Machining method of hub bearing unit for vehicle

Abstract

The invention discloses a machining method for a hub bearing unit for a vehicle. The machining method comprises the steps that a, preparation is conducted before machining; b, conveying; c, press fitting of the first inner ring; d, press fitting of the second inner ring; and e, machining is completed. An outer ring is placed on the placing base to be conveyed, then the outer ring is jacked to the press-fitting table top through the lifting assembly, the top of the outer ring penetrates out of a through hole in the center of the press-fitting table top, the outer ring is fixed through fixing pieces on the two sides of the press-fitting table top, and after the first inner ring is pressed into the outer ring through the press-fitting assembly, the first inner ring is pressed into the outer ring through the press-fitting assembly and is matched with a limiting pin; after the press-fitting table is overturned, the second inner ring is pressed into the outer ring, a two-way press-fitting table overturning mechanism is adopted to replace a traditional multi-time disassembling and clamping mode, double-inner-ring press-fitting under the condition of single-time clamping of the outer ring and the matched design of the press-fitting table and the limiting pin are achieved, and after press-fitting of the first inner ring is completed, the workbench is directly overturned for press-fitting of the second inner ring. And repeated positioning errors are eliminated.

Description

Technical Field

[0001] This invention belongs to the field of bearing equipment technology, and specifically relates to a processing method for an automotive wheel hub bearing unit. Background Technology

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support rotating mechanical parts, reduce the coefficient of friction during their movement, and ensure their rotational accuracy.

[0003] This application mainly relates to wheel hub bearings, which are an important component of automobiles. The main functions of wheel hub bearings are to bear weight and provide precise guidance for the rotation of the wheel hub. Wheel hub bearings bear both radial and axial loads, and must support the overall weight of the automobile as well as withstand the combined dynamic loads of the vehicle under various driving conditions.

[0004] In the existing technology, during the processing of the wheel hub bearing unit, the outer ring is first fixed and clamped, then the inner ring at one end is pressed into the outer ring by a pressure rod, then the outer ring is released, flipped, and the inner ring at the other end is pressed into the outer ring by the pressure rod. The operation is cumbersome and involves clamping the outer ring multiple times, resulting in low pressing accuracy and wasting time and effort. Summary of the Invention

[0005] The purpose of this invention is to solve the aforementioned technical problems existing in the prior art and to provide a processing method for automotive wheel hub bearing units. The method involves placing the outer ring on a placement seat, then placing the placement seat on a conveying assembly for transport. The conveying assembly transports the outer ring above a lifting assembly, which then lifts the outer ring to a pressing table. The flange at the bottom of the outer ring rests against the bottom of the pressing table, and the top of the outer ring passes through a through hole in the center of the pressing table. The outer ring is fixed by fasteners on both sides of the pressing table. The lifting assembly resets the placement seat, and the operator simultaneously uses screws to fix the flange to the bottom of the pressing table, improving the stability between the outer ring and the pressing table. After the first inner ring is pressed into the outer ring by the pressing assembly, a limiting pin is used to flip the pressing table, and then the second inner ring is pressed into the outer ring, completing the processing of the wheel hub bearing unit. A bidirectional pressing table flipping mechanism replaces the traditional multiple disassembly and clamping method, achieving double inner ring pressing under single outer ring clamping conditions. Through the design of the flip-up pressing table and the matching limit pins, the worktable can be flipped directly to perform the second pressing of the inner ring after the first pressing of the inner ring is completed, eliminating the error of repeated positioning. The linkage control of the conveying component and the lifting component ensures seamless connection between the conveying, positioning and pressing processes of the outer ring.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A method for manufacturing a vehicle wheel hub bearing unit, the wheel hub bearing unit comprising: an outer ring, a flange, an inner ring one, an inner ring two, and rolling elements, wherein both inner ring one and inner ring two are disposed within the outer ring, and rolling elements are disposed between inner ring one and the outer ring, and between inner ring two and the outer ring, wherein a flange is disposed at one end of the outer ring, a sealing body one is disposed between one end of the outer ring and the end of inner ring one away from inner ring two, and a sealing body two is disposed between the other end of the outer ring and the end of inner ring two away from inner ring one, the method comprising the following steps: a. Preparations before processing First, prepare all the components of the wheel hub bearing: outer ring, inner ring one, inner ring two, and the corresponding rolling elements; clean each component, and reset and clean the machining table. b. Conveying The outer ring is placed on the conveying assembly at the bottom of the processing table for conveying. The conveying assembly is equipped with a placement seat. The outer ring is placed on the placement seat with the flange end facing down. The conveying assembly conveys the placement seat with the outer ring. c. Pressing of inner ring one 1) Pushing The conveying component transports the outer ring to the installation position, and the lifting component controls the placement seat to drive the outer ring to rise, so that the outer ring rises to the pressing table surface of the processing table. 2) Fixed The outer ring rises to the pressing table, the fixing parts on both sides of the top surface of the pressing table move, the fixing parts clamp the outer side wall of the outer ring, then the lifting assembly resets, and controls the placement seat to return to the conveying assembly, and then the flange at the end of the outer ring is fixed to the bottom surface of the pressing table by screws. 3) Press fitting After the rolling element is connected to the inner ring, it is placed at one end of the outer ring. Then, the press assembly controls the pressure rod to descend, and the pressure rod abuts against the top surface of the inner ring. The press assembly controls the pressure rod to press down, thereby pressing the inner ring into one end of the outer ring. d. Pressing of inner ring two 1) Flip First, remove the limit pin located at the bottom of the pressing table. Then, use the handle to control the pressing table to flip it so that the bottom of the pressing table faces upwards, and the outer ring at the flange end faces upwards. After flipping, reset the limit pin. 2) Press fitting After the rolling element is connected to the inner ring two, it is placed at the other end of the outer ring. Then, the press-fitting assembly controls the pressure rod to descend. The pressure rod abuts against the top surface of the inner ring two. The press-fitting assembly controls the pressure rod to press down, thereby pressing the inner ring two into the other end of the outer ring. e. Complete processing After pressing is completed, the pressing table is flipped and reset, and the screws on the flange are unscrewed. Then, the lifting assembly controls the placement seat on the conveying assembly to rise. The placement seat rests against the bottom surface of the flange, the fastener loosens the outer ring, and the outer ring falls into the placement seat. Then, the lifting assembly resets, the placement seat falls onto the conveying assembly, and the conveying assembly sends out the placement seat with the outer ring.

