A polishing barrel mechanism for curved glass and a polishing method thereof

Abstract

This invention relates to a polishing barrel mechanism for curved glass, comprising a barrel body and electromagnetic units. Multiple electromagnetic units are disposed on the outer wall of the barrel body, and the barrel body is also filled with magnetorheological polishing fluid. A curved glass piece is placed inside the barrel body and fixed by an adsorption fixture. The adsorption fixture has a magnetically conductive backplate. When the curved glass piece is placed inside the barrel body, the magnetically conductive backplate of the adsorption fixture is close to the wall of the barrel body, and the front of the adsorption fixture holding the curved glass piece faces the center of the barrel body. When the polishing mechanism polishes a certain part of the curved glass piece, the corresponding electromagnetic unit is activated, causing the magnetically conductive backplate to become magnetic, thereby adsorbing a large amount of magnetic polishing material from the magnetorheological polishing fluid at the polishing location. A polishing method for the polishing barrel is also disclosed. The beneficial effects achieved by this invention are: good polishing effect and high polishing efficiency.

Description

Technical Field

[0001] This invention relates to the field of 3D curved glass processing technology, and in particular to a polishing barrel mechanism and polishing method for curved glass. Background Technology

[0002] In-vehicle display panels include central control display panels, instrument display panels, head-up displays, electronic rearview mirror displays, and rear-seat entertainment displays.

[0003] In recent years, the automotive display panel market has shown a trend towards larger screens (integrating the central control display panel, instrument display panel, etc. into one unit). This has led to the emergence of compatible 3D glass panels (also known as 3D curved glass or curved glass components). Because 3D glass panels are thin, fingerprint-resistant, anti-glare, and scratch-resistant; they allow for bending and folding of the automotive display surface while maintaining high-quality display even when the edges are bent, achieving seamless integration of three-dimensional surfaces in uneven dashboard areas; and they increase the freedom of design and functional integration, further providing human-machine interface functions and entertainment carriers. Therefore, they have become a major trend in the future development of automotive displays.

[0004] Current 3D curved glass is formed through mold molding. During the molding process, the first few batches of 3D curved glass produced after the mold is cleaned have good quality (no small dents). However, after a period of production, a small amount of material adheres to the mold during demolding, leading to a decrease in quality (the surface is not smooth enough). Currently, many companies on the market use molded products directly on automobiles without further processing; while this may meet basic requirements, it appears somewhat rough for some high-standard automobiles. Of course, some companies do polish the products before installing them on automobiles.

[0005] Currently, the polishing and grinding of automotive display panels is very simple, using methods similar to those used for polishing metal. This includes methods such as using coarse wax, grinding machines, and coarse yellow sponge discs, either manually or with the aid of very simple mechanical structures. This method is inefficient and lacks quality control, resulting in a less than ideal pass rate.

[0006] To address this issue, our company has developed an automated polishing process for automotive 3D curved glass (replacing current rudimentary processing methods) to improve production efficiency and control polishing quality. This polishing equipment involves gripping the curved glass component and placing it in an auxiliary polishing tank for polishing.

[0007] To fully protect the entire system, multiple patents are used to protect the key components of the fully automated polishing equipment. This solution specifically protects the "auxiliary polishing barrel" component. Summary of the Invention

[0008] The purpose of this invention is to overcome the shortcomings of the prior art and provide a polishing barrel mechanism for curved glass, which solves the problem that the curved surface of curved glass is not easy to polish, and can perform good polishing on any position of curved glass as needed.

[0009] The field of metal polishing is relatively mature; however, the polishing of curved glass components, especially the newly developed polishing of large curved 3D automotive glass, is not yet mature enough. Current polishing processes for 3D curved automotive glass still borrow the approach from metal polishing: first, the curved glass component is fixed in place, and then the polishing mechanism contacts and polishes it. The polishing effect can only be improved by increasing polishing time, changing polishing materials, and altering polishing pressure. However, polishing pressure is limited; too high a pressure can easily cause the curved glass component to crack. Increasing polishing time only slightly improves the quality, without fundamentally changing the surface finish. Even changing the polishing material only provides a limited improvement in polishing quality. Therefore, a specialized device for large curved glass is needed to develop a new polishing method that can significantly improve polishing quality.

[0010] (First aspect)

[0011] The objective of this invention is achieved through the following technical solution: a polishing barrel mechanism for curved glass, comprising a barrel body and an electromagnetic unit;

[0012] The outer wall of the barrel is provided with multiple electromagnetic units, and the barrel is also filled with magnetorheological polishing liquid.

