Automatic grinding machine and polishing process of hub bearing

Abstract

The invention discloses an automatic grinding machine and a hub bearing polishing process, and relates to the technical field of hub bearing polishing device.The automatic grinding machine comprises a machine tool base, a polishing assembly is arranged on the machine tool base, a containing groove and a containing table are arranged on the upper surface of the machine tool base, and a collecting box is arranged in the containing groove of the machine tool base; an opening is formed in the top of the collecting box, the collecting box is located under the first spraying integrated head, waste liquid generated by polishing is mixed with polishing liquid and falls into the collecting box under the action of gravity, and impurities in the waste liquid are removed through a purification assembly arranged in the collecting box; the polishing solution subjected to preliminary purification enters a magnetic filter which is arranged on a placement table and used for filtering magnetic particles in the polishing solution through a first pipeline at the bottom of the collection box, and a mixing box and a polishing solution storage box used for storing the pure polishing solution are arranged on the placement table. The polishing solution recycling device has the effect of recycling the polishing solution.

Description

Technical Field

[0001] The present invention relates to the technical field of hub bearing polishing equipment, and in particular to an automatic grinding machine and a polishing process for hub bearings. Background Art

[0002] The hub bearing is a key component of the vehicle chassis. It is located inside the hub and mainly functions to support the rotation of the wheel and bear various loads from the vehicle body and the road surface, including radial force, axial force, and torque. The performance of the hub bearing directly affects the driving safety and comfort of the vehicle.

[0003] In the manufacturing process of hub bearings, precision grinding is a key step to ensure product performance. This process is mainly achieved by an automatic grinding machine, and the addition amount of the polishing liquid is precisely controlled during the grinding process. The necessity of quantitatively adding the polishing liquid lies in: firstly, as a grinding medium, the polishing liquid can effectively reduce the temperature in the grinding area and reduce the influence of thermal deformation on the dimensional accuracy of the bearing; secondly, the abrasive particles in the polishing liquid can remove the micro defects on the bearing surface, significantly improve the surface finish, and reduce the friction coefficient.

[0004] The existing hub bearing grinding and polishing process generally uses a polishing wheel for operation, and a large amount of waste liquid is generated in this process. The waste liquid mainly contains two types of pollutants: one is the particulate matter generated by the wear of the polishing wheel, and the other is the metal powder shed from the grinding of the hub bearing. Directly discharging this waste liquid without treatment not only causes waste of resources, but also leads to serious environmental pollution problems, hindering the recycling and reuse of related resources. Summary of the Invention

[0005] The present application provides an automatic grinding machine and a polishing process for hub bearings, which have the function of recycling and reusing the polishing liquid.

[0006] An automatic grinding machine and a polishing process for hub bearings provided by the present application adopt the following technical solutions: An automatic grinding machine and a polishing process for hub bearings. Among them, an automatic grinding machine includes a machine tool base. A polishing component is provided on the machine tool base. An installation groove and a placement table are provided on the upper surface of the machine tool base. A collection box is provided inside the installation groove of the machine tool base. The top of the collection box is open, and the collection box is located directly below the first spraying integration head. The waste liquid generated during polishing, mixed with the polishing liquid, falls into the interior of the collection box under the action of gravity. A purification component provided in the collection box is used to remove impurities in the waste liquid. The preliminarily purified polishing liquid enters a magnetic filter provided on the placement table and used to filter magnetic particles in the polishing liquid through a first pipeline at the bottom of the collection box. A mixing box and a polishing liquid storage box for storing pure polishing liquid are provided on the placement table. Among them, a second pipeline is connected between the bottom output end of the magnetic filter and an input end of the mixing box to introduce the polished polishing liquid into the interior of the mixing box. A third pipeline is connected between the top output end of the polishing liquid storage box and the other input end of the mixing box to direct the pure polishing liquid into the interior of the mixing box, and an ultrasonic mixer provided in the mixing box is used for mixing, so that the pure polishing liquid and the polished polishing liquid are mixed in a certain proportion.

[0007] Preferably, a rectangular frame is provided on the upper surface of the machine tool base. Explosion-proof glass is provided on the four sides and the top surface of the rectangular frame. An inlet and an outlet are sequentially provided from top to bottom on the explosion-proof glass on one side of the rectangular frame. An inlet groove is provided in the inlet of the explosion-proof glass, and an outlet groove is provided in the outlet of the explosion-proof glass. A blanking channel and a turning channel are provided inside the inlet groove. Among them, the turning channel is located at the output end position of the blanking channel. A number of hub bearings arranged in rows roll along the blanking channel to its output end position, and through a telescopic pushing member in the turning channel, the hub bearing located at the output end of the blanking channel is pushed into the turning channel. Subsequently, the subsequent hub bearings will be filled at the output end of the blanking channel under the action of gravity. The turning channel is used to clamp the workpiece and fix the inner ring of the pushed-out hub bearing. At this time, the outer ring of the hub bearing faces the polishing part of the polishing component, and the polishing component is used to polish the outer ring of the hub bearing. The outlet groove is directly below the turning channel. By loosening the clamped workpiece, the polished hub bearing naturally falls into the outlet channel in the outlet groove, and the outlet groove slopes downward towards the outlet to export the polished hub bearing.

[0008] Preferably, the polishing component includes a housing provided inside the machine tool base. A driving motor is provided on the housing. The output end of the driving motor is connected to a driving rotating shaft. The driving rotating shaft penetrates through the interior of the housing and is connected to a polishing wheel. The polishing wheel rolls in the cavity inside the housing.

[0009] Preferably, the polishing wheel includes a disc-shaped wheel body. The radial surface of the wheel body is concave to form a concave portion that matches the outer diameter of the hub bearing. A plurality of strip-shaped grooves for temporarily storing polishing liquid are provided on the concave portion of the wheel body, and the strip-shaped grooves are arranged at equal angles around the central axis of the wheel body.

