CN219084720U - Grease lubricating film friction measuring table - Google Patents
Grease lubricating film friction measuring table Download PDFInfo
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- CN219084720U CN219084720U CN202222667095.5U CN202222667095U CN219084720U CN 219084720 U CN219084720 U CN 219084720U CN 202222667095 U CN202222667095 U CN 202222667095U CN 219084720 U CN219084720 U CN 219084720U
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- 239000004519 grease Substances 0.000 title claims abstract description 14
- 230000001050 lubricating effect Effects 0.000 title claims description 8
- 238000005259 measurement Methods 0.000 claims abstract description 74
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 238000003556 assay Methods 0.000 claims 1
- 238000005461 lubrication Methods 0.000 abstract description 13
- 238000005299 abrasion Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 81
- 238000001514 detection method Methods 0.000 description 49
- 230000000694 effects Effects 0.000 description 11
- 239000000126 substance Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 230000003068 static effect Effects 0.000 description 5
- 230000003746 surface roughness Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000691 measurement method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
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Abstract
The utility model discloses a grease lubrication film friction measuring table, and mainly relates to the field of oil film friction measuring equipment. Comprises a supporting and adjusting platform and a friction measuring platform; the support adjusting platform is arranged below the friction measuring platform and is connected with a multi-degree-of-freedom adjusting mechanism, and the inclination angle of the friction measuring platform is adjusted through the multi-degree-of-freedom adjusting mechanism; the friction measuring platform is of a disc-shaped structure, and measuring impact positions are arranged on the outer side of the friction measuring platform in a circumferential array. The utility model has the beneficial effects that: the friction measurement can be carried out on the workpiece before and after the workpiece is covered with the oil film, so that lubrication conditions of the workpiece before and after the oil film is covered are shown, whether the covered oil film meets the standard in the application environment of the workpiece is judged, and the workpiece can be ensured to work in a low-abrasion state subsequently.
Description
Technical Field
The utility model relates to the field of oil film friction measurement equipment, in particular to a grease lubrication film friction measurement table.
Background
The main lubrication mode in the workpiece installation at present is to lubricate through an oil film, and the types of the oil films include a physical oil film and a chemical oil film, namely, a compound with lubrication effect is generated by the adhesion of a lubricant to the surface of a workpiece or the reaction between the lubricant and the workpiece, so that the surface of the workpiece is lubricated. For the specific lubrication effect detection of the oil film, the friction detection needs to be ensured not to be influenced by the external environment as much as possible, but when the friction detection of the object is performed, the phenomenon of the object sliding in a clamping manner when the object slides in an initial state is caused because the static friction force is larger than the sliding friction force, so that the final detection result is influenced. In addition, during the measurement, the lubrication effect of the oil film is mainly measured, so that when the friction measurement is performed on the workpiece before and after the oil film is covered, the variables are required to be ensured not to change, such as the accurate initial position of the workpiece sliding down, the slope inclination angle for ensuring the normal sliding down of the workpiece, and the like. Therefore, a grease lubrication film friction measuring table is designed, sliding friction measurement is conducted on workpieces before and after a workpiece oil film, and the influence of the oil film on the lubrication degree of the workpieces is judged so as to judge whether the property of the covered oil film meets the requirement of the application environment of the workpieces.
Disclosure of Invention
The utility model aims to provide a grease lubrication film friction measuring table which can be used for carrying out friction measurement on a workpiece before and after the workpiece is covered with an oil film, so that lubrication conditions of the workpiece before and after the oil film is covered are shown, whether the covered oil film meets the standard in the application environment of the workpiece is judged, and the workpiece is ensured to work in a low-abrasion state in the follow-up process.
The utility model aims to achieve the aim, and the aim is achieved by the following technical scheme:
a friction measuring table for a grease lubricating film comprises a supporting and adjusting platform and a friction measuring platform;
the support adjusting platform is arranged below the friction measuring platform and is connected with a multi-degree-of-freedom adjusting mechanism, and the inclination angle of the friction measuring platform is adjusted through the multi-degree-of-freedom adjusting mechanism;
the friction measuring platform is of a disc-shaped structure, and measuring impact positions are arranged on the outer side of the friction measuring platform in a circumferential array.
