CN114088398B - Test method for evaluating performance of bearing rolling body - Google Patents
Test method for evaluating performance of bearing rolling body Download PDFInfo
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- CN114088398B CN114088398B CN202111129778.9A CN202111129778A CN114088398B CN 114088398 B CN114088398 B CN 114088398B CN 202111129778 A CN202111129778 A CN 202111129778A CN 114088398 B CN114088398 B CN 114088398B
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The application relates to the technical field of test devices, in particular to a test method for evaluating the performance of a bearing rolling body, which comprises the following steps: acquiring the same first rolling body and second rolling body, the same first friction group and second friction group; the first rolling body and the first friction group are rubbed mutually, after a preset time is reached, the friction is stopped, and the mass of the first rolling body and the mass of the first friction group are recorded; carrying out electromagnetic treatment on the second rolling bodies; under the same friction condition as the first rolling body and the first friction group, the electromagnetically treated second rolling body and the second friction group are rubbed mutually, after a preset time is reached, the friction is stopped, and the mass of the second rolling body and the mass of the second friction group are recorded; and comparing the masses of the first rolling body and the second rolling body after friction, and the first friction group and the second friction group respectively. The application can test the rolling element, thereby providing data support for evaluating the performance of the rolling element.
Description
Technical Field
The application relates to the technical field of test methods, in particular to a test method for evaluating the performance of a bearing rolling body.
Background
The rolling bodies (steel balls) are uniformly arranged between the two ferrules in the bearing by virtue of a retainer, and play roles in rolling and transferring; the rolling elements are load bearing parts, the shape, size and number of which determine the load bearing capacity and high speed running performance of the bearing.
Bearings are an important component in contemporary mechanical devices. Its main function is to support the mechanical rotator, reduce the friction coefficient in the course of its movement and ensure its rotation accuracy. The rolling bodies are the core elements in the rolling bearing, and due to their presence, there is only rolling friction between the opposite moving surfaces. The rolling bodies of the rolling bearing mainly comprise steel balls and rollers.
The rolling bearing is failed or damaged when the performance index of the rolling bearing cannot meet the use requirement due to a plurality of reasons in the use process; common failure modes are fatigue peeling, wear, plastic deformation, corrosion, burn, galvanic corrosion, cage damage, and the like. Fatigue is the predominant failure mode of bearings, primarily contact fatigue for rolling bearings.
The quality of the rolling body is controlled mainly through hardness detection in the production process, but the single hardness cannot fully reflect the service performance of the rolling body; the equipment related to the rolling bodies is mainly detection equipment, strengthening equipment and the like, and no special test equipment is used for rapidly evaluating the fatigue resistance of the rolling bodies.
Disclosure of Invention
In order to solve the technical problems, the test method for evaluating the performance of the rolling element of the bearing provided by the application can be used for rapidly testing the rolling element, so that data support is provided for evaluating the performance of the rolling element.
The test method for evaluating the performance of the bearing rolling body provided by the application comprises the following steps:
acquiring the same first rolling body and second rolling body, the same first friction group and second friction group;
the first rolling body and the first friction group are rubbed mutually, after a preset time is reached, the friction is stopped, and the mass of the first rolling body and the mass of the first friction group are recorded;
carrying out electromagnetic treatment on the second rolling bodies;
under the same friction condition as the first rolling body and the first friction group, the electromagnetically treated second rolling body and the second friction group are rubbed mutually, after a preset time is reached, the friction is stopped, and the mass of the second rolling body and the mass of the second friction group are recorded;
and comparing the masses of the first rolling body and the second rolling body after friction, and the first friction group and the second friction group respectively.
Further, the acquiring the same first rolling element and second rolling element, the same first friction group and second friction group specifically includes:
acquiring a first rolling body and a second rolling body which are the same in material, size and mass;
a first friction group and a second friction group are obtained, which are all the same in material, size and mass.
Further, the first friction group and the second friction group comprise a plurality of vibrating heads;
the corresponding vibrating heads in the first friction group and the second friction group are the same in material, size and mass.
Further, the first friction group and the second friction group comprise a plurality of friction pairs;
and corresponding friction pair materials, sizes and masses in the first friction group and the second friction group are the same.
Still further, each friction pair is arranged on the end face of the corresponding vibration head;
at least one friction pair is positioned at an eccentric position corresponding to the end face of the vibrating head.
