CN114310472B - Intelligent cooling and lubricating device and method applied to numerical control machine tool - Google Patents

Intelligent cooling and lubricating device and method applied to numerical control machine tool Download PDF

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CN114310472B
CN114310472B CN202210053005.5A CN202210053005A CN114310472B CN 114310472 B CN114310472 B CN 114310472B CN 202210053005 A CN202210053005 A CN 202210053005A CN 114310472 B CN114310472 B CN 114310472B
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liquid
pipe
flow
switch
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CN114310472A (en
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王禹林
孙从文
潘一
徐国达
王杨敏
查文彬
张诗怡
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Nanjing University of Science and Technology
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Nanjing University of Science and Technology
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Abstract

The invention discloses an intelligent cooling and lubricating device and method applied to a numerical control machine tool. The device comprises a cooling and lubricating system, a state monitoring system, a sealing module and a convenient installation module. The cooling and lubricating system comprises a vortex cooling part, a gas-liquid mixing part, a flow regulator and an air inlet liquid switch; the state monitoring system comprises a display adjusting component, a temperature and flow sensor and an automatic control switch; the two input ends of the gas-liquid mixing part are respectively connected with the vortex cooling part and the flow regulator through the integrated machining cooling device and the lubricating device, and the machining area is cooled and lubricated by utilizing the vortex cooling and micro-lubrication principle; and the temperature and flow sensors installed inside are utilized to intelligently monitor the temperature and flow data, and the acquired temperature and flow data is displayed in real time through the display adjusting component. The invention has novel structure, simple operation, high integration level, convenient installation, energy conservation, environmental protection, high automation degree and high popularization value.

Description

Intelligent cooling and lubricating device and method applied to numerical control machine tool
Technical Field
The invention belongs to the field of machine tool machining, and particularly relates to an intelligent cooling and lubricating device and method applied to a numerical control machine tool.
Background
The numerical control machine tool is high-efficiency automatic machining equipment which consists of mechanical equipment and a numerical control system and is used for machining complex parts, and is an important component part of the manufacturing industry in China. In machining, it is often necessary to cool and lubricate the machining area in order to improve tool life and machining quality. At present, cooling and lubrication are mainly carried out through cutting fluid in actual production of factories, but a large amount of lubricating cutting fluid cannot fully exert the lubricating effect of the cutting fluid, the production cost is increased, serious pollution is caused to the geological environment of soil, and the volatilized oil mist of the lubricating cutting fluid also forms a great threat to the health of workers; the compressed air or the cooling compressed air is used alone for auxiliary processing, so that the cooling and lubricating effects are not obvious although the environment is protected and saved. In addition, the lack of quantitative monitoring means for cooling and lubricating media in actual processing often depends on the experience of workers to carry out fuzzy control or only carry out on/off binary control, which greatly influences the processing precision of manufactured parts, in particular to the surface metallographic structure change condition and surface mechanical properties such as surface hardness, residual stress and the like which are closely related to the cooling and lubricating media. Therefore, the industry needs to develop a novel cooling and lubricating device which is efficient and environment-friendly and can be used for quantitative monitoring.
The vortex effect means that when the air flow rotates at a high speed in the vortex tube, the air flow is separated into two parts of air flows with different temperatures through vortex transformation, the temperature of the air flow at the center part is lower than that of the air flow at the outer layer, and the low-temperature air flow can be obtained under the condition that no additional refrigeration equipment is used by separating the two parts of air flows, so that the vortex tube refrigeration method is applied to a plurality of technical fields worldwide. The micro lubrication technology (MQL) is to mix and evaporate compressed gas and micro lubricating oil to form micron-sized droplet oil mist, and then spray the droplet oil mist to a cutting area of a machine tool at a high speed through a nozzle for effective cooling and lubrication, and the minimum amount of cutting fluid is used for achieving the optimal cooling and lubrication working condition and cutting effect. By organically combining the vortex refrigeration effect and the micro-lubrication technology, the low-temperature compressed air subjected to vortex refrigeration and the atomized cutting fluid are mixed and then sprayed to the cutting area, so that the efficient and economical cooling and lubrication effect can be achieved, and the cooling and lubrication device is a new product capable of replacing the existing cooling and lubrication device on a large scale.