The friction measuring platform is an air guide rail platform, air holes are uniformly distributed on the measuring end face of the friction measuring platform at equal intervals, an air pump is connected to the position of an air inlet arranged below the friction measuring platform, and air is conveyed into the friction measuring platform through the air pump.
The friction measuring platform is internally provided with a balance net, and the balance net is tightly attached to the inner wall inside the friction measuring platform.
The measuring impact position is a strain gauge, a plurality of strain gauges are arranged at the inner end surface position of the friction measuring platform in a circumferential array mode, and each strain gauge is connected with the PLC integrated main board.
The multi-degree-of-freedom adjusting mechanism comprises a plurality of adjusting oil cylinders, two end parts of two adjacent adjusting oil cylinders are correspondingly arranged, and two ends of each adjusting oil cylinder are respectively and universally connected with the friction measuring platform and the supporting adjusting platform.
Compared with the prior art, the utility model has the beneficial effects that:
when the device is arranged, the supporting and adjusting platform and the friction measuring platform are arranged, and after a workpiece to be detected is placed on the friction measuring platform, the inclination angle of the friction measuring platform is adjusted by the multi-degree-of-freedom adjusting mechanism connected with the supporting and adjusting platform; the time required before and after the workpiece slides down can be detected by the measuring impact energy arranged on the friction measuring platform, and further the friction measuring information when the workpiece slides down can be calculated. And when the friction measuring platform is arranged, the friction measuring platform is arranged as an air guide rail platform, so that the influence of static friction force on the workpiece sliding down is avoided.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model.
Fig. 2 is a schematic diagram of the structure of the present utility model.
FIG. 3 is a schematic view of the internal part of the friction measuring platform according to the present utility model.
FIG. 4 is a cross-sectional view of the friction measuring platform of the present utility model.
FIG. 5 is a schematic diagram of the force applied to a test workpiece on the friction measuring platform of the present utility model.
The reference numbers shown in the drawings:
1. supporting an adjusting platform; 2. a friction measurement platform; 3. a multi-degree-of-freedom adjusting mechanism; 4. measuring the impact position; 5. an air rail platform; 6. air holes; 7. a balancing net; 8. a strain gage; 9. and (5) adjusting the oil cylinder.
Detailed Description
The utility model will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present utility model and are not intended to limit the scope of the present utility model. Further, it will be understood that various changes or modifications may be made by those skilled in the art after reading the teachings of the utility model, and such equivalents are intended to fall within the scope of the utility model as defined herein.
Because the influence of the external environment and the workpiece on the friction coefficient needs to be considered when the friction coefficient measuring modes of different oil films are carried out, the measured oil film measuring coefficient is ensured to be more accurate; at the same time, the problems of the property of the oil film and the influence on the workpiece are also required to be considered, so the problems to be considered for the friction measurement operation are as follows:
1. because the friction coefficient exhibited is different for different workpieces even after the adhesion of the same oil film is performed, when friction measurement is performed on some heavier workpieces, the difference between the static friction force and the sliding friction force of the object is large, so that when the workpieces slide, a violent downward sliding occurs, and thus the workpieces may possibly slide downwards and simultaneously move in other directions, so that the detected data is not the most accurate measured data. In addition, when the workpiece is driven, the workpiece is directly driven to be in a motion state by the action of external force, and no obvious clamping phenomenon occurs, but the problem needs to be considered in friction measurement.