In the above technical solution, the rubbing the first rolling element against the first friction group specifically includes:
each vibrating head of the first friction group clamps and fixes the first rolling body between the end surfaces of each vibrating head; at least one contact point of the contact points of the first rolling bodies and the vibration heads is positioned at an eccentric position corresponding to the end face of the vibration head; each vibrating head in the first friction group is correspondingly connected with an ultrasonic generator;
starting each ultrasonic generator to enable the vibration head corresponding to the first friction group to vibrate;
the first rolling bodies and the end surfaces of the vibrating heads in the first friction group are in friction loss.
Further, the rubbing the first rolling element against the first friction group specifically includes:
each friction pair in the first friction group is mounted on the end surfaces of different vibrating heads; each vibrating head in the first friction group is correspondingly connected with an ultrasonic generator;
each vibrating head in the first friction group clamps and fixes the first rolling body between the end surfaces of each friction pair;
starting each ultrasonic generator to enable the vibration head corresponding to the first friction group to vibrate;
the first rolling bodies and the end surfaces of the friction pairs in the first friction group are in friction loss.
Further, the friction between the second rolling element after electromagnetic treatment and the second friction group under the same friction condition as the first rolling element and the first friction group specifically includes:
the vibration heads of the second friction group clamp and fix the second rolling bodies after electromagnetic treatment between the end surfaces of the vibration heads; the second rolling bodies are positioned at the same positions as the first rolling bodies; the positions of the vibrating heads of the second friction group are the same as the positions of the corresponding vibrating heads in the first friction group; each vibration head of the second friction group is correspondingly connected with an ultrasonic generator;
starting each ultrasonic generator to enable the vibration head corresponding to the second friction group to vibrate; the vibration frequency of each vibration head is the same as the vibration frequency of the corresponding vibration head in the first friction group;
the electromagnetic treated second rolling bodies and the end surfaces of the vibrating heads in the second friction group are in friction loss.
Still further, the rubbing the electromagnetically treated second rolling element against the second friction group under the same rubbing condition as the first rolling element against the first friction group specifically includes:
each friction pair in the second friction group is mounted on the end surfaces of different vibrating heads; each vibration head of the second friction group is correspondingly connected with an ultrasonic generator;
the vibration heads of the second friction group clamp and fix the second rolling bodies after electromagnetic treatment between the end surfaces of the friction pairs; the second rolling bodies are positioned at the same positions as the first rolling bodies; the positions of the vibrating heads and the friction pairs of the second friction group are the same as the positions of the corresponding vibrating heads and friction pairs in the first friction group;
starting each ultrasonic generator to enable the vibration head corresponding to the second friction group to vibrate; the vibration frequency of each vibration head is the same as the vibration frequency of the corresponding vibration head in the first friction group;
the second rolling body after electromagnetic treatment and the end surfaces of each friction pair in the second friction group are mutually rubbed and lost.
Preferably, the vibration frequency of each vibration head is different.
In the application, the friction group and the rolling bodies which are subjected to electromagnetic treatment and not subjected to electromagnetic treatment are mutually worn so that the mass of the rolling bodies is consumed, corresponding wear data are generated for comparison, data support is provided for rapidly evaluating the service performance of the rolling bodies, and the data support is particularly aimed at the performance change of the rolling bodies subjected to electromagnetic treatment.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method according to an embodiment of the present application;
FIG. 2 is a schematic top view of a device according to a first embodiment of the present application;
FIG. 3 is a schematic diagram showing a position structure of a friction pair in a second embodiment of the present application;
FIG. 4 is a schematic diagram of a front view structure (omitting a first control box and a second control box and being enlarged in the same ratio) of an embodiment of the present application;
fig. 5 is a left side view of fig. 4.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The "electromagnetic field coupling strengthening and toughening" technique is a technique for improving the performance of a metal material by applying a specific electromagnetic coupling field to a subject to be treated. The method is mainly characterized in that under the premise of absorbing specific energy, the processed object generates displacement and differentiation on lattice dislocation and dislocation winding area inside the material, so that the internal stress, the organization and the microstructure of the material are changed to a certain extent; part of the microcracks are effectively passivated and healed, so that the macroscopic mechanical properties of the material, such as fatigue strength, hardness, elongation and the like, are greatly improved.
