High-speed micro ball bearing with high sealing and its manufacturing process

Abstract

The application discloses a high-sealing high-speed micro ball bearing and a preparation process thereof. The bearing comprises inner and outer rings, balls and a sealing ring. The sealing ring is provided with a hard sealing ring made of piezoelectric ceramic composite material and is rotationally clamped with a groove. The material is based on multi-physical field coupling, automatically adjusts the clamping gap according to temperature rise and vibration, compensates the sealing error through the piezoelectric effect, and the preparation process utilizes a special assembly machine, realizes eccentric assembly of the inner ring through a position adjusting mechanism, buffers and feeds the balls through a feeding mechanism, drives the inner and outer rings to rotate reversely to test the smoothness through a rotary support mechanism, feeds back through a vibration sensor, links an electric push rod fine adjustment positioning assembly path, realizes accurate support and abnormal pressure release, and effectively solves the problems of insufficient sealing of the traditional bearing, difficult trial assembly and inability to test the smoothness, and significantly improves the bearing performance and research and development efficiency.

Description

Technical Field

[0001] This invention relates to the field of mechanical manufacturing technology, and in particular to high-sealing, high-speed miniature ball bearings and their manufacturing process. Background Technology

[0002] In the field of machinery manufacturing, ball bearings, as a key rotating support component, are widely used in various mechanical equipment, such as automobiles, aerospace equipment, and precision instruments. The performance of ball bearings directly affects the operational stability, accuracy, and service life of the equipment. With the continuous improvement of modern industrial requirements for equipment performance, high speed and high sealing performance have become important directions for the development of ball bearings.

[0003] Traditional high-speed miniature ball bearings have certain shortcomings in sealing performance. During high-speed operation, external dust and impurities can easily enter the bearing, causing friction with the internal rolling elements and raceways. This not only accelerates bearing wear and reduces its service life but may also affect the bearing's rotational accuracy, leading to unstable equipment operation. Simultaneously, internal grease may leak during high-speed operation, affecting lubrication and further exacerbating bearing wear.

[0004] In terms of ball bearing manufacturing process, before mass production of newly developed bearings, it is often necessary to conduct small-batch trial assembly of the newly developed bearings and test the smoothness after assembly. However, most of the current production equipment is a mass assembly line for bearings, which makes it difficult to conduct small-batch trial assembly, which is not conducive to practice in research and development. Furthermore, the existing assembly line production method cannot test the smoothness of the assembled bearings. To address the aforementioned issues, this invention proposes a high-sealing, high-speed miniature ball bearing and its manufacturing process. Summary of the Invention

[0005] This invention provides a high-sealing, high-speed miniature ball bearing and its manufacturing process, which solves the problems of insufficient sealing, difficulty in R&D and trial assembly, and inability to measure smoothness in traditional high-speed miniature ball bearings.

[0006] This invention provides the following technical solution: A high-sealing, high-speed miniature ball bearing includes an outer ring and an inner ring, with the inner ring located inside the outer ring. Multiple balls and a retainer for ball positioning are disposed between the outer and inner rings. The bearing also includes two sealing rings, located above and below the outer ring, respectively. Grooves I are formed at the top and bottom of the outer ring, and grooves II are formed at the top and bottom of the inner ring. Hard sealing rings I and II are fixedly connected to the sealing rings on the sides closest to the outer and inner rings, respectively. Hard sealing rings I and II are inserted into their corresponding grooves I and II and are respectively sealed and rotated against the inner walls of grooves I and II to prevent external dust from entering and internal grease from leaking.

[0007] The hard sealing ring I and hard sealing ring II are made of piezoelectric ceramic composite material.

[0008] A manufacturing process for a high-sealing, high-speed miniature ball bearing, applied in the aforementioned high-sealing, high-speed miniature ball bearing, is used for assembling and testing the bearing outer ring, bearing inner ring, multiple balls, and cage during the research and development process. The process includes the following steps: S1. Place the machined bearing outer ring and bearing inner ring into the bearing assembly machine and position them; S2. Move the inner ring of the bearing to a position eccentric to the outer ring of the bearing, and then place the balls between the outer ring and the inner ring of the bearing. S3. Move the inner ring of the bearing in the reverse direction to reset it, so that the center line of the inner ring of the bearing coincides with the center line of the outer ring of the bearing. Then install the cage to limit the multiple balls. S4. Drive the outer ring and inner ring of the bearing to rotate simultaneously, and make the rotation directions of the outer ring and inner ring of the bearing opposite, in order to test the smoothness of the fit between the outer ring and inner ring of the bearing and the balls. S5. After the smoothness test is completed, the assembled bearing is taken out, and then the two sealing rings are fitted into the outer ring and inner ring of the bearing respectively using a press.

[0009] In one possible design, the bearing assembly machine includes an equipment base, a rotating support mechanism mounted on the top of the equipment base, and both the outer and inner rings of the bearings are mounted on the rotating support mechanism. The rotating support mechanism includes a rotating ring I fixedly connected to the top of the equipment base, a rotating ring II rotatably connected to the top of the rotating ring I, a support bracket fixedly connected to the top of the rotating ring II, the outer ring of the bearing placed on the support bracket, and an annular elastic soft pad fixedly connected to the bottom inner wall of the support bracket to buffer and dampen the balls when they are fed. A support disk located within the annular elastic soft pad is also rotatably connected to the bottom inner wall of the support bracket, and the inner ring of the bearing is placed on the support disk. The rotating support mechanism also includes a drive assembly, the bottom of which is connected to the top of the equipment base, and the top extends into the support bracket and is connected to the center of the bottom of the support plate, so as to drive the outer ring and inner ring of the bearing to rotate in opposite directions for a smoothness test after assembly.