[0007] Furthermore, the processing table includes a base, a lifting assembly, a mounting platform, a conveying assembly, a gantry frame, and a pressing table. The center of the base is recessed downward to form a mounting cavity. The lifting assembly is fixedly connected to the mounting cavity. The mounting platform is fixedly connected to both ends of the base. The conveying assembly is fixedly connected to the top surface of the mounting platform. The bottom of the gantry frame is fixedly connected to the mounting platform. The pressing table is rotatably connected to the gantry frame and is located above the conveying assembly. The top of the gantry frame is equipped with a pressing assembly. The bottom of the pressing assembly is connected to a pressure rod. The pressure rod acts on the inner ring to press the inner ring into the outer ring.

[0008] Furthermore, the conveying assembly includes a motor, a conveying frame, a conveying roller, and a placement seat. The conveying roller is uniformly rotated and connected inside the conveying frame. The motor drives the conveying roller to rotate. The placement seat is located on the conveying roller, and the conveying roller is used to convey the placement seat.

[0009] Furthermore, the placement seat includes a seat body and a limiting post. The limiting post is set to the connection hole on the flange. When the outer ring is placed on the placement seat, the flange abuts against the top surface of the seat body, and the limiting post is inserted into the connection hole.

[0010] Furthermore, the lifting assembly includes a U-shaped fixing frame and a lifting cylinder. The bottom of the U-shaped fixing frame is fixed in the mounting cavity, and the lifting cylinder is fixedly connected in the U-shaped fixing frame. The output end of the lifting cylinder is provided with a push rod, which passes through the top of the U-shaped fixing frame, and the top of the push rod is provided with a push block.

[0011] Furthermore, the pressing table includes a table plate, a rotating shaft, a handle, and a fixing component. Connecting blocks are provided on both sides of the table plate, and a crossbar is provided on the gantry frame corresponding to the connecting blocks. The connecting block on one side is rotatably connected to the crossbar via a rotating shaft, and the connecting block on the other side is rotatably connected to the crossbar via a handle. The table plate is rotated by controlling the handle. The fixing component is located on the top of the table plate and is used to clamp the outer ring.

[0012] Furthermore, a through hole runs through the center of the top surface of the platform, and the through hole is matched with the outer ring. The diameter of the through hole is smaller than the diameter of the flange. After the lifting assembly controls the outer ring to pass through the through hole, the top surface of the flange abuts against the bottom surface of the platform. The bottom surface of the platform is provided with a threaded connection hole corresponding to the connection hole of the flange. Fixing components are provided on both sides of the top surface of the platform corresponding to the through hole. The fixing components are used to clamp the outer ring.

[0013] Furthermore, the fixing components include a slide rail, an arc-shaped clamp, and an adjusting bracket. The slide rail is fixedly connected to both sides of the top surface of the platform. The bottom of the adjusting bracket is provided with a sliding groove, which is matched with the slide rail. The adjusting bracket is slidably connected to the slide rail. The end of the adjusting bracket near the through hole is fixedly connected to the arc-shaped clamp, which is clamped to the outer side wall of the outer ring. The top of the adjusting bracket is provided with a connecting screw. The slide rail has two threaded connecting holes evenly distributed. The bottom of the connecting screw passes through the adjusting bracket and is tightened in the two threaded connecting holes.

