CN105067467B - A kind of joint curved surface faying face friction and wear characteristic test device and test method - Google Patents

Abstract

A test device and test method for the friction and wear characteristics of joint surfaces of joint surfaces. The test device includes a friction test device and a signal acquisition, analysis and processing system; Power system composition. The friction and wear characteristics test of the joint surface of the joint surface adopts the structural design of variable loading load, and the torque signal during the rotation process is detected by the sensor to obtain the friction and wear characteristics of the joint surface of the joint surface, which is suitable for comparative study of the joint surface joint of different materials The friction and wear characteristics of the surface. It adopts interchangeable parts to be tested, and the same test bench can measure the friction and wear characteristics of joint surfaces of different materials, which improves the utilization rate of the test bench, and can intuitively obtain the magnitude of the loading force, which is very important for engineering practice The friction and wear characteristics of the joint surface of the middle joint surface have a good guiding significance.

Description

A test device and test method for the friction and wear characteristics of joint surfaces of joint surfaces

technical field

The present invention designs the friction and wear characteristic test of the joint curved surface joint surface, adopts the structural design of variable loading load, and detects the torque signal during the rotation process through the sensor to obtain the friction and wear characteristics of the curved surface joint surface, which is suitable for comparative study of different materials The invention relates to the friction and wear characteristics of joint surfaces of joint surfaces, belonging to the technical field of friction and wear measurement of joint surfaces of curved surfaces.

Background technique

With the development of industrial technology to a higher level, the requirements for the precision and reliability of mechanical equipment are getting higher and higher. At the same time, the exploration of various new materials is also being carried out continuously. The joint surface widely exists in various mechanical mechanisms and is one of the most important components in mechanical equipment. The friction and wear of the joint surface of a new material joint surface The characteristics have certain guiding significance for exploring the reliability of the whole device.

At present, curved joint surfaces widely exist in various mechanical structures, such as spherical joints in mechanisms, bearing rollers, etc. For curved joint surfaces made of different materials, it is necessary to obtain their friction and wear characteristics, and through comparison The friction and wear properties of the joint surfaces of different materials provide guidance for the material selection of joint surfaces in practical applications, but there is no solution to such problems in engineering applications at present. The traditional curved surface bonding surface generally uses several specific known materials, and the evaluation of its friction and wear characteristics is often based on empirical values. There is no specific test equipment for quantitative testing, resulting in the actual friction and wear of the bonding surface and reliability. The estimated value is inaccurate, resulting in equipment loss; in addition, although some test benches can easily measure the friction performance of curved surfaces, the equipment is too simple, the data is not reliable, and there is no good interchangeability, that is, the same test bench cannot test The friction and wear characteristics of the joint surfaces of different materials lead to problems such as high cost of the test bench and low reuse rate.

Therefore, it is very meaningful to find a test device that can be accurate, has good interchangeability, and can realize the same test bench to test the friction and wear characteristics of curved surface joint surfaces of different materials.

Contents of the invention

The device adopts interchangeable test pieces, and the same test bench can measure the friction and wear characteristics of joint surfaces of different materials, which improves the utilization rate of the test bench. The test bench can apply loads of different sizes, and can be visualized The size of the loading force can be obtained, the device has a simple structure, is easy to operate, and has strong reliability, which has a good guiding significance for the friction and wear characteristics of the joint surface of the joint surface in engineering practice.

A test device for friction and wear characteristics of joint surfaces of joint surfaces, the test device includes a friction test device and a signal acquisition analysis and processing system; the friction test device consists of a loading system, a test joint surface system, a guide support system, a signal detection system, a support Power system composition.