[0010] In one possible design, the drive assembly includes a bevel gear ring fixedly connected to the bottom of the support bracket, a drive motor fixedly connected to the top of the equipment base, and a bevel gear fixedly connected to the output shaft of the drive motor, the bevel gear meshing with the bevel gear ring; the drive assembly also includes a transmission component, the bottom of which is connected to the top of the equipment base, and the top of which extends into the support bracket and connects to the center of the bottom of the support plate; wherein, the drive motor drives the support bracket to rotate through the bevel gear and the bevel gear ring to drive the outer ring of the bearing to rotate, while the transmission component drives the support plate to rotate in the opposite direction to drive the inner ring of the bearing to rotate.

[0011] In one possible design, the transmission component includes a drive toothed ring fixedly connected to the bottom of the support bracket. A rotating shaft II is rotatably connected to the top of the equipment base. The top end of the rotating shaft II extends into the range of the drive toothed ring and is fixedly connected to a transmission gear. The drive toothed ring meshes with the transmission gear. A rotating shaft I is fixedly connected at the bottom center of the support plate. The bottom end of the rotating shaft I extends to the bottom of the support bracket. Synchronous pulleys are fixedly fitted on both rotating shaft I and rotating shaft II. The same synchronous belt is fitted on the two synchronous pulleys. When the support bracket rotates, the drive toothed ring drives the transmission gear to rotate, causing the rotating shaft II to rotate in the opposite direction to the support bracket. The synchronous pulleys and the synchronous belt drive the rotating shaft I to rotate synchronously, thereby driving the inner ring of the bearing to rotate synchronously in opposite directions with the outer ring of the bearing for testing.

[0012] In one possible design, the bearing assembly machine further includes an adjustment mechanism. The adjustment mechanism includes a portal-shaped support frame fixedly connected to the top of the equipment base. A linear moving plate is slidably connected within the portal-shaped support frame. A sliding hole is provided on the linear moving plate, through which a support plate is slidably connected. An installation tube is slidably connected through the support plate. A stepper motor I is fixedly connected to the top of the linear moving plate. A transmission screw is fixedly connected to the output shaft of the stepper motor I. One end of the transmission screw is rotatably connected to the top of the linear moving plate. A threaded connecting tube is threaded onto the transmission screw. The top end of the mounting tube is rotatably connected; a positioning assembly located below the linear moving plate is connected to the mounting tube, and the positioning assembly is used to position and support the bearing inner ring; two electric linear actuators are symmetrically fixedly connected to the top of the portal frame, and the output shaft of the electric linear actuator extends into the portal frame and is fixedly connected to the top side of the linear moving plate; the electric linear actuator is activated to drive the linear moving plate to move downward to drive the positioning assembly to expand and position the bearing inner ring, and the stepper motor I is activated to drive the transmission screw to rotate to drive the mounting tube to move laterally through the threaded connecting tube, so that the bearing inner ring is eccentric or reset.

[0013] In one possible design, the positioning assembly includes a support frame fixedly mounted on the mounting tube, located below the support plate. Multiple connecting plates are slidably connected laterally at equal intervals within the support frame. A transmission rod is slidably connected longitudinally through each connecting plate, and a locking plate is fixedly connected to the bottom end of the transmission rod, contacting the top of the support plate. A connecting frame is also fixedly mounted on the mounting tube between the support frame and the support plate. Rotating rods are rotatably connected to the connecting frame at equal intervals, with one end of each rotating rod rotatably connected to the top end of a corresponding transmission rod. A tension spring is fitted onto the transmission rod above the connecting plate, with its top and bottom ends fixedly connected to the top end of the transmission rod and the top end of the connecting plate, respectively. When the mounting tube moves downwards, the transmission rod drives the rotating rod to rotate horizontally, causing the locking plate to expand and engage the inner ring of the bearing. When the tension spring returns to its original position, it pulls the transmission rod to retract.

[0014] In one possible design, the bearing assembly machine further includes a feeding mechanism, which comprises a material feeding box fixedly connected to the top of one side of a portal frame. A material discharge pipe is fixedly connected to the bottom inner wall of the material feeding box, and the bottom end of the material discharge pipe extends into the portal frame and corresponds to the gap between the outer and inner rings of the bearing. A material feed pipe is fixedly connected through the top inner wall of the material feeding box. A stepper motor II is fixedly connected to the center of one side of the material feeding box. The output shaft of the stepper motor II extends into the material feeding box and is fixedly connected to a material transfer plate. Multiple material placement slots are evenly spaced on the material transfer plate, which are used to support the balls. The stepper motor II is started to drive the material transfer plate to rotate and transport the balls to the material discharge pipe position, where they are placed onto an annular elastic cushion for cushioning.

[0015] In one possible design, a support ring is fixedly mounted on the support bracket. Multiple support boxes are fixedly connected at equal intervals to the inner wall of one side of the support ring. A movable rod is slidably connected inside the support box. One end of the movable rod extends into the support ring and is fixedly connected to a clamping plate. The multiple clamping plates are used to clamp the outer ring of the bearing. An electromagnet I is fixedly connected to the inner wall of one side of the support box, and an electromagnet II is fixedly connected to the other end of the movable rod. The sides of electromagnet I and electromagnet II that are close to each other are set with the same pole. When electromagnet I and electromagnet II are energized, a repulsive magnetic force is generated, which pushes the movable rod to move the clamping plates to clamp the outer ring of the bearing, improving stability. A vibration sensor is also included, which is connected to the drive motor.

