A hub production polishing device

Abstract

The application relates to the technical field of hub polishing, and particularly discloses a hub production polishing device, which comprises a base and further comprises: a polishing cylinder arranged on the base and internally provided with abrasive; a lifting table arranged on one side of the base and capable of performing lifting movement; a positioning disc located above the polishing cylinder and connected with the lifting table and capable of lifting and rotating under the drive of the lifting table; and a positioning assembly arranged on the positioning disc and comprising a plurality of clamping blocks capable of moving close to or away from each other and used for clamping and positioning the hub; the hub production polishing device realizes a 'rotation and automatic reciprocating lifting' compound motion mode of the hub through a lifting mechanism, the contact between the hub and the abrasive is more sufficient and intense, the polishing process is accelerated, and under the cooperation of the limiting assembly and the rolling shaft structure capable of rolling in the clamping block, the hub can automatically and smoothly change the clamping position in the polishing process, and the polishing dead angle problem caused by the shielding of the traditional clamp is solved.

Description

Technical Field

[0001] This invention relates to the field of wheel hub polishing technology, and more specifically to a wheel hub production polishing device. Background Technology

[0002] In the wheel hub production process, grinding and polishing are key steps to ensure the surface quality of the wheel hub and the effect of subsequent coating. In grinding and polishing, a clamp is usually used to fix and hold the edge of the wheel hub, and then the wheel hub is lowered into the grinding cylinder. Grinding is achieved through the relative movement of the abrasive and the surface of the wheel hub.

[0003] The authorized patent with publication number CN117464548B discloses a continuous wheel hub polishing device. Air enters the mounting component and is blown out from the first duct. The blown air impacts the gap between the wheel spokes and the inner wall of the wheel hub, blowing away the abrasive particles stuck in the gap. This prevents the abrasive particles from accumulating and getting stuck in the gap, which would otherwise prevent the gap between the wheel spokes and the inner wall of the wheel hub from being polished, resulting in incomplete wheel hub polishing and affecting the continuity of wheel hub polishing.

[0004] However, this technical solution still has the following problems in wheel hub grinding: the contact area between the clamp and the wheel hub is always blocked, and the abrasive cannot reach it, resulting in a grinding dead corner in this area. Even if the wheel hub rotates in the grinding cylinder, since there is no relative movement between the clamp and the wheel hub, the blocked area can never be exposed, ultimately causing uneven grinding of the wheel hub surface and affecting the overall product quality. Summary of the Invention

[0005] This invention provides a wheel hub production grinding device, which aims to solve the problem mentioned in the background art that the contact area between the clamp and the wheel hub is always blocked, and the abrasive cannot reach it, resulting in a grinding dead corner in this area.

[0006] The wheel hub production and grinding apparatus of the present invention includes a base, and further includes: A grinding cylinder is mounted on a base and contains abrasive material. The lifting platform is located on one side of the base and is capable of lifting. The positioning plate is located above the grinding cylinder and is connected to the lifting platform, which can be raised, lowered and rotated under the drive of the lifting platform; The positioning component, set on the positioning plate, includes multiple locking blocks that can move closer or further apart from each other for locking and positioning the wheel hub. Rollers for contacting the wheel hub are rotatably mounted on the locking blocks. The drive mechanism, mounted on the positioning disk, is used to drive the synchronous movement of multiple blocks of the positioning component; The lifting mechanism is connected between the lifting platform and the positioning plate, and can drive the positioning plate to move back and forth relative to the lifting platform when the positioning plate rotates; The limiting component, located inside the grinding cylinder, includes a limiting shaft that can elastically extend and retract. When the positioning plate drives the hub to descend to a predetermined height, the limiting shaft can be inserted into the spoke gap of the hub to prevent the hub from continuing to rotate with the positioning plate, causing relative rotation between the hub and the positioning plate, thereby changing the clamping position of the locking block on the hub.