Chinese patent publication No. CN107524906B discloses a micro-lubrication device, which connects a liquid conduit and a gas conduit by using a modularized liquid flow regulator, and can jet continuous or discontinuous air or lubrication liquid jet according to the need, and the micro-lubrication device can sufficiently mix compressed air and lubrication liquid, but cannot further cool a cutting area through low temperature; the Chinese patent publication No. CN109731705A discloses a micro-lubrication device and a use method thereof, wherein an oil outlet is connected with a fluid control valve, the fluid control valve is connected with a gas flow valve, and mixed liquid is atomized through a nozzle and sprayed out; chinese patent publication No. CN108106038A discloses a countercurrent vortex tube type micro refrigerator, which uses the vortex refrigeration effect to realize gas refrigeration by a countercurrent vortex tube, but the airflow sprayed by the refrigeration end has only refrigeration effect, has single function, and has no improvement effect on the lubrication condition of the cutting area. In summary, the cooling and lubricating device in the current numerical control machine tool processing field has certain limitations, lacks intelligent monitoring equipment with matched design, is difficult to realize real-time quantitative monitoring of cooling and lubricating media in processing independently, and needs an intelligent cooling and lubricating device which can efficiently cool and lubricate, has low cost, is light and easy to install, and is energy-saving and environment-friendly.
Disclosure of Invention
The invention aims to provide a portable and efficient intelligent cooling and lubricating device and method for a numerical control machine tool, which can generate low-temperature compressed air and mix the air with atomized lubricating cutting fluid with controlled flow to form low-temperature lubricating aerosol so as to realize cooling and lubrication of a cutting machining area; meanwhile, the state of the cooling and lubricating medium needs to be monitored and displayed accurately in real time, and the cooling and lubricating medium has the advantages of low energy consumption, low cost, portability, easiness in installation, cleanness and environmental protection.
In order to achieve the above object, the technical scheme of the invention is as follows:
the intelligent cooling and lubricating device mainly comprises a cooling and lubricating system, a state monitoring system, a sealing module and a portable installation module; the cooling and lubricating system can generate uniformly mixed low-temperature lubricating aerosol based on the vortex cooling effect and the micro-lubrication principle, and cool and lubricate a processing area; the state monitoring system can realize intelligent real-time monitoring of liquid flow and gas temperature through various sensors and the like arranged in the equipment and synchronously display the liquid flow and the gas temperature through a display screen; the seal module and the portable mounting module are capable of integrating, sealing and fixedly mounting the device.
The cooling and lubricating system is a system which can carry out integrated design of gas cooling and liquid lubrication on a processing area and mainly comprises a vortex cooling part, an air inlet pipe, an air inlet switch, a liquid inlet pipe, a liquid inlet switch, a temperature regulator, a flow regulator, a liquid flow control pipe, a gas-liquid mixing part, a mixed medium output pipe and other parts and a plurality of connecting pieces thereof. Compressed air output from the compressor is cooled by the vortex cooling component, the lubrication cutting fluid output from the liquid pump is subjected to flow regulation by the flow regulator, and the cooled low-temperature compressed air and the flow-control lubrication cutting fluid are mixed in the gas-liquid mixing component to form a low-temperature lubrication aerosol output system.
The state monitoring system is a system capable of carrying out real-time, quantitative and intelligent monitoring and display on cooling and lubricating media and mainly comprises a display adjusting component, a temperature sensor, a flow sensor and a circuit control switch. The temperature of the low-temperature compressed air and the flow data of the lubricating cutting fluid are acquired through various sensors, transmitted to a display adjusting component, and displayed on a screen in real time after analog-to-digital conversion, encoding and decoding.
The sealing module and the portable installation module can carry out integrated sealing on functional components and carry out convenient installation on the whole device, and mainly comprise a device sealing shell and a magnetic attraction seat.
