Numerical control optical machine lubrication system

Abstract

The application discloses a numerical control light machine lubricating system, comprising an oil supply pump, the oil supply pump is connected with X, Y, Z axis guide rail surface through lubricating pipeline, for injecting lubricating oil into each guide rail surface slider and ball screw, to realize the lubrication of the slider and the ball screw. The multiple temperature probes in the temperature control system and the multiple viscometers arranged near the guide rail surface can monitor the temperature and viscosity of the lubricant inside the guide rail surface. After the monitoring data is transmitted to the electric control system, the electric control system processes the data and controls the flow adjustment of the oil supply pump and the throttle distributor, realizes the oil quantity adjustment of each slider and ball screw, ensures that each slider and ball screw guide rail surface has good lubrication effect, and provides a basis for realizing accurate regulation and control of three axis guide rail surfaces.

Description

Technical Field

[0001] This invention relates to the technical field of mechanical lubrication, and more particularly to a CNC optical-mechanical lubrication system. Background Technology

[0002] Lubrication is an essential step for every machine tool to improve the smoothness of the movement of various components and reduce wear between components. In existing multi-axis machine tools, in order to ensure that each motion axis can be precisely controlled, it is necessary to add lubricating oil to each motion axis separately, thus forming different lubricating oil supply systems. For example, CN114310472A discloses an intelligent cooling and lubrication device and method for CNC machine tools. By integrating a machining cooling device and a lubrication device, the two input ends of the gas-liquid mixing component are connected to the eddy current cooling component and the flow regulator, respectively. The machining area is cooled and lubricated using the principles of eddy current cooling and micro-lubrication. The internally installed temperature and flow sensors intelligently monitor the temperature and flow data and display the collected temperature and flow data in real time through the display and adjustment component. However, this patent can only display the temperature in real time. When the temperature changes, the viscosity of the lubricating oil also changes. When the viscosity of the lubricating oil changes, it will cause the lubricating oil to lose its original lubricating effect. The above patent cannot solve the above problem. Therefore, there is an urgent need for a CNC optical-mechanical lubrication system. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a CNC optical-mechanical lubrication system.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: it includes an oil supply pump, which is connected to the X, Y, and Z axis guide rail surfaces through lubrication pipelines, and is used to inject lubricating oil into the slider and ball screw of each guide rail surface to achieve lubrication of the slider and the ball screw.

[0005] As a further description of the above technical solution, the lubrication pipeline includes a first lubrication pipeline, a second lubrication pipeline, and a third lubrication pipeline, which are connected by a main oil pipeline through which the oil supply pump pumps oil into the three lubrication pipelines.

[0006] As a further description of the above technical solution, the first lubrication pipeline, the second lubrication pipeline, and the third lubrication pipeline all include an oil inlet pipeline. The oil outlet end of the oil inlet pipeline is connected to a throttling distributor. The throttling distributor is connected to multiple oil distribution pipelines. The other end of each oil distribution pipeline is connected to multiple ball screws.

[0007] As a further description of the above technical solution, both the throttling distributor and the oil supply pump are equipped with filters for filtering the lubricating oil.

[0008] As a further description of the above technical solution, a temperature control system is also included. The temperature control system includes multiple temperature probes, which are located at the slider and the ball screw to monitor the temperature of the lubricating oil inside both. The temperature control system is electrically connected to an external electronic control system.

[0009] As a further description of the above technical solution, the electrical control system is a PLC control system. The electrical control system is electrically connected to the oil supply pump and the throttling distributor. In the working state, the temperature probe transmits the monitored temperature to the electrical control system. The electrical control system controls the flow coefficient of the throttling distributor to adjust the pressure of the lubricating oil between the slider and the ball screw.

[0010] As a further description of the above technical solution, the X-axis guide surface is the guide surface between the base and the saddle, the Y-axis guide surface is the guide surface between the saddle and the worktable, and the Z-axis guide surface is the guide surface between the spindle box and the column.

[0011] As a further description of the above technical solution, a viscometer is provided around each of the sliders and the ball screw, and the viscometer is electrically connected to the electronic control system.

[0012] As a further description of the above technical solution, the surfaces of the first lubrication pipeline, the second lubrication pipeline, the third lubrication pipeline, the main oil pipeline, the oil inlet pipeline, and the oil distribution pipeline are all coated with an oil-resistant and anti-corrosion coating. The raw materials of the oil-resistant and anti-corrosion coating, by weight, include at least: 50-100 parts resin, 20-30 parts filler, 1-5 parts film-forming aid, 1-9 parts lubricant, 0.3-2 parts defoamer, and 20-60 parts solvent.

[0013] As a further description of the above technical solution, the resin is selected from one or more of PVC resin, epoxy resin, acrylic resin, PI resin, and alkyd resin.

