Minimum quantity lubrication supply system and machining device

Abstract

The utility model discloses a minimal quantity lubrication supply system and a machining device. The minimal quantity lubrication supply system comprises a control unit, an air source unit, an air source pressurizing unit, a minimal quantity lubrication oil mist supply unit and a liquid supplementing unit. The air source unit is respectively connected with the air source pressurizing unit and the trace lubricating oil mist supply unit, the air source pressurizing unit is connected with the trace lubricating oil mist supply unit, the trace lubricating oil mist supply unit is provided with a plurality of groups of trace lubricating oil mist supply modules which are connected in parallel, and each trace lubricating oil mist supply module is provided with an oil storage atomizing cylinder; the liquid supplementing unit comprises a plurality of first oil supplementing branches which correspond to the trace lubricating oil mist supply modules in number and are connected in parallel, and each first oil supplementing branch is connected with each oil storage atomization cylinder; the control unit is configured to control the air source unit to work, the air source pressurizing unit to work, the trace lubricating oil mist supply module to generate and output oil mist, and the liquid supplementing unit to work. According to the technical scheme provided by the utility model, the oil supply accuracy is improved on the basis of saving oil consumption.

Description

TECHNICAL FIELD

[0001] The utility model relates to micro -lubrication processing technical field especially, relates to a kind of micro -lubrication supply system and processing device. BACKGROUND

[0002] In the manufacturing industry of vehicles and other equipment, machining processes such as cutting may exist. In the cutting machining process, the cutting heat needs to be dispersed, especially in deep hole machining process, because the space of deep hole machining is closed, the cutting heat generated by machining is large, and the cutting fluid needs to be output to the cutting area by the cooling and lubricating system to realize the functions of chip removal, cooling and lubricating the tool.

[0003] Currently, the machining process uses traditional cutting fluid machining. That is, the spindle of the tool has a central water outlet inner hole, and the inner hole outputs the cutting fluid (such as lubricating oil) of the inner cooling channel. This method has problems such as high oil consumption, workshop odor, space pollution and environmental pollution. SUMMARY

[0004] The utility model embodiment provides a kind of micro -lubrication supply system and processing device to improve oil supply precision on the basis of saving oil consumption.

[0005] In a first aspect, the utility model embodiment provides a kind of micro -lubrication supply system, comprising: control unit and respectively with the control unit connection gas source unit, gas source pressurizing unit, micro -lubrication oil mist supply unit and liquid supplement unit;

[0006] The gas source unit is connected with the gas source pressurizing unit and the micro -lubrication oil mist supply unit, the gas source pressurizing unit is connected with the micro -lubrication oil mist supply unit, the micro -lubrication oil mist supply unit is equipped with multiple groups of parallelly connected micro -lubrication oil mist supply module, each micro -lubrication oil mist supply module is equipped with oil storage atomization cylinder;

[0007] The liquid supplement unit includes multiple first oil supplement branches corresponding to the number of micro -lubrication oil mist supply modules and connected in parallel, and each first oil supplement branch is connected with each oil storage atomization cylinder.

[0008] The control unit is configured to control the operation of the gas source unit, the operation of the gas source pressurizing unit, the generation of oil mist by the micro -lubrication oil mist supply module and the output, and the operation of the liquid supplement unit.

[0009] Optionally, the liquid supplement unit includes an oil supplement combination, a booster pump and a liquid supplement tank arranged on the oil supplement combination.

[0010] The supplement liquid tank is connected with the booster pump, and a filter is arranged between the supplement liquid tank and the booster pump; the booster pump is connected with the gas source unit; the supplement oil combination is connected with each first supplement oil branch.

[0011] Optionally, a second electromagnetic valve and a one-way valve are arranged on the first supplement oil branch; the one-way valve is arranged between the second electromagnetic valve and the oil storage atomization cylinder.

[0012] Optionally, the supplement liquid unit further comprises a third pressure regulating valve, an oil atomizer and a fifth electromagnetic valve; the gas source unit comprises a first gas conveying channel and a second gas conveying channel connected with the oil storage atomization cylinder;

[0013] The second gas conveying channel comprises a first gas conveying branch and a second gas conveying branch; the first gas conveying branch is connected with the booster valve of the gas source booster unit; the second gas conveying branch is connected with the booster pump, and along the direction from the gas source unit to the booster pump, the second gas conveying branch is sequentially provided with the third pressure regulating valve, the oil atomizer and the fifth electromagnetic valve;

[0014] The oil atomizer pre-stores lubricating oil.

[0015] Optionally, the first gas conveying channel comprises a plurality of parallel third gas conveying branches;

[0016] Each third gas conveying branch is connected with each oil storage atomization cylinder one by one; a fourth electromagnetic valve is arranged on the third gas conveying branch; a second pressure regulating valve is arranged between the fourth electromagnetic valve and the oil storage atomization cylinder; a one-way valve is arranged between the second pressure regulating valve and the oil storage atomization cylinder;

[0017] The first gas conveying channel is provided with a pressure detection module.

[0018] Optionally, it further comprises an external atomization module; the external atomization module is connected with the micro-lubricating oil mist supply module one by one; a pneumatic ball valve is arranged between the external atomization module and the micro-lubricating oil mist supply module;

[0019] The external atomization module is used for outputting the oil mist output by the corresponding micro-lubricating oil mist supply module to the corresponding main shaft.

[0020] Optionally, the supplement liquid unit further comprises a second supplement oil branch;

[0021] The second supplement oil branch connects each external atomization module in series; the second supplement oil branch is connected with the booster pump.

[0022] Optionally, the micro-lubricating oil mist supply module comprises a plurality of parallel first output channels, a third electromagnetic valve and a plurality of first electromagnetic valves, and the oil storage atomization cylinder is provided with an atomization module.

[0023] The first output channel connects the gas source pressurizing unit and the oil storage atomization cylinder, the third electromagnetic valve is arranged on any one of the first output channels, the first electromagnetic valve is arranged on the remaining first output channels, and a first pressure regulating valve is arranged between the third electromagnetic valve and the oil storage atomization cylinder.

[0024] In a second aspect, the utility model embodiment further provides a processing device, including spindle and the utility model any embodiment provides trace lubrication supply system, each trace lubricating oil mist supply module is connected with a spindle.

[0025] Optionally, further comprising the cutter installed on the spindle, the pressure range of any one of the oil storage atomization cylinders is 0.3-1.0MPa, wherein 0.3-0.65MPa is applied to the cutter with the total area of internal cooling hole of 2.2-5mm 2 , and the minimum diameter of single hole is 1mm, and the maximum diameter is 4mm; 0.65-1.0MPa is applied to the cutter with the total area of internal cooling hole of 1.0-2.2mm 2 , and the minimum diameter of single hole is 0.5mm, and the maximum diameter is 2mm.