Further, the center of the vortex cooling part of the cooling and lubricating system is provided with a vortex cooling chamber, vortex generators are arranged in the cooling chamber, threaded holes are formed in the upper side, the front side and the rear side of the cooling chamber, the threaded holes in the upper side are connected with an air inlet pipe, and the threaded holes in the two sides are connected with a cold end pipe and a hot end pipe;
further, the air inlet switch and the liquid inlet switch of the cooling and lubricating system have the same structure and respectively comprise a corresponding switch valve body and a corresponding switch knob, and the valve body and the corresponding switch knob are connected through a buckle;
further, the liquid flow regulator of the cooling and lubricating system comprises a flow regulating valve and a flow regulating knob, and the valve body and the knob are fixed through a buckle;
further, the center of a gas-liquid mixing part of the cooling and lubricating system is a gas-liquid mixing cavity, the front and the upper part of the cavity are respectively provided with an air inlet end and a liquid inlet end which are orthogonally arranged, and the rear part of the cavity is provided with a threaded hole which is connected with a mixed medium output pipe; the transition area between the air inlet end and the gas-liquid mixing cavity is a nozzle with gradually reduced diameter, and the transition area between the liquid inlet end and the gas-liquid mixing cavity is an atomization nozzle.
Further, a display adjusting part of the state monitoring system is fixed on an end cover of a shell of the cooling and lubricating device through a threaded hole in a part shell by using a screw, a signal processor, a dry battery and a plurality of connecting wires are packaged in the part shell by using the screw, and a state display screen and an adjusting key are arranged on the front face of the part shell;
further, the two circuit control switches of the state monitoring system are totally identical in structure and are respectively positioned at the air inlet switch and the liquid inlet switch, the coaxial conducting rod is fixed inside the switch knob through threads, the conducting ring is fixed on the switch valve body, the conducting rod and the conducting ring are connected into the state monitoring system through wires, and the two circuit control switches are connected into the state monitoring system circuit in parallel.
Further, the sealing shell body and the shell end cover of the sealing module are integrally packaged in the cooling and lubricating system and the state monitoring system by using bolts, and the magnetic attraction seat of the convenient installation module is fixed at the rear of the shell body by threads and is adsorbed and installed at a proper position of a machine tool by magnetic materials.
As an optimal technical scheme, the length, width and height of the device are 200/100/65mm;
as the preferable technical proposal, the diameter of the main pipelines such as the air inlet pipe, the liquid inlet pipe and the like is 8mm, the connection mode between the pipelines of the device is internal and external threaded connection, gaskets are placed, and the wall thickness of the pipelines is 1mm;
as an optimal technical scheme, the air inlet switch and the liquid inlet switch select ball valves, the specification of the valve body is consistent with that of the corresponding pipeline, and the pressure of compressed air and lubrication cutting fluid respectively depend on a compressor and a liquid pump;
as the preferable technical scheme, the flow regulator selects a straight-through plunger valve, the specification of the valve body is matched with that of a corresponding pipeline, and the flow is 0-0.002L/min;
as a preferable embodiment, the vortex cooling member is made of an aluminum alloy material;
as an optimal technical scheme, the temperature regulator is made of cast iron materials, and the temperature regulation interval of low-temperature compressed air is-30 to-10 ℃;
as the preferable technical scheme, the temperature sensor is a thermal sleeve type bimetal thermometer, the length of a temperature measuring rod is 4-6 mm, the diameter of the temperature measuring rod is 2-4 mm, and the temperature measuring rod is eccentric by 2mm during installation to reduce air flow resistance;
as an optimized technical scheme, the flow sensor is an electromagnetic flowmeter, the specification of the flow sensor is consistent with that of a corresponding pipeline, and the flow sensor is connected by bolts;
as the preferable technical scheme, the signal processor of the display adjusting component adopts an STM32 singlechip;
as the preferable technical scheme, the length and the diameter of the coaxial conducting rod of the circuit control switch are matched with those of the air inlet and liquid inlet switch knob, the diameter of the conducting ring is smaller than 2mm of the switch knob, and the thickness is 2-4 mm;
