CN105067467B - A kind of joint curved surface faying face friction and wear characteristic test device and test method - Google Patents
A kind of joint curved surface faying face friction and wear characteristic test device and test method Download PDFInfo
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- CN105067467B CN105067467B CN201510531282.2A CN201510531282A CN105067467B CN 105067467 B CN105067467 B CN 105067467B CN 201510531282 A CN201510531282 A CN 201510531282A CN 105067467 B CN105067467 B CN 105067467B
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Abstract
A kind of joint curved surface faying face friction and wear characteristic test device and test method, the test device include friction testing arrangement and signal processing and analysis processing system；Friction testing arrangement is made of loading system, experiment with reference to plane system, guide support system, signal detection system, support dynamical system.Joint curved surface faying face friction and wear characteristic test, using the structure design of variable loaded load, its torque signal in rotation process is detected by sensor, the friction and wear characteristic of curved surface faying face is obtained, suitable for the friction and wear characteristic of the comparative study not joint curved surface faying face of same material.It uses the test specimen to be measured that can be interchanged, same testing stand can measure the friction and wear characteristic of the joint curved surface faying face of not same material, improve the utilization rate of testing stand, and the size of loading force can be intuitively obtained, there is good directive significance for the friction and wear characteristic of curved surface faying face in joint in engineering practice.
Description
Technical field
Present invention design joint curved surface faying face friction and wear characteristic test, using the structure design of variable loaded load,
Its torque signal in rotation process is detected by sensor, obtains the friction and wear characteristic of curved surface faying face, suitable for pair
Than the friction and wear characteristic for studying the not joint curved surface faying face of same material, belong to curved surface faying face fretting wear measuring technique
Field.
Background technology
As industrial technology is towards higher level development, the requirement to the precision and reliability of mechanical equipment is increasingly
It is high.Meanwhile the exploration of various new materials is also carried out constantly, faying face is widely present in all kinds of mechanical mechanisms, is
One of mostly important component part in mechanical equipment obtains the friction and wear characteristic of certain new material joint curved surface faying face
There is certain directive significance for the reliability for seeking whole device.
At present, curved surface faying face is widely present in various mechanical structures, such as hinged secondary, the bearing rolling of the spherical surface in mechanism
Son etc. for curved surface faying face made of not same material, needs to obtain its friction and wear characteristic, and different by comparing
The friction and wear behavior of material curved surface faying face is good and bad, and guidance is provided to the joint curved surface faying face material type selecting in practical application
Meaning, but there is no the solutions for such issues that be directed in engineer application at present.Traditional curved surface faying face generally uses
Specific several known materials, often based on experience value, specifically experiment is set neither one for the assessment of friction and wear characteristic
The standby test quantified to it causes the practical fretting wear of faying face and reliability inaccurate with discreet value, causes equipment
Loss；In addition, although some testing stands can easily measure the frictional behaviour of curved surface, equipment is too simple, and data are not
Reliably, and without good interchangeability, i.e., the joint curved surface faying face that same testing stand cannot test different materials rubs
Wearing character is wiped, leads to the of high cost of testing stand, the problems such as recycling rate of waterused is low.
Therefore, find it is a kind of can accurately, there is good interchangeability and can realize same test bed testing
The experimental rig of the curved surface faying face friction and wear characteristic of same material is not significantly.
Invention content
The present apparatus can measure the joint curved surface of not same material using the test specimen to be measured that can be interchanged, same testing stand
The friction and wear characteristic of faying face, improves the utilization rate of testing stand, and testing stand can apply different size of load, and can
Intuitively to obtain the size of loading force, apparatus structure is simple, easy to operation, highly reliable, bent for joint in engineering practice
The friction and wear characteristic of face faying face has good directive significance.
A kind of joint curved surface faying face friction and wear characteristic test device, the test device include friction testing arrangement and letter
Number collection analysis processing system；The friction testing arrangement by loading system, experiment with reference to plane system, guide support system,
Signal detection system, support dynamical system composition.
