A wheel hub dust extraction polishing apparatus

Abstract

The application discloses a wheel hub dust absorption polishing equipment and relates to the polishing processing technical field of automobile parts. The wheel hub bearing seat is provided with a cleaning and placing assembly. The negative pressure airflow generated by a fan is used to clean the wheel hub placing area. The inclined side of the trapezoidal face guides the metal powder, polishing wax debris, linen fibers and environmental dust in the supporting base and the wheel hub placing area to the adsorption groove. The above-mentioned impurities are discharged in sequence through the conical negative pressure suction groove, the fan and the discharge pipe. The wheel hub bearing seat is in a clean state before receiving the wheel hub, the stability of the wheel hub positioning and the consistency of the continuous polishing processing are improved. After the wheel hub is discharged, the adsorption groove is exposed again and the wheel hub placing area is cleaned again, so that the wheel hub bearing seat returns to the clean state before loading.

Description

Technical Field

[0001] This invention relates to the field of automotive parts polishing technology, specifically a wheel hub chip removal and polishing device. Background Technology

[0002] Automotive wheel hubs are crucial components of a vehicle's driving system, and their surface quality directly impacts their appearance and subsequent surface treatment effects. During the production of automotive wheel hubs, polishing equipment is typically used to process the surface, removing burrs, oxide layers, and machining marks. This ensures the surface meets the requirements for subsequent painting, electroplating, or decorative treatments. Existing wheel hub polishing equipment mainly includes a worktable, a wheel hub support mechanism, a rotary drive mechanism, and a polishing mechanism. After the wheel hub is placed on the support mechanism, the rotary drive mechanism rotates the hub, and a high-speed rotating cloth polishing wheel polishes the surface.

[0003] During the polishing process, the burlap polishing wheel continuously rubs against the surface of the wheel hub, generating metal powder, polishing wax debris, and burlap fibers. As the burlap polishing wheel rotates at high speed, it creates turbulent airflow around it. Some polishing debris diffuses around the wheel hub with the airflow, while other polishing debris falls into the inner cavity of the wheel hub and the wheel hub support mechanism through the center hole, bolt holes, and spoke gaps. The external dust collection structure of existing equipment is usually far from the inner cavity of the wheel hub and the wheel hub support position, making it difficult to collect the debris that has entered the inside of the wheel hub and under the wheel hub in a timely manner. This easily causes debris to accumulate in the inner cavity of the wheel hub, the support structure, and the working area of ​​the equipment. After the wheel hub is removed from the wheel hub support mechanism, metal powder, polishing wax debris, and burlap fibers are likely to remain in the wheel hub placement area. When the next wheel hub is placed directly in the support position that has not been cleaned, the remaining hard metal particles are likely to get stuck between the wheel hub and the support structure, causing the wheel hub to shift position or rotate and scratch the inner contact surface of the wheel hub. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a wheel hub dust collection and polishing device, which solves the problem that metal powder, polishing wax debris, and burlap fibers easily remain in the wheel hub placement area of ​​wheel hub polishing equipment, leading to wheel hub positioning misalignment, rotational runout, scratches on the contact surface, and secondary pollution after processing.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a wheel hub chip removal and polishing device, comprising a base, a rotary worktable, a servo turntable, a wheel hub support, a polishing machine, and a burlap composite polishing wheel. The rotary worktable is mounted on the base, the servo turntable is mounted on the rotary worktable, the wheel hub support is mounted on the servo turntable, and the burlap composite polishing wheel is mounted at the output end of the polishing machine. The device also includes a chip removal and cooling component and a cleaning and placement component. The cleaning and placement component is mounted on the wheel hub support and includes a limiting ring, an adsorption groove, and a trapezoidal surface. The trapezoidal surface is adjacent to the adsorption groove, and the inclined side of the trapezoidal surface faces the adsorption groove. The chip suction and cooling assembly includes a conical negative pressure suction groove, a fan, and a discharge pipe. The suction groove is connected to the conical negative pressure suction groove, and the conical negative pressure suction groove, the fan, and the discharge pipe are connected in sequence.

