CN110553132A - Intelligent micro-lubricating system and ring block friction wear testing machine with same - Google Patents
Intelligent micro-lubricating system and ring block friction wear testing machine with same Download PDFInfo
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- CN110553132A CN110553132A CN201910868417.2A CN201910868417A CN110553132A CN 110553132 A CN110553132 A CN 110553132A CN 201910868417 A CN201910868417 A CN 201910868417A CN 110553132 A CN110553132 A CN 110553132A
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- 238000012360 testing method Methods 0.000 title claims abstract description 101
- 239000000314 lubricant Substances 0.000 claims abstract description 96
- 238000005461 lubrication Methods 0.000 claims abstract description 45
- 239000007921 spray Substances 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 9
- 238000000889 atomisation Methods 0.000 abstract description 22
- 230000007246 mechanism Effects 0.000 abstract description 10
- 230000001050 lubricating effect Effects 0.000 abstract description 7
- 238000002156 mixing Methods 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 5
- 238000011160 research Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N23/00—Special adaptations of check valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N29/00—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems
- F16N29/04—Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems enabling a warning to be given; enabling moving parts to be stopped
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
- F16N39/06—Arrangements for conditioning of lubricants in the lubricating system by filtration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/30—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated the oil being fed or carried along by another fluid
- F16N7/32—Mist lubrication
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/36—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with feed by pumping action of the member to be lubricated or of a shaft of the machine; Centrifugal lubrication
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Dispersion Chemistry (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses an intelligent micro-lubricating system and a ring block friction wear testing machine with the same. The pressure, flow and the like of gas and liquid before mixing can be controlled according to requirements, so that the atomization degree of the trace lubricant is controlled, and the intelligent control of a trace lubricating system is realized; meanwhile, the research on the material friction and wear mechanism and the minimal quantity lubrication and lubrication mechanism in a minimal quantity lubrication state is realized on a ring block friction and wear testing machine.
Description
Technical Field
The invention relates to the technical field of friction and wear testing machines, in particular to an intelligent minimal quantity lubrication system and a ring block friction and wear testing machine with the same.
Background
the ring block friction wear testing machine is mainly used for the wear performance research of various metal and non-metal materials and coatings, is also used for the lubricating performance test of lubricating oil and lubricating grease, and is particularly suitable for the evaluation of the anti-abrasion performance of the oil of medium and high-grade automobile gears.
At present, a friction wear testing machine is mainly lubricated by using traditional ways such as lubricating oil and lubricating grease, the using amount of the lubricating agent is large, and a lubricating way of micro-lubrication is lacked. The micro-lubricating mql (minimum quality lubrication) technique mixes a small amount of non-hazardous lubricant into compressed air to replace a large amount of lubricant, and performs cooling and lubrication. The major advantages of micro-lubrication are that the lubricant is supplied by high-speed fog particles as an effective green processing mode, the permeability of the lubricant is increased, the cooling and lubricating effects are improved, the surface processing quality of a workpiece is improved, the using amount of the lubricant is only one ten-thousandth or lower than that of the traditional cooling liquid, so that the cost of the cooling liquid is greatly reduced, and secondly, the micro-lubrication is to atomize or ultra-refine the lubricant, directly enter a friction area to realize sufficient lubrication under the carrying of high-speed airflow, the lubricating effect is obvious, and the friction can be effectively improved. However, the existing trace lubrication system cannot perform closed-loop control on pressure, flow and atomization degree, has a rough structure, and cannot meet the requirement of intelligent fine control.
Disclosure of Invention
the invention aims to provide an intelligent micro-lubricating system and a ring block friction wear testing machine with the same, which well solve the problems and can control the pressure, flow and the like of gas and liquid before mixing according to the requirements, thereby controlling the atomization degree of a micro-lubricating agent and realizing the intelligent control of the micro-lubricating system; meanwhile, the research on the material friction and wear mechanism and the minimal quantity lubrication and lubrication mechanism in a minimal quantity lubrication state is realized on a ring block friction and wear testing machine.