[0007] Preferably, the lifting mechanism includes a threaded cylinder, a ring sleeve, and a support plate. The threaded cylinder is coaxially fixedly disposed at the lower part of the lifting platform, and its outer wall is provided with a reciprocating thread. The ring sleeve is sleeved on the outside of the threaded cylinder and cooperates with the reciprocating thread, so that it can reciprocate up and down along the threaded cylinder when rotating. The support plate is fixedly connected between the ring sleeve and the positioning plate, and is used to drive the ring sleeve to rotate synchronously when the positioning plate rotates.

[0008] Preferably, the limiting component further includes a base and an elastic element. The base is fixedly installed inside the grinding cylinder, and the elastic element is disposed between the limiting shaft and the base to provide elastic support force for the limiting shaft, so that the limiting shaft can retract when obstructed and reset after the obstruction is released.

[0009] Preferably, the card block has a V-shaped notch on the side near the center of the positioning disk, and two sets of rollers are provided, which are rotatably mounted on the two side walls of the V-shaped notch respectively. Each set of rollers includes at least two rollers arranged along the moving direction of the card block.

[0010] Preferably, the driving mechanism includes a turntable, multiple connecting rods, and a driving cylinder. The turntable is rotatably mounted on the positioning plate. The multiple connecting rods are evenly distributed in a ring. One end of each connecting rod is rotatably connected to the turntable, and the other end is rotatably connected to the top plate of a corresponding positioning component. The driving cylinder is fixedly mounted on the positioning plate, and its telescopic end is connected to the top plate of one of the positioning components to drive the top plate to move. It also drives all the locking blocks to move synchronously through the turntable and the remaining connecting rods.

[0011] Preferably, the top plate has multiple insertion holes along its moving direction, and the connecting rod is detachably connected to any of the insertion holes via a pin to adjust the moving range of the locking block.

[0012] Preferably, the positioning disk has multiple grooves extending along its diagonal direction, and the positioning assembly also includes a positioning seat slidably assembled in the groove, a locking block fixed to the bottom of the positioning seat, and a top plate fixed to the top of the positioning seat, the top plate being connected to the drive mechanism.

[0013] Preferably, the lifting platform includes a base, a connecting frame, and a lifting cylinder. The positioning plate is located below the base, the connecting frame is slidably mounted on a column on one side of the base and fixedly connected to the base, and the lifting cylinder is used to drive the connecting frame to move up and down along the column.

[0014] Preferably, the bottom of the platform is fixed with a vertical cylinder, and a rotating shaft is rotatably assembled inside the vertical cylinder. The upper end of the rotating shaft is connected to a drive motor, and the lower end of the rotating shaft is slidably connected to the positioning plate, so that the positioning plate can be raised and lowered relative to the rotating shaft and rotate synchronously with the rotating shaft.

[0015] Preferably, a sleeve is coaxially fixed to the top of the positioning disk, the sleeve is sleeved on the outside of the rotating shaft, the inner wall of the sleeve is provided with a keyway along the axial direction, and a convex key that slides in the keyway is fixed on the rotating shaft.

[0016] Beneficial effects: 1. In use, this invention achieves a composite motion mode of "self-rotation and automatic reciprocating lifting" of the wheel hub through a lifting mechanism. This not only makes the contact between the wheel hub and the abrasive more thorough and intense, accelerating the grinding process, but also, with the cooperation of the limiting component and the rolling roller structure in the clamping block, enables the wheel hub to automatically and smoothly change the clamping position during the grinding process. This completely solves the problem of grinding dead angles caused by obstruction in traditional clamps, ensuring that every part of the wheel hub can be polished evenly and thoroughly, greatly improving the surface quality and yield of the product, achieving comprehensive grinding without dead angles, and significantly improving the grinding quality.

[0017] 2. When using this invention, by connecting the connecting rod's insertion shaft to the insertion holes at different positions on the top plate, the movement range of the locking block can be easily adjusted. The equipment can quickly adapt to grinding hubs of different diameters and specifications without replacing any clamping parts, making it highly versatile and reducing equipment investment and production switching costs.