[0014] As a further description of the above technical solution, the resin is PVC resin, epoxy resin and alkyd resin, with a mass ratio of (30-50):(10-30):(10-20).

[0015] As a further description of the above technical solution, the mass ratio of the PVC resin, epoxy resin and alkyd resin is 49:23:12.

[0016] As a further description of the above technical solution, the PVC resin is chlorinated polyvinyl chloride resin, such as Lubrizol resin, brand name 88099.

[0017] As a further description of the above technical solution, the alkyd resin is a short-oil alkyd resin.

[0018] As a further description of the above technical solution, the filler is selected from one or more of aluminum sulfate, nano silica particles, mica powder, organobentonite, calcium carbonate, nano zinc oxide, kaolin, calcium carbonate, and light calcium powder.

[0019] As a further description of the above technical solution, the filler is nano-silica particles and calcium carbonate in a mass ratio of 1:(3-9).

[0020] As a further description of the above technical solution, the nano-silica particles are hydrophilic fumed nano-silica, such as those purchased from Hubei Huifu Nanomaterials Co., Ltd., model HL-300.

[0021] As a further description of the above technical solution, the calcium carbonate is active calcium carbonate with an average particle size of 10-30 μm, such as calcium carbonate purchased from Guangxi Xin Calcium Mining Co., Ltd., with a product specification of 800 mesh.

[0022] Lubricating oil has a complex composition, therefore, it is necessary to apply an oil-resistant coating to the pipeline, especially considering the damaging effects of water-containing oil on pipelines. Water-containing oil not only accelerates oil oxidation and gelation, but also freezes at low temperatures, clogging pipelines. When in contact with metal parts at temperatures above 100°C, it forms vapor, destroying the oil film. Therefore, the coating must have good water and oil resistance. The applicant found that coatings formed using PVC resin, epoxy resin, and alkyd resin exhibit good oil resistance to metal pipelines, especially with the addition of a small amount of alkyd resin, resulting in a flexible, strong coating with high adhesion to the pipeline. However, alkyd resin itself has poor water resistance and is not alkali-resistant. Adding... The mass ratio of nano-silica particles to calcium carbonate is 1:(3-9), which ensures that the coating has good oil and water resistance and reduces the sagging of lubricating oil in the pipeline. The applicant believes that the possible reason is that the average molecular weight of PVC resin is much larger than that of epoxy resin and alkyd resin. Under the action of fillers with different particle sizes, epoxy resin and alkyd resin are evenly distributed in the gaps between the molecular chains of PVC resin. The filler has a large specific surface area, especially the adsorption effect of nano-silica particles, which reduces the surface tension of the paint film, improves water resistance, and reduces sagging. When the paint film is damaged by oil and water, the filler will also preferentially adsorb, protecting the resin performance.

[0023] As a further description of the above technical solution, the film-forming aid is selected from one or more of ethylene glycol butyl ether, diethylene glycol butyl ether, benzyl alcohol, 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate and 2,2,4-trimethyl-1,3-pentanediol diisobutyrate.

[0024] As a further description of the above technical solution, the film-forming aid is ethylene glycol butyl ether.

[0025] As a further description of the above technical solution, the lubricant is selected from one or more of silicone oil, white oil, magnesium stearate, and calcium stearate.

[0026] As a further description of the above technical solution, the lubricant is calcium stearate.

[0027] As a further description of the above technical solution, the defoamer is an AC defoamer.

[0028] As a further description of the above technical solution, the solvent includes, but is not limited to, one or more of methylcyclohexane, butyl acetate, methyl ethyl ketone, ethyl acetate, n-propyl acetate, butyl acetate, n-butyl acetate, and toluene.

[0029] As a further description of the above technical solution, the oil-resistant and anti-corrosion coating of the present invention is prepared by the following method:

[0030] (1) Weigh each raw material according to the proportions and set aside;

[0031] (2) Epoxy resin and alkyd resin are added to solvent for pre-grinding;

[0032] (3) After mixing the above pre-ground materials, add chlorinated polyethylene resin, filler, defoamer, lubricant and film-forming aid in sequence, and grind until the fineness is 10-40μm to obtain the product.

[0033] The present invention has the following beneficial effects:

[0034] 1. This invention uses multiple temperature probes in the temperature control system and multiple viscometers placed near the guide rail surface to monitor the temperature and viscosity of the lubricant inside the guide rail surface. After the monitoring data is transmitted to the electronic control system, the electronic control system processes the data and controls the flow regulation of the oil supply pump and the throttling distributor to adjust the oil quantity of each slider and ball screw, thereby ensuring that the guide rail surface of each slider and ball screw has a good lubrication effect, thus providing a basis for precise control of the guide rail surfaces of the three axes.