The loading system consists of loading bolt A (4), loading bolt B (28), loading nut A (3), loading nut B (6), loading rail A (2), loading rail B (5), loading support (7 ), spring seat B (8), spring seat A (12), loading spring (27), mandrel nut (34) and loading mandrel (35); loading nut A (3) and loading nut B (6) The center of the loading mandrel (35) is diagonally symmetrically arranged on the loading support (7); the other diagonal of the loading support (7) is provided with threaded holes, loading bolt A (4) and loading bolt B (28) is screwed into the threaded hole and loads the friction test device; the loading guide rail A (2) and the loading guide rail B (5) are diagonally symmetrically arranged on the loading support (7) with respect to the center of the loading mandrel (35) and a light hole is provided at the corresponding position of the loading support (7), and it is fixed on the loading support (7) through the loading nut A (3) and the loading nut B (6); the spring seat A (12 ) and the spring seat B (8) are placed on the loading guide rail A (2) and loading guide rail B (5) respectively through the shaft hole, and can slide along the loading guide rail A (2) and loading guide rail B (5) ; The loading mandrel (35) is fixed at the central position of the spring seat A (12) through the mandrel nut (34), the loading spring (27) is sleeved on the loading mandrel (35), and placed on the spring seat A (12 ) and the spring seat B (8); by screwing in the loading bolt A (4) and the loading bolt B (28) to compress the loading spring (27), the loading force of the loading spring (27) is transferred to the spring seat B (8 ), so as to achieve the purpose of loading.

The test joint surface system consists of guide rail support A (10), guide rail support B (26), guide rail A (11), guide rail B (24), guide rail nut A (9), guide rail nut B (25), lower bridge plate (13), shaft (14), screw (32) and the piece to be tested (33); the guide rail A (11) is connected on the guide rail support A (10) through the guide rail nut A (9); the guide rail B (24) Connect on the guide rail support B (26) through the guide rail nut B (25), and the lower bridge plate (13) is connected with the guide rail A (11) and the guide rail B (24) through the shaft hole, so that the lower bridge plate (13) along the Guide rail A (11) and guide rail B (24) slide freely; there is an arc-shaped ball socket at the center of the lower bridge plate (13), the radius of which is the same as that of the test piece (33); the loading force of the loading system Make the piece to be tested (33) fit closely with the arc-shaped ball socket at the center of the lower bridge plate (13), and the piece to be tested (33) is connected and fixed with the shaft (14) by radial screws (32). The test piece (33) is a part with good interchangeability, and the test pieces (33) of different materials can be tested separately to obtain test data under different working conditions.

The guide support system is composed of bearing seat (15), bearing A (29), coupling D (23), shaft sleeve (30) and bearing B (31); one side of the bearing seat (15) is provided with a shaft shoulder, The outer ring of bearing B (31) is on the shaft shoulder, bearing B (31) and bearing A (29) are arranged parallel to each other, and the distance between bearing B (31) and bearing A (29) is the same as that of the shaft sleeve (30) The cross-sectional dimensions are equal, the bushing (30) is set between the bearing A (29) and the bearing B (31), the length of the bushing (30) should be at least three times the thickness of the bearing A (29), so that the bearing A ( The inner ring of 29) and the inner ring of bearing B (31) respectively stand on the shaft sleeve (30); when installing, pass the shaft (14) through bearing A (29), shaft sleeve (30), and bearing B in sequence (31), the shaft shoulder of the shaft (14) is pushed against the inner ring of the bearing A (29), and the shaft (14) and the shaft coupling D (23) are connected by a single key.

The signal detection system consists of a coupling C (22), a dynamic torque sensor (16), a sensor pad (21) and a coupling A (17); the coupling C (22) is connected to the dynamic torque sensor ( The output shaft on one side of 16) is connected, and the coupling A (17) is connected to the output shaft on the other side of the dynamic torque sensor (16) through a single key, and the sensor pad (21) is fixed to the dynamic torque sensor (16) by bolts. ), realize the concentricity of the output shaft of the dynamic torque sensor (16) and the shaft (14) by adjusting the thickness of the sensor pad (21).

The supporting power system is composed of the lower base plate (1), the motor base (18), the coupling B (20) and the motor (19); the motor (19) cooperates with the motor base (18) through the end flange, and the bolt The two are fixed, and the shaft coupling B (20) is connected with the output shaft of the motor (19) by a single key.