[0018] 3. When in use, the present invention uses a rotating roller on the clamping block to contact the wheel hub. When switching the clamping position, the sliding friction is changed into rolling friction, which greatly reduces the resistance, ensures the smoothness of the clamping position switching, and avoids scratching the surface of the wheel hub.

[0019] 4. When in use, the elastic element design in the limiting component of this invention allows the limiting shaft to flexibly retract when subjected to excessive compression from the hub spokes. This ensures the effective triggering of the limiting function while preventing damage to the device or hub from hard collisions, thus improving the safety and durability of the system. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention.

[0021] Figure 2 This is a front view of the present invention.

[0022] Figure 3 This is a perspective view of the positioning disk of the present invention.

[0023] Figure 4 This is a top view of the positioning disk of the present invention.

[0024] Figure 5 This is a perspective view of the positioning component of the present invention.

[0025] Figure 6 This is a cross-sectional view of the vertical cylinder and sleeve of the present invention.

[0026] Figure 7 This is a cross-sectional view of the base of the present invention.

[0027] Figure label: 10. Base; 11. Support; 12. Column; 20. Grinding cylinder; 30. Lifting platform; 31. Platform; 311. Vertical cylinder; 312. Rotating shaft; 313. Protruding key; 32. Connecting frame; 33. Lifting cylinder; 40. Positioning plate; 41. Slide groove; 42. Sleeve; 421. Keyway; 50. Positioning assembly; 51. Positioning seat; 52. Locking block; 521. Notch; 522. Roller; 53. Top plate; 531. Insertion hole; 60. Drive mechanism; 61. Turntable; 62. Connecting rod; 621. Insertion shaft; 63. Drive cylinder; 70. Lifting mechanism; 71. Threaded cylinder; 72. Ring sleeve; 73. Support plate; 80. Limiting assembly; 81. Base; 82. Limiting shaft; 83. Elastic element. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0029] like Figures 1 to 7 As shown, the wheel hub production and grinding device of the present invention includes a base 10, a grinding cylinder 20, a lifting platform 30, a positioning plate 40, a positioning component 50, a drive mechanism 60, a lifting mechanism 70, and a limiting component 80. The grinding cylinder 20 is disposed above the base 10 and can polish the wheel hub using abrasive (such as polishing sand) disposed inside it. The positioning plate 40 is located directly above the grinding cylinder 20. The positioning component 50 is disposed on the positioning plate 40 and can hold and position the wheel hub under the drive of the drive mechanism 60. The positioning plate 40 can be raised and lowered under the drive of the lifting platform 30 to allow the wheel hub to enter and exit the grinding cylinder 20, facilitating wheel hub production. The hub can be replaced and installed, and can rotate under the drive of the lifting platform 30 so that the hub can cooperate with the abrasive in the grinding cylinder 20 to complete the grinding. The lifting mechanism 70 is set between the lifting platform 30 and the positioning plate 40, which can drive the rotating positioning plate 40 and the hub to reciprocate up and down in the grinding cylinder 20, improving the contact effect between the abrasive and the hub. The limiting component 80 is located inside the grinding cylinder 20, which can prevent the hub from rotating with the positioning plate 40 after the positioning plate 40 descends to a certain height, thereby changing the part of the hub that is stuck, avoiding the hub from having a grinding dead angle due to being blocked by the positioning component 50, facilitating the overall grinding of the hub and improving the grinding effect.

[0030] refer to Figure 1 and Figure 2 A support 11 is provided on the base 10 for supporting the grinding cylinder 20. A column 12 located on one side of the grinding cylinder 20 is fixedly installed on the base 10 for supporting the lifting platform 30.