[0026] In the utility model, trace lubrication supply system includes gas source pressurizing unit, trace lubricating oil mist supply unit and liquid supplement unit. Gas source pressurizing unit can pressurize initial gas and store in gas storage tank, form first gas, trace lubricating oil mist supply unit includes multiple trace lubricating oil mist supply modules, each trace lubricating oil mist supply module is connected with one spindle, then each trace lubricating oil mist supply module can provide oil mist for the internal cooling channel of one cutting tool, liquid supplement unit transmits lubricating oil to the cutting fluid area of oil storage atomization cylinder, avoids the condition that oil mist generation amount is little or oil mist cannot be generated due to too low oil amount, atomization module mixes first gas and lubricating oil, forms oil mist output to the atomization area of oil storage atomization cylinder, and the atomization area outputs oil mist to the corresponding spindle. In the embodiment, multiple spindle oil mist amount supply of the same set of trace lubrication system is supplied, and each trace lubricating oil mist supply module can be controlled and adjusted individually according to the machining demand corresponding to different spindles, so that the oil mist amount output to the spindle is controlled individually, different types of machining demand are met, and automatic liquid supplement is realized through liquid supplement unit, and stable oil mist supply in the machining process is guaranteed.

[0027] Further, when the inner cooling channel of the cutting tool is large, the spindle air intake is increased, and the oil mist amount of the spindle is further increased to meet the demand of the large aperture tool oil mist amount; when the inner cooling channel of the cutting tool is small, the differential pressure for realizing atomization in the corresponding micro-lubrication oil mist supply module is increased alone, so that the oil mist can be smoothly discharged from the inner cooling channel of the tool, lubrication and cooling in the machining process are realized, and the use amount of cutting fluid in the machining process is reduced compared with the traditional machining mode. Therefore, the embodiment can provide different oil mist amounts according to different diameters of the inner cooling channel of the cutting tool, save the consumption amount of lubricating oil, and effectively avoid environmental pollution problems. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 A structure schematic view of a micro-lubrication supply system provided by the embodiment of the utility model;

[0029] Figure 2 A structure schematic view of an oil storage atomization cylinder provided by the embodiment of the utility model;

[0030] Figure 3 A structure schematic view of another micro-lubrication supply system provided by the embodiment of the utility model;

[0031] Figure 4 A structure schematic view of another micro-lubrication supply system provided by the embodiment of the utility model;

[0032] Figure 5 A structure schematic view of a machining device provided by the embodiment of the utility model. DETAILED DESCRIPTION

[0033] The utility model will be further described in detail in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not to limit the utility model. In addition, it should be noted that, in order to facilitate the description, only the parts related to the utility model are shown in the drawings, not all structures.

[0034] Figure 1The structure diagram of the minimal quantity lubrication supply system provided by the embodiment of the utility model, it needs to be noticed that the utility model does not provide lubricating oil to the lubricating system directly, but the mixture of minimal quantity lubricating oil and compressed air is passed into the inner cooling hole of the cutting tool, in other words, minimal quantity lubrication (Minimal Quantity Lubrication, MQL). This is a lubricating mode of metal processing, namely semi-dry cutting, which means that after the compressed gas (air, nitrogen, carbon dioxide, etc.) is mixed and vaporized with minimal quantity lubricating oil, micron-sized droplets are formed and sprayed to the processing area for effective lubrication. This scheme sprays MQL through the main shaft (containing the inner cooling channel) to the cutting area through the inner cooling hole of the tool, and at the same time, the chips are taken out from the chip removal groove of the tool, which not only solves the cooling and lubrication and chip removal, but also saves lubricating oil. However, the diameters of the inner cooling holes of tools of different diameters are different, and the cooling and lubrication and chip removal effects of the minimal quantity lubricating oil mist sprayed from the inner cooling holes of different sizes under the same pressure state are quite different, and it is difficult to guarantee consistent effects. The minimal quantity lubricating oil mist supply unit 12 of the minimal quantity lubrication supply system of the embodiment includes a plurality of minimal quantity lubricating oil mist supply modules 121, each of which provides oil mist to one main shaft 15, and the pressure of the oil mist provided by each minimal quantity lubricating oil mist supply module 121 can be adjusted separately in the embodiment, so as to adapt to tools of different diameters, provide appropriate oil quantity for the cutting process, avoid waste of lubricating oil, and avoid pollution to the environment. In addition, the embodiment can also provide minimal quantity lubrication function to tools connected to multiple main shafts at the same time, thereby improving the existing work efficiency. In particular, the multi-main-shaft processing technology can be applied to the automobile manufacturing industry, because it processes large parts such as automobile chassis, in order to improve the processing efficiency, two or more main shafts can be accommodated in the machine tool. Optionally, the embodiment can be applied to the CNC process machining technology of the integrated aluminum die casting rear floor and front engine compartment of a new energy automobile. Optionally, the utility model takes two minimal quantity lubricating oil mist supply modules 121 as an example for illustration, and it is conceivable that the minimal quantity lubrication supply system of the utility model can also include three or more minimal quantity lubricating oil mist supply modules 121, and the embodiment does not specially limit this.

[0035] Specifically, Figure 2 The structure diagram of the oil storage atomization cylinder provided by the embodiment of the utility model, refer to Figure 1 And Figure 2 The embodiment of the utility model provides a kind of minimal quantity lubrication supply system, including: control unit ( Figure 1 And Figure 2 Not shown in) and gas source unit 14, gas source pressurizing unit 11, minimal quantity lubricating oil mist supply unit 12 and liquid supplement unit 13 connected with control unit respectively;

[0036] The gas source unit 14 is connected with the gas source pressurizing unit 11 and the trace lubricating oil mist supply unit 12 respectively, the gas source pressurizing unit 11 is connected with the trace lubricating oil mist supply unit 12, the trace lubricating oil mist supply unit 12 is provided with a plurality of groups of trace lubricating oil mist supply modules 121 connected in parallel, each trace lubricating oil mist supply module 121 is provided with an oil storage atomizing cylinder 21;

[0037] The liquid supplement unit 13 includes a plurality of first oil supplement branches 139 corresponding in number to the trace lubricating oil mist supply modules 121 and connected in parallel, each first oil supplement branch 139 is connected with each oil storage atomizing cylinder 21 respectively;

[0038] The control unit is configured to control the operation of the gas source unit 14, the operation of the gas source pressurizing unit 11, the generation and output of oil mist by the trace lubricating oil mist supply unit 12, and the operation of the liquid supplement unit 13. That is, the control unit controls the gas supply operation of the gas source unit 14, controls the gas pressurization of the gas source unit 14 provided by the gas source pressurizing unit 11, controls the supplement of oil in the oil storage atomizing cylinder 21 by the oil supplement unit 13 when the oil in the oil storage atomizing cylinder 21 is lower than the minimum oil value, and controls each unit to stop operation when the gas source unit 14, the gas source pressurizing unit 11, the trace lubricating oil mist supply unit 12 and the liquid supplement unit do not need to operate.