2. For oil films with different properties, the problem that the sliding surface of a workpiece is damaged before and after the oil film is smeared needs to be measured. The main influence on the workpiece is that the surface roughness of the workpiece changes, so that the surface roughness of the workpiece is changed after the workpiece is eroded by an oil film, and the friction coefficient of the oil film of the workpiece is changed. Because for the corrosion-resistant workpiece, even if the problem of adhesion of an oil film occurs in a longer time, the surface roughness of the workpiece is not greatly affected, so that the friction coefficient of the corrosion-resistant workpiece before and after the corrosion-resistant workpiece is not greatly changed; for the workpiece forming the chemical oil film, the main reason for forming the adhesion of the oil film is that the formation of the compound needs to be carried out between the workpiece and the surface of the workpiece, so that the surface roughness of the workpiece is influenced after the adhesion of the oil film, and the friction coefficient of the original workpiece is changed. After the chemical oil film is arranged, the change of friction factors of the oil films before and after the workpiece to the surface of the attached workpiece is required to be measured, so that the condition that the chemical oil film corrodes the surface of the original workpiece is judged.
The above problems and the design problems of the device mentioned below are considered by the influence factors of friction measurement and the specific use condition of the workpiece, and the specific structure of the device is as follows:
the utility model relates to a friction measuring table for a grease lubricating film, which comprises a main body structure, a friction measuring table and a measuring table, wherein the main body structure comprises a supporting and adjusting table 1 and a friction measuring table 2; the support adjustment platform 1 is arranged to support the friction measurement platform 2, and adjust the inclination angle of the friction measurement platform 2 while supporting, so that the symmetrical two outer end positions of the friction measurement platform 2 are not located on the same height, and the support adjustment platform 1 is connected with the multi-degree-of-freedom adjustment mechanism 3, and the inclination angle of the friction measurement platform 2 is adjusted through the multi-degree-of-freedom adjustment mechanism 3, so that the adjustment of the heights of the two end positions of the friction measurement platform 2 is met on each angle, and the requirement of the sliding height for friction measurement of workpieces is met. In the friction measuring platform 2, the workpiece is placed on the friction measuring platform 2 during operation, the inclination angle of the friction measuring platform 2 is adjusted by the multi-degree-of-freedom adjusting mechanism 3, and the friction force of the workpiece can be measured after adjustment. Specifically, the friction measuring platform 2 has a disc-shaped structure, and measuring impact positions 4 are arranged on the outer side of the friction measuring platform 2 in a circumferential array; after the friction measuring platform 2 is arranged in a disc-shaped structure, the distances from any position of the friction measuring platform 2 to the symmetrical positions are equal, so that the sliding distance of the workpiece is determined; when the measuring workpiece moves on the friction measuring platform 2, the measuring impact position 4 arranged outside the friction measuring platform 2 can measure the time required by sliding of an object, so that the final friction measuring data can be conveniently obtained. When the device is set, the terminal equipment of the whole device is also controlled by an integrated control system; the terminal equipment is controlled through the PLC integrated main board, so that various feedback data of each terminal equipment can be subjected to data processing and digital-to-analog conversion through the PLC integrated main board, and a designated signal is transmitted to the terminal equipment, and the operation steps of information feedback to equipment execution are achieved.
After the above configuration was set, the friction measurement method was analyzed as follows:
the conventional friction measurement mode using the device is that the height of the friction measurement platform 2 is adjusted through the multi-degree-of-freedom adjusting mechanism 3, so that the friction measurement platform 2 is in a certain angle state; placing a detection object into the friction measuring platform 2, enabling the detection object to be in contact with a measuring impact position 4 of the friction measuring platform 2, enabling the measuring impact position 4 to be in contact with the detection object, and transmitting detection information to the PLC integrated main board; after the object is loosened, the object falls along the inclined direction of the friction measuring platform 2 until the detected object impacts on the measuring impact position 4 at the symmetrical position with the object placing position, the measuring impact position 4 transmits the impact information of the detected object to the PLC integrated main board, and at the moment, the PLC integrated main board performs data processing to obtain the time required by acting force on the measuring impact position 4 at the symmetrical position; performing analytical calculations on the data obtained, i.e.