[0016] In this invention, during use, the machined bearing outer ring is first placed on the support bracket of the bearing assembly machine. Electromagnets I and II are energized to generate mutually repelling magnetic forces, pushing the moving rod to clamp the bearing outer ring with a clamping plate, thus improving connection stability. Next, two electric linear actuators are activated to move the linear moving plate downwards, causing the positioning component's locking plate to move into the bearing inner ring and contact the support plate. As the linear moving plate continues to move downwards, the transmission rod can no longer move, driving the rotating rod to rotate horizontally, moving the transmission rod away from the mounting tube, thus positioning the locking plate against the bearing inner ring. The bearing inner ring is positioned and supported; then, stepper motor I is started to drive the transmission screw to rotate, which in turn drives the mounting tube to move laterally under the action of the threaded transmission, moving the bearing inner ring to a position eccentric to the bearing outer ring; then, the balls are sequentially placed into the material placement slot of the material transfer tray in the material feeding box, and stepper motor II is started to drive the material transfer tray to rotate, conveying the balls to the position corresponding to the material discharge pipe, so that they are conveyed through the material discharge pipe to the annular elastic soft pad between the bearing outer ring and the bearing inner ring. The annular elastic soft pad provides buffer support for the balls, reducing the rebound height; after the balls are placed, the stepper motor is started. Motor I drives the transmission screw to rotate in the opposite direction, resetting the inner ring of the bearing in the reverse direction. This allows multiple balls to assemble with the outer and inner rings of the bearing, and a cage is installed to limit the movement of the balls. Subsequently, the drive motor is started, driving the bevel gear to rotate. Under the meshing transmission action with the bevel gear ring, this drives the support bracket to rotate, which in turn drives the outer ring of the bearing to rotate. Simultaneously, the rotation of the support bracket drives the drive gear ring to rotate, which, under the meshing transmission action with the transmission gear, drives the rotating shaft II to rotate. The rotating shaft II rotates in the opposite direction to the support bracket. The rotation of the rotating shaft II, through the transmission of two synchronous pulleys and a synchronous belt, drives the rotating shaft II to rotate. The rotating shaft I rotates synchronously and in the same direction, which in turn drives the inner ring of the bearing on the support plate to rotate, so that the inner ring and the outer ring of the bearing rotate synchronously but in opposite directions. This is used to test the smoothness of the fit between the outer ring and the inner ring of the bearing and the balls. After the test is completed, the assembled bearing is taken out, and a press is used to clamp the two sealing rings onto the outer ring and the inner ring of the bearing, respectively. The hard sealing ring I and hard sealing ring II on the sealing ring are inserted into the corresponding grooves I and II, respectively, and are clamped and sealed with the inner wall of groove I and the inner wall of groove II, respectively, thus completing the assembly of the high-sealing high-speed miniature ball bearing.

[0017] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the invention.

[0018] Beneficial effects: In this invention, through the set rotating support mechanism, after the bearing outer ring, bearing inner ring, multiple balls and cage are assembled, the drive component can be activated to drive the bearing outer ring and bearing inner ring to rotate respectively, and the rotation directions of the bearing outer ring and bearing inner ring are opposite. Thus, after the balls are assembled between the bearing outer ring and bearing inner ring, the smoothness between the multiple balls and the bearing outer ring and bearing inner ring can be tested. In this invention, the adjusting mechanism allows two electric linear push rods to move a linear moving plate downwards, moving the positioning component into the bearing inner ring. As the linear moving plate moves downwards, it drives the positioning component to expand, thus providing positioning support for the bearing inner ring. Then, stepper motor I rotates the transmission screw, which, through threaded transmission with the threaded connecting pipe, moves the mounting pipe laterally, allowing the bearing inner ring to move within the bearing outer ring. After the balls are inserted, stepper motor I reverses the transmission screw, resetting the bearing inner ring. This allows multiple balls to be assembled with both the bearing outer and inner rings. In this invention, the ball bearings to be assembled can be sequentially placed into the material placement trough by the set feeding mechanism. Then, the stepper motor II is started to drive the material transfer disk to rotate, which can transport the ball bearings to the position corresponding to the material discharge pipe. After that, the ball bearings can be transported to the annular elastic pad between the outer ring and the inner ring of the bearing through the material discharge pipe. The annular elastic pad can buffer and support the ball bearings, which can effectively prevent the ball bearings from rebounding too much.

[0019] This invention further employs piezoelectric ceramic composite materials to manufacture hard sealing rings, achieving adaptive control of the bearing under high-speed extreme conditions. This mechanism utilizes the piezoelectric effect (ΔD=d*V*T) to respond in real time to the thermal expansion (ΔT) and mechanical vibration (F) generated during operation. By converting the induced voltage into precise micro-displacement, it automatically and dynamically adjusts the clamping gap of the sealing ring, thereby obtaining an extremely high-precision compensated gap (S′) based on compensating for the original error (S). This effectively solves the problem that traditional passive seals cannot simultaneously achieve both tightness and smooth operation. At the same time, combined with the vibration sensor integrated into the motor output, the system forms a closed-loop control of "monitoring-feedback-execution". It can finely adjust the support path of the linear moving plate and positioning components based on real-time vibration data and the linkage of the electric linear actuator. This not only ensures the centering accuracy during assembly and testing, but also automatically releases pressure using the piezoelectric expansion characteristics of the material when the monitored value exceeds the safety threshold. This overcomes the technical bottlenecks of sealing failure or component seizure caused by high-frequency vibration and thermal stress, significantly improving the sealing reliability and service life of the miniature ball bearing.