[0014] Furthermore, the pressing assembly includes a push cylinder, a lifting frame, and a pressure rod. A cylinder mounting base is fixedly connected to the top of the gantry frame, and the push cylinder is fixedly connected to the cylinder mounting base. The output end of the push cylinder is connected to a push guide rod, and the bottom of the push guide rod is fixedly connected to the top of the lifting frame. The top of the pressure rod is fixedly connected to the bottom of the lifting frame by fasteners. The fasteners include L-shaped clips and sliding rails. The sliding rails are fixedly connected to both sides of the bottom of the lifting frame. The L-shaped clips have sliding grooves corresponding to the sliding rails. The L-shaped clips are slidably connected to the sliding rails through the sliding grooves. The L-shaped clips are equipped with connecting bolts. The sliding rails have three threaded connecting holes evenly distributed. The connecting bolts pass through the L-shaped clips and are tightened in the three threaded connecting holes. The L-shaped clips are equipped with an arc-shaped tightening part, which is tightened against the inner wall of the pressure rod.

[0015] Furthermore, guide components are provided on both sides of the gantry frame corresponding to the lifting frame. The guide components include guide frames and guide columns. The guide frames are fixedly connected to both sides of the gantry frame corresponding to the lifting frames. The guide frames are provided with guide grooves. The guide columns are fixedly connected in the guide grooves. Guide blocks are fixedly connected to both sides of the lifting frames. The guide blocks are located in the guide grooves. The guide columns pass through the guide blocks.

[0016] The present invention, by adopting the above-described technical solution, has the following beneficial effects: This invention involves placing the outer ring onto a placement seat, which is then placed on a conveying assembly for transport. The conveying assembly transports the outer ring above a lifting assembly, which then lifts the outer ring to a pressing table. The flange at the bottom of the outer ring rests against the bottom of the pressing table, while the top of the outer ring protrudes through a through hole in the center of the pressing table. The outer ring is secured by fasteners on both sides of the pressing table. The lifting assembly resets the placement seat, and the operator simultaneously secures the flange to the bottom of the pressing table using screws, improving the stability between the outer ring and the pressing table. After the first inner ring is pressed into the outer ring by the pressing assembly, the pressing table is flipped with the help of a limiting pin, and then the second inner ring is pressed into the outer ring, completing the processing of the wheel hub bearing unit. This bidirectional pressing table flipping mechanism replaces the traditional multiple disassembly and clamping method, enabling double inner ring pressing under single outer ring clamping conditions. Through the design of the flip-up pressing table and the matching limit pins, the worktable can be flipped directly to perform the second pressing of the inner ring after the first pressing of the inner ring is completed, eliminating the error of repeated positioning. The linkage control of the conveying component and the lifting component ensures seamless connection between the conveying, positioning and pressing processes of the outer ring.

[0017] The processing table in this invention includes a base, a lifting assembly, a mounting platform, a conveying assembly, a gantry frame, and a pressing table. The center of the base is recessed downwards to form a mounting cavity. The lifting assembly is fixedly connected to the mounting cavity. The mounting platform is fixedly connected to both ends of the base. The conveying assembly is fixedly connected to the top surface of the mounting platform. The bottom of the gantry frame is fixedly connected to the mounting platform. The pressing table is rotatably connected to the gantry frame and is located above the conveying assembly. A pressing assembly is located at the top of the gantry frame, and a pressure rod is connected to the bottom of the pressing assembly. The pressure rod acts on the inner ring, pressing the inner ring into the outer ring. Through the integrated design of the base, lifting assembly, conveying assembly, and gantry frame, the processing process is automated and modularized. The mounting cavity of the base provides stable support, the lifting assembly ensures accurate lifting and positioning of the outer ring, avoiding errors caused by manual operation, and the gantry frame fixes the pressing assembly. Combined with the rotating pressing table, it allows for rapid flipping operations, reducing workpiece assembly and disassembly time, improving overall processing efficiency, eliminating repeated positioning errors, and ensuring consistent pressing.

[0018] The pressing table in this invention includes a table plate, a rotating shaft, a handle, and a fixing component. Connecting blocks are provided on both sides of the table plate, and a crossbar is provided on the gantry frame corresponding to each connecting block. The connecting block on one side is rotatably connected to the crossbar via the rotating shaft, while the connecting block on the other side is rotatably connected to the crossbar via the handle. The table plate is rotated by controlling the handle. The fixing component is located on the top of the table plate and is used to clamp the outer ring. This combination of the rotating shaft, handle, and fixing component enables easy flipping of the pressing table. The operator can manually rotate the table plate using only the handle without disassembling the outer ring. The fixing component remains clamped during the outer ring flipping process, preventing the workpiece from falling off or loosening, ensuring processing continuity. This structure reduces reliance on additional flipping equipment, improves space utilization, reduces operational risks, and enhances overall stability. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of a vehicle wheel hub bearing unit according to the present invention; Figure 2 for Figure 1 Cross-sectional view; Figure 3 This is a schematic diagram of the structure of the present invention when it is located on the outer ring of the conveyor belt of the processing table; Figure 4 This is a schematic diagram of the structure of the present invention when the lifting component controls the placement platform to be lifted. Figure 5 This is a schematic diagram of the structure of the present invention when the outer ring is fixed to the pressing table surface; Figure 6 This is a schematic diagram of the structure of the present invention, where the inner ring is pressed into the outer ring; Figure 7 This is a schematic diagram of the structure of the present invention after the pressing table surface has been flipped over; Figure 8 This is a schematic diagram of the processing table in this invention; Figure 9 This is a schematic diagram of the press-fitting platform in this invention; Figure 10 This is a schematic diagram of the connection between the lifting frame and the pressure sensor of the present invention; Figure 11 This is a schematic diagram of the lifting frame in this invention.