as the preferable technical scheme, the device shell of the sealing module is made of plastic materials, and the wall thickness is 3mm;
compared with the prior art, the invention has the remarkable advantages that:
(1) Aiming at the application scene of numerical control machine tool processing, the invention completes the efficient cooling and lubrication of the cutting processing area through the cooling and lubrication system designed integrally based on the vortex cooling effect and the micro lubrication principle, the device can directly work by being connected with the output pipelines of the compressor and the liquid pump, and the whole process does not need to additionally arrange refrigeration equipment and a power source, thereby saving energy and protecting environment;
(2) The invention designs a state monitoring system based on a cooling and lubricating system, monitors the temperature of low-temperature compressed gas and the flow of lubricating cutting fluid by using various sensors, displays by using a display adjusting part, realizes the real-time quantitative monitoring of the state of a cooling and lubricating medium, and has higher intelligent level;
(3) According to the invention, the circuit control switch arranged at the air inlet and liquid inlet switch of the cooling and lubricating system is used for synchronously adjusting the opening and closing of the circuit control switch when the air inlet and liquid inlet switch knob is opened and closed, so that the automatic control of the working state of the state monitoring system is realized;
(4) Compared with the traditional equipment which needs to fix a tool, the invention has the advantages of small volume, light weight, easy installation and high integration level, can be adsorbed at different positions of a main shaft, a workbench clamp and the like of the numerical control machine tool by utilizing magnetic materials according to actual conditions, is convenient for flexible adjustment and disassembly, and has various application scenes.
Drawings
FIG. 1 is a schematic view showing the general structure of a cooling and lubricating device
FIG. 2 is a three-view showing the general structure of the cooling and lubricating device
FIG. 3 is an exploded view of the assembly of the cooling and lubrication device
FIG. 4 is a schematic diagram of a cooling and lubrication system
FIG. 5 is a schematic view showing the internal structure of the gas-liquid mixing member
FIG. 6 is a schematic diagram of a status monitoring system and a circuit control switch
FIG. 7 is a schematic structural view of a seal mounting system
FIG. 8 is a flow chart of the cooling and lubrication method
In the figure: 1-vortex cooling component, 2-intake pipe, 3-air inlet switch, 4-feed liquor pipe, 5-feed liquor switch, 6-temperature regulator, 7-flow regulator, 8-liquid accuse flow pipe, 9-gas-liquid mixing component, 10-mixed medium output pipe, 11-display adjusting component, 12-temperature sensor, 13-flow sensor, 14-circuit control switch, 15-device seal shell, 16-magnetism inhale the seat.
Detailed Description
The invention is further described with reference to the drawings and specific embodiments.
Fig. 1-7 show an intelligent cooling and lubricating device based on the eddy cooling effect and the micro lubrication principle, which is applied to a numerical control machine tool and comprises a cooling and lubricating system I, a state monitoring system II, a sealing module III and a convenient installation module IV. Wherein:
the cooling and lubricating system I comprises an eddy current cooling part 1, an air inlet pipe 2, an air inlet switch 3, a liquid inlet pipe 4, a liquid inlet switch 5, a temperature regulator 6, a flow regulator 7, a liquid flow control pipe 8, a gas-liquid mixing part 9 and a mixed medium output pipe 10;
the state monitoring system II comprises a display adjusting component 11, a temperature sensor 12, a flow sensor 13 and a circuit control switch 14;
the sealing module III mainly refers to the device sealing housing 15;
the convenient mounting module IV is mainly referred to as a magnetic attraction seat 16.
As a specific scheme, the center of the vortex cooling part 1 of the cooling and lubricating system I is provided with a vortex cooling chamber 1-1, and a threaded hole is formed above the cooling chamber and is connected with an air inlet pipe 2 for inputting compressed air; screw holes are respectively formed in the front side and the rear side and are connected with a cold end pipe 1-2 and a hot end pipe 1-3 with screw threads at the tail ends, and a vortex generator is arranged in the screw holes and is used for separating compressed air into cold air and hot air, and the cold air and the hot air are respectively output from the cold end pipe and the hot end pipe; the other side of the cold end pipe 1-2 is connected with the air inlet end 9-2 of the air-liquid mixing part 9 through threads so as to input cooling compressed air; the other side of the hot end pipe 1-3 is connected with a temperature regulator 6 through threads and is used for exhausting high-temperature gas.
