Lubricant charge atomization intelligent supply system

Abstract

The invention discloses a lubricant charge atomization intelligent supply system which comprises a jet flow nozzle pose adjusting device and a main machine base, the jet flow nozzle pose adjusting device comprises a jet flow nozzle, and the jet flow nozzle is connected with a pose adjusting mechanism; the jet nozzle is provided with a photoelectric sensor; a lubricant storage tank, a peristaltic pump, an oil-gas shunting device and a high-voltage static management and control center are arranged in the main engine base, the peristaltic pump is connected between the lubricant storage tank and the oil-gas shunting device, and the high-voltage static management and control center is connected with the high-voltage static conveyor; the jet nozzle is connected with the high-voltage electrostatic conveyor through a high-voltage line and connected with the oil-gas flow dividing device through a gas pipeline and a liquid pipeline. The space electric field stability and the charging effect can be improved, the electric disturbance effect of the lubricant is fully achieved, and the atomization effect of the lubricant is enhanced; static high pressure, air pressure and flow compensation output can be achieved, and therefore the stable and efficient cooling and lubricating effect is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of minimal lubrication, and in particular to a lubricant charged atomization intelligent supply system. Background Art

[0002] Minimum quantity lubrication, as a green and clean lubrication solution to replace pouring cooling, has been widely used in milling and turning of common materials. This process uses high-pressure gas to atomize extremely low doses of lubricant and spray it to the cutting point to achieve efficient heat transfer and lubrication. Electrostatic atomization minimum quantity lubrication introduces an electrostatic field on the basis of pneumatic atomization minimum quantity lubrication. The droplets are forced to be charged before and after atomization. The charged droplets enhance the controllability of transport under the traction of the electric field. In addition, the presence of free charges on the surface of the droplets enhances the transport capacity at the tool-workpiece interface in the cutting area, thereby improving its lubrication and cooling performance.

[0003] The existing integrated control micro-lubrication system mainly focuses on pneumatic atomization micro-lubrication. For example, Chinese patent CN109158946B provides a digital three-phase micro-lubrication system and a method for establishing a micro-lubrication cutting model. The digital three-phase micro-lubrication system mainly includes a control panel, a three-way valve, a variable diameter injection device, a box, an oil supply system, a water supply system and an air supply system. The micro-lubrication parameters (oil volume, water volume and air pressure) required for processing can be determined by the model; Chinese patent CN114683091B discloses an intelligent manufacturing system based on low-temperature micro-lubrication cutting. The low-temperature micro-lubrication device of the intelligent manufacturing system has a digital operation interface, which can manually and automatically adjust and control the low-temperature micro-lubrication parameters. Communication with the host computer can meet the requirements of real-time intelligent regulation of low-temperature micro-lubrication parameters. Chinese patent CN114012498B discloses a multi-energy field driven electrostatic atomization micro-lubricant transport device, the main body of which is composed of a micro-lubrication device, an auxiliary charging device, an electrostatic drive and control device, and the output control of air pressure, flow rate and high-voltage static electricity is realized by adopting a single-chip integrated control.

[0004] Chinese patent CN103612207B discloses a nanoparticle jet controllable transport micro-lubrication grinding equipment under a magnetically enhanced electric field, which includes an external high-voltage DC electrostatic generator and a nozzle of a magnetic field forming device, and aims to enhance the charging efficiency of droplets by disturbing the particles in the corona zone by the magnetic field, and to charge the cutting fluid by corona charging; Chinese patent CN109986403B discloses an electrostatic micro-lubrication gas-liquid electric convergence and transportation device, and its technical solution is that the infusion tube passes through the liquid inlet into the convergence plate, the transmission wire passes through the power inlet into the convergence plate, the air pipe delivers compressed air to the air inlet, and the charging device realizes contact charging of the liquid in the infusion tube through the conductive end of the transmission wire.

[0005] However, the above-mentioned minimal lubrication system still has the following problems:

[0006] 1. For the electrostatic nozzle structure, a single local corona charging or contact charging is mostly used, resulting in poor charging efficiency of atomized droplets; and a single structure cannot achieve charging mode conversion, resulting in poor compatibility of the electrostatic nozzle structure with multi-media high charging and high atomization performance; in addition, the above structures do not consider the insulation of electrostatic interfaces and other discharge-prone locations, resulting in a greater risk of leakage current and poor safety controllability;

[0007] 2. Existing minimal lubrication systems usually have a single structural design, which cannot achieve integrated control and output of multiple field parameters such as air pressure, flow, work station, static electricity, and wide temperature range, and cannot achieve individual control of multi-channel output work stations. Summary of the invention

[0008] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a lubricant charged atomization intelligent supply system, which can improve the spatial electric field stability and charging effect, fully realize the electric disturbance effect of the lubricant, enhance the atomization effect of the lubricant, increase the flux of charged particles reaching the workpiece / liquid film interface, and enhance the wetting performance of the tool-workpiece interface; it can realize compensatory output of electrostatic high voltage, air pressure, and flow, thereby ensuring stable and efficient cooling and lubrication effects.

