CN111487058B - Rolling bearing slip test method - Google Patents
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- CN111487058B CN111487058B CN202010345669.XA CN202010345669A CN111487058B CN 111487058 B CN111487058 B CN 111487058B CN 202010345669 A CN202010345669 A CN 202010345669A CN 111487058 B CN111487058 B CN 111487058B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J2005/0077—Imaging
Abstract
The invention provides a rolling bearing slip test method, which comprises the following steps: 1) removing part of rolling bodies of the test bearing, reserving at least three rolling bodies and uniformly distributing the rest rolling bodies along the circumferential direction of the test bearing; 2) driving an inner ring and an outer ring of the test bearing to relatively rotate at a controllable relative rotating speed, applying axial and/or radial load to the test bearing when the inner ring and the outer ring relatively rotate, and measuring the rotating speed of the retainer; 3) and controlling the relative acceleration and deceleration of the inner ring and the outer ring, and/or changing the load to enable rolling and sliding compound motion to occur between the rolling body and the raceway, and simultaneously acquiring the temperature rise change in the contact area of the rolling body and the raceway through a thermal imager. On the premise of ensuring the stable rotation of the inner ring, the outer ring and the retainer, the distance between the adjacent rolling bodies can be increased, the overlapping of hot areas in an image shot by the thermal imager is less, the noise of data processing is reduced, and the subsequent data processing is facilitated.
Description
Technical Field
The invention relates to a rolling bearing slip test method.
Background
The angular contact ball bearing is an important universal part, and is particularly widely applied to various mechanical equipment with remarkable advantages, the motion precision of the angular contact ball bearing determines the precision performance of mechanical equipment, but the angular contact ball bearing is also one of the most prone to failure parts in the mechanical equipment. The bearings have many failure modes, and a large part of them is slippery due to frictional wear and rolling fatigue inside the bearings. The main reason of the slipping injury is caused by the rolling and slipping compound motion of the contact between the roller and the hob inside the bearing, so that the dynamic contact behavior of the rolling body and the raceway in the running process of the rolling bearing is known, and the rolling bearing has great positive effects on improving the performance of the bearing and prolonging the service life of the bearing.
In fact, not only angular contact ball bearings, but also other rolling bearings, knowing the dynamic contact behavior of the rolling elements with the raceways during operation, has a very positive effect on improving the bearing performance.
Disclosure of Invention
The invention aims to provide a rolling bearing slip test method, which is used for testing rolling and slipping compound motion of contact of a rolling body and a raceway in a rolling bearing.
In order to realize the aim, the technical scheme of the rolling bearing slip test method is as follows: a rolling bearing slip test method comprises the following steps:
1) removing part of rolling bodies of the test bearing, reserving at least three rolling bodies and uniformly distributing the rest rolling bodies along the circumferential direction of the test bearing;
2) driving an inner ring and an outer ring of the test bearing to relatively rotate at a controllable relative rotating speed, applying axial and/or radial load to the test bearing when the inner ring and the outer ring relatively rotate, and measuring the rotating speed of the retainer;
3) and controlling the relative acceleration and deceleration of the inner ring and the outer ring, and/or changing the load to enable rolling and sliding compound motion to occur between the rolling body and the raceway, and simultaneously acquiring the temperature rise change in the contact area of the rolling body and the raceway through a thermal imager.
The beneficial effects of the invention are: the rolling-sliding composite motion between the rolling body and the roller path can be generated by the relative acceleration and deceleration between the inner ring and the outer ring and/or the change of the load, and the rolling-sliding ratio at the moment can be obtained by the relative rotating speed of the inner ring and the outer ring and the rotating speed of the retainer. The thermal imager can acquire the temperature rise change of the contact area between the rolling body and the raceway, can acquire the temperature change trend of the contact area between the rolling body and the raceway of the test bearing in different rolling-sliding ratio states, can know the friction change trend between the rolling body and the raceway under rolling-sliding composite motion, and has positive effect on subsequent bearing improvement. According to the invention, by removing part of the rolling bodies of the rolling bearing and uniformly distributing the rest rolling bodies, on the premise of ensuring the stable rotation of the inner ring, the outer ring and the retainer, the distance between the adjacent rolling bodies can be increased, the mutual influence of heat generated when the adjacent rolling bodies are contacted with the roller paths is small, the overlapping of hot areas in an image shot by the thermal imager is small, the noise of data processing is reduced, and the subsequent data processing is convenient. Moreover, when the axial load is applied, after the number of the rolling bodies is reduced, the size of the total axial load can be reduced under the condition of ensuring that the load of each rolling body is not changed, and the force application is convenient.