The lower base plate (1) is the supporting frame of the whole test system. The loading system is connected to the left side of the lower base plate (1) by bolts, and the bearing seat (15) is connected to the lower base plate (1) by bolts. The distance between the system and the lower bridge plate (13) and the shaft (14) is equivalent, that is, the shaft (14) is in close contact with the arc-shaped ball socket of the lower bridge plate (13) under no-load conditions, and the bearing seat ( 15) on the right side, the sensor spacer (21) is connected to the lower base plate (1) by bolts, and its installation position is appropriate to connect the coupling C (22) with the coupling D (23). The seat (18) is connected to the far right side of the lower base plate (1) through bolts, and its installation position is suitable for connecting the coupling A (17) with the coupling B (20). By adjusting the motor seat (18) , sensor pad (21), bearing seat (15), guide rail support A (10), guide rail support B (26), and the position of the loading support (7), to ensure the output shaft and dynamic torque of the motor (19) The output shaft of the sensor (16), the shaft (14) and the arc-shaped ball socket of the lower bridge plate (13) are placed on the same horizontal line.

Since the stiffness of the loading spring (27) is known, the loading force of the loading system can be obtained by measuring the distance change value before and after loading between the spring seat A (12) and the spring seat B (8) to obtain the specific loading force .

When the loading system is loading, the loading bolt A (4) and the loading bolt B (28) should be tightened evenly at the same time to ensure that the spring seat B (8) slides horizontally on the loading guide rail A (2) and the loading guide rail B (5) , no tilt occurs.

A test device for the friction and wear characteristics of joint surfaces. The transmission process of the loading force of the device is as follows: when the loading bolt A (4) and the loading bolt B (28) are screwed in, the spring seat B (8) will be pushed to move and compress the loading spring (27), so that the loading force is transmitted to the spring seat A (12) through the loading spring (27), and the spring seat A (12) transmits the loading force to the joint surface of the joint surface by contacting the lower bridge plate (13), and Continue to transfer to the shaft (14), bearing A (29), bushing (30), bearing B (31) in turn to the right, and finally transfer to the bearing seat (15), unload the loading force to the lower base plate (1), During the whole loading process, the dynamic torque sensor (16) and the motor (19) do not bear axial force, thereby prolonging the service life of both.

In the signal acquisition, analysis and processing system, the computer E1 issues work instructions, which are output to the driver E3 through the acquisition card E2, and the driver E3 processes the received signal and outputs it to the motor (19), at this time the motor (19) runs at a specified speed , the whole test device is loaded through the loading system, and the size of the loading force is manually input into the computer E1, and the dynamic torque sensor (16) transmits the measured signal to the computer E1 through the acquisition card E2, and the computer E1 compares the torque signal, The motor speed signal and the magnitude of the loading force are integrated, and the magnitude of the torque under different loads and speeds is drawn to provide data for analyzing the friction and wear characteristics of the joint surface.

A method for testing the friction and wear characteristics of a joint surface of an articular surface with a device for testing the friction and wear characteristics of a joint surface, the method comprising the following steps,

Step1. Process the material to be tested into a standard test piece (33). If the test needs to be carried out in an oil-lubricated state, it is necessary to add lubricating oil to the central oil storage hole of the test piece (33) made of porous oil-containing material, and then statically Leave it for a period of time until the oil penetrates to the outer surface. If the test is carried out in a non-oil-immersed state, this step can be omitted;

step2. Fasten the test piece (33) to the shaft (14) through the screw (32), and connect the curved outer surface of the test piece (33) to the curved ball socket at the center of the lower bridge plate (13) Clean the inner surface to avoid debris;

Step3. Slide the lower bridge plate (13) to the right on the guide rail A (11) and guide rail B (24), so that the arc-shaped ball socket is in full contact with the outer surface of the test piece (33);

step4. Turn on the power supply, and the computer E1 gives instructions to make the motor (19) drive the system to run at a given speed;

step5. Simultaneously and evenly tighten the loading bolts A (4) and loading bolts B (28), load the system from small to large, and when the system is stable, input the value of the loading force into the computer E1, and from the computer The size of the torque obtained in E1;

step6. Repeat the previous step to change different loading forces to obtain several sets of different curves;

step7. The multiple sets of curves drawn by the computer can provide data support for the analysis of the friction and wear characteristics of the curved surface joint surface of this material.

Compared with the prior art, the present invention has the following advantages.

1. The structure of the device is simple, the measurement method is simple and easy, the cost of the device is low, and it is very economical.

2. The dynamic torque sensor, data acquisition card and other related components selected in this device are very mature products on the market. They have good applicability, are easy to maintain, and have low requirements for the use environment. They are sensors commonly used in industrial production. .