[0039] The trace lubricating oil mist supply unit 12 includes a plurality of trace lubricating oil mist supply modules 121; the trace lubricating oil mist supply module 121 is connected with the main shaft 15 one by one; the trace lubricating oil mist supply module 121 includes an oil storage atomizing cylinder 21 and a plurality of first electromagnetic valves 22; the oil storage atomizing cylinder 21 is provided with a first atomizer 23; the first electromagnetic valve 22 is connected with the first output channel 24 of the gas storage tank 112 and the corresponding first atomizer 23 respectively, for adjusting the amount of the first gas output by the gas storage tank 112, and transmitting the first gas to the first atomizer 23; the first oil supplement branch of the liquid supplement unit 13 is connected with the oil storage atomizing cylinder 21, for outputting lubricating oil to the cutting fluid area 211 when the liquid level of the cutting fluid area 211 is lower than the minimum threshold value; the first atomizer 23 is connected with the cutting fluid area 211, for obtaining lubricating oil; wherein the first atomizer 23 is also used for forming oil mist according to the first gas and the lubricating oil and transmitting the oil mist to the atomizing area 212 of the oil storage atomizing cylinder 21, so that the atomizing area 212 outputs the oil mist to the corresponding main shaft 15.

[0040] The utility model embodiment, trace lubrication supply system includes gas source pressurizing unit, trace lubricating oil mist supply unit and liquid supplement unit. Gas source pressurizing unit can carry out pressurization to initial gas and store in gas storage tank, form first gas; Trace lubricating oil mist supply unit includes a plurality of trace lubricating oil mist supply module, every trace lubricating oil mist supply module corresponds to connect a main shaft, then every trace lubricating oil mist supply module can provide oil mist to the internal cooling channel of one cutting tool; Liquid supplement unit transmits lubricating oil to the cutting fluid area of oil atomizing cylinder, avoids the condition that oil mist generation amount is little or cannot generate oil mist because of too low oil amount;Atomizing module mixes first gas and lubricating oil and forms oil mist output to the atomizing area of oil atomizing cylinder, and the atomizing area outputs oil mist to the corresponding main shaft. In the embodiment, it realizes the supply of the supply of a plurality of main shaft oil mist amount of the same set of trace lubrication system simultaneously, and can be individually controlled and adjusted to every trace lubricating oil mist supply module according to the machining demand of different main shafts, thereby realizing the individual control of the oil mist amount output to the main shaft, satisfies the machining demand of different types;And realize automatic liquid supplement through liquid supplement unit, guarantee stable oil mist supply in the processing. Further, when the internal cooling channel of cutting tool is big, then increase the main shaft gas intake, and then increase the oil mist amount of main shaft, to satisfy the demand of big aperture tool oil mist amount;When the internal cooling channel of cutting tool is small, individually increase the pressure difference of the atomizing in corresponding trace lubricating oil mist supply module, so that oil mist can be smoothly removed from the internal cooling channel of tool, realize lubrication and cooling in the processing, and compared with the traditional processing mode, reduce the use amount of cutting fluid in the processing. Therefore, the embodiment can provide different oil mist amount according to the internal cooling channel diameter of cutting tool, save the consumption of lubricating oil, effectively avoid environmental pollution problem.

[0041] The above is the core idea of the utility model, and the technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0042] Reference Figure 1The trace lubrication supply system can include a gas source pressurization unit 11, a trace lubrication oil mist supply unit 12, a liquid supplement unit 13, a gas source unit 14, and a control unit for controlling the above-mentioned units. Specifically, the control unit is electrically connected to the gas source pressurization unit 11, the trace lubrication oil mist supply unit 12, the gas source unit 14, and the liquid supplement unit 13 to control the operation of the gas source pressurization unit 11, the trace lubrication oil mist supply unit 12, the liquid supplement unit 13, and the gas source unit 14. The gas source pressurization unit 11 is connected to the gas source unit 14 and can pressurize the raw gas output by the gas source unit 14 and deliver it to the trace lubrication oil mist supply unit 12. The liquid supplement unit 13 can provide lubricating oil for the trace lubrication oil mist supply unit 12. The trace lubrication oil mist supply unit 12 can mix the pressurized raw gas and lubricating oil to form an oil mist and deliver it to the main shaft 15 connected to the tool.

[0043] Specifically, the gas source pressurization unit 11 can include a pressurization valve 111 and a gas storage tank 112. The pressurization valve 111 pressurizes the raw gas output by the gas source unit 14 and stores it in the gas storage tank 112. In this embodiment, the pressurized raw gas stored in the gas storage tank 112 can be referred to as first gas. The pressurization ratio of the pressurization valve 111 for the raw gas can be set according to user requirements. For example, the pressure ratio of the first gas to the raw gas in this embodiment is 2:1. Alternatively, the pressure of the raw gas can range from 0.58 MPa to 0.8 MPa, and the pressure of the first gas stored in the gas storage tank 112 can be less than or equal to 1.0 MPa.

[0044] The trace lubrication oil mist supply unit 12 can include a plurality of trace lubrication oil mist supply modules 121. Optionally, the trace lubrication oil mist supply module 121 includes a plurality of first output channels connected in parallel, a third electromagnetic valve 26, and a plurality of first electromagnetic valves 22. An atomization module is provided in the oil storage and atomization cylinder 21. The first output channel is connected to the gas source pressurization unit 11 and the oil storage and atomization cylinder 21. A third electromagnetic valve 26 is provided on any one of the first output channels, and a first electromagnetic valve 22 is provided on the remaining first output channels. A first pressure regulating valve 25 is provided between the third electromagnetic valve 26 and the oil storage and atomization cylinder 21, and the first pressure regulating valve is provided on the first gas output channel where the third electromagnetic valve 26 is located. The configuration in each trace lubrication oil mist supply module 121 is the same. In one embodiment, as shown in Figure 2As shown, the oil storage atomization cylinder 21 may include a cutting liquid area 211 and an atomization area 212. The cutting liquid area 211 and the atomization area 212 may be separated by a spacer layer 213, and an opening may be provided on the spacer layer 213. The atomization area 212 of the oil storage atomization cylinder 21 is equipped with a plurality of first atomizers 23; the first input terminal of the first atomizer 23 is connected to the corresponding first solenoid valve 22 to obtain the first gas; the second input terminal of the first atomizer 23 is connected to the cutting liquid area 211 to obtain lubricating oil, and the lubricating oil input by the rehydration unit 13 is stored in the cutting liquid area 211; the first atomizer 23 can mix the first gas and the lubricating oil to form an oil mist and output it to the atomization area 212 through the output terminal, and the atomization area 212 can output it to the spindle 15 through the oil mist output pipe 214.