[0020] In the diagram, 1-outer ring; 2-flange; 3-inner ring one; 4-inner ring two; 5-rolling element; 6-seal body one; 7-seal body two; 8-processing table; 9-base; 10-lifting assembly; 11-mounting platform; 12-conveyor assembly; 13-gantry frame; 14-pressing table; 15-mounting cavity; 16-pressing assembly; 17-pressure rod; 18-conveyor frame; 19-conveyor roller; 20-placement seat; 21-seat body; 22-limiting post; 23-connecting hole; 24-U-shaped fixing frame; 25-lifting cylinder; 26-push rod; 27-connecting block; 28-table; 29-Handle; 30-Fixed component; 31-Crossbar; 32-Through hole; 33-Slide rail; 34-Arc-shaped clamp; 35-Adjusting bracket; 36-Slide groove; 37-Connecting screw; 38-Threaded connection hole two; 39-Push cylinder; 40-Lifting frame; 41-Cylinder mounting base; 42-Push guide rod; 43-Fastener; 44-L-shaped clamp; 45-Sliding rail; 46-Sliding groove; 47-Connecting bolt; 48-Threaded connection hole three; 49-Arc-shaped tightening part; 50-Guide assembly; 51-Guide frame; 52-Guide column; 53-Guide groove; 54-Guide block. Detailed Implementation

[0021] like Figures 1 to 11 The diagram illustrates a processing method for a vehicle wheel hub bearing unit according to the present invention. The wheel hub bearing unit includes: an outer ring 1, a flange 2, an inner ring 1 3, an inner ring 2 4, and rolling elements 5. The inner ring 1 3 and the inner ring 2 4 are both located within the outer ring 1. Rolling elements 5 are provided between the inner ring 1 3 and the outer ring 1, and between the inner ring 2 4 and the outer ring 1. The flange 2 is located at one end of the outer ring 1. A sealing body 1 6 is provided between one end of the outer ring 1 and the end of the inner ring 1 3 furthest from the inner ring 2 4. A sealing body 2 7 is provided between the other end of the outer ring 1 and the end of the inner ring 2 4 furthest from the inner ring 1 3. The method includes the following steps: a. Preparations before processing First, prepare the various components of the wheel hub bearing: outer ring 1, inner ring 1 3, inner ring 2 4, and the corresponding rolling elements 5; clean each component, and reset and clean the processing table 8 at the same time. b. Conveying The outer ring 1 is placed on the conveying assembly 12 at the bottom of the processing table 8 for conveying. The conveying assembly 12 is equipped with a placement seat 20. The outer ring 1 is placed on the placement seat 20 with one end of the flange 2 facing down. The conveying assembly 12 conveys the placement seat 20 with the outer ring 1. c. Pressing of inner ring one 1) Pushing The conveying assembly 12 conveys the outer ring 1 to the installation position, and the lifting assembly 10 controls the placement seat 20 to drive the outer ring 1 to rise, so that the outer ring 1 rises to the pressing table 14 of the processing table 8. 2) Fixed The outer ring 1 rises to the pressing table 14, and the fixing parts 30 located on both sides of the top surface of the pressing table 14 move. The fixing parts 30 clamp the outer side wall of the outer ring 1. Then the lifting assembly 10 resets and controls the placement seat 20 to return to the conveying assembly 12. Then the flange 2 at the end of the outer ring 1 is fixed to the bottom surface of the pressing table 14 by screws. 3) Press fitting After the rolling element 5 is connected to the inner ring 3, it is placed at one end of the outer ring 1. Then, the pressing assembly 16 controls the pressing rod 17 to descend. The pressing rod 17 abuts against the top surface of the inner ring 3. The pressing assembly 16 controls the pressing rod 17 to press down, thereby pressing the inner ring 3 into one end of the outer ring 1. d. Pressing of inner ring two 1) Flip First, remove the limiting pin located at the bottom of the pressing table 14. Then, control the pressing table 14 to flip it over using the handle 29 so that the bottom surface of the pressing table 14 faces upwards, and the outer ring 1 is positioned at one end of the flange 2 facing upwards. After flipping, reset the limiting pin. 2) Press fitting After connecting the rolling element 5 to the inner ring 4, place it at the other end of the outer ring 1. Then, the pressing assembly 16 controls the pressing rod 17 to descend, and the pressing rod 17 abuts against the top surface of the inner ring 4. The pressing assembly 16 controls the pressing rod 17 to press down, thereby pressing the inner ring 4 into the other end of the outer ring 1; e. Complete the processing. After pressing is completed, the pressing table 14 is flipped and reset, and the screws on the flange 2 are unscrewed. Then, the lifting assembly 10 controls the placement seat 20 on the conveying assembly 12 to rise. The placement seat 20 abuts against the bottom surface of the flange 2. The fixing part 30 loosens the outer ring 1, and the outer ring 1 falls into the placement seat 20. Then, the lifting assembly 10 resets, and the placement seat 20 falls onto the conveying assembly 12. The conveying assembly 12 sends out the placement seat 20 with the outer ring 1.