[0006] Furthermore, the servo turntable is provided with a rotating column, and the hub support includes a support base, a support column, a limiting platform, and a limiting column. The support base is disposed on the rotating column, the support column is connected between the support base and the limiting platform, and the limiting column protrudes from the limiting platform.

[0007] Furthermore, the limiting platform, the limiting ring, and the rotating column are coaxially arranged. The limiting platform mates with the center hole of the wheel hub, the limiting column is inserted into the bolt hole of the wheel hub, and the limiting ring mates with the inner contour of the wheel hub.

[0008] Furthermore, the adsorption groove is disposed on the side of the cleaning and placement assembly facing the wheel hub, the limiting ring surrounds the adsorption groove, and the trapezoidal surface is disposed on the side of the limiting ring facing the adsorption groove.

[0009] Furthermore, when the hub is placed on the hub support, the inner surface of the hub contacts the trapezoidal surface and covers the opening of the adsorption groove, and the inner surface of the hub, the trapezoidal surface and the limiting ring form a closed placement area.

[0010] Furthermore, the chip suction and cooling assembly also includes an annular suction groove, an arc-shaped feeding groove, and a fixing column. The annular suction groove is disposed on the limiting platform, the arc-shaped feeding groove is disposed below the annular suction groove, and the fixing column is disposed between the limiting platform and the fan. The annular suction groove, the arc-shaped feeding groove, the fan, and the discharge pipe are connected in sequence.

[0011] Furthermore, the fixing column is sleeved inside the support column, and a flow guide channel is formed between the outer side of the fixing column and the inside of the support column. The arc-shaped feed groove is connected to the upper end of the flow guide channel, and the lower end of the flow guide channel is connected to the air inlet side of the fan.

[0012] Furthermore, the conical negative pressure suction groove is disposed inside the hub support seat, five servo turntables are disposed on the rotary worktable, the five servo turntables are distributed at intervals along the circumference of the rotary worktable, four polishing machines are disposed around the rotary worktable, and the burlap composite polishing wheel moves toward the hub support seat.

[0013] The present invention has the following beneficial effects: This wheel hub dust collection and polishing equipment uses a cleaning and placement component on the wheel hub support to clean the wheel hub placement area using negative pressure airflow generated by a fan. The inclined side of the trapezoidal surface guides metal powder, polishing wax debris, burlap fibers, and environmental dust from the support base and wheel hub placement area to the adsorption tank. These impurities are then discharged sequentially through the conical negative pressure suction tank, the fan, and the discharge pipe, ensuring that the wheel hub support is clean before receiving the wheel hub. This improves the stability of wheel hub positioning and the consistency of continuous polishing. After the wheel hub is unloaded, the adsorption tank is re-exposed and the wheel hub placement area is cleaned again, restoring the wheel hub support to a clean, ready-to-load state.

[0014] This wheel hub dust removal and polishing equipment uses a dust removal and cooling component installed inside the wheel hub support. It also utilizes an annular suction groove, a circular arc feed groove, a fixed column, a fan, a conical negative pressure suction groove, and a discharge pipe to form a negative pressure dust removal path between the center area and the inner cavity area of ​​the wheel hub. The negative pressure generated by the fan forces external air to flow into the wheel hub through the center hole, bolt holes, and spoke gaps. The flowing air carries away some of the frictional heat from the inner wall of the wheel hub, the root of the spokes, and the center area of ​​the wheel hub, reducing the degree to which the polishing wax, after being heated and softened, mixes and adheres to the metal powder and burlap fibers. This improves the cleanliness and polishing quality of the wheel hub surface and reduces the burden of subsequent manual cleaning.