[0009] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0010] An embodiment of the present invention provides a lubricant charged atomization intelligent supply system, comprising:

[0011] A jet nozzle posture adjustment device comprises a jet nozzle with a built-in electrode needle, wherein the jet nozzle is connected to a posture adjustment mechanism; and a photoelectric sensor is installed on the jet nozzle;

[0012] The main engine base is provided with a lubricant storage tank, a peristaltic pump, an oil-gas diversion device and a high-voltage electrostatic control center inside. The peristaltic pump is connected between the lubricant storage tank and the oil-gas diversion device. The high-voltage electrostatic control center is connected to a high-voltage electrostatic conveyor outside the main engine base. The high-voltage electrostatic conveyor is provided with a plurality of high-voltage line channels inside. Normally open solenoid valves are installed in the high-voltage line channels.

[0013] Among them, the jet nozzle is connected to the high-voltage electrostatic conveyor through a high-voltage line, and the jet nozzle is connected to the oil and gas diversion device through a gas pipeline and a liquid pipeline respectively; the photoelectric sensor is used to detect the arc brightness and close the normally open solenoid valve at the corresponding position when the arc brightness threshold is exceeded.

[0014] As a further implementation, a gas confluence channel and a liquid confluence channel are provided inside the jet nozzle, the liquid confluence channel is coaxially arranged with the electrode needle, the gas confluence channel is arranged outside the liquid confluence channel, and is connected with the liquid confluence channel at the nozzle outlet;

[0015] The lubricant contacts the electrode needle through the liquid confluence channel, and the high-pressure gas passes through the gas confluence channel and is mixed with the charged lubricant at the nozzle outlet to be atomized.

[0016] As a further implementation, the position of the electrode needle is adjustable to switch between contact charging and contact-corona combined charging modes.

[0017] As a further implementation, the gas converging channel includes an accelerating channel, the cross section of the accelerating channel is circular, the longitudinal cross section is a multi-segment structure, and gradually narrows from the channel inlet end to the jet nozzle outlet end.

[0018] As a further implementation method, the posture adjustment mechanism includes a posture adjustment module, a degree of freedom adjustment rod group and an electrostatic insulation sleeve, the jet nozzle is installed at one end of the electrostatic insulation sleeve, the other end of the electrostatic insulation sleeve is connected to the degree of freedom adjustment rod group, and the degree of freedom adjustment rod group is connected to the magnetic suction seat;

[0019] The freedom adjustment rod group is connected to the posture adjustment module, and the posture adjustment module drives the freedom adjustment rod group to change the posture of the jet nozzle.

[0020] As a further implementation method, the posture adjustment module is installed in the cylinder between the freedom adjustment rod group and the electrostatic insulation sleeve, and in the servo installed in the freedom adjustment rod group and at the connection between the freedom adjustment rod group and the magnetic suction seat;

[0021] Based on the jet postures of different working conditions, the optimal jet angle and target distance are obtained to adjust the angle of the jet nozzle through the servo and cylinder.

[0022] As a further implementation method, the intelligent supply system also includes a wide temperature range regulation module, which includes multiple temperature sensors. According to the gas temperatures in different pipelines obtained by the temperature sensors, the temperature loss is calculated to feed back the jet nozzle outlet temperature.

[0023] As a further implementation, the oil-gas flow splitting device is provided with a plurality of gas branching pipelines, and the gas branching pipelines are installed with normally closed solenoid valves;

[0024] A plurality of liquid branching pipelines are also arranged inside the oil and gas flow dividing device, and the liquid branching pipelines are connected with the liquid infusion pipe.

[0025] As a further implementation, the intelligent supply system further includes an air pressure regulating module and a flow regulating module. The air pressure regulating module is used to detect the air pressure of the gas branch pipeline, and the flow regulating module is used to detect the flow of the infusion tube.

[0026] As a further implementation method, the intelligent supply system also includes a safety detection unit, which includes an oil mist sensor, a temperature sensor, and a humidity sensor. The oil mist sensor is installed on the jet nozzle to monitor the environmental oil mist concentration; the temperature sensor and humidity sensor are used to monitor the environmental temperature and humidity.

[0027] As a further implementation method, the intelligent supply system also includes an intelligent operation and maintenance unit, which is used to establish a database according to operating condition parameters to obtain optimal atomization characteristic parameters.

[0028] The beneficial effects of the present invention are as follows:

[0029] (1) The lubricant charged atomization supply system of the present invention includes a main base, a lubricant storage box, a high-voltage electrostatic control center, an oil-gas diversion device, a control box, etc., which are reasonably distributed in the main base, with a compact structure and optimized space; and an air pressure regulating module, a flow regulating module, and a voltage regulating module are provided to realize compensatory output of electrostatic high voltage, air pressure, and flow, thereby ensuring stable and efficient provision of cooling and lubrication services in a complex and changeable working environment.

