Automatic hub grinding machine

Abstract

The invention relates to the technical field of polishing, in particular to an automatic hub polishing machine which comprises a machine table, a mechanical arm is installed on the table top of the machine table, a connecting frame is connected to the end of the mechanical arm, a bottom frame is connected to the lower portion of the connecting frame through a stand column, a pneumatic motor is installed on the bottom frame, and a transmission shaft of the pneumatic motor is connected with a driving shaft. The free end of the driving shaft faces downwards and is connected with a clamp, a center grinding head is clamped at the clamping end of the clamp, and a side grinding assembly, an unfolding assembly and a sliding assembly are arranged on the bottom frame. Through the arrangement of the side grinding assembly, when a large round hole or the side wall of a spoke is ground, a center grinding head can be replaced by a plurality of surrounding grinding heads, and the hole in a hub and the two side walls of the spoke can be ground only by achieving the autorotation and sliding functions of the mechanical arm; and the center grinding head is used for grinding the end part of the spoke and the small hole, so that the complete grinding of the hub can be completed.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding, and in particular to an automatic hub grinding and processing machine. Background Art

[0002] As one of the core load-bearing components of an automobile, the hub not only supports the connection between the tire and the vehicle body, but its structural accuracy and surface quality directly affect the driving stability, safety and appearance quality of the vehicle. Modern hubs are mostly made of lightweight materials such as aluminum alloy. During the casting, forging or machining process, burrs, oxide layers or dimensional deviations are likely to remain on the surface, and the side walls of complex structures such as spokes and axle holes also need to be precisely ground to meet the assembly requirements.

[0003] In the prior art, a method of connecting a grinding mechanism to the end of a manipulator is widely used. The manipulator drives a rotating grinding head to move along the holes on the hub and the spoke side walls of the hub to grind the hub. In order to grind relatively small holes and corners, the size rotation of the grinding head is not too large. However, there are many holes on the hub and the side walls of the spokes are long. The manipulator needs to search for the hole walls and spoke side walls on the hub, resulting in a long grinding time and low grinding efficiency. Moreover, when changing hubs of different models, the manipulator needs to search and reprogram again, resulting in a reduction in the overall grinding and processing efficiency of the hub.

[0004] Therefore, an automatic hub grinding and processing machine is proposed. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides an automatic hub grinding and processing machine.

[0006] To solve the above technical problems, the present invention provides the following technical solution: an automatic hub grinding and processing machine, including a machine table. A turntable is rotatably installed on the tabletop of the machine table. Cylinder clamping mechanisms are installed at both ends of the turntable. The tabletop of the machine table is connected with a bracket on one side of the turntable. A manipulator is installed at the top of the bracket. A connecting frame is connected to the end of the manipulator. A bottom frame is connected to the lower part of the connecting frame through a column. A pneumatic motor is installed on the bottom frame. The transmission shaft of the pneumatic motor is connected with a driving shaft. The free end of the driving shaft extends downward and is connected with a fixture. A central grinding head is clamped at the clamping end of the fixture. A cleaning cover is connected to the outer shell at the end of the manipulator. An access pipe for connecting to a dust removal fan device is connected to one side of the cleaning cover.

[0007] As a preferred technical solution of the present invention, an outward-expandable side grinding assembly is provided on the chassis. The side grinding assembly includes a connecting shaft, the connecting shaft is connected to the bottom surface of the connecting frame, the free end of the connecting frame is connected with a fixed disk, at least five rotating holes are annularly formed on the fixed disk, at least five side grinding circuit bins are annularly arranged on the rotating holes, an annular protrusion is provided on the bottom surface of one end of the side grinding circuit bin and is rotatably connected to the corresponding rotating hole through a rotating bearing, a side grinding frame is connected to the end of the bottom surface of the side grinding circuit bin away from the rotating hole, a clamp is arranged on the bottom surface of the side grinding frame, a surrounding grinding head is clamped at the clamping end of the clamp, the surrounding grinding head is located above the central grinding head, a side grinding motor is installed on the side grinding circuit bin, and a transmission shaft of the side grinding motor is in transmission connection with the corresponding clamp.