[0020] This invention solves the problems of insufficient sealing, difficulty in R&D and trial assembly, and inability to measure smoothness in traditional high-speed miniature ball bearings. It achieves precise positioning and assembly through a new structural design, uses an annular elastic soft pad to buffer the rolling elements, and enables the inner and outer rings of the bearing to rotate synchronously in opposite directions to test smoothness. Finally, a sealing ring is installed, which improves bearing performance and R&D efficiency. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the high-sealing, high-speed miniature ball bearing provided in an embodiment of the present invention; Figure 2 This is a three-dimensional exploded structural diagram of the high-sealing, high-speed miniature ball bearing provided in an embodiment of the present invention; Figure 3 This is a first-view three-dimensional structural schematic diagram of the bearing assembly machine provided in an embodiment of the present invention; Figure 4 This is a two-dimensional structural schematic diagram of the bearing assembly machine provided in an embodiment of the present invention from a second perspective. Figure 5 This is a schematic diagram of the front view sectional structure of the bearing assembly machine provided in an embodiment of the present invention; Figure 6 A three-dimensional schematic diagram of the connection structure between the equipment base and the support bracket of the bearing assembly machine provided in an embodiment of the present invention; Figure 7 The image shows a three-dimensional bottom view of the drive motor, bevel gear, bevel ring, support bracket, and rotating shaft I connection structure of the bearing assembly machine provided in this embodiment of the invention. Figure 8 This is a side sectional view of the connection structure of the drive motor, support bracket, and support plate of the bearing assembly machine provided in an embodiment of the present invention. Figure 9 This is a three-dimensional schematic diagram of the stepper motor I, mounting tube, support frame, and multiple transmission rod connection structure of the bearing assembly machine provided in an embodiment of the present invention.

[0022] Figure label: 1. Bearing outer ring; 2. Bearing inner ring; 3. Groove I; 4. Groove II; 5. Ball bearing; 6. Sealing ring; 7. Hard sealing ring I; 8. Hard sealing ring II; 9. Equipment base; 10. Rotating ring I; 11. Rotating ring II; 12. Support bracket; 13. Annular elastic pad; 14. Support plate; 15. Rotating shaft I; 16. Rotating shaft II; 17. Synchronous pulley; 18. Synchronous belt; 19. Drive toothed ring; 20. Transmission gear; 21. Drive motor; 22. Bevel gear; 23. Bevel ring; 24. Support ring; 25. Support housing; 26. Moving part 27. Clamping plate; 28. Electromagnet I; 29. ​​Electromagnet II; 30. Portal support frame; 31. Linear moving plate; 32. Stepper motor I; 33. Transmission screw; 34. Support plate; 35. Mounting pipe; 36. Threaded connecting pipe; 37. Support frame; 38. Connecting plate; 39. Transmission rod; 40. Positioning plate; 41. Connecting frame; 42. Rotating rod; 43. Tension spring; 44. Electric linear actuator; 45. Material feeding box; 46. Material discharge pipe; 47. Material inlet pipe; 48. Stepper motor II; 49. Material transfer tray; 50. Material placement trough. Detailed Implementation

[0023] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0024] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the devices are connected to each other and their relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of the present invention, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0025] In one embodiment: Refer to Figure 1-9A high-sealing, high-speed miniature ball bearing includes an outer ring 1 and an inner ring 2, with the inner ring 2 located inside the outer ring 1. Multiple balls 5 and a cage for positioning the balls 5 are arranged between the outer ring 1 and the inner ring 2. Two sealing rings 6 are also provided, positioned above and below the outer ring 1, respectively. Grooves I3 are formed at the top and bottom of the outer ring 1, and grooves II4 are formed at the top and bottom of the inner ring 2. Hard sealing rings I7 and II8 are fixedly installed on the sealing rings 6 near the outer ring 1 and inner ring 2, respectively. The hard sealing rings I7 and II8 are inserted into the corresponding grooves I3 and II4, respectively, and are rotatably and sealingly engaged with the inner walls of grooves I3 and II4.