[0022] The processing table 8 includes a base 9, a lifting assembly 10, a mounting platform 11, a conveying assembly 12, a gantry frame 13, and a pressing table 14. The center of the base 9 is recessed downward to form a mounting cavity 15. The lifting assembly 10 is fixedly connected to the mounting cavity 15. The mounting platform 11 is fixedly connected to both ends of the base 9. The conveying assembly 12 is fixedly connected to the top surface of the mounting platform 11. The bottom of the gantry frame 13 is fixedly connected to the mounting platform 11. The pressing table 14 is rotatably connected to the gantry frame 13. The pressing table 14 is located above the conveying assembly 12. The top of the gantry frame 13 is provided with a pressing assembly 16. The bottom of the pressing assembly 16 is connected to a pressure rod 17. The pressure rod 17 acts on the inner ring to press the inner ring into the outer ring 1. Through the integrated design of the base 9, lifting assembly 10, conveying assembly 12 and gantry 13, the processing process is automated and modularized. The mounting cavity 15 of the base 9 provides stable support, the lifting assembly 10 ensures accurate lifting and positioning of the outer ring 1, and avoids errors caused by manual operation. The gantry 13 fixes the pressing assembly 16, and together with the rotating pressing table 14, it allows for quick flipping operations, reduces workpiece disassembly and assembly time, improves overall processing efficiency, eliminates repeated positioning errors, and ensures pressing consistency.

[0023] The conveying assembly 12 includes a motor, a conveyor frame 18, conveyor rollers 19, and a placement seat 20. The conveyor rollers 19 are uniformly rotatable within the conveyor frame 18, and the motor drives the conveyor rollers 19 to rotate. The placement seat 20 is located on the conveyor rollers 19, and the conveyor rollers 19 are used to convey the placement seat 20. By using a motor-driven conveyor rollers 19 and placement seat 20, automated conveying of the outer ring 1 workpiece is achieved, significantly reducing manual intervention and handling time. The uniform distribution of the conveyor rollers 19 ensures smooth movement of the placement seat 20, preventing workpiece slippage or collision, and improving the continuity and safety of the production line. The placement seat 20 is reusable, reducing equipment wear, and the motor control enables precise start and stop, allowing the outer ring 1 to be quickly positioned to the processing position, making it suitable for mass production environments.

[0024] The placement seat 20 includes a seat body 21 and a limiting post 22. The limiting post 22 is set to correspond to the connection hole 23 on the flange 2. When the outer ring 1 is placed on the placement seat 20, the flange 2 abuts against the top surface of the seat body 21, and the limiting post 22 is inserted into the connection hole 23. The matching design of the seat body 21 and the limiting post 22 ensures the accurate placement and fixation of the outer ring 1. The limiting post 22 is embedded in the connection hole 23 of the flange 2, which effectively prevents the workpiece from shifting or rotating during conveying or lifting, avoiding positioning deviation. This structure simplifies the operation steps, and the operator can quickly align the outer ring 1 with the processing table 8 without additional adjustments, improving the accuracy of the pressing stage.

[0025] The lifting assembly 10 includes a U-shaped fixing frame 24 and a lifting cylinder 25. The bottom of the U-shaped fixing frame 24 is fixed in the mounting cavity 15, and the lifting cylinder 25 is fixedly connected in the U-shaped fixing frame 24. The output end of the lifting cylinder 25 is provided with a push rod 26, which passes through the top of the U-shaped fixing frame 24. The top of the push rod 26 is provided with a push block. The U-shaped fixing frame 24 provides rigid and stable support. Combined with the hydraulic drive of the lifting cylinder 25, it realizes smooth and controllable lifting of the outer ring 1. The push rod 26 and the push block ensure that the force is applied evenly, reducing the vibration or tilting of the workpiece during the lifting process.

[0026] The pressing table 14 includes a table plate 28, a rotating shaft, a handle 29, and a fixing component 30. Connecting blocks 27 are provided on both sides of the table plate 28. A crossbar 31 is provided on the gantry frame 13 corresponding to the connecting blocks 27. The connecting block 27 on one side is rotatably connected to the crossbar 31 via the rotating shaft, while the connecting block 27 on the other side is rotatably connected to the crossbar 31 via the handle 29. The table plate 28 is rotated by controlling the handle 29. The fixing component 30 is located on the top of the table plate 28 and is used to clamp the outer ring 1. The combined design of the rotating shaft, handle 29, and fixing component 30 enables the simple flipping function of the pressing table 14. The operator can manually rotate the table plate 28 using the handle 29 without disassembling the outer ring 1. The fixing component 30 maintains a clamped state during the flipping of the outer ring 1, preventing the workpiece from falling off or loosening, ensuring processing continuity. This structure reduces reliance on additional flipping equipment, improves space utilization, reduces operational risks, and enhances overall stability.