3. For measuring the friction and wear characteristics of the curved surfaces of different materials, it is only necessary to replace the test piece, which improves the utilization rate of the same test bench.

4. The loading system of this device adopts the design method of spring, which avoids the problem of small stroke and large rigidity of direct bolt loading, and adopts the method of high rigidity spring, which can be loaded uniformly and conveniently.

5. The test bench can test the friction and wear characteristics of the joint surface of the joint surface in the oil-lubricated state and the non-oil-lubricated state respectively, which has good versatility.

6. In the device, the loading force is finally unloaded to the lower base plate, and the sensor and motor shaft do not bear the axial force, thereby increasing the service life of the motor and sensor.

7. In the loading system, the loading force can be intuitively measured according to the positions of the two spring seats.

Therefore, the device for testing the friction and wear characteristics of joint surfaces of joint surfaces of the present invention solves the problems currently existing in the friction and wear tests of joint surfaces of joint surfaces, and the application of this device can more conveniently and accurately measure the friction of joint surfaces of joint surfaces of different materials wear characteristics, and its operation is simple and easy, and the data is intuitive and reliable.

Description of drawings

Figure 1 is the overall structure diagram of the measuring device;

Fig. 2 is a schematic structural diagram of the loading system;

Fig. 3 is the schematic diagram of guide rail and guide rail support;

Figure 4 is a schematic diagram of the connection between the lower bridge plate and the curved ball socket of the test piece;

Figure 5 is a schematic diagram of the connection between the shaft and the piece to be tested;

Figure 6 is a half-sectional view of the guide support system;

Figure 7 is a block diagram of the data acquisition, analysis and processing system.

In the figure: 1. Lower bottom plate, 2. Loading guide rail A, 3. Loading nut A, 4. Loading bolt A, 5. Loading guide rail B, 6. Loading nut B, 7. Loading support, 8. Spring seat B, 9. Guide rail nut A, 10. Guide rail support A, 11. Guide rail A, 12. Spring seat A, 13. Lower bridge plate, 14. Shaft, 15. Bearing seat, 16. Dynamic torque sensor, 17. Coupling A, 18. Motor seat, 19. Motor, 20. Coupling B, 21. Sensor spacer, 22. Coupling C, 23. Coupling D, 24. Guide rail B, 25, Guide rail nut B, 26 , guide rail support B, 27, loading spring, 28, loading bolt B, 29, bearing A, 30, shaft sleeve, 31, bearing B, 32, screw, 33, test piece, 34, mandrel nut, 35, Load the mandrel.

Detailed ways

Below in conjunction with accompanying drawing 1～Fig. 7 specific embodiment of the present invention is described further:

A test device for friction and wear characteristics of joint surfaces of joint surfaces, the test device includes a friction test device and a signal acquisition analysis and processing system; the friction test device consists of a loading system, a test joint surface system, a guide support system, a signal detection system, a support Power system composition.

The loading system consists of loading bolt A (4), loading bolt B (28), loading nut A (3), loading nut B (6), loading rail A (2), loading rail B (5), loading support (7 ), spring seat B (8), spring seat A (12), loading spring (27), mandrel nut (34) and loading mandrel (35); loading nut A (3) and loading nut B (6) The center of the loading mandrel (35) is diagonally symmetrically arranged on the loading support (7); the other diagonal of the loading support (7) is provided with threaded holes, loading bolt A (4) and loading bolt B (28) is screwed into the threaded hole and loads the friction test device; the loading guide rail A (2) and the loading guide rail B (5) are diagonally symmetrically arranged on the loading support (7) with respect to the center of the loading mandrel (35) and a light hole is provided at the corresponding position of the loading support (7), and it is fixed on the loading support (7) through the loading nut A (3) and the loading nut B (6); the spring seat A (12 ) and the spring seat B (8) are placed on the loading guide rail A (2) and loading guide rail B (5) respectively through the shaft hole, and can slide along the loading guide rail A (2) and loading guide rail B (5) ; The loading mandrel (35) is fixed at the central position of the spring seat A (12) through the mandrel nut (34), the loading spring (27) is sleeved on the loading mandrel (35), and placed on the spring seat A (12 ) and the spring seat B (8); by screwing in the loading bolt A (4) and the loading bolt B (28) to compress the loading spring (27), the loading force of the loading spring (27) is transferred to the spring seat B (8 ), so as to achieve the purpose of loading.