[0015] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the overall structure of the polishing machine of the present invention; Figure 4 This is a schematic diagram of the overall structure of the hub bearing seat of the present invention; Figure 5 This is a schematic diagram of the internal structure of the hub bearing seat of the present invention; Figure 6 This is a schematic diagram of the internal structure of the chip suction and cooling component of the present invention; Figure 7This is a schematic diagram of the internal structure of the chip suction and cooling component of the present invention from another perspective; Figure 8 This is a schematic diagram of the internal structure of the cleaning and placement component of the present invention.

[0017] In the diagram: 1. Machine base; 2. Rotary worktable; 3. Servo turntable; 301. Rotating column; 4. Hub bearing seat; 401. Support base; 402. Support column; 403. Limiting platform; 404. Limiting column; 5. Polishing machine; 6. Linen composite polishing wheel; 7. Chisel suction and cooling assembly; 701. Annular suction groove; 702. Arc-shaped feed groove; 703. Fixed column; 704. Fan; 705. Conical negative pressure suction groove; 706. Discharge pipe; 8. Cleaning and placement assembly; 801. Limiting ring; 802. Adsorption groove; 803. Trapezoidal surface. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0020] Please see Figures 1-8 This invention provides a technical solution: a wheel hub chip removal and polishing device, including a base 1, a rotary worktable 2, a servo turntable 3, a wheel hub support 4, a polishing machine 5, and a burlap composite polishing wheel 6. The rotary worktable 2 is mounted on the base 1, the servo turntable 3 is mounted on the rotary worktable 2, the wheel hub support 4 is mounted on the servo turntable 3, and the burlap composite polishing wheel 6 is mounted at the output end of the polishing machine 5. It also includes a chip removal and cooling component 7 and a cleaning and placement component 8. The cleaning and placement component 8 is mounted on the wheel hub support 4 and includes a limiting ring 801, an adsorption groove 802, and a trapezoidal surface 803. The trapezoidal surface 803 is adjacent to the adsorption groove 802, and the inclined side of the trapezoidal surface 803 faces the adsorption groove 802. The chip removal and cooling component 7 includes a conical negative pressure suction groove 705, a fan 704, and a discharge pipe 706. The suction groove 802 is connected to the conical negative pressure suction groove 705. The conical negative pressure suction groove 705, the fan 704, and the discharge pipe 706 are connected in sequence. A negative pressure chip removal channel is formed through the suction groove 802, the conical negative pressure suction groove 705, the fan 704, and the discharge pipe 706, so that metal powder, polishing wax debris, burlap fibers, and environmental dust in the wheel hub placement area are concentrated and discharged. The inclined side of the trapezoidal surface 803 guides impurities to the suction groove 802, reducing the amount of impurities remaining in the wheel hub placement area. When the negative pressure airflow passes through the inside of the wheel hub, it carries away the heat generated by polishing, reducing the internal temperature of the wheel hub and the amount of polishing debris adhesion.

[0021] The servo turntable 3 is equipped with a rotating column 301. The hub support 4 includes a support base 401, a support column 402, a limiting platform 403, and a limiting column 404. The support base 401 is mounted on the rotating column 301. The support column 402 connects the support base 401 and the limiting platform 403. The limiting column 404 protrudes from the limiting platform 403. The rotating column 301 transmits the rotational motion of the servo turntable 3 to the support base 401, causing the hub support 4 to drive the hub to rotate stably. The support column 402 positions the limiting platform 403 at the location of the hub's center hole, allowing the limiting platform 403 to directly position the hub's center hole. The limiting column 404 restricts the hub from circumferentially sliding relative to the hub support 4, improving the control accuracy of the hub's rotation angle and polishing position.

[0022] The limiting platform 403, the limiting ring 801, and the rotating column 301 are coaxially arranged. The limiting platform 403 mates with the center hole of the wheel hub, the limiting column 404 is inserted into the bolt hole of the wheel hub, and the limiting ring 801 mates with the inner contour of the wheel hub. The coaxial arrangement of the limiting platform 403, the limiting ring 801, and the rotating column 301 makes the center axis of the wheel hub coincide with the rotation axis of the rotating column 301. The center hole of the wheel hub is fitted on the outer circumference of the limiting platform 403 to achieve center positioning of the wheel hub. The limiting column 404 is inserted into the bolt hole of the wheel hub to achieve circumferential positioning of the wheel hub. The limiting ring 801 contacts the inner contour of the wheel hub to achieve radial positioning of the wheel hub, thereby reducing eccentricity, lateral movement, and circumferential sliding during the rotation of the wheel hub.