Further, a non-contact photoelectric measuring device is adopted to carry out non-contact measurement on the rotating speed of the retainer. By adopting a non-contact measurement mode, the influence on the rotation of the retainer can be reduced as much as possible, and the measurement accuracy is improved.
Furthermore, the non-contact photoelectric measuring device and the thermal imager are sequentially arranged at intervals in the circumferential direction of the test bearing. The two are arranged at intervals in the circumferential direction, so that the overlapping of the two measurement areas can be prevented, and the arrangement is convenient.
Further, during testing, one of the inner ring and the outer ring of the test bearing is fixed, and the other is driven to rotate so as to realize the relative rotation of the inner ring and the outer ring;
the rolling-sliding ratio of the test bearing under different working conditions is obtained by measuring the rotating speed of one of the inner ring and the outer ring of the test bearing and combining the rotating speed of the retainer. The relative rotation between the inner ring and the outer ring is realized by fixing one of the inner ring and the outer ring and rotating the other one, so that the test is convenient, and the data is easier to control and measure.
Further, in the test, an axial load was applied to an axial end face of one of the inner race and the outer race fixedly disposed. By applying a force to the fixedly arranged inner ring or outer ring, the influence on the rotating outer ring or inner ring is avoided.
Further, during testing, axial load is applied to the bearing through the axial loading structure, the number of the axial loading structures is at least three, or the axial loading structure comprises at least three force application points which are uniformly applied to the test bearing, and the three force application points are uniformly distributed along the circumferential direction of the test bearing. And the mode of applying force by at least three points is adopted, so that the axial load born by the test bearing is more uniform, and a uniform bearing area is formed on the test bearing.
Further, when an axial load is applied to the test bearing, the axial load value is reduced in an equal proportion according to the following formula:
f is an axial load applied during the test, N is the number of rolling bodies remaining after picking, and N is the number of rolling bodies before picking; f1The axial load value under the working condition to be simulated during the test before removal. During testing, the axial load is reduced in equal proportion, the axial load borne by each rolling body before and after removal is guaranteed to be unchanged, and the axial load is closer to the actual testing working condition.
Drawings
FIG. 1 is a schematic view of a test apparatus used in example 1 of a rolling bearing slip test method of the present invention;
description of reference numerals: 1-driving a motor; 2-a coupler; 3-a first support bearing; 4-a linear actuator; 5-a second support bearing; 6-a pull rod; 7-testing the bearing; 8-inner ring drive shaft; 9-a non-contact photoelectric measuring device; 10-infrared thermal imager; 11-a base; 12-a first bearing seat; 13-second bearing block.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
Specific example 1 of the rolling bearing slip test method of the present invention:
as shown in FIG. 1, the main purpose of the rolling bearing slipping test method is to obtain the rolling state of the roller and the raceway under different working condition conditions (rotating speed and load conditions), obtain the temperature change of the contact area when the roller slips under the rolling state through measurement and calculation, and obtain the data which can be used for researching the specific working condition causing the high-speed light-load slipping of the bearing.
Fig. 1 shows a test device adopted in the rolling bearing slippage test method, the test device comprises a base 11, and a driving motor 1 is installed on the base 11. The motor shaft of the driving motor 1 is connected with an inner ring driving shaft 8 through a coupler 2, the inner ring driving shaft 8 adopts a two-point supporting mode, specifically, a first bearing seat 12 and a second bearing seat 13 are fixedly installed on a base 11, the first bearing seat 12 is provided with a first supporting bearing 3, the second bearing seat 13 is provided with a second supporting bearing 5, and the first supporting bearing 3 and the second supporting bearing 5 are both cylindrical roller bearings and are lubricated by grease. The test bearing 7 is arranged at the tail end of the inner ring driving shaft 8, the first support bearing 3, the second support bearing 5 and the test bearing 7 are all characterized in that the inner rings rotate and the outer rings are fixed, the inner rings are all fixed on the inner ring driving shaft 8, and the outer rings of the support bearings are all fixed on corresponding bearing seats. Bearing load is applied to the outer ring of the test bearing 7 through the linear actuator 4 and the pull rod 5, specifically, the linear actuator 4 is fixed on a second bearing seat 13, the pull rod 6 penetrates through the second bearing seat 13, one end of the pull rod 6 is connected with the linear actuator 4, the other end of the pull rod 6 is fixed on the outer ring of the test bearing 7, and the outer ring of the test bearing 7 is applied with pulling force through the linear actuator 4 and the pull rod 6. Wherein the pull rod 6 and the outer ring of the test bearing 7 are fixed in a bonding mode.