[0008] As a preferred technical solution of the present invention, an unfolding assembly for driving the side grinding circuit bin to rotate to expand the surrounding grinding head outward is provided on the chassis. The unfolding assembly includes a lifting cylinder, the lifting cylinder is installed on one side of the chassis, a positioning plate is connected to the transmission shaft of the lifting cylinder, sleeve plates are arranged on both sides of the bottom surface of the positioning plate, holes are formed on the top surface of the sleeve plates and are rotatably connected with rotating rods through rotating bearings, a driving gear is connected to one end of the rotating rod located inside the sleeve plate, the top end of the rotating rod is rotatably connected to the positioning plate through a rotating bearing, a motor is installed on the positioning plate for driving one of the rotating rods to rotate, openings are formed on the corresponding surfaces of the two sleeve plates and a driven gear ring is sleeved therein, the driven gear ring is meshed with the driving gear, a fixing plate is connected to the bottom surface of the driven gear ring, a sleeve is connected to the bottom end of the fixing plate, a central hole is formed in the sleeve and the driving shaft is located therein, an expanding gear ring is connected to the outer wall of the sleeve, a U-shaped tooth plate is connected to one end of the side grinding circuit bin close to the expanding gear ring, and the U-shaped tooth plate is meshed with the expanding gear ring, a selection gear ring is connected to the outer wall of the sleeve above the expanding gear ring, teeth are arranged on both sides of the selection gear ring, and an avoidance hole for the expanding gear ring to pass through is formed in the center of the fixed disk.

[0009] As a preferred technical solution of the present invention, a sliding component is provided on the side grinding circuit bin, and the sliding component is used to adjust the distance between the surrounding grinding head and the end of the side grinding circuit bin, and to generate pressure for resisting the wheel hub on the distance between the surrounding grinding head and the end of the side grinding circuit bin, the sliding component includes a guide rail, a sliding hole is opened on the bottom surface of the side grinding frame, and the bottom surface of the side grinding frame is connected to the guide rail on both sides of the sliding hole, a slide plate is slidably connected to the guide rail, a bevel gear 1 is connected to the top surface of the clamp at the corresponding position, and the bevel gear 1 is rotatably connected to the rotating hole through a rotating bearing, a hole is opened on the side wall of the side grinding frame and is connected to a straight shaft through a rotating bearing, a slide plate is connected to one side of the slide plate, a hole is opened on the side surface of the slide plate and a bevel gear 2 is rotatably installed, and the bevel gear 1 is connected to the bevel gear The two are meshed, a straight shaft passes through bevel gear two, the free end of the straight shaft is connected with bevel gear three, the transmission shaft of the side grinding motor is connected with bevel gear four, bevel gear three is meshed with bevel gear four, a straight shaft is provided with a return spring between the slide and the side wall of the side grinding frame, the two ends of the return spring respectively abut against the slide and the side grinding frame, a position sensor is installed on the bottom surface of the slide, a magnetic induction block is connected to the side of the slide, an electromagnet is installed on the side grinding frame, a protective cover is connected to the side grinding frame, the protective cover sets the first structure cover of the bevel gear inside for protection, a cover plate is connected to the side grinding circuit compartment, a simple control circuit board for controlling the side grinding motor, the position sensor and the electromagnet is arranged in the side grinding circuit compartment, and the circuit connection port of the circuit board is arranged on the cover plate.

[0010] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0011] 1. Through the setting of the side grinding assembly, when grinding large circular holes or the side walls of the spokes, a number of surrounding grinding heads can be used to replace the central grinding head. The robot only needs to realize the self-rotation and sliding functions to grind the holes on the hub and the side walls of the spokes. The central grinding head can then assist in grinding the ends of the spokes and small holes to complete the complete grinding of the hub, thereby avoiding the problem of reduced efficiency caused by the robot's need to search for holes and spokes. In addition, during the programming stage, the robot's need to search for large holes and spoke walls is also reduced, thereby further improving the overall grinding efficiency.

[0012] 2. Through the outward expandable surrounding grinding head and unfolding assembly, combined with the pressure adaptive function of the sliding assembly, the grinding head spacing and contact pressure can be dynamically adjusted to adapt to hub holes of different diameters and complex spoke structures, thereby enhancing the versatility of the equipment.

[0013] 3. The position sensor, electromagnet and reset spring linkage design are adopted to detect the grinding head position in real time and automatically adjust the pressure to avoid idling of the unused grinding head, reduce the equipment failure rate, and ensure the stable and reliable grinding process.

