A kind of metal cutting process low-temperature carbon dioxide cooling and lubricating system
Technical field
The present invention relates to metal working technical areas, cold more particularly to a kind of metal cutting process low-temperature carbon dioxide
But lubricating system.
Background technique
Usually with a large amount of cutting fluids in traditional cutting process, flow is up to 80-100L/min.Although
Cutting fluid plays an important role in cooling, lubrication and auxiliary chip removal, but it generates resource consumption, environmental and human health impacts
A series of side effects.It is nuisanceless now, clean, the green manufacturing of low energy consumption has become the development of 21 century machinery manufacturing industry
Direction.
Currently used Green Cutting Technologies are main are as follows: pure mist of oil MQL, low-temperature cold wind (- 30 DEG C) cooling technology, liquid nitrogen
(- 179 DEG C) cooling technology, carbon dioxide (- 78 DEG C) cooling technology etc..MQL is cooling relative to liquid nitrogen and carbon dioxide is cooling
Technology has the advantages that equipment is simply easy to use and lubricant effect is good.However, as difficult-to-machine material is more and more extensive
Using, and increasingly higher demands, the cooling insufficient spy of the pure mist of oil MQL of tradition are proposed to cutting process cooling and lubricating
Point is more obvious.Cold wind cutting is to wash away processing district strongly with -50 to -30 DEG C of cold wind in process, to drop
A kind of cutting technology of low cutter and workpiece temperature.Its cutting system is mainly by cold wind generator and cutting processing system group
At.During low-temperature cold wind is cooling, since the kinetic energy of gaseous medium is small, so when flowing to cutting region vulnerable to cutting position, workpiece
Shape, the obstruction of cutter and lathe position and change direction.And the lubrication between cutter and workpiece material is poor, and noise etc. is asked
Topic is also very serious, while cryogenic gas generation device is also more complicated.Therefore low-temperature cold wind cooling technology is difficult to carry out large area
It promotes and applies.(- 179 DEG C) of liquid nitrogen cooling cuttings are to utilize liquid nitrogen characteristic by nitrogen under pressure using low boiling point working medium
Generating device nitrogen generated is sent into cutting point in the form of liquid nitrogen, instead of the cutting process of a large amount of finishes.During liquid nitrogen is cooling, by
Error can be generated in the processing dimension of the effect of expanding with heat and contract with cold of metal, part, and liquid nitrogen is readily volatilized, so transmission is relatively more tired
Difficulty, and temperature is lower at nozzle, easily build-ups ice, plug nozzle etc..Low temperature CO2 (- 78 DEG C) has been found to be a kind of excellent
Cooling medium, and the CO2 under high pressure conditions and organic solvent (each class lubricating oil etc.) have excellent compatibility, can effectively realize and cut
Cut the cooling and lubrication in process.
Summary of the invention
The purpose of the present invention is to provide a kind of efficiently cooling metal cutting process low-temperature carbon dioxide cooling systems.
The technical solution used in the present invention is:
A kind of metal cutting process low-temperature carbon dioxide cooling and lubricating system, including carbon dioxide conveyor module, dioxy
A capillary switching device is arranged in the output end for changing carbon conveyor module, and capillary switching device is by capillary connection in one
If the single tube of cavity turns concentric tube device, the output end connection one that single tube turns concentric tube device accommodates pipe centered on capillary
The output end of concentric tube, concentric tube connects spray nozzle device, and the cavity for having a compressed gas module and single tube to turn concentric tube device is logical
Cross pipeline connection.
It is further used as the improvement of technical solution of the present invention, and compressed gas module includes the gas source installed in order, filtering
And pressure regulator, switch, heating component.
It is further used as the improvement of technical solution of the present invention, and heating component includes temperature control equipment and temperature detection dress
It sets.
It is further used as the improvement of technical solution of the present invention, and carbon dioxide conveyor module includes the liquid two installed in order
Aoxidize carbon source, control switch.
It is further used as the improvement of technical solution of the present invention, and capillary is made of cold-resistant high pressure resistant material.
It is further used as the improvement of technical solution of the present invention, and capillary switching device turns between concentric tube device to single tube
Capillary is dismountable ladder capillary.
It is further used as the improvement of technical solution of the present invention, and the capillary caliber of the output end of capillary switching device is less than
Single tube turns the capillary caliber of the input terminal of concentric tube device.
It is further used as the improvement of technical solution of the present invention, and the output end of capillary switching device is defeated with a lubrication module
Outlet, which is converged, is connected with an oil liquid electric hybrid module, and the output end of oil liquid electric hybrid module turns concentric through single tube by capillary connection
Pipe device.
It is further used as the improvement of technical solution of the present invention, and lubrication module includes the lubricant source installed in order, oil mass
Controller, oil pump component.
It is further used as the improvement of technical solution of the present invention, and the design of the output end of capillary switching device has first unidirectional
Valve, the output end design for lubricating module have second one-way valve.
Beneficial effects of the present invention: this metal cutting process low-temperature carbon dioxide cooling and lubricating system, by by liquid
Carbon dioxide is transformed into carbon dioxide solid little particle and gas mixture with lower temperature after constant enthalpy decompression at nozzle, empty by compression
Gas carries carbon dioxide solid little particle and directly hit as propellant reaches cooling in tool surface progress contact heat exchange
Effect, but also lubricant can be added into liquid carbon dioxide according to actual needs, pass through low-temperature carbon dioxide and lubricating oil
Combination carries out cooling and lubricating, and the invention has both efficient cooling and lubricating action, and of reduced contamination.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings:
Fig. 1 is the total system schematic diagram of the embodiment of the present invention;
Fig. 2 is the total system schematic diagram with lubrication module of the embodiment of the present invention;
Fig. 3 is that the single tube of the embodiment of the present invention turns concentric tube device view;
Fig. 4 is the detachable ladder capillary view of the embodiment of the present invention.