Loading system is led by loading bolt A (4), loading bolt B (28), loading nut A (3), loading nut B (6), loading
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 in diagonal that nut A (3) and loading nut B (6), which is loaded, about loading mandrel (35) center
It is symmetrically arranged on loading bearing (7)；Load bearing (7) another diagonal be equipped with threaded hole, loading bolt A (4) and plus
It carries bolt B (28) precession threaded hole and friction testing arrangement is loaded；Load guide rail A (2) with loading guide rail B (5) about
Loading mandrel (35) center is symmetrically arranged in diagonal on loading bearing (7), and is set on the corresponding position of loading bearing (7)
There is unthreaded hole, be fixed on loading bearing (7) by loading nut A (3) and loading nut B (6)；Spring base A (12) and bullet
Spring abutment B (8) is placed on by shaft hole matching respectively on loading guide rail A (2), loading guide rail B (5), and can be along 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)
At position, loading spring (27) is sleeved on loading mandrel (35), is 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), the loading force of loading spring (27) is transmitted to
Spring base 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)
It is connected on guide rail bearing A (10) by guide rail nut A (9)；Guide rail B (24) is connected to guide rail branch by guide rail nut B (25)
On seat B (26), 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 by bearing block (15), bearing A (29), shaft coupling D (23), axle sleeve (30) and bearing B (31) group
Into；The side of bearing block (15) is equipped with the shaft shoulder, and the outer ring of bearing B (31) is withstood at the shaft shoulder, bearing B (31) and bearing A (29) phase
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 set
It puts between bearing 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
The inner ring of A (29) is withstood on the inner ring of bearing B (31) on axle sleeve (30) respectively；During installation, axis (14) is sequentially passed through into bearing A
(29), axle sleeve (30) and bearing B (31), make the shaft shoulder of axis (14) withstand on the inner ring of bearing A (29), axis (14) and shaft coupling D
(23) coupled by singly-bound.
Signal detection system includes shaft coupling C (22), dynamic torque sensor (16), sensor cushion block (21) and shaft coupling
A (17) is formed；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)
Coordinated by end flanges and motor cabinet (18), and pass through bolt and the two is fixed, shaft coupling B (20) passes through list
Key is coupled with the output shaft of motor (19).
Lower plate (1) is the support frame of entire pilot system, and loading system is connected by bolts a left side for lower plate (1)
Side, bearing block (15) are connected by bolts on lower plate (1), and mounting distance should be with loading system and lower bridge plate (13), axis
(14) distance is suitable, i.e., can make just under no-load condition, and axis (14) and the arc ball-and-socket of lower bridge plate (13) are in close contact,
The right side of bearing block (15), sensor cushion block (21) are connected by bolts on lower plate (1), and installation site is just to make shaft coupling
Device C (22) couples with shaft coupling D (23) and is advisable, and motor cabinet (18) is connected by bolts to the rightmost side of lower plate (1), peace
Holding position is advisable so that shaft coupling A (17) is just made to couple with shaft coupling B (20), passes through regulation motor seat (18), sensor cushion block
(21), the position of bearing block (15), guide rail bearing A (10), guide rail bearing B (26), loading bearing (7), ensures motor (19)
Output shaft, 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
The size that front and rear distance change is worth to specific loading force is loaded between seat A (12) and 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 base B (8) is in loading guide rail A (2) and loading guide rail B (5) horizontal sliding, not run-off the straight.
A kind of joint curved surface faying face friction and wear characteristic test device, the transmittance process of the device loading force are to load
For bolt A (4) and loading bolt B (28) by screwing in, the mobile compression-loaded springs (27) of meeting push the spring seat B (8) make loading force
Spring base A (12) is transmitted to by loading spring (27), spring base A (12) passes loading force by being contacted with lower bridge plate (13)
It is delivered at the curved surface faying face of joint, and continues to pass to axis (14), bearing A (29), axle sleeve (30), bearing B (31) successively to the right,
Bearing block (15) is ultimately transferred to, loading force is unloaded on lower plate (1), in entire loading procedure, dynamic torque sensor
(16) axial force is not subject to motor (19), the service life both so as to extend.