[0013] The barrel contains a curved glass component, which is fixed by an adsorption fixture; the adsorption fixture has a magnetic back plate.

[0014] When the curved glass piece is placed inside the barrel, the magnetic back plate of the adsorption fixture is close to the wall of the barrel, and the front of the curved glass piece fixed by the adsorption fixture faces the center of the barrel.

[0015] When the polishing mechanism polishes a part of a curved glass piece: the electromagnetic unit at the corresponding position is activated, and the electromagnetic unit makes the magnetic back plate magnetic, thereby attracting a large amount of magnetic polishing material from the magnetorheological polishing fluid at the polishing position.

[0016] It should be noted that magnetorheological polishing slurry is a polishing abrasive with magnetic particles suspended in a liquid.

[0017] In this polishing process, when a specific area needs focused polishing (e.g., a curved surface): the electromagnetic unit at that location is activated. This unit generates a magnetic field, which in turn magnetizes the magnetic backplate, causing the magnetic polishing abrasive in the magnetorheological polishing slurry to concentrate on the curved surface. This allows for targeted polishing.

[0018] In an advantageous extension, an adsorption fixture is designed. The adsorption fixture includes a support component; the support component includes a magnetic backplate, a non-magnetic contouring component, and a magnetic contouring block; the non-magnetic contouring component is fixedly locked to the front of the magnetic backplate, and its front surface is a contoured surface that fits snugly against the curved glass component; the non-magnetic contouring component has a through-hole groove at the corresponding bend in the curved glass component, and a magnetic contouring block is placed within the through-hole groove, which is also locked and fixed to the magnetic backplate; the front surface of the magnetic contouring block is a contoured surface that fits snugly against the bend in the curved glass component. When the corresponding electromagnetic unit is activated, the magnetic field at the bend in the curved glass component is made greater than the magnetic field at other locations.

[0019] Because the front of the magnetic backplate has a non-magnetic contour piece, and the front of the non-magnetic contour piece holds a curved glass component, when the electromagnetic unit is energized, the magnetic backplate is magnetized, causing a large amount of magnetic polishing material to accumulate on the front of the curved glass component, thus improving the polishing effect. Furthermore, because the non-magnetic contour piece also contains a magnetic contour block (which is also magnetized by the energized electromagnetic unit), and this magnetic contour block is located at the curved surface of the curved glass component, a large amount of magnetic polishing material will accumulate at the curved surface of the curved glass component, allowing for focused polishing.

[0020] Furthermore, the pneumatic suction cups were designed. Multiple pneumatic suction cups are also provided on the front side of the non-magnetic contouring part. When the pneumatic suction cups are installed on the front side of the non-magnetic contouring part: first, the fixing rod of the pneumatic suction cup is installed; then, a flexible layer is attached to the front side of the non-magnetic contouring part; and finally, the rubber disc of the pneumatic suction cup is installed.

[0021] The purpose of the flexible layer is to ensure that the back side (not the surface being polished) of the curved glass part adheres to the flexible layer, preventing magnetic polishing material from accumulating on the back side of the curved glass part. When the pneumatic suction cup draws a vacuum, the rubber disc will pull the curved glass part back, allowing the curved glass part to fully adhere to the flexible layer, thus preventing magnetorheological polishing material from accumulating on the surface of the curved glass part that has been suctioned.

[0022] In an advantageous extension, when the adsorption fixture fixes the curved glass parts, multiple curved glass parts are vertically suspended along the circumference of the circle; multiple rows of electromagnetic units are arranged on the outer wall of the barrel, each row of electromagnetic units corresponding to one curved glass part. This allows for the polishing of multiple workpieces at once.

[0023] Furthermore, the shape of the barrel was designed. The barrel is a multi-faceted prism; each of its prisms has a row of electromagnetic units on its outer wall, and a corresponding curved glass element on the inner wall of each prism.

[0024] Furthermore, the installation of the electromagnetic unit was designed. Multiple annular strips are fitted onto the outer wall of the cylinder from top to bottom, and the electromagnetic unit is fixed to the corresponding annular strips.

[0025] In an advantageous extension, ultrasonic transducers are also used to remove impurities after polishing. The walls of the barrel are further recessed into triangular grooves on both sides corresponding to the curved glass workpiece; multiple ultrasonic transducers are arranged on the outer walls of these triangular grooves. During polishing, the polishing material is removed by the ultrasonic transducers.