[0045] It should be noted that there is not a one-to-one relationship between the first solenoid valve 22 and the first atomizer 23. The same first solenoid valve 22 can be connected to one or more first atomizers 23. Optionally, the first solenoid valve 22 may include: a sixth solenoid valve 221 and a seventh solenoid valve 222; the first atomizer 23 may include: a third atomizer 231, a fourth atomizer 232, and a fifth atomizer 233; the sixth solenoid valve 221 is connected to the third atomizer 231; and the seventh solenoid valve 222 is connected to the fourth atomizer 232 and the fifth atomizer 233, respectively. In this embodiment, by controlling the conduction, shutdown, and even the conduction opening of each first solenoid valve 22, the oil volume output by each micro-lubricating oil mist supply module 121 can be adjusted within a set range to meet the needs of tools of different diameters. Optionally, the setting range can be 0ml to 300ml / h. This embodiment uses a unique built-in micro-lubricating oil mist supply module 121 with a large oil volume adjustment range and strong versatility. The micro-lubrication oil mist supply module 121 can generate continuously adjustable oil mist, which can output oil mist particles less than or equal to 1μm, with fine lubrication, and can thoroughly lubricate deep hole processing. Optionally, the pressure range of any oil storage atomizing cylinder 21 is 0.3~1.0MPa, of which 0.3~0.65MPa is applied to the total area of ​​the internal coolant hole 2.2-5mm 2 The tool has a minimum diameter of 1mm and a maximum diameter of 4mm for a single hole; 0.65-1.0MPa is applied to the total area of ​​the internal coolant hole of 1.0-2.2mm 2 The tool has a minimum diameter of 0.5mm and a maximum diameter of 2mm for a single hole.

[0046] Optionally, the control unit in the minimal lubrication supply system is used to control the opening of each first solenoid valve 22 to individually control the amount of oil mist output to each spindle 15. This minimal lubrication supply system can be equipped with a control unit that can control the opening of each first solenoid valve 22. Through PLC control and a new electronically controlled spray pattern oil supply system, precise control and control are achieved, thereby reducing labor requirements.

[0047] The control unit of the embodiment can obtain three digital bits in the storage unit to distinguish and control the conduction relationship of the first electromagnetic valve 22 and the first atomizer 23. As shown in Table 1, Table 1 is a parameter setting corresponding table of the micro-lubrication oil mist supply module. Among them, the sixth electromagnetic valve 221 is connected with one first atomizer 23, the seventh electromagnetic valve 222 is connected with two first atomizers 23, the parameter table corresponds to the case that the sixth electromagnetic valve 221 is opened in sequence number 1; the seventh electromagnetic valve 222 is opened in sequence number 2; the sixth electromagnetic valve 221 and the seventh electromagnetic valve 222 are opened in sequence number 3; the sixth electromagnetic valve 221 is opened in sequence number 4; the seventh electromagnetic valve 222 is opened in sequence number 5; the sixth electromagnetic valve 221 and the seventh electromagnetic valve 222 are opened in sequence number 6; among them, sequence numbers 1-3 correspond to the tool with large inner cooling hole diameter, the fourth electromagnetic valve 28 is opened, the low pressure can be adjusted through the second pressure regulating valve 27 to increase the air inlet amount, and the third electromagnetic valve 26 does not need to be opened; sequence numbers 4-6 correspond to the tool with small inner cooling hole diameter, at this time, high pressure gas is needed to bring the oil mist into the inner cooling hole of the tool, at this time, the fourth electromagnetic valve 28 is not opened, the third electromagnetic valve 26 and the sixth electromagnetic valve 221 are opened to ensure the air inlet amount and air inlet pressure. The parameters corresponding to the two oil storage atomizing cylinders 21 and the corresponding same are not described here. The generation of the micro-lubrication supply system oil mist depends on the pressure difference and oil mist flow rate in the oil storage atomizing cylinder 21. The difference between the air inlet pressure P1 and the cylinder pressure P2 represents the pressure difference, the smaller the pressure difference, the less the generated oil mist; the larger the oil mist flow rate, the larger the amount of lubricating oil delivered. The size of the oil mist flow rate depends on the size of the tool inner cooling hole diameter. The size of the oil amount can also be adjusted by the number of the first atomizer opened. As shown in Table 1, each setting corresponds to an oil mist state, Bit0 controls the opening state of the third atomizer 231, Bit1 controls the opening state of the fourth atomizer 232, and Bit2 controls the opening state of the fifth atomizer 233. If there is an external atomization module, Bit3 control unit opening state can be set. The external atomization module sprays a fixed amount of oil mist at a fixed frequency. It should be noted that 0 means off and 1 means on.

[0048]

[0049] Figure 3 Another structure diagram of the micro-lubrication supply system is provided for the embodiment of the utility model, referring to Figure 2 and Figure 3The trace lubricating oil mist supply module 121 can further include a first pressure regulating valve 25 and a third electromagnetic valve 26. The first pressure regulating valve 25 is connected to the first output channel 24 of the gas storage tank 112 and the third electromagnetic valve 26 respectively, and is arranged on the first gas conveying channel where the third electromagnetic valve 26 is located, for regulating the pressure of the first gas and outputting the first gas to the atomization area 212 through the third electromagnetic valve 26. The atomization area 212 is used for outputting the mixture of the first gas after pressure regulation and the oil mist to the main shaft 15.