[0014] 4. With the setting of the cleaning cover, the grinding mechanism can be covered inside the cleaning cover, and the dust removal fan device introduces wind force into the cleaning cover to clean the grinding mechanism, preventing debris from adhering to the grinding mechanism and affecting the subsequent use stability. The structures such as the side grinding circuit bin that folds towards the center by rotation can reduce the space occupied by the grinding mechanism, thereby reducing the collision risk of manual operations such as maintenance. At the same time, the cleaning cover covering the grinding mechanism can also reduce its size, so as to better guide the cleaning air flow, improve the cleaning effect, and avoid excessive loss of the utility of the air flow due to the too large size of the cover body. Brief Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 It is a schematic diagram of the structure of the grinding mechanism of the present invention;

[0017] Figure 3 It is a schematic diagram of a partial structure of the grinding mechanism of the present invention;

[0018] Figure 4 It is a schematic diagram of the structure of the position adjustment plate of the present invention;

[0019] Figure 5 It is a schematic diagram of the structure of the sliding component of the present invention;

[0020] Figure 6 It is a schematic diagram of the bottom structure of the sliding component of the present invention;

[0021] Figure 7 It is a schematic diagram of the structure of the cleaning cover of the present invention;

[0022] Wherein: 10, machine table; 11, turntable; 12, bracket; 13, manipulator; 14, grinding mechanism; 15, connecting frame; 16, chassis; 17, pneumatic motor; 18, driving shaft; 19, fixture; 20, center grinding head; 21, connecting shaft; 22, fixed disk; 23, rotating hole; 24, side grinding circuit bin; 25, side grinding frame; 26, surrounding grinding head; 27, side grinding motor; 28, lifting cylinder; 29, position adjustment plate; 30, sleeve plate; 31, driving gear; 32, rotating rod; 33, driven tooth ring; 34, fixing plate; 35, sleeve; 36, expanding tooth ring; 37, U-shaped tooth plate; 38, bevel gear one; 39, bevel gear two; 40, bevel gear three; 41, bevel gear four; 42, guide rail; 43, sliding plate; 44, one-way shaft; 45, sliding frame; 46, return spring; 47, position sensor; 48, magnetic sensing block; 49, electromagnet; 50, protective cover; 51, selection tooth ring; 52, cleaning cover; 53, access pipe. Detailed Description of the Invention

[0023] In order to make the technical means, creative features, achieved purposes and effects realized by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments. However, the following embodiments are only the preferred embodiments of the present invention, not all of them. Based on the embodiments in the implementation manners, other embodiments obtained by those skilled in the art without creative efforts all fall within the protection scope of the present invention. The experimental methods in the following embodiments are all conventional methods unless otherwise specified. The materials, reagents, etc. used in the following embodiments can be obtained from commercial channels unless otherwise specified.

[0024] Embodiment: As Figure 1 shown, an automatic hub grinding machine includes a machine table 10. A turntable 11 is rotatably installed on the tabletop of the machine table 10. A divider is installed in the machine table 10 to drive the turntable 11 to rotate at a fixed angle. Cylinder clamping mechanisms are installed at both ends of the turntable 11. It should be noted that the cylinder clamping mechanism is a known technology in the art. The clamp is driven by a cylinder to clamp the hub from the side direction, thereby completing the fixation of the hub and making the hub rotate together when the turntable rotates. A bracket 12 is connected to the tabletop of the machine table 10 on one side of the turntable 11. A manipulator 13 is installed at the top of the bracket 12. It should be noted that the manipulator 13 is a known technology in the art and will not be elaborated here. A grinding mechanism 14 is provided at the end of the manipulator 13.

[0025] Specifically, after the hub is placed on the turntable 11, the pneumatic clamping mechanism is activated to clamp the hub. Then, the manipulator 13 drives the grinding mechanism 14 to approach the position of the hub that needs to be ground. The grinding mechanism 14 is then activated to grind the hub. Through circuits, PLC and programming, the operation logic of the manipulator 13 is edited, thereby realizing the automatic grinding process of the manipulator 13.