The invention adopts the technical scheme that the intelligent minimal quantity lubrication system comprises an adjustable lubricant supply pipeline and an adjustable gas supply pipeline, wherein the adjustable lubricant supply pipeline and the adjustable gas supply pipeline are connected with a spray head through an oil-gas mixer, and the adjustable gas supply pipeline provides power for the adjustable lubricant supply pipeline through a pneumatic frequency generator.
Through the combination of the adjustable lubricant supply pipeline and the adjustable gas supply pipeline, compressed gas and lubricant are mixed in the oil-gas mixer, and then are uniformly sprayed out through the spray head, so that the atomization of the lubricant is realized, and the atomization degree is controllable and adjustable. The adjustable lubricant supply pipeline and the adjustable gas supply pipeline can adopt a plurality of pipelines to be connected with one oil-gas mixer, also can adopt a pipeline to be connected with a plurality of oil-gas mixers, and can make proper adjustment according to the atomizing requirement and the actual micro-lubricating range.
Furthermore, the adjustable gas supply pipeline comprises an air compressor, a gas source processor, a two-position two-electromagnetic-valve and a flow divider which are sequentially connected through pipelines, a first passage of the flow divider is connected with the pneumatic frequency generator, and a second passage of the flow divider is connected with the oil-gas mixer through a pressure reducing valve and a throttle valve. An air compressor is adopted, compressed air is provided, power is provided for an adjustable lubricant supply pipeline, power sources are reduced, production cost is saved, and the structure is more reasonable; and the pressure reducing valve and the throttle valve are simultaneously designed for the gas supply pipeline, so that the pressure of the output gas can be regulated, the flow of the output gas can be regulated, and the fine regulation of the output gas is realized.
Furthermore, the adjustable lubricant supply pipeline comprises an oil tank and a pneumatic pump which are sequentially connected through pipelines, the pneumatic pump is connected with the oil-gas mixer through a pressure reducing valve and a throttle valve, and the pneumatic frequency generator is in power connection with the pneumatic pump. The pneumatic frequency generator is connected with the pneumatic pump, a power source is provided for the adjustable lubricant supply pipeline, power is provided for lubricant output, and the pressure reducing valve and the throttle valve are designed for the lubricant supply pipeline at the same time, so that the pressure of the output lubricant can be adjusted, the flow of the output lubricant can be adjusted, and the fine adjustment of the output lubricant is realized.
Furthermore, the rear parts of the pressure reducing valve and the throttle valve are respectively connected with a pressure sensor and a flow sensor. The pressure sensor and the flow sensor are convenient for operators to master pressure and flow data in the pipeline, and then the pressure sensor and the flow sensor are adjusted according to requirements.
Further, the pressure reducing valve and the throttle valve are respectively an electric control pressure reducing valve and an electric control throttle valve. The design of the electric control pressure reducing valve and the electric control throttle valve improves the automation capacity of the whole system, is convenient for electric control and provides conditions for more detailed adjustment.
The invention also provides a ring block friction wear testing machine which comprises the intelligent minimal quantity lubrication system. Certainly, the intelligent minimal quantity lubrication system can be embedded into the ring block friction wear testing machine in a direct additional installation mode, and minimal quantity lubrication is provided for the test.
further, still include the tester casing, experimental cavity has been seted up on the tester casing, be provided with friction wear module and PM2.5 sensor in the experimental cavity, experimental cavity still is provided with sealing door. The test cavity is a sealed cavity, so that the friction wear test and the minimal quantity lubrication are both in a sealed environment, the atomized lubricant is prevented from drifting to the external environment in the minimal quantity lubrication process, and the friction wear test is always in a sealed minimal quantity lubrication environment. The design of the PM2.5 sensor enables an operator to detect parameters such as the atomization degree of the lubricant in the test cavity, and the like, so that the parameters such as pressure, flow, proportion and the like between the lubricant and compressed gas can be adjusted conveniently according to the parameters, and proper micro-lubrication conditions can be obtained.
