CN114088398A - 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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- CN114088398A CN114088398A CN202111129778.9A CN202111129778A CN114088398A CN 114088398 A CN114088398 A CN 114088398A CN 202111129778 A CN202111129778 A CN 202111129778A CN 114088398 A CN114088398 A CN 114088398A
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- 238000005096 rolling process Methods 0.000 title claims abstract description 182
- 238000010998 test method Methods 0.000 title claims abstract description 21
- 239000000463 material Substances 0.000 claims description 24
- 238000012360 testing method Methods 0.000 abstract description 18
- 229910000831 Steel Inorganic materials 0.000 description 40
- 239000010959 steel Substances 0.000 description 40
- 238000000034 method Methods 0.000 description 21
- 230000008569 process Effects 0.000 description 8
- 238000005299 abrasion Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
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- 238000001514 detection method Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
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- 239000007769 metal material Substances 0.000 description 1
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Abstract
The invention 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: obtaining a first rolling body and a second rolling body which are same and a first friction group and a second friction group which are same; the first rolling body and the first friction group are mutually rubbed, after a preset time is reached, the friction is stopped, and the mass of the first rolling body and the first friction group at the moment is recorded; performing electromagnetic treatment on the second rolling body; under the same friction condition with the first rolling body and the first friction group, the second rolling body and the second friction group after electromagnetic treatment are mutually rubbed, after the preset time is reached, the friction is stopped, and the mass of the second rolling body and the second friction group at the moment is recorded; and respectively comparing the masses of the first and second rubbed rolling bodies and the first and second rubbed groups. The invention can be used for testing the rolling element, thereby providing data support for evaluating the performance of the rolling element.
Description
Technical Field
The invention 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 arranged uniformly between the two rings in the bearing, usually by means of a cage, and act as rolling and transmission forces; the rolling elements are load bearing parts whose shape, size and number determine the load bearing capacity and high speed running performance of the bearing.
The bearing is an important part in the modern mechanical equipment. Its main function is to support the mechanical rotator, reduce the friction coefficient in its motion process and ensure its rotation precision. The rolling body is the core element in the rolling bearing, and because of the existence of the rolling body, rolling friction exists between opposite moving surfaces. The rolling bodies of the rolling bearing mainly comprise a steel ball and a roller.
When the performance index of the rolling bearing does not meet the use requirement due to a plurality of reasons in the use process, the rolling bearing fails or is damaged; common failure modes are fatigue spalling, wear, plastic deformation, corrosion, burn, electrical corrosion, cage damage, and the like. Fatigue is the major failure mode of bearings, and for rolling bearings it is primarily contact fatigue.
The rolling body is mainly subjected to hardness detection to control the quality in the production process, but the single hardness cannot completely reflect the service performance of the rolling body; and devices related to the rolling body are mainly detection devices, strengthening devices and the like, and no special test device is used for rapidly evaluating the fatigue resistance of the rolling body.
Disclosure of Invention
In order to solve the technical problems, the test method for evaluating the performance of the rolling body of the bearing provided by the invention can be used for quickly testing the rolling body, so that data support is provided for evaluating the performance of the rolling body.
The invention provides a test method for evaluating the performance of a bearing rolling body, which comprises the following steps:
obtaining a first rolling body and a second rolling body which are same and a first friction group and a second friction group which are same;
the first rolling body and the first friction group are mutually rubbed, after a preset time is reached, the friction is stopped, and the mass of the first rolling body and the first friction group at the moment is recorded;
performing electromagnetic treatment on the second rolling body;
under the same friction condition with the first rolling body and the first friction group, the second rolling body and the second friction group after electromagnetic treatment are mutually rubbed, after the preset time is reached, the friction is stopped, and the mass of the second rolling body and the second friction group at the moment is recorded;
and respectively comparing the masses of the first and second rubbed rolling bodies and the first and second rubbed groups.
Further, the obtaining of the same first rolling element and second rolling element, and the same first friction group and second friction group specifically includes:
obtaining a first rolling body and a second rolling body which are same in material, size and mass;
a first friction pack and a second friction pack of the same material, size and mass are obtained.