In signal processing and analysis processing system, computer E1 sends out work order, is exported by capture card E2 to driver
The signal received is carried out processing output and gives motor (19) by E3, driver E3, and motor (19) is transported with specified speed at this time
Turn, entire experimental rig is loaded, and the size of loading force is manually entered into computer E1 by loading system, moved
The signal measured is transmitted to computer E1 by state torque sensor (16) by capture card E2, and computer E1 is to torque signal, electricity
Machine tach signal, loading force size are integrated, and draw the size of different loads and torque under rotating speed, are analysis of joint curved surface knot
The friction and wear characteristic in conjunction face provides data.
A kind of joint curved surface faying face friction and wear characteristic test device carries out joint curved surface faying face friction and wear characteristic
Test method, this method include the following steps,
Step1., detected materials are processed into the test specimen to be measured (33) of standard, if experiment need under oil lubrication state into
Row 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 penetrates into outer surface, if tested under non-immersion oil state, can omit this step；
Step2. test specimen to be measured (33) is fastenedly connected by screw (32) on axis (14), and by test specimen to be measured (33)
Curved 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) is slid to the right on guide rail A (11) and guide rail B (24), make its cambered surface ball-and-socket with it is to be measured
Test specimen (33) outer surface completely attaches to；
Step4. power on, computer E1 provides instruction, makes motor (19) that system be driven to be risen with given rotation speed operation
Come；
Step5. loading bolt A (4) and loading bolt B (28) are tightened simultaneously and uniformly, it is ascending to system progress
Loading, until system is stablized, the numerical values recited of loading force is inputted into computer E1, and obtain torque from computer E1
Size；
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 friction mill of the curved surface faying face for this kind of material of analysis
It damages characteristic and data support is provided.
Compared with prior art, the invention has the advantages that.
1st, the present apparatus is simple in structure, and measuring method is simple and easy to do, and installation cost is low, has economical well.
The correlation component such as dynamic torque sensor, data collecting card for the 2nd, being selected in the present apparatus is all very ripe on the market
Product, have good applicability, convenient for safeguard, to use environment require it is low, be industrial production in common sensor.
3rd, for measuring the friction and wear characteristic of the not curved surface faying face of same material, test specimen to be measured is only needed to change,
Improve the utilization rate of same testing stand.
4th, present apparatus loading system employs the design method of spring, avoid the loading of direct bolt small stroke, it is big just
The problem of spending by the way of high rigidity spring, can uniformly easily load it.
5th, experimental bench can carry out the fretting wear of the joint curved surface faying face under glossy state and under non-glossy state respectively
Characteristic test has good versatility.
6th, most loading force is unloaded on lower plate at last in device, and sensor and motor shaft do not undertake axial force, so as to
Increase the service life of motor and sensor.
7th, in loading system, can the size of loading force intuitively be measured according to the position of two spring bases.
Therefore, joint curved surface faying face friction and wear characteristic test device of the present invention solves currently combines in joint curved surface
The problem of face friction and wear test, can more convenient, accurately measure the pass of not same material using the present apparatus
The friction and wear characteristic of pitch surface faying face, and its is easy to operation, and data are intuitive, reliable.
Description of the drawings
Fig. 1 is measuring device overall construction drawing；
Fig. 2 is loading system structure diagram；
Fig. 3 is guide rail and guide rail bearing schematic diagram；
Fig. 4 couples schematic diagram for lower bridge plate with test specimen cambered surface ball-and-socket to be measured；
Fig. 5 is axis and test specimen connection diagram to be measured；
Fig. 6 is guide support system semi-cutaway；
Fig. 7 is data collection and analysis processing system block diagram.