[0027] A through hole 32 runs through the center of the top surface of the platform 28. The through hole 32 is matched with the outer ring 1. The diameter of the through hole 32 is smaller than the diameter of the flange 2. After the lifting assembly 10 controls the outer ring 1 to pass through the through hole 32, the top surface of the flange 2 rests against the bottom surface of the platform 28. The bottom surface of the platform 28 has a threaded connection hole corresponding to the connection hole 23 of the flange 2. Both sides of the top surface of the platform 28 are equipped with fixing parts 30 corresponding to the through hole 32. The fixing parts 30 are used to clamp the outer ring 1. The design of the through hole 32 matching the size of the outer ring 1 and having a smaller diameter than the flange 2 allows the outer ring 1 to pass through smoothly while the flange 2 is locked in place, forming a reliable self-locking mechanism to ensure that the workpiece remains stable during the press-fitting process. The threaded connection hole facilitates the bolt tightening of the flange 2, preventing workpiece displacement during press-fitting and improving press-fitting accuracy. Combined with the double clamping of the fixing parts 30, it reduces the impact of vibration, makes the inner ring press-fitting more uniform, avoids damage to the rolling elements 5, and improves the overall machining accuracy.

[0028] The fixing component 30 includes a slide rail 33, an arc-shaped clamp 34, and an adjusting frame 35. The slide rail 33 is fixedly connected to both sides of the top surface of the platform 28. The bottom of the adjusting frame 35 is provided with a slide groove 36, which is matched with the slide rail 33. The adjusting frame 35 is slidably connected to the slide rail 33. One end of the adjusting frame 35 near the through hole 32 is fixedly connected to the arc-shaped clamp 34. The arc-shaped clamp 34 is clamped on the outer side wall of the outer ring 1. The top of the adjusting frame 35 is provided with a connecting screw 37. The slide rail 33 has evenly distributed threaded connecting holes 38. The bottom of the connecting screw 37 passes through the adjusting frame 35 and is tightened in the threaded connecting holes 38. The sliding design of the slide rail 33 and the adjusting bracket 35 allows the position of the arc-shaped clamp 34 to be adjusted to accommodate outer rings 1 of different diameters, enhancing the versatility of the equipment; the arc-shaped surface of the arc-shaped clamp 34 fits against the wall of the outer ring 1, providing uniform clamping force and avoiding local stress damage to the workpiece; the connecting screw 37 fixes the adjusting bracket 35 through the threaded hole 38, ensuring stable clamping force, preventing loosening during pressing, and improving operational stability.

[0029] The pressing assembly 16 includes a push cylinder 39, a lifting frame 40, and a pressure rod 17. A cylinder mounting base 41 is fixedly connected to the top of the gantry frame 13. The push cylinder 39 is fixedly connected to the cylinder mounting base 41, and its output end is connected to a push guide rod 42. The bottom of the push guide rod 42 is fixedly connected to the top of the lifting frame 40. The top of the pressure rod 17 is fixedly connected to the bottom of the lifting frame 40 by fasteners 43, which include an L-shaped clamp 44 and a sliding rail 45. 45 is fixedly connected to both sides of the bottom of the lifting frame 40. The L-shaped clamp 44 is provided with a sliding groove 46 corresponding to the sliding rail 45. The L-shaped clamp 44 is slidably connected to the sliding rail 45 through the sliding groove 46. The L-shaped clamp 44 is provided with a connecting bolt 47. The sliding rail 45 is evenly distributed with three threaded connecting holes 48. The connecting bolt 47 passes through the L-shaped clamp 44 and is tightened in the three threaded connecting holes 48. The L-shaped clamp 44 is provided with an arc-shaped tightening part 49. The arc-shaped tightening part 49 is tightened against the inner wall of the pressure rod 17. The push cylinder 39 provides controllable and uniform downward pressure, which, combined with the lifting frame 40, ensures the vertical movement of the pressure rod 17 and prevents skewing during inner ring pressing. The fastener 43, consisting of the L-shaped clamp 44 and the sliding rail 45, allows for quick replacement and position adjustment of the pressure rod 17 to adapt to different inner ring sizes and improve equipment flexibility. The arc-shaped tightening part 49 fits against the inner wall of the pressure rod 17, enhancing connection stability, preventing the pressure rod 17 from loosening during pressing, ensuring consistent pressing depth, and reducing the risk of damage to the rolling elements 5. The overall assembly optimizes pressing force control and improves processing accuracy.

[0030] Guide components 50 are provided on both sides of the gantry frame 13 corresponding to the lifting frame 40. The guide components 50 include guide frames 51 and guide columns 52. The guide frames 51 are fixedly connected to both sides of the lifting frame 40 on both sides of the gantry frame 13. The guide frames 51 are provided with guide grooves 53. The guide columns 52 are fixedly connected in the guide grooves 53. Guide blocks 54 are fixedly connected to both sides of the lifting frame 40. The guide blocks 54 are located in the guide grooves 53, and the guide columns 52 pass through the guide blocks 54. The cooperative design of the guide frames 51, guide columns 52 and guide blocks 54 strictly constrains the vertical movement of the lifting frame 40, eliminates the lateral offset when the pressure rod 17 is pressed down, ensures that the inner ring and outer ring 1 are concentrically pressed, and improves the running accuracy of the bearing unit. The guide grooves 53 and guide columns 52 help reduce friction loss, extend equipment life, and reduce noise. This component enhances overall stability, prevents pressing failure due to vibration, improves processing reliability, and is suitable for the production environment of high-precision wheel hub bearings.