[0050] In the embodiment, the pressure regulating valve is used for adjusting the pressure, and the electromagnetic valve is used for on-off action. The first electromagnetic valve 22 and the third electromagnetic valve 26 are high-pressure electromagnetic valves (the high pressure can be less than or equal to 1.0 MPa). It should be noted that the first electromagnetic valve 22 is connected to the first atomizer 23, and the third electromagnetic valve 26 directly inputs the first gas after pressure regulation to the atomization area 212. Therefore, the mixture output to the main shaft through the oil mist output pipeline 214 is the mixture of the oil mist output by the first atomizer 23 and the first gas after pressure regulation. Figure 2 As shown in the figure, the first electromagnetic valve 22 is used for adjusting the pressure of the gas entering the oil mist storage and atomization cylinder 21, so that the oil mist storage and atomization cylinder 21 and the gas storage tank 112 have a certain pressure difference, that is, the gas pressure of the first gas is greater than the gas pressure of the atomization area 212 of the oil mist storage and atomization cylinder 21, so that the first gas in the gas storage tank 112 can be input into the oil mist storage and atomization cylinder 21, and the oil mist can be output from the atomization module after the oil mist is mixed with the oil in the atomization module. Optionally, the difference between the gas pressure of the first gas and the gas pressure of the atomization area 212 of the oil mist storage and atomization cylinder 21 is at least 0.1 MPa, so that the pressure of the gas storage tank is greater than the pressure in the oil mist storage and atomization cylinder, and the pressure suddenly increases to form the oil mist. Therefore, a pressure difference of at least 0.1 MPa is required to form the available oil mist. At the same time, the gas amount entering the oil mist storage and atomization cylinder 21 is ensured to form the oil mist. For example, the opening of the first electromagnetic valve 22 is adjustable, and the inner cooling hole diameter of the tool is small. Therefore, the conduction opening of the first electromagnetic valve 22 (the sixth electromagnetic valve 221 and the seventh electromagnetic valve 222) can be reduced to increase the pressure, ensure the gas amount, and increase the pressure difference between the tool end and the gas storage tank 112 to form the atomization. It should be noted that, compared with the third electromagnetic valve 26, the first electromagnetic valve 22 is used for controlling the lubricating oil to form the oil mist, and the gas amount is small, which is mainly used for pressurization. The first pressure regulating valve 25 and the third electromagnetic valve 26 are used for increasing the gas amount in the atomization area 212, mixing the oil mist in the atomization area 212, ensuring the pressure of the atomization area 212, and meeting the requirements of the tool with a small inner cooling hole diameter. The pressure difference required for the tool with a small inner cooling hole diameter is ensured to improve the lubrication effect. Optionally, the first pressure regulating valve 25 and the third electromagnetic valve 26 can be controlled by the control unit to realize PLC control and improve the cutting efficiency.

[0051] Optionally, the trace lubricating oil mist supply module 121 can further comprise a second pressure regulating valve 27 and a fourth electromagnetic valve 28; the fourth electromagnetic valve 28 is connected with the gas source unit 14 and the second pressure regulating valve 27 respectively, for transmitting the original gas to the second pressure regulating valve 27; the second pressure regulating valve 27 is connected with the oil storage atomizing cylinder 21, for pressurizing and transmitting the original gas to the atomizing area 212; the atomizing area 212 is used for outputting the mixture of the pressurized original gas and the oil mist to the main shaft 15. The second pressure regulating valve 27 and the fourth electromagnetic valve 28 have the same effect as the first pressure regulating valve 25 and the third electromagnetic valve 26, for further adjusting the pressure of the atomizing area 212, and at the same time, for cylinder gas charging of the atomizing area 212. However, the fourth electromagnetic valve 28 is connected with the gas source unit 14 and the second pressure regulating valve 27 respectively, so that the original gas can be directly transmitted to the second pressure regulating valve 27, so that the second pressure regulating valve 27 can input the pressurized original gas to the oil storage atomizing cylinder 21, for cylinder gas charging of the atomizing area 212. Further, when the gas amount of the gas storage tank 112 is insufficient for atomization when the main shaft 15 is replaced with a tool with a larger internal cooling hole diameter, the second pressure regulating valve 27 and the fourth electromagnetic valve 28 can increase the gas amount of the oil storage atomizing cylinder 21, so as to ensure the gas flow amount input to the tool with a larger internal cooling hole diameter.

[0052] Optionally, the first electromagnetic valve 22 and the third electromagnetic valve 26 are suitable for controlling the high-pressure gas source unit (less than or equal to 1.0 MPa), and the fourth electromagnetic valve 28 is suitable for controlling the ordinary gas source unit (0.5-0.8 MPa). In the embodiment, the second pressure regulating valve 27 and the fourth electromagnetic valve 28 can be manual pressure regulating valves. The second pressure regulating valve 27 can be opened to the maximum, and the pressure regulating valve filter 141 and the hand slide valve 142 are opened to ensure the gas amount. The first electromagnetic valve 22 and the third electromagnetic valve 26 can be adjusted according to the diameter of the tool internal cooling hole and the machining condition. If some tools require a large amount of oil, the pressure difference needs to be adjusted, and the control unit adjusts the pressure of the gas in the gas tank 112 through the pressure booster before the system starts. Then, the first electromagnetic valve 22 and the third electromagnetic valve 26 input the oil storage atomizing cylinder 21, so that the oil storage atomizing cylinder 21 and the gas tank 112 have a certain pressure difference, so as to atomize the mixed gas and oil cake of the atomization module. In other embodiments, when the first electromagnetic valve 22 and the third electromagnetic valve 26 are adjustable, the first electromagnetic valve 22 and the third electromagnetic valve 26 adjust the conduction opening according to the need. The larger the conduction opening, the smaller the pressure difference, and the smaller the conduction opening, the larger the pressure difference. When the diameter of the tool internal cooling hole is small, the pressure of the gas tank 112 is adjusted through the pressure booster, and the pressure difference between the oil storage atomizing cylinder 21 and the gas tank is increased. If the first electromagnetic valve 22 is adjustable, the conduction opening of the first electromagnetic valve 22 can also be reduced to increase the pressure difference between the gas tank 112 and the oil storage atomizing cylinder 21 to form atomization. The gas inlet amount of the first electromagnetic valve 22 and the third electromagnetic valve 26 can meet the requirements of the tool with a small internal cooling hole diameter. In other embodiments, the second pressure regulating valve 27 and the fourth electromagnetic valve 28 can also be electrically connected to the control unit to electrically control the valves and perform corresponding actions to improve work efficiency. Optionally, as shown in FIG. 13, the micro-lubrication oil mist supply module 121 can also include a pneumatic ball valve 29 used to open the oil mist output pipeline 214 under the action of gas pressure. Figure 3

[0053] Optionally, the liquid supplementing unit 13 includes an oil supplementing branch, a booster pump 132 and a liquid supplementing tank 131 arranged on the oil supplementing branch; the liquid supplementing tank 131 is connected with the booster pump 132; a filter 137 is arranged between the liquid supplementing tank 131 and the booster pump 132; the booster pump 132 is connected with the gas source unit 14; and the oil supplementing branch is connected with the first oil supplementing branch 139 respectively, so that the booster pump 132 outputs lubricating oil to each first oil supplementing branch.