Furthermore, the first friction group and the second friction group comprise a plurality of vibrating heads;
the materials, the sizes and the masses of the corresponding vibration heads in the first friction group and the second friction group are the same.
Furthermore, the first friction group and the second friction group comprise a plurality of friction pairs;
and the materials, the sizes and the masses of the corresponding friction pairs 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 located at an eccentric position corresponding to the end face of the oscillating head.
In the above technical solution, the rubbing the first rolling element and the first friction group with each other 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 of the contact points of the first rolling body and each vibration head is positioned at an eccentric position corresponding to the end surface of the vibration head; each vibration 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 body and the end face of each vibration head in the first friction group are subjected to mutual friction loss.
Further, the rubbing the first rolling element and the first friction group against each other specifically includes:
mounting each friction pair in the first friction group to different vibration head end surfaces; each vibration 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 body and the end surface of each friction pair in the first friction group are subjected to mutual friction loss.
Further, the rubbing the electromagnetically treated second rolling element and the second friction group with each other under the same rubbing condition as that of the first rolling element and the first friction group specifically includes:
each vibrating head of the second friction group clamps and fixes the electromagnetically-treated second rolling body between the end surfaces of each vibrating head; the position of the second rolling body is the same as that of the first rolling body; the position of each vibration head of the second friction group is the same as that of the corresponding vibration head 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 that of the corresponding vibration head in the first friction group;
and the electromagnetically processed second rolling body and the end surface of each vibration head in the second friction group are subjected to mutual friction loss.
Still further, rubbing the electromagnetically treated second rolling element and the second friction group with each other under the same friction condition as that of the first rolling element and the first friction group specifically includes:
mounting each friction pair in the second friction group to different vibration head end surfaces; each vibration head of the second friction group is correspondingly connected with an ultrasonic generator;
each vibrating head of the second friction group clamps and fixes the electromagnetically-treated second rolling body between the end surfaces of each friction pair; the position of the second rolling body is the same as that of the first rolling body; the positions of each vibration head and each friction pair of the second friction group are the same as the positions of the corresponding vibration head and the corresponding friction pair 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 that of the corresponding vibration head in the first friction group;
and the electromagnetically treated second rolling body and the end surfaces of the friction pairs in the second friction group are subjected to mutual friction loss.
Preferably, the vibration frequencies of the respective vibration heads are different.
In the invention, the friction group and the rolling body which is subjected to electromagnetic treatment and is not subjected to electromagnetic treatment are mutually abraded, so that the quality of the rolling body is consumed, and corresponding abrasion data are generated and compared, so that data support is provided for rapidly evaluating the service performance of the rolling body, and particularly data support for the performance change of the rolling body which is subjected to electromagnetic treatment is provided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of a method of an embodiment of the present invention;
FIG. 2 is a schematic top view of an apparatus according to one embodiment of the present invention;
FIG. 3 is a schematic diagram of a position structure of a friction pair according to a second embodiment of the present invention;
FIG. 4 is a schematic front view of the embodiment of the present invention (the first control box and the second control box are omitted and enlarged on a same scale);
fig. 5 is a left side view of fig. 4.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The "electromagnetic field coupling strengthening" technique is a technique for improving the performance of a metal material by applying a specific electromagnetic coupling field to an object to be processed. The method is mainly characterized in that under the premise that a processed object absorbs specific energy, lattice dislocation and dislocation winding areas in the material are displaced and differentiated, so that internal stress, texture and microstructure of the material are changed to a certain extent; effectively passivate and heal the partial micro-cracks, thereby greatly improving the macroscopic mechanical properties of the material, such as fatigue strength, hardness, elongation and the like.
From this, it can be concluded that: the electromagnetically treated rolling elements may be superior in fatigue resistance to non-electromagnetically treated rolling elements. The test method for evaluating the performance of the bearing rolling body in the embodiment can wear the rolling body subjected to electromagnetic treatment and the rolling body not subjected to electromagnetic treatment, and then compare the wear data of the rolling body subjected to electromagnetic treatment and the rolling body not subjected to electromagnetic treatment. The abrasion data are stated to provide data support for confirming the conclusion, so that the service performance of the rolling body can be rapidly evaluated.