[0023] The adsorption tank 802 is located on the side of the cleaning and placement assembly 8 facing the wheel hub. The limiting ring 801 surrounds the adsorption tank 802. The trapezoidal surface 803 is located on the side of the limiting ring 801 facing the adsorption tank 802. The limiting ring 801, the adsorption tank 802 and the trapezoidal surface 803 form a clear flow guiding structure in the radial direction. When the fan 704 is working, impurities in the placement area enter the annular adsorption tank 802 along the inclined direction of the trapezoidal surface 803, so that the negative pressure suction is concentrated on the wheel hub placement area, reducing the residue of metal powder, polishing wax debris and burlap fibers on the trapezoidal surface 803 and the support base 401.

[0024] When the hub is placed on the hub support 4, the inner surface of the hub contacts the trapezoidal surface 803 and covers the opening of the adsorption groove 802. The inner surface of the hub, the trapezoidal surface 803, and the limiting ring 801 form a closed placement area. Before the hub is placed, the adsorption groove 802 is in an open state and the placement area is cleaned by negative pressure. After the hub is placed, the inner surface of the hub contacts the trapezoidal surface 803 and covers the opening of the adsorption groove 802, so that the placement area that has been cleaned enters a closed state, preventing polishing debris from entering the inner contact area of ​​the hub. After the hub is removed, the adsorption groove 802 reopens and cleans the placement area again, thereby ensuring that the placement area is clean before the next hub is placed.

[0025] The chip suction and cooling assembly 7 also includes an annular suction groove 701, an arc-shaped feed groove 702, and a fixing column 703. The annular suction groove 701 is disposed on the limiting platform 403, the arc-shaped feed groove 702 is disposed below the annular suction groove 701, and the fixing column 703 is disposed between the limiting platform 403 and the fan 704. The annular suction groove 701, the arc-shaped feed groove 702, the fan 704, and the discharge pipe 706 are connected in sequence. The annular suction groove 701 absorbs metal powder, polishing wax debris, and burlap fibers from the center hole of the hub and the vicinity of the bolt holes. The arc-shaped feed groove 702 guides the impurities in the annular suction groove 701 to the area below the limiting platform 403. The fixing column 703 limits the flow area for the impurities to move towards the fan 704, thereby forming an independent chip suction path in the center area of ​​the hub, reducing the accumulation and re-attachment of debris in the center of the hub.

[0026] The fixing column 703 is sleeved inside the support column 402. A flow channel is formed between the outer side of the fixing column 703 and the inside of the support column 402. The arc-shaped feed trough 702 is connected to the upper end of the flow channel, and the lower end of the flow channel is connected to the air inlet side of the fan 704. A flow guide gap is formed between the fixing column 703 and the support column 402, so that the impurities discharged from the arc-shaped feed trough 702 move towards the fan 704 along the flow guide gap.

[0027] A conical negative pressure suction groove 705 is set inside the hub support 4. Five servo turntables 3 are set on the rotary worktable 2. The five servo turntables 3 are distributed at intervals along the circumference of the rotary worktable 2. Four polishing machines 5 are set around the rotary worktable 2. The burlap composite polishing wheel 6 moves towards the hub support 4. The rotary worktable 2 drives the hub to pass through the loading and unloading positions and the four polishing positions in sequence, so that the hub loading, polishing at different work stations and unloading are carried out continuously. Different polishing machines 5 complete the polishing operations of different areas or different stages of the hub, improve the batch processing efficiency of the hub, and reduce manual handling between work stations.

