CN113578696A - Clamping and vibrating device of plastic-impregnated bearing retainer - Google Patents
Clamping and vibrating device of plastic-impregnated bearing retainer Download PDFInfo
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- CN113578696A CN113578696A CN202110911603.7A CN202110911603A CN113578696A CN 113578696 A CN113578696 A CN 113578696A CN 202110911603 A CN202110911603 A CN 202110911603A CN 113578696 A CN113578696 A CN 113578696A
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- clamping
- retainer
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- holder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C13/00—Means for manipulating or holding work, e.g. for separate articles
- B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
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Abstract
The application discloses soak centre gripping vibrating device of moulding bearing retainer, it includes radial movement mechanism, fixture, vibrator and axial elevating system, wherein, the said radial movement mechanism includes driving piece and at least three moving member, the said driving piece drives the said moving member to follow the radial movement of the said retainer; the clamping mechanism comprises at least three clamping pieces, and the clamping pieces are connected with the moving piece and used for clamping the retainer; the vibrator is arranged on the clamping piece or the moving piece to vibrate the retainer; the axial lifting mechanism is arranged above the radial moving mechanism and connected with the radial moving mechanism so as to drive the retainer to move along the vertical direction. The application can remove the redundant outside plastic powder on the retainer, so that the plastic layer of the retainer is uniform, flat and firm.
Description
Technical Field
The invention relates to the technical field of bearing retainers, in particular to a clamping and vibrating device for a plastic-impregnated bearing retainer.
Background
Cage (i.e., bearing cage, also known as a bearing retainer) refers to a bearing component that partially encases all or part of the rolling elements and moves with them to isolate the rolling elements and generally also guide and retain them within the bearing. When the rolling bearing works, particularly when the load is complex and the rolling bearing rotates at high speed, the retainer bears large centrifugal force, impact and vibration, large sliding friction exists between the retainer and the rolling bearing, and a large amount of heat is generated. The combined effect of force and heat can lead to cage failure, and in severe cases, can cause cage burn and fracture. Therefore, the cage material is required to have good thermal conductivity, good wear resistance, and a small friction coefficient. Particularly in the field of wind power, a large bearing retainer is required to be used for a wind power product, the functional requirement on the bearing retainer is higher, the current bearing retainer in the field of wind power mainly adopts a metal main body outer plastic coating layer structure, the processing technology of a plastic layer mainly comprises two types of plastic spraying and plastic dipping, the product performance is analyzed, and the plastic dipping retainer is better.
However, the bearing retainer is when soaking the process of moulding, after the retainer takes out from moulding the powder, the powder of moulding that its surface is close to the metal covering is the shaping trend that melts, and the powder of moulding that is close to the outside more, because the temperature influence of retainer self weakens, lead to the outside to mould the powder and can't completely melt for moulding the layer, need get rid of the outside as early as possible this moment and mould the powder, it is even to make the thickness of moulding layer after the shaping, avoid influencing and mould the layer quality, receive the restriction of centre gripping frock at present, the vibration effect of retainer is relatively poor, cause unnecessary moulding the powder can not in time be got rid of, the work degree of difficulty of follow-up processing has been increased, and the vibrating structure is unreliable, lead to the centre gripping to become flexible easily, the vibrating process need consume more energy, urgent need to be solved.
The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.
Disclosure of Invention
In order to solve the technical problem explained in the background art, the application aims to provide the clamping vibration device for the plastic-impregnated bearing retainer, which can remove redundant outer plastic powder on the retainer, so that the plastic layer of the retainer is uniform, flat and firm.
In order to achieve the purpose, the technical scheme is as follows:
a clamping and vibrating device of a plastic-impregnated bearing retainer comprises a radial moving mechanism, a clamping mechanism, a vibrator and an axial lifting mechanism, wherein the radial moving mechanism comprises a driving part and at least three moving parts, and the driving part drives the moving parts to move along the radial direction of the retainer; the clamping mechanism comprises at least three clamping pieces, and the clamping pieces are connected with the moving piece and used for clamping the retainer; the vibrator is arranged on the clamping piece or the moving piece to vibrate the retainer; the axial lifting mechanism is arranged above the radial moving mechanism and connected with the radial moving mechanism so as to drive the retainer to move along the vertical direction.