[0010] Preferably, the strip-shaped groove is sequentially formed with an inner section, a middle section, and an outer section from the inside to the outside. Among them, the inner section of the strip-shaped groove is eccentrically arranged with the center line of the wheel body. The cross-section of the middle section is a circular structure, and the cross-sectional dimension of the middle section is larger than that of the inner section and the outer section. The inner wall of the outer section of the strip-shaped groove is an arc structure, and the outer section of the strip-shaped groove forms an overflow port at the concave portion of the wheel body.

[0011] Preferably, a plurality of strip-shaped grooves at equal angles divide the concave portion of the wheel body into a plurality of polishing solid parts. A polishing surface is formed on the polishing solid of the wheel body, and a plurality of composite layers are provided on the polishing surface. The composite layer includes a plurality of first composite grinding wires and second composite grinding wires. The inner ends of the plurality of first composite grinding wires are connected and the outer sections diverge, and a plurality of spherical matrix points are arranged along the length direction of the first composite grinding wire. The spherical rectangular points between adjacent first composite grinding wires are connected by second composite grinding wires. The second composite grinding wire is an arc structure, and the first composite grinding wire, the spherical matrix points, and the second composite grinding wire form a micro bionic spider web structure.

[0012] Preferably, a micro storage tank for storing polishing liquid is formed between adjacent first composite grinding wires and adjacent second composite grinding wires.

[0013] Preferably, a fixing plate is fixedly installed on the rectangular frame. A first injection integration head for injecting polishing liquid is provided on the fixing plate. A second injection integration head for injecting polishing liquid is provided inside the housing. The first injection integration head is located above the turning channel and faces the gap between the polishing part of the polishing component and the hub bearing. The second injection integration head is located directly above the polishing component.

[0014] Preferably, the mixed polishing liquid is introduced into the inside of the first injection integration head through a fourth pipeline provided on the mixing tank, for introducing the mixed polishing liquid into the gap between the polishing part of the polishing component and the hub bearing. The top output end of the polishing liquid storage tank is connected to the second injection integration head through a fifth pipeline, and the pure polishing liquid will enter the inside of the second injection integration head through the fifth pipeline.

[0015] Preferably, for the polishing process of the hub bearing of this automatic grinding machine, the polishing steps include: S1: Soak the wheel body; By opening the electronic valve provided on the fifth pipeline, pure polishing liquid is introduced into the second injection integration head, and the pure polishing liquid is introduced into the top of the wheel body by means of the second injection head. Under the action of the gravity of the fluid, the pure polishing liquid will gradually diffuse from top to bottom and from the middle to both sides along the radial surface of the wheel body, quickly fill the strip-shaped grooves of "simulating human pores", and continuously infiltrate and fill the micro storage grooves on the polishing surface. After the pure polishing liquid completely covers the surface of the wheel body, it is left standing for 15 - 20 minutes to obtain the infiltrated wheel body; S2: Feeding; The hub bearings arranged in rows roll successively along the blanking channel in the feeding groove to the output end of the feeding groove; a turning channel is provided at the output end of the feeding groove, and the hub bearings at the output end of the blanking channel are pushed out of the blanking channel by a telescopic pusher and enter the turning channel; subsequently, under the action of gravity, the subsequent hub bearings automatically make up the position to ensure that the output end of the blanking channel continuously maintains product supply; S3: Clamping and polishing; The clamping workpiece in the turning channel clamps and fixes the inner ring of the pushed hub bearing to prevent its displacement in the subsequent processes, and at this time, the outer ring of the hub bearing faces the polishing assembly; the polishing assembly performs surface polishing on the outer ring of the clamped and fixed hub bearing and completes the surface treatment of the hub bearing based on the polishing liquid in the first injection integration head; S4: Discharging; After polishing, the clamping mechanism releases the hub bearing, and it naturally falls into the discharging groove located below the turning channel under the action of gravity; the discharging groove is designed to be inclined downward to assist the polished parts to be smoothly exported to the discharging port; S5: Recycling and reusing the polishing liquid The waste liquid generated during the polishing process is mixed with the polishing liquid and flows into the collection box located in the placement groove under the action of gravity; a purification component is arranged inside the collection box, mainly used to remove impurities in the waste liquid; this step ensures the quality of the polishing liquid used subsequently; The preliminarily purified polishing liquid enters the magnetic filter through the first pipeline; used to remove magnetic particles in the liquid and further improve the cleanliness of the polishing liquid; the purified polishing liquid flows from the magnetic filter into the mixing box through the second pipeline, and the pure polishing liquid flows from the storage box into the mixing box through the third pipeline; through the ultrasonic mixer in the mixing box, to ensure that the two polishing liquids are fully mixed in a predetermined proportion; the mixed polishing liquid is transported to the first injection integration head through the fourth pipeline.

[0016] In summary, the present application has the following beneficial effects: 1. By setting up a polishing liquid recycling system with functions of recycling, purifying, filtering and reusing. Specifically, after the waste liquid generated during the polishing process is mixed with the polishing liquid, it flows into the collection tank and successively passes through the purification component, magnetic filter and mixing tank of the collection tank; then through the ultrasonic mixer in the mixing tank, the efficiency of the polishing process is improved and resource waste is reduced. At the same time, the quality of the polishing liquid is ensured throughout the process, thereby improving the polishing effect.

[0017] 2. By imitating the way of "pores in the human body adsorbing oil", the surface of the wheel body is infiltrated. First, the polishing liquid fills the strip-shaped grooves and overflows until it infiltrates the micro storage grooves on the surface of the wheel body; it can effectively guarantee the quality after polishing the hub bearing and can effectively reduce the risk of wear and scratches on the hub bearing.