[0026] As Figure 1 and Figure 2 shown, the grinding mechanism 14 includes a connecting frame 15. The connecting frame 15 is connected to the end of the manipulator 13. A base frame 16 is connected below the connecting frame 15 through a column. A pneumatic motor 17 is installed on the base frame 16. The transmission shaft of the pneumatic motor 17 is connected to a driving shaft 18. The free end of the driving shaft 18 extends downward and is connected to a clamp 19. A center grinding head 20 is clamped at the clamping end of the clamp 19.

[0027] Specifically, the pneumatic motor 17 is connected to an air pipe, and a solenoid valve is set to control the air supply. When the pneumatic motor 17 is supplied with air, it drives the driving shaft 18 to rotate, and then drives the center grinding head 20 to rotate. The rotating center grinding head 20 grinds positions such as the shaft hole, ring wall and surface of the hub. It should be noted that a rod-shaped grinding head is used in this embodiment. In other embodiments, other types of grinding heads can also be used to grind different positions of the hub. In addition, the pneumatic motor 17, the clamp 19 and the center grinding head 20 are all known technologies in the art and will not be elaborated here.

[0028] As Figure 2 and Figure 3 shown, a side grinding assembly capable of expanding outwards for grinding is provided on the grinding mechanism 14. The side grinding assembly includes a connecting shaft 21. The connecting shaft 21 is connected to the bottom surface of the connecting frame 15. The free end of the connecting frame 15 is connected with a fixed disk 22. At least five rotating holes 23 are annularly formed on the fixed disk 22. At least five side grinding circuit bins 24 are annularly arranged on the rotating holes 23. One end of the bottom surface of the side grinding circuit bin 24 is provided with an annular protrusion and is rotatably connected to the corresponding rotating hole 23 through a rotating bearing. The bottom surface of the side grinding circuit bin 24, at the end far from the rotating hole 23, is connected with a side grinding frame 25. The side grinding frame 25 is L-shaped. A clamp 19 is also provided on the bottom surface of the side grinding frame 25. The clamping end of the clamp 19 clamps a surrounding grinding head 26. The surrounding grinding head 26 is located above the central grinding head 20. A side grinding motor 27 is installed on the side grinding circuit bin 24. The transmission shaft of the side grinding motor 27 is in transmission connection with the corresponding clamp 19.

[0029] Specifically, when grinding a relatively large round hole (such as a central hole) on the hub, the manipulator 13 drives the connecting frame 15 to move further downwards, so that the surrounding grinding head 26 enters the central hole. The surrounding grinding head 26 abuts against the side wall of the round hole. The side grinding motor 27 is started to drive the surrounding grinding head 26 to rotate. Multiple surrounding grinding heads 26 rotate simultaneously to grind the side wall of the round hole. During the grinding process, the manipulator 13 drives the connecting frame 15 to rotate by a certain angle, so that the surrounding grinding head 26 slides along the side wall of the round hole, thereby completely grinding the relatively large round hole on the hub.

[0030] As Figure 3 and Figure 4 shown, a deployment assembly for driving the side grinding circuit bin 24 to rotate to expand the surrounding grinding head 26 outwards is provided on the grinding mechanism 14. The deployment assembly includes a lifting cylinder 28. The lifting cylinder 28 is installed on one side of the bottom frame 16. The transmission shaft of the lifting cylinder 28 is connected with an adjustment plate 29. A plug rod is connected to the top surface of the adjustment plate 29. The plug rod is slidably connected to the bottom frame 16 through a sliding bearing. Sleeve plates 30 are provided on both sides of the bottom surface of the adjustment plate 29. A hole is formed on the top surface of the sleeve plate 30 and a rotating rod 32 is connected through a rotating bearing. One end of the rotating rod 32 located inside the sleeve plate 30 is connected with a driving gear 31. The top end of the rotating rod 32 is rotatably connected to the adjustment plate 29 through a rotating bearing. A motor is installed on the adjustment plate 29 for driving one rotating rod 32 to rotate. The corresponding surfaces of the two sleeve plates 30 are open and a driven gear ring 33 is sleeved therein. The driven gear ring 33 meshes with the driving gear 31. The bottom surface of the driven gear ring 33 is connected with a fixing plate 34. The bottom end of the fixing plate 34 is connected with a sleeve 35. A central hole is formed in the sleeve 35 and the driving shaft 18 is located therein. An expansion gear ring 36 is connected to the outer wall of the sleeve 35. One end of the side grinding circuit bin 24 close to the expansion gear ring 36 is connected with a U-shaped tooth plate 37, and the U-shaped tooth plate 37 meshes with the expansion gear ring 36.