[0035] 2. The use of PVC resin, epoxy resin, and alkyd resin, along with the addition of nano-silica particles and calcium carbonate as fillers, ensures that the coating has good water and oil resistance and reduces the dripping of lubricating oil in the pipeline. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the CNC optical-mechanical lubrication system proposed in this invention.

[0037] Legend:

[0038] 1. Oil supply pump; 201. Slider; 202. Ball screw; 3. First lubrication line; 4. Second lubrication line; 5. Third lubrication line; 6. Main oil line; 7. Oil inlet line; 8. Throttling distributor; 9. Oil distribution line; 10. Temperature probe; 11. Viscometer; 12. Electrical control system. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Example 1

[0041] Reference Figure 1This invention provides an embodiment of a CNC optical machine lubrication system, comprising an oil supply pump 1. The oil supply pump 1 is connected to the X, Y, and Z axis guide rails via lubrication pipelines. The X-axis guide rail is the guide rail surface between the base and the saddle; the Y-axis guide rail is the guide rail surface between the saddle and the worktable; and the Z-axis guide rail is the guide rail surface between the spindle box and the vertical spindle. All of the aforementioned guide rails are slide rails composed of sliders 201. A ball screw 202 is provided in the middle of the slide rail. The rotation of the ball screw 202 allows the saddle to slide on the base, the worktable to slide on the saddle, and the spindle box to slide on the vertical spindle. The oil supply pump 1 injects lubricating oil into the sliders 201 and the ball screw 202, thereby ensuring the smooth operation of the sliders 201 and the ball screw. The lubrication of the lead screw 202 provides excellent lubrication for the guide surfaces of each axis, laying the foundation for precise control of each axis surface. Specifically, the X-axis guide surface is connected to the oil supply pump 1 through the first lubrication pipe 3, the Y-axis guide surface is connected to the oil supply pump 1 through the second lubrication pipe 4, and the Z-axis guide surface is connected to the oil supply pump 1 through the third lubrication pipe 5. Each lubrication pipe includes an oil inlet pipe 7, and the oil outlet section of the oil inlet pipe 7 is connected to a flow distributor 8. The flow distributor 8 can set the flow rate. Then, the lubricating oil is pumped into the oil distribution pipe 9, and then into the slider 201 and the ball screw 202, thereby achieving precise control of the amount of oil pumped into different sliders 201 and ball screws 202.

[0042] In other feasible embodiments, filters are provided at the outlets of both the throttling distributor 8 and the oil supply pump 1. The filters can filter the lubricating oil flowing through both, thereby ensuring the lubrication quality and unobstructed flow of each lubrication point (i.e., the position where the oil distribution line 9 enters into different sliders 201 and ball screws 202), thus achieving a long lubrication life for the entire lubrication system.

[0043] The entire lubrication system also includes a temperature control system, which includes multiple temperature probes 10. These probes 10 are located at the slider 201 and the ball screw 202 to monitor the temperature of the lubricating oil inside both components. The temperature control system is electrically connected to an external electrical control system, which is a PLC control system. This electrical control system is electrically connected to the oil supply pump 1 and the throttling distributor 8. During operation, the temperature probes 10 transmit the monitored temperature to the electrical control system, which then controls the flow. The flow coefficient of the throttling distributor 8 is used to adjust the pressure of the lubricating oil in the slider 201 and the ball screw 202. A viscometer 11 is provided around each slider 201 and ball screw 202, and the viscometer 11 is also electrically connected to the electronic control system. When the viscometer 11 detects a change in the viscosity of the lubricating oil around the slider 201 and the ball screw 202, the viscometer 11 transmits the relevant data to the electronic control system. Then, the electronic control system controls the oil supply pump 1 to adjust the oil supply to ensure that the lubrication effect is always at its best.

[0044] The surfaces of the first lubrication pipeline, the second lubrication pipeline, the third lubrication pipeline, the main oil pipeline, the oil inlet pipeline, and the oil distribution pipeline are all coated with an oil-resistant and anti-corrosion coating. The raw materials of the oil-resistant and anti-corrosion coating, by weight, are: 84 parts resin, 25 parts filler, 3 parts film-forming aid, 4 parts lubricant, 0.8 parts defoamer, and 37 parts solvent.

[0045] The resin is PVC resin, epoxy resin, and alkyd resin. The mass ratio is 49:23:12.

[0046] The PVC resin is chlorinated polyvinyl chloride resin, purchased from Lubrizol, USA, brand name 88099.

[0047] The epoxy resin was purchased from Xuzhou Yihuiyang New Material Co., Ltd., model 901.

[0048] The alkyd resin is a short-oil alkyd resin, purchased from Changzhou Sisai New Material Technology Co., Ltd., model 637B.

[0049] The filler is composed of nano-silica particles and calcium carbonate in a mass ratio of 1:4.