[0018] 3. By successively arranging a filter element layer, a nickel-titanium alloy filter screen with four layers of mesh holes decreasing in gradient and the mesh holes of each layer being staggeredly arranged, and an adsorption layer from top to bottom for hierarchical purification, which is used to greatly improve the purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the automatic grinding machine in Embodiment 1; Figure 2 is an exploded view of the overall structure of the automatic grinding machine in Embodiment 1; Figure 3 is a schematic diagram of the overall structure of the feed trough in Embodiment 1; Figure 4 is a schematic diagram of the internal structure of the polishing component in Embodiment 1; Figure 5 is a schematic diagram of the internal structure of the polishing wheel in Embodiment 1; Figure 6 is in Embodiment 1 Figure 5 is an enlarged schematic diagram of the structure at A therein; Figure 7 is a schematic diagram of the internal structure of the composite layer in Embodiment 1; Figure 8 is a schematic diagram of the connection structure between the fixing plate and the first injection integrated head in Embodiment 2; Figure 9 is a schematic diagram of the connection structure between the collection tank and the magnetic filter in Embodiment 3; Figure 10 is a schematic diagram of the internal structure of the purification component in Embodiment 3; Description of reference numerals in the drawings: 1, machine tool base; 2, rectangular frame; 3, explosion-proof glass; 4, explosion-proof door; 5, polishing assembly; 501, housing; 502, drive motor; 503, polishing wheel; 50301, wheel body; 50302, concave part; 50303, strip-shaped groove; 50304, inner section; 50305, middle section; 50306, outer section; 50307, liquid overflow port; 50308, polishing surface; 504, composite layer; 50401, first composite grinding wire; 50402, second composite grinding wire; 50403, spherical matrix points; 50404, micro storage tank; 6, feed port; 7, discharge port; 8, feed chute; 9, discharge chute; 10, blanking channel; 11, turning channel; 12, pushing member; 13, fixing plate; 14, first injection integration head; 15, second injection integration head; 16, baffle; 17, placement groove; 18, placement table; 19, collection box; 20, purification assembly; 2001, filter element layer; 2002, nickel-titanium alloy filter screen; 2003, adsorption layer; 2004, adsorption fiber; 2005, activated carbon adsorption block; 2006, grid piece; 2007, vibrating member; 2008, silicone bionic tentacle; 2009, piezoelectric fiber sensor; 21, first pipeline; 22, magnetic filter; 23, mixing box; 24, polishing liquid storage tank; 25, second pipeline; 26, third pipeline; 27, fourth pipeline; 28, fifth pipeline. Detailed implementation manners

[0020] The present application will be further described in detail below with reference to the drawings. It is necessary to point out here that the following specific implementation manners are only used to further illustrate the present application and should not be construed as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0021] Example 1, the present invention discloses an automatic grinding machine and a polishing process for hub bearings. As Figure 1 and Figure 2 shown, this automatic grinding machine is used for polishing hub bearings of the polishing wheel 503, and includes a machine tool base 1. A rectangular frame 2 is fixedly installed on the upper surface of the machine tool base 1. Explosion-proof glasses 3 are provided on the four sides and the top surface of the rectangular frame 2. An observation window is provided on the explosion-proof glass 3 on one side of the rectangular frame 2. A slide rail is provided inside the observation window, and an explosion-proof door 4 is provided on the slide rail. The explosion-proof glass 3 on the rectangular frame 2 forms a bearing polishing space on the machine tool base 1. All hub bearing polishing work is carried out inside the bearing polishing space. The polishing assembly 5 is provided in the bearing polishing space of the machine tool base 1. The hub bearings are polished in a closed space to avoid the leakage of splashes, dust and chips generated during the polishing process. The explosion-proof glass 3 can effectively prevent the sparks or explosive substances that may be generated during high-speed rotation or friction from flying, protecting the safety of operators.

[0022] As Figure 2 , Figure 3 and Figure 4 shown, on the explosion-proof glass 3 on the other side of the rectangular frame 2, a feed inlet 6 and a discharge outlet 7 are successively arranged from top to bottom. A feed chute 8 is arranged in the feed inlet 6 of the explosion-proof glass 3, and a discharge chute 9 is arranged in the discharge outlet 7 of the explosion-proof glass 3. A blanking channel 10 and a turning channel 11 are arranged inside the feed chute 8. Among them, the turning channel 11 is located at the output end position of the blanking channel 10. A plurality of row-arranged hub bearings roll along the blanking channel 10 to its output end position, and through the retractable pushing member 12 in the turning channel 11, the hub bearings located at the output end of the blanking channel 10 are pushed into the turning channel 11, and the subsequent hub bearings will be filled in place at the output end of the blanking channel 10 under the action of gravity. The workpiece is clamped in the turning channel 11 to fix the inner ring of the pushed-out hub bearing. At this time, the outer ring of the hub bearing faces the polishing part of the polishing assembly 5, and the polishing assembly 5 is used to polish the outer ring of the hub bearing. The discharge chute 9 is located directly below the turning channel 11. By releasing the clamped workpiece, the polished hub bearing naturally falls into the discharge channel in the discharge chute 9, and the discharge chute 9 is inclined downward in the direction of the discharge outlet 7 for guiding the polished hub bearing out.

[0023] As Figure 2 , Figure 3 and Figure 4 shown, the row-arranged hub bearings roll successively along the blanking channel 10 in the feed chute 8 to the output end. A turning channel 11 is arranged at the output end of the feed chute 8. The hub bearing at the output end of the blanking channel 10 is pushed out of the blanking channel 10 through the retractable pushing member 12 and enters the turning channel 11. Subsequently, under the action of gravity, the subsequent hub bearings automatically fill in place to ensure continuous product supply at the output end of the blanking channel 10.