The test joint surface system consists of guide rail support A (10), guide rail support B (26), guide rail A (11), guide rail B (24), guide rail nut A (9), guide rail nut B (25), lower bridge plate (13), shaft (14), screw (32) and the piece to be tested (33); the guide rail A (11) is connected on the guide rail support A (10) through the guide rail nut A (9); the guide rail B (24) Connect on the guide rail support B (26) through the guide rail nut B (25), and the lower bridge plate (13) is connected with the guide rail A (11) and the guide rail B (24) through the shaft hole, so that the lower bridge plate (13) along the Guide rail A (11) and guide rail B (24) slide freely; there is an arc-shaped ball socket at the center of the lower bridge plate (13), the radius of which is the same as that of the test piece (33); the loading force of the loading system Make the piece to be tested (33) fit closely with the arc-shaped ball socket at the center of the lower bridge plate (13), and the piece to be tested (33) is connected and fixed with the shaft (14) by radial screws (32). The test piece (33) is a part with good interchangeability, and the test pieces (33) of different materials can be tested separately to obtain test data under different working conditions.

The guide support system is composed of bearing seat (15), bearing A (29), coupling D (23), shaft sleeve (30) and bearing B (31); one side of the bearing seat (15) is provided with a shaft shoulder, The outer ring of bearing B (31) is on the shaft shoulder, bearing B (31) and bearing A (29) are arranged parallel to each other, and the distance between bearing B (31) and bearing A (29) is the same as that of the shaft sleeve (30) The cross-sectional dimensions are equal, the bushing (30) is set between the bearing A (29) and the bearing B (31), the length of the bushing (30) should be at least three times the thickness of the bearing A (29), so that the bearing A ( The inner ring of 29) and the inner ring of bearing B (31) respectively stand on the shaft sleeve (30); when installing, pass the shaft (14) through bearing A (29), shaft sleeve (30), and bearing B in sequence (31), the shaft shoulder of the shaft (14) is pushed against the inner ring of the bearing A (29), and the shaft (14) and the shaft coupling D (23) are connected by a single key.

The signal detection system consists of a coupling C (22), a dynamic torque sensor (16), a sensor pad (21) and a coupling A (17); the coupling C (22) is connected to the dynamic torque sensor ( The output shaft on one side of 16) is connected, and the coupling A (17) is connected to the output shaft on the other side of the dynamic torque sensor (16) through a single key, and the sensor pad (21) is fixed to the dynamic torque sensor (16) by bolts. ), realize the concentricity of the output shaft of the dynamic torque sensor (16) and the shaft (14) by adjusting the thickness of the sensor pad (21).

The supporting power system is composed of the lower base plate (1), the motor base (18), the coupling B (20) and the motor (19); the motor (19) cooperates with the motor base (18) through the end flange, and the bolt The two are fixed, and the shaft coupling B (20) is connected with the output shaft of the motor (19) by a single key.

The lower base plate (1) is the supporting frame of the whole test system. The loading system is connected to the left side of the lower base plate (1) by bolts, and the bearing seat (15) is connected to the lower base plate (1) by bolts. The distance between the system and the lower bridge plate (13) and the shaft (14) is equivalent, that is, the shaft (14) is in close contact with the arc-shaped ball socket of the lower bridge plate (13) under no-load conditions, and the bearing seat ( 15) on the right side, the sensor spacer (21) is connected to the lower base plate (1) by bolts, and its installation position is appropriate to connect the coupling C (22) with the coupling D (23). The seat (18) is connected to the far right side of the lower base plate (1) through bolts, and its installation position is suitable for connecting the coupling A (17) with the coupling B (20). By adjusting the motor seat (18) , sensor pad (21), bearing seat (15), guide rail support A (10), guide rail support B (26), and the position of the loading support (7), to ensure the output shaft and dynamic torque of the motor (19) The output shaft of the sensor (16), the shaft (14) and the arc-shaped ball socket of the lower bridge plate (13) are placed on the same horizontal line.