S＝1/2(gsinα-μgcosα)t2；
Here, S is the diameter of the friction measuring stage, gsin α - μgcos α is the acceleration in the direction of inclination of the friction measuring stage 2, and t is the time for the detection object to reach the bottom end position from the top end position of the friction measuring stage 2, so that the friction coefficient μ between the detection object and the measuring stage can be measured by the above. The above discussion makes it possible to understand the manner of measuring the friction coefficient, and it is needless to say that the measurement of the friction coefficient of an object to be detected in the present apparatus is mainly performed for the friction coefficient after oil film production to detect whether or not the oil film satisfies the set requirement, and further to obtain the friction measurement data after oil film application.
The following is a further explanation of the present device, and the following explanation is explained in terms of oil film friction measurement:
1. the specific structure of the measurement method of the friction measurement platform 2 at the time of friction measurement is explained:
first, a friction measurement operation is performed with respect to the friction coefficient of the physical oil film.
When the physical oil film is attached, the physical oil film is directly attached to the workpiece, and the simplest object oil film is to smear lubricating oil on the surface of the workpiece, so that the lubricating effect of the workpiece is achieved. In contrast, when the friction measuring stage 2 is provided, the physical oil film can be satisfactorily subjected to the friction measuring operation without providing the friction measuring stage 2 with any other structure. The measuring method is as follows:
s1, inputting inclination angle information to be held by a friction measurement platform 2 into a PLC integrated main board, enabling the PLC integrated main board to perform digital-to-analog conversion on the input inclination angle information, and controlling a multi-degree-of-freedom adjusting mechanism 3 to adjust the inclination angle of the friction measurement platform 2 so that the friction measurement platform 2 reaches a designated inclination angle position;
s2, placing a detection workpiece which is not coated with an oil film at the highest position of the inclination angle of the friction measuring platform 2, enabling the detection workpiece to be in contact with the measuring impact position 4, and enabling the contacted measuring impact position 4 to transmit contact information to the PLC integrated main board;
s3, after the detection workpiece is loosened, the detection workpiece falls along the friction measuring platform 2 until the detection workpiece contacts with the other detection impact position 4 after falling along the friction measuring platform 2, and the other detection impact position 4 transmits the detection information to the PLC integrated main board, so that the PLC integrated main board processes the information to obtain the time required by the detection workpiece to fall;
s4, calculating through S=1/2 (gsin alpha-mu gcos alpha) t2 to obtain a friction coefficient value when no object oil film is attached;
s5, placing the detection workpiece coated with the oil film at the highest position of the inclination angle of the friction measurement platform 2, enabling the detection workpiece to be in contact with the measurement impact position 4, enabling the contacted measurement impact position 4 to transmit contact information to the PLC integrated main board, and then carrying out the step S3;
s6, calculating to obtain a friction coefficient value when the object oil film is attached through S=1/2 (gsin alpha-mu gcos alpha) t2, comparing the front friction coefficient with the rear friction coefficient, and judging the influence of the physical oil film on the detection workpiece.
Second, a friction measurement operation is performed with respect to the friction coefficient of the chemical oil film.
The chemical oil film is formed by causing a certain chemical reaction between the oil film and the attached workpiece, so that the oil film is attached to the detection workpiece, and the step of performing the friction measurement is consistent with the object oil film measurement method. However, the chemical oil film cannot be treated on the wearing surface by a specific means such as ultrasonic cleaning with a solvent, and thus it is not practical to measure the friction coefficient after the removal of the chemical oil film. However, if there is a means for eliminating the compound formed on the oil film, the friction coefficient of the workpiece after the chemical oil film can be measured without damaging the substrate of the workpiece to be inspected. While the manner of testing after polishing the chemical oil film using the object method is not true, attention should be paid here.
Thirdly, the following description will be made on the problems and the structural arrangement in the measurement of the oil film friction coefficient.