Furthermore, the friction and wear module comprises a test block mounting assembly and a test ring mounting assembly which are vertically arranged, the test block mounting assembly comprises a closed linear module, a servo motor for driving the closed linear module and a test block fixing shaft mounted on the closed linear module, and the test ring mounting assembly comprises a test ring fixing shaft and a servo motor for driving the test ring fixing shaft to rotate. The test block mounting assembly and the test ring mounting assembly are both arranged in the sealed cavity of the test cavity, so that the atomized lubricant is prevented from floating. Of course, in order to move the test block up and down, a telescopic device such as a screw rod or a hydraulic telescopic cylinder may be used.
Furthermore, the test block fixing shaft and the test ring fixing shaft are arranged perpendicularly, a force sensor is installed on the test block fixing shaft, and a sealing ring is sleeved on the test ring fixing shaft. The design of sealing washer has further guaranteed that the rotation of examination ring is also in sealed environment. And the design of the force sensor enables an operator to know parameters such as the contact force of the test block and the test ring.
Furthermore, the number of the spray heads is two, and the two spray heads are respectively arranged on two sides of the upper part of the test cavity. The atomized lubricant is more fully and quickly filled in the seal cavity.
The invention has the beneficial effects that:
1. The intelligent micro-lubricating system is provided with the adjustable lubricant supply pipeline and the adjustable gas supply pipeline, and can adjust the pressure, flow and the like of gas and lubricant before mixing according to the requirement, so that the atomization degree of the micro-lubricant is controlled, and the intelligent control of the micro-lubricating system is realized; meanwhile, a pneumatic frequency generator is adopted, namely an adjustable gas supply pipeline is used for providing power for an adjustable lubricant supply pipeline, so that the use of multiple groups of power sources is avoided, the equipment cost is reduced, and the pneumatic frequency generator is compact in structure and reasonable in design;
2. The ring block friction wear testing machine provided by the invention adopts the intelligent minimal quantity lubrication system, can judge the atomization degree of the lubricant in the test wall body through the signal of the PM2.5 sensor in the test cavity, and further feeds back the atomization degree to the adjustable lubricant supply pipeline and the adjustable gas supply pipeline, so that the intelligent adjustment of the minimal quantity lubricant is realized, the mechanism of friction wear based on the minimal quantity lubrication condition can be researched, and the lubrication mechanism of the minimal quantity lubrication in different atomization states can also be researched.
drawings
FIG. 1 is a schematic diagram of a first embodiment of an intelligent minimal quantity lubrication system according to the present invention;
FIG. 2 is a schematic diagram of a second embodiment of the intelligent minimal quantity lubrication system of the present invention;
FIG. 3 is a schematic structural diagram of a second embodiment of the intelligent minimal quantity lubrication system of the present invention;
FIG. 4 is a schematic structural diagram of the ring block friction wear testing machine of the present invention;
FIG. 5 is a schematic view of an internal structure of the ring block friction wear testing machine of the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", etc. indicate orientations or positional relationships based on those shown in the drawings or orientations or positional relationships that the products of the present invention conventionally use, which are merely for convenience of description and simplification of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
in the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention provides an intelligent minimal quantity lubrication system which comprises an adjustable lubricant supply pipeline and an adjustable gas supply pipeline, wherein the adjustable lubricant supply pipeline and the adjustable gas supply pipeline are connected with a spray head A10 through an oil-gas mixer A9, and the adjustable gas supply pipeline provides power for the adjustable lubricant supply pipeline through a pneumatic frequency generator A5.