[0031] Specifically, the motor starts to drive the driving gear 31 to rotate, and the driven gear ring 33 meshing with the driving gear 31 rotates in the sleeve plate 30, and drives the sleeve 35 to rotate through the fixed plate 34. The expansion gear ring 36 rotates with the sleeve 35 to drive the U-shaped gear plate 37 meshing with it to rotate, so that the side grinding circuit bin 24 rotates with the rotating hole 23 as the axis. The surrounding grinding head 26 changes its position to expand outward or contract inward according to the different rotation directions of the side grinding circuit bin 24. When grinding a larger circular hole on the wheel hub, the surrounding grinding head 26 can first be contracted toward the center. The grinding head 20 is closed to shorten the overall circumference to facilitate insertion into the circular hole. Then, after insertion into the circular hole, the side grinding circuit compartment 24 is selected outward so that the surrounding grinding head 26 expands until it contacts the side wall of the circular hole, thereby being able to automatically adapt to the grinding of hub holes of different sizes. It should be noted that the size of the surrounding grinding head 26 relative to the center grinding head 20 is limited by the size of the expansion gear ring 36. The sizes provided in the drawings in this embodiment are for reference only. By selecting expansion gear rings 36 of different sizes, the annular circumference of the five surrounding grinding heads 26 can be increased or reduced, and this application does not limit this.

[0032] like Figure 3 As shown, the outer wall of the sleeve 35 is connected to a selection toothed ring 51 above the expansion toothed ring 36 , gear teeth are arranged on both sides of the selection toothed ring 51 , and an avoidance hole for the expansion toothed ring 36 to pass through is opened in the center of the fixed disk 22 .

[0033] Specifically, the extension of the transmission shaft of the lifting cylinder 28 will push the sleeve 35 down, allowing the expansion gear ring 36 to stagger the U-shaped gear plate 37 and allowing the selection gear ring 51 to correspond to the U-shaped gear plate 37, and then drive the sleeve 35 to rotate. The gear teeth on both sides of the selection gear ring 51 will drive the side grinding circuit bins 24 on both sides to rotate through meshing, and then only the surrounding grinding heads 26 on both sides will expand, and then hit the side walls of the spokes on the hub from both sides, and then the manipulator 13 controls the grinding mechanism 14 to slide along the side walls of the spokes, and then grinds the side walls of the spokes on the hub at the same time, while the surrounding grinding heads 26 at other positions remain in a contracted state to avoid expansion, thereby not causing a large restriction on the sliding amplitude of the grinding mechanism 14.

[0034] like Figure 5 and Figure 6As shown, a sliding assembly for adjusting the distance between the surrounding grinding head 26 and the end of the side grinding circuit bin 24 is provided on the side grinding circuit bin 24. The sliding assembly includes a guide rail 42. A sliding hole is formed in the bottom surface of the side grinding frame 25, and guide rails 42 are connected to both sides of the sliding hole on the bottom surface of the side grinding frame 25. A sliding plate 43 is slidably connected to the guide rail 42. The top surface of the fixture 19 at the corresponding position is connected with a first bevel gear 38. The first bevel gear 38 is rotatably connected to the rotating hole 23 through a rotating bearing. A hole is formed in the side wall of the side grinding frame 25 and is rotatably connected with a cross shaft 44 through a rotating bearing. The cross section of the cross shaft 44 is in the shape of a cross. A sliding frame 45 is connected to one side surface of the sliding plate 43. A hole is formed in the side surface of the sliding frame 45 and a second bevel gear 39 is rotatably installed. The first bevel gear 38 meshes with the second bevel gear 39. The cross shaft 44 passes through the second bevel gear 39. A third bevel gear 40 is connected to the free end of the cross shaft 44. The transmission shaft of the side grinding motor 27 is connected with a fourth bevel gear 41. The third bevel gear 40 meshes with the fourth bevel gear 41. A return spring 46 is sleeved between the sliding frame 45 and the side wall of the side grinding frame 25 on the cross shaft 44. The two ends of the return spring 46 respectively abut against the sliding frame 45 and the side grinding frame 25. A position sensor 47 is installed on the bottom surface of the sliding plate 43. The position sensor 47 adopts an optoelectronic sensor. A magnetic sensing block 48 is connected to the side surface of the sliding frame 45. The magnetic sensing block 48 is made of a magnetic sensing material, such as iron. An electromagnet 49 is installed on the side grinding frame 25. The electromagnet 49 is a known technology in the art and will not be elaborated here. Moreover, the first bevel gear 38, the second bevel gear 39, the third bevel gear 40 and the fourth bevel gear 41 are all known technologies in the art and can change the rotation angle by 90 degrees and will not be elaborated here. A protective cover 50 is connected to the side grinding frame 25. The protective cover 50 covers the structures such as the first bevel gear 38 inside for protection. A cover plate is connected to the side grinding circuit bin 24. A simple control circuit board for controlling the side grinding motor 27, the position sensor 47 and the electromagnet 49 is arranged in the side grinding circuit bin 24. And the circuit connection ports of the circuit board are arranged on the cover plate, modularizing the control of structures such as the side grinding motor 27, which is convenient for maintenance, replacement and reduces the complexity of the control system.

