Special grinding device for inner ring of automobile hub bearing

Abstract

The invention belongs to the field of automobile hub bearing grinding devices, and discloses a special grinding device for an automobile hub bearing inner race, which comprises a shell, the interior of the shell is divided into two layers, the upper layer of the shell is fixedly provided with an operation box and a collecting funnel, and the lower layer of the shell is fixedly provided with a liquid containing box; a circular pipe is fixedly installed at the bottom of the collecting funnel, by arranging the circulating pump and the liquid containing box, recycling of cutting liquid is achieved, in the grinding process, the circulating pump continuously pumps out the cutting liquid in the liquid containing box, the cutting liquid is sprayed to a grinding area through the spraying pipe at certain pressure and flow, effective cooling and lubricating are achieved, and the grinding efficiency is improved. Grinding cutting fluid and waste residues enter the filtering system through the collecting funnel, filtered liquid flows back into the liquid containing box again to be recycled, through the design, the use cost of the cutting fluid is saved, environmental pollution is reduced, and compared with a traditional device, the cutting fluid recycling device is more environmentally friendly, saves more energy and meets the requirement for green development of the modern industry.

Description

Technical Field

[0001] The invention belongs to the field of grinding processing devices for automotive hub bearings, and particularly relates to a special grinding processing device for the inner ring of an automotive hub bearing. Background Art

[0002] The hub bearing is a key component connecting the tire (rotating part) and the steering knuckle (fixed part), and undertakes the important tasks of transmitting force and reducing friction. It not only has to bear a huge radial load (i.e., the vehicle weight), but also has to cope with the axial load (such as the lateral force or lateral impact force of the tire during steering). The inner ring of the bearing is an important accessory of the automotive hub bearing, and its processing quality directly affects the overall performance and service life of the bearing. When processing the inner ring of the bearing, it is often necessary to perform grinding processing on it to ensure that its dimensional accuracy and surface quality meet the requirements.

[0003] When grinding the inner ring of the bearing, cutting fluid is usually sprayed to reduce the heat generated during the processing and prevent the inner ring of the bearing from being damaged due to overheating. However, during the grinding operation, tiny material particles on the surface of the inner ring of the bearing will be gradually peeled off by the grinding tool, forming a large amount of debris. These debris are polished between the high-speed rotating grinding tool and the inner ring of the bearing, and finally mixed with the cutting fluid, resulting in the pollution of the cutting fluid, causing changes in its physical and chemical properties, making the cutting fluid not only lose its original cooling and lubricating effects, but also may have a negative impact on the subsequent processing process. Therefore, it is necessary to improve and optimize it. Summary of the Invention

[0004] To solve the problem of the debris generated during the grinding process of the inner ring of the bearing being mixed with the cutting fluid, resulting in the pollution of the cutting fluid and affecting its cooling and lubricating effects and subsequent processing as mentioned in the above background art, the invention provides a special grinding processing device for the inner ring of an automotive hub bearing.

[0005] To achieve the above object, the invention provides the following technical solution: A special grinding processing device for the inner ring of an automotive hub bearing, including a housing. The housing is divided into two layers. An operation box and a collection funnel are fixedly installed on the upper layer of the housing, a liquid storage tank is fixedly installed on the lower layer of the housing. A circular tube is fixedly installed at the bottom of the collection funnel. A filter chamber is fixedly installed on the outer wall of the circular tube. A crescent-shaped feeding chute is fixedly installed at the bottom of the filter chamber. The bottom of the crescent-shaped feeding chute penetrates through the housing. A waste residue box is arranged below the crescent-shaped feeding chute. A filtering mechanism is arranged inside the circular tube; The filtering mechanism includes a driving component, a transmission component 1, and a transmission component 2. The transmission component 2 includes two movable grooves opened in the wall of a circular tube, cylinders are fixedly installed inside the two movable grooves, and convex rods are movably installed on the inner walls of the two movable grooves. A waist-shaped groove is opened on the outer wall of the convex rod. The two cylinders respectively penetrate the corresponding waist-shaped grooves and are slidably connected to the corresponding waist-shaped grooves. An annular baffle is fixedly installed on the side where the two convex rods are close to each other, and the annular baffle is in contact with the inner wall of the filter bin. The bottom of the annular baffle is elastically connected to the outer wall of the circular tube by a spring.