From this, it can be concluded that: the electromagnetically treated rolling element is superior in fatigue resistance to the rolling element which has not been electromagnetically treated. The test method for evaluating the performance of the bearing rolling element according to the present embodiment can be performed for the electromagnetically treated rolling element and the non-electromagnetically treated rolling element to wear, and then compare the wear data of the electromagnetically treated rolling element and the non-electromagnetically treated rolling element. The wear data are said to provide data support for validating the conclusion, thereby rapidly evaluating the performance of the rolling elements.
Example 1
As shown in fig. 1, a test method for evaluating the performance of a bearing rolling element according to an embodiment of the present application includes:
101. acquiring the same first rolling body and second rolling body, the same first friction group and second friction group; specifically:
1011. acquiring a first rolling body and a second rolling body which are the same in material, size and mass;
1012. a first friction group and a second friction group are obtained, which are all the same in material, size and mass.
As shown in fig. 2, in the bearing rolling element test apparatus of the present embodiment, both the first rolling element and the second rolling element are steel balls 15. Due to the comparative experiments, the two steel balls 15 are identical in terms of shape, material, mass, etc., and the ideal situation is to find two identical steel balls 15.
In reality, however, it is difficult to have exactly the same two steel balls 15. Thus, in the actual test, a plurality of steel balls of substantially identical size and mass and of the same material are divided into two groups of the same number. The average values of the masses of the two groups of steel balls are the same.
In the present embodiment, two steel balls 15 are taken as an example. Of course, the test conditions of a plurality of steel balls are also within the protection scope of the application.
The first friction group and the second friction group comprise a plurality of vibrating heads;
the corresponding vibrating heads in the first friction group and the second friction group are the same in material, size and mass.
As shown in fig. 2, in the present embodiment, each friction group includes: the first vibration head 5, the second vibration head 6 and the hand wheel lead screw 13.
As shown in fig. 1, 102, the first rolling element and the first friction group are rubbed with each other, after a preset time is reached, the friction is stopped, and the mass of the first rolling element and the first friction group is recorded; specifically:
1021. each vibrating head of the first friction group clamps and fixes the first rolling body between the end surfaces of each vibrating head; at least one contact point of the contact points of the first rolling bodies and the vibration heads is positioned at an eccentric position corresponding to the end face of the vibration head; each vibrating head in the first friction group is correspondingly connected with an ultrasonic generator;
as shown in fig. 2, the top end of the hand wheel screw 13 abuts against the steel ball 15, so that the first rolling body is relatively fixed between the first vibration head 5, the second vibration head 6 and the top end of the hand wheel screw 13.
The contact point of the steel ball 15 and the first vibration head 5 is positioned at the eccentric position of the end surface of the first vibration head 5, the contact point of the steel ball 15 and the second vibration head 6 is positioned at the central position of the end surface of the second vibration head 6, and the contact point of the steel ball 15 and the end surface of the top end of the hand wheel lead screw 13 is positioned at the central position of the end surface of the top end of the hand wheel lead screw 13.
In this embodiment, at least one of the contact points of the steel ball 15 is eccentrically arranged so that the steel ball 15 can roll when the vibrating head vibrates. The above arrangement allows the actual movement of the steel ball 15 in the bearing to be better mimicked during the test and a variety of wear and tear consumptions can be produced.
In the present embodiment, the first rolling elements (steel balls 15) are steel balls that have not undergone electromagnetic treatment. The ultrasonic generator of the first vibration head 5 includes: a first vibrating bar 1 and a first control box 16. The ultrasonic generator of the second vibration head 6 includes: a second vibratory rod 9 and a second control box 18.
The first control box 16 is connected to the other end of the first vibration rod 1 through a first wire 17. The second control box 18 is connected to the other end of the second vibration rod 9 through a second wire 19.
In this embodiment, the hand wheel screw 13 is a fixing device, and is not connected with an ultrasonic generating device, and belongs to passive friction. In the remaining embodiments, the hand wheel screw 13 may also be provided with vibration heads which function identically to the first and second vibration heads 5, 6.
1022. Starting each ultrasonic generator to enable the vibration head corresponding to the first friction group to vibrate;
1023. the first rolling bodies and the end surfaces of the vibrating heads in the first friction group are in friction loss.