[0054] Optionally, a second electromagnetic valve 133 and a check valve 138 are arranged on the first oil supplementing branch; the check valve 138 is arranged between the second electromagnetic valve 133 and the oil storage atomizing cylinder 21; and the micro-lubrication supply system further includes a control unit; and the control unit is electrically connected with the second electromagnetic valve 133.

[0055] ​Optionally, the liquid supplement unit further comprises a third pressure regulating valve 134, an oil atomizer 135 and a fifth electromagnetic valve 136; the gas source unit 14 comprises a first gas conveying channel 145 and a second gas conveying channel 146 connected with the oil storage atomizing cylinder 21; the second gas conveying channel 146 comprises a first gas conveying branch 1461 and a second gas conveying branch 1462; the first gas conveying branch 1461 is connected with the pressure boosting valve 111 of the gas source pressure boosting unit 11; the second gas conveying branch 1462 is connected with the pressure boosting pump 132, and along the direction from the gas source unit 14 to the pressure boosting pump 132, the second gas conveying branch 1462 is sequentially provided with the third pressure regulating valve 134, the oil atomizer 135 and the fifth electromagnetic valve 136. The oil atomizer 135 pre-stores lubricating oil. The first gas conveying channel 145 is directly connected with the oil storage atomizing cylinder 21 for directly providing raw gas for the oil storage atomizing cylinder 21. Optionally, the fifth electromagnetic valve 136 is a normally open electromagnetic valve; the oil atomizer 135 pre-stores lubricating oil for forming oil mist and transmitting to the fifth electromagnetic valve 136 and the pressure boosting pump 132.

[0056] Optionally, the first gas conveying channel 145 comprises a plurality of parallel third gas conveying branches 1451; each third gas conveying branch 1451 is connected with each oil storage atomizing cylinder 21 in one-to-one correspondence; the third gas conveying branch 1451 is provided with a fourth electromagnetic valve 28; a second pressure regulating valve 27 is arranged between the fourth electromagnetic valve 28 and the oil storage atomizing cylinder 21; a one-way valve 51 is arranged between the second pressure regulating valve 27 and the oil storage atomizing cylinder 21; the first gas conveying channel 145 is provided with a pressure detection module 52.

[0057] Specifically, the liquid supplement unit 13 can comprise a liquid supplement tank 131, a pressure boosting pump 132 and a plurality of second electromagnetic valves 133; the second electromagnetic valves 133 are connected with the oil storage atomizing cylinders 21 in one-to-one correspondence; all the pressure boosting pumps 132 are used for boosting the lubricating oil in the liquid supplement tank 131 and transmitting the lubricating oil to the cutting fluid area 211 of the corresponding oil storage atomizing cylinder 21 through the second electromagnetic valves 133.

[0058] The second electromagnetic valve 133 is suitable for controlling a high-pressure gas source unit (1.2 MPa-3.0 MPa). The output pressure of the liquid supplement unit 13 is 1.2 MPa-3.0 MPa (adjustable), which supplies lubricating oil for the trace lubricating oil mist supply module 121. The pressure boosting pump 132 boosts the lubricating oil in the liquid supplement tank 131 and pumps the lubricating oil into the cutting fluid area 211 of the oil storage atomizing cylinder 21. The second electromagnetic valve 133 rapidly pumps the boosted lubricating oil into the cutting fluid area 211.

[0059] The replenishing unit 13 can further comprise a third pressure regulating valve 134, an oil atomizer 135, a fifth electromagnetic valve 136, a filter 137 and a one-way valve 138; the third pressure regulating valve 134 is connected to the air source unit 14 and the oil atomizer 135 respectively, so that the oil atomizer 135 forms oil mist and transmits to the fifth electromagnetic valve 136; the fifth electromagnetic valve 136 is used to transmit the oil mist to the booster pump 132 to lubricate the booster pump 132; the filter 137 is arranged between the replenishing oil tank 131 and the booster pump 132; the filter 137 is used to filter out impurities of the lubricating oil output by the replenishing oil tank 131; the one-way valve 138 is arranged between the second electromagnetic valve 133 and the oil storage atomizing cylinder 21; the one-way valve 138 is used to control the one-way flow of the lubricating oil from the second electromagnetic valve 133 to the oil storage atomizing cylinder 21.

[0060] The oil atomizer 135 can atomize oil mist from the pressurized raw gas output by the third pressure regulating valve 134, and the oil mist is used to lubricate the fifth electromagnetic valve 136 and the booster pump 132; the oil in the oil atomizer 135 is stored in advance, and the oil mist can be directly generated when the gas passes through to lubricate the fifth electromagnetic valve 136 and the booster pump 132; at the same time, the oil mist enters the booster pump 132 (gas-liquid booster pump) through the fifth electromagnetic valve 136 to pressurize the oil. The one-way valve 138 is used to ensure the one-way flow of the oil, and the backflow is prevented. The third pressure regulating valve 134 of the replenishing unit 13 is used to adjust the pressure of the oil, and the pressure is greater than that of the oil storage atomizing cylinder 21, so as to supplement the oil to the oil storage atomizing cylinder 21. When the liquid level sensor 215 of the oil storage atomizing cylinder 21 receives the lowest liquid level signal, the control unit controls the replenishing unit tank to supplement the oil to the oil storage atomizing cylinder 21. Optionally, the trace lubrication supply system can further comprise an alarm module, the alarm module can comprise an indicator light, which can display green and red, and the control unit 16 controls the alarm module, for example, when the indicator light is red and flickers, it means that the lubricating oil in the oil storage atomizing cylinder is lower than the lowest liquid level, and the replenishing unit 13 is controlled to supplement the oil; when the indicator light is red and constant, it means that the air source unit is insufficient in pressure, and the air source unit needs to be checked; when the indicator light is green and constant, it means that the air source unit and the lubricating oil level in the oil storage atomizing cylinder are normal.