[0024] As Figure 2 , Figure 3 and Figure 4 shown, further, the clamping workpiece in the turning channel 11 clamps and fixes the inner ring of the pushed-in hub bearing to prevent it from displacing in the subsequent process, and at this time the outer ring of the hub bearing faces the polishing assembly 5. The polishing assembly 5 performs surface polishing on the outer ring of the clamped and fixed hub bearing to complete the surface treatment of the hub bearing.

[0025] As Figure 2 , Figure 3 and Figure 4 shown, after polishing, the clamping mechanism releases the hub bearing, and it naturally falls into the discharge chute 9 located below the turning channel 11 under the action of gravity. The discharge chute 9 is designed to be inclined downward, effectively assisting the polished parts to be smoothly exported to the discharge outlet 7 to realize the continuous and efficient operation of the whole process.

[0026] As shown Figure 4 in the figure, specifically, the polishing assembly 5 includes a housing 501 fixed inside the machine tool base 1. A driving motor 502 is provided on the housing 501. The output end of the driving motor 502 is connected to a driving rotating shaft. The driving rotating shaft penetrates through the interior of the housing 501 and is connected to a polishing wheel 503. The polishing wheel 503 rolls in the cavity inside the housing 501. By driving the driving rotating shaft by the driving motor 502, the polishing wheel 503 is brought into contact with the outer ring of the hub bearing located in the turning channel 11.

[0027] As shown Figure 5 in the figure, specifically, the polishing wheel 503 includes a disc-shaped wheel body 50301. The radial surface of the wheel body 50301 is concave to form a concave portion 50302 that matches the size of the outer ring of the hub bearing, which can ensure close contact between the polishing wheel 503 and the surface of the hub bearing. This design makes the polishing effect more uniform and effective. A plurality of strip-shaped grooves 50303 for temporarily storing polishing liquid are provided on the concave portion 50302 of the wheel body 50301. The strip-shaped grooves 50303 are arranged at equal angles around the central axis of the wheel body 50301; the strip-shaped grooves 50303 are arranged at equal angles around the central axis of the wheel body 50301, providing multiple storage areas, so that the polishing liquid can be evenly distributed and stored during the polishing process.

[0028] As shown Figure 5 in the figure, when the polishing wheel 503 rotates at a high speed, the centrifugal force pushes the polishing liquid towards the edge of the strip-shaped groove 50303, effectively storing and ensuring contact between the polishing liquid and the surface of the polished hub bearing.

[0029] As shown Figure 6As shown, the strip-shaped groove 50303 is successively formed with an inner section 50304, a middle section 50305, and an outer section 50306 from the inside out. Among them, the inner section 50304 of the strip-shaped groove 50303 is eccentrically arranged with respect to the center line of the wheel body 50301. The eccentric arrangement of the inner section 50304 enhances the storage capacity of the polishing liquid in this section. As the wheel body 50301 rotates, the eccentric design can increase the speed and amount of the polishing liquid being thrown out. The cross-section of the middle section 50305 is a circular structure, and the cross-sectional size of the middle section 50305 is larger than the cross-sectional sizes of the inner section 50304 and the outer section 50306, providing a larger flow channel. By imitating the way of "pores in the human body adsorbing grease", the storage capacity of the ionic polishing liquid is increased, and the fluidity of the polishing liquid is improved. The inner wall of the outer section 50306 of the strip-shaped groove 50303 is an arc structure, which can effectively guide the polishing liquid to be released outward and uniformly adhere to the inner concave portion 50302 of the wheel body 50301, while maintaining the stability of the polishing liquid in the strip-shaped groove 50303. Moreover, the outer section 50306 of the strip-shaped groove 50303 forms an overflow port 50307 at the inner concave portion 50302 of the wheel body 50301. The overflow port 50307 formed in the outer section 50306 allows the excess polishing liquid to be discharged after reaching a certain amount and uniformly adhere to the surface of the wheel body 50301, thereby playing the role of "wetting" the surface of the wheel body 50301, which can effectively ensure the quality of the hub bearing after polishing. It should be noted that during the polishing process of the hub bearing, if the amount of polishing liquid on the surface of the polishing wheel 503 is insufficient, it may lead to an increase in friction during the polishing process, resulting in scratching. The insufficient amount of polishing liquid will cause the polishing material to directly contact the surface to be polished, increasing the risk of wear and scratches on the hub bearing.

[0030] As Figure 6 and Figure 7As shown in the figure, a number of equally angled strip-shaped grooves 50303 divide the concave part 50302 of the wheel body 50301 into a number of polishing solid parts. A polishing surface 50308 is formed on the polishing solid of the wheel body 50301. A number of composite layers 504 are provided on the polishing surface 50308. The composite layer 504 includes a number of first composite grinding wires 50401 and second composite grinding wires 50402. The inner ends of the number of first composite grinding wires 50401 are connected and the outer segments 50306 diverge. A number of spherical matrix points 50403 are provided along the length direction of the first composite grinding wire 50401. The setting of the spherical matrix points 50403 can increase the frictional contact area, thereby improving the grinding efficiency. At the same time, the spherical rectangular points between adjacent first composite grinding wires 50401 are connected by second composite grinding wires 50402. The second composite grinding wire 50402 is an arc structure. The arc structure of the second composite grinding wire 50402 can guide and control the flow of the polishing liquid to ensure that the grinding wire is always lubricated during the polishing process. The first composite grinding wire 50401, the spherical matrix points 50403 and the second composite grinding wire 50402 form a micro bionic spider web structure. The design of the bionic structure draws on the geometric characteristics of the spider web and can provide excellent distributed bearing capacity while maintaining light weight. Through the mutual connection of multiple composite layers 504, the force applied to the polishing surface 50308 can be effectively dispersed, reducing local pressure concentration, thereby improving the polishing effect. The bionic spider web structure makes the application of the polishing force more uniform, reduces the surface scratching phenomenon caused by uneven grinding, and ensures the smoothness of the surface of the outer ring of the hub bearing.