In the present embodiment, the first control box 16 controls the start and stop of the first vibration head 5; the second control box 18 controls the start and stop of the second vibratory head 6. The first vibrating head 5 may be a vibrating square head with a vibration frequency of 18KHz. The second vibration head 6 is a vibration round head, and the vibration frequency is 20KHz. The first vibration head 5 and the second vibration head 6 have different shapes and different vibration frequencies, so that various wear and consumption of the rolling bodies can be generated.
At this time, the first rolling element, the first vibration head 5, the second vibration head 6 and the hand wheel screw 13 all generate loss, and the mass after friction is relatively changed compared with that before friction.
As shown in fig. 1, 103, subjecting the second rolling element to electromagnetic treatment;
in this embodiment, the electromagnetic treatment process is:
step1, placing a second rolling element (another steel ball 15) into the processing box;
step2, placing the processing box into electromagnetic processing equipment;
step3, starting electromagnetic treatment equipment, and performing electromagnetic treatment on the steel balls 15 in the treatment box;
step4, after the preset time period is reached, the electromagnetic treatment equipment is closed, and the steel ball 15 after electromagnetic treatment is taken out.
As shown in fig. 1, 104, under the same friction condition as the first rolling element and the first friction group, the electromagnetically treated second rolling element and the second friction group are rubbed with each other, after a predetermined time period is reached, the friction is stopped, and the mass of the second rolling element and the second friction group at the moment is recorded; specifically:
1041. the vibration heads of the second friction group clamp and fix the second rolling bodies after electromagnetic treatment between the end surfaces of the vibration heads; the second rolling bodies are positioned at the same positions as the first rolling bodies; the positions of the vibrating heads of the second friction group are the same as the positions of the corresponding vibrating heads in the first friction group; each vibration head of the second friction group is correspondingly connected with an ultrasonic generator;
1042. starting each ultrasonic generator to enable the vibration head corresponding to the second friction group to vibrate; the vibration frequency of each vibration head is the same as the vibration frequency of the corresponding vibration head in the first friction group;
1043. the electromagnetic treated second rolling bodies and the end surfaces of the vibrating heads in the second friction group are in friction loss.
In the present embodiment, the first and second vibrating heads 5 and 6 in the second friction group are identical (the same material, size, and mass) to the first and second vibrating heads 5 and 6 of the first friction group. The hand wheel screws 13 belonging to different friction groups are also identical (the same material, size and mass). Of course, in the actual test, it is difficult to have exactly the same vibrating head as the two steel balls 15 and exactly the same hand wheel screw, so that the first friction group and the second friction group may be processed by the same average value method as the steel balls 15. In this embodiment, however, two friction groups are taken as an example.
As shown in fig. 2, 4 and 5, the first vibration head 5 is mounted at one end of the first vibration rod 1. The second vibrating head 6 is mounted at one end of a second vibrating rod 9. The first vibrating rod 1 is detachably and fixedly arranged on the first interface 4 through the first supporting and fixing flange 2, the first supporting through hole flange 3 and the third screw 25. The first interface 4 is fixedly arranged on the base 14. The second vibration rod 9 is detachably and fixedly arranged on the second interface 10 through the second supporting through hole flange 7, the second supporting fixing flange 8 and the second screw 24. The second interface 10 is fixedly arranged on the base 14. The hand wheel screw 13 is mounted on a nut bracket 26 by a first nut 11, a second nut 12 and a first screw 23. The nut bracket 26 is fixedly arranged on the base 14.
Thereby, the first vibration head 5, the second vibration head 6 and the hand wheel screw 13 are all detachably fixed. And after the friction between the first friction group and the first rolling body is finished, removing the first friction group and the first rolling body, and replacing the second friction group and the second rolling body.
The electromagnetically treated steel balls 15, the first and second vibrating heads 5 and 6 in the second friction group, and the hand wheel screw 13 are mounted to exactly the same positions as when the second friction group and the second rolling body are rubbed. Opening the first control box 16 and the second control box 18 to enable the vibration frequency of the first vibration head 5 in the second friction group to be the same as that of the first vibration head 5 in the first friction group; the second vibrating head 6 in the second friction group has the same vibration frequency as the second vibrating head 6 in the first friction group. Likewise, the vibration frequencies of the first vibration head 5 and the second vibration head 6 in the second friction group are different. When the time for which the electromagnetically treated steel ball 15 and the second friction group rub against each other is the same as that for the electromagnetically untreated steel ball 15 and the first friction group, the first control box 16 and the second control box 18 are closed.