[0026] The manufacturing process of this high-sealing, high-speed miniature ball bearing is applied in the research, assembly, and testing of the aforementioned high-sealing, high-speed miniature ball bearing. The process involves operations on the outer ring 1, inner ring 2, multiple balls 5, and cage. The specific steps are as follows: The machined outer bearing ring 1 and inner bearing ring 2 are placed on the equipment base 9 of the bearing assembly machine. A rotating support mechanism is installed on the top of the equipment base 9, and both the outer bearing ring 1 and inner bearing ring 2 are mounted on the rotating support mechanism. The rotating support mechanism includes a rotating ring I 10 fixedly installed on the top of the equipment base 9, a rotating ring II 11 rotatably connected to the top of the rotating ring I 10, and a support bracket 12 fixedly installed on the top of the rotating ring II 11. The outer bearing ring 1 is placed on the support bracket 12. An annular elastic pad 13 is fixedly installed on the inner wall of the bottom of the support bracket 12. A support disk 14 located within the annular elastic pad 13 is also rotatably connected to the inner wall of the bottom of the support bracket 12, and the inner bearing ring 2 is placed on the support disk 14. A drive assembly is connected to the bottom of the support bracket 12. The bottom of the drive assembly is connected to the top of the equipment base 9, and the top extends into the support bracket 12 and connects to the center of the bottom of the support disk 14. The drive assembly includes a bevel ring 23 fixedly mounted on the bottom of the support bracket 12, a drive motor 21 fixedly mounted on the top of the equipment base 9, and a bevel bevel gear 22 fixedly mounted on the output shaft of the drive motor 21, the bevel bevel gear 22 meshing with the bevel ring 23. A transmission component is also connected to the bottom of the support bracket 12, with its bottom connected to the top of the equipment base 9 and its top extending into the support bracket 12 and connecting to the center of the bottom of the support plate 14. The transmission component includes a drive toothed ring 19 fixedly mounted on the bottom of the support bracket 12, and a rotating shaft II 16 rotatably connected to the top of the equipment base 9. The top end of the rotating shaft II 16 extends into the range of the drive toothed ring 19 and is fixedly mounted with a transmission gear 20, the drive toothed ring 19 meshing with the transmission gear 20. A rotating shaft I 15 is fixedly installed at the center of the bottom of the support plate 14. The bottom end of the rotating shaft I 15 extends to the bottom of the support bracket 12. Synchronous pulleys 17 are fixedly sleeved on both the rotating shaft I 15 and the rotating shaft II 16. The same synchronous belt 18 is driven onto the two synchronous pulleys 17. The outer ring 1 and the inner ring 2 of the bearing are positioned by the rotating support mechanism.

[0027] like Figure 7-8As shown, a support ring 24 is fixedly mounted on the support bracket 12. Multiple support boxes 25 are fixedly installed at equal intervals on the inner wall of one side of the support ring 24. A moving rod 26 is slidably connected inside the support box 25. One end of the moving rod 26 extends into the support ring 24 and is fixedly mounted with a clamping plate 27. The multiple clamping plates 27 are used to clamp the outer ring 1 of the bearing. An electromagnet I 28 is fixedly installed on the inner wall of one side of the support box 25, and an electromagnet II 29 is fixedly installed on the other end of the moving rod 26. Electromagnets I 28 and II 29 are arranged with the same pole on the side closest to each other. After the outer ring 1 of the bearing is placed on the support bracket 12, the multiple electromagnets I 28 and II 29 are energized. The energized electromagnets I 28 and II 29 generate magnetic repulsion, pushing the moving rod 26 outwards and causing the clamping plates 27 to move. The clamping plates 27 are used to clamp and position the outer ring 1 of the bearing, improving the connection stability between the outer ring 1 of the bearing and the support bracket 12.

[0028] This application can be used in the field of mechanical manufacturing technology, or in other fields applicable to this application.

[0029] In another embodiment: Reference Figure 3-9Based on the above embodiments, an improvement is made: a bearing assembly machine, applied in the field of mechanical manufacturing technology, further includes an adjustment mechanism installed on the top of the equipment base 9. The adjustment mechanism includes a portal-shaped support frame 30 fixedly installed on the top of the equipment base 9, a linear moving plate 31 slidably connected inside the portal-shaped support frame 30, a sliding hole on the linear moving plate 31, a slidingly connected support plate 34 passing through the sliding hole, and a slidingly connected mounting tube 35 passing through the support plate 34. A stepper motor I 32 is fixedly installed on the top of the linear moving plate 31, a transmission screw 33 is fixedly installed on the output shaft of the stepper motor I 32, one end of the transmission screw 33 is rotatably connected to the top of the linear moving plate 31, and a threaded connecting tube 36 is threaded onto the transmission screw 33, the threaded connecting tube 36 being rotatably connected to the top end of the mounting tube 35. A positioning assembly located below the linear moving plate 31 is connected to the mounting tube 35. The positioning assembly includes a support frame 37 fixedly mounted on the mounting tube 35. The support frame 37 is located below the support plate 34. Multiple connecting plates 38 are slidably connected at equal intervals within the support frame 37. A transmission rod 39 is slidably connected longitudinally through the connecting plate 38. A positioning plate 40 is fixedly mounted at the bottom of the transmission rod 39. The positioning plate 40 contacts the top of the support plate 14 and the inner wall of the bearing inner ring 2. A connecting frame 41 located between the support frame 37 and the support plate 34 is also fixedly mounted on the mounting tube 35. Rotating rods 42 are rotatably connected at equal intervals on the connecting frame 41. One end of the rotating rod 42 is rotatably connected to the top of the corresponding transmission rod 39. A tension spring 43 is sleeved on the transmission rod 39 above the connecting plate 38. The top and bottom ends of the tension spring 43 are fixedly connected to the top of the transmission rod 39 and the top of the connecting plate 38 respectively through hooks. Two electric linear actuators 44 are symmetrically fixedly installed on the top of the portal support frame 30. The output shafts of the electric linear actuators 44 extend into the portal support frame 30 and are fixedly connected to one side of the top of the linear moving plate 31. By activating the two electric linear actuators 44, the linear moving plate 31 is moved downward, moving the positioning component into the range of the bearing inner ring 2. When the linear moving plate 31 moves downward, it drives the positioning component to expand, using the positioning component to position and support the bearing inner ring 2.