[0030] (2) The jet nozzle of the present invention is connected to a posture adjustment mechanism, which can adjust the posture of the jet nozzle as required; and the posture adjustment mechanism includes an electrostatic insulating sleeve, and the connection between the electrode needle and the high-voltage wire (electrostatic interface) is arranged inside the electrostatic insulating sleeve, which not only realizes a reliable connection, but also ensures the insulation shielding of the electrostatic interface to ensure safety.

[0031] (3) The jet nozzle of the present invention has a built-in electrode needle. The lubricant enters the jet nozzle from the liquid converging channel and contacts the electrode needle. By adjusting the position of the electrode needle inside the nozzle, the conversion between the contact charging mode and the contact-corona composite charging mode can be achieved, thereby achieving efficient charging that is suitable for lubricants of various physical properties; the gas converging channel has an acceleration channel section and is connected to the liquid converging channel at the nozzle outlet, which can fully realize the electric disturbance effect of the lubricant and enhance the atomization effect of the lubricant. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0033] FIG. 1( a ) is an axonometric view of a lubricant charged atomization supply system according to one or more embodiments of the present invention;

[0034] FIG1( b ) is a second isometric view of a lubricant charged atomization supply system according to one or more embodiments of the present invention;

[0035] FIG. 2( a ) is an isometric view of a mainframe according to one or more embodiments of the present invention;

[0036] FIG2( b ) is a side view of a main base according to one or more embodiments of the present invention;

[0037] FIG3( a) is an isometric view of a gas pipeline according to one or more embodiments of the present invention;

[0038] FIG3( b ) is a front view of a gas delivery pipe according to one or more embodiments of the present invention;

[0039] FIG4( a) is a cross-sectional view of an oil-gas flow dividing device according to one or more embodiments of the present invention;

[0040] FIG4( b) is a cross-sectional view of a high voltage electrostatic conveyor according to one or more embodiments of the present invention;

[0041] FIG5( a) is a side view of a jet nozzle device according to one or more embodiments of the present invention;

[0042] FIG5( b) is an isometric view of a jet nozzle device according to one or more embodiments of the present invention;

[0043] FIG5( c ) is a front view of a jet nozzle device according to one or more embodiments of the present invention;

[0044] Figure 6 is a schematic diagram of the internal structure of an electrostatic insulation sleeve according to one or more embodiments of the present invention;

[0045] FIG. 7( a) is an isometric view of a jet nozzle according to one or more embodiments of the present invention;

[0046] FIG7( b) is a cross-sectional view of a jet nozzle according to one or more embodiments of the present invention;

[0047] FIG. 7( c ) is a schematic diagram of key dimensions of a jet nozzle according to one or more embodiments of the present invention;

[0048] FIG7( d ) is a schematic diagram of a jet nozzle according to one or more embodiments of the present invention;

[0049] Figure 8 is a wide temperature range high pressure gas transmission pipeline diagram according to one or more embodiments of the present invention;

[0050] Fig. 9 is a high voltage electrostatic transmission circuit diagram according to one or more embodiments of the present invention;

[0051] Fig.10 is a control principle diagram of the present invention according to one or more embodiments;

[0052] FIG. 11( a ) is a schematic diagram of a high pressure gas control system according to one or more embodiments of the present invention;

[0053] FIG. 11( b ) is a schematic diagram of a wide temperature range gas output control system according to one or more embodiments of the present invention;

[0054] FIG. 11( c ) is a schematic diagram of lubricant flow control according to one or more embodiments of the present invention;

[0055] Fig.12 is a schematic diagram of high voltage electrostatic transmission according to one or more embodiments of the present invention;

[0056] Fig.13 is a schematic diagram of a posture adjustment module according to one or more embodiments of the present invention;

[0057] Fig.14 is a schematic diagram of a safety monitoring principle according to one or more embodiments of the present invention;

[0058] Fig.15 It is a schematic diagram of the intelligent operation and maintenance control principle according to one or more embodiments of the present invention.

[0059] Among them, I, main engine base, II, high-voltage electrostatic conveyor, III, control box, IV, high-voltage electrostatic control center, V, lubricant storage box, VI, peristaltic pump, VII, gas pipe, VIII, liquid pipe, IX, gas filter, X, oil filter device, XI, oil and gas diversion device, XII, engine base door;

[0060] I-1, main control screen, I-2, working status indicator light, I-3, emergency stop button, I-4, switch, I-5, high-voltage electrostatic switch, I-6, housing, I-7, line transmission pipeline, I-8, air pipe reserved interface, I-9, air pipe connection port, I-10, liquid pipe connection port, I-11, power cord port;

[0061] II-1, normally open solenoid valve, II-2, high-pressure line channel, II-3, high-pressure interface;

[0062] VII-1, air pressure control port, VII-2, first temperature sensor monitoring port, VII-3, second temperature sensor monitoring port, VII-4, third temperature sensor monitoring port;

[0063] XI-1, normally closed solenoid valve, XI-2, gas branch pipeline, XI-3, liquid branch pipeline, XI-4, high-pressure gas interface;