The air inlet switch 3 and the liquid inlet switch 5 of the cooling and lubricating system I are identical in structure and are arranged in parallel, the air inlet switch 3 comprises an air inlet switch valve body 3-1 and an air inlet switch adjusting knob 3-2, and two sides of the air inlet switch 3 are respectively connected with a machine tool compressor and the air inlet pipe 2 through threads to control whether compressed gas enters the system I; the liquid inlet switch 5 comprises a liquid inlet switch valve body 5-1 and a liquid inlet switch adjusting knob 5-2, and two sides of the liquid inlet switch are respectively connected with a machine tool liquid pump and a flow regulator 7 through threads to control whether lubrication cutting liquid enters the system I; the two switch valve bodies are all ball valves, and the extended control rods are connected with the corresponding knobs through buckles.
The temperature regulator 6 of the cooling and lubricating system I changes the length of the hot end connected with the vortex generator through the rotation of the screw thread connected with the hot end pipe 1-3 of the vortex cooling part, thereby regulating the temperature of cooling compressed air.
The flow regulator 7 of the cooling and lubricating system I is opened at two sides of the flow regulating valve body 7-1 and is respectively connected with the liquid inlet switch valve body 5-1 and the liquid flow control pipe 8, the flow regulating valve body 7-1 uses a straight-through plunger valve with higher precision to control the flow of lubricating cutting fluid based on a pressure regulating valve principle, a control rod extending out of the valve body is connected with the flow regulating knob 7-2 through a buckle, and the height of the liquid control valve is changed through rotating the knob to control the flow of the lubricating cutting fluid flowing into the liquid flow control pipe 8.
The center of a gas-liquid mixing part 9 of the cooling and lubricating system I is provided with a gas-liquid mixing cavity 9-1, the front and the upper part of the cavity are respectively provided with an air inlet end 9-2 and a liquid inlet end 9-3 which are arranged in an orthogonal manner, and the air inlet end and the liquid inlet end are respectively connected with a cold end pipe 1-2 and a liquid flow control pipe 8 of the vortex cooling part, so that low-temperature compressed air and flow control lubricating cutting fluid are input into the cavity and uniformly and fully mixed; the transition area of the air inlet end 9-2 and the air-liquid mixing cavity 9-1 is a conical nozzle with gradually reduced diameter, and the transition area of the air inlet end 9-3 and the air-liquid mixing cavity 9-1 is provided with a liquid atomization nozzle 9-4 for atomizing cutting fluid; the low-temperature compressed air in the cavity and the atomized flow-control lubrication cutting fluid are mixed to form low-temperature lubrication aerosol, and the low-temperature lubrication aerosol is output to an external nozzle from a mixed medium output pipe 10 connected with the rear of the cavity through a threaded hole;
as a specific scheme, the display adjusting component 11 of the state monitoring system II has a signal processor 11-1 connected with a temperature sensor 12 and a flow sensor 13 through wires, is installed inside a component housing 11-4 through a buckle, and is powered by a dry battery 11-5 also fixed inside the housing; the state display screen 11-2 and the adjusting keys 11-3 are arranged on the front surface of the component shell 11-4, and the component shell 11-4 is arranged on the end cover 15-2 of the cooling and lubricating device shell through screws;
the thermal sleeve type bimetal temperature sensor 12 of the state monitoring system II is vertically inserted into the air inlet end 9-2 of the air-liquid mixing component 9 through a sealing rubber soft plug, the magnetorheological fluid type flow sensor 13 is connected to the air inlet end 9-3 of the air-liquid mixing component 9 through bolts, and the temperature sensor is connected with corresponding pins of the signal processor 11-1 through wires to monitor the temperature of compressed air and the flow of lubricating cutting fluid in real time.