[0006] Preferably, the driving assembly includes a power group and a transmission group, the power group includes a rotating rod rotatably mounted on the inner wall of a circular tube, both ends of the rotating rod extend out of the circular tube and are rotatably connected to the inner wall of the liquid tank, a plurality of fan blades are fixedly mounted on the outer wall of the rotating rod, the plurality of fan blades are equidistantly distributed around the axis of the rotating rod, a plurality of vertical grooves are respectively provided on the outer walls on both sides of the plurality of fan blades, an inclined plate and an inclined ring are respectively fixedly mounted inside the circular tube, the inclined plate is located above the rotating rod, and the inclined ring is located below the rotating rod.

[0007] Preferably, the transmission group includes a second rotating rod rotatably mounted on the inner wall of the liquid tank, and the outer walls of the second rotating rod and the first rotating rod are respectively fixedly sleeved with synchronous pulleys and are both connected through a synchronous belt transmission.

[0008] Preferably, a disc is fixedly mounted on the other end of the rotating rod 2, a connecting rod is rotatably mounted on the outer wall of the disc close to the circular tube, and a 匚-shaped rod is movably mounted on the bottom end of the connecting rod.

[0009] Preferably, the transmission component 1 includes a filter screen slidably mounted on the inner wall of a circular tube, a hollow ring is fixedly mounted on the bottom of the filter screen, and the hollow ring is slidably connected to the 匚-shaped rod.

[0010] Preferably, the crescent-shaped feed chute is connected to the filter bin, and the bottom inner wall of the filter bin that is not fixedly connected to the crescent-shaped feed chute is designed to be inclined.

[0011] Preferably, the two movable grooves are designed as trapezoids on both sides and rectangular in the middle. The trapezoids on both sides are designed to be inverted sideways and the upper bases of the two trapezoids are connected to the rectangular groove in the middle.

[0012] Preferably, the filter screen is designed in a diamond shape, and a spring is arranged at the inner center of the filter screen.

[0013] Preferably, it also includes a circulation pump fixedly installed on the lower layer of the shell, the water inlet end of the circulation pump is fixedly connected to the liquid tank, the water outlet end of the circulation pump is fixedly installed with a nozzle, the top end of the nozzle passes through the operation box and is fixedly connected to the operation box.

[0014] Preferably, three Z-shaped fixing pieces are arranged on the front surface of the operation box. A bearing is arranged at the center of the three Z-shaped fixing pieces. The three Z-shaped fixing pieces and the bearing are respectively fixedly connected to the operation box through bolts. A grinding head is arranged at the center of the operation box, and the grinding head is rotatably connected to the inner wall of the bearing.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: By designing the driving component and the transmission component, the present invention realizes the automatic reciprocating movement of the filter screen up and down. It not only improves the filtering efficiency but also realizes the automatic cleaning of the filter screen. When the waste liquid flows through the inclined plate and impacts the fan blades, it will drive the entire transmission system to work, causing the filter screen to slide up and down in the round tube, effectively shaking off impurity particles and preventing blockage. In addition, the dynamic filter barrier design of the circular ring baffle further enhances the interception effect of the waste residue, closely contacts the inner wall of the filter bin, and forms a dynamic filtering system. This design greatly improves the filtering efficiency compared with traditional devices, reduces the frequency of manual cleaning, lowers the maintenance cost, and at the same time improves the stability and service life of the equipment.