[0031] As Figure 7 shown in the figure, moreover, a micro storage groove 50404 for storing the polishing liquid is formed between adjacent first composite grinding wires 50401 and adjacent second composite grinding wires 50402. The synergistic effect of the storage groove and the above-mentioned strip-shaped grooves 50303, and under the action of the high-speed rotation of the wheel body 50301, is used to ensure that the polishing surface 50308 of the wheel body 50301 is always in a "soaked" state.

[0032] As Figure 7As shown, the first composite grinding wire 50401 and the second composite grinding wire 50402 are made of the same material. The diameters of both the first composite grinding wire 50401 and the second composite grinding wire 50402 are 0.1 mm, and both are composed of a composite of polyamide and carbon nanotubes. Both the first composite grinding wire 50401 and the second composite grinding wire 50402 combine the toughness of polyamide and the high strength of carbon nanotubes, enabling them to maintain good grinding performance during the polishing process and reducing the fracture probability of the first composite grinding wire 50401 and the second composite grinding wire 50402 under high pressure, thereby improving the grinding efficiency. The addition of carbon nanotubes increases the strength of the first composite grinding wire 50401 and the second composite grinding wire 50402, making them less prone to deformation during the polishing process, capable of maintaining a stable shape and size, and ensuring uniform and smooth polishing quality.

[0033] Example 2, as Figure 8 and Figure 9 As shown, a fixing plate 13 is fixedly installed on the rectangular frame 2. A first injection integration head 14 for injecting polishing liquid is provided on the fixing plate 13. A second injection integration head 15 for injecting polishing liquid is provided inside the housing 501. The first injection integration head 14 is located above the turning channel 11 and faces the gap between the polishing part of the polishing assembly 5 and the hub bearing. The arrangement of the first injection integration head 14 can continuously supply polishing liquid to the hub bearing, forming an effective polishing medium between the hub bearing and the polishing assembly 5, improving the polishing speed and uniformity. The second injection integration head 15 is located directly above the polishing wheel 503 and is used to continuously soak the polishing assembly 5 to ensure that the polishing assembly 5 is always in a sufficient lubricated state during the polishing process, thereby avoiding wear and damage caused by dry friction.

[0034] As Figure 8 and Figure 9 As shown, a baffle 16 is fixedly installed on one side of the housing 501. The baffle 16 is of an arc structure and is located on one side of the second injection integration head 15. The baffle 16 is used to prevent the polishing liquid dripping on the polishing wheel 503 from splashing.

[0035] Example 3, as Figure 2 and Figure 9As shown in the figure, the upper surface of the machine tool base 1 is provided with a placement groove 17 and a placement table 18. Inside the placement groove 17 of the machine tool base 1, there is a collection box 19. The top of the collection box 19 is open, and the collection box 19 is located directly below the first spraying integration head 14. The waste liquid generated during polishing, mixed with the polishing liquid, falls into the interior of the collection box 19 under the action of gravity. Through the purification component 20 arranged in the collection box 19, it is used to remove impurities in the waste liquid, and the preliminarily purified polishing liquid enters the magnetic filter 22 arranged on the placement table 18 through the first pipeline 21 at the bottom of the collection box 19. The magnetic filter 22 is used to filter magnetic particles in the polishing liquid. On the placement table 18, there is a mixing box 23 and a polishing liquid storage box 24 for storing pure polishing liquid. Among them, the bottom output end of the magnetic filter 22 is connected to one input end of the mixing box 23 through the second pipeline 25, for guiding the polished liquid after purification treatment into the interior of the mixing box 23, and the top output end of the polishing liquid storage box 24 is connected to the other input end of the mixing box 23 through the third pipeline 26, for guiding the pure polishing liquid into the interior of the mixing box 23, and using the ultrasonic mixer arranged in the mixing box 23 for mixing, so that the pure polishing liquid and the polished liquid after purification treatment are mixed in a certain proportion, and the mixed polishing liquid is introduced into the interior of the first spraying integration head 14 through the fourth pipeline 27 arranged on the mixing box 23, for guiding the mixed polishing liquid into the gap between the polishing part of the polishing component 5 and the hub bearing. The top output end of the polishing liquid storage box 24 is connected to the second spraying integration head 15 through the fifth pipeline 28, and the pure polishing liquid will enter the interior of the second spraying integration head 15 through the fifth pipeline 28.

[0036] As Figure 9 shown, after the waste liquid generated during the polishing process is mixed with the polishing liquid, it is collected by the placement groove 17 provided on the upper surface of the machine tool base 1. The waste liquid flows into the collection box 19 located in the placement groove 17 under the action of gravity.

[0037] As Figure 9 shown, a purification component 20 is arranged inside the collection box 19, mainly used to remove impurities in the waste liquid. This step ensures the quality of the polishing liquid for subsequent use.

[0038] As Figure 9 shown, the preliminarily purified polishing liquid enters the magnetic filter 22 through the first pipeline 21. The function of the magnetic filter 22 is to remove magnetic particles in the liquid, further improving the cleanliness of the polishing liquid.

[0039] As Figure 9 shown, the purified polishing liquid flows from the magnetic filter 22 into the mixing box 23 through the second pipeline 25, and the pure polishing liquid flows into the mixing box 23 from the storage box through the third pipeline 26. Through the ultrasonic mixer in the mixing box 23, it is ensured that the two polishing liquids are fully mixed in a predetermined proportion.