From the above, when the holder is used for molding a layer, the axial lifting mechanism firstly moves the clamping mechanism to the direction in which the clamping piece can align with the part to be clamped of the holder, then the driving piece of the radial moving mechanism drives the moving piece to move so as to drive the clamping piece to move along the radial direction of the holder, when the clamping piece moves to the part to be clamped of the holder, the holder is clamped by the clamping piece, at the moment, the axial lifting mechanism moves, the holder is placed into the plastic dipping pool to be subjected to the plastic dipping process, then the axial lifting mechanism moves again, the holder is taken out from the plastic dipping pool, the plastic powder on the surface of the holder, which is close to the metal surface, is in a melting and shaping trend, the plastic powder which is closer to the outer side is weakened due to the influence of the temperature of the holder, the plastic layer cannot be completely melted, in order to avoid influencing the quality of the plastic layer, the plastic powder on the outer side needs to be removed as soon, at the moment, the vibrator is started, and the clamping piece or the moving piece is vibrated, the redundant outer side plastic powder on the retainer is removed by the vibration retainer, so that the plastic layer of the retainer is uniform, flat and firm, the integral structural stability and wear resistance of the retainer are ensured, and excessive impurity plastic powder generated in the process of friction between the retainer and the rolling body is avoided.
When the retainer is taken out from the plastic pool, each part is possible to have redundant plastic powder, the redundant plastic powder at each part of the retainer can be removed timely and fully, the quality of a plastic layer is improved, the vibrator is at least arranged to be three in the application and corresponds to the moving piece and the clamping piece one to one, and therefore vibration can be more fully and uniformly transmitted to the retainer.
The retainer is firmly clamped by the clamping piece, when vibration occurs to different positions on the retainer, forces in different directions can be generated on the retainer as a whole, and the retainer is deformed such as bending and twisting, so that the vibrator is set to synchronously vibrate in the application, the retainer regularly vibrates on the whole, and the retainer is prevented from being damaged in the vibration clamping process.
In order to remove the excessive outside molding powder on the retainer in time, the vibrator needs to be started quickly; based on the requirements of the application on the vibrator, the pneumatic vibrator is selected as a vibration source, the pneumatic vibrator takes compressed air as a power source, the air consumption is low, the device is safe and energy-saving, and the device is small in size, small in fault, rapid in stopping or starting, suitable for manual or automatic systems, and easy to install and maintain.
The driving piece can drive the moving piece along the radial movement who keeps the ware, including the radial movement that the driving piece linear drive moving piece kept the ware along keeping to quick accurate drive holder centre gripping keeps the ware, the driving piece can set up to screw rod driving piece or belt drive spare in this application from this.
The vibrator is when sending the vibration, moving member and driving piece may receive the vibration, inner structure may take place wearing and tearing, cause the holder to appear blocking when removing, vibrate, the insecure phenomenon of removal such as uncontrollable, consequently, when the vibrator vibrates, the primary structure that should make moving member and driving piece as far as possible does not receive the vibration influence, in order to avoid shadow holder along the reliability of keeping ware radial movement, therefore, this application sets up the moving member into including the movable block that connects gradually, spring assembly and connecting rod, the movable block is connected with the driving piece, the connecting rod is connected with the holder, the vibrator sets up in the connecting rod.
From above, when the vibrator vibrates, the spring assembly has directly or indirectly born the weight of structures such as holder, vibrator and retainer, consequently requires the structural strength and the elasticity of spring assembly better, and from this, this application sets up the spring assembly including the first spring board that connects gradually, two at least springs and second spring board to first spring board is connected with the movable block, and the second spring board is connected with the connecting rod, uses the structural strength of first spring board and second spring board enhancement spring assembly, uses a plurality of springs to strengthen spring assembly monolithic connectivity's reliability and elasticity.