[0026] In one advantageous extension, the temperature of the magnetorheological polishing fluid inside the barrel is carefully controlled. A heating element is also installed at the bottom of the barrel.

[0027] (Second aspect)

[0028] A polishing method for a polishing barrel mechanism for curved glass, wherein during polishing:

[0029] a. Conventional surface treatment;

[0030] When the electromagnetic unit controlling the polishing barrel III at a certain height is energized, a large amount of magnetic polishing material is gathered on the curved glass piece at that height.

[0031] Chemical treatment: the aggregated polishing material itself can corrode curved glass parts, thereby performing chemical polishing; during chemical treatment, the temperature conditions of chemical corrosion are controlled by heating tubes;

[0032] The physical processing involves the agglomerated magnetic polishing material grinding the curved glass part under the pressure of the polishing mechanism; and during the physical processing, each adjacent polishing ball rotates in a different direction.

[0033] During physical processing, the polishing mechanism wobbles slightly, and the contact gap between the polishing ball and the curved glass part changes. Under the action of the ultrasonic transducer and the polishing ball, the material that is ground off and the polishing material in the original gap will fall off and be thrown out. When the polishing material is thrown out, it surges in the polishing barrel III under the action of the adjacent polishing balls rotating in different directions without sinking to the bottom. When the ground off material is thrown out, it will eventually sink to the bottom after surging for a certain period of time because it is not magnetic.

[0034] By gradually controlling the energization of electromagnetic units at different heights, the curved glass parts at the corresponding heights are polished in a concentrated manner.

[0035] b. Unconventional surface treatment;

[0036] When the corresponding electromagnetic unit is energized, the presence of the magnetically conductive contour block allows the polishing material to be concentrated on the curved surface more effectively than on a conventional surface, thus achieving better polishing of the curved surface.

[0037] It should be noted that in this solution, the polishing material particles themselves contain both physical polishing components and chemical polishing components. Preferably, for example, during preparation, physical polishing powder (including magnetically conductive powder) and chemical polishing powder are mixed, then fired into bricks, and finally crushed, appropriately ground, and screened to obtain polishing material with suitable particle size.

[0038] The present invention has the following advantages:

[0039] (1) By controlling the opening / closing of the corresponding electromagnetic unit, the position of the magnetic polishing material in the magnetorheological polishing fluid can be changed; and by adsorbing the magnetic back plate and magnetic guide block in the tooling, the magnetic polishing material can be gathered at the curved surface of the curved glass, thereby improving the polishing effect and polishing efficiency.

[0040] The magnetic polishing material accumulates at curved surfaces, improving the polishing effect because: ① The increased amount of polishing material increases friction when the polishing mechanism contacts the curved glass, thus improving the polishing effect and efficiency; ② Furthermore, the presence of the magnetic field increases the pressure of the polishing material on the curved glass, further enhancing the polishing effect when the polishing mechanism sweeps the material; ③ In this scheme, the magnetorheological liquid is concentrated at the key polishing locations via a magnetic field, increasing the chemical reaction effect. The reactants are then carried away by the polishing balls, and the process is repeated in a continuous cycle.

[0041] (2) After the magnetic back plate is magnetized, the entire curved glass part is located in its magnetic field, so the entire curved glass part can be polished; most importantly, the magnetic field is transmitted to the part of the workpiece that needs to be polished through the magnetic direction block via the magnetic back plate, thereby increasing the local magnetization and improving the polishing effect of the part.

[0042] At the same time, due to the presence of the magnetically conductive contour block, more polishing material is concentrated at the location of the magnetically conductive contour block (such as at curved surfaces), thus enabling focused polishing of a certain location.

[0043] (3) The ultrasonic transducer can remove the polished material in a timely manner;

[0044] Specifically, during polishing, the polishing mechanism rotates, and its flexible contact point (such as a sponge) comes into contact with the front of the curved glass piece. This is equivalent to rubbing the curved glass piece with a sponge. Due to the presence of a large amount of polishing material, the polishing effect can be significantly improved. After polishing is completed, the material that was ground off the curved glass piece (referred to as residual material) may still be attached to the front of the curved glass piece. When the sponge rubs the curved glass piece again, this residual material and polishing material together will form a large mud powder clump, which may lead to excessive friction and make it impossible to control the quality of polishing.

[0045] By using an ultrasonic transducer, after the sponge has rubbed the polishing material repeatedly, the residual material in the polishing material can be removed in time, ensuring the cleanliness of the polishing material and thus controlling the polishing quality. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the structure of the electromagnetic unit installed on the barrel in this invention;

[0047] Figure 2 This is a schematic diagram of the structure of the present invention;

[0048] Figure 3 This is a schematic diagram of the adsorption fixture.