[0031] refer to Figure 1 and Figure 2 The lifting platform 30 includes a base 31, a connecting frame 32, and a lifting cylinder 33. The base 31 is located directly above the grinding cylinder 20. The connecting frame 32 is slidably mounted on the column 12 and fixed to the base 31. The lifting cylinder 33 is located on one side of the connecting frame 32 and can drive the connecting frame 32 to slide and lift on the column 12, thereby adjusting the height of the base 31 to facilitate the disassembly and assembly of the wheel hub.

[0032] A vertical cylinder 311 is fixedly installed at the bottom of the base 31. A rotating shaft 312 is rotatably mounted inside the vertical cylinder 311. The top end of the rotating shaft 312 extends into the interior of the base 31 and is equipped with a motor to drive the rotation. The bottom end of the rotating shaft 312 extends to the bottom of the vertical cylinder 311 and is connected to the positioning disk 40. When rotating, it can drive the positioning disk 40 to rotate.

[0033] refer to Figure 1 , Figure 3 as well as Figure 4 The positioning disk 40 is located at the bottom of the base 31 and is generally square. It has multiple annularly distributed grooves 41 inside for mounting the positioning assembly 50. In this application, there are four grooves 41 arranged along the diagonal of the positioning disk 40. A sleeve 42 is coaxially fixed to the top of the positioning disk 40. The sleeve 42 is fitted onto the outside of the rotating shaft 312 and can rotate under the drive of the rotating shaft 312, and can slide and rise relative to the rotating shaft 312. A keyway 421 is formed on the inner wall of the sleeve 42 along its axial direction. A protruding key 313 is fixed on the rotating shaft 312 and slides within the keyway 421. The protruding key 313 causes the rotating shaft 312 to rotate, thereby rotating the sleeve 42 and the positioning disk 40. The sliding of the protruding key 313 within the keyway 421 allows the sleeve 42 to slide axially relative to the rotating shaft 312, enabling the positioning disk 40 to rise and fall relative to the base 31.

[0034] refer to Figure 2 and Figure 5The positioning component 50 includes a positioning seat 51, a locking block 52, and a top plate 53. The positioning seat 51 has multiple corresponding sliding mounts in multiple slide grooves 41. The locking block 52 is located at the bottom of the positioning seat 51. The top plate 53 is located at the top of the positioning disk 40 and is fixed to the positioning seat 51. The top plate 53 can move relative to the positioning disk 40 so that the positioning seat 51 slides along the slide groove 41 and moves the locking block 52 closer to or away from the wheel hub. When the locking block 52 approaches the wheel hub, the locking blocks 52 on the multiple positioning seats 51 cooperate with each other to clamp and position the wheel hub from different positions so that the wheel hub can rotate under the drive of the positioning disk 40.

[0035] refer to Figure 5 The locking block 52 has a V-shaped notch 521 on the side facing the center of the positioning disk 40 for holding the wheel hub. Two sets of support members are set inside the notch 521, which are arranged opposite each other on the two side walls of the notch 521. Each set of support members consists of two symmetrically arranged rollers 522, which are arranged along the moving direction of the locking block 52 and are rotatably mounted on the locking block 52. When the locking block 52 holds the wheel hub, the rollers 522 contact the wheel hub, reducing the frictional resistance on the wheel hub. This allows the wheel hub to rotate among multiple locking blocks 52 after being blocked by external force, thereby changing the holding position of the locking block 52 on the wheel hub. This makes the original holding position fully exposed for grinding, avoiding grinding dead corners on the wheel hub caused by the locking block 52, and enabling the wheel hub to be ground evenly, thus improving the grinding quality.