(1) Because both the physical oil film and the chemical oil film are used, the friction measurement of the workpiece is carried out before the installation, and the lubrication effect of the oil film is judged by comparing the friction coefficient before and after the friction coefficient. The external influencing factors at the time of friction measurement by the contacted friction measuring platform 2 are different for different workpieces, and therefore this is also why the friction measurement is performed before the oil film is not covered. However, because there is a certain difference between the static friction force and the sliding friction force when the workpiece slides downward, the workpiece is detected to slide downward by a certain distance, and then continues to slide downward, especially for some workpieces with larger workpieces and larger friction coefficients, the final detection result is very easy to be inaccurate. Therefore, the friction measuring platform 2 is an air guide rail platform 5, air holes 6 are uniformly distributed on the measuring end surface of the friction measuring platform 2 at equal intervals, an air pump is connected to an air inlet position arranged below the friction measuring platform 2, and air is conveyed into the friction measuring platform 2 through the air pump; as shown in fig. 4 of the specification, after the air guide platform 5 is arranged, the air pump conveys air into the air guide platform 5, and the air flows out from the position of the air hole 6 formed in the air guide platform 5, so that acting force is generated on the detection workpiece on the air guide platform 5, and at the moment, the friction coefficient between the detection object and the inner end surface of the friction measurement platform 2 can be reduced, so that the conversion state from static friction force to sliding friction force is smaller when the detection object slides downwards along the friction measurement platform 2, the detection workpiece slides downwards more easily, and the problem of jamming does not occur when the detection workpiece slides downwards. Naturally, in the subsequent operation of friction measurement after oil film coverage, the air pump is required to maintain a certain power to convey air towards the air guide rail platform 5, so that the friction measurement after oil film coverage is realized by a controlled variable method; it should be noted here that the friction coefficient obtained before and after the measurement is not the friction coefficient in a real state, and the purpose is to perform the effect of the oil film coverage on the friction of the test workpiece, and to perform the front-rear comparison after obtaining the friction coefficient before and after the oil film coverage.
(2) Since the workpiece is in contact with the workpiece when the workpiece is assembled and used, and further in this state, the friction effect is present between the workpiece and the workpiece, it is necessary to simulate the influence of the friction effect generated when the workpiece is in contact with the workpiece when the measurement is performed. Therefore, after the friction measuring platform 2 is set as the air guide platform 5, the air pump not only can charge air into the air guide platform 5, but also can draw out air from the air guide platform 5, so that air above the air guide platform 5 enters the air guide platform 5 from the position of the air hole 6. After the detection workpiece is placed on the air guide rail platform 5, the air generates suction force on the detection workpiece on the air guide rail platform 5 at the moment, so that acting force between the detection workpiece and the friction measuring platform 2 is increased, and the specific friction condition when the workpiece is installed and used is simulated. Of course, the roughness of the workpiece contacted with the detected workpiece needs to be known for the suction power of the air pump, so that the air pump can perform suction operation on the detected workpiece with proper suction power, and the effect of simulating contact friction of the two workpieces is achieved; for the roughness of the contact workpiece, the surface roughness can be used for measurement, so that more accurate detection data can be obtained.
(3) Because the air pump is only connected with the air inlet arranged below the friction measuring platform 2 when the air pump conveys air towards the friction measuring platform 2 and performs air suction operation, the air pump can only perform air suction and air intake operation from the air inlet position. And a plurality of small holes are formed in the surface of the friction measuring platform 2, so that the air pump cannot ensure that the air flow in and out of each small hole is equal when the air pump pumps air and feeds air, and further the acting force born by the detection workpiece cannot be ensured to be in a uniform stress state at any position. For the above problems, a balance net 7 is arranged inside the friction measuring platform 2, and the balance net 7 is closely attached to the inner wall inside the friction measuring platform 2; because after setting up balanced net 7, the inside of balanced net 7 can separate quick through air rail platform 5 of air, and then make the air in the air rail platform 5 when passing through balanced net 7, can be dispersed to the inside marginal position of friction measurement platform 2 by balanced net 7, and then make the inside air of friction measurement platform 2 disperse by balanced net 7 after, see through balanced net 7 and follow the aperture outflow of friction measurement platform 2 to the gas flow is more even when realizing each aperture suction.