Specific embodiment
Referring to figs. 1 to 4, the present invention is a kind of metal cutting process low-temperature carbon dioxide cooling and lubricating system,
Including carbon dioxide conveyor module 2, a capillary switching device 3 is arranged in the output end of carbon dioxide conveyor module 2, and capillary turns
Connection device 3 turns concentric tube device 4 by the single tube that the connection of capillary 6 sets cavity 41 in one, and single tube turns concentric tube device 4
Output end connection one accommodate the concentric tube 9 of pipe centered on capillary 6, the output end of concentric tube 9 connects spray nozzle device 5, has
One compressed gas module 1 is connect with the cavity 41 that single tube turns concentric tube device 4 by a pipeline.
This metal cutting process low-temperature carbon dioxide cooling and lubricating system, by by liquid carbon dioxide in spray nozzle device
It is transformed into carbon dioxide solid little particle and gas mixture with lower temperature after constant enthalpy decompression at 5, by compressed air as propellant
It carries carbon dioxide solid little particle and directly hits and reach cooling effect in tool surface progress contact heat exchange, but also can
Lubricant is added into liquid carbon dioxide according to actual needs, is mixed by low-temperature carbon dioxide with lubricating oil and carries out cooling profit
Sliding, the invention has both efficient cooling and lubricating and lubricating action, and of reduced contamination.
As a preferred embodiment of the present invention, compressed gas module 1 includes the compressed gas source 11 installed in order, filtering
And pressure regulator 12, switch 13, heating component 14.Compressed gas source 11 provides compressed gas, and compressed gas is played as dioxy
Change the effect of the propellant of carbon solid granule.Compressed gas source 11 by tracheae is connected to filter and with pressure-detecting device
Filtering and pressure regulator 12, then are connected to switch 13 by tracheae, then again by tracheae be connected to band temperature control equipment and
In the heating component 14 of temperature-detecting device, heating component 14 is used for heated compression gas, and the compressed gas after heating is as same
9 outer layer gas of heart pipe can prevent the outer wall hanging of capillary 6 white, and temperature-detecting device is for detecting heating component 14 to prevent
Heat.Compressed gas access single tube by heating enters 9 outer layer of concentric tube after turning concentric tube device 4, and concentric tube 9 is connected to nozzle
Device 5.
This metal cutting process is liquid carbon dioxide in nozzle dress with the principle of low-temperature carbon dioxide cooling and lubricating system
It sets and is transformed into carbon dioxide small solid particles and gas mixture with lower temperature after constant enthalpy decompression at 5, by compressed air as propulsion
Agent, which carries carbon dioxide solid little particle and directly hits, reaches cooling effect in cutter and workpiece surface progress contact heat exchange
Fruit.It is found according to the pressure-enthalpy chart of carbon dioxide, to obtain carbon dioxide little particle, there are mainly two types of modes: carbon dioxide liquid
Or the decompression of gas-liquid two-phase constant enthalpy is at solid gas two-phase mixture.When measuring the solid of gas-liquid two-phase carbon dioxide transitions by experiment about
6% or so of total carbon dioxide capacity is accounted for, two liquid carbon dioxides account for about the 45% of total carbon dioxide capacity when changing solid, by liquid
The solid that carbon dioxide constant enthalpy is depressured is more, relatively inexpensive material benefit.
As a preferred embodiment of the present invention, carbon dioxide conveyor module 2 includes the liquid titanium dioxide installed in order
Carbon source 21 and control switch 22.Liquid carbon dioxide source 21 provides liquid carbon dioxide and plays the role of as cryogen raw material.
After liquid carbon dioxide is connected to gas source control switch 22 by high pressure resistant refrigerator pipe, it is connected to capillary switching device 3, Zhi Houlian
It is connected to capillary 6 made of cold-resistant high pressure resistant material, capillary 6, which is accessed again after single tube turns concentric tube device 4, enters the work of concentric tube 9
Centered on manage, concentric tube 9 is connected to spray nozzle device 5.Capillary 6 is used to control the carbon dioxide solid sprayed at spray nozzle device 5
Short grained volume.Replaceable will be made by being connected to single tube from capillary switching device 3 and turning the capillary 6 between concentric tube device 4
Formula ladder capillary, first segment capillary need smaller than the caliber of second segment capillary.Consumption energy is flowed in pipe according to fluid
Amount leads to the principle of pressure drop, and the length of transformation capillary 6 can be used for controlling the flow velocity of liquid carbon dioxide in pipe, to control liquid
The dosage of state carbon dioxide.
As a preferred embodiment of the present invention, the output end of the output end of capillary switching device 3 and a lubrication module 7
Converge and be connected with an oil liquid electric hybrid module 8, the output end of oil liquid electric hybrid module 8 turns concentric through single tube by the connection of capillary 6
Pipe device 4.Lubrication module 7 includes lubricant source 71, fuel-flow controller 72, the miniature oil pump component 73 installed in order.Capillary
The caliber of the capillary 6 of the output end of pipe switching device 3 is less than the caliber of the capillary 6 of 8 output end of oil liquid electric hybrid module.Capillary
The output end design of pipe switching device 3 has the first check valve 31, and the output end design of lubrication module 7 has second one-way valve 74, prevents
Only pressurized liquid carbon dioxide flows backwards or flows into lubricant line.
Certainly, the invention is not limited to above embodiment, and those skilled in the art are without prejudice to originally
Equivalent deformation or replacement can be also made under the premise of spirit, these equivalent variation or replacement are all contained in the application right
It is required that in limited range.