[0036] refer to Figure 1 , Figure 3 as well as Figure 4 The drive mechanism 60 includes a turntable 61, connecting rods 62, and a drive cylinder 63. The turntable 61 is rotatably mounted on the outside of the sleeve 42. Multiple connecting rods 62 are evenly distributed in rings on the outside of the turntable 61, and one end of each connecting rod 62 is rotatably mounted on the turntable 61. The ends of the multiple connecting rods 62 away from the turntable 61 are rotatably connected to the top plates 53 of multiple positioning seats 51. The drive cylinder 63 is fixedly mounted on the positioning plate 40. The telescopic end of the drive cylinder 63 is fixed to the top plate 53 of one of the positioning seats 51. The telescopic movement of the drive cylinder 63 drives one of the positioning seats 51 to slide along the slide groove 41, causing the connecting rod 62 on the positioning seat 51 to drive the turntable 61 to rotate. Then, the turntable 61 moves synchronously with the remaining multiple positioning seats 51 through the other connecting rods 62, so that the multiple positioning seats 51 with the locking blocks 52 move closer to each other to lock the wheel hub, or move away from each other to release the wheel hub, which facilitates the disassembly and replacement of the wheel hub.

[0037] refer to Figure 3 , Figure 4 as well as Figure 5The top plate 53 has multiple insertion holes 531 along its moving direction. The connecting rod 62 has a shaft 621 inserted inside it, and the connecting rod 62 can rotate relative to the shaft 621. The bottom end of the shaft 621 is detachably connected to the inside of one of the insertion holes 531. The connecting rod 62 and the top plate 53 are connected through the shaft 621 so that the connecting rod 62 can drive the top plate 53 to move. By installing the shaft 621 into different insertion holes 531, the position of the end of the connecting rod 62 on the top plate 53 can be adjusted, thereby adjusting the sliding range of the positioning seat 51 in the slide groove 41 and changing the dispersion and retraction range of the multiple locking blocks 52. That is, the smaller the distance between the insertion hole 531 where the insertion shaft 621 is located and the sleeve 42, the larger the distance between the positioning seat 51 and the sleeve 42, and the larger the maximum dispersion range and minimum contraction range of the multiple clamping blocks 52. Conversely, the larger the distance between the insertion hole 531 where the insertion shaft 621 is located and the sleeve 42, the smaller the distance between the positioning seat 51 and the sleeve 42, and the smaller the maximum dispersion range and minimum contraction range of the multiple clamping blocks 52, so that the equipment can better adapt to the clamping and grinding of wheel hubs of different diameters.

[0038] Specifically, in this solution, the insertion shaft 621 and the insertion hole 531 are preferably connected by a thread. Simply rotate the insertion shaft 621 to screw it into or out of the insertion hole 531 to complete the disassembly and assembly of the top plate 53 and the connecting rod 62, making it convenient and quick to change the position of the connecting rod 62 on the top plate 53.

[0039] refer to Figure 2 , Figure 3 as well as Figure 6 The lifting mechanism 70 includes a threaded cylinder 71, a ring sleeve 72, and a support plate 73. The threaded cylinder 71 is coaxially fixed to the outside of the vertical cylinder 311. The outside of the threaded cylinder 71 is provided with a reciprocating thread, which is composed of two threaded grooves with the same pitch, opposite directions of rotation, and connected at both ends by a transition curve. The ring sleeve 72 is sleeved on the outside of the threaded cylinder 71 and is set on the reciprocating thread. It can move up and down along the reciprocating thread during rotation. The support plate 73 is fixedly installed between the ring sleeve 72 and the sleeve 42. When the sleeve 42 rotates, it can drive the ring sleeve 72 to rotate outside the threaded cylinder 71, so that the ring sleeve 72 moves up and down along the reciprocating thread on the threaded cylinder 71, and drives the sleeve 42 and the positioning plate 40 to move up and down. This allows the hub to automatically move up and down inside the grinding cylinder 20 while rotating, so as to ensure that the hub has better contact with the abrasive and improve the polishing effect of the hub.