[0040] As Figure 9 shown, the mixed polishing liquid is transported through the fourth pipeline 27 to the first injection integration head 14 for use in the polishing assembly 5. Meanwhile, the pure polishing liquid is also transported through the fifth pipeline 28 to the second injection integration head 15 for further requirements.

[0041] As Figure 9 shown, in this way, the system realizes the recycling, purification, filtration and reuse of the polishing liquid, improves the efficiency of the polishing process, and reduces resource waste. Meanwhile, the whole process also ensures the quality of the polishing liquid, thus improving the polishing effect.

[0042] As Figure 9 shown, an on-line rheometer for detecting viscosity change and an IPC-OES detector for detecting metal ion concentration are provided inside the mixing tank 23. Through the on-line rheometer and the IPC-OES detector, the operator can monitor the viscosity and metal ion concentration of the mixture in real time, so that the formulation or process parameters can be quickly reacted and adjusted to ensure a stable production process. Obtaining the data of viscosity and metal ion concentration in time helps to identify potential quality problems, so as to confirm whether the finally mixed polishing liquid meets the quality requirements.

[0043] As Figure 9 and Figure 10 shown, specifically, the purification component 20 successively includes a filter element layer 2001, a nickel-titanium alloy filter screen 2002 with four layers of mesh holes decreasing in gradient and the mesh holes of each layer arranged in a staggered manner, and an adsorption layer 2003 from top to bottom.

[0044] As Figure 10 shown, the material of the filter element layer 2001 is polypropylene, and adsorption fibers 2004 with a Y-shaped structure are evenly arranged on the upper surface of the filter element layer 2001. The adsorption fibers 2004 with a Y-shaped structure can increase the contact area of the filter element surface. This design helps to increase the residence time of the liquid or gas on the filter element surface, so as to more effectively capture and adsorb pollutants. Activated carbon adsorption blocks 2005 are arranged in the gaps between the adsorption fibers 2004. Activated carbon has a very high specific surface area and good adsorption performance, and can effectively remove organic pollutants in the polishing liquid; the design of the Y-shaped adsorption fibers 2004 and the activated carbon adsorption blocks 2005 increases the complexity of the filter layer, effectively improving the capture efficiency of particulate matter, and can not only filter out large particulate matter, but also adsorb small particles and pollutants.

[0045] As Figure 10As shown, the mesh diameter of the nickel-titanium alloy filter screen 2002 decreases gradually from 200 μm to 20 μm, and the mesh holes of each layer are arranged staggeredly. Moreover, gill-shaped grid pieces 2006 are evenly arranged on the upper and lower surfaces of the nickel-titanium alloy filter screen 2002, which are used to intercept iron powders of different particle sizes in stages, avoid single-layer blockage, and increase the filtration flux by 55%. Combined with the vibration member 2007 arranged between the nickel-titanium alloy filter screen 2002 and the adsorption layer 2003, the self-cleaning effect of the grid pieces 2006 is realized by imitating the swinging of fish gills.

[0046] As Figure 10 shown, specifically, the vibration member 2007 includes a water-permeable plate, and a number of aerators are arranged on the water-permeable plate. The bubbles generated by the aerators suspend upward in the polishing liquid, disturbing the grid pieces 2006 to swing, and using the blasting force generated by the bubble rupture to realize the self-cleaning effect on the grid pieces 2006.

[0047] As Figure 10 shown, a number of silica gel bionic tentacles 2008 are arranged on the upper surface of the adsorption layer 2003. The number of silica gel bionic tentacles 2008 is distributed in an array on the upper surface of the adsorption layer 2003, and piezoelectric fiber sensors 2009 are embedded on the surface of the silica gel bionic tentacles 2008, and vacuum microchannels capable of generating negative pressure are arranged inside the silica gel bionic tentacles 2008; actively detect the iron powder deposition area, and remove the residues in dead corners through negative pressure adsorption, and the cleaning efficiency of complex curved surfaces is increased by 80%.

[0048] As Figure 10 shown, specifically, the piezoelectric fiber sensors 2009 embedded in the silica gel bionic tentacles 2008 can sense and monitor changes in the surrounding environment, such as pressure and surface conditions. The piezoelectric fiber sensors 2009 can provide real-time feedback on the contact situation between the tentacles and the surface, so as to adjust the movement of the tentacles and the intensity of vacuum adsorption. The silica gel tentacles are provided with vacuum microchannels inside, which can generate negative pressure through a mechanism. This negative pressure effect can effectively adsorb iron powders and other particulate matters, and at the same time help to remove dead corners and areas that are difficult to reach. Through negative pressure adsorption, the cleaning efficiency is greatly improved.

[0049] As Figure 10 shown, through the combination of the flexible structure of the silica gel tentacles and negative pressure adsorption, it is possible to effectively detect and remove iron powder deposition on complex surfaces, especially those dead corner areas that cannot be reached by traditional methods, and the cleaning efficiency is increased by 80%.