As shown in fig. 1, the masses of the first and second rolling elements, the first and second friction groups, and the friction plate after friction are compared 105, respectively.
In this embodiment, under the same friction condition, the total mass of the first rolling element and the first friction group after mutual friction is compared with the total mass of the second rolling element and the second friction group after electromagnetic treatment.
Example two
As shown in fig. 1, a test method for evaluating the performance of a bearing rolling element according to an embodiment of the present application includes:
101. acquiring the same first rolling body and second rolling body, the same first friction group and second friction group; specifically:
1011. acquiring a first rolling body and a second rolling body which are the same in material, size and mass;
1012. a first friction group and a second friction group are obtained, which are all the same in material, size and mass.
The first friction group and the second friction group comprise a plurality of friction pairs;
and corresponding friction pair materials, sizes and masses in the first friction group and the second friction group are the same.
Each friction pair is arranged on the end face of the corresponding vibration head; at least one friction pair is positioned at an eccentric position corresponding to the end face of the vibrating head.
102. The first rolling body and the first friction group are rubbed mutually, after a preset time is reached, the friction is stopped, and the mass of the first rolling body and the mass of the first friction group are recorded; specifically:
1021. each friction pair in the first friction group is mounted on the end surfaces of different vibrating heads; each vibrating head in the first friction group is correspondingly connected with an ultrasonic generator;
1022. each vibrating head in the first friction group clamps and fixes the first rolling body between the end surfaces of each friction pair;
1023. starting each ultrasonic generator to enable the vibration head corresponding to the first friction group to vibrate;
1024. the first rolling bodies and the end surfaces of the friction pairs in the first friction group are in friction loss.
103. Carrying out electromagnetic treatment on the second rolling bodies;
104. under the same friction condition as the first rolling body and the first friction group, the electromagnetically treated second rolling body and the second friction group are rubbed mutually, after a preset time is reached, the friction is stopped, and the mass of the second rolling body and the mass of the second friction group are recorded; specifically:
1041. each friction pair in the second friction group is mounted on the end surfaces of different vibrating heads; each vibration head of the second friction group is correspondingly connected with an ultrasonic generator;
1042. the vibration heads of the second friction group clamp and fix the second rolling bodies after electromagnetic treatment between the end surfaces of the friction pairs; the second rolling bodies are positioned at the same positions as the first rolling bodies; the positions of the vibrating heads and the friction pairs of the second friction group are the same as the positions of the corresponding vibrating heads and friction pairs in the first friction group;
1043. starting each ultrasonic generator to enable the vibration head corresponding to the second friction group to vibrate; the vibration frequency of each vibration head is the same as the vibration frequency of the corresponding vibration head in the first friction group;
1044. the second rolling body after electromagnetic treatment and the end surfaces of each friction pair in the second friction group are mutually rubbed and lost.
105. And comparing the masses of the first rolling body and the second rolling body after friction, and the first friction group and the second friction group respectively.
As shown in fig. 3, in the bearing rolling element test apparatus of the present embodiment:
a first friction pair 20 is embedded in the end face of the first vibration head 5;
when the first ultrasonic generator vibrates, the rolling element first friction pair 20 abuts against each other and wears away each other.
A second friction pair 21 is embedded in the end face of the second vibration head 6;
when the second ultrasonic generator vibrates, the rolling bodies are abutted against the second friction pair 21 and worn away from each other.
A third friction pair 22 is embedded in the end face of the top end of the hand wheel lead screw 13;
when the first ultrasonic generator and/or the second ultrasonic generator vibrate, the rolling bodies also bear against the third friction pair 22 and wear against each other.
As shown in fig. 3, at least one of the first friction pair 20 and the second friction pair 21 is eccentrically disposed.
The first friction pair 20 is provided at an eccentric position of the end face of the first vibration head 5, and/or the second friction pair 21 is provided at an eccentric position of the end face of the second vibration head 6.
The purpose of setting the friction pair in the eccentric position is: when the vibrating head vibrates, the steel ball 15 is rolled, so that the actual motion state of the steel ball 15 in the bearing can be simulated, and various wear and tear consumption can be generated.
The first friction pair 20 is detachably fixed in the first vibration head 5;
the second friction pair 21 is detachably fixed in the second vibration head 6;
the third friction pair 22 is detachably fixed in the top end of the hand wheel screw 13.