[0049] In the diagram: 1-Bearing component, 5-Magnetic backplate, 6-Non-magnetic contouring component, 7-Magnetic contouring block, 10-Adsorption fixture;

[0050] 21-Barrel body, 22-Electromagnetic unit, 23-Annular strip, 24-Ultrasonic transducer, 25-Heating tube. Detailed Implementation

[0051] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0052] (Example 1)

[0053] like Figures 1-3 As shown, a polishing barrel mechanism for curved glass includes a barrel body 21 and an electromagnetic unit 22; the outer wall of the barrel body 21 is provided with a plurality of electromagnetic units 22, and the barrel body 21 is also filled with magnetorheological polishing fluid; a curved glass piece is placed inside the barrel body 21, and the curved glass piece is fixed by an adsorption fixture 10; the adsorption fixture 10 has a magnetic back plate 5.

[0054] When the curved glass piece is placed inside the barrel 21, the magnetic back plate 5 of the adsorption fixture 10 is close to the wall of the barrel 21, and the front of the curved glass piece is fixed to the center of the barrel 21.

[0055] When the polishing mechanism polishes a certain part of the curved glass part: the electromagnetic unit 22 at the corresponding position is turned on, the electromagnetic unit 22 makes the magnetic back plate magnetic, thereby adsorbing a large amount of magnetic polishing material in the magnetorheological polishing fluid at the polishing position.

[0056] It should be noted that magnetorheological polishing slurry is a polishing abrasive with magnetic properties suspended in a liquid. In this scheme, the polishing particles themselves contain both physical polishing components and chemical polishing components. Preferably, for example, during preparation, physical polishing powder (including magnetically conductive powder) and chemical polishing powder are mixed, then fired into bricks, and finally crushed, appropriately ground, and screened to obtain polishing particles of suitable size.

[0057] In this polishing process, when a specific area needs focused polishing (e.g., a curved surface): the electromagnetic unit 22 at that location is activated. The electromagnetic unit 22 generates a magnetic field, which in turn magnetizes the magnetic backplate 5, causing the magnetic polishing abrasive in the magnetorheological polishing fluid to accumulate on the curved surface. This allows for focused polishing.

[0058] In this embodiment, the adsorption fixture 10 was designed. The adsorption fixture 10 includes a support component 1; the support component 1 includes a magnetic back plate 5, a non-magnetic contouring component 6, and a magnetic contouring block 7; the non-magnetic contouring component 6 is fixedly locked to the front side of the magnetic back plate 5, and the front side of the non-magnetic contouring component 6 is a contouring surface that fits the curved glass component; the non-magnetic contouring component 6 has a through-hole groove at the corresponding bend of the curved glass component, and the magnetic contouring block 7 is placed in the through-hole groove, and the magnetic contouring block 7 is also locked and fixed to the magnetic back plate 5; the front side of the magnetic contouring block 7 is a contouring surface that fits the bend of the curved glass component. When the corresponding electromagnetic unit 22 is turned on, the magnetic field at the bend of the curved glass component is made greater than the magnetic field at other locations.

[0059] Since the front of the magnetic backplate 5 has a non-magnetic contour piece 7, and the front of the non-magnetic contour piece 7 is on a curved glass piece, when the electromagnetic unit 22 is energized, the magnetic backplate 5 will be magnetized, causing a large amount of magnetic polishing material to accumulate on the front of the curved glass piece, thereby improving the polishing effect. In addition, since the non-magnetic contour piece 7 also has a magnetic contour block 7 (which will also be magnetized by the energized electromagnetic unit 22), and the magnetic contour block 7 is located at the curved surface of the curved glass piece, a large amount of magnetic polishing material will accumulate at the curved surface of the curved glass piece, thus enabling focused polishing.

[0060] Furthermore, the design of the pneumatic suction cups was carried out. Multiple pneumatic suction cups are also provided on the front side of the non-magnetic contouring part 6. When the pneumatic suction cups are installed on the front side of the non-magnetic contouring part: first, the fixing rod of the pneumatic suction cup is installed, then a flexible layer is attached to the front side of the non-magnetic contouring part 6, and then the rubber plate of the pneumatic suction cup is installed.

[0061] It should be noted that corresponding pneumatic suction cups can be provided on both the non-magnetic contouring part 6 and the magnetic contouring part 7. Corresponding channels can be provided on both, and the pipe for activating the suction cup is led out from the channel.