[0064] XIII-1, magnetic seat, XIII-2, first degree of freedom adjustment rod, XIII-3, second degree of freedom adjustment rod, XIII-4, electrostatic insulation sleeve, XIII-5, jet nozzle, XIII-6, air pipe interface, XIII-7, cylinder, XIII-8, second steering gear, XIII-9, first steering gear, XIII-10, connector, XIII-11, liquid pipe interface, XIII-12, oil mist sensor, XIII-13, photoelectric sensor, XIII-14, wire transmission pipeline;

[0065] XIII-5-1, liquid confluence channel, XIII-5-2, gas confluence channel, XIII-5-3, electrode needle, XIII-5-4, reserved channel. DETAILED DESCRIPTION

[0066] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0067] Embodiment 1:

[0068] This embodiment provides a lubricant charged atomization intelligent supply system, which mainly includes a jet nozzle posture adjustment device, a mainframe I, a wide temperature range adjustment module, an air pressure adjustment module, a flow adjustment module, a voltage adjustment module, a safety detection unit and an intelligent operation and maintenance unit to realize the intelligent supply of lubricants. The mainframe I is provided with a lubricant storage box V, a peristaltic pump VI, a high-voltage electrostatic control center IV, a control box III, and an oil-gas diversion device XI, and the outside of the mainframe I is provided with a high-voltage electrostatic conveyor II, an oil filter device X and a gas filter IX.

[0069] The following is a detailed description of the lubricant charged atomization intelligent supply system in conjunction with the accompanying drawings:

[0070] The jet nozzle posture adjustment device can adjust the position and angle of the nozzle in real time according to the feed speed and processing position of the plate; Figure 5(a)-Figure 5(c) As shown, the jet nozzle posture adjustment device includes a jet nozzle XIII-5 and a posture adjustment mechanism, and the jet nozzle XIII-5 is installed at the end of the posture adjustment mechanism; the posture adjustment mechanism includes a magnetic seat XIII-1, an electrostatic insulating sleeve XIII-4, a degree of freedom adjustment rod group and a posture adjustment module, the degree of freedom adjustment rod group is connected to the posture adjustment module, and the posture adjustment module drives the degree of freedom adjustment rod group to change the jet nozzle posture.

[0071] In this embodiment, the degree of freedom adjustment rod group includes a first degree of freedom adjustment rod XIII-2 and a second degree of freedom adjustment rod XIII-3, and the posture adjustment module includes a cylinder XIII-7, a first servo XIII-9 and a second servo XIII-8; one end of the first degree of freedom adjustment rod XIII-2 is hinged to the magnetic seat XIII-1, and the other end is hinged to one end of the second degree of freedom adjustment rod XIII-3, the other end of the second degree of freedom adjustment rod XIII-3 is fixedly connected to the cylinder XIII-7, the cylinder rod of the cylinder XIII-7 is fixedly connected to one end of the electrostatic insulation sleeve XIII-4 through the connecting piece XIII-10, and the jet nozzle XIII-5 is installed at the other end of the electrostatic insulation sleeve XIII-4. The first servo XIII-9 is installed at the connection between the magnetic seat XIII-1 and the first degree of freedom adjustment rod XIII-2, and the second servo XIII-8 is installed at the connection between the first degree of freedom adjustment rod XIII-2 and the second degree of freedom adjustment rod XIII-3. The magnetic seat XIII-1 is used to fix to the machine tool, and can adjust the jet target point with two degrees of freedom. By calculating the jet posture under different working conditions, the optimal jet angle and target distance can be obtained. The nozzle can be adjusted by adjusting the first servo XIII-9, the second servo XIII-8 and the cylinder XIII-7.

[0072] It should be noted that each operating condition has a different empirical optimal jet posture. The posture is input into the supply system in advance and adjusted to the position based on the microcontroller control before processing. The specific means are existing technologies and will not be repeated here.

[0073] The jet nozzle XIII-5 is connected to the gas pipeline through the gas pipe interface XIII-6, and the jet nozzle XIII-5 is connected to the liquid pipeline through the liquid pipe interface XIII-8. The gas pipeline and the liquid pipeline are connected to the oil-gas diversion device XI. As shown in Figures 5(b) and 5(c), the gas pipe interface XIII-6 is provided on one side of the jet nozzle XIII-5, and the liquid pipe interface XIII-8 is provided on the other side of the jet nozzle XIII-5.

[0074] The jet nozzle XIII-5 is also equipped with a photoelectric sensor XIII-13 and an oil mist sensor XIII-12. The photoelectric sensor XIII-13 and the oil mist sensor XIII-12 are included in the safety detection unit. The oil mist sensor XIII-12 is used to monitor the oil mist concentration in the environment. If the oil mist concentration is ≥5mg / m3, the alarm is activated and the oil mist suction device is turned on. The brightness threshold of the discharge arc is set as the photosensitivity point of the photoelectric sensor XIII-13. If the photoelectric sensor XIII-13 senses the brightness signal and the arc discharge time t≥1s, an alarm is issued. If the continuous prompt time exceeds 3 seconds, it is fed back to the single-chip microcomputer to control the normally open solenoid valve II-1 in the high-voltage electrostatic conveyor II to automatically cut off the electrostatic interface of the workstation. In order to ensure the safety of the system, Fig.14 As shown, the safety detection unit also includes a grounding sensor and an environment monitoring module, wherein the environment monitoring module includes a temperature sensor and a humidity sensor, the grounding sensor is used to detect whether the device is grounded, and the temperature sensor and the humidity sensor are used to monitor the ambient temperature and humidity respectively.