Since the stiffness of the loading spring (27) is known, the loading force of the loading system can be obtained by measuring the distance change value before and after loading between the spring seat A (12) and the spring seat B (8) to obtain the specific loading force .

When the loading system is loading, the loading bolt A (4) and the loading bolt B (28) should be tightened evenly at the same time to ensure that the spring seat B (8) slides horizontally on the loading guide rail A (2) and the loading guide rail B (5) , no tilt occurs.

A test device for the friction and wear characteristics of joint surfaces. The transmission process of the loading force of the device is as follows: when the loading bolt A (4) and the loading bolt B (28) are screwed in, the spring seat B (8) will be pushed to move and compress the loading spring (27), so that the loading force is transmitted to the spring seat A (12) through the loading spring (27), and the spring seat A (12) transmits the loading force to the joint surface of the joint surface by contacting the lower bridge plate (13), and Continue to transfer to the shaft (14), bearing A (29), bushing (30), bearing B (31) in turn to the right, and finally transfer to the bearing seat (15), unload the loading force to the lower base plate (1), During the whole loading process, the dynamic torque sensor (16) and the motor (19) do not bear axial force, thereby prolonging the service life of both.

In the signal acquisition, analysis and processing system, the computer E1 issues work instructions, which are output to the driver E3 through the acquisition card E2, and the driver E3 processes the received signal and outputs it to the motor (19), at this time the motor (19) runs at a specified speed , the whole test device is loaded through the loading system, and the size of the loading force is manually input into the computer E1, and the dynamic torque sensor (16) transmits the measured signal to the computer E1 through the acquisition card E2, and the computer E1 compares the torque signal, The motor speed signal and the magnitude of the loading force are integrated, and the magnitude of the torque under different loads and speeds is drawn to provide data for analyzing the friction and wear characteristics of the joint surface.

A method for testing the friction and wear characteristics of a joint surface of an articular surface with a device for testing the friction and wear characteristics of a joint surface, the method comprising the following steps,

Step1. Process the material to be tested into a standard test piece (33). If the test needs to be carried out in an oil-lubricated state, it is necessary to add lubricating oil to the central oil storage hole of the test piece (33) made of porous oil-containing material, and then statically Leave it for a period of time until the oil penetrates to the outer surface. If the test is carried out in a non-oil-immersed state, this step can be omitted;

step2. Fasten the test piece (33) to the shaft (14) through the screw (32), and connect the curved outer surface of the test piece (33) to the curved ball socket at the center of the lower bridge plate (13) Clean the inner surface to avoid debris;

Step3. Slide the lower bridge plate (13) to the right on the guide rail A (11) and guide rail B (24), so that the arc-shaped ball socket is in full contact with the outer surface of the test piece (33);

step4. Turn on the power supply, and the computer E1 gives instructions to make the motor (19) drive the system to run at a given speed;

step5. Simultaneously and evenly tighten the loading bolts A (4) and loading bolts B (28), load the system from small to large, and when the system is stable, input the value of the loading force into the computer E1, and from the computer The size of the torque obtained in E1;

step6. Repeat the previous step to change different loading forces to obtain several sets of different curves;

step7. The multiple sets of curves drawn by the computer can provide data support for the analysis of the friction and wear characteristics of the curved surface joint surface of this material.

The above is only an example of the present invention, and the size and shape of the block to be tested can be appropriately changed to make it possible to measure the friction and wear characteristic parameters of other curved surface joint surfaces, or the drive motor can be replaced with other forms, as long as it can It only needs to provide the rotation power, and the test device and test method are similar to this example. As long as the mechanical structure design of the measuring device and the overall measurement principle are consistent with the description of the present invention, it should be regarded as included in the scope of the present invention.