In the first embodiment, as shown in fig. 1, in the intelligent minimal quantity lubrication system, the adjustable gas supply line includes an air compressor a1, a gas source processor a2, a two-position two-way electromagnetic valve A3, and a diverter valve a4, which are connected in sequence by pipes, a first passage of the diverter valve a4 is connected with a pneumatic frequency generator a5, a second passage of the diverter valve a4 is connected with an oil-gas mixer a9 through a gas pressure reducing valve a11 and a gas throttle valve a13, the gas pressure reducing valve a11 and the gas throttle valve a13 are connected at the rear portions thereof with a gas pressure sensor a12 and a gas flow sensor a14 respectively, the gas pressure reducing valve A11 and the gas throttle valve A13 are respectively a gas electric control pressure reducing valve and a gas electric control throttle valve, the gas-operated pressure reducing valve and the gas-operated throttle valve can be adjusted according to the pressure and flow signals of the gas measured by the gas pressure sensor A12 and the gas flow sensor A14 to obtain the required pressure and flow of the gas.
the adjustable lubricant supply pipeline comprises an oil tank A7 and a pneumatic pump A6 which are sequentially connected through pipelines, the pneumatic pump A6 is connected with an oil-gas mixer A9 through a lubricant pressure reducing valve A21 and a lubricant throttle valve A23, the pneumatic frequency generator A5 is in power connection with the pneumatic pump A6, and the pneumatic frequency generator A5 provides power for the pneumatic pump A6. The rear parts of the lubricant pressure reducing valve A21 and the lubricant throttle valve A23 are respectively connected with a lubricant pressure sensor A22 and a lubricant flow sensor A24, the lubricant pressure reducing valve A21 and the lubricant throttle valve A23 are respectively a lubricant electric control pressure reducing valve and a lubricant electric control throttle valve, and the lubricant electric control pressure reducing valve and the lubricant electric control throttle valve can be adjusted according to pressure and flow signals of lubricant measured by the lubricant pressure sensor A22 and the lubricant flow sensor A24 so as to obtain required lubricant pressure and flow.
a filter A8 is also provided between the oil tank a7 and the pneumatic pump a6 to filter the lubricant entering the adjustable lubricant supply line.
The specific using process is as follows: starting an intelligent minimal quantity lubrication system, opening a two-position two-way electromagnetic valve, and starting a pneumatic pump A6; adjusting the corresponding electric control pressure reducing valve and the electric control throttle valve according to signals fed back by each pressure sensor and each flow sensor to enable the pressure and the flow of the gas and the lubricant before mixing to reach preset values; the gas and the lubricant enter an oil-gas mixer A9 to be mixed, and then the trace lubricant with the required atomization degree is sprayed out from a spray head A10, the atomization degree can be adjusted according to actual needs, the adjustment mode is to adjust electric control pressure reducing valves and electric control throttle valves at different positions to obtain the required pressure and flow, and finally the trace lubricant with different atomization degrees is obtained.
The intelligent micro-lubricating system is provided with the adjustable lubricant supply pipeline and the adjustable gas supply pipeline, and can adjust the pressure, flow and the like of gas and lubricant before mixing according to the requirement, so that the atomization degree of the micro-lubricant is controlled, and the intelligent control of the micro-lubricating system is realized; meanwhile, the pneumatic frequency generator A5 is adopted, namely the adjustable gas supply pipeline supplies power to the adjustable lubricant supply pipeline, so that the use of multiple groups of power sources is avoided, the equipment cost is reduced, the structure is compact, and the design is reasonable. The pressure, the flow and the atomization degree of the closed-loop control micro-lubricating system are realized.
In the second embodiment, as shown in fig. 2, on the basis of the first embodiment, the oil-gas mixer and the spray head are provided with two groups, so that atomized trace lubricant is more uniform, the spraying is quicker, and the atomization degree is quicker to reach the preset value.
The specific adjustable gas supply pipeline comprises an air compressor B1, a gas source processor B2, a two-position two-electromagnetic valve B3 and a first gas diverter valve B4 which are sequentially connected through pipelines, a first passage of the first gas diverter valve B4 is connected with a pneumatic frequency generator B5, a second passage of the first gas diverter valve B4 is connected with a second gas diverter valve B6, a first passage of the second gas diverter valve B6 is sequentially connected with a first gas electric control pressure reducing valve B101, a first gas pressure sensor B102, a first gas electric control throttle valve B103 and a first gas flow sensor B104 through pipelines, then the first oil-gas mixer B10 and the first spray head B11 are connected, and the second channel of the second gas flow divider B6 is connected with a second gas electric control pressure reducing valve B201, a second gas pressure sensor B202, a second gas electric control throttle valve B203 and a second gas flow sensor B204 in sequence through pipelines, and then is connected with a second oil-gas mixer B20 and a second spray head B21.