[0075] like Figure 6 As shown, a wire conveying conduit XIII-14 is provided inside the electrostatic insulating sleeve XIII-4, and the wire conveying conduit XIII-14 is arranged along the axis direction of the electrostatic insulating sleeve XIII-4. The high-voltage wire is arranged in the wire conveying conduit XIII-14 and fixed to the threaded hole on the rear side of the wire conveying conduit XIII-14 through a wire fixer. The contact position between the second degree of freedom adjustment rod XIII-3 and the electrostatic insulating sleeve XIII-4 has a transition space, so that it can bear the sinking force of the high-voltage wire and maintain the connection stability.

[0076] like Figure 7(a)-Figure 7(d) As shown, a reserved channel XIII-5-4, a liquid confluence channel XIII-5-1, a gas confluence channel XIII-5-2 and an electrode needle XIII-5-3 are provided inside the jet nozzle XIII-5. The reserved channel XIII-5-4 is arranged at the center of the jet nozzle XIII-5 and is coaxially arranged with the jet nozzle XIII-5; the inlet of the liquid confluence channel XIII-5-1 is arranged on one side of the reserved channel XIII-5-4 and is connected to the liquid pipe interface XIII-8; the inlet of the gas confluence channel XIII-5-2 is arranged on the other side of the reserved channel XIII-5-4 and is connected to the air pipe interface XIII-6; the electrode needle XIII-5-3 is inserted into the reserved channel XIII-5-4, and the electrode needle XIII-5-3 is connected to the high-voltage wire (for example, by soldering), and the connection between the electrode needle XIII-5-3 and the high-voltage wire (electrostatic interface) is arranged inside the electrostatic insulating sleeve XIII-4, which not only realizes a reliable connection but also ensures the insulation shielding of the electrostatic interface.

[0077] The liquid confluence channel XIII-5-1 is connected with the reserved channel XIII-5-4, so that the lubricant enters the jet nozzle XIII-5 from the liquid confluence channel XIII-5-1 and contacts the electrode needle XIII-5-3; the channel body of the liquid confluence channel XIII-5-1 (outside the side entrance) is coaxially arranged with the reserved channel XIII-5-4, and the diameter is larger than the diameter of the reserved channel XIII-5-4. The channel body of the liquid confluence channel XIII-5-1 is the charged channel, and its end is a conical structure, that is, the guide groove of the conical section.

[0078] The high-pressure gas enters the jet nozzle XIII-5 through the gas converging channel XIII-5-2, and is mixed with the charged lubricant and atomized at the outlet of the jet nozzle XIII-5. The gas converging channel XIII-5-2 has an acceleration channel, such as Figure 7(b)-Figure 7(d) As shown, the gas converging channel XIII-5-2 includes an acceleration channel and a channel inlet. The cross section of the acceleration channel is a circular ring, and the longitudinal cross section is a multi-segment structure, and gradually narrows from the channel inlet end to the outlet end of the jet nozzle XIII-5; the acceleration channel is connected to the liquid converging channel XIII-5-1 at the outlet position of the jet nozzle XIII-5; by setting the acceleration channel, the effect of step-by-step speed increase is achieved. Specifically, the longitudinal impact force of the jet at the outlet can be enhanced. In addition, there is no charge loss before the charged lubricant is atomized. After atomization, it enters the cutting point through the space jet, and the space charge loss is small. Therefore, the charged structure scheme has obvious advantages in charge loss. From the perspective of charging efficiency, the straight-line distance between the outer wall of the electrode needle XIII-5-3 and the outside of the lubricant is small, the volume resistance is reduced, and the lubricant has the physical conditions for full charging; the electrode needle XIII-5-3 is short from the nozzle outlet, and can re-divide the longitudinal traction charged droplet group before the jet reaches the target target, reducing the probability of droplet dispersion.

[0079] As shown in Figure 7(c), the key dimensions of the jet nozzle XIII-5 include the radial distance b between the electrode wall (outer wall of the electrode needle XIII-5-3) and the outer wall of the lubricant (outer wall of the charging channel), the distance c between the end of the electrode needle XIII-5-3 and the nozzle outlet, and the length d of the guide groove at the end of the liquid converging channel XIII-5-1; among them, b≤1mm can meet the low conductivity and high charging effect, c≥0 and d≤2mm can avoid the interference of air flow disturbance on the oil volume, 0≤e≤2mm can improve its electric disturbance effect and charging effect, and (-d+1)≤e≤-dmm can couple corona and contact charging to improve the charging effect. .