Further, the clamping piece comprises a fixed clamping part and a movable clamping part, the fixed clamping part is fixedly connected with the moving piece, and the movable clamping part is close to or far away from the fixed clamping part to clamp or release the retainer. Therefore, the movable clamping part can be matched with the fixed clamping part to firmly clamp the retainers of various types by moving for a certain distance, and the application range is wide.
Furthermore, fixture still includes power spare and guide rail, power spare with remove the clamping part and be connected, the guide rail with the moving member is connected, the guide rail is followed the moving direction setting of removing the clamping part, power spare drive remove the clamping part along the guide rail is close to or is kept away from fixed clamping part. Therefore, the movable clamping part moves along the guide rail, the situation that the movable clamping part cannot be matched with the fixed clamping part to firmly clamp the retainer due to the fact that the moving path of the movable clamping part is inclined is avoided, and the moving reliability and the clamping reliability of the movable clamping part are improved.
Further, the clamp member clamps the holder in an axial direction of the holder. Therefore, the clamping piece clamps the upper end and the lower end of the retainer, the retainer can be effectively prevented from being separated from clamping, and the clamping is stable and firm.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of one embodiment of the present application;
FIG. 2 is a schematic diagram of a portion of the structure of FIG. 1;
FIG. 3 is a schematic structural diagram of one embodiment of the present application;
fig. 4 is a schematic structural view of a part of the structure in fig. 3.
1. A radial movement mechanism; 11. a drive member; 12. a moving member; 121. a moving block; 122. a spring set; 1221. a first spring plate; 1222. a spring; 1223. a second spring plate; 123. a connecting rod;
2. a clamping mechanism; 21. a clamping member; 211. a fixed clamping part; 212. moving the clamping part; 22. a power member; 23. a guide rail;
3. a vibrator;
4. an axial lifting mechanism;
5. a holder.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings, in which the same reference numerals indicate the same or structurally similar but functionally identical elements.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Just as background art, receive the restriction of centre gripping frock at present, the vibration effect of holder is relatively poor, causes unnecessary moulding powder can not in time be got rid of, has increased the work degree of difficulty of follow-up processing, and the vibration structure is unreliable, leads to the centre gripping to become flexible easily, and the vibration process needs the more energy of consumption.
Therefore, the application provides a clamping vibration device of a plastic-impregnated bearing retainer, and fig. 1 is a schematic structural diagram of one embodiment of the application; FIG. 2 is a schematic diagram of a portion of the structure of FIG. 1; FIG. 3 is a schematic structural diagram of one embodiment of the present application; fig. 4 is a schematic structural view of a part of the structure in fig. 3.
Referring to fig. 1 and 2, a clamping vibration device of a plastic-impregnated bearing retainer comprises a radial moving mechanism 1, a clamping mechanism 2, a vibrator 3 and an axial lifting mechanism 4, wherein the radial moving mechanism 1 comprises a driving part 11 and at least three moving parts 12, and the driving part 11 drives the moving parts 12 to move along the radial direction of a retainer 5; the gripping mechanism 2 comprises at least three gripping members 21, the gripping members 21 being connected to the moving member 12 for gripping the holder 5; the vibrator 3 is provided to the gripper 21 or the moving member 12 to vibrate the holder 5; the axial lifting mechanism 4 is arranged above the radial moving mechanism 1 and connected with the radial moving mechanism 1 to drive the retainer 5 to move in the vertical direction.
From the above, when the holder is used for plastic layer molding, the axial lifting mechanism 4 firstly moves the clamping mechanism 2 to the direction in which the clamping member 21 can align with the part to be clamped of the holder 5, then the driving member 11 of the radial moving mechanism 1 drives the moving member 12 to move so as to drive the clamping member 21 to move along the radial direction of the holder 5, when the clamping member 21 moves to the part to be clamped of the holder 5, the clamping member 21 clamps the holder 5, at this time, the axial lifting mechanism 4 moves, the holder 5 is placed into the plastic dipping tank for plastic dipping process, then the axial lifting mechanism 4 moves again, the holder 5 is taken out from the plastic dipping tank, the plastic powder on the surface of the holder 5 close to the metal surface is in a melting and shaping trend, the plastic powder on the outer side is weakened due to the self temperature influence of the holder 5 and can not be completely melted into a plastic layer, in order to avoid influencing the quality of the plastic layer, the plastic powder on the outer side needs to be removed as soon as possible, at this time, the vibrator 3 is started, the retainer 5 is vibrated through the vibration clamping piece 21 or the moving piece 12, and the redundant outer molding powder on the retainer 5 is removed, so that the molding layer of the retainer 5 is uniform, flat and firm, and the integral structural stability and wear resistance of the retainer 5 are ensured.