The two circuit control switches 14 of the state monitoring system II are totally identical in structure and are respectively positioned at the air inlet switch 3 and the liquid inlet switch 5, and the coaxial conducting rod 14-1 is fixed inside a switch knob through threads and rotates coaxially with the knob; the conductive ring 14-2 is fixed on the switch valve body, a part of the ring is made of conductive material, the rest is made of insulating material, the coaxial conductive rod 14-1 contacts the conductive part of the conductive ring 14-2 when the switch is communicated, and contacts the non-conductive part of the ring 14-2 when the switch is disconnected; the conducting rod 14-1 and the conducting ring 14-2 are connected into a state monitoring system circuit through a conducting wire, two groups of control switches are connected into the circuit in parallel, the state monitoring system II is automatically controlled, and the system can be kept in a working state due to the fact that any switches are communicated.
In the sealing module III and the convenient installation module IV, the device sealing shell 15 comprises a sealing shell 15-1 and a sealing shell end cover 15-2 which are connected through bolt holes on the side surfaces of the shell, the functional parts are integrally packaged in the sealing shell, holes are formed in the upper part of the sealing shell 15-1 to enable the air inlet pipe 2 and the liquid inlet pipe 4 to pass through, and holes are formed in the front side and the rear side to enable the temperature regulator 6 and the mixed medium output pipe 10 to pass through; the magnetic attraction seat 16 is connected to the back of the sealed shell 15-1 through threads, and the bottom of the magnetic attraction seat is made of magnetic materials, so that the device can be conveniently installed at any position of a machine tool.
As shown in fig. 8, a flow chart of a cooling and lubricating method based on intelligent monitoring for cooling and lubricating devices is shown, and the cooling and lubricating method comprises the following main steps:
step one, gas-liquid input: the air inlet switch and the liquid inlet switch are opened to enable compressed air of the machine tool compressor and lubrication cutting liquid of the liquid pump to flow into an air inlet pipe and a liquid inlet pipe of the cooling and lubrication system respectively;
step two, cooling and controlling flow: compressed air of the air inlet pipe flows into the vortex cooling chamber, low-temperature compressed air is generated under the vortex refrigeration effect and is output through the cold end pipe, the temperature interval of the low-temperature air is between minus 30 ℃ and minus 10 ℃, and the low-temperature air is controlled by a temperature regulator arranged at the tail end of the hot end pipe; the lubrication cutting fluid flowing out of the fluid inlet pipe is output through the fluid flow control pipe after being regulated by the flow regulator;
step three, mixing gas and liquid: the lubrication cutting fluid of the liquid flow control pipe and the low-temperature compressed air of the cold end pipe are fully mixed in the gas-liquid mixing cavity to form low-temperature lubrication aerosol, and the low-temperature lubrication aerosol is output to an external nozzle through a mixed medium output pipe to cool and lubricate a cutting processing area; in particular, if only the intake switch is opened and the intake switch is closed, the cooling and lubrication system only inputs compressed air, and outputs cooling compressed air after vortex cooling, which functions as a vortex cooling pipe.
Step four, intelligent monitoring: the temperature of low-temperature compressed air and the flow of lubricating cutting fluid are monitored in real time by utilizing various sensors arranged in a cooling and lubricating system, the acquired data are displayed on a state display screen in real time after analog-to-digital conversion, encoding and decoding, and the starting and the closing of the state monitoring system are automatically controlled by a circuit control switch;
the embodiments described above are described in order to facilitate the understanding and appreciation of the invention by those skilled in the art, it will be readily apparent to those skilled in the art that various modifications may be made to the embodiments and that the general principles described herein may be applied to other embodiments without undue burden. Therefore, the present invention is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present invention.