[0080] In the jet nozzle XIII-5 structure of this embodiment, if e≥0, the charging mode is contact charging; if (-d+1)≤e≤-dmm, the charging mode is contact-corona composite charging. First, the cooling lubricant contacts the electrode needle XIII-5-3 through the liquid confluence channel XIII-5-1. Due to the small space, the low conductivity lubricant can still achieve a strong charging effect; and because the electrode needle XIII-5-3 is inside the lubricant, its critical voltage for electrical breakdown is greatly improved, which improves the spatial electric field stability and charging effect. When the electrode needle XIII-5-3 is in the air flow channel, a strong corona field will be generated locally, so this structure can also achieve corona charging. The distance between the top of the electrode needle XIII-5-3 and the nozzle outlet is small, which can fully realize the electric disturbance effect of the lubricant and enhance the atomization effect of the lubricant. Therefore, the arrangement of the built-in electrode needle XIII-5-3 and the gas-liquid confluence structure of the jet nozzle XIII-5 of this embodiment can enhance the jet stability and charging efficiency of lubricants with various physical properties; and a posture adjustment mechanism is configured, combined with the electrostatic insulation sleeve XIII-4 and the structure of the integrated jet nozzle, to enhance high-voltage safety.

[0081] In this embodiment, the interior of the main engine base I is mainly divided into an upper area and a lower area. The lubricant storage box V and the high-voltage electrostatic control center IV are arranged in the lower area, the peristaltic pump VI and the oil-gas diversion device XI are arranged in the upper area, and the control box III is arranged on the upper side of the high-voltage electrostatic control center IV, forming a compact arrangement inside the main engine base I, which can shorten the length of the pipeline layout and optimize the internal structure of the main engine base I.

[0082] The high-voltage static electricity control center IV is used to generate high-voltage static electricity. The peristaltic pump VI is connected to the lubricant storage tank V through a detachable oil pipe to extract lubricant. During use, the lubricant can be added outside the main base I through the oil filter device X. The lubricant storage tank V contains a liquid level prompt sensor. The output side of the peristaltic pump VI is installed with an infusion tube VIII. There are multiple infusion tubes VIII, one end of which is detachably connected to the peristaltic pump VI and the other end is connected to the oil-gas diversion device XI. The main base I is provided with a gas pipe VII, one end of which is connected to the gas filter IX and the other end is connected to the oil-gas diversion device XI; the external high-pressure gas enters the oil-gas diversion device XI through the gas filter IX and the gas pipe VII.

[0083] Specifically, as shown in FIG4(a), the oil and gas diversion device XI is provided with a high-pressure gas interface XI-4, which is connected to the gas diversion pipeline XI-2 inside the oil and gas diversion device XI. There are multiple gas diversion pipelines XI-2, which are parallel to each other; each gas diversion pipeline XI-2 is respectively installed with a normally closed solenoid valve XI-1, and the gas diversion pipeline XI-2 is connected to the gas delivery pipe VII. After the high-pressure gas enters the gas diversion pipeline XI-2, it is controlled to close by the normally closed solenoid valve XI-1. When the normally closed solenoid valve XI-1 is energized, the gas diversion pipeline XI-2 of the corresponding station is opened, and the station outputs high-pressure gas. There are also multiple liquid diversion pipelines XI-3 inside the oil and gas diversion device XI, and the liquid diversion pipeline XI-3 is connected to the liquid delivery pipe VIII. The flow rate of each liquid diversion pipeline XI-3 is controlled by the peristaltic pump VI.

[0084] As shown in Figure 4(b) and Fig. 9 As shown, the high-voltage electrostatic conveyor II is located outside the main base I as an independent unit and is responsible for the multi-channel output of static electricity. The high-voltage electrostatic conveyor II is provided with a high-voltage interface II-3. There are multiple high-voltage line channels II-2 distributed inside the high-voltage electrostatic conveyor II. The high-voltage line channel II-2 is installed with a normally open solenoid valve II-1. The high-voltage interface II-3 is connected to the electrostatic interface of the high-voltage electrostatic control center IV, and is transmitted to each high-voltage line channel II-2 through a parallel channel. Each high-voltage line channel II-2 is controlled by a normally open solenoid valve II-1. When the normally open solenoid valve II-1 is energized, voltage is applied to the workstation. In order to ensure static safety, the high-voltage electrostatic conveyor II is made of insulating resin / Teflon.

[0085] Three interfaces are set at the output end of the high-voltage electrostatic conveyor II, corresponding to the gas branch channel XI-2, liquid branch channel XI-3 and high-voltage wire interface of the oil and gas diversion device XI respectively. The three interfaces are arranged in the total output port of a workstation to facilitate the fixation of the external three-way channel.

[0086] As shown in Figure 2(a) and Figure 2(b), the main base I includes a housing I-6, a main control screen I-1, a working status indicator light I-2, an emergency stop button I-3, a switch I-4, a high-voltage electrostatic switch I-5, a line transmission pipeline I-7, a gas pipe reserved interface I-8, a gas pipe connection port I-9, a liquid pipe connection port I-10, and a power cord port I-11; the main control screen I-1 is a human-machine interaction interface, which can be used to adjust the field parameters of different workstations and display the sensor signals of each sensor unit. The working status indicator light I-2 includes three signals: equipment on, off, and high-voltage output indication. The switch I-4 is the main switch of the equipment. The emergency stop button I-3 is used to control the emergency stop of the entire equipment. A separate high-voltage electrostatic switch I-5 is set for starting the high-voltage electrostatic control center IV. A line transmission pipeline I-7 is provided inside the housing I-6 for wired connection between each drive unit and the control box III.