[0062] The purpose of the flexible layer is to ensure that the back side (not the surface being polished) of the curved glass part adheres to the flexible layer, preventing magnetic polishing material from accumulating on the back side of the curved glass part. When the pneumatic suction cup draws a vacuum, the rubber disc will pull the curved glass part back, allowing the curved glass part to fully adhere to the flexible layer, thus preventing magnetorheological polishing material from accumulating on the surface of the curved glass part that has been suctioned.

[0063] In this embodiment, when the adsorption fixture 10 fixes the curved glass parts, multiple curved glass parts are vertically suspended along the circumference of the circle; multiple rows of electromagnetic units 22 are provided on the outer wall of the barrel 21, each row of electromagnetic units 22 corresponding to one curved glass part. Multiple workpieces can be polished at one time.

[0064] Furthermore, the shape of the barrel 21 was designed. The barrel 21 is a multi-faceted prism barrel; each of the outer walls of the barrel 21 has a row of electromagnetic units 22, and each of the inner walls of the barrel 21 has a corresponding curved glass component.

[0065] Furthermore, the installation of the electromagnetic unit 22 was designed. Multiple annular strips 23 are fitted from top to bottom on the outer wall of the cylinder 21, and the electromagnetic unit 22 is fixed on the corresponding annular strips 23.

[0066] In this embodiment, ultrasonic transducers 23 are also used to remove impurities after polishing. The wall of the barrel 21 is recessed inward to form a triangular groove on both sides corresponding to the curved glass workpiece; multiple ultrasonic transducers 23 are provided on the outer wall of the triangular groove. When the polishing mechanism polishes, the polishing material is removed by the ultrasonic transducers 23.

[0067] In this embodiment, the temperature of the magnetorheological polishing fluid inside the barrel 21 is controlled. A heating tube 24 is also provided at the bottom of the barrel 21.

[0068] A polishing method for a polishing barrel mechanism for curved glass, wherein during polishing:

[0069] a. Conventional surface treatment;

[0070] When the electromagnetic unit controlling the polishing barrel III at a certain height is energized, a large amount of magnetic polishing material is gathered on the curved glass piece at that height.

[0071] Chemical treatment: the aggregated polishing material itself can corrode curved glass parts, thereby performing chemical polishing; during chemical treatment, the temperature conditions of chemical corrosion are controlled by heating tubes;

[0072] The physical processing involves the agglomerated magnetic polishing material grinding the curved glass part under the pressure of the polishing mechanism; and during the physical processing, each adjacent polishing ball rotates in a different direction.

[0073] During physical processing, the polishing mechanism wobbles slightly, and the contact gap between the polishing ball and the curved glass part changes. Under the action of the ultrasonic transducer and the polishing ball, the material that is ground off and the polishing material in the original gap will fall off and be thrown out. When the polishing material is thrown out, it surges in the polishing barrel III under the action of the adjacent polishing balls rotating in different directions without sinking to the bottom. When the ground off material is thrown out, it will eventually sink to the bottom after surging for a certain period of time because it is not magnetic.

[0074] By gradually controlling the energization of electromagnetic units at different heights, the curved glass parts at the corresponding heights are polished in a concentrated manner.

[0075] b. Unconventional surface treatment;

[0076] When the corresponding electromagnetic unit is energized, the presence of the magnetically conductive contour block allows the polishing material to be concentrated on the curved surface more effectively than on a conventional surface, thus achieving better polishing of the curved surface.

[0077] The above embodiments only illustrate preferred implementation methods, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this invention, and these all fall within the protection scope of this invention.