In order to measure the rotation speed of the holder, a non-contact photoelectric measuring device 9 is further mounted on the base 11, and the non-contact photoelectric measuring device 9 corresponds to the lower half portion of the test bearing 7. The non-contact photoelectric measuring device 9 is a commercially available structure for measuring the rotation speed, and is not described herein again. The testing device further comprises a thermal infrared imager 10, the thermal infrared imager 10 is a high-speed thermal infrared imager, as can be seen from fig. 1, the thermal infrared imager 10 is over against the upper half part of the testing bearing, the contact area between the roller and the inner and outer raceways in the testing bearing can be shot, and the temperature change history of the contact area is recorded. The non-contact photoelectric measuring device 9 and the thermal infrared imager 10 correspond to different circumferential positions of the test bearing, and the measurement areas of the non-contact photoelectric measuring device and the thermal infrared imager are prevented from being overlapped.
The driving motor 1 is controlled by adopting a variable frequency driving method, a control closed loop is formed by a built-in encoder of the driving motor 1, the frequency converter is communicated with control calculation through a communication bus, the rotating speed can be recorded in real time through control software, and a formula is utilized: and (3) calculating to obtain the actual rotating speed n according to the number p of the pole pairs of the motor and the driving frequency f of the frequency converter, and transmitting the actual rotating speed n to the frequency converter by using a communication bus through the speed and acceleration process set by control software to complete the setting of a rotating speed spectrum. Stepless speed regulation of the driving motor 1 is realized by changing the driving frequency of the frequency converter.
The linear actuators 4 are arranged on the second bearing seat 13, three linear actuators are arranged at equal intervals along the circumferential direction of the second bearing seat 13, axial load can be uniformly applied to the test bearing 7, an evenly-distributed bearing area is formed on the test bearing 7, and the linear actuators 4 apply pulling force to an outer ring of the test bearing 7 through the pull rod 6. The displacement voltage fed back by the linear actuator 4 is output to the control system through the connecting cable, and the control software utilizes the formula:
uithe axial load is calculated for the displacement voltage value of each actuator, a is the actuator gain, b is the offset, and k is the tie rod stiffness. And the control system calculates the control quantity and outputs the control quantity to the linear actuator through a cable, so that the closed-loop control of the axial load is realized, and the implementation of a preset load spectrum is completed.
The non-contact photoelectric measuring device 9 is used for measuring the rotating speed of the retainer, a dark mark area can be sprayed on the retainer in actual use to improve the light detection capability, a rising edge signal can be formed when light irradiates the mark area in measurement, the actual rotating frequency of the retainer can be calculated by collecting the rising edge signal in unit time, and the actual rotating speed of the retainer can be obtained by taking the reciprocal of the frequency.
The thermal infrared imager 10 is used for measuring a friction heat generation process of contact between the roller and the raceway, namely, the temperature of a contact area is collected, the thermal infrared imager 10 is fixed by a triangular support when in specific use, a certain fixed area on the shooting test bearing 7 is fixed after the focal length is adjusted, the temperature change process of the area is recorded, and the temperature change data in the area can be obtained by an image processing program. In actual use, in order to ensure that rolling bodies are certainly present in the recording area of the thermal infrared imager 10, the recording area of the thermal infrared imager 10 may be enlarged, for example, the thermal infrared imager 10 may cover one half of the test bearing 7, and since the number of the rolling bodies is at least three, the rolling bodies are certainly present in the recording area of the thermal infrared imager 10. In an actual test, the thermal infrared imager 10 may capture a thermal image of a certain roller in a period from entering the recording area to rotating away from the recording area, and through subsequent processing, a temperature change in the period may be obtained.
The test device further comprises a measurement and control system, the measurement and control system has the function of collecting the driving rotating speed, the rotating speed of the retainer, the axial load and the temperature of the contact area, control software is installed on the measurement and control system, a speed spectrum and a load spectrum of a test can be set through the control software, and test data are recorded. The temperature change value of the contact zone can be obtained through data processing of control software, and the rolling-sliding ratio of the test bearing is calculated through the measured rotating speed of the retainer and the rotating speed of the inner ring of the test bearing.