[0028] The specific workflow of this invention is as follows: The operator first places the wheel hub to be polished on the wheel hub support 4. The wheel hub support 4 includes a support base 401, a support column 402, a limiting platform 403 and a limiting column 404. The support base 401 is set on the rotating column 301 of the servo turntable 3. The support column 402 is set between the support base 401 and the limiting platform 403, and is used to support the limiting platform 403 at the height position corresponding to the center hole of the wheel hub.

[0029] Before placing the wheel hub to be polished, the dust suction and cooling component 7 first enters the working state. After the fan 704 rotates, the wheel hub is not placed above the cleaning and placement component 8. The trapezoidal surface 803, the suction groove 802, and the wheel hub placement area are all in an open state. External air flows from above the cleaning and placement component 8 to the suction groove 802. The cleaning and placement component 8 includes a limiting ring 801, a suction groove 802, and a trapezoidal surface 803. The trapezoidal surface 803 forms the contact surface inside the wheel hub. The suction groove 802 is set in the wheel hub placement area and is connected to the conical negative pressure suction groove 705. The inclined side of the trapezoidal surface 803 faces the suction groove 802. When there are metal powder, polishing wax debris, burlap fibers, and environmental dust on the trapezoidal surface 803 and the support base 401, the negative pressure airflow drives the above impurities to move along the inclined side of the trapezoidal surface 803 to the suction groove 802, so that the impurities enter the suction groove 802.

[0030] Impurities entering the adsorption tank 802 are drawn into the discharge pipe 706 by the airflow generated by the fan 704, and finally transported to the external dust collection device by the discharge pipe 706. By vacuuming and cleaning the trapezoidal surface 803, the support base 401 and the wheel hub placement area before the wheel hub is placed, the wheel hub support 4 is kept clean before receiving the wheel hub.

[0031] After the placement area is cleaned, the operator places the wheel hub to be polished on the wheel hub support 4. The trapezoidal surface 803 of the limiting ring 801 forms a contact fit with the inner contour of the wheel hub through its inclined side, which is used to define the placement area where the adsorption groove 802 is located, and to close the air intake space above the adsorption groove 802 after the wheel hub is placed.

[0032] Meanwhile, the hub center hole cooperates with the limiting platform 403, which determines the radial center position of the hub. The limiting post 404 is inserted into the corresponding bolt hole of the hub to restrict the hub from rotating circumferentially relative to the hub carrier 4. The limiting ring 801 cooperates with the inner contour of the hub to radially limit the hub and prevent the hub from moving laterally relative to the hub carrier 4 during loading, station change and polishing. The limiting platform 403, the limiting post 404 and the limiting ring 801 together position the hub so that the hub center axis coincides with the rotation axis of the rotating post 301. After the hub is placed in place, the inner surface of the hub contacts the trapezoidal surface 803 and closes the placement area where the trapezoidal surface 803 and the adsorption tank 802 are located. Since the air intake channel above the adsorption tank 802 is blocked by the hub, the adsorption tank 802 no longer continuously cleans the contact area with airflow. The cleaning placement component 8 changes from the negative pressure cleaning state before placement to the closed state after placement.

[0033] After the hub is positioned, the rotary table 2 starts to rotate. The rotary table 2 drives the servo turntable 3, rotating column 301, hub support 4 and the hub to be polished to move together, transporting the hub to be polished to the corresponding polishing machine 5. After the hub reaches the polishing position, the rotary table 2 stops rotating, so that the hub to be polished and the corresponding linen composite polishing wheel 6 are in the set processing position.

[0034] Subsequently, the servo turntable 3 is started. The servo turntable 3 drives the hub support 4 to rotate through the rotating column 301. The hub support 4 drives the hub to rotate around its own central axis. Since the limiting column 404 is inserted into the hub bolt hole, the hub will not slide circumferentially relative to the hub support 4. The rotation speed and rotation angle of the hub are controlled by the servo turntable 3. The polishing machine 5 drives the burlap composite polishing wheel 6 to rotate and brings the burlap composite polishing wheel 6 close to the surface of the hub to be polished. After the burlap composite polishing wheel 6 contacts the surface of the hub, it performs friction polishing on the surface of the hub. The servo turntable 3 drives the hub to rotate continuously, so that different circumferential positions of the hub pass through the burlap composite polishing wheel 6 in sequence, thereby continuously polishing the surface of the hub.