[0035] Specifically, in the normal state, the surrounding grinding head 26 is supported by the return spring 46 and is located at one end of the side grinding circuit bin 24 close to the center grinding head 20. The overall circumference of the five surrounding grinding heads 26 is the smallest. When the electromagnet 49 is activated, the magnetic sensing block 48 is attracted by the magnetic force of the electromagnet 49, pulling the slide plate 43 to slide on the guide rail 42, and then pulling the surrounding grinding head 26 to the other end of the side grinding circuit bin 24. The overall circumference of the five surrounding grinding heads 26 is the largest, and the unfolding range is also correspondingly increased. In the initial stage of grinding, bringing the surrounding grinding head 26 close to the center grinding head 20 can facilitate insertion into the holes on the hub. After the side grinding circuit bin 24 rotates, the electromagnet 49 is energized to make the surrounding grinding head 26 slide, so that the surrounding grinding head 26 can contact and apply pressure to the side wall of the hub, thus automatically adapting to holes of different sizes, especially the side walls of the wheel spokes with a larger width. And the non-rigid pulling force can make the surrounding grinding head 26 slide and adjust adaptively on the side grinding frame 25 according to the change of the hole shape during the grinding process. Then the side grinding motor 27 is started to drive the fourth bevel gear 41 to rotate. The fourth bevel gear 41 drives the one-way shaft 44 to rotate through meshing with the third bevel gear 40. The one-way shaft 44 drives the second bevel gear 39 to rotate. The second bevel gear 39 drives the surrounding grinding head 26 to achieve the grinding function through meshing with the first bevel gear 38. When grinding the wheel spokes of the hub, when the surrounding grinding heads 26 on both sides contact the side walls of the wheel spokes, the position sensor 47 detects the wheel spokes and opens the path between the circuit board and the side grinding motor 27, enabling the side grinding motor 27 to start and drive the surrounding grinding head 26 to rotate, while the surrounding grinding heads 26 in other positions remain stationary. Through the setting of the bevel gear set, while keeping the sliding surrounding grinding head 26 in transmission connection with the side grinding motor 27, the side grinding motor 27 can be fixed in place, improving the stability of the use of the side grinding motor 27 and related circuits.

[0036] It should be noted that a dust removal fan device is provided on the machine table 10 to remove waste materials. The dust removal fan device is a well-known prior art and will not be elaborated here.

[0037] As Figure 7 shown, a cleaning cover 52 is connected to the outer shell at the end of the manipulator 13, and an access pipe 53 for connecting to the dust removal fan device is connected to one side of the cleaning cover 52.

[0038] Specifically, during the process of waiting for loading and unloading after the hub is polished, the manipulator 13 drives the polishing mechanism 14 to rise upward to create space for loading and unloading. At this time, the polishing mechanism 14 is covered by the cleaning cover 52, and the dust removal fan device is started to introduce wind force into the cleaning cover 52 to clean the polishing mechanism 14, preventing debris and the like from adhering to the polishing mechanism 14 and affecting the subsequent use stability. The structures such as the side grinding circuit bin 24 that fold inwards by rotation can reduce the space occupied by the polishing mechanism 14, thereby reducing the collision risk of manual operations such as maintenance. At the same time, the cleaning cover 52 covering the polishing mechanism 14 can also reduce its size, thus better guiding the cleaning air flow, improving the cleaning effect, and preventing excessive loss of the utility of the air flow due to the too large size of the cover body.