[0040] refer to Figure 1 and Figure 7The limiting component 80 includes a base 81, a limiting shaft 82, and an elastic element 83. The base 81 is fixedly installed inside the grinding cylinder 20. The limiting shaft 82 is vertically slidably mounted inside the base 81. When the positioning plate 40 drives the wheel hub to rise and fall, after the wheel hub descends to a certain height, the limiting shaft 82 can insert into the gap between the spokes of the wheel hub to limit and block the rotating wheel hub, preventing the wheel hub from continuing to rotate with the positioning plate 40. The positioning plate 40 and the wheel hub rotate relative to each other, causing the clamping position of the locking block 52 on the wheel hub to change. As the positioning plate 40 is raised, the limiting shaft 82 disengages from the wheel hub, and the wheel hub, no longer limited, continues to rotate with the positioning plate 40, cooperating with the abrasive for polishing. The change in the clamping position of the wheel hub means that the wheel hub was originally clamped by the locking block 52. 2. The shielded parts are better exposed, and then come into contact with the abrasive to complete the polishing and grinding, improving the overall polishing of the wheel hub. The elastic element 83 is set between the limiting shaft 82 and the base 81, specifically a spring, to provide elastic support for the limiting shaft 82. When the wheel hub is descending, after the wheel hub spokes are blocked by the limiting shaft 82, the limiting shaft 82 will be pressed to slide within the base 81 and compress the elastic element 83, avoiding interference from the limiting shaft 82 to the descent of the wheel hub. As the wheel hub spokes rotate and move away from the top of the limiting shaft 82, the elastic element 83, which is no longer blocked, pushes the limiting shaft 82 to rise and reset, so that it can be inserted into the gap of the wheel hub spokes. This restricts the wheel hub from following the rotation of the positioning plate 40, so as to change the holding position of the clamping block 52 on the wheel hub and realize the overall polishing of the wheel hub.

[0041] Working principle: The lifting cylinder 33 drives the connecting frame 32 and the platform 31 to rise along the column 12, so that the positioning plate 40 is in a high position. The operator places the wheel hub to be ground between multiple clamping blocks 52, and the driving cylinder 63 extends to push a positioning seat 51 directly connected to it to move towards the center along the slide groove 41. The positioning seat 51 drives the turntable 61 to rotate through the connecting rod 62. The turntable 61 then drives the other three positioning seats 51 to move towards the center synchronously through the other connecting rods 62. Finally, the V-shaped notches 521 on the four clamping blocks 52 clamp the edge of the wheel hub from different directions.

[0042] The lifting cylinder 33 drives the platform 31 to descend, completely immersing the clamped hub in the abrasive within the grinding cylinder 20. The motor within the platform 31 drives the rotating shaft 312 to rotate. The rotating shaft 312, through the engagement of the key 313 and the keyway 421, drives the sleeve 42 and the entire positioning disk 40 to rotate, thus causing the hub to rotate and be ground in the abrasive. The support plate 73, fixed to the sleeve 42, drives the ring 72 to rotate synchronously. The inside of the ring 72 engages with the reciprocating threads on the outside of the threaded cylinder 71. Since the threaded cylinder 71 is fixed, the ring 72, during rotation, performs periodic up-and-down reciprocating motion along the reciprocating threads. This motion is transmitted to the positioning disk 40 and the hub through the support plate 73 and the sleeve 42, causing the hub to automatically move up and down within the grinding cylinder 20 while rotating, increasing the relative speed and complexity of the movement between the abrasive and the hub surface, thereby improving grinding efficiency and uniformity.

[0043] As the wheel hub automatically descends with the positioning disc 40, when it reaches a preset height, the top of the limiting shaft 82 in the limiting component 80 at the bottom of the grinding cylinder 20 engages with the spoke gaps of the wheel hub. The limiting shaft 82 prevents the wheel hub from continuing to rotate with the positioning disc 40, but the positioning disc 40 continues to rotate under the drive of the motor. At this time, a relative rotation occurs between the wheel hub held by the clamping block 52 and the rotating positioning disc 40. When the wheel hub is limited while the positioning disc 40 continues to rotate, the edge of the wheel hub drives the roller 522 to roll. This greatly reduces the frictional resistance between the wheel hub and the clamping block 52, causing the wheel hub to rotate relative to the clamping blocks 52, thereby changing the clamping position of the clamping blocks 52 on the edge of the wheel hub.