[0050] The polishing process of the hub bearing of this automatic grinding machine includes the following polishing steps: S1: Soak the wheel body 50301; By opening the electronic valve provided on the fifth pipeline 28, pure polishing liquid is introduced into the second injection integration head 15, and the pure polishing liquid is introduced onto the top of the wheel body 50301 by means of the second injection head. Under the action of the gravity of the fluid, the pure polishing liquid will gradually diffuse from top to bottom and from the middle to both sides along the radial surface of the wheel body 50301, quickly fill the strip-shaped grooves 50303 of "imitating human pores", and continuously infiltrate and fill the micro storage grooves 50404 on the polishing surface 50308. After the pure polishing liquid completely covers the surface of the wheel body 50301, it is left standing for 15 - 20 minutes to obtain the infiltrated wheel body 50301; S2: Feeding; The hub bearings arranged in rows roll sequentially along the blanking channel 10 in the feeding trough 8 to the output end of the feeding trough 8; a turning channel 11 is provided at the output end of the feeding trough 8. The hub bearings at the output end of the blanking channel 10 are pushed out of the blanking channel 10 by the telescopic pusher 12 and enter the turning channel 11; subsequently, under the action of gravity, the subsequent hub bearings automatically make up the position to ensure that the output end of the blanking channel 10 continuously maintains product supply; S3: Clamping and polishing; The clamping workpiece in the turning channel 11 clamps and fixes the inner ring of the pushed-in hub bearing to prevent its displacement in the subsequent processes, and at this time, the outer ring of the hub bearing faces the polishing assembly 5; the polishing assembly 5 performs surface polishing on the outer ring of the clamped and fixed hub bearing and completes the surface treatment of the hub bearing based on the polishing liquid in the first injection integration head 14; S4: Discharging; After polishing, the clamping mechanism releases the hub bearing, and it naturally falls into the discharging trough 9 located below the turning channel 11 under the action of gravity; the discharging trough 9 is designed to be inclined downward to assist the polished parts to be smoothly exported to the discharging port 7; S5: Recycling and reuse of polishing liquid The waste liquid generated during the polishing process is mixed with the polishing liquid and flows into the collection box 19 located in the placement groove 17 under the action of gravity; a purification component 20 is provided inside the collection box 19, mainly used to remove impurities in the waste liquid; this step ensures the quality of the polishing liquid used subsequently; The preliminarily purified polishing liquid enters the magnetic filter 22 through the first pipeline 21; it is used to remove magnetic particles in the liquid to further improve the cleanliness of the polishing liquid; the purified polishing liquid flows from the magnetic filter 22 into the mixing box 23 through the second pipeline 25, and the pure polishing liquid flows into the mixing box 23 from the storage box through the third pipeline 26; through the ultrasonic mixer in the mixing box 23, it is ensured that the two polishing liquids are fully mixed in a predetermined proportion; the mixed polishing liquid is transported to the first injection integration head 14 through the fourth pipeline 27.

[0051] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. An automatic grinding machine, comprising a machine tool base (1), characterized in that: A polishing component (5) is provided on the machine tool base (1). An installation groove (17) and a placement table (18) are provided on the upper surface of the machine tool base (1). A collection box (19) is provided inside the installation groove (17) of the machine tool base (1). The top of the collection box (19) is open, and the collection box (19) is located directly below the first injection integration head (14). The waste liquid generated during polishing, mixed with the polishing liquid, falls into the interior of the collection box (19) under the action of gravity. The purification component (20) provided in the collection box (19) is used to remove impurities in the waste liquid, and the preliminarily purified polishing liquid enters the magnetic filter (22) provided on the placement table (18) and used to filter magnetic particles in the polishing liquid through the first pipeline (21) at the bottom of the collection box (19). A mixing box (23) and a polishing liquid storage box (24) for storing pure polishing liquid are provided on the placement table (18). Among them, the bottom output end of the magnetic filter (22) is connected to an input end of the mixing box (23) through a second pipeline (25) for guiding the polished polishing liquid into the interior of the mixing box (23), and the top output end of the polishing liquid storage box (24) is connected to another input end of the mixing box (23) through a third pipeline (26) for guiding pure polishing liquid to the interior of the mixing box (23), and the ultrasonic mixer provided in the mixing box (23) is used for mixing, so that the pure polishing liquid and the polished polishing liquid are mixed in a certain proportion.

2. The automatic grinding machine according to claim 1, wherein: A rectangular frame (2) is provided on the upper surface of the machine tool base (1). Explosion-proof glass (3) is provided on the four sides and the top surface of the rectangular frame (2). An inlet (6) and an outlet (7) are provided on the explosion-proof glass (3) on one side of the rectangular frame (2) from top to bottom in sequence. A feeding groove (8) is provided in the inlet (6) of the explosion-proof glass (3), and a discharging groove (9) is provided in the outlet (7) of the explosion-proof glass (3). A blanking channel (10) and a turning channel (11) are provided inside the feeding groove (8). Among them, the turning channel (11) is located at the output end position of the blanking channel (10). A number of row-arranged hub bearings roll along the blanking channel (10) to its output end position, and through the retractable pushing member (12) in the turning channel (11), the hub bearing located at the output end of the blanking channel (10) is pushed into the turning channel (11), and the subsequent hub bearings will make up the position at the output end of the blanking channel (10) under the action of gravity. The turning channel (11) is used to clamp the workpiece and fix the inner ring of the pushed-out hub bearing. At this time, the outer ring of the hub bearing faces the polishing part of the polishing component (5), and the polishing component (5) is used to polish the outer ring of the hub bearing. The discharging groove (9) is directly below the turning channel (11). By loosening the clamped workpiece, the polished hub bearing naturally falls into the discharging channel in the discharging groove (9), and the discharging groove (9) slopes downward towards the outlet (7) for guiding the polished hub bearing.

3. The automatic grinding machine according to claim 2, wherein: The polishing component (5) includes a housing (501) disposed inside the machine tool base (1). A driving motor (502) is provided on the housing (501). The output end of the driving motor (502) is connected to a driving rotating shaft. The driving rotating shaft penetrates through the interior of the housing (501) and is connected to a polishing wheel (503). The polishing wheel (503) rolls in the cavity inside the housing (501).

4. The automatic grinding machine according to claim 3, wherein: The polishing wheel (503) includes a disc-shaped wheel body (50301). A concave portion (50302) matching the outer ring size of the hub bearing is formed by concave inward the radial surface of the wheel body (50301). A plurality of strip-shaped grooves (50303) for temporarily storing polishing liquid are provided on the concave portion (50302) of the wheel body (50301). The strip-shaped grooves (50303) are arranged at equal angles around the central axis of the wheel body (50301).