Example one
As shown in fig. 1, the test method for evaluating the performance of a bearing rolling element according to an embodiment of the present invention includes:
101. obtaining a first rolling body and a second rolling body which are same and a first friction group and a second friction group which are same; specifically, the method comprises the following steps:
1011. obtaining a first rolling body and a second rolling body which are same in material, size and mass;
1012. a first friction pack and a second friction pack of the same material, size and mass are obtained.
As shown in fig. 2, in the bearing rolling element test apparatus of the present embodiment, the first rolling elements and the second rolling elements are both steel balls 15. Since the two steel balls 15 are completely the same in terms of shape, material, mass, and the like, it is desirable to find two completely the same steel balls 15 in an ideal state.
In reality, however, it is difficult to have two identical steel balls 15. Therefore, in the process of actual test, a plurality of steel balls with basically consistent size and quality and the same material are taken and divided into two groups with the same quantity. And making the average value of the mass of the two groups of steel balls identical.
In the present embodiment, two steel balls 15 are taken as an example. Of course, the test of a plurality of steel balls is also within the scope of the present invention.
The first friction group and the second friction group comprise a plurality of vibrating heads;
the materials, the sizes and the masses of the corresponding vibration heads in the first friction group and the second friction group are the same.
As shown in fig. 2, in the present embodiment, each friction set includes: a first vibrating head 5, a second vibrating head 6 and a hand wheel screw 13.
As shown in fig. 1, 102, rubbing the first rolling element and the first friction group with each other, stopping rubbing after a predetermined period of time, and recording the mass of the first rolling element and the first friction group at the moment; specifically, the method comprises the following steps:
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 of the contact points of the first rolling body and each vibration head is positioned at an eccentric position corresponding to the end surface of the vibration head; each vibration 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 element is relatively fixed between the first vibrating head 5, the second vibrating head 6 and the top end of the hand wheel screw 13.
The contact point of the steel ball 15 and the first vibrating head 5 is located at the eccentric position of the end face of the first vibrating head 5, the contact point of the steel ball 15 and the second vibrating head 6 is located at the central position of the end face of the second vibrating head 6, and the contact point of the steel ball 15 and the end face of the top end of the hand wheel lead screw 13 is located at the central position of the end face 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 disposed so that the steel ball 15 can roll when the vibration head vibrates. The above arrangement allows better simulation of the actual state of motion of the steel ball 15 in the bearing during the test and may result in varied wear losses.
In the present embodiment, the first rolling elements (steel balls 15) are steel balls that have not been subjected to electromagnetic treatment. The ultrasonic generator of the first vibrating head 5 includes: a first vibratory rod 1 and a first control box 16. The ultrasonic generator of the second vibrating 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 vibratory rod 1 through a first lead wire 17. The second control box 18 is connected to the other end of the second vibratory rod 9 through a second lead 19.
In this embodiment, the hand wheel screw 13 is a fixing device, is not connected with an ultrasonic generating device, and belongs to passive friction. In other embodiments, a vibration head having the same function as the first vibration head 5 and the second vibration head 6 may be provided at the position of the hand wheel screw 13.
1022. Starting each ultrasonic generator to enable the vibration head corresponding to the first friction group to vibrate;
1023. the first rolling body and the end face of each vibration head in the first friction group are subjected to mutual friction loss.
In the present embodiment, the first control box 16 controls the start and stop of the first oscillating head 5; the second control box 18 controls the start and stop of the second oscillating head 6. The first vibrating head 5 may be a vibrating square head with a vibration frequency of 18 KHz. The second vibrating head 6 is a vibrating round head, and the vibration frequency is 20 KHz. First oscillating head 5 and second oscillating head 6 have different shapes and different oscillation frequencies, and thus can generate various wear consumptions of the rolling elements.
At this time, the first rolling element, first vibration head 5, second vibration head 6, and hand screw 13 are all worn, and the mass after friction is changed from before friction.
