other ends of at least three first appendixs (51a, 51b, 51c) respectively with least three text Air inlet (141) connection of atomizer (14a, 14b, 14c) in mound；

   At least three first control valves (6a, 6b, 6c), at least three first control valve (6a, 6b, 6c) are separately positioned on this extremely To control at least three first appendixs (51a, 51b, 51c) respectively on few three first appendixs (51a, 51b, 51c) Conducting and shut-off；

   Air boost pump (4) and gas tank (5), the entrance of the air boost pump (4) are connected with compressed air source, the air boost pump (4) outlet is connected with the gas tank (5), and the air boost pump (4) will be stored into the gas tank after the gas boosting of compressed air source (5) in；

   At least three second appendixs (52a, 52b, 52c), one end of at least three second appendixs (52a, 52b, 52c) are equal Be connected with the gas tank (5), the other ends of at least three second appendixs (52a, 52b, 52c) respectively with least three literary mound In atomizer (14a, 14b, 14c) air inlet (141) connection；

   At least three second control valves (8a, 8b, 8c), at least three second control valve (8a, 8b, 8c) are separately positioned on this extremely To control at least three second appendixs (52a, 52b, 52c) respectively on few three second appendixs (52a, 52b, 52c) Conducting and shut-off；

   Fluid delivery pipe (33), the bottom of the fluid delivery pipe (33) connect with the bottom of the spray chamber (19), fluid conveying The top of pipe (33) connects with the inlet port (142) of at least three venturi atomizer (14a, 14b, 14c) respectively.
2. 2. the micro lubricating mist of oil supply system according to claim 1 for being used to be machined, it is characterised in that this is at least The internal diameter of the throat position of three venturi atomizers (14a, 14b, 14c) is different.
3. 3. the micro lubricating mist of oil supply system according to claim 1 for being used to be machined, it is characterised in that the atomization Room (19) is provided with oil mist outlet (190), and the system also includes：

   Mist of oil delivery pipe (36), one end of the mist of oil delivery pipe (36) are connected with the oil mist outlet (190)；

   Outer cold oil mist conveying switch (18) and outer cold nozzle (23), wherein the mist of oil delivery pipe (36), the outer cold oil mist conveying are opened Close (18) and the outer cold nozzle (23) is sequentially connected；

   Interior cold oil mist conveying switch (20), interior cold hollow spindle (21) and interior cryoprobe tool (24), wherein the mist of oil delivery pipe (36), The interior cold oil mist conveying switch (20), the interior cold hollow spindle (21) and the interior cryoprobe tool (24) are sequentially connected.
4. 4. the micro lubricating mist of oil supply system according to claim 1 for being used to be machined, it is characterised in that this is at least Three the first control valves (6a, 6b, 6c) and at least three second control valve (8a, 8b, 8c) are magnetic valve, and the system is also wrapped Include：

   Pressure sensor (32), the pressure sensor (32) are used to detect the mist of oil pressure in the spray chamber (19)；

   PLC (31), the PLC (31) respectively with least three first control valve (6a, 6b, 6c), this at least three second control Valve (8a, 8b, 8c) connects with pressure sensor (32) electric signal, and the PLC (31) is according to the interior mist of oil pressure of spray chamber (19) Size judge needed for mist of oil amount, and then control at least three first control valve (6a, 6b, 6c) and this at least three second Corresponding magnetic valve is opened in control valve (8a, 8b, 8c).
5. 5. the micro lubricating mist of oil supply system according to claim 4 for being used to be machined, it is characterised in that the system Also include fuel tank (29), oil pump (26) and multiple level sensors (28a, 28b, 28c), the plurality of level sensor (28a, 28b, 28c) spray chamber (19) inside is arranged on, the fuel tank (29) and the oil pump (26) are connected to the atomization by oil pipe (38) Room (19), the PLC (31) are connected with the plurality of level sensor (28a, 28b, 28c) and oil pump (26) electric signal respectively, should The liquid level position that PLC (31) senses according to the plurality of level sensor (28a, 28b, 28c) judges spray chamber (19) inscribe The amount of oily (30) is cut, and then controls the oil pump (26) to open or shut down to be embodied as spray chamber (19) automatic oiling.
6. 6. the micro lubricating mist of oil supply system according to claim 4 for being used to be machined, it is characterised in that the system Also include：

   First air inlet pipe (41), one end of first air inlet pipe (41) are connected with compressed air source, the other end respectively with this at least Three first appendix (51a, 51b, 51c) connections；

   Second air inlet pipe (42), one end of second air inlet pipe (42) are connected with compressed air source, and the other end connects with the gas tank (5) Connect, the air boost pump (4) is arranged in second air inlet pipe (42)；

   3rd air inlet pipe (43), one end of the 3rd air inlet pipe (43) are connected with the gas tank (5), the other end respectively with this at least three The appendix of root second (52a, 52b, 52c) connects.
7. 7. the micro lubricating mist of oil supply system according to claim 6 for being used to be machined, it is characterised in that this first Air inlet pipe (41) is provided with gas conveying switch (9), filter (10) and magnetic valve (11), second air inlet pipe (42) and is provided with Gas conveying switch (1), filter (2) and magnetic valve (3), the 3rd air inlet pipe (43) are provided with filter (7), the PLC (31) it is connected respectively with the magnetic valve (11) and magnetic valve (3) electric signal.
8. 8. the micro lubricating mist of oil supply system according to claim 1 for being used to be machined, it is characterised in that the fluid Delivery pipe (33) is at least three, and the bottoms of at least three fluid delivery pipes (33) connects with the bottom of the spray chamber (19) It is logical, the tops of at least three fluid delivery pipes (33) respectively with least three venturi atomizer (14a, 14b, 14c) Inlet port (142) connection, this is at least equipped with flow control valve (34) on three fluid delivery pipes (33).
9. 9. the micro lubricating mist of oil supply system according to claim 1 for being used to be machined, it is characterised in that the fluid Delivery pipe (33) is one, and the top of the fluid delivery pipe (33) is provided with least three branched pipes, at least three branched pipe point Do not connected with the inlet port (142) of at least three venturi atomizer (14a, 14b, 14c), at least three branched pipe It is equipped with flow control valve (34).
10. 10. the micro lubricating mist of oil supply system according to claim 1 for being used to be machined, it is characterised in that the mist Change and atomization dividing plate (13) is fixed with room (19), offered in the middle part of the atomization dividing plate (13) multiple through the logical of its upper and lower surface Hole (130).