[0044] After the positioning plate 40 completes its descent and rises again, the limiting shaft 82 disengages from the hub, releasing its restraint, and the hub is once again rotated by the positioning plate 40. At this point, the clamping block 52 is now held in a new position on the edge of the hub, and the previously obscured part is fully exposed, allowing for full contact with the abrasive.

[0045] After repeated lifting and lowering, the entire circumference of the wheel hub underwent a process of being "clamped" and "exposed," achieving comprehensive polishing. Finally, the lifting cylinder 33 raises the positioning plate 40, driving the cylinder 63 to reverse its movement, releasing the locking block 52, and allowing the polished wheel hub to be removed.

[0046] In this invention, the lifting mechanism 70 achieves a composite motion mode of "rotation and automatic reciprocating lifting" for the wheel hub. This not only ensures more thorough and intense contact between the wheel hub and the abrasive, accelerating the grinding process, but also achieves this entirely automatically through a mechanical structure (reciprocating thread), requiring no additional electrical control. This ensures stability and reliability. Furthermore, with the cooperation of the limiting component 80 and the rolling roller 522 in the clamping block 52, the wheel hub automatically and smoothly changes its clamping position during grinding. This completely solves the problem of grinding dead angles caused by obstruction in traditional clamps, ensuring that every part of the wheel hub (especially its edges) receives uniform and thorough polishing. This greatly improves the surface quality and yield of the product, achieving comprehensive grinding without dead angles and significantly enhancing grinding quality. By connecting the insertion shaft 621 of the connecting rod 62 to the top... The insertion holes 531 at different positions on plate 53 allow for easy adjustment of the movement range of the clamping block 52. The equipment can quickly adapt to grinding hubs of different diameters and specifications without replacing any clamping parts, making it highly versatile and reducing equipment investment and production switching costs. The roller 522 on the clamping block 52, which is rotated and assembled, contacts the hub. When switching clamping positions, sliding friction is changed to rolling friction, which greatly reduces resistance and ensures smooth switching of clamping positions, while avoiding scratching the surface of the hub. The elastic element 83 (spring) design in the limiting component 80 allows the limiting shaft 82 to flexibly retract when subjected to excessive pressure from the hub spokes. This ensures effective triggering of the limiting function and prevents damage to the device or hub caused by hard collisions, improving the safety and durability of the system.

[0047] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A wheel hub production and grinding device, comprising a base (10), characterized in that, Also includes: A grinding cylinder (20) is set on a base (10) and contains abrasive material. The lifting platform (30) is located on one side of the base (10) and is capable of lifting. The positioning plate (40) is located above the grinding cylinder (20) and connected to the lifting platform (30), and can be lifted and rotated under the drive of the lifting platform (30); The positioning component (50) is set on the positioning disk (40) and includes multiple locking blocks (52) that can move closer or further apart from each other for locking and positioning the wheel hub. Rollers (522) for contacting the wheel hub are rotatably mounted on the locking blocks (52). A drive mechanism (60) is provided on the positioning disk (40) for driving multiple blocks (52) of the positioning component (50) to move synchronously; The lifting mechanism (70) is connected between the lifting platform (30) and the positioning plate (40), and can drive the positioning plate (40) to move back and forth relative to the lifting platform (30) when the positioning plate (40) rotates; The limiting component (80) is located inside the grinding cylinder (20) and includes a limiting shaft (82) that can be elastically extended and retracted. When the positioning plate (40) drives the hub to descend to a predetermined height, the limiting shaft (82) can be inserted into the spoke gap of the hub to prevent the hub from continuing to rotate with the positioning plate (40), so that the hub and the positioning plate (40) rotate relative to each other, thereby changing the holding position of the locking block (52) on the hub.