It should be understood by those skilled in the art that, when the retainer 5 and the rolling element are directly rubbed, if the retainer 5 does not remove the excessive molding powder outside the retainer 5 when the plastic dipping process is completed, the density, the connectivity and the strength of a part of the positions in the plastic layer are not up to the standard, and when the retainer 5 and the rolling element are rubbed, the plastic layer may be easily damaged, and impurities are formed in the gap between the retainer 5 and the rolling element, which affects the stability of the bearing, affects the production quality, and may even cause irrecoverable production loss and safety accidents, so that the excessive molding powder outside the retainer 5 can be removed in time by the present application, the quality of the plastic layer is ensured, and the excessive impurity molding powder generated in the process of the retainer 5 rubbing the rolling element is avoided.
It should be understood by those skilled in the art that the radial moving mechanism 1 can drive the clamping member 21 to move along the radial direction of the holder 5, so as to clamp holders 5 of various types with different radial lengths, and the application range is wide.
Referring to fig. 1 and 2, the clamping member 21 is moved outward by the moving member 12 to clamp the holder 5 in a radial direction of the holder 5, however, it should be understood by those skilled in the art that the moving direction of the clamping member 21 when clamping the holder 5 does not constitute a limitation of the present application, referring to fig. 3 and 4, in some embodiments, the structural arrangement of the clamping member 21 is changed, and the clamping member 21 may also be moved inward by the moving member 12 to clamp the holder 5 in a radial direction of the holder 5.
It should also be understood by those skilled in the art that at least three moving members 12 and three clamping members 21 can be provided, and the moving members 12 and the clamping members 21 correspond to each other one by one, and the clamping members 21 can be uniformly clamped on the holder 5 along the circumferential direction of the holder 5. For example, if there are 3 holding members 21, the angle of interval between each holding member 21 may be set to 120 °; if there are 4 holding members 21, the angle of the interval between each holding member 21 may be set to 90 °.
When the retainer 5 is taken out from the plastic pool, redundant plastic powder possibly exists at each part, in order to remove the redundant plastic powder at each part of the retainer 5 timely and fully, the plastic layer quality is improved, in a specific embodiment, the vibrators 3 are at least arranged in three to be in one-to-one correspondence with the moving pieces 12 and the clamping pieces 21, and therefore vibration can be transmitted to the retainer 5 more fully and uniformly.
The holder 5 is firmly held by the holding members 21, and when vibration occurs at different positions on the holder 5, forces in different directions may be generated on the holder 5 as a whole, so that the holder 5 may be deformed such as bent, twisted, etc., and therefore, in a specific embodiment, the vibrator 3 is set to vibrate synchronously, so that the holder 5 as a whole regularly vibrates, thereby preventing the holder 5 from being damaged during the vibration holding process.
In order to be able to remove the excess outer molding powder from the holder 5 in a timely manner, the vibrator 3 needs to be started quickly; in order to be used by holders 5 of different models, especially large holders 5 used for wind power products, the clamping vibration device is generally large in size and complex in structure, in order to simplify the whole structure and reduce energy consumption, the vibrator 3 needs to have the performance characteristics of small size, easiness in installation, simplicity in maintenance, safety and energy conservation, based on the requirements of the application on the vibrator 3, in a specific embodiment, the pneumatic vibrator 3 is selected as a vibration source, the pneumatic vibrator 3 takes compressed air as a power source, the air consumption is low, safety and energy conservation are realized, the size is small, faults are few, stopping or starting is rapid, the device is suitable for manual or automatic systems, and installation and maintenance are simple and easy.