[0016] By arranging a circulating pump and a liquid storage tank, the present invention realizes the recycling of the cutting fluid. During the grinding process, the circulating pump continuously pumps out the cutting fluid in the liquid storage tank and sprays it into the grinding area through a spray pipe with a certain pressure and flow rate, achieving effective cooling and lubrication. The cutting fluid and waste residue after grinding enter the filtering system through a collection funnel, and the filtered liquid flows back into the liquid storage tank for recycling. This design not only saves the usage cost of the cutting fluid but also reduces environmental pollution. Compared with traditional devices, the present invention is more environmentally friendly and energy-saving, meeting the requirements of the green development of modern industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic diagram of the internal structure of the outer shell of the present invention; Figure 3 is a schematic diagram of the front sectional structure of the present invention; Figure 4 is a schematic diagram of the partial internal structure of the outer shell of the present invention; Figure 5 is a schematic diagram of the structure of the power unit of the present invention; Figure 6 is a schematic diagram of the front sectional structure of the filtering mechanism of the present invention; Figure 7 is a schematic diagram of the exploded structure of the second transmission component of the present invention; Figure 8 is a schematic diagram of the exploded structure of the first transmission component of the present invention; Figure 9 for the present inventionFigure 8 Schematic enlarged structure diagram of A in

[0018] In the figure: 1. Outer shell; 2. Operation box; 201. Z-shaped fixing piece; 202. Bearing; 203. Grinding head; 3. Collection funnel; 31. Movable groove; 301. Round tube; 3011. Inclined plate; 3012. Inclined ring; 3013. Cylinder; 4. First rotating rod; 401. Fan blade; 5. Second rotating rod; 501. Disc; 5011. Connecting rod; 6. C-shaped rod; 7. Synchronous belt; 8. Filter bin; 801. Crescent-shaped blanking groove; 9. Filter net; 901. Hollow ring; 10. Ring-shaped retaining piece; 1001. Convex rod; 10011. Waist-shaped groove; 11. Liquid storage tank; 12. Circulation pump; 1201. Spray pipe; 13. Waste residue box. Specific implementation mode

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] As Figures 1 to 9 shown, the present invention provides a special grinding processing device for the inner ring of an automotive wheel hub bearing, including an outer shell 1. The inside of the outer shell 1 is divided into two layers. An operation box 2 and a collection funnel 3 are fixedly installed on the upper layer of the outer shell 1, and a liquid storage tank 11 is fixedly installed on the lower layer of the outer shell 1. A round tube 301 is fixedly installed at the bottom of the collection funnel 3. A filter bin 8 is fixedly installed on the outer wall of the round tube 301. A crescent-shaped blanking groove 801 is fixedly installed at the bottom of the filter bin 8. The bottom of the crescent-shaped blanking groove 801 penetrates through the outer shell 1. A waste residue box 13 is arranged below the crescent-shaped blanking groove 801. The crescent-shaped blanking groove 801 is communicated with the filter bin 8. The bottom inner wall of the filter bin 8 not fixedly connected to the crescent-shaped blanking groove 801 is inclined. A filtering mechanism is arranged inside the round tube 301; The filtering mechanism includes a driving component, a first transmission component, and a second transmission component. The second transmission component includes two movable slots 31 formed in the wall of the circular tube 301. Cylinders 3013 are fixedly installed inside the two movable slots 31 respectively. Convex rods 1001 are movably installed on the inner walls of the two movable slots 31 respectively. A waist-shaped slot 10011 is formed on the outer wall of the convex rod 1001. The two cylinders 3013 respectively penetrate through the corresponding waist-shaped slots 10011 and are slidably connected to the corresponding waist-shaped slots 10011. On one side of the two convex rods 1001 close to each other, a circular ring baffle 10 is fixedly installed. The circular ring baffle 10 is in contact with the inner wall of the filtering bin 8. The bottom of the circular ring baffle 10 is elastically connected to the outer wall of the circular tube 301 by a spring. The two sides of the two movable slots 31 are trapezoidally designed, and the middle is rectangularly designed. The two trapezoids on both sides are designed to be inverted laterally, and the upper bases of the two trapezoids are connected to the middle rectangular slot.