In figure：1st, lower 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 bearing, 8, spring base B, 9, guide rail nut A, 10, guide rail bearing A, 11, guide rail A, 12, spring base A, 13, under
Bridge plate, 14, axis, 15, bearing block, 16, dynamic torque sensor, 17, shaft coupling A, 18, motor cabinet, 19, motor, 20, shaft coupling
B, 21, sensor cushion block, 22, shaft coupling C, 23, shaft coupling D, 24, guide rail B, 25, guide rail nut B, 26, guide rail bearing B, 27,
Loading spring, 28, loading bolt B, 29, bearing A, 30, axle sleeve, 31, bearing B, 32, screw, 33, test specimen to be measured, 34, mandrel spiral shell
Mother, 35, loading mandrel.
Specific embodiment
1~Fig. 7 is described further the specific embodiment of the invention below in conjunction with the accompanying drawings：
A kind of joint curved surface faying face friction and wear characteristic test device, the test device include friction testing arrangement and letter
Number collection analysis processing system；The friction testing arrangement by loading system, experiment with reference to plane system, guide support system,
Signal detection system, support dynamical system composition.
Loading system is led by loading bolt A (4), loading bolt B (28), loading nut A (3), loading nut B (6), loading
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 in diagonal that nut A (3) and loading nut B (6), which is loaded, about loading mandrel (35) center
It is symmetrically arranged on loading bearing (7)；Load bearing (7) another diagonal be equipped with threaded hole, loading bolt A (4) and plus
It carries bolt B (28) precession threaded hole and friction testing arrangement is loaded；Load guide rail A (2) with loading guide rail B (5) about
Loading mandrel (35) center is symmetrically arranged in diagonal on loading bearing (7), and is set on the corresponding position of loading bearing (7)
There is unthreaded hole, be fixed on loading bearing (7) by loading nut A (3) and loading nut B (6)；Spring base A (12) and bullet
Spring abutment B (8) is placed on by shaft hole matching respectively on loading guide rail A (2), loading guide rail B (5), and can be along 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)
At position, loading spring (27) is sleeved on loading mandrel (35), is 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), the loading force of loading spring (27) is transmitted to
Spring base 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)
It is connected on guide rail bearing A (10) by guide rail nut A (9)；Guide rail B (24) is connected to guide rail branch by guide rail nut B (25)
On seat B (26), 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 by bearing block (15), bearing A (29), shaft coupling D (23), axle sleeve (30) and bearing B (31) group
Into；The side of bearing block (15) is equipped with the shaft shoulder, and the outer ring of bearing B (31) is withstood at the shaft shoulder, bearing B (31) and bearing A (29) phase
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 set
It puts between bearing 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
The inner ring of A (29) is withstood on the inner ring of bearing B (31) on axle sleeve (30) respectively；During installation, axis (14) is sequentially passed through into bearing A
(29), axle sleeve (30) and bearing B (31), make the shaft shoulder of axis (14) withstand on the inner ring of bearing A (29), axis (14) and shaft coupling D
(23) coupled by singly-bound.
Signal detection system includes shaft coupling C (22), dynamic torque sensor (16), sensor cushion block (21) and shaft coupling
A (17) is formed；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)
Coordinated by end flanges and motor cabinet (18), and pass through bolt and the two is fixed, shaft coupling B (20) passes through list
Key is coupled with the output shaft of motor (19).
Lower plate (1) is the support frame of entire pilot system, and loading system is connected by bolts a left side for lower plate (1)
Side, bearing block (15) are connected by bolts on lower plate (1), and mounting distance should be with loading system and lower bridge plate (13), axis
(14) distance is suitable, i.e., can make just under no-load condition, and axis (14) and the arc ball-and-socket of lower bridge plate (13) are in close contact,
The right side of bearing block (15), sensor cushion block (21) are connected by bolts on lower plate (1), and installation site is just to make shaft coupling
Device C (22) couples with shaft coupling D (23) and is advisable, and motor cabinet (18) is connected by bolts to the rightmost side of lower plate (1), peace
Holding position is advisable so that shaft coupling A (17) is just made to couple with shaft coupling B (20), passes through regulation motor seat (18), sensor cushion block
(21), the position of bearing block (15), guide rail bearing A (10), guide rail bearing B (26), loading bearing (7), ensures motor (19)
Output shaft, 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
The size that front and rear distance change is worth to specific loading force is loaded between seat A (12) and 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 base B (8) is in loading guide rail A (2) and loading guide rail B (5) horizontal sliding, not run-off the straight.