As shown in fig. 1, the second rolling element is subjected to electromagnetic treatment 103;
in this embodiment, the electromagnetic treatment process is:
step1, putting the second rolling body (another steel ball 15) into the processing box;
step2, placing the processing box into an electromagnetic processing device;
step3, starting an electromagnetic treatment device to carry out electromagnetic treatment on the steel ball 15 in the treatment box;
step4, after the preset time is reached, closing the electromagnetic treatment equipment, and taking out the steel ball 15 after the electromagnetic treatment.
As shown in fig. 1, 104, rubbing the electromagnetically treated second rolling element and the second friction group with each other under the same friction condition as the first rolling element and the first friction group, stopping rubbing after a predetermined period of time, and recording the mass of the second rolling element and the second friction group at the moment; specifically, the method comprises the following steps:
1041. each vibrating head of the second friction group clamps and fixes the electromagnetically-treated second rolling body between the end surfaces of each vibrating head; the position of the second rolling body is the same as that of the first rolling body; the position of each vibration head of the second friction group is the same as that of the corresponding vibration head 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 that of the corresponding vibration head in the first friction group;
1043. and the electromagnetically processed second rolling body and the end surface of each vibration head in the second friction group are subjected to mutual friction loss.
In the present embodiment, first vibratory head 5 and second vibratory head 6 in the second friction group are the same (material, dimensions, and mass are all the same) as first vibratory head 5 and second vibratory head 6 of the first friction group. The hand wheel screws 13 belonging to different friction groups are also identical (material, size and mass are identical). Of course, as with the two steel balls 15, in a practical test, it is difficult to have the same vibrating head and the same handwheel screw, so the first friction group and the second friction group may be processed by averaging as with the steel balls 15. However, in the present embodiment, two friction sets are taken as an example.
As shown in fig. 2, 4 and 5, the first vibratory head 5 is mounted at one end of the first vibratory rod 1. The second vibratory head 6 is mounted at one end of a second vibratory rod 9. First vibrating arm 1 is through first support mounting flange 2, first support via hole flange 3 and third screw 25, detachable fixed mounting on first interface 4. The first interface 4 is fixedly arranged on the base 14. The second vibrating rod 9 is detachably and fixedly mounted on the second interface 10 through a second supporting via hole flange 7, a second supporting fixing flange 8 and a second screw 24. The second interface 10 is fixedly arranged on the base 14. The hand wheel screw 13 is mounted on the nut bracket 26 through the first nut 11, the second nut 12 and the first screw 23. The nut bracket 26 is fixedly disposed on the base 14.
Therefore, the first vibrating head 5, the second vibrating 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, the first friction group and the first rolling body are removed, and the second friction group and the second rolling body are replaced.
The positions of the steel ball 15 subjected to electromagnetic treatment, the first vibration head 5 and the second vibration head 6 in the second friction group and the hand wheel lead screw 13 are completely the same as the positions of the second friction group and the second rolling body during friction. Opening a first control box 16 and a 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 oscillating head 6 of the second friction group has the same oscillation frequency as the second oscillating head 6 of the first friction group. Likewise, the first oscillating head 5 and the second oscillating head 6 in the second friction group have different oscillation frequencies. When the time for the steel ball 15 after the electromagnetic treatment to rub against the second friction set is the same as the time for the steel ball 15 not subjected to the electromagnetic treatment to rub against the first friction set, 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 and the first and second friction groups after friction are compared 105.
In the present embodiment, the total mass of the first rolling elements and the first friction group subjected to mutual friction under the same friction condition is compared with the total mass of the second rolling elements and the second friction group subjected to electromagnetic treatment.
Example two
As shown in fig. 1, the test method for evaluating the performance of a bearing rolling element according to an embodiment of the present invention includes:
101. obtaining a first rolling body and a second rolling body which are same and a first friction group and a second friction group which are same; specifically, the method comprises the following steps:
1011. obtaining a first rolling body and a second rolling body which are same in material, size and mass;
1012. a first friction pack and a second friction pack of the same material, size and mass are obtained.
The first friction group and the second friction group comprise a plurality of friction pairs;
and the materials, the sizes and the masses of the corresponding friction pairs in the first friction group and the second friction group are the same.