Claims

1. A polishing barrel mechanism for curved glass, characterized in that: Includes barrel body (21) and electromagnetic unit (22); The outer wall of the barrel (21) is provided with multiple electromagnetic units (22), and the barrel (21) is also filled with magnetorheological polishing liquid; The barrel (21) contains a curved glass piece, which is fixed by an adsorption fixture (10); the adsorption fixture (10) has a magnetic back plate (5). When the curved glass piece is placed inside the barrel (21), the magnetic back plate (5) of the adsorption fixture (10) is close to the wall of the barrel (21), and the front of the curved glass piece is fixed to the center of the barrel (21) in the adsorption fixture (10). When the polishing mechanism polishes a part of the curved glass piece: the electromagnetic unit (22) at the corresponding position is turned on, and the electromagnetic unit (22) makes the magnetic back plate magnetic, thereby adsorbing a large amount of magnetic polishing material in the magnetorheological polishing liquid at the polishing position. When the adsorption fixture (10) fixes the curved glass piece, multiple curved glass pieces are suspended vertically along the circumference of the circle; multiple rows of electromagnetic units (22) are provided on the outer wall of the barrel (21), and each row of electromagnetic units (22) corresponds to a curved glass piece; The adsorption fixture (10) includes a support component (1); the support component (1) includes a magnetic back plate (5), a non-magnetic contouring component (6), and a magnetic contouring block (7); the non-magnetic contouring component (6) is fixedly locked to the front of the magnetic back plate (5), and the front of the non-magnetic contouring component (6) is a contouring surface that fits the curved glass component; the non-magnetic contouring component (6) has a through-hole groove at the bend of the corresponding curved glass component, and a magnetic contouring block (7) is placed in the through-hole groove, and the magnetic contouring block (7) is also locked and fixed to the magnetic back plate (5); the front of the magnetic contouring block (7) is a contouring surface that fits the bend of the curved glass component; when the corresponding electromagnetic unit (22) is turned on, the magnetic field at the bend of the curved glass component is greater than the magnetic field at other locations.

2. The polishing barrel mechanism for curved glass according to claim 1, characterized in that: The barrel body (21) is in the shape of a multi-faceted prism; The barrel (21) has a row of electromagnetic units (22) on the outer wall of each of its ridges, and a curved glass piece corresponding to the inner wall of each of its ridges.

3. A polishing barrel mechanism for curved glass according to claim 2, characterized in that: The outer wall of the barrel (21) is fitted with multiple annular strips (23) from top to bottom, and the electromagnetic unit (22) is fixed on the corresponding annular strips (23).

4. A polishing barrel mechanism for curved glass according to claim 1, characterized in that: The wall of the barrel (21) is also recessed into a triangular groove on both sides of the corresponding curved glass workpiece. The triangular groove has multiple ultrasonic transducers (24) on its outer wall. When the polishing mechanism polishes, the polishing material is removed by the ultrasonic transducer (24).

5. A polishing barrel mechanism for curved glass according to claim 1, characterized in that: A heating tube (25) is also provided at the bottom of the inner part of the barrel (21).

6. A polishing barrel mechanism for curved glass according to claim 1, characterized in that: The front side of the non-magnetic contouring part (6) is also provided with multiple pneumatic suction cups; When the pneumatic suction cup is installed on the front of the non-magnetic contouring part: first install the fixing rod of the pneumatic suction cup, then attach a flexible layer to the front of the non-magnetic contouring part (6), and then install the rubber plate of the pneumatic suction cup. When the pneumatic suction cup is used for vacuum adsorption, the rubber disc will adsorb the curved glass part and retract it, allowing the curved glass part to fully adhere to the flexible layer, thus preventing the accumulation of magnetorheological polishing material on the adsorbed surface of the curved glass part.

7. A polishing method for a polishing barrel mechanism for curved glass, characterized in that: During polishing: a. Conventional surface treatment; When the electromagnetic unit (22) of the polishing barrel Ⅲ at a certain height is energized, a large amount of magnetic polishing material is gathered on the curved glass piece at that height. Chemical treatment: The aggregated polishing material itself can corrode the curved glass parts, thereby performing chemical polishing; During chemical treatment, the temperature conditions of chemical corrosion are controlled by heating tube (25); Physical processing: The aggregated magnetic polishing material is used to grind curved glass parts under the pressure of the polishing mechanism. Furthermore, during physical processing, adjacent polishing balls rotate in different directions; During physical processing, the polishing mechanism shakes slightly, and the contact gap between the polishing ball and the curved glass part changes. Under the action of the ultrasonic transducer (24) and the polishing ball, the material that is ground off and the polishing material in the original gap will fall off and be thrown out. When the polishing material is thrown out, it surges in the polishing barrel III under the action of the adjacent polishing balls rotating in different directions without sinking to the bottom. When the ground material is thrown out, it will eventually sink to the bottom after surging for a certain period of time because it is not magnetic. By gradually controlling the energization of electromagnetic units (22) at different heights, the curved glass parts at the corresponding heights are polished in a concentrated manner. b. Unconventional surface treatment; When the corresponding electromagnetic unit (22) is energized on the curved part of the curved glass piece, the presence of the magnetic contour block (7) allows the surface of the curved part to concentrate the polishing material more effectively than the conventional surface, thereby achieving better polishing treatment of the surface of the curved part.

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