[0030] The bearing inner ring 2 is moved to a position eccentric to the bearing outer ring 1. Specifically, the stepper motor I 32 is started to drive the transmission screw 33 to rotate, which in turn drives the mounting tube 35 to move laterally under the action of threaded transmission, thereby driving the bearing inner ring 2 to move within the range of the bearing outer ring 1, so that the bearing inner ring 2 is moved to a position eccentric to the bearing outer ring 1.

[0031] like Figure 5As shown, the ball bearing 5 is placed between the outer ring 1 and the inner ring 2 of the bearing. The bearing assembly machine also includes a feeding mechanism installed on one side of the adjustment mechanism. The feeding mechanism includes a material feeding box 45 fixedly installed on the top of one side of the portal support frame 30. A material discharge pipe 46 is fixedly installed on the bottom inner wall of the material feeding box 45. The bottom end of the material discharge pipe 46 extends into the portal support frame 30 and corresponds to the gap position between the outer ring 1 and the inner ring 2 of the bearing. A material feed pipe 47 is fixedly installed through the top inner wall of the material feeding box 45. A stepper motor II 48 is fixedly installed at the center of one side of the material feeding box 45. The output shaft of the stepper motor II 48 extends into the material feeding box 45 and a material transfer plate 49 is fixedly installed. Multiple material placement slots 50 are equally spaced on the material transfer plate 49. The material placement slots 50 are used to support the ball bearing 5. The balls 5 to be assembled are sequentially placed into the material placement trough 50. The stepper motor II 48 is started to drive the material transfer plate 49 to rotate, and the balls 5 are transported to the position corresponding to the material discharge pipe 46. The balls 5 are transported through the material discharge pipe 46 to the annular elastic pad 13 between the outer ring 1 and the inner ring 2 of the bearing. The annular elastic pad 13 provides buffer support for the balls 5 to prevent the balls 5 from rebounding too high.

[0032] The inner ring 2 of the bearing is moved in the reverse direction to reset it, so that the axis of the inner ring 2 coincides with the axis of the outer ring 1. By starting the stepper motor I 32, the transmission screw 33 is driven to move in the reverse direction, which drives the mounting tube 35 to move laterally in the reverse direction, resetting the inner ring 2 of the bearing in the reverse direction, so that the multiple balls 5 can be assembled with the outer ring 1 and the inner ring 2 of the bearing. Then, the cage is installed to limit the multiple balls 5.

[0033] The outer ring 1 and inner ring 2 of the drive bearing rotate simultaneously in opposite directions to test the smoothness of the fit between the outer ring 1 and inner ring 2 and the balls 5. The drive motor 21 is started, driving the bevel gear 22 to rotate. Under the meshing transmission action with the bevel gear ring 23, the support bracket 12 rotates, driving the outer ring 1 of the bearing to rotate. When the support bracket 12 rotates, it drives the transmission component to move, driving the toothed ring 19 to rotate with the support bracket 12. Under the meshing transmission action with the transmission gear 20, it drives the rotating shaft II 16 to rotate. The rotation direction of the rotating shaft II 16 is opposite to that of the support bracket 12. When the rotating shaft II 16 rotates, it drives the rotating shaft I 15 to rotate synchronously and in the same direction through the transmission of two synchronous pulleys 17 and synchronous belt 18, driving the support disc 14 to rotate, driving the inner ring 2 of the bearing to rotate, so that the inner ring 2 of the bearing rotates synchronously with the outer ring 1 in opposite directions. This is used to test the smoothness of the fit between the outer ring 1 and inner ring 2 and the balls 5.

[0034] After testing the smoothness of the fit between the bearing outer ring 1 and the bearing inner ring 2 and the ball 5, the assembled bearing is removed, and then a press is used to clamp the two sealing rings 6 onto the bearing outer ring 1 and the bearing inner ring 2 respectively.

[0035] Hard sealing rings I7 and II8 are made of piezoelectric ceramic composite material (d is the piezoelectric coefficient, T is the thickness, and η is the force feedback coefficient). They are linked with groove I3, groove II4, the rotating support mechanism, and the drive assembly. When high-speed operation generates vibration F or heat causes a temperature rise ΔT, the composite response displacement ΔD = d * V * T (V is the induced voltage) automatically adjusts the clamping gap of the sealing ring 6 to compensate for dust ingress or lubrication leakage. The compensation gap error S' = S - (d * V * T + η * F), where S' is the compensation error, S is the original error, and F is the value measured by the vibration sensor. The vibration sensor is integrated into the output of the drive motor 21 and electrically connected to the electric linear actuator 44 and the stepper motor I32. It monitors vibration in real time and provides feedback. The electric linear actuator 44 finely adjusts the linear moving plate 31 according to the signal, so that the positioning assembly accurately supports the bearing inner ring 2 along the compensation path. When ΔT or F exceeds the threshold, the piezoelectric material automatically expands to release the pressure. This reconstruction is applicable to the general production of precision rotating parts made of various materials, overcoming the leakage and reliability problems caused by vibration and heat in traditional sealing equipment.

[0036] As is known to those skilled in the art, the working principles and circuit connection methods of the drive motor 21, electromagnet I 28, electromagnet II 29, stepper motor I 32, electric linear actuator 44, and stepper motor II 48 are all conventional technical methods. Given that the selection, configuration, and specific implementation of the above components fall within the scope of conventional technology in this field, this specification will not elaborate on their implementation details. Relevant personnel can make reasonable selections based on actual technical needs or system adaptation requirements.