Each friction pair is arranged on the end surface of the corresponding vibration head; at least one friction pair is located at an eccentric position corresponding to the end face of the oscillating head.
102. The first rolling body and the first friction group are mutually rubbed, after a preset time is reached, the friction is stopped, and the mass of the first rolling body and the first friction group at the moment is recorded; specifically, the method comprises the following steps:
1021. mounting each friction pair in the first friction group to different vibration head end surfaces; each vibration 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 body and the end surface of each friction pair in the first friction group are subjected to mutual friction loss.
103. Performing electromagnetic treatment on the second rolling body;
104. under the same friction condition with the first rolling body and the first friction group, the second rolling body and the second friction group after electromagnetic treatment are mutually rubbed, after the preset time is reached, the friction is stopped, and the mass of the second rolling body and the second friction group at the moment is recorded; specifically, the method comprises the following steps:
1041. mounting each friction pair in the second friction group to different vibration head end surfaces; each vibration head of the second friction group is correspondingly connected with an ultrasonic generator;
1042. each vibrating head of the second friction group clamps and fixes the electromagnetically-treated second rolling body between the end surfaces of each friction pair; the position of the second rolling body is the same as that of the first rolling body; the positions of each vibration head and each friction pair of the second friction group are the same as the positions of the corresponding vibration head and the corresponding friction pair 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 that of the corresponding vibration head in the first friction group;
1044. and the electromagnetically treated second rolling body and the end surfaces of the friction pairs in the second friction group are subjected to mutual friction loss.
105. And respectively comparing the masses of the first and second rubbed rolling bodies and the first and second rubbed groups.
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 vibrating head 5;
when the first ultrasonic generator vibrates, the rolling element first friction pairs 20 are abutted and worn away from each other.
A second friction pair 21 is embedded in the end face of the second vibrating head 6;
when the second ultrasonic generator vibrates, the rolling bodies abut against the second friction pair 21 and are worn and consumed mutually.
A third friction pair 22 is embedded in the end surface of the top end of the hand wheel lead screw 13;
when the first and/or second ultrasonic generator vibrates, the rolling bodies also bear against the third friction pair 22 and wear away from 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 purpose of setting the friction pair in an eccentric position is: when the vibrating head vibrates, the steel ball 15 rolls, the actual motion state of the steel ball 15 in the bearing can be simulated, and various abrasion consumptions can be generated.
The first friction pair 20 is detachably fixed in the first vibrating head 5;
the second friction pair 21 is detachably fixed in the second vibrating 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 rest of the structure is the same as the device structure in the first embodiment, and is not described herein again.
In the first embodiment, 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, so that the disassembly link is complicated. In order to simplify the disassembly and testing process, in the present embodiment, a first friction pair 20, a second friction pair 21 and a third friction pair 22 are respectively disposed in the end surfaces of the first vibration head 5, the second vibration head 6 and the hand wheel screw 13.
The experimental method of this example differs from the first example in that:
in the present exemplary embodiment, the first rolling elements and the first, second and third friction partners 20, 21, 22 wear away from one another. After mutual friction, the first rolling body is replaced by the second rolling body after 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 procedures were the same.
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 the steel balls and the friction pairs in each group of comparison tests is multiple, and the quality is averaged.
In the present embodiment, the friction pairs are all white steel blocks with a size of phi 10 x 9.5mm, i.e. the size and material of the first friction pair 20, the second friction pair 21 and the third friction pair 22 are all the same.
The length of rubbing was 1 hour:
as shown in table 2, after the three groups of steel balls subjected to electromagnetic treatment pass the friction test, the change rate of the wear loss of the three groups of steel balls not subjected to electromagnetic treatment under the same friction condition is: 49.5%, 46% and 49.8%.
Two groups of friction tests of steel balls made of different materials and different sizes show that the total mass of the steel balls subjected to electromagnetic treatment and corresponding friction pairs after the friction tests is higher than that of the steel balls not subjected to electromagnetic treatment and corresponding friction pairs after the friction tests. That is, the amount of wear of the steel balls subjected to the electromagnetic treatment is smaller than that of the steel balls not subjected to the electromagnetic treatment.