[0021] With the above solution: By setting the collection funnel 3, the waste residue and cutting fluid generated during the cutting process enter the circular tube 301 through the collection funnel 3; the circular tube 301 serves as a channel for the waste residue and cutting fluid to guide the fluid to flow smoothly; the waste residue and cutting fluid then enter the filtering bin 8 for solid-liquid separation; since the inner wall of the bottom of the filtering bin 8 not fixedly connected to the crescent-shaped blanking slot 801 is inclined, the waste residue will slide down along the inclined surface under the action of gravity and enter the crescent-shaped blanking slot 801 to continue flowing downward; through the cooperation of the cylinders 3013 and the convex rods 1001 in the two movable slots 31, the convex rods 1001 are allowed to slide on the cylinders 3013. At the same time, the design of the waist-shaped slot 10011 limits the movement range of the convex rods 1001, ensuring the stable movement of the circular ring baffle 10. The circular ring baffle 10 is in close contact with the inner wall of the filtering bin 8, forming a dynamic filtering barrier. As the cutting fluid flows, the waste residue will be intercepted by the circular ring baffle 10 during the sliding process and accumulate at the bottom of the filtering bin 8; when the waste residue accumulates to a certain extent, they will be discharged through the crescent-shaped blanking slot 801 and enter the waste residue box 13 for collection.

[0022] As Figures 4 to 7As shown, the driving assembly includes a power group and a transmission group. The power group includes a rotating rod 4 rotatably mounted on the inner wall of the circular tube 301. Both ends of the rotating rod 4 extend out of the circular tube 301 and are rotatably connected to the inner wall of the liquid tank 11. A plurality of blades 401 are fixedly mounted on the outer wall of the rotating rod 4. The plurality of blades 401 are designed to be evenly distributed with the axis of the rotating rod 4 as the center of the circle. A plurality of vertical grooves are respectively provided on the outer walls of both sides of the plurality of blades 401. Inclined plates 3011 and inclined rings 3012 are respectively fixedly mounted inside the circular tube 301. The inclined plates 3011 are located above the rotating rod 4, and the inclined rings 3012 are located below the rotating rod 4. The transmission group It includes a rotating rod 5 rotatably mounted on the inner wall of the liquid tank 11, and the outer walls of the rotating rod 25 and the rotating rod 1 4 are respectively fixedly sleeved with synchronous pulleys and are both connected through a synchronous belt 7 for transmission, a disc 501 is fixedly mounted on the other end of the rotating rod 25, a connecting rod 5011 is rotatably mounted on the outer wall of the disc 501 on one side close to the circular tube 301, and a 匚-shaped rod 6 is movably mounted on the bottom end of the connecting rod 5011, and a transmission component 1 includes a filter screen 9 slidably mounted on the inner wall of the circular tube 301, a hollow ring 901 is fixedly mounted on the bottom of the filter screen 9, the hollow ring 901 is slidably connected to the 匚-shaped rod 6, the filter screen 9 is designed in a diamond shape, and a spring is arranged at the inner center of the filter screen 9.