[0039] Working principle:

[0040] Before use: Place the hub on the turntable 11, start the pneumatic clamping mechanism to clamp the hub, and then the manipulator 13 drives the polishing mechanism 14 close to the position of the hub that needs to be polished. When the pneumatic motor 17 is ventilated, it drives the main shaft 18 to rotate, and then drives the central grinding head 20 to rotate. The rotating central grinding head 20 can polish the shaft hole of the hub and so on.

[0041] During use: First step, when polishing the larger round holes on the hub, the manipulator 13 drives the connecting frame 15 further downward to let the surrounding grinding head 26 enter the central hole. The expansion assembly is started to expand the surrounding grinding head 26. The electromagnet 49 generates a pulling force to make the surrounding grinding head 26 tightly contact the side wall of the round hole. The side grinding motor 27 drives the surrounding grinding head 26 to rotate through the bevel gear set and the one-way shaft 44 for polishing.

[0042] Second step, when polishing the side wall of the spoke of the hub, first polish the end through the central grinding head 20, and then the selected teeth on both sides of the toothed ring 51 drive the side grinding circuit bins 24 on both sides to rotate through meshing, expand the surrounding grinding heads 26 on both sides. The electromagnet 49 generates a pulling force to make the surrounding grinding heads 26 contact the side wall of the spoke on the hub from both sides. The manipulator 13 controls the polishing mechanism 14 to slide along the side wall of the spoke, and then polish the side wall of the spoke on the hub simultaneously.

[0043] After use: The manipulator 13 drives the connecting frame 15 upward into the cleaning cover 52, and the dust removal fan device is started to introduce wind force into the cleaning cover 52 to clean the polishing mechanism 14.

[0044] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made without departing from the spirit of the present invention within the scope of knowledge of those skilled in the art to which the present invention pertains.

Claims

1. An automatic hub grinding and processing machine, characterized in that, The machine comprises a machine platform (10), a turntable (11) is rotatably mounted on the tabletop of the machine platform (10), both ends of the turntable (11) are mounted with a cylinder clamping mechanism, a bracket (12) is connected to the tabletop of the machine platform (10) on one side of the turntable (11), a manipulator (13) is mounted on the top of the bracket (12), a connecting frame (15) is connected to the end of the manipulator (13), a bottom frame (16) is connected to the bottom frame (16) through a column, a pneumatic motor (17) is mounted on the bottom frame (16), and a transmission shaft of the pneumatic motor (17) is connected to a driving shaft (18) ), the free end of the driving shaft (18) is downwardly directed and connected to a clamp (19), the clamping end of the clamp (19) clamps a center grinding head (20), a side grinding assembly that can expand outward is provided on the base frame (16), a separately driven grinding head is provided on the side grinding assembly, an expansion assembly for driving the separately driven grinding head on the side grinding assembly to expand outward is provided on the base frame (16), a sliding assembly is provided on the side grinding assembly, the sliding assembly is used to adjust the distance of the separately driven grinding head on the side grinding assembly, and to generate pressure for the separately driven grinding head on the side grinding assembly to resist the wheel hub.

2. The automatic hub grinding and processing machine according to claim 1, wherein The side grinding assembly comprises a connecting shaft (21), the connecting shaft (21) is connected to the bottom surface of the connecting frame (15), the free end of the connecting frame (15) is connected to a fixing plate (22), at least five rotating holes (23) are provided in an annular shape on the fixing plate (22), at least five side grinding circuit bins (24) are provided in an annular shape on the rotating hole (23), an annular protrusion is provided on the bottom surface of one end of the side grinding circuit bin (24) and is rotatable with the rotating hole (23) at a corresponding position through a rotating bearing The side grinding circuit bin (24) is connected to a side grinding frame (25) at one end of the bottom surface away from the rotating hole (23), and a clamp (19) is arranged on the bottom surface of the side grinding frame (25). The clamping end of the clamp (19) clamps a surrounding grinding head (26), and the surrounding grinding head (26) is located above the central grinding head (20). A side grinding motor (27) is installed on the side grinding circuit bin (24), and the transmission shaft of the side grinding motor (27) is transmission-connected to the clamp (19) at the corresponding position.