[0037] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0038] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. In the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A high-sealing, high-speed miniature ball bearing, comprising an outer ring (1) and an inner ring (2), the inner ring (2) being located inside the outer ring (1), and a plurality of balls (5) and a cage for limiting the balls (5) being disposed between the outer ring (1) and the inner ring (2), characterized in that, It also includes two sealing rings (6), located above and below the outer ring (1) of the bearing, respectively. Grooves I (3) are provided at the top and bottom of the outer ring (1), and grooves II (4) are provided at the top and bottom of the inner ring (2). Hard sealing rings I (7) and II (8) are fixedly connected to the side of the sealing ring (6) near the outer ring (1) and the inner ring (2) of the bearing, respectively. Hard sealing rings I (7) and II (8) are inserted into the corresponding grooves I (3) and II (4) and are respectively sealed and rotated with the inner wall of groove I (3) and the inner wall of groove II (4) to prevent external dust from entering and internal grease from leaking.

2. The high-sealing, high-speed miniature ball bearing according to claim 1, characterized in that, The hard sealing ring I (7) and hard sealing ring II (8) are made of piezoelectric ceramic composite material.

3. A manufacturing process for a high-sealing, high-speed miniature ball bearing, applied in the high-sealing, high-speed miniature ball bearing as described in claim 2, used for assembling and testing the bearing outer ring (1), bearing inner ring (2), multiple balls (5), and cage during the research and development process, characterized in that... Includes the following steps: S1. Place the machined bearing outer ring (1) and bearing inner ring (2) into the bearing assembly machine and position them. S2. Move the inner ring (2) of the bearing to a position eccentric to the outer ring (1) of the bearing, and then place the ball (5) between the outer ring (1) and the inner ring (2). S3. Move the inner ring (2) of the bearing in the opposite direction to reset it so that the center line of the inner ring (2) of the bearing coincides with the center line of the outer ring (1) of the bearing. Then install the cage to limit the multiple balls (5). S4. Drive the outer ring (1) and inner ring (2) of the bearing to rotate simultaneously, and make the outer ring (1) and inner ring (2) rotate in opposite directions to test the smoothness of the fit between the outer ring (1) and inner ring (2) and the ball (5). S5. After the smoothness test is completed, the assembled bearing is taken out, and then the two sealing rings (6) are fitted into the bearing outer ring (1) and the bearing inner ring (2) respectively using a press.

4. The manufacturing process of the high-sealing, high-speed miniature ball bearing according to claim 3, characterized in that, The bearing assembly machine includes an equipment base (9), and a rotating support mechanism is installed on the top of the equipment base (9). The outer ring (1) and inner ring (2) of the bearing are both set on the rotating support mechanism. The rotating support mechanism includes a rotating ring I (10) fixedly connected to the top of the equipment base (9). A rotating ring II (11) is rotatably connected to the top of the rotating ring I (10). A support bracket (12) is fixedly connected to the top of the rotating ring II (11). The outer ring (1) of the bearing is placed on the support bracket (12). An annular elastic soft pad (13) is fixedly connected to the bottom inner wall of the support bracket (12) to buffer and dampen the ball (5) when it is released. A support plate (14) located in the annular elastic soft pad (13) is also rotatably connected to the bottom inner wall of the support bracket (12). The inner ring (2) of the bearing is placed on the support plate (14). The rotating support mechanism also includes a drive assembly whose bottom is connected to the top of the equipment base (9), and whose top extends into the support bracket (12) and is connected to the bottom center of the support plate (14) to drive the outer ring (1) and inner ring (2) of the bearing to rotate in opposite directions after assembly for a smoothness test.

5. The manufacturing process of the high-sealing, high-speed miniature ball bearing according to claim 4, characterized in that, The drive assembly includes a bevel ring (23) fixedly connected to the bottom of the support bracket (12), a drive motor (21) fixedly connected to the top of the equipment base (9), a bevel gear (22) fixedly connected to the output shaft of the drive motor (21), and the bevel gear (22) meshing with the bevel ring (23); the drive assembly also includes a transmission component, the bottom of which is connected to the top of the equipment base (9), and the top extends into the support bracket (12) and is connected to the bottom center of the support plate (14); wherein, the drive motor (21) drives the support bracket (12) to rotate through the bevel gear (22) and the bevel ring (23) to drive the outer ring (1) of the bearing to rotate, while the transmission component drives the support plate (14) to rotate in the opposite direction to drive the inner ring (2) of the bearing to rotate.

6. The manufacturing process of the high-sealing, high-speed miniature ball bearing according to claim 5, characterized in that, The transmission component includes a drive toothed ring (19) fixedly connected to the bottom of the support bracket (12), a rotating shaft II (16) rotatably connected to the top of the equipment base (9), the top end of the rotating shaft II (16) extending into the range of the drive toothed ring (19) and fixedly connected to a transmission gear (20), the drive toothed ring (19) meshing with the transmission gear (20), and a rotating shaft I (15) fixedly connected at the bottom center of the support plate (14), the bottom end of the rotating shaft I (15) extending to the bottom of the support bracket (12). Both rotating shaft I (15) and rotating shaft II (16) are fixedly fitted with synchronous pulleys (17), and the same synchronous belt (18) is fitted on the two synchronous pulleys (17). When the support bracket (12) rotates, the drive toothed ring (19) drives the transmission gear (20) to rotate, so that rotating shaft II (16) rotates in the opposite direction to the support bracket (12). Through the synchronous pulleys (17) and the synchronous belt (18), rotating shaft I (15) rotates synchronously, so as to drive the inner ring (2) of the bearing and the outer ring (1) of the bearing to rotate synchronously in opposite directions for testing.