[0087] As shown in Fig. 3(a) and Fig. 3(b), an air pressure control port VII-1 and a plurality of temperature sensing monitoring ports are arranged along the axial direction of the gas transmission pipe VII. In this embodiment, three temperature sensing monitoring ports are arranged, namely, a first temperature sensing monitoring port VII-2, a second temperature sensing monitoring port VII-3 and a third temperature sensing monitoring port VII-4. Different units are arranged at each node inside the gas transmission pipe VII. A stepper motor drive module and a pressure regulating module are arranged inside the air pressure control port VII. The inlet pressure is controlled by the command issued by the control box III. Each temperature sensing monitoring port VII-2 is provided with a temperature sensor for monitoring the temperature loss of the low-temperature gas and predicting the nozzle outlet gas temperature.

[0088] like Fig.10 As shown, a single-chip microcomputer is used to control and regulate the flow, air pressure, voltage, and output position. As shown in Figure 11(a), the air pressure regulation module includes a solenoid valve, a stepper motor, a pressure regulating valve, etc. The single-chip microcomputer controls the stepper motor and the solenoid valve to adjust the air pressure. The air supply pipe VII is connected to the solenoid valve of each branch, and the solenoid valve is connected to the pressure regulating valve. The pressure regulating valve is adjusted by the stepper motor to control the air pressure. As shown in Figure 11(b), the flow regulation module includes a peristaltic pump VI and a flow sensor. The flow output is controlled by controlling the peristaltic pump VI, and the feedback flow is monitored by the flow sensor.

[0089] like Fig.12 As shown, the voltage regulation module includes a high-frequency resonant drive circuit, a high-voltage boost circuit and a voltage doubler rectifier circuit. After the high-frequency signal is generated, it is boosted by a transformer, and then a high-voltage output of 3 to 60 kV is generated by the voltage doubler rectifier circuit; the voltage regulation module has a built-in microcircuit acquisition module, which monitors the rectified current and voltage and calculates its operating power, and collects the resonant circuit current and transformer secondary voltage signals in real time at high speed. It should be noted that the voltage regulation module is implemented using existing technology, and its specific circuit structure will not be described in detail.

[0090] Further, such as Figure 8 As shown in Figure 11(c), the wide temperature range regulation module includes multiple temperature sensors, which collect the gas temperature at different temperature sensing monitoring ports, calculate the temperature loss, and thus feedback the nozzle outlet temperature. The nozzle outlet temperature is calculated by the following formula:

[0091] T out =T0·e -kd ;

[0092] In the above formula, T0 represents the initial temperature of the compressed gas, T out represents the gas temperature at the nozzle outlet, k represents the attenuation exponent, and d represents the pipeline length.

[0093] like Fig.15 As shown, the intelligent operation and maintenance unit is responsible for monitoring the overall operating conditions of each unit equipment (multiple supply systems and their processing units), and can connect to the host equipment in the equipment application conditions to better serve the processing quality. The remote operation center is set up to input the working condition parameters (including cutting fluid parameters, processing conditions, cutting amount, tool characteristics, etc.), and calculate and match the parameters of the optimal atomization characteristics based on the established database and model. The specific implementation process is as follows:

[0094] According to the processing conditions, cutting parameters, and tool characteristics, the optimal average particle size of the atomized droplets, the optimal jet temperature, the optimal charge of the droplet group, and the optimal jet posture are matched. According to the above optimal droplet characteristics combined with cutting fluid parameters such as cutting fluid dynamic viscosity, surface tension coefficient, conductivity, and relative dielectric constant, the optimal atomization performance parameters real-time field parameter gas-liquid ratio is matched. According to the cutting fluid conductivity and relative dielectric constant, the optimal electrostatic voltage is matched. According to the processing conditions and cutting parameters, the optimal air pressure and oil volume parameters are matched. After the optimal field parameters are obtained, the host equipment is mobilized to perform the four functions The adjustment module is used for adjustment; an environmental monitoring module is set up to visualize the operating environment of the host device in real time by connecting to the various sensor units at the host device; the actual cutting force and cutting temperature of the machining process are obtained by jointly applying the sensor equipment of the host unit, and the tool wear and machining efficiency are predicted, which are then fed back to the operation center to monitor the cooling and lubrication service quality of various parameters of the host device in real time; the carbon emissions of each unit in the application process are monitored by collecting the power consumption of each drive unit and calculating the material removal rate; the operation and maintenance efficiency of the equipment is improved by real-time monitoring of the operation status of each device.