[0023] The above scheme is adopted: by setting a driving component, when the waste liquid flows through the inclined plate 3011 and flows down along its inclined direction, it will impact the fan blade 401, thereby driving the rotating rod 4 to rotate; the vertical grooves opened on the outer walls of both sides of the fan blade 401 help to increase the contact area between the water flow and the fan blade 401, and improve the rotation efficiency; the transmission group is mainly composed of a rotating rod 2 5 and a synchronous belt 7; the rotating rod 2 5 is rotatably installed on the inner wall of the liquid tank 11, and is connected to the rotating rod 1 4 through a synchronous pulley and a synchronous belt 7. When the rotating rod 1 4 rotates, it will drive the rotating rod 2 5 to rotate synchronously through the synchronous belt 7; the other end of the rotating rod 2 5 is fixedly installed with a disk 501, and the disk 501 is rotatably installed Connecting rod 5011; with the rotation of rotating rod 25, disc 501 will drive connecting rod 5011 to perform periodic up and down movements, and transmission component 1 is mainly composed of filter screen 9 and 匚-shaped rod 6; filter screen 9 is slidably installed on the inner wall of circular tube 301, and a hollow ring 901 is fixedly installed at the bottom thereof, and hollow ring 901 is slidably connected with 匚-shaped rod 6; so that filter screen 9 slides up and down under the drive of 匚-shaped rod 6; filter screen 9 is diamond-shaped in design, and a spring is arranged at the inner center; this design not only increases the strength of filter screen 9, but also makes it have a certain elasticity, plays a role of buffering and resetting, can better adapt to the size of water flow, and prolongs the service life of filter screen 9.

[0024] When the waste liquid flows down from the inclined plate 3011 and impacts the fan blade 401, it will drive the first rotating rod 4 to rotate; the rotation of the first rotating rod is transmitted to the second rotating rod 5 through the synchronous belt 7, thereby driving the disk 501 and the connecting rod 5011 to swing up and down; the swing of the connecting rod 5011 will drive the U-shaped rod 6 to slide up and down within the hollow ring 901, thereby driving the filter net 9 to reciprocate up and down within the circular tube 301, which helps to shake off the impurity particles on the filter net 9 and prevent blockage. At the same time, after the waste liquid flows through the inclined ring 3012, it will contact the filter net, and the filtered liquid will continue to flow back into the liquid storage tank 11 for recycling.

[0025] As Figures 1 to 3 shown, it further includes a circulation pump 12 fixedly installed at the lower layer of the housing 1. The water inlet end of the circulation pump 12 is fixedly connected to the liquid storage tank 11. The water outlet end of the circulation pump 12 is fixedly installed with a spray pipe 1201. The top end of the spray pipe 1201 penetrates through the operation box 2 and is fixedly connected to the operation box 2. Three Z-shaped fixing pieces 201 are arranged on the front surface of the operation box 2. A bearing 202 is arranged at the center of the three Z-shaped fixing pieces 201. The three Z-shaped fixing pieces 201 and the bearing 202 are respectively fixedly connected to the operation box 2 through bolts. A grinding head 203 is arranged at the center of the operation box 2. The grinding head 203 is rotationally connected to the inner wall of the bearing 202.

[0026] Adopting the above scheme: by setting the circulation pump 12, during the grinding process, the circulation pump 12 continuously pumps out the cutting fluid in the liquid storage tank 11 and sprays it onto the contact surface between the bearing 202 and the grinding head 203 with a certain pressure and flow rate through the spray pipe 1201, achieving effective cooling and lubrication, and ensuring the efficient progress of the grinding operation; the three Z-shaped fixing pieces 201 are evenly distributed on the front surface of the operation box 2, which not only provides sufficient supporting area but also is tightly connected to the operation box 2 through bolts, ensuring the stability of the bearing 202 during the grinding process. The bearing 202 is fixedly connected to the Z-shaped fixing piece 201 and the operation box 2 through bolts, which enhances the anti-vibration performance of the bearing 202 during the grinding process and effectively avoids the decline of grinding accuracy or equipment damage caused by vibration.