Claims (4)

1. Be applied to intelligent cooling lubricating arrangement of digit control machine tool, a serial communication port, including cooling lubricating system (I), state monitoring system (II), sealing module (III) and convenient installation module (IV), wherein: the cooling and lubricating system (I) comprises an eddy current cooling part (1), an air inlet pipe (2), an air inlet switch (3), a liquid inlet pipe (4), a liquid inlet switch (5), a temperature regulator (6), a flow regulator (7), a liquid flow control pipe (8), a gas-liquid mixing part (9) and a mixed medium output pipe (10); the state monitoring system (II) comprises a display adjusting component (11), a temperature sensor (12), a flow sensor (13) and a circuit control switch (14); the center of a vortex cooling part (1) of the cooling and lubricating system (I) is provided with a vortex cooling chamber (1-1), a spiral vortex generator is arranged in the vortex cooling chamber (1-1), and exhaust threaded holes arranged on the front side and the rear side of the vortex cooling chamber (1-1) are respectively communicated with a cold end pipe (1-2) and a hot end pipe (1-3), wherein the aperture of the threaded hole connected with the cold end pipe (1-2) is relatively smaller; an air inlet threaded hole is arranged above the vortex cooling chamber (1-1) and is connected with an air inlet pipe (2);
the other side of the cold end pipe (1-2) of the vortex cooling component (1) of the cooling and lubricating system (I) is connected with a threaded hole of the air inlet end (9-2) of the air-liquid mixing component (9); the other side of the hot end pipe (1-3) is connected with a threaded hole of a temperature regulator (6); the center of the gas-liquid mixing component (9) is provided with a gas-liquid mixing cavity (9-1), the front of the cavity is provided with an air inlet end (9-2), the transition area between the air inlet end and the gas-liquid mixing cavity (9-1) is provided with a conical nozzle with gradually reduced diameter, and the other side of the air inlet end (9-2) is connected with a cold end pipe (1-2) of the vortex cooling component (1); a liquid inlet end (9-3) is arranged above the gas-liquid mixing cavity (9-1), a transition area of the liquid inlet end and the gas-liquid mixing cavity (9-1) is a liquid atomizing nozzle (9-4) which is arranged orthogonally to a conical nozzle of the gas inlet end (9-2), micron-sized fine holes are uniformly distributed at the bottom of the liquid atomizing nozzle (9-4), and the other side of the liquid inlet end (9-3) is connected with a liquid flow control pipe (8); the rear part of the gas-liquid mixing cavity (9-1) is connected with a mixed medium output pipe (10) through a threaded hole; the center of a display adjusting component (11) of the state monitoring system (II) is provided with a signal processor (11-1) which is arranged inside a component shell (11-4) through a buckle, and a temperature sensor (12) and a flow sensor (13) are connected with corresponding pins of the signal processor (11-1) through wires; the state display screen (11-2) and the adjusting keys (11-3) are arranged in an opening on the front surface of the component shell (11-4) and are connected with the signal processor (11-1) through wires; the display adjusting part (11) is powered by a dry battery (11-5) fixed in the shell and is arranged on the end cover (15-2) of the sealed shell through a screw; the temperature sensor (12) of the state monitoring system (II) is vertically inserted into the air inlet end (9-2) of the air-liquid mixing component (9) through a sealing rubber cork; the flow sensor (13) is connected with the liquid inlet end (9-3) of the gas-liquid mixing component (9) through a bolt and a gasket; the two circuit control switches (14) of the state monitoring system (II) are totally identical in structure and are respectively arranged at the corresponding positions of the air inlet switch (3) and the liquid inlet switch (5); the coaxial conducting rod (14-1) is arranged in the switch knob through threads and rotates coaxially with the knob, and the conducting ring (14-2) is fixed on the switch valve body; the coaxial conducting rod (14-1) and the conducting ring (14-2) are connected into a state monitoring system circuit through a conducting wire, and two groups of control switches are connected into the circuit in parallel; the sealing module (III) mainly refers to a device sealing shell (15), and the device sealing shell (15) integrally packages a cooling and lubricating system (I) and a state monitoring system (II) inside through 4 bolt holes on the sides of a sealing shell body (15-1) and a sealing shell body end cover (15-2); a through hole for the air inlet pipe (2) and the liquid inlet pipe (4) to pass through is arranged above the sealed shell (15-1), and through holes for the temperature regulator (6) and the mixed medium output pipe (10) to pass through are arranged on two sides;
the convenient installation module (IV) mainly refers to a magnetic attraction seat (16), the magnetic attraction seat (16) is installed on the back of the sealing shell (15-1) through threads, and the magnetic attraction material at the bottom is adsorbed at the installation position of the device; the air inlet switch (3) and the liquid inlet switch (5) of the cooling and lubricating system (I) have the same structure, and ball valves with the size specification matched with corresponding pipelines are selected;
the flow regulator (7) of the cooling and lubricating system (I) comprises a flow regulating valve body (7-1) and a flow regulating knob (7-2); the two sides of the flow regulating valve body (7-1) are provided with threaded holes which are respectively connected with the liquid inlet switch valve body (5-1) and the liquid flow control pipe (8), and the valve body is connected with the flow regulating knob (7-2) through a buckle; the flow regulating valve body (7-1) is a straight-through plunger valve which is consistent with the size specification of the liquid inlet pipe (4) and has higher precision.