It will also be appreciated by those skilled in the art that different sizes of the retainers 5 will require different vibration forces, and thus, in particular embodiments, the vibration force, frequency and amplitude can be adaptively adjusted by adjusting the air pressure and flow rate of the pneumatic vibrator 3.
The driving member 11 can drive the moving member 12 to move along the radial direction of the retainer 5, including the driving member 11 linearly driving the moving member 12 to move along the radial direction of the retainer 5, so as to rapidly and accurately drive the clamping member 21 to clamp the retainer 5, and therefore, in a specific embodiment, the driving member 11 can be set as a lead screw driving member 11 or a belt driving member 11 in this application.
It should also be understood by those skilled in the art that the driving manner of the moving member 12 is not limited to the linear driving, but is also limited to the above two driving structures.
When the vibrator 3 vibrates, the moving part 12 and the driving part 11 may be vibrated, the internal structure may be worn, and the clamping, chattering, uncontrollable movement and other unreliable phenomena occur when the clamping part 21 moves, therefore, when the vibrator 3 vibrates, the main structures of the moving part 12 and the driving part 11 should be made as far as possible not to be affected by vibration, so as to avoid affecting the reliability of the radial movement of the clamping part 21 along the retainer 5, therefore, in a specific embodiment, the moving part 12 is arranged to include a moving block, a spring group 122 and a connecting rod 123 which are connected in sequence, the moving block is connected with the driving part 11, the connecting rod 123 is connected with the clamping part 21, and the vibrator 3 is arranged on the connecting rod 123. The connecting rod 123 is a structure directly vibrated by the vibrator 3, and the spring set 122 is arranged between the direct structure (i.e. the moving block) which is driven by the driving part 11 to move and the connecting rod 123, and the vibration of the vibrator 3 is weakened due to the buffering of the spring set 122 when being transmitted to the moving block, so that the connecting block cannot be directly influenced by the vibration of the vibrator 3, thereby reducing the abrasion of the driving part 11 and the moving part 12 and ensuring the moving reliability of the clamping part 21.
As described above, when the vibrator 3 vibrates, the spring assembly 122 directly or indirectly bears the weight of the structure of the holder 21, the vibrator 3, the holder 5, and the like, and thus the structural strength and elasticity of the spring assembly 122 are required to be good, and thus, in a specific embodiment, the present application sets the spring assembly 122 to include the first spring plate 1221, the at least two springs 1222, and the second spring plate 1223 connected in sequence, and the first spring plate 1221 is connected to the moving block, and the second spring plate 1223 is connected to the connecting rod 123, and uses the first spring plate 1221 and the second spring plate 1223 to reinforce the structural strength of the spring assembly 122, and uses the plurality of springs 1222 to reinforce the reliability and elasticity of the overall connection of the spring assembly 122.
It should also be understood by those skilled in the art that a plurality of springs 1222 can be distributed in parallel between the first and second spring plates 1221 and 1223, increasing the connection area with the first and second spring plates 1221 and 1223 to improve the connectivity and ensure the elasticity.
Illustratively, in a specific embodiment, the clamping member 21 includes a fixed clamping portion 211 and a movable clamping portion 212, the fixed clamping portion 211 is fixedly connected to the moving member 12, and the movable clamping portion 212 is close to or away from the fixed clamping portion 211 to clamp or release the holder 5. Therefore, the movable clamping part 212 can be matched with the fixed clamping part 211 to firmly clamp the retainers 5 of various models by moving for a certain distance, and the application range is wide.
Referring to fig. 1 and 2, the fixed grip 211 and the moving grip 212 are outwardly disposed along a radial direction of the holder 5, whereby the grip 21 is moved outwardly by the moving member 12 to grip the holder 5, and it will be understood by those skilled in the art that, referring to fig. 3 and 4, in some embodiments, the fixed grip 211 and the moving grip 212 may also be inwardly disposed along a radial direction of the holder 5, such that the grip 21 can move inwardly the grip holder 5 by the moving member 12.