In the embodiment, the test bearing adopts an H7006C type bearing for a machine tool spindle, in order to more conveniently measure the specific slip state of a rolling body and a raceway and facilitate subsequent temperature rise data processing, a part of H7006C type bearing steel balls for testing are taken out, and 3 steel balls are arranged at equidistant positions, namely 3 steel balls are uniformly distributed in the circumferential direction of the test bearing. The inner ring of the test bearing is fixed on the shaft system by adopting a hot mounting mode, the three actuators are respectively arranged on the second bearing pedestal 13, the pull rod 6 penetrates through the second bearing pedestal 13, one end of the pull rod is connected with the outer ring of the H7006C bearing, and the other end of the pull rod is arranged on the linear actuator 4. Since the axial load applied to the test bearing 7 during operation acts on each roller, after a certain roller is taken out, in order to ensure that the stress of the remaining rollers is not changed, a formula can be used
According to the number N of rollers and the applied load F under the simulated working condition of the test bearing1The number n of the remaining rollers can be calculated to obtain the required application of the test bearing 7 under the simulated working condition after a certain roller is properly taken outAn axial load is added. Of course, in other embodiments, the magnitude of the axial load may be adjusted according to actual conditions, but preferably, the axial load is applied in an equal proportion reduction mode, so that the actual working conditions can be better simulated. In particular, the H7006C type bearing used in the present embodiment, since only three steel balls are installed, the preload force to be applied to each linear actuator 4 is in the range of 10-12N.
The specific test method comprises the following steps:
1) and taking out a part of the rollers, only keeping three rollers and uniformly distributing the three rollers in the test bearing along the circumferential direction.
2) And setting three control parameters of a rotating speed spectrum, a load spectrum and test time on a control software operation interface according to the requirements of the rotating speed and the axial load of the test. The testing process is that the inner ring rotates, axial load is applied to the testing bearing through the tensile force output by the linear actuator, and the rotating speed of the motor, the rotating speed of the testing bearing retainer, the axial load and the temperature of a contact area between the testing bearing roller and the raceway are collected.
3) In order to ensure the normal test of the test bearing, whether each test part is normal or not is checked, then an axial load is applied to the test bearing 7 through the linear actuator 4, and then the frequency converter is started to drive the motor to rotate. When a test is started, the driving motor 1 drives the inner ring driving shaft 8 to drive the inner ring of the H7006C type bearing to rotate, the driving motor 1 is provided with an encoder to monitor the output rotating speed of the motor in real time and feed the motor back to the frequency converter, so that the rotating speed closed-loop control and the display of the real-time rotating speed of the main shaft are achieved, and the rapid acceleration and deceleration movement of the H7006C type bearing are accurately controlled.
4) Different rolling-sliding ratios of the test bearing can be realized through matching of the driving rotating speed and the axial load in the test process, and the method specifically comprises the following steps:
Firstly, fixing the axial load to be unchanged, and outputting different inner ring acceleration and deceleration processes by changing the acceleration and deceleration time of a driving motor so as to change the rolling-sliding ratio of the test bearing;
secondly, the fixed rotating speed is unchanged, the change condition of the rolling-sliding ratio is observed by changing the axial load, and the method must ensure that the test bearing always bears the minimum axial pretightening force;
thirdly, the rolling-sliding ratio of the test bearing is changed by adopting a method of compositely adjusting the rotating speed and the axial load and setting different acceleration and deceleration processes and the axial load, and the minimum axial preload of the test bearing is always satisfied under the same method.
5) In the test, the non-contact photoelectric measuring device 9 measures the rotating speed of the retainer by collecting the periodic variation of light, combines the rotating speed of the inner ring, the diameter of the roller and other parameters, and calculates the actual rolling-sliding ratio of the test bearing through an empirical formula. Meanwhile, the thermal infrared imager 10 records the temperature rise process of the contact area between the roller and the raceway when the bearing is in different rolling-sliding ratio states.
6) And after the test is finished, obtaining a temperature change value of a contact area in the test process of the H7006C type bearing through later-stage image data processing, and drawing an actual rolling-sliding ratio and a temperature change curve by using the collected test data.
In the present embodiment, the linear actuator 4 and the pull rod 6 together form an axial loading structure for applying an axial load to the test bearing 7, wherein three axial loading structures are provided, in other embodiments, the number of the axial loading structures may be increased, and each axial loading structure is uniformly arranged along the circumferential direction of the test bearing.