[0050] The nano-silica particles are hydrophilic fumed nano-silica, purchased from Hubei Huifu Nanomaterials Co., Ltd., model HL-300.

[0051] The calcium carbonate in question is active calcium carbonate, purchased from Guangxi Xin Calcium Mining Co., Ltd., with a product specification of 800 mesh.

[0052] The film-forming aid is ethylene glycol butyl ether.

[0053] The lubricant is calcium stearate.

[0054] The defoamer is AC defoamer, CAS number: 9003-13-8.

[0055] The solvent is n-butyl acetate.

[0056] The oil-resistant and anti-corrosion coating is prepared by the following method:

[0057] (1) Weigh each raw material according to the proportions and set aside;

[0058] (2) Epoxy resin and alkyd resin are added to solvent for pre-grinding;

[0059] (3) After mixing the above pre-ground materials, add chlorinated polyethylene resin, filler, defoamer, lubricant and film-forming aid in sequence, and grind until the fineness is 20μm to obtain the product.

[0060] Example 2

[0061] The specific implementation method of this embodiment is the same as that of Embodiment 1, except that the resin used is PVC resin, epoxy resin, and alkyd resin in a mass ratio of 55:29.

[0062] Example 3

[0063] The specific implementation method of this embodiment is the same as that of Embodiment 1, except that the nano-silica particles are hydrophobic fumed nano-silica, purchased from Hubei Huifu Nanomaterials Co., Ltd., model number HB-620.

[0064] Performance testing

[0065] 1. Salt water resistance test: According to GB / T1763-1979, the salt water is a 3wt% sodium chloride solution. Evaluation criteria: A: No bubbling or peeling after 10 days; B: Bubbling and peeling after 10 days.

[0066] 2. Heat resistance performance: Tested according to Q / Ez159-2003, the temperature is raised to 60℃ and held for 5 minutes. If the paint film is intact, it is considered qualified; if the paint film is damaged, it is considered unqualified.

[0067] 3. Oil resistance: According to HG 2-1611-1985, when immersed in lubricating oil at a temperature of 25℃, the evaluation criteria are: A: No bubbling or peeling after 10 days, and cannot be wiped off with gauze; B: Bubbling and peeling after 10 days, and can be wiped off with gauze.

[0068] Example 1 Example 2 Example 3 Salt water resistant A B B Heat resistant qualified qualified qualified Oil resistant A B B

Claims

1. A CNC optical-mechanical lubrication system, characterized in that: The system includes an oil supply pump connected to the X, Y, and Z axis guide surfaces via lubrication lines. This pump injects lubricating oil into the sliders and ball screws on each guide surface to lubricate them. The lubrication lines include a first, second, and third lubrication line, connected by a main oil line through which the oil supply pump pumps oil. Each of the first, second, and third lubrication lines includes an inlet line, the outlet of which is connected to a throttling distributor. This distributor is connected to multiple branch lines, the other end of which is connected to multiple components of the sliders and ball screws. The system also includes... A temperature control system includes multiple temperature probes located at the slider and the ball screw to monitor the temperature of the lubricating oil inside both components. The temperature control system is electrically connected to an external electrical control system, which is a PLC control system. This electrical control system is electrically connected to the oil supply pump and the flow distributor. During operation, the temperature probes transmit the monitored temperature to the electrical control system, which controls the flow coefficient of the flow distributor to adjust the pressure of the lubricating oil in the slider and the ball screw. A viscometer is located around each slider and the ball screw, and the viscometer is electrically connected to the electrical control system. The surfaces of the first lubrication pipeline, the second lubrication pipeline, the third lubrication pipeline, the main oil pipeline, the oil inlet pipeline, and the oil distribution pipeline are all coated with an oil-resistant and anti-corrosion coating. The raw materials of the oil-resistant and anti-corrosion coating, by weight, include at least: 50-100 parts resin, 20-30 parts filler, 1-5 parts film-forming aid, 1-9 parts lubricant, 0.3-2 parts defoamer, and 20-60 parts solvent. The resin is PVC resin, epoxy resin and alkyd resin, with a mass ratio of (30-50):(10-30):(10-20); the filler is nano-silica particles and calcium carbonate, with a mass ratio of 1:(3-9), the nano-silica particles are hydrophilic fumed nano-silica, model HL-300; the calcium carbonate is active calcium carbonate, with an average particle size of 10-30μm.

2. The CNC optical-mechanical lubrication system according to claim 1, characterized in that: Both the throttling distributor and the oil supply pump are equipped with filters for filtering the lubricating oil.

3. The CNC optical-mechanical lubrication system according to claim 1, characterized in that: The X-axis guide surface is the guide surface between the base and the saddle, the Y-axis guide surface is the guide surface between the saddle and the worktable, and the Z-axis guide surface is the guide surface between the spindle box and the column.

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