Claims (2)

1. a kind of joint curved surface faying face friction and wear characteristic test device, it is characterised in that：The test device includes friction and surveys Trial assembly is put and signal processing and analysis processing system；The friction testing arrangement is by loading system, experiment with reference to plane system, guiding Support system, signal detection system, support dynamical system composition；

Loading system is by loading bolt A (4), loading bolt B (28), loading nut A (3), loading nut B (6), loading guide rail A (2), loading guide rail B (5), loading bearing (7), spring base B (8), spring base A (12), loading spring (27), spindle nut (34) It is formed with loading mandrel (35)；It is symmetrical in diagonal about loading mandrel (35) center to load nut A (3) and loading nut B (6) It is arranged on loading bearing (7)；Another diagonal for loading bearing (7) is equipped with threaded hole, loading bolt A (4) and loading spiral shell Bolt B (28) precession threaded hole simultaneously loads friction testing arrangement；Guide rail A (2) and loading guide rail B (5) is loaded about loading Mandrel (35) center is symmetrically arranged in diagonal on loading bearing (7), and light is equipped on the corresponding position of loading bearing (7) Hole is fixed in by loading nut A (3) and loading nut B (6) on loading bearing (7)；Spring base A (12) and spring base B (8) it is placed on respectively by shaft hole matching on loading guide rail A (2), loading guide rail B (5), and energy edge loading guide rail A (2), Loading guide rail B (5) is slided；Loading mandrel (35) is fixed on the center of spring base A (12) by spindle nut (34) Place, loading spring (27) are sleeved on loading mandrel (35), are placed between spring base A (12) and spring base B (8)；Pass through precession Loading bolt A (4) and loading bolt B (28) compression-loaded spring (27), spring is transmitted to by the loading force of loading spring (27) Seat B (8), so as to fulfill the purpose of loading；

Experiment combines plane system by guide rail bearing A (10), guide rail bearing B (26), guide rail A (11), guide rail B (24), guide rail nut A (9), guide rail nut B (25), lower bridge plate (13), axis (14), screw (32) and test specimen to be measured (33) composition；Guide rail A (11) passes through Guide rail nut A (9) is connected on guide rail bearing A (10)；Guide rail B (24) is connected to guide rail bearing B by guide rail nut B (25) (26) on, lower bridge plate (13) is connect by shaft hole matching with guide rail A (11), guide rail B (24), makes lower bridge plate (13) along guide rail A (11), guide rail B (24) is free to slide；The center position of lower bridge plate (13) is opened there are one arc ball-and-socket, and radius size is with treating Test block (33) is identical；Test specimen to be measured (33) and the arc ball-and-socket at lower bridge plate (13) center are made by the loading force of loading system It fits closely, test specimen (33) to be measured is coupled and fixed with axis (14) by the screw (32) of radial direction, and test specimen (33) to be measured is Part with good interchangeability can test the test specimen to be measured (33) of not same material, obtain the examination under different operating modes respectively Test data；

Guide support system is made of bearing block (15), bearing A (29), shaft coupling D (23), axle sleeve (30) and bearing B (31)；Axis The side of bearing (15) is equipped with the shaft shoulder, and the outer ring of bearing B (31) is withstood at the shaft shoulder, and bearing B (31) and bearing A (29) is mutually parallel Arrangement, the distance between bearing B (31) and bearing A (29) are equal with the sectional dimension of axle sleeve (30), and axle sleeve (30) is arranged on axis It holds between A (29) and bearing B (31), the length of axle sleeve (30) should be at least three times of bearing A (29) thickness, make bearing A (29) The inner ring of inner ring and bearing B (31) withstand on respectively on axle sleeve (30)；During installation, axis (14) is sequentially passed through into bearing A (29), axis (30) and bearing B (31) are covered, the shaft shoulder of axis (14) is made to withstand on the inner ring of bearing A (29), axis (14) is logical with shaft coupling D (23) Cross singly-bound connection；

Signal detection system includes shaft coupling C (22), dynamic torque sensor (16), sensor cushion block (21) and shaft coupling A (17) it forms；Shaft coupling C (22) is coupled by singly-bound with the side output shaft of dynamic torque sensor (16), shaft coupling A (17) Coupled by singly-bound with the opposite side output shaft of dynamic torque sensor (16), sensor cushion block (21) is secured by bolts in Dynamic torque sensor (16) is realized in the lower section of dynamic torque sensor (16) by adjusting the thickness of sensor cushion block (21) Output shaft and axis (14) concentricity；

Support dynamical system is made of lower plate (1), motor cabinet (18), shaft coupling B (20) and motor (19)；Motor (19) passes through End flanges are coordinated with motor cabinet (18), and pass through bolt and the two is fixed, shaft coupling B (20) by singly-bound with The output shaft of motor (19) is coupled；