In the embodiment, at least three axial loading structures are arranged, so that the axial load can be uniformly distributed on the test bearing, and a uniform bearing area is formed in the test bearing. In other embodiments, there may be only one axial loading structure, for example, the axial loading structure includes a fixed ring fixed to the outer race of the test bearing, and at least three linear actuators are fixedly mounted to the support bearing housing, each of the three linear actuators being connected to the fixed ring. Wherein, solid fixed ring can laminate on the outer lane completely, also can carry out three point fixed connection with solid fixed ring, or more equipartition point fixed connection.
In the embodiment, the relative rotation speed between the inner ring and the outer ring in the test bearing is controllable, wherein the controllability means that the relative rotation speed change of the inner ring and the outer ring can be quantitatively controlled, and a contrast value between the relative rotation speed of the retainer and the relative rotation speed of the inner ring and the relative rotation speed of the outer ring can be obtained through quantitative control, so that the rolling-sliding ratio can be obtained.
in embodiment 1, the number of the rollers is three, and in this embodiment, the number of the rollers may be four or more, but all of the rollers need to be removed from the standard bearing, so that the circumferential distance between adjacent rollers can be increased, the axial load can be reduced, and in addition, when subsequent processing is performed, the intersection between the temperature gradient maps between the adjacent rollers and the raceways is small, which is convenient for subsequent data processing.
in embodiment 1, a non-contact photoelectric measurement device is used for measuring the speed of the retainer, in this embodiment, a strain gauge may be attached to an inner wall of the outer ring, and a strain acquisition module is correspondingly disposed, so that when the roller passes through the strain gauge once, a sudden change may occur in the strain acquired by the strain acquisition module to form a peak value, and the rotation speed of the retainer may be calculated by acquiring the number of the peak values within a set time. Specifically, the method disclosed in chinese patent application publication No. CN110108488A may be referred to.
In embodiment 1, the axial load is applied to the test bearing, but in this embodiment, a radial load may be applied to the test bearing, specifically, a radial load may be applied to the outer race, or a radial load may be applied to the inner race drive shaft. Or in other embodiments, both axial and radial loads may be applied.
Specific example 5 of the rolling bearing slip test method of the present invention:
in embodiment 1, the inner ring and the outer ring are relatively rotated by fixing the outer ring and rotating the inner ring, and in this embodiment, the inner ring and the outer ring are relatively rotated by fixing the inner ring and rotating the outer ring. Or the inner race and the outer race may be rotated simultaneously. Specifically, the outer ring is driven to rotate by sleeving the fixing sleeve outside the outer ring and driving the fixing sleeve to rotate.
Specific example 6 of the rolling bearing slip test method of the present invention:
in embodiment 1, the rotation speed can be measured by itself in the driving motor, and in this embodiment, a measuring device may be disposed at the output shaft of the motor to measure the rotation speed of the driving motor (i.e., the rotation speed of the inner ring).
Specific example 7 of the rolling bearing slip test method of the present invention:
in the embodiments, an angular contact ball bearing is taken as an example for explanation, wherein the rolling element is a roller, in the present embodiment, the rolling bearing may be other types of bearings, such as a deep groove ball bearing, and the rolling element may be a roller or a needle roller.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (4)
1. A rolling bearing slip test method is characterized in that: the method comprises the following steps:
1) removing part of rolling bodies of the test bearing, reserving at least three rolling bodies and uniformly distributing the rest rolling bodies along the circumferential direction of the test bearing;
2) driving an inner ring and an outer ring of the test bearing to relatively rotate at a controllable relative rotating speed, applying axial load to the test bearing when the inner ring and the outer ring relatively rotate, and measuring the rotating speed of the retainer;
3) controlling the relative acceleration and deceleration of the inner ring and the outer ring, and/or changing the load to enable rolling and sliding compound motion to occur between the rolling body and the raceway, and simultaneously acquiring temperature rise change in a contact area of the rolling body and the raceway through a thermal imager; during testing, one of the inner ring and the outer ring of the test bearing is fixed, and the other is driven to rotate so as to realize the relative rotation of the inner ring and the outer ring;
by measuring the rotational speed of one of the inner and outer rings of the test bearing and maintaining the same in combination The rotating speed of the frame is adjusted, so that the rolling-sliding ratio of the test bearing under different working conditions is obtained; during testing, an axial load is applied to the axial end face of one of the inner ring and the outer ring which are fixedly arranged; when an axial load is applied to the test bearing, the axial load value is reduced proportionally according to the following formula:
f is an axial load applied during the test, N is the number of rolling bodies remaining after picking, and N is the number of rolling bodies before picking; f1The axial load value under the working condition to be simulated during the test before removal; after the test is finished, the temperature change value of the contact area in the bearing test process is obtained through later-stage image data processing, and the actual rolling-sliding ratio and the temperature change curve are drawn by utilizing the collected test data.