TABLE 1
TABLE 2
It is understood that the rolling elements subjected to the electromagnetic treatment are superior in hardness performance in use to those not subjected to the electromagnetic treatment.
The embodiment of the invention provides wear data before and after electromagnetic treatment for the rolling bodies and provides data support for the process of rapidly evaluating the service performance of the rolling bodies.
It should be understood that the specific order or hierarchy of steps in the processes disclosed is an example of exemplary approaches. Based upon 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 intended 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, invention lies in less than all features of a single disclosed embodiment. Thus, the following claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. 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.
What has been described above 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, to the extent that the term "includes" is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term "comprising" as "comprising" is 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 a "non-exclusive or".
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A test method for evaluating the performance of a bearing rolling element, comprising:
obtaining a first rolling body and a second rolling body which are same and a first friction group and a second friction group which are same;
the first rolling body and the first friction group are mutually rubbed, after a preset time is reached, the friction is stopped, and the mass of the first rolling body and the first friction group at the moment is recorded;
performing electromagnetic treatment on the second rolling body;
under the same friction condition with the first rolling body and the first friction group, the second rolling body and the second friction group after electromagnetic treatment are mutually rubbed, after the preset time is reached, the friction is stopped, and the mass of the second rolling body and the second friction group at the moment is recorded;
and respectively comparing the masses of the first and second rubbed rolling bodies and the first and second rubbed groups.
2. The test method for evaluating the performance of a bearing rolling body according to claim 1, wherein the obtaining of the same first rolling body and second rolling body, the same first friction group and second friction group specifically comprises:
obtaining a first rolling body and a second rolling body which are same in material, size and mass;
a first friction pack and a second friction pack of the same material, size and mass are obtained.
3. The test method for evaluating the performance of a bearing rolling element according to claim 2, wherein the first friction pack and the second friction pack comprise a plurality of vibrating heads;
the materials, the sizes and the masses of the corresponding vibration heads in the first friction group and the second friction group are the same.
4. The test method for evaluating the performance of a bearing rolling element according to claim 2, wherein the first friction pack and the second friction pack comprise a plurality of friction pairs;
and the materials, the sizes and the masses of the corresponding friction pairs in the first friction group and the second friction group are the same.
5. The test method for evaluating the performance of a bearing rolling element according to claim 4, wherein each friction pair is provided on an end face of the corresponding oscillating head;
at least one friction pair is located at an eccentric position corresponding to the end face of the oscillating head.
6. The test method for evaluating the performance of a bearing rolling element according to claim 3, wherein the step of rubbing the first rolling element and the first friction group with each other specifically comprises the steps of:
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 of the contact points of the first rolling body and each vibration head is positioned at an eccentric position corresponding to the end surface of the vibration head; each vibration 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 body and the end face of each vibration head in the first friction group are subjected to mutual friction loss.
7. The test method for evaluating the performance of a bearing rolling element according to claim 5, wherein the step of rubbing the first rolling element and the first friction group with each other comprises the following steps:
mounting each friction pair in the first friction group to different vibration head end surfaces; each vibration 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 body and the end surface of each friction pair in the first friction group are subjected to mutual friction loss.
8. The test method for evaluating the performance of the bearing rolling body according to claim 6, wherein the step of rubbing the electromagnetically treated second rolling body with the second rubbing group under the same rubbing condition as that of the first rolling body with the first rubbing group comprises the following steps:
each vibrating head of the second friction group clamps and fixes the electromagnetically-treated second rolling body between the end surfaces of each vibrating head; the position of the second rolling body is the same as that of the first rolling body; the position of each vibration head of the second friction group is the same as that of the corresponding vibration head 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 that of the corresponding vibration head in the first friction group;
and the electromagnetically processed second rolling body and the end surface of each vibration head in the second friction group are subjected to mutual friction loss.