2. The intelligent cooling and lubricating device for the numerical control machine tool according to claim 1, wherein the temperature sensor (12) of the state monitoring system (II) is a thermal sleeve type bimetallic temperature sensor, the external shape of the thermal sleeve type bimetallic temperature sensor is a slender rod shape, and the external shape of the thermal sleeve type bimetallic temperature sensor is used for measuring the temperatureThe insertion length of the rod is 4-6 mm, the diameter is 2-4 mm, and the temperature measuring range is
Figure QLYQS_1
The flow sensor (13) of the state monitoring system (II) is a magnetic fluid type electromagnetic flowmeter, the size specification of the flow sensor is matched with the liquid inlet end (9-3) of the gas-liquid mixing component (9), and the flow measurement range is 0-1L/min.
3. The intelligent cooling and lubricating device applied to the numerical control machine tool according to claim 2, wherein the length and the diameter of the coaxial conductive rod (14-1) of the circuit control switch (14) of the state monitoring system (II) are matched with the size of an air inlet liquid switch knob; the diameter of the conductive ring (14-2) is smaller than 2mm of the switch knob, and the thickness of the ring is 2-4 mm; a part of the coaxial conductive rod (14-1) and the conductive circular ring (14-2) are made of conductive copper materials, and the rest of the circular ring is made of insulating rubber materials; the coaxial conductive rod (14-1) contacts the conductive portion of the conductive ring (14-2) when the switch is on and contacts the insulating portion of the ring when the switch is off.
4. The method for using the intelligent cooling and lubricating device applied to the numerical control machine tool according to any one of claims 1 to 3, which is characterized by comprising the following four main steps:
step one, gas-liquid input: the air inlet switch and the liquid inlet switch are opened to enable compressed air of the compressor and lubrication cutting liquid of the liquid pump to flow into an air inlet pipe and a liquid inlet pipe of the cooling and lubrication system respectively;
step two, cooling and controlling flow: compressed air of the air inlet pipe flows into the vortex cooling chamber, low-temperature compressed air is generated under the vortex refrigeration effect and is output through the cold end pipe, and the temperature range of the low-temperature air is within
Figure QLYQS_2
Is controlled by a temperature regulator arranged at the tail end of the hot end pipe; flow regulation of lubricating cutting fluid flowing out of liquid inlet pipe through flow regulatorOutputting the controlled liquid through a liquid flow control pipe;
step three, mixing gas and liquid: the flow control lubrication cutting fluid of the liquid flow control pipe and the low-temperature compressed air of the cold end pipe are fully mixed in the gas-liquid mixing chamber to form low-temperature lubrication aerosol, and the low-temperature lubrication aerosol is output to an external nozzle through a mixed medium output pipe, so that cooling and lubrication are carried out on a cutting processing area; particularly, if only the air inlet switch is opened and the liquid inlet switch is closed, the cooling and lubricating system only inputs compressed air, and outputs cooling compressed air after vortex cooling, and the function is equivalent to that of a vortex cooling pipe;
step four, intelligent monitoring: the temperature of low-temperature compressed air and the flow of lubricating cutting fluid are monitored in real time by utilizing various sensors arranged in a cooling and lubricating system, the acquired data are displayed on a state display screen in real time after analog-digital conversion and encoding and decoding, and the starting and the closing of the state monitoring system are automatically controlled by a circuit control switch.
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