7. The manufacturing process of the high-sealing, high-speed miniature ball bearing according to any one of claims 4 to 5, characterized in that, The bearing assembly machine also includes an adjustment mechanism, which includes a portal frame (30) fixedly connected to the top of the equipment base (9). A linear moving plate (31) is slidably connected inside the portal frame (30). A sliding hole is provided on the linear moving plate (31), and a support plate (34) is slidably connected through the sliding hole. An installation tube (35) is slidably connected through the support plate (34). A stepper motor I (32) is fixedly connected to the top of the linear moving plate (31). A transmission screw (33) is fixedly connected to the output shaft of the stepper motor I (32). One end of the transmission screw (33) is rotatably connected to the top of the linear moving plate (31). A threaded connecting tube (36) is threaded onto the transmission screw (33). The threaded connecting tube (36) and the installation tube are connected to the installation tube. The top of (35) is rotatably connected; a positioning component located below the linear moving plate (31) is connected to the mounting tube (35), the positioning component is used to position and support the bearing inner ring (2); two electric linear push rods (44) are symmetrically fixedly connected to the top of the portal support frame (30), the output shaft of the electric linear push rod (44) extends into the portal support frame (30) and is fixedly connected to the top side of the linear moving plate (31); the electric linear push rod (44) is started to drive the linear moving plate (31) to move downward to drive the positioning component to expand and position the bearing inner ring (2), the stepper motor I (32) is started to drive the transmission screw (33) to rotate to drive the mounting tube (35) to move laterally through the threaded connecting tube (36), so that the bearing inner ring (2) is eccentric or reset.

8. The manufacturing process of the high-sealing, high-speed miniature ball bearing according to claim 7, characterized in that, The positioning assembly includes a support frame (37) fixedly mounted on the mounting tube (35), the support frame (37) being located below the support plate (34), and multiple connecting plates (38) being slidably connected laterally at equal intervals within the support frame (37). A transmission rod (39) is slidably connected longitudinally through the connecting plate (38), and a positioning plate (40) is fixedly connected to the bottom end of the transmission rod (39), the positioning plate (40) contacting the top of the support plate (14). A connecting frame (41) located between the support frame (37) and the support plate (34) is also fixedly mounted on the mounting tube (35), and the connecting frame (41) has... Rotating rods (42) are rotatably connected at equal intervals. One end of the rotating rod (42) is rotatably connected to the top end of the corresponding transmission rod (39). A tension spring (43) is sleeved on the transmission rod (39) above the connecting plate (38). The top and bottom ends of the tension spring (43) are fixedly connected to the top end of the transmission rod (39) and the top end of the connecting plate (38), respectively. When the mounting tube (35) moves downward, the transmission rod (39) drives the rotating rod (42) to rotate horizontally to drive the locking plate (40) to expand and lock the inner ring (2) of the bearing. When the tension spring (43) is reset, it pulls the transmission rod (39) to retract.

9. The manufacturing process of the high-sealing, high-speed miniature ball bearing according to claim 7, characterized in that, The bearing assembly machine also includes a feeding mechanism, which includes a material feeding box (45) fixedly connected to the top of one side of the portal frame (30). A material discharge pipe (46) is fixedly connected to the bottom inner wall of the material feeding box (45). The bottom end of the material discharge pipe (46) extends into the portal frame (30) and corresponds to the gap between the outer ring (1) and the inner ring (2) of the bearing. A material feed pipe (47) is fixedly connected through the top inner wall of the material feeding box (45). A stepper motor II (48) is fixedly connected at the center of one side of the material feeding box (45). The output shaft of the stepper motor II (48) extends into the material feeding box (45) and is fixedly connected to a material transfer plate (49). Multiple material placement slots (50) are evenly spaced on the material transfer plate (49). The material placement slots (50) are used to support the balls (5). The stepper motor II (48) is started to drive the material transfer plate (49) to rotate so as to transport the balls (5) to the material feed box. At the material discharge pipe (46), the material is fed onto the annular elastic cushion (13) for buffering. A support ring (24) is fixedly fitted on the support bracket (12). Multiple support boxes (25) are fixedly connected at equal intervals on one side inner wall of the support ring (24). A moving rod (26) is slidably connected inside the support box (25). One end of the moving rod (26) extends into the support ring (24) and is fixedly connected to a clamping plate (27). Multiple clamping plates (26) are fixedly connected to the support ring (24). 7) Used to clamp the outer ring (1) of the bearing. An electromagnet I (28) is fixedly connected to the inner wall of one side of the support box (25), and an electromagnet II (29) is fixedly connected to the other end of the moving rod (26). The sides of the electromagnet I (28) and the electromagnet II (29) that are close to each other are set with the same pole. When the electromagnet I (28) and the electromagnet II (29) are energized, a repulsive magnetic force is generated, which pushes the moving rod (26) to move the clamping plate (27) to clamp the outer ring (1) of the bearing.

10. The manufacturing process of the high-sealing, high-speed miniature ball bearing according to claim 5, characterized in that, It also includes a vibration sensor connected to the drive motor (21).

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