[0031] This invention involves placing the outer ring 1 onto the placement seat 20, then placing the placement seat 20 onto the conveying assembly 12 for transport. The conveying assembly 12 transports the outer ring 1 above the lifting assembly 10, and then the lifting assembly 10 lifts the outer ring 1 to the pressing table 14. The flange 2 at the bottom of the outer ring 1 abuts against the bottom of the pressing table 14, and the top of the outer ring 1 protrudes through the through hole 32 in the center of the pressing table 14. The outer ring 1 is fixed by the fixing members 30 on both sides of the pressing table 14. The lifting assembly 10 drives... The placement seat 20 is reset, and the operator simultaneously fixes the flange 2 to the bottom of the pressing table 14 using screws, improving the stability between the outer ring 1 and the pressing table 14. After the inner ring 3 is pressed into the outer ring 1 by the pressing assembly 16, the pressing table is flipped with the help of the limiting pin, and then the inner ring 4 is pressed into the outer ring 1, completing the processing of the wheel hub bearing unit. The bidirectional pressing table 14 flipping mechanism replaces the traditional multiple disassembly and clamping method, realizing the pressing of double inner rings under the condition of single clamping of the outer ring 1. Through the cooperative design of the flippable pressing table 14 and the limiting pin, the worktable is directly flipped after the pressing of the inner ring 3 is completed for the pressing of the inner ring 4, eliminating the error of repeated positioning. The linkage control of the conveying assembly 12 and the lifting assembly 10 enables seamless connection between the conveying, positioning and pressing processes of the outer ring 1.

[0032] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. A method for manufacturing a vehicle wheel hub bearing unit, the wheel hub bearing unit comprising: The system comprises an outer ring, a flange, an inner ring one, an inner ring two, and rolling elements, wherein both inner ring one and inner ring two are disposed within the outer ring, and rolling elements are disposed between inner ring one and the outer ring, and between inner ring two and the outer ring. A flange is disposed at one end of the outer ring. A sealing body one is disposed between one end of the outer ring and the end of inner ring one furthest from inner ring two, and a sealing body two is disposed between the other end of the outer ring and the end of inner ring two furthest from inner ring one. The system is characterized by the following steps: a. Preparations before processing First, prepare all the components of the wheel hub bearing: outer ring, inner ring one, inner ring two, and the corresponding rolling elements; clean each component, and reset and clean the machining table. b. Conveying The outer ring is placed on the conveying assembly at the bottom of the processing table for conveying. The conveying assembly is equipped with a placement seat. The outer ring is placed on the placement seat with the flange end facing down. The conveying assembly conveys the placement seat with the outer ring. c. Pressing of inner ring one 1) Pushing The conveying component transports the outer ring to the installation position, and the lifting component controls the placement seat to drive the outer ring to rise, so that the outer ring rises to the pressing table surface of the processing table. 2) Fixed The outer ring rises to the pressing table, the fixing parts on both sides of the top surface of the pressing table move, the fixing parts clamp the outer side wall of the outer ring, then the lifting assembly resets, and controls the placement seat to return to the conveying assembly, and then the flange at the end of the outer ring is fixed to the bottom surface of the pressing table by screws. 3) Press fitting After the rolling element is connected to the inner ring, it is placed at one end of the outer ring. Then, the press assembly controls the pressure rod to descend, and the pressure rod abuts against the top surface of the inner ring. The press assembly controls the pressure rod to press down, thereby pressing the inner ring into one end of the outer ring. d. Pressing of inner ring two 1) Flip First, remove the limit pin located at the bottom of the pressing table. Then, use the handle to control the pressing table to flip it so that the bottom of the pressing table faces upwards, and the outer ring at the flange end faces upwards. After flipping, reset the limit pin. 2) Press fitting After the rolling element is connected to the inner ring two, it is placed at the other end of the outer ring. Then, the press-fitting assembly controls the pressure rod to descend. The pressure rod abuts against the top surface of the inner ring two. The press-fitting assembly controls the pressure rod to press down, thereby pressing the inner ring two into the other end of the outer ring. e. Complete processing After pressing is completed, the pressing table is flipped and reset, and the screws on the flange are unscrewed. Then, the lifting assembly controls the placement seat on the conveying assembly to rise. The placement seat rests against the bottom surface of the flange, the fastener loosens the outer ring, and the outer ring falls into the placement seat. Then, the lifting assembly resets, the placement seat falls onto the conveying assembly, and the conveying assembly sends out the placement seat with the outer ring.