Fourth, explanation will be made with respect to a specific structural arrangement for determining the impact site 4.
Because the structural arrangement capable of meeting the arrangement requirement of the measuring impact position 4 is more, in order to achieve the optimal measuring effect, the device is provided with the measuring impact position 4 as the strain gauge 8, a plurality of the strain gauges 8 are arranged at the inner end surface position of the friction measuring platform 2 in a circumferential array, and each strain gauge 8 is connected with the PLC integrated main board. As shown in fig. 3 of the drawings, the volume of the strain gauge 8 is relatively small, which is relatively simple in the setting of strain changes, and the principal principle of the strain gauge 8 is that the resistance value of a conductor or semiconductor material changes correspondingly when it is mechanically deformed by external forces, which phenomenon is called "strain effect". Therefore, the strain gauge 8 can easily obtain the action information of the detection object when the action force is generated, when the strain gauge 8 receives the action force, the resistance value of the strain gauge 8 changes and the change information is transmitted to the PLC integrated main board, so that the PLC integrated main board performs digital-to-analog conversion on the resistance change information sent by the strain gauge 8 at the designated position, and the time required for the front and back detection of the falling of the workpiece along the friction measuring platform 2 is obtained. Of course, the above mentioned structure of the impact measuring position 4 is more, the strain gauge 8 is not used singly, for example, when friction measurement is performed on some large workpieces, impact with large acting force generated by contacting with the impact measuring position 4 may occur, and therefore, the pressure sensor with large bearing value needs to be arranged for meeting the measurement requirement of detecting the workpieces.
Fifth, explanation will be made on a specific structural arrangement of the multiple degree of freedom adjusting mechanism 3.
As shown in fig. 2 of the specification and the drawings, the multi-degree-of-freedom adjusting mechanism 3 comprises a plurality of adjusting oil cylinders 9, two ends of two adjacent adjusting oil cylinders 9 are correspondingly arranged, and two ends of the adjusting oil cylinders 9 are respectively and universally connected with the friction measuring platform 2 and the supporting adjusting platform 1. For the device, the friction measurement platform 2 needs to be ensured to be effectively driven by the multi-degree-of-freedom adjusting mechanism 3, so that the plurality of adjusting oil cylinders 9 are matched and arranged, two ends of each adjusting oil cylinder 9 are respectively and universally connected with the friction measurement platform 2 and the supporting adjusting platform 1, and further the two ends of each adjusting oil cylinder 9 can be universally rotated while the plurality of adjusting oil cylinders 9 stretch out and draw back, so that the multi-degree-of-freedom adjustment of the friction measurement platform 2 is realized. The most common is a step platform, which can accurately determine the cutting angle in a control platform, and particularly in some sea force effects, is a control operation platform with wide application. A locking member is provided on the friction measuring stage 2, and the position of the detection workpiece with respect to the friction measuring stage 2 is fixed by the locking member. The locking piece can lock the initial state of the detection workpiece on the friction measuring platform 2, so that the detection workpiece in the initial state is controlled; of course, the specific structural arrangement of the locking element is not particularly critical here, i.e. the detection workpiece can be fixed. In addition, in the friction measurement operation, the friction measurement operation step can be realized without providing the locking member, namely, manually pressing and placing.