Illustratively, in a specific embodiment, the clamping mechanism 2 further includes a power member 22 and a guide rail 23, the power member 22 is connected to the movable clamping portion 212, the guide rail 23 is connected to the moving member 12, the guide rail 23 is disposed along a moving direction of the movable clamping portion 212, and the power member 22 drives the movable clamping portion 212 to approach or move away from the fixed clamping portion 211 along the guide rail 23. Thereby, the movable clamping portion 212 moves along the guide rail 23, and the situation that the moving path of the movable clamping portion 212 is deviated so that the movable clamping portion 212 cannot be engaged with the fixed clamping portion 211 to cause the holder 5 to be clamped firmly is avoided, and the moving reliability and the clamping reliability of the movable clamping portion 212 are improved.
Exemplarily, in a specific embodiment, the clamping member 21 clamps the holder 5 in an axial direction of the holder 5. Therefore, the clamping piece 21 clamps the upper end and the lower end of the retainer 5, the retainer 5 can be effectively prevented from being separated from clamping, and the clamping is stable and firm.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above are merely examples of the present invention, and are not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (10)
1. A soak centre gripping vibrating device who moulds bearing retainer characterized in that includes:
the radial moving mechanism comprises a driving part and at least three moving parts, and the driving part drives the moving parts to move along the radial direction of the retainer;
the clamping mechanism comprises at least three clamping pieces, and the clamping pieces are connected with the moving piece and used for clamping the retainer;
a vibrator provided to the clamp or the moving member to vibrate the holder;
and the axial lifting mechanism is arranged above the radial moving mechanism and is connected with the radial moving mechanism so as to drive the retainer to move along the vertical direction.
2. The clamping vibration device for the plastic-impregnated bearing holder as claimed in claim 1, wherein at least three vibrators are provided to correspond to the moving members one by one.
3. The clamping vibration device for the plastic-impregnated bearing retainer as claimed in claim 2, wherein the vibrator vibrates synchronously so that the retainer vibrates regularly as a whole.
4. The clamping vibration device for the plastic impregnated bearing holder as claimed in claim 1, wherein the vibrator is a pneumatic vibrator.
5. The clamping vibration device for the plastic-impregnated bearing holder as claimed in claim 1, wherein the driving member is a lead screw driving member or a belt driving member.
6. The clamping and vibrating device for the plastic-impregnated bearing retainer as claimed in claim 1, wherein the moving member comprises a moving block, a spring set and a connecting rod which are connected in sequence, the moving block is connected with the driving member, the connecting rod is connected with the clamping member, and the vibrator is arranged on the connecting rod.
7. The clamping vibration device for the plastic-impregnated bearing holder as claimed in claim 6, wherein the spring assembly comprises a first spring plate, at least two springs and a second spring plate connected in sequence, the first spring plate is connected with the moving block, and the second spring plate is connected with the connecting rod.
8. A clamping vibration device for a plastic-impregnated bearing holder according to claim 1, wherein said clamping member comprises a fixed clamping portion and a movable clamping portion, said fixed clamping portion is fixedly connected to said moving member, and said movable clamping portion is close to or away from said fixed clamping portion to clamp or unclamp said holder.
9. The clamping vibration device for the plastic-impregnated bearing holder according to claim 8, wherein the clamping mechanism further comprises a power member and a guide rail, the power member is connected with the movable clamping portion, the guide rail is connected with the moving member, the guide rail is arranged along the moving direction of the movable clamping portion, and the power member drives the movable clamping portion to approach or keep away from the fixed clamping portion along the guide rail.
10. The clamping vibration device for a plastic-impregnated bearing holder as claimed in claim 1, wherein said clamping member clamps said holder in an axial direction of said holder.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110911603.7A CN113578696A (en) | 2021-08-10 | 2021-08-10 | Clamping and vibrating device of plastic-impregnated bearing retainer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110911603.7A CN113578696A (en) | 2021-08-10 | 2021-08-10 | Clamping and vibrating device of plastic-impregnated bearing retainer |
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Application publication date: 20211102 |