The adjustable lubricant supply pipeline comprises an oil tank 7 and a pneumatic pump 9 which are sequentially connected through a pipeline, the pneumatic pump B9 is in power connection with a pneumatic frequency generator B5, the pneumatic pump B9 is connected with a lubricant diverter valve B12, a first channel of the lubricant diverter valve B12 is sequentially connected with a first lubricant electric control pressure reducing valve B301, a first lubricant pressure sensor B302, a first lubricant electric control throttle valve B303 and a first lubricant flow sensor B304 through pipelines, and then is connected with a first oil-gas mixer B10 and a first spray head B11; the second channel of the lubricant diverter valve B12 is sequentially connected with a second lubricant electronic control pressure reducing valve B401, a second lubricant pressure sensor B402, a second lubricant electronic control throttle valve B403 and a second lubricant flow sensor B404 through pipelines, and then is connected with a second oil-gas mixer B20 and a second spray head B21. A filter B8 is also provided between the oil tank B7 and the pneumatic pump B9 to filter the lubricant entering the adjustable lubricant supply line. Lubricant is placed in the oil tank B7, and a liquid level alarm 13 is also arranged on the oil tank B7.
The two adjustable gas supply pipelines and the adjustable lubricant supply pipelines are separated from the same gas source and the same lubricant tank, the structural design is reasonable, and the lubricant atomization degree is adjusted more quickly and reliably.
the invention also provides a ring block friction wear testing machine which comprises a testing machine shell 1, wherein the upper half part of the testing machine shell 1 is provided with a testing cavity 2, a sealing door 3 is arranged outside the testing cavity 2, the testing cavity 2 and the sealing door 3 form a closed cavity, a friction wear module, a PM2.5 sensor 4 and a spray head of an intelligent micro-lubricating system are arranged in the testing cavity 2, and an adjustable lubricant supply pipeline and an adjustable gas supply pipeline of the intelligent micro-lubricating system are positioned at the lower part of the testing machine shell 1.
The friction and wear module comprises a test block mounting assembly and a test ring mounting assembly which are vertically arranged, the test block mounting assembly comprises a closed linear module 5, a servo motor for driving the closed linear module and a test block fixing shaft 6 mounted on the closed linear module 5, and the test ring mounting assembly comprises a test ring fixing shaft 7 and a servo motor for driving the test ring fixing shaft to rotate. The test block fixing shaft 6 is perpendicular to the test ring fixing shaft 7, the force sensor 8 is installed on the test block fixing shaft 6, and the sealing ring 9 is sleeved on the test ring fixing shaft 7.
Preferably, there are two nozzles, namely a first nozzle B11 and a second nozzle B21, respectively installed at two sides of the upper part of the test chamber 2, namely two sides above the test block fixing shaft 6, so that the sprayed atomized trace lubricant is more uniform and can be filled in the test chamber more quickly.
the working flow of the ring block friction wear testing machine is as follows:
1) Respectively installing a test block and a test ring for testing on a test block fixing shaft 6 and a test ring fixing shaft 7, and closing the sealing door 3;
2) Starting the intelligent minimal quantity lubrication system, opening a two-position two-way electromagnetic valve, and starting the precise pneumatic pump;
3) Adjusting the corresponding electric control pressure reducing valve and the electric control throttle valve according to signals fed back by the pressure sensor and the flow sensor to enable the pressure and the flow of the gas and the lubricant liquid before mixing to reach preset values;
4) Judging whether the atomization degree of the trace lubricant in the test cavity reaches a preset value or not according to a signal of the PM2.5 sensor 4;
5) When the atomization degree reaches a preset value, a servo motor for driving the closed linear module is started, and the closed linear module drives the test block to press the test ring;
6) judging whether the forward pressure of the test block and the test ring reaches a preset value according to a signal fed back by the force sensor 8;
7) When the forward pressure reaches a preset value, a servo motor for driving the test ring fixing shaft to rotate is started, the servo motor drives the test ring to rotate, the test block and the test ring generate friction, and a force sensor records the friction force;
8) The test ring rotation time reaches the preset time, and the gas pressure and flow, the lubricant liquid pressure and signal, the test block test ring forward pressure and friction force and the PM2.5 sensor signal in the test process are recorded;
9) The system is shut down.