9. The test method for evaluating the performance of the bearing rolling body according to claim 7, wherein the step of rubbing the electromagnetically treated second rolling body with the second rubbing group under the same rubbing condition as that of the first rolling body with the first rubbing group comprises the following steps:
mounting each friction pair in the second friction group to different vibration head end surfaces; each vibration head of the second friction group is correspondingly connected with an ultrasonic generator;
each vibrating head of the second friction group clamps and fixes the electromagnetically-treated second rolling body between the end surfaces of each friction pair; the position of the second rolling body is the same as that of the first rolling body; the positions of each vibration head and each friction pair of the second friction group are the same as the positions of the corresponding vibration head and the corresponding friction pair 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 that of the corresponding vibration head in the first friction group;
and the electromagnetically treated second rolling body and the end surfaces of the friction pairs in the second friction group are subjected to mutual friction loss.
10. The test method for evaluating the performance of a bearing rolling element according to claim 5, wherein the vibration frequency of each vibration head is different.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR980010408A (en) * | 1996-07-24 | 1998-04-30 | 박원훈 | Rolling friction and wear testing equipment for use in vacuum and special environmental atmospheres |
| CN204128826U (en) * | 2014-10-16 | 2015-01-28 | 杭州轴承试验研究中心有限公司 | A kind of large-scale fork truck door frame idler wheel bearing unit service life experiment system |
| CN107727396A (en) * | 2016-08-10 | 2018-02-23 | 西门子公司 | Bearing test equipment |
| CN110095218A (en) * | 2019-04-26 | 2019-08-06 | 杭州电子科技大学 | Measure the electromagnetic actuator device and its measurement method of Frictional Moment for Rolling Bearings |
| CN110579418A (en) * | 2019-11-06 | 2019-12-17 | 合肥工业大学 | lever loading type friction wear testing machine capable of controlling magnetic field environment |
| CN111272535A (en) * | 2020-02-11 | 2020-06-12 | 武汉科技大学 | Fretting sliding composite friction and wear test system and operation method thereof |
| CN111438075A (en) * | 2020-03-26 | 2020-07-24 | 浙江科技学院 | Rolling body surface detection device and rolling body surface detection method |
| CN111504831A (en) * | 2020-05-27 | 2020-08-07 | 河南科技大学 | Bearing steel ball friction and wear performance test bed, test frame and test method |
| DE102019219049A1 (en) * | 2019-12-06 | 2021-06-10 | Zf Friedrichshafen Ag | Measuring system for detecting slip in a roller bearing |
-
2021
- 2021-09-26 CN CN202111129778.9A patent/CN114088398B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR980010408A (en) * | 1996-07-24 | 1998-04-30 | 박원훈 | Rolling friction and wear testing equipment for use in vacuum and special environmental atmospheres |
| CN204128826U (en) * | 2014-10-16 | 2015-01-28 | 杭州轴承试验研究中心有限公司 | A kind of large-scale fork truck door frame idler wheel bearing unit service life experiment system |
| CN107727396A (en) * | 2016-08-10 | 2018-02-23 | 西门子公司 | Bearing test equipment |
| CN110095218A (en) * | 2019-04-26 | 2019-08-06 | 杭州电子科技大学 | Measure the electromagnetic actuator device and its measurement method of Frictional Moment for Rolling Bearings |
| CN110579418A (en) * | 2019-11-06 | 2019-12-17 | 合肥工业大学 | lever loading type friction wear testing machine capable of controlling magnetic field environment |
| DE102019219049A1 (en) * | 2019-12-06 | 2021-06-10 | Zf Friedrichshafen Ag | Measuring system for detecting slip in a roller bearing |
| CN111272535A (en) * | 2020-02-11 | 2020-06-12 | 武汉科技大学 | Fretting sliding composite friction and wear test system and operation method thereof |
| CN111438075A (en) * | 2020-03-26 | 2020-07-24 | 浙江科技学院 | Rolling body surface detection device and rolling body surface detection method |
| CN111504831A (en) * | 2020-05-27 | 2020-08-07 | 河南科技大学 | Bearing steel ball friction and wear performance test bed, test frame and test method |
Non-Patent Citations (1)
| Title |
|---|
| 赵彦玲;张经纬;侯新新;潘承怡;孙蒙蒙;: "微结构钢球展开轮增摩降磨特性分析", 哈尔滨理工大学学报, no. 05, pages 8 - 13 * |
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