A kind of joint curved surface faying face friction and wear characteristic test device, the transmittance process of the device loading force are to load
For bolt A (4) and loading bolt B (28) by screwing in, the mobile compression-loaded springs (27) of meeting push the spring seat B (8) make loading force
Spring base A (12) is transmitted to by loading spring (27), spring base A (12) passes loading force by being contacted with lower bridge plate (13)
It is delivered at the curved surface faying face of joint, and continues to pass to axis (14), bearing A (29), axle sleeve (30), bearing B (31) successively to the right,
Bearing block (15) is ultimately transferred to, loading force is unloaded on lower plate (1), in entire loading procedure, dynamic torque sensor
(16) axial force is not subject to motor (19), the service life both so as to extend.
In signal processing and analysis processing system, computer E1 sends out work order, is exported by capture card E2 to driver
The signal received is carried out processing output and gives motor (19) by E3, driver E3, and motor (19) is transported with specified speed at this time
Turn, entire experimental rig is loaded, and the size of loading force is manually entered into computer E1 by loading system, moved
The signal measured is transmitted to computer E1 by state torque sensor (16) by capture card E2, and computer E1 is to torque signal, electricity
Machine tach signal, loading force size are integrated, and draw the size of different loads and torque under rotating speed, are analysis of joint curved surface knot
The friction and wear characteristic in conjunction face provides data.
A kind of joint curved surface faying face friction and wear characteristic test device carries out joint curved surface faying face friction and wear characteristic
Test method, this method include the following steps,
Step1., detected materials are processed into the test specimen to be measured (33) of standard, if experiment need under oil lubrication state into
Row 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 penetrates into outer surface, if tested under non-immersion oil state, can omit this step；
Step2. test specimen to be measured (33) is fastenedly connected by screw (32) on axis (14), and by test specimen to be measured (33)
Curved 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) is slid to the right on guide rail A (11) and guide rail B (24), make its cambered surface ball-and-socket with it is to be measured
Test specimen (33) outer surface completely attaches to；
Step4. power on, computer E1 provides instruction, makes motor (19) that system be driven to be risen with given rotation speed operation
Come；
Step5. loading bolt A (4) and loading bolt B (28) are tightened simultaneously and uniformly, it is ascending to system progress
Loading, until system is stablized, the numerical values recited of loading force is inputted into computer E1, and obtain torque from computer E1
Size；
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 friction mill of the curved surface faying face for this kind of material of analysis
It damages characteristic and data support is provided.
The foregoing is merely an example of the present invention, it can treat that the progress such as size, shape of test block are appropriate to be changed
Becoming, the friction and wear characteristic parameter measurement or driving motor for enabling other curved surface faying faces change other forms into,
As long as rotational power can be provided, test device is similar to test method to this example.As long as its measuring device mechanical structure
Design and whole measuring principle describe unanimously with the present invention, are regarded as the range included by 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.
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| CN111098331B (en) * | 2020-01-04 | 2021-04-02 | 中国矿业大学徐海学院 | Industrial robot capable of detecting joint wear degree in real time |
| CN111649941A (en) * | 2020-06-12 | 2020-09-11 | 上海大学 | Multifunctional sliding bearing friction wear testing machine |
| CN111638151B (en) * | 2020-07-15 | 2022-02-22 | 一汽解放汽车有限公司 | Test method for detecting abrasion resistance of friction pair |
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