In the present embodiment, the steel ball 15 is in contact with only the first friction pair 20, the second friction pair 21, and the third friction pair 22.
The other structures are the same as those of the device in the first embodiment, and will not be described here again.
In the first embodiment, since the mass of the first vibration head 5, the second vibration head 6 and the hand wheel screw 13 needs to be measured before and after each experiment, the disassembly link is complicated. In order to simplify the disassembly and test steps, in the present embodiment, a first friction pair 20, a second friction pair 21 and a third friction pair 22 are respectively provided in the end surfaces of the first vibration head 5, the second vibration head 6 and the hand wheel screw 13.
The test method of this embodiment differs from that of the first embodiment in that:
in the present embodiment, the first rolling elements wear and consume with each other the first friction pair 20, the second friction pair 21, and the third friction pair 22. After mutual friction, the first rolling body is replaced by the second rolling body subjected to electromagnetic treatment, and the three friction pairs of the first friction group are replaced by the three friction pairs of the second friction group. The remaining test steps were identical.
The test results are shown in table 1:
in this example 3 sets of comparative tests were performed with steel balls 15 of different sizes and materials. The number of steel balls and friction pairs in each group of comparison tests is multiple, and the mass is averaged.
In this embodiment, the friction pairs are all white steel cutter blocks with a size Φ10×9.5mm, i.e., the first friction pair 20, the second friction pair 21, and the third friction pair 22 are all the same in size and material.
The rubbing time period was 1 hour:
as shown in table 2, the wear rate change after passing the friction test with respect to the three groups of steel balls not subjected to electromagnetic treatment under the same friction conditions is as follows: -49.5%, -46%, -49.8%.
As can be seen from two groups of friction tests of steel balls with different materials and different sizes, the total mass of the steel balls subjected to electromagnetic treatment after passing through the friction test and the corresponding friction pair is higher than that of the steel balls not subjected to electromagnetic treatment after passing through the friction test. That is, the amount of wear of the electromagnetically treated steel balls is smaller than those of non-electromagnetically treated steel balls.
TABLE 1
TABLE 2
It is clear from this that the electromagnetically treated rolling element is superior in terms of hardness in use to the rolling element which has not been electromagnetically treated.
The embodiment of the application provides wear data for the rolling element before and after electromagnetic treatment and provides data support for the process of rapidly evaluating the service performance of the rolling element.
It should be understood that the specific order or hierarchy of steps in the processes disclosed are examples of exemplary approaches. Based on design preferences, it is understood that the specific order or hierarchy of steps in the processes may be rearranged without departing from the scope of the present disclosure. The accompanying method claims present elements of the various steps in a sample order, and are not meant to be limited to the specific order or hierarchy presented.
In the foregoing detailed description, various features are grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments of the subject matter require more features than are expressly recited in each claim. Rather, as the following claims reflect, application lies in less than all features of a single disclosed embodiment. Thus the following claims are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate preferred embodiment of this application.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. As will be apparent to those skilled in the art; various modifications to these embodiments will be readily apparent, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing description includes examples of one or more embodiments. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the aforementioned embodiments, but one of ordinary skill in the art may recognize that many further combinations and permutations of various embodiments are possible. Accordingly, the embodiments described herein are intended to embrace all such alterations, modifications and variations that fall within the scope of the appended claims. Furthermore, as used in the specification or claims, the term "comprising" is intended to be inclusive in a manner similar to the term "comprising," as interpreted when employed as a transitional word in a claim. Furthermore, any use of the term "or" in the specification of the claims is intended to mean "non-exclusive or".
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the application, and is not meant to limit the scope of the application, but to limit the application to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the application are intended to be included within the scope of the application.
Claims (10)
1. A test method for evaluating the performance of a bearing rolling element, comprising:
acquiring the same first rolling body and second rolling body, the same first friction group and second friction group;
the first rolling body and the first friction group are rubbed mutually, after a preset time is reached, the friction is stopped, and the mass of the first rolling body and the mass of the first friction group are recorded;
carrying out electromagnetic treatment on the second rolling bodies;
under the same friction condition as the first rolling body and the first friction group, the electromagnetically treated second rolling body and the second friction group are rubbed mutually, after a preset time is reached, the friction is stopped, and the mass of the second rolling body and the mass of the second friction group are recorded;
and comparing the masses of the first rolling body and the second rolling body after friction, and the first friction group and the second friction group respectively.