[0035] During the polishing process, the burlap composite polishing wheel 6 rubs against the surface of the hub, generating metal powder, polishing wax debris, and burlap fibers. Simultaneously, frictional heat is generated at the polishing location of the hub. The fan 704 continues to rotate, creating a negative pressure airflow within the annular suction groove 701, the arc-shaped feed groove 702, the fixed column 703, and the conical negative pressure suction groove 705. The metal powder, polishing wax debris, and burlap fibers located in the center and upper areas of the hub enter the annular suction groove 701 under the action of the negative pressure airflow. The annular suction groove 701 is arranged along the center area of ​​the hub and is used to absorb impurities generated during polishing from the center of the hub. The impurities entering the annular suction groove 701 pass through the arc-shaped feed groove 702 and enter between the fixed column 703 and the support column 402, and move towards the discharge pipe 706 under the action of the airflow generated by the fan 704.

[0036] Since the limiting platform 403 cannot provide complete sealing support for the inner side of the wheel hub, some impurities that fall into the inner cavity of the wheel hub, the gap between the spokes, and above the support base 401 move downwards towards the center of the wheel hub under the negative pressure generated by the conical negative pressure suction groove 705. The conical negative pressure suction groove 705 guides the airflow to converge by its structure that gradually contracts towards the fan 704, so that the impurities that have entered the wheel hub are concentrated and pass through the fan 704 and enter the discharge pipe 706. The discharge pipe 706 transports the collected impurities to an external dust collection device to prevent the impurities from returning to the surface of the wheel hub.

[0037] While fan 704 generates negative pressure, external air enters the hub through the center hole, bolt holes, and spoke gaps. The flowing air sequentially passes through the inner wall of the hub, the root of the spokes, the central area of ​​the hub, and the conical negative pressure suction groove 705, carrying away some of the frictional heat inside the hub to lower the temperature of the central area and the root of the spokes. By cooling the interior of the hub with airflow, the degree to which the polishing wax softens due to increased temperature is reduced, thus decreasing the probability of the polishing wax mixing with metal powder and linen fibers and adhering to the inner wall of the hub. At the same time, the negative pressure airflow promptly transports any impurities that have been generated to the discharge pipe 706, reducing the accumulation of impurities in the inner cavity of the hub and their re-adhesion to the polished surface.

[0038] After polishing at the current station is completed, the polishing machine 5 drives the burlap composite polishing wheel 6 away from the hub surface, and the servo turntable 3 stops rotating. The rotary table 2 rotates again, transporting the hub that has completed the current polishing process to the next polishing station or unloading station. After the hub arrives at the unloading station, the operator removes the hub from the hub support 4. After the hub leaves, the trapezoidal surface 803, the adsorption tank 802, and the support base 401, which were originally closed by the inner surface of the hub, are exposed again. External air re-enters the placement area of ​​the cleaning placement component 8, and the fan 704 continues to rotate, causing the adsorption tank 802 to re-form an air intake airflow. Metal powder, polishing wax debris, burlap fibers, and environmental dust remaining on the trapezoidal surface 803, the support base 401, and the wheel hub placement area are drawn into the adsorption tank 802 along the inclined side of the trapezoidal surface 803 under the action of negative pressure airflow. Then, they enter the discharge pipe 706 through the fan 704. After the above cleaning is completed, the wheel hub support 4 re-enters a clean, ready-to-load state for the next wheel hub to be polished, thus ensuring that the placement area of ​​the wheel hub support 4 is clean before each wheel hub is placed.