[0027] The working principle and usage process of the present invention: The staff prepares the Z-shaped fixing piece 201 to be ground and firmly fixes the bearing 202 on the outer wall of the operation box 2 through the Z-shaped fixing piece 201 and bolts; this step ensures the stability and safety of the grinding operation; adjusts the position of the nozzle 1201 so that the cutting fluid ejected can accurately cover the grinding area; this design improves the utilization efficiency of the cutting fluid and ensures effective cooling and lubrication during the grinding process; adds cutting fluid to the liquid storage tank 11 and starts the grinding head 203 and the circulation pump 12; the grinding head 203 efficiently grinds the inner wall of the bearing 202, and at the same time the circulation pump 12 sucks the cutting fluid from the liquid storage tank 11 and sprays it onto the grinding area through the nozzle 1201 to achieve the dual effects of cooling and lubrication; The cutting fluid mixed with grinding waste generated during the grinding process enters the round tube 301 through the collection funnel 3; this design ensures the centralized collection and subsequent treatment of the cutting fluid; the waste liquid first contacts the inclined plate 3011, and the inclined design of the inclined plate 3011 enables the waste liquid to flow in one direction and then contacts the fan blade 401; the continuous flow of the water drives the fan blade 401 to rotate, and then through the transmission of the synchronous belt 7, the second rotating rod 5 and the disc 501 rotate, and finally drive the connecting rod 5011 and the C-shaped rod 6 to perform periodic up and down movements; the periodic movement of the C-shaped rod 6 causes the filter screen 9 to slide up and down in the round tube 301; this design not only realizes the automatic cleaning of the filter screen but also improves the filtration efficiency; When the filter screen 9 slides upward, it contacts the convex rods 1001 on both sides of the round tube 301 and toggles the convex rods 1001 upward, causing the circular ring baffle 10 to change from a horizontal state to an inclined state; when the filter screen 9 descends, it continues to contact the convex rods 1001, and the inclined state of the circular ring baffle 10 is opposite; this design ensures that the filter screen 9 can automatically adjust the state of the circular ring baffle 10 during the up and down sliding process, thus effectively preventing waste chips from blocking the filter opening. The waste liquid flows through the inclined ring 3012 and then contacts the filter screen 9, and the filtered liquid returns to the liquid storage tank 11 through the round tube 301 for recycling; this design not only saves the usage cost of the cutting fluid but also reduces environmental pollution. The top of the filter screen 9 is designed with a higher middle and lower sides on both sides, so that the waste chips remaining on the top can smoothly fall into the filter bin 8 during the upward movement of the filter screen 9 and finally fall into the crescent-shaped blanking groove 801 through the inclination of the circular ring baffle 10 and finally into the waste residue box 13 for collection; this design ensures the effective collection and cleaning of waste chips and improves the cleanliness and service life of the equipment.

[0028] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A special grinding device for an inner ring of a hub bearing of an automobile, comprising a housing (1), wherein the housing (1) is divided into two layers, and wherein: An operation box (2) and a collection funnel (3) are fixedly installed on the upper layer of the outer shell (1). A liquid storage tank (11) is fixedly installed on the lower layer of the outer shell (1). A circular tube (301) is fixedly installed at the bottom of the collection funnel (3). A filter chamber (8) is fixedly installed on the outer wall of the circular tube (301). A crescent-shaped blanking groove (801) is fixedly installed at the bottom of the filter chamber (8). The bottom of the crescent-shaped blanking groove (801) penetrates through the outer shell (1). A waste residue box (13) is arranged below the crescent-shaped blanking groove (801). A filtering mechanism is arranged inside the circular tube (301). The filtering mechanism includes a driving component, a first transmission component, and a second transmission component. The second transmission component includes two movable grooves (31) formed in the wall of the circular tube (301). Cylinders (3013) are respectively fixedly installed inside the two movable grooves (31). Convex rods (1001) are respectively movably installed on the inner walls of the two movable grooves (31). A waist-shaped groove (10011) is formed on the outer wall of the convex rod (1001). The two cylinders (3013) respectively penetrate through the corresponding waist-shaped grooves (10011) and are slidably connected with the corresponding waist-shaped grooves (10011). Ring-shaped retaining pieces (10) are fixedly installed on the sides of the two convex rods (1001) close to each other. The ring-shaped retaining pieces (10) are in contact with the inner wall of the filter chamber (8). The bottom of the ring-shaped retaining piece (10) is elastically connected with the outer wall of the circular tube (301) through a spring.