3. An automatic hub grinding and processing machine according to claim 2, characterized in that, The unfolding assembly comprises a lifting cylinder (28), the lifting cylinder (28) being mounted on one side of the base frame (16), the transmission shaft of the lifting cylinder (28) being connected to a positioning plate (29), sleeve plates (30) being arranged on both sides of the bottom surface of the positioning plate (29), the top surface of the sleeve plate (30) being provided with a hole and being connected to a rotating rod (32) via a rotating bearing, one end of the rotating rod (32) being located inside the sleeve plate (30) being connected to a driving gear (31), and the top end of the rotating rod (32) being rotated The bearing is rotatably connected to the adjustment plate (29), and a motor for driving a rotating rod (32) on one side to rotate is installed on the adjustment plate (29). The corresponding surfaces of the two sleeve plates (30) are opened and sleeved with a driven gear ring (33). The driven gear ring (33) is meshed with the driving gear (31). The bottom surface of the driven gear ring (33) is connected to a fixed plate (34). The bottom end of the fixed plate (34) is connected to a sleeve (35). The sleeve (35) has a central opening and the driving shaft (18) is located therein. An expansion tooth ring (36) is connected to the outer wall of the sleeve (35). One end of the side grinding circuit chamber (24) close to the expansion tooth ring (36) is connected with a U-shaped tooth plate (37), and the U-shaped tooth plate (37) meshes with the expansion tooth ring (36).

4. The automatic hub grinding and processing machine according to claim 3, characterized in that, A selection tooth ring (51) is connected to the outer wall of the sleeve (35) above the expansion tooth ring (36). Teeth are provided on both sides of the selection tooth ring (51). An avoidance hole for the expansion tooth ring (36) to pass through is provided at the center of the fixed disk (22).

5. The automatic hub grinding and processing machine according to claim 4, characterized in that, The sliding assembly includes a guide rail (42). A sliding hole is provided on the bottom surface of the side grinding frame (25), and guide rails (42) are connected to both sides of the sliding hole on the bottom surface of the side grinding frame (25). A sliding plate (43) is slidably connected to the guide rail (42). A first bevel gear (38) is connected to the top surface of the fixture (19) at the corresponding position. The first bevel gear (38) is rotatably connected to the rotating hole (23) through a rotating bearing. A hole is provided on the side wall of the side grinding frame (25) and a one-word shaft (44) is connected through a rotating bearing. A sliding frame (45) is connected to one side surface of the sliding plate (43). A hole is provided on the side surface of the sliding frame (45) and a second bevel gear (39) is rotatably installed. The first bevel gear (38) meshes with the second bevel gear (39). The one-word shaft (44) passes through the second bevel gear (39). A third bevel gear (40) is connected to the free end of the one-word shaft (44). A fourth bevel gear (41) is connected to the transmission shaft of the side grinding motor (27). The third bevel gear (40) meshes with the fourth bevel gear (41). A return spring (46) is sleeved between the sliding frame (45) and the side wall of the side grinding frame (25) on the one-word shaft (44). The two ends of the return spring (46) respectively abut against the sliding frame (45) and the side grinding frame (25).

6. The automatic hub grinding and processing machine according to claim 5, characterized in that, A position sensor (47) is installed on the bottom surface of the sliding plate (43). A magnetic induction block (48) is connected to the side surface of the sliding frame (45). An electromagnet (49) is installed on the side grinding frame (25).

7. An automatic hub grinding and processing machine according to claim 5, characterized in that, A protective cover (50) is connected to the side grinding frame (25). The protective cover (50) covers structures such as the first bevel gear (38) inside for protection. A cover plate is connected to the side grinding circuit chamber (24). A simple control circuit board for controlling the side grinding motor (27), the position sensor (47) and the electromagnet (49) is arranged in the side grinding circuit chamber (24), and the circuit connection ports of the circuit board are arranged on the cover plate.

8. An automatic hub grinding and processing machine according to claim 6, characterized in that, A cleaning cover (52) is connected to the outer shell at the end of the manipulator 13. An access pipe (53) for accessing the dust removal fan device is connected to one side of the cleaning cover (52).

Images