[0061] Optionally, the micro-lubrication supply system can further comprise: an external atomization module 17; the external atomization module 17 is connected with the micro-lubrication oil mist supply module 121 one by one; a pneumatic ball valve 29 is arranged between the external atomization module 17 and the micro-lubrication oil mist supply module 121; the external atomization module 17 is used for outputting the oil mist output by the corresponding micro-lubrication oil mist supply module 121 to the corresponding main shaft. The external atomization module 17 is used for connecting the corresponding main shaft 15 and the corresponding micro-lubrication oil mist supply module 121 respectively; the external atomization module 17 is further connected with the booster pump 132, and is used for outputting the oil mist to the main shaft 15 when the output oil mist amount of the oil mist atomization cylinder 21 of the micro-lubrication oil mist supply module 121 is less than the main shaft amount. The external atomization module 17 is an optional module, and is specifically used when the machining demand oil amount cannot be reached. The external atomization module 17 is connected in the pipeline, if not selected, it serves as a pipeline, and the atomization function is not started, when the atomization function of the external atomization module 17 is needed, the atomization function of the external atomization module 17 can be directly started. Specifically, the external atomization module 17 can comprise: an electronic pump, a merging block and a second atomizer; the electronic pump is used for pumping the lubricating oil output by the booster pump into the merging block; the second atomizer is used for generating the oil mist according to the lubricating oil input by the merging block and the gas output by the oil mist atomization cylinder and transmitting the oil mist to the main shaft. Optionally, the liquid supplementing unit 13 further comprises a second oil supplementing branch 1391; the second oil supplementing branch 1391 connects the external atomization modules 17 in series; the second oil supplementing branch 1391 is connected with the booster pump 132, and is used for obtaining the lubricating oil output by the booster pump 132.

[0062] Figure 4 Another micro-lubrication supply system structure schematic view provided for the embodiment of the utility model. Figure 4 The actual structure diagram of each module in the micro-lubrication supply system is shown. The control unit 16 can send a control signal to control the first electromagnetic valve of the two micro-lubrication oil mist supply modules 121. The control unit 16 is electrically connected with the pneumatic ball valve 29, so as to realize the PLC control of the pneumatic ball valve 29. The output end of the micro-lubrication oil mist supply module 121 is connected to the external atomization module 17, and is connected to the main shaft 15 through the rotating structure 151 by the output pipe diameter (the airflow sensor 30 can be arranged on the pipe diameter) of the external atomization module 17. The mixture of the oil mist and the gas passes through the internal cooling channel 152. The main shaft 15 is connected to the internal cooling tool holder 71 of the tool 72. The control unit 16 is connected with the micro-lubrication oil mist supply module 121, the pneumatic ball valve 29, the external atomization module 17 and the airflow sensor 30 respectively.

[0063] On the basis of the above embodiment, the specific machining process is described in detail taking the oil mist atomization cylinder 21 shown in Figure 2 as an example. As Figure 2 and Figure 3As shown, specifically: the oil mist pipeline, gas pipeline, oil pipeline and control circuit of the connected double micro-lubrication oil mist supply module, at this time the compressed air flows to the booster pump 132 through the pressure regulating valve 134, the booster pump 132 is in the gas tank pressure maintaining, when the gas tank 112 is adjusted to the required gas source unit pressure (≥1.0MPa), when the oil volume of the oil mist atomizing cylinder 21 is between the lowest and highest liquid levels, when the control unit 16 indicator light is green (no other abnormal alarm light is on), the micro-lubrication supply system is in the correct standby start state, at this time all the electromagnetic valves and pneumatic ball valves are in the closed state, only the fifth electromagnetic valve 136 of the liquid supplement unit is in the open state, which keeps the output pressure of the micro-lubrication oil mist supply module 121 and the external atomization module 17 at all times; before running, make sure that each tool at the end of the double-spindle machining center is selected with appropriate parameters, and adjust the corresponding oil output and pressure parameters (parameter adjustment reference table 1), this link should be debugged before cutting processing can be carried out; when the required signal is sent from the double-spindle machining center end, at this time the corresponding electromagnetic valve and pneumatic ball valve of the micro-lubrication supply system are opened together, the compressed air flows into the built-in atomizer and the oil mist atomizing cylinder, the built-in atomizer generates oil mist, the compressed air and the oil mist enter the spindle through the oil mist pipeline, and reach the internal cooling hole of the tool until the machining area; if the oil volume needs to be increased at this time, the machining center end can select a larger oil volume parameter, or the parameter instruction of the external atomization module 17 can be increased to increase the oil volume to meet the machining demand; when the double-spindle machining center end changes the tool or stops during the machining process, the micro-lubrication supply system also stops according to the instruction, when a hole with a large internal cooling hole diameter is selected, the program will call the parameter of the large internal cooling hole diameter, and the same is true when a hole with a small internal cooling hole diameter is selected, which depends on the parameters set during debugging or according to the internal cooling hole diameter.

[0064] In summary, the micro-lubrication supply system of the embodiment increases an oil mist atomizing cylinder, so that the gas pressures of the two spindles are separately divided, avoiding various problems of the single-cylinder micro-lubrication supply system; at the same time, the system is provided with a booster unit to deliver stable high pressure to the gas source unit to match various machining demands; in addition, a liquid supplement unit is added to supplement lubricating oil for the lubricating device, reducing the workload of personnel, reducing downtime and increasing the time of lubricating oil, and at the same time providing stable oil output for the external atomization module, achieving two goals at once. At the same time, the use amount of lubricating oil is effectively saved, and suitable oil mist of lubricating oil is provided for each spindle to improve the utilization rate of lubricating oil.

[0065] Based on the same concept, the embodiment also provides a machining device, such as Figure 5As shown, Figure 5 The processing device 100 includes a spindle 15 and a micro-lubrication supply system 200. The micro-lubrication supply system 200 includes a micro-lubrication oil mist supply unit 12, which can include a plurality of micro-lubrication oil mist supply modules 121, and the micro-lubrication oil mist supply modules 121 are arranged one-to-one corresponding to the spindle 15. In this embodiment, the same set of micro-lubrication system can supply oil mist to multiple spindles 15, and each micro-lubrication oil mist supply module 121 can be controlled and adjusted individually according to the processing requirements of different spindles 15, so as to realize individual control of the output of oil mist to the spindle 15 and meet different processing requirements. In addition, the liquid supplement unit can realize automatic liquid supplement to ensure stable oil mist supply during processing. Further, when the internal cooling channel of the cutting tool is large, the spindle gas inlet amount is increased, and the oil mist amount of the spindle 15 is increased to meet the oil mist amount requirement of the large-aperture tool.

[0066] The processing device provided in this embodiment includes the technical features of the micro-lubrication supply system provided in any embodiment of the present application, and has the beneficial effects of the corresponding technical features.