Lower plate (1) is the support frame of entire pilot system, and loading system is connected by bolts the left side of lower plate (1), Bearing block (15) is connected by bolts on lower plate (1), and mounting distance should be with loading system and lower bridge plate (13), axis (14) Distance it is suitable, i.e., can make just under no-load condition, the arc ball-and-socket of axis (14) and lower bridge plate (13) is in close contact, in bearing The right side of seat (15), sensor cushion block (21) is connected by bolts on lower plate (1), and installation site is just to make shaft coupling C (22) coupling with shaft coupling D (23) is advisable, and motor cabinet (18) is connected by bolts to the rightmost side of lower plate (1), installation Position is advisable so that shaft coupling A (17) is just made to couple with shaft coupling B (20), by regulation motor seat (18), sensor cushion block (21), Bearing block (15), guide rail bearing A (10), guide rail bearing B (26), the position for loading bearing (7), ensure the output of motor (19) Axis, dynamic torque sensor (16) output shaft, axis (14) and the arc ball-and-socket of lower bridge plate (13) are placed in same horizontal line；

Since the rigidity of loading spring (27) is known, so the loading force of loading system can be by measuring spring base A (12) size that front and rear distance change is worth to specific loading force is loaded between spring base B (8)；

Loading system should make loading bolt A (4) and loading bolt B (28) while uniformly tighten when being loaded, and ensure spring Seat B (8) is in loading guide rail A (2) and loading guide rail B (5) horizontal sliding, not run-off the straight；

The transmittance process of the device loading force is that loading bolt A (4) and loading bolt B (28), can push the spring seats by screwing in The mobile compression-loaded springs (27) of B (8), make loading force pass through loading spring (27) and are transmitted to spring base A (12), spring base A (12) by being contacted with lower bridge plate (13), loading force is transmitted at the curved surface faying face of joint, and continue to pass to successively to the right Axis (14), bearing A (29), axle sleeve (30), bearing B (31), are ultimately transferred to bearing block (15), loading force are unloaded to lower plate (1) on, in entire loading procedure, dynamic torque sensor (16) is not subject to axial force with motor (19), both so as to extend Service life；

In signal processing and analysis processing system, computer E1 sends out work order, is exported by capture card E2 and gives driver E3, drives The signal received is carried out processing output and gives motor (19) by dynamic device E3, and motor (19) is operated with specified speed at this time, is led to It crosses loading system to load entire experimental rig, and the size of loading force is manually entered into computer E1, dynamic is turned round The signal measured is transmitted to computer E1 by square sensor (16) by capture card E2, and computer E1 turns torque signal, motor Fast signal, loading force size are integrated, and draw the size of different loads and torque under rotating speed, are analysis of joint curved surface faying face Friction and wear characteristic provide data.

2. the joint curved surface faying face friction and wear characteristic test method carried out according to claim 1 described device, it is characterised in that： This method includes the following steps,

Step1., detected materials are processed into the test specimen to be measured (33) of standard, if experiment needs to carry out under oil lubrication state, It needs test specimen (33) center to be measured oil storage hole made of porous oil-containing material adding in lubricating oil, stands a period of time, until oil Outer surface is penetrated into, if tested under non-immersion oil state, this step can be omitted；

Step2. test specimen to be measured (33) is fastenedly connected by screw (32) on axis (14), and by the curved surface of test specimen to be measured (33) Outer surface is cleaned out with the cambered surface ball-and-socket inner surface at lower bridge plate (13) center, and sundries is avoided to exist；

Step3. lower bridge plate (13) on guide rail A (11) and guide rail B (24) is slid to the right, makes its cambered surface ball-and-socket and test specimen to be measured (33) outer surface completely attaches to；

Step4. power on, computer E1 provides instruction, makes motor (19) drive system with given rotation speed operation；

Step5. simultaneously and uniformly tighten loading bolt A (4) and loading bolt B (28), it is ascending that system is loaded, Until system is stablized, the numerical values recited of loading force is inputted into computer E1, and the big of torque is obtained from computer E1 It is small；

Step6. previous step is repeated, different loading forces is converted, obtains several groups of different curves；

Step7. the multigroup curve drawn by computer, you can the fretting wear of the curved surface faying face for this kind of material of analysis is special Property provide data support.