Claims

1. A wheel hub chip removal and polishing device, comprising a base (1), a rotary worktable (2), a servo turntable (3), a wheel hub support (4), a polishing machine (5), and a burlap composite polishing wheel (6), wherein the rotary worktable (2) is disposed on the base (1), the servo turntable (3) is disposed on the rotary worktable (2), the wheel hub support (4) is disposed on the servo turntable (3), and the burlap composite polishing wheel (6) is disposed at the output end of the polishing machine (5), characterized in that: It also includes a chip suction and cooling component (7) and a cleaning and placement component (8). The cleaning and placement component (8) is disposed on the wheel hub support (4). The cleaning and placement component (8) includes a limiting ring (801), an adsorption groove (802) and a trapezoidal surface (803). The trapezoidal surface (803) is adjacent to the adsorption groove (802), and the inclined side of the trapezoidal surface (803) faces the adsorption groove (802). The chip suction and cooling component (7) includes a conical negative pressure suction groove (705), a fan (704) and a discharge pipe (706). The adsorption groove (802) is connected to the conical negative pressure suction groove (705), and the conical negative pressure suction groove (705), the fan (704) and the discharge pipe (706) are connected in sequence.

2. The wheel hub chip removal and polishing equipment according to claim 1, characterized in that: The servo turntable (3) is provided with a rotating column (301). The hub support (4) includes a support base (401), a support column (402), a limiting platform (403), and a limiting column (404). The support base (401) is disposed on the rotating column (301). The support column (402) is connected between the support base (401) and the limiting platform (403). The limiting column (404) protrudes from the limiting platform (403).

3. The wheel hub chip removal and polishing equipment according to claim 2, characterized in that: The limiting platform (403), the limiting ring (801), and the rotating column (301) are coaxially arranged. The limiting platform (403) is engaged with the center hole of the wheel hub, the limiting column (404) is inserted into the bolt hole of the wheel hub, and the limiting ring (801) is engaged with the inner contour of the wheel hub.

4. The wheel hub chip removal and polishing equipment according to claim 1, characterized in that: The adsorption groove (802) is located on the side of the cleaning and placement assembly (8) facing the wheel hub, the limiting ring (801) surrounds the adsorption groove (802), and the trapezoidal surface (803) is located on the side of the limiting ring (801) facing the adsorption groove (802).

5. The wheel hub chip removal and polishing equipment according to claim 4, characterized in that: When the hub is placed on the hub support (4), the inner surface of the hub contacts the trapezoidal surface (803) and covers the opening of the adsorption groove (802). The inner surface of the hub, the trapezoidal surface (803) and the limiting ring (801) form a closed placement area.

6. The wheel hub chip removal and polishing equipment according to claim 2, characterized in that: The chip suction and cooling assembly (7) further includes an annular suction groove (701), an arc-shaped feeding groove (702), and a fixing column (703). The annular suction groove (701) is disposed on the limiting platform (403), the arc-shaped feeding groove (702) is disposed below the annular suction groove (701), and the fixing column (703) is disposed between the limiting platform (403) and the fan (704). The annular suction groove (701), the arc-shaped feeding groove (702), the fan (704), and the discharge pipe (706) are connected in sequence.

7. The wheel hub chip removal and polishing equipment according to claim 6, characterized in that: The fixed column (703) is sleeved inside the support column (402). A flow channel is formed between the outer side of the fixed column (703) and the inside of the support column (402). The arc-shaped feed trough (702) is connected to the upper end of the flow channel, and the lower end of the flow channel is connected to the air inlet side of the fan (704).

8. A wheel hub chip removal and polishing device according to claim 6, characterized in that: The conical negative pressure suction groove (705) is set inside the hub support seat (4). Five servo turntables (3) are set on the rotary worktable (2). The five servo turntables (3) are distributed at intervals along the circumference of the rotary worktable (2). Four polishing machines (5) are set around the rotary worktable (2). The burlap composite polishing wheel (6) moves toward the hub support seat (4).

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