2. The test method for evaluating the performance of rolling elements of a bearing according to claim 1, wherein said obtaining identical first and second rolling elements, identical first and second friction groups, comprises:
acquiring a first rolling body and a second rolling body which are the same in material, size and mass;
a first friction group and a second friction group are obtained, which are all the same in material, size and mass.
3. The test method for evaluating the performance of a bearing rolling element according to claim 2, wherein the first friction group and the second friction group include a plurality of vibrating heads therein;
the corresponding vibrating heads in the first friction group and the second friction group are the same in material, size and mass.
4. The test method for evaluating the performance of a bearing rolling element according to claim 2, wherein the first friction group and the second friction group include a plurality of friction pairs;
and corresponding friction pair materials, sizes and masses in the first friction group and the second friction group are the same.
5. The test method for evaluating the performance of a rolling element of a bearing according to claim 4, wherein each friction pair is provided at an end face of a corresponding vibration head;
at least one friction pair is positioned at an eccentric position corresponding to the end face of the vibrating head.
6. A test method for evaluating the performance of a bearing rolling element according to claim 3, wherein said rubbing the first rolling element against the first friction group comprises:
each vibrating head of the first friction group clamps and fixes the first rolling body between the end surfaces of each vibrating head; at least one contact point of the contact points of the first rolling bodies and the vibration heads is positioned at an eccentric position corresponding to the end face of the vibration head; each vibrating head in the first friction group is correspondingly connected with an ultrasonic generator;
starting each ultrasonic generator to enable the vibration head corresponding to the first friction group to vibrate;
the first rolling bodies and the end surfaces of the vibrating heads in the first friction group are in friction loss.
7. The method for evaluating the performance of a bearing rolling element according to claim 5, wherein the rubbing the first rolling element against the first friction group comprises:
each friction pair in the first friction group is mounted on the end surfaces of different vibrating heads; each vibrating head in the first friction group is correspondingly connected with an ultrasonic generator;
each vibrating head in the first friction group clamps and fixes the first rolling body between the end surfaces of each friction pair;
starting each ultrasonic generator to enable the vibration head corresponding to the first friction group to vibrate;
the first rolling bodies and the end surfaces of the friction pairs in the first friction group are in friction loss.
8. The test method for evaluating the performance of a rolling element of a bearing according to claim 6, wherein the electromagnetically treated second rolling element and the second friction group are rubbed against each other under the same friction condition as the first rolling element and the first friction group, specifically comprising:
the vibration heads of the second friction group clamp and fix the second rolling bodies after electromagnetic treatment between the end surfaces of the vibration heads; the second rolling bodies are positioned at the same positions as the first rolling bodies; the positions of the vibrating heads of the second friction group are the same as the positions of the corresponding vibrating heads in the first friction group; each vibration head of the second friction group is correspondingly connected with an ultrasonic generator;
starting each ultrasonic generator to enable the vibration head corresponding to the second friction group to vibrate; the vibration frequency of each vibration head is the same as the vibration frequency of the corresponding vibration head in the first friction group;
the electromagnetic treated second rolling bodies and the end surfaces of the vibrating heads in the second friction group are in friction loss.
9. The test method for evaluating the performance of a rolling element of a bearing according to claim 7, wherein the electromagnetically treated second rolling element and the second friction group are rubbed against each other under the same friction condition as the first rolling element and the first friction group, specifically comprising:
each friction pair in the second friction group is mounted on the end surfaces of different vibrating heads; each vibration head of the second friction group is correspondingly connected with an ultrasonic generator;
the vibration heads of the second friction group clamp and fix the second rolling bodies after electromagnetic treatment between the end surfaces of the friction pairs; the second rolling bodies are positioned at the same positions as the first rolling bodies; the positions of the vibrating heads and the friction pairs of the second friction group are the same as the positions of the corresponding vibrating heads and friction pairs in the first friction group;
starting each ultrasonic generator to enable the vibration head corresponding to the second friction group to vibrate; the vibration frequency of each vibration head is the same as the vibration frequency of the corresponding vibration head in the first friction group;
the second rolling body after electromagnetic treatment and the end surfaces of each friction pair in the second friction group are mutually rubbed and lost.
10. The test method for evaluating the performance of a rolling element of a bearing according to claim 5, wherein the vibration frequencies of the respective vibration heads are different.
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