[0067] On the basis of the above-mentioned embodiments, the processing device further includes a tool mounted on the spindle, and the pressure range of any of the oil storage and atomization cylinders is 0.3-1.0 MPa. Among them, 0.3-0.65 MPa is applied to a tool with an internal cooling hole total area of 2.2-5 mm 2 , and the minimum diameter of a single aperture is 1 mm and the maximum diameter is 4 mm; 0.65-1.0 MPa is applied to a tool with an internal cooling hole total area of 1.0-2.2 mm 2 , and the minimum diameter of a single aperture is 0.5 mm and the maximum diameter is 2 mm. When the internal cooling channel of the cutting tool is small, the differential pressure for atomization in the corresponding micro-lubrication oil mist supply module 121 is increased, so that the oil mist can be smoothly discharged from the internal cooling channel of the tool, realizing lubrication and cooling during processing, and reducing the amount of cutting fluid used during processing compared with the traditional processing mode. Therefore, this embodiment can provide different oil mist amounts according to the different diameters of the internal cooling channels of the cutting tools, save the consumption of lubricating oil, and effectively avoid environmental pollution problems.

[0068] It should be noted that the above only the preferred embodiments of the present application and the use of technical principles. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, those skilled in the art can make various obvious changes, re-adjustment and replacement without departing from the scope of the present application. Therefore, although the above embodiments of the present application has been described in more detail, but the present application is not limited to the above examples, without departing from the concept of the present application, but also can include more other equivalent embodiments, and the scope of the present application is determined by the appended claims.

Claims

1. A microlubrication supply system, characterized in that, The application relates to a micro-lubricating oil mist supply device. The device comprises a control unit, a gas source unit, a gas source pressurizing unit, a micro-lubricating oil mist supply unit and a liquid supplementing unit which are connected with the control unit respectively. The gas source unit is connected with the gas source pressurizing unit and the micro-lubricating oil mist supply unit respectively, the gas source pressurizing unit is connected with the micro-lubricating oil mist supply unit, the micro-lubricating oil mist supply unit is provided with a plurality of groups of micro-lubricating oil mist supply modules which are connected in parallel, each micro-lubricating oil mist supply module is provided with an oil storage atomizing cylinder. The liquid supplementing unit comprises a plurality of first oil supplementing branches which are connected in parallel and correspond to the number of the micro-lubricating oil mist supply modules, each first oil supplementing branch is connected with each oil storage atomizing cylinder respectively. The control unit is configured to control the operation of the gas source unit, the operation of the gas source pressurizing unit, the generation and output of oil mist by the micro-lubricating oil mist supply module and the operation of the liquid supplementing unit.

2. The microlubrication supply system according to claim 1, characterized in that, The liquid supplementing unit comprises an oil supplementing combination, a pressurizing pump and a liquid supplementing tank which are arranged on the oil supplementing combination. The liquid supplementing tank is connected with the pressurizing pump, a filter is arranged between the liquid supplementing tank and the pressurizing pump, the pressurizing pump is connected with the gas source unit, and the oil supplementing combination is connected with each first oil supplementing branch respectively.

3. The microlubrication supply system of claim 1, wherein, A second electromagnetic valve and a one-way valve are arranged on the first oil supplementing branch, and the one-way valve is arranged between the second electromagnetic valve and the oil storage atomizing cylinder.

4. The microlubrication supply system of claim 2, wherein, The liquid supplementing unit further comprises a third pressure regulating valve, an oil mist generator and a fifth electromagnetic valve, the gas source unit comprises a first gas conveying channel and a second gas conveying channel which are connected with the oil storage atomizing cylinder. The second gas conveying channel comprises a first gas conveying branch and a second gas conveying branch, the first gas conveying branch is connected with a pressurizing valve of the gas source pressurizing unit, the second gas conveying branch is connected with the pressurizing pump, and the second gas conveying branch is sequentially provided with the third pressure regulating valve, the oil mist generator and the fifth electromagnetic valve along the direction from the gas source unit to the pressurizing pump. The oil mist generator pre-stores lubricating oil.

5. The microlubrication supply system according to claim 4, characterized in that The first gas conveying channel comprises a plurality of parallel third gas conveying branches. Each third gas conveying branch is connected with each oil storage atomizing cylinder one by one, a fourth electromagnetic valve is arranged on the third gas conveying branch, a second pressure regulating valve is arranged between the fourth electromagnetic valve and the oil storage atomizing cylinder, and a one-way valve is arranged between the second pressure regulating valve and the oil storage atomizing cylinder. The first gas conveying channel is provided with a pressure detecting module.

6. The microlubrication supply system of claim 2, wherein, The device further comprises an external atomizing module. The external atomizing module is connected with the micro-lubricating oil mist supply module one by one, a pneumatic ball valve is arranged between the external atomizing module and the micro-lubricating oil mist supply module. The external atomizing module is used for outputting the oil mist output by the corresponding micro-lubricating oil mist supply module to the corresponding main shaft. The liquid supplementing unit further comprises a second oil supplementing branch.

7. The microlubrication supply system according to claim 6, characterized in that The second oil supplementing branch connects the external atomizing modules in series, and the second oil supplementing branch is connected with the pressurizing pump. The micro-lubricating oil mist supply module comprises a plurality of first output channels, a third electromagnetic valve and a plurality of first electromagnetic valves which are connected in parallel, and the oil storage atomizing cylinder is provided with an atomizing module.

8. The microlubrication supply system of claim 1, wherein, ​ The first output channels are connected with the air source pressurizing unit and the oil storage atomizing cylinder, the third electromagnetic valve is arranged on any one of the first output channels, the first electromagnetic valve is arranged on the remaining first output channels, and a first pressure regulating valve is arranged between the third electromagnetic valve and the oil storage atomizing cylinder.

9. A processing apparatus characterized by comprising: The micro-lubrication supply system comprises a spindle and the micro-lubrication oil mist supply module as claimed in any one of claims 1 to 8, and each micro-lubrication oil mist supply module is connected with a spindle.

10. The processing apparatus of claim 9, wherein, Also including the cutter installed on the main shaft, the pressure range of any said oil storage atomization cylinder is 0.3-1.0MPa, wherein 0.3-0.65MPa is applied to the cutter with the total area of inner cooling hole being 2.2-5mm 2 , and the minimum diameter of single hole being 1mm and the maximum diameter being 4mm; 0.65-1.0MPa is applied to the cutter with the total area of inner cooling hole being 1.0-2.2mm 2 , and the minimum diameter of single hole being 0.5mm and the maximum diameter being 2mm.

Images