5. The automatic grinding machine according to claim 4, wherein: The strip-shaped grooves (50303) are sequentially formed with an inner section (50304), a middle section (50305), and an outer section (50306) from inside to outside. Among them, the inner section (50304) of the strip-shaped groove (50303) is eccentrically arranged with the center line of the wheel body (50301). The cross-section of the middle section (50305) is a circular structure, and the cross-sectional dimension of the middle section (50305) is larger than that of the inner section (50304) and the outer section (50306). The inner wall of the outer section (50306) of the strip-shaped groove (50303) is an arc structure, and an overflow port (50307) is formed at the concave portion (50302) of the wheel body (50301) for the outer section (50306) of the strip-shaped groove (50303).

6. The automatic grinding machine according to claim 5, characterized in that: The plurality of strip-shaped grooves (50303) arranged at equal angles divide the concave portion (50302) of the wheel body (50301) into a plurality of polishing solid parts. A polishing surface (50308) is formed on the polishing solid of the wheel body (50301). A plurality of composite layers (504) are provided on the polishing surface (50308). The composite layer (504) includes a plurality of first composite grinding wires (50401) and second composite grinding wires (50402). The inner ends of the plurality of first composite grinding wires (50401) are connected and diverge at the outer section (50306). A plurality of spherical matrix points (50403) are arranged along the length direction of the first composite grinding wire (50401). The spherical rectangular points between adjacent first composite grinding wires (50401) are connected by second composite grinding wires (50402). The second composite grinding wire (50402) is an arc structure. The first composite grinding wire (50401), the spherical matrix points (50403), and the second composite grinding wire (50402) form a micro bionic spider web structure.

7. The automatic grinding machine according to claim 6, wherein: A micro storage tank (50404) for storing polishing liquid is formed between adjacent first composite grinding wires (50401) and adjacent second composite grinding wires (50402).

8. The automatic grinding machine according to claim 3, wherein: A fixing plate (13) is fixedly installed on the rectangular frame (2). A first injection integration head (14) for injecting polishing liquid is provided on the fixing plate (13). A second injection integration head (15) for injecting polishing liquid is arranged inside the housing (501). The first injection integration head (14) is located above the turning channel (11) and faces the gap between the polishing part of the polishing assembly (5) and the hub bearing. The second injection integration head (15) is located directly above the polishing assembly (5).

9. The automatic grinding machine according to claim 8, wherein: The mixed polishing liquid is introduced into the interior of the first injection integration head (14) through a fourth pipeline (27) provided on the mixing tank (23) for introducing the mixed polishing liquid into the gap between the polishing part of the polishing assembly (5) and the hub bearing. The top output end of the polishing liquid storage tank (24) is connected to the second injection integration head (15) through a fifth pipeline (28), and the pure polishing liquid will enter the interior of the second injection integration head (15) through the fifth pipeline (28).

10. A polishing process for the hub bearing of an automatic grinding machine as described in any one of claims 1-9, characterized in that: Its polishing steps include: S1: Soak the wheel body (50301); By opening the electronic valve provided on the fifth pipeline (28), the pure polishing liquid is introduced into the second injection integration head (15), and the pure polishing liquid is introduced to the top of the wheel body (50301) by means of the second injection head. Under the action of the gravity of the fluid, the pure polishing liquid will gradually spread from top to bottom and from the middle to both sides along the radial surface of the wheel body (50301), and quickly fill the strip-shaped grooves (50303) of "imitating human pores", and continuously soak and fill the micro storage grooves (50404) on the polishing surface (50308). After the pure polishing liquid completely covers the surface of the wheel body (50301), it is left standing for 15 - 20 minutes to obtain the soaked wheel body (50301); S2: Feeding; The row - arranged hub bearings roll successively along the blanking channel (10) in the feeding groove (8) to the output end of the feeding groove (8); a turning channel (11) is provided at the output end of the feeding groove (8). The hub bearing at the output end of the blanking channel (10) is pushed out of the blanking channel (10) by a telescopic pusher (12) and enters the turning channel (11); subsequently, under the action of gravity, the subsequent hub bearings automatically make up the position to ensure that the output end of the blanking channel (10) continuously maintains product supply; S3: Clamping and polishing; The clamping workpiece in the turning channel (11) clamps and fixes the inner ring of the pushed - in hub bearing to prevent its displacement in the subsequent processes, and at this time, the outer ring of the hub bearing faces the polishing assembly (5); the polishing assembly (5) performs surface polishing on the outer ring of the clamped and fixed hub bearing and completes the surface treatment of the hub bearing based on the polishing liquid in the first injection integration head (14); S4: Discharging; After polishing, the clamping mechanism releases the hub bearing, and it naturally falls into the discharging groove (9) located below the turning channel (11) under the action of gravity; the discharging groove (9) is designed to be inclined downward to assist the polished parts to be smoothly exported to the discharging port (7); S5: Recycling and reusing the polishing liquid After the waste liquid generated during the polishing process is mixed with the polishing liquid, it flows into the collection box (19) located in the placement groove (17) under the action of gravity; a purification component (20) is arranged inside the collection box (19), mainly used to remove impurities in the waste liquid; this step ensures the quality of the polishing liquid used subsequently; The preliminarily purified polishing liquid enters the magnetic filter (22) through the first pipeline (21); it is used to remove magnetic particles in the liquid and further improve the cleanliness of the polishing liquid; the purified polishing liquid flows into the mixing box (23) through the second pipeline (25) from the magnetic filter (22), and the pure polishing liquid flows into the mixing box (23) through the third pipeline (26) from the storage box; the ultrasonic mixer in the mixing box (23) is used to ensure that the two polishing liquids are fully mixed according to a predetermined ratio; the mixed polishing liquid is transported to the first injection integration head (14) through the fourth pipeline (27).

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