different tests can be realized by setting different parameters according to actual test purposes. Such as the research on the friction and wear mechanism of materials under the condition of minimal lubrication, the mechanism of minimal lubrication, and the like. The ring block friction wear testing machine provided by the invention adopts the intelligent minimal quantity lubrication system, can judge the atomization degree of the lubricant in the test wall body through the signal of the PM2.5 sensor in the test cavity, and further feeds back the atomization degree to the adjustable lubricant supply pipeline and the adjustable gas supply pipeline, so that the intelligent adjustment of the minimal quantity lubricant is realized, the mechanism of friction wear based on the minimal quantity lubrication condition can be researched, and the lubrication mechanism of the minimal quantity lubrication in different atomization states can also be researched.
The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention.
Claims (10)
1. An intelligence minimal quantity lubrication system which characterized in that: the adjustable lubricant supply pipeline and the adjustable gas supply pipeline are connected with the spray head through an oil-gas mixer, and the adjustable gas supply pipeline provides power for the adjustable lubricant supply pipeline through a pneumatic frequency generator.
2. The intelligent minimal quantity lubrication system according to claim 1, wherein: the adjustable gas supply pipeline comprises an air compressor, a gas source processor, a two-position two-way electromagnetic valve and a flow divider which are sequentially connected through pipelines, a first passage of the flow divider is connected with a pneumatic frequency generator, and a second passage of the flow divider is connected with an oil-gas mixer through a pressure reducing valve and a throttle valve.
3. the intelligent minimal quantity lubrication system according to claim 2, wherein: the adjustable lubricant supply pipeline comprises an oil tank and a pneumatic pump which are sequentially connected through pipelines, the pneumatic pump is connected with an oil-gas mixer through a pressure reducing valve and a throttle valve, and the pneumatic frequency generator is in power connection with the pneumatic pump.
4. The intelligent minimal quantity lubrication system according to claim 3, wherein: and the rear parts of the pressure reducing valve and the throttle valve are respectively connected with a pressure sensor and a flow sensor.
5. The intelligent minimal quantity lubrication system according to claim 3, wherein: the pressure reducing valve and the throttle valve are respectively an electric control pressure reducing valve and an electric control throttle valve.
6. The utility model provides a ring piece friction wear testing machine which characterized in that: comprising an intelligent minimal quantity lubrication system according to any one of claims 1 to 5.
7. the ring block friction wear tester of claim 6, wherein: still include the testing machine casing, experimental cavity has been seted up on the testing machine casing, be provided with friction wear module and PM2.5 sensor in the experimental cavity, experimental cavity still is provided with the sealing door.
8. The ring block friction wear tester of claim 7, wherein: the friction and wear module comprises a test block mounting assembly and a test ring mounting assembly which are vertically arranged, the test block mounting assembly comprises a closed linear module, a servo motor for driving the closed linear module and a test block fixing shaft mounted on the closed linear module, and the test ring mounting assembly comprises a test ring fixing shaft and a servo motor for driving the test ring fixing shaft to rotate.
9. the ring block friction wear tester of claim 8, wherein: the test block fixing shaft is perpendicular to the test ring fixing shaft, the force sensor is installed on the test block fixing shaft, and the sealing ring is sleeved on the test ring fixing shaft.
10. The ring block friction wear tester of claim 7, wherein: the two spray heads are respectively arranged on two sides of the upper part of the test cavity.
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