2. The wheel hub production and grinding device according to claim 1, characterized in that, The lifting mechanism (70) includes a threaded cylinder (71), a ring sleeve (72), and a support plate (73). The threaded cylinder (71) is coaxially fixedly installed at the lower part of the lifting platform (30), and its outer wall is provided with a reciprocating thread. The ring sleeve (72) is sleeved on the outside of the threaded cylinder (71) and cooperates with the reciprocating thread, so that it can reciprocate up and down along the threaded cylinder (71) when rotating. The support plate (73) is fixedly connected between the ring sleeve (72) and the positioning plate (40) and is used to drive the ring sleeve (72) to rotate synchronously when the positioning plate (40) rotates.

3. The wheel hub production and grinding device according to claim 1, characterized in that, The limiting component (80) also includes a base (81) and an elastic element (83). The base (81) is fixedly installed inside the grinding cylinder (20). The elastic element (83) is disposed between the limiting shaft (82) and the base (81) to provide elastic support force to the limiting shaft (82), so that the limiting shaft (82) can retract when obstructed and reset after the obstruction is released.

4. The wheel hub production and grinding device according to claim 1, characterized in that, The card block (52) has a V-shaped notch (521) on one side near the center of the positioning disk (40). There are two sets of rollers (522), which are rotatably mounted on the two side walls of the V-shaped notch (521). Each set of rollers (522) includes at least two rollers (522) arranged along the moving direction of the card block (52).

5. The wheel hub production and grinding device according to claim 1, characterized in that, The drive mechanism (60) includes a turntable (61), multiple connecting rods (62) and a drive cylinder (63). The turntable (61) is rotatably mounted on the positioning plate (40). The multiple connecting rods (62) are evenly distributed in a ring. One end of each connecting rod (62) is rotatably connected to the turntable (61), and the other end is rotatably connected to the top plate (53) of a corresponding positioning component (50). The drive cylinder (63) is fixedly mounted on the positioning plate (40), and its telescopic end is connected to the top plate (53) of one of the positioning components (50) to drive the top plate (53) to move. It also drives all the locking blocks (52) to move synchronously through the turntable (61) and the remaining connecting rods (62).

6. The wheel hub production and grinding device according to claim 5, characterized in that, The top plate (53) has multiple insertion holes (531) along its moving direction. The connecting rod (62) is detachably connected to any insertion hole (531) through the insertion shaft (621) to adjust the moving range of the locking block (52).

7. The wheel hub production and grinding device according to claim 5, characterized in that, The positioning disk (40) has multiple grooves (41) extending along its diagonal direction. The positioning assembly (50) also includes a positioning seat (51) slidably assembled in the groove (41), a locking block (52) fixed to the bottom of the positioning seat (51), and a top plate (53) fixed to the top of the positioning seat (51). The top plate (53) is connected to the drive mechanism (60).

8. The wheel hub production and grinding device according to claim 1, characterized in that, The lifting platform (30) includes a base (31), a connecting frame (32), and a lifting cylinder (33). The positioning plate (40) is located below the base (31). The connecting frame (32) is slidably mounted on the column (12) on one side of the base (10) and is fixedly connected to the base (31). The lifting cylinder (33) is used to drive the connecting frame (32) to move up and down along the column (12).

9. The wheel hub production and grinding apparatus according to claim 8, characterized in that, The bottom of the pedestal (31) is fixed with a vertical cylinder (311), and a rotating shaft (312) is rotatably assembled inside the vertical cylinder (311). The upper end of the rotating shaft (312) is connected to a drive motor, and the lower end of the rotating shaft (312) is slidably connected to the positioning disk (40), so that the positioning disk (40) can rise and fall relative to the rotating shaft (312) and rotate synchronously with the rotating shaft (312).

10. The wheel hub production and grinding apparatus according to claim 9, characterized in that, A sleeve (42) is coaxially fixed to the top of the positioning disk (40). The sleeve (42) is sleeved on the outside of the rotating shaft (312). A keyway (421) is provided on the inner wall of the sleeve (42) along the axial direction. A convex key (313) is fixed on the rotating shaft (312) and slides in the keyway (421).

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