2. The rolling bearing slip test method according to claim 1, characterized in that: and a non-contact photoelectric measuring device is adopted to carry out non-contact measurement on the rotating speed of the retainer.
3. The rolling bearing slip test method according to claim 2, characterized in that: and arranging the non-contact photoelectric measuring devices and the thermal imagers at intervals in sequence in the circumferential direction of the test bearing.
4. The rolling bearing slip test method according to claim 1, 2 or 3, characterized in that: during testing, axial load is applied to the bearing through the axial loading structure, the axial loading structure is uniformly distributed with at least three points along the circumferential direction, or the axial loading structure comprises at least three force application points uniformly applied to the test bearing, and the three force application points are uniformly distributed along the circumferential direction of the test bearing.
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| CN114509260B (en) * | 2021-11-29 | 2023-12-15 | 中国航发沈阳发动机研究所 | Acceleration equivalent test method for high-speed inner-outer ring co-rotating roller bearing of aero-engine |
| CN115031965B (en) * | 2022-03-29 | 2023-05-09 | 南京航空航天大学 | Test bed for simulating bearing slip in high-speed rotating machinery and design method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1054819A (en) * | 1990-03-12 | 1991-09-25 | 佳木斯工学院 | Centripetal rolling thrust bearing |
| CN102353540A (en) * | 2011-06-29 | 2012-02-15 | 西安交通大学 | Slip testing apparatus for high-speed rolling bearing |
| CN104459182A (en) * | 2014-11-18 | 2015-03-25 | 哈尔滨工业大学 | Optical fiber speed measurement device and method for high-speed rolling bearing retainer with inner ring and outer ring rotating simultaneously |
| CN106769043A (en) * | 2016-12-26 | 2017-05-31 | 河南科技大学 | The angular contact bearing bearing test methods that a kind of inner ring and outer ring rotate simultaneously |
| CN108168889A (en) * | 2018-02-07 | 2018-06-15 | 哈尔滨工业大学 | A kind of temperature field measuring apparatus and method of rolling bearing experiment |
| CN110108488A (en) * | 2018-12-04 | 2019-08-09 | 北京交通大学 | Rolling bearing retainer skidding research experiment system |
| CN110160788A (en) * | 2019-06-27 | 2019-08-23 | 中广核核电运营有限公司 | A kind of rolling bearing skidding research experiment platform |
| CN110514443A (en) * | 2019-09-04 | 2019-11-29 | 中国航发哈尔滨轴承有限公司 | A kind of contactless measurement of aircraft bearing retainer skidding rate |
-
2020
- 2020-04-27 CN CN202010345669.XA patent/CN111487058B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1054819A (en) * | 1990-03-12 | 1991-09-25 | 佳木斯工学院 | Centripetal rolling thrust bearing |
| CN102353540A (en) * | 2011-06-29 | 2012-02-15 | 西安交通大学 | Slip testing apparatus for high-speed rolling bearing |
| CN104459182A (en) * | 2014-11-18 | 2015-03-25 | 哈尔滨工业大学 | Optical fiber speed measurement device and method for high-speed rolling bearing retainer with inner ring and outer ring rotating simultaneously |
| CN106769043A (en) * | 2016-12-26 | 2017-05-31 | 河南科技大学 | The angular contact bearing bearing test methods that a kind of inner ring and outer ring rotate simultaneously |
| CN108168889A (en) * | 2018-02-07 | 2018-06-15 | 哈尔滨工业大学 | A kind of temperature field measuring apparatus and method of rolling bearing experiment |
| CN110108488A (en) * | 2018-12-04 | 2019-08-09 | 北京交通大学 | Rolling bearing retainer skidding research experiment system |
| CN110160788A (en) * | 2019-06-27 | 2019-08-23 | 中广核核电运营有限公司 | A kind of rolling bearing skidding research experiment platform |
| CN110514443A (en) * | 2019-09-04 | 2019-11-29 | 中国航发哈尔滨轴承有限公司 | A kind of contactless measurement of aircraft bearing retainer skidding rate |
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