A method of determining a device for determining a property of a lubricating film based on a friction determination method, comprising the steps of:
s1, inputting inclination angle information to be held by a friction measurement platform 2 into a PLC integrated main board, enabling the PLC integrated main board to perform digital-to-analog conversion on the input inclination angle information, and controlling a multi-degree-of-freedom adjusting mechanism 3 to adjust the inclination angle of the friction measurement platform 2 so that the friction measurement platform 2 reaches a designated inclination angle position;
s2, placing a detection workpiece which is not coated with an oil film at the highest position of the inclination angle of the friction measuring platform 2, enabling the detection workpiece to be in contact with the measuring impact position 4, and enabling the contacted measuring impact position 4 to transmit contact information to the PLC integrated main board;
s3, judging whether the air pump performs air suction or air discharge operation according to the specific conditions of the detected workpiece, so that the friction measuring platform 2 generates suction force or repulsive force on the detected workpiece to meet the working requirements of the air pump according to the specific conditions of the detected workpiece;
s4, after the detection workpiece is loosened, the detection workpiece falls along the friction measurement platform 2 until the detection workpiece contacts with another measurement impact position 4 after falling along the friction measurement platform 2, and the other measurement impact position 4 transmits measurement information to the PLC integrated main board, so that the PLC integrated main board processes the information to obtain the time required by the detection workpiece to fall;
s5, calculating by S=1/2 (gsin alpha-mu gcos alpha) t2 to obtain a friction coefficient value when the object oil film is not attached;
s6, placing the detection workpiece coated with the oil film at the highest position of the inclination angle of the friction measurement platform 2, enabling the detection workpiece to be in contact with the measurement impact position 4, enabling the contacted measurement impact position 4 to transmit contact information to the PLC integrated main board, and then carrying out the steps S2 and 3;
and S7, calculating to obtain a friction coefficient value when the object oil film is attached through S=1/2 (gsin alpha-mu gcos alpha) t2, comparing the front friction coefficient with the rear friction coefficient, and judging the influence of the physical oil film on the detection workpiece.
Therefore, the friction measuring table for the grease lubricating film can be used for carrying out friction measurement on the workpiece before and after the workpiece is covered with the oil film, so that the lubrication condition of the workpiece before and after the oil film is covered is shown, whether the covered oil film meets the standard in the application environment of the workpiece is judged, and the workpiece can be ensured to work in a low-abrasion state subsequently.
Claims (5)
1. A grease lubricating film friction measurement platform which is characterized in that: comprises a supporting and adjusting platform (1) and a friction measuring platform (2);
the support adjusting platform (1) is arranged below the friction measuring platform (2), the support adjusting platform (1) is connected with a multi-degree-of-freedom adjusting mechanism (3), and the inclination angle of the friction measuring platform (2) is adjusted through the multi-degree-of-freedom adjusting mechanism (3);
the friction measuring platform (2) is of a disc-shaped structure, and measuring impact positions (4) are arranged on the outer side of the friction measuring platform (2) in a circumferential array.
2. The grease film tribometry station of claim 1, wherein: the friction measurement platform (2) is an air guide rail platform (5), air holes (6) are uniformly distributed on the measurement end face of the friction measurement platform (2) at equal intervals, an air pump is connected to an air inlet arranged below the friction measurement platform (2), and air is conveyed into the friction measurement platform (2) through the air pump.
3. The grease film tribometry station of claim 2, wherein: the friction measuring platform (2) is internally provided with a balance net (7), and the balance net (7) is tightly attached to the inner wall inside the friction measuring platform (2).
4. A grease film tribological assay table according to claim 1 or 3, characterized in that: the measuring impact position (4) is a strain gauge (8), a plurality of strain gauges (8) are arranged at the inner end surface position of the friction measuring platform (2) in a circumferential array mode, and each strain gauge (8) is connected with the PLC integrated main board.
5. The grease film tribometry station of claim 1, wherein: the multi-degree-of-freedom adjusting mechanism (3) comprises a plurality of adjusting oil cylinders (9), two ends of two adjacent adjusting oil cylinders (9) are correspondingly arranged, and two ends of each adjusting oil cylinder (9) are respectively and universally connected with the friction measuring platform (2) and the supporting adjusting platform (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222667095.5U CN219084720U (en) | 2022-10-10 | 2022-10-10 | Grease lubricating film friction measuring table |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222667095.5U CN219084720U (en) | 2022-10-10 | 2022-10-10 | Grease lubricating film friction measuring table |
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| Publication Number | Publication Date |
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| CN219084720U true CN219084720U (en) | 2023-05-26 |
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| CN202222667095.5U Active CN219084720U (en) | 2022-10-10 | 2022-10-10 | Grease lubricating film friction measuring table |
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