[0095] This embodiment can monitor and adjust key parameters such as air pressure, temperature, flow rate and voltage of each workstation in real time, and ensure the best cooling and lubrication effect under different working conditions by establishing an overall intelligent operation and maintenance plan. This embodiment monitors various field parameters and environmental factors through a wide temperature range adjustment module, an environmental monitoring module, and a safety monitoring unit, and realizes real-time communication between the off-site operation terminal and the host parameters through a wireless communication module. The working condition data can be edited at the off-site operation terminal, which is convenient for establishing a database of optimal micro-lubrication field parameters under various working conditions.

[0096] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A lubricant charged atomization intelligent supply system, characterized in that: include: A jet nozzle posture adjustment device comprises a jet nozzle with a built-in electrode needle, wherein the jet nozzle is connected to a posture adjustment mechanism; and a photoelectric sensor is installed on the jet nozzle; The main engine base is provided with a lubricant storage tank, a peristaltic pump, an oil-gas diversion device and a high-voltage electrostatic control center inside. The peristaltic pump is connected between the lubricant storage tank and the oil-gas diversion device. The high-voltage electrostatic control center is connected to a high-voltage electrostatic conveyor outside the main engine base. The high-voltage electrostatic conveyor is provided with a plurality of high-voltage line channels inside. Normally open solenoid valves are installed in the high-voltage line channels. Among them, the jet nozzle is connected to the high-voltage electrostatic conveyor through a high-voltage line, and the jet nozzle is connected to the oil and gas diversion device through a gas pipeline and a liquid pipeline respectively; the photoelectric sensor is used to detect the arc brightness and close the normally open solenoid valve at the corresponding position when the arc brightness threshold is exceeded.

2. The lubricant charged atomization intelligent supply system according to claim 1, characterized in that: The jet nozzle is provided with a gas converging channel and a liquid converging channel inside, the liquid converging channel is coaxially arranged with the electrode needle, the gas converging channel is arranged outside the liquid converging channel and is connected with the liquid converging channel at the nozzle outlet; The lubricant contacts the electrode needle through the liquid confluence channel, and the high-pressure gas passes through the gas confluence channel and is mixed with the charged lubricant at the nozzle outlet to be atomized.

3. The lubricant charged atomization intelligent supply system according to claim 2, characterized in that: The gas converging channel comprises an accelerating channel, the cross section of the accelerating channel is annular, the longitudinal cross section is a multi-section structure, and gradually narrows from the channel inlet end to the jet nozzle outlet end.

4. The lubricant charged atomization intelligent supply system according to claim 1, characterized in that: The posture adjustment mechanism comprises a posture adjustment module, a degree of freedom adjustment rod group and an electrostatic insulation sleeve, the jet nozzle is installed at one end of the electrostatic insulation sleeve, the other end of the electrostatic insulation sleeve is connected to the degree of freedom adjustment rod group, and the degree of freedom adjustment rod group is connected to the magnetic suction seat; The freedom adjustment rod group is connected to the posture adjustment module, and the posture adjustment module drives the freedom adjustment rod group to change the posture of the jet nozzle.

5. The lubricant charged atomization intelligent supply system according to claim 4, characterized in that: The posture adjustment module is installed in the cylinder between the degree of freedom adjustment rod group and the electrostatic insulation sleeve, and in the servo installed in the degree of freedom adjustment rod group and at the connection between the degree of freedom adjustment rod group and the magnetic suction seat; Based on the jet postures of different working conditions, the optimal jet angle and target distance are obtained to adjust the angle of the jet nozzle through the servo and cylinder.

6. The lubricant charged atomization intelligent supply system according to claim 1, characterized in that: The intelligent supply system also includes a wide temperature range regulation module, which includes multiple temperature sensors. According to the gas temperatures in different pipelines obtained by the temperature sensors, the temperature loss is calculated to feed back the jet nozzle outlet temperature.

7. The lubricant charged atomization intelligent supply system according to claim 1, characterized in that: The oil-gas flow dividing device is provided with a plurality of gas branching pipelines inside, and the gas branching pipelines are installed with normally closed solenoid valves; A plurality of liquid branching pipelines are also arranged inside the oil and gas flow dividing device, and the liquid branching pipelines are connected with the liquid infusion pipe.

8. The lubricant charged atomization intelligent supply system according to claim 7, characterized in that: The intelligent supply system also includes an air pressure regulating module and a flow regulating module. The air pressure regulating module is used to detect the air pressure of the gas branch pipeline, and the flow regulating module is used to detect the flow of the infusion tube.

9. The lubricant charged atomization intelligent supply system according to claim 1, characterized in that: The intelligent supply system also includes a safety detection unit, which includes an oil mist sensor, a temperature sensor, and a humidity sensor. The oil mist sensor is installed on the jet nozzle to monitor the environmental oil mist concentration; the temperature sensor and humidity sensor are used to monitor the environmental temperature and humidity.

10. A lubricant charged atomization intelligent supply system according to claim 1 or 9, characterized in that: The intelligent supply system also includes an intelligent operation and maintenance unit, which is used to establish a database according to operating condition parameters to obtain optimal atomization characteristic parameters.

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