2. The processing method of an automotive wheel hub bearing unit according to claim 1, characterized in that: The processing table includes a base, a lifting assembly, a mounting platform, a conveying assembly, a gantry frame, and a pressing table. The center of the base is recessed downward to form a mounting cavity. The lifting assembly is fixedly connected to the mounting cavity. The mounting platform is fixedly connected to both ends of the base. The conveying assembly is fixedly connected to the top surface of the mounting platform. The bottom of the gantry frame is fixedly connected to the mounting platform. The pressing table is rotatably connected to the gantry frame and is located above the conveying assembly. A pressing assembly is provided at the top of the gantry frame. A pressure rod is connected to the bottom of the pressing assembly. The pressure rod acts on the inner ring to press the inner ring into the outer ring.

3. The processing method of an automotive wheel hub bearing unit according to claim 2, characterized in that: The conveying assembly includes a motor, a conveying frame, a conveying roller, and a placement seat. The conveying roller is uniformly rotatably connected within the conveying frame. The motor drives the conveying roller to rotate. The placement seat is located on the conveying roller. The conveying roller is used to convey the placement seat.

4. The processing method of an automotive wheel hub bearing unit according to claim 3, characterized in that: The placement seat includes a seat body and a limiting post. The limiting post is set corresponding to the connection hole on the flange. When the outer ring is placed on the placement seat, the flange abuts against the top surface of the seat body, and the limiting post is inserted into the connection hole.

5. The processing method of an automotive wheel hub bearing unit according to claim 2, characterized in that: The lifting assembly includes a U-shaped fixing frame and a lifting cylinder. The bottom of the U-shaped fixing frame is fixed in the mounting cavity, and the lifting cylinder is fixedly connected in the U-shaped fixing frame. The output end of the lifting cylinder is provided with a push rod, which passes through the top of the U-shaped fixing frame, and the top of the push rod is provided with a push block.

6. The processing method of an automotive wheel hub bearing unit according to claim 2, characterized in that: The pressing table includes a table plate, a rotating shaft, a handle, and a fixing component. Connecting blocks are provided on both sides of the table plate. A crossbar is provided on the gantry frame corresponding to the connecting blocks. The connecting block on one side is rotatably connected to the crossbar via the rotating shaft, and the connecting block on the other side is rotatably connected to the crossbar via the handle. The table plate is rotated by controlling the handle. The fixing component is located on the top of the table plate and is used to clamp the outer ring.

7. A method for processing an automotive wheel hub bearing unit according to claim 6, characterized in that: A through hole is formed at the center of the top surface of the platform, and the through hole is matched with the outer ring. The diameter of the through hole is smaller than the diameter of the flange. After the lifting assembly controls the outer ring to pass through the through hole, the top surface of the flange abuts against the bottom surface of the platform. The bottom surface of the platform is provided with a threaded connection hole corresponding to the connection hole of the flange. The two sides of the top surface of the platform are provided with fixing members corresponding to the through hole. The fixing members are used to clamp the outer ring.

8. A method for processing an automotive wheel hub bearing unit according to claim 7, characterized in that: The fixing component includes a slide rail, an arc-shaped clamp, and an adjusting bracket. The slide rail is fixedly connected to both sides of the top surface of the platform. The bottom of the adjusting bracket is provided with a sliding groove, which is matched with the slide rail. The adjusting bracket is slidably connected to the slide rail. One end of the adjusting bracket near the through hole is fixedly connected to the arc-shaped clamp, which is clamped to the outer side wall of the outer ring. The top of the adjusting bracket is provided with a connecting screw. The slide rail has two threaded connecting holes evenly distributed. The bottom of the connecting screw passes through the adjusting bracket and is tightened in the two threaded connecting holes.

9. A method for processing an automotive wheel hub bearing unit according to claim 2, characterized in that: The pressing assembly includes a push cylinder, a lifting frame, and a pressure rod. A cylinder mounting base is fixedly connected to the top of the gantry frame. The push cylinder is fixedly connected to the cylinder mounting base. The output end of the push cylinder is connected to a push guide rod. The bottom of the push guide rod is fixedly connected to the top of the lifting frame. The top of the pressure rod is fixedly connected to the bottom of the lifting frame by fasteners. The fasteners include L-shaped clamps and sliding rails. The sliding rails are fixedly connected to both sides of the bottom of the lifting frame. The L-shaped clamps have sliding grooves corresponding to the sliding rails. The L-shaped clamps are slidably connected to the sliding rails through the sliding grooves. The L-shaped clamps have connecting bolts. The sliding rails have three threaded connecting holes evenly distributed. The connecting bolts pass through the L-shaped clamps and are tightened in the three threaded connecting holes. The L-shaped clamps have an arc-shaped tightening part that presses against the inner wall of the pressure rod.

10. A method for processing an automotive wheel hub bearing unit according to claim 9, characterized in that: The gantry frame has guide components on both sides corresponding to the lifting frame. The guide components include guide frames and guide columns. The guide frames are fixedly connected to both sides of the gantry frame corresponding to the lifting frame. The guide frames have guide grooves. The guide columns are fixedly connected in the guide grooves. The lifting frame has guide blocks fixedly connected to both sides. The guide blocks are located in the guide grooves. The guide columns pass through the guide blocks.

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