2. The special grinding device for the inner ring of the automobile hub bearing according to claim 1 is characterized in that: The driving component includes a power group and a transmission group. The power group includes a first rotating rod (4) rotatably installed on the inner wall of the circular tube (301). Both ends of the first rotating rod (4) extend out of the circular tube (301) and are rotatably connected with the inner wall of the liquid storage tank (11). A plurality of fan blades (401) are fixedly installed on the outer wall of the first rotating rod (4). The plurality of fan blades (401) are designed to be equidistantly distributed around the axis of the first rotating rod (4). A plurality of vertical grooves are respectively formed on the outer walls on both sides of the plurality of fan blades (401). An inclined plate (3011) and an inclined ring (3012) are respectively fixedly installed inside the circular tube (301). The inclined plate (3011) is located above the first rotating rod (4). The inclined ring (3012) is located below the first rotating rod (4).

3. The special grinding device for the inner ring of the automobile hub bearing according to claim 2 is characterized in that: The transmission group includes a second rotating rod (5) rotatably installed on the inner wall of the liquid storage tank (11). Synchronous belt wheels are respectively fixedly sleeved on the outer walls of the second rotating rod (5) and the first rotating rod (4), and they are both传动连接 by a synchronous belt (7).

4. The special grinding device for the inner ring of the automobile hub bearing according to claim 3 is characterized in that: The other end of the second rotating rod (5) is fixedly installed with a disc (501). A connecting rod (5011) is rotatably installed on the outer wall of the disc (501) close to the circular tube (301). The bottom end of the connecting rod (5011) is movably installed with a U-shaped rod (6).

5. The special grinding device for the inner ring of the automobile hub bearing according to claim 4 is characterized in that: The first transmission component includes a filter net (9) slidably installed on the inner wall of the circular tube (301). A hollow ring (901) is fixedly installed at the bottom of the filter net (9). The hollow ring (901) is slidably connected with the U-shaped rod (6). It should be noted that there is an incorrect expression "传动连接" in the original Chinese text. It should be "传动连接" which means "driven connection" or "transmission connection". The correct English expression should be "driven by" or "transmission connection". The above translation has made corresponding corrections.

6. The special grinding device for the inner ring of the automobile hub bearing according to claim 1, characterized in that: The crescent-shaped material discharge trough (801) is connected to the filter bin (8), and the bottom inner wall of the filter bin (8) that is not fixedly connected to the crescent-shaped material discharge trough (801) is designed to be inclined.

7. The special grinding device for the inner ring of the automobile hub bearing according to claim 1, characterized in that: The two movable grooves (31) are respectively designed in a trapezoidal shape on both sides and in a rectangular shape in the middle. The trapezoids on both sides are designed to be tilted sideways and the upper bases of the two trapezoids are connected to the rectangular groove in the middle.

8. The special grinding device for the inner ring of the automobile hub bearing according to claim 5, characterized in that: The filter screen (9) is designed in a diamond shape, and a spring is arranged at the inner center of the filter screen (9).

9. The dedicated grinding device for the inner ring of a hub bearing of an automobile according to claim 1, characterized in that: It also comprises a circulation pump (12) fixedly mounted on the lower layer of the housing (1), the water inlet end of the circulation pump (12) being fixedly connected to the liquid tank (11), the water outlet end of the circulation pump (12) being fixedly mounted with a nozzle (1201), the top end of the nozzle (1201) penetrating the operating box (2) and being fixedly connected to the operating box (2).

10. The special grinding device for the inner ring of the automobile hub bearing according to claim 1, characterized in that: The front of the operating box (2) is provided with three Z-shaped fixing plates (201), the centers of the three Z-shaped fixing plates (201) are provided with bearings (202), the three Z-shaped fixing plates (201) and the bearings (202) are respectively fixedly connected to the operating box (2) via bolts, and the center of the operating box (2) is provided with a grinding head (203), and the grinding head (203) is rotatably connected to the inner wall of the bearing (202).

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