Cover plate single-face polishing clamp and cover plate polishing machine
By setting a clamping fixture on the planetary wheel and combining it with the pin tooth height design, the applicability of existing polishing equipment has been expanded, the difficulty of polishing large-size cover plates has been solved, and equipment compatibility and efficiency have been achieved.
Patent Information
- Application Number
- CN202520249470.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-02-17
AI Technical Summary
The size limitations of existing polishing equipment make it impossible to effectively handle large-sized cover plates. Companies need to purchase larger equipment, but the cost is high and the benefits are unpredictable. There is a lack of polishing fixtures for large-sized cover plates that are compatible with small-sized equipment.
A single-sided polishing fixture for cover plates is designed. By setting the bottom of the clamping fixture on the planetary wheel and combining it with the height design of the pin teeth, it is ensured that the fixture does not touch the inner and outer pin teeth during the polishing process, thus expanding the applicability of the equipment and increasing the maximum diagonal length from 380mm to 500mm.
It enables the polishing of cover plates with a diagonal length of less than 500mm on existing equipment, avoiding additional equipment investment, ensuring polishing stability and efficiency, and is suitable for batch processing of large-size cover plates.
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Figure CN223834271U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cover plate polishing technology, and in particular to a cover plate single-sided polishing fixture and cover plate polishing machine. Background Technology
[0002] Size limitations of polishing equipment have always been a challenge for businesses. Currently, most polishing equipment on the market has a specific maximum processing size. For example, a polishing machine with a planetary wheel diameter of 428mm may only be able to process a maximum diagonal size of 380mm. When the cover plate size exceeds this limit, the equipment cannot perform polishing, forcing businesses to purchase larger polishing machines to meet production needs. However, while purchasing larger polishing machines solves the problem, the high investment costs and unpredictable production efficiency are unacceptable to businesses, leading to persistent constraints on equipment size in actual production, hindering the expansion of production scale or the fulfillment of customer demands.
[0003] To address this issue, enterprises need a solution that is compatible with existing small-sized polishing equipment while also meeting the polishing requirements of large-sized cover plates. However, existing technologies do not provide a polishing fixture that is both compatible with existing polishing equipment and can effectively handle large-sized cover plates. Therefore, developing a single-sided polishing fixture that is compatible with both small-sized polishing machines and large-sized cover plates not only has significant theoretical value but also provides a feasible solution for equipment upgrades and process improvements in actual production. Against this backdrop, this invention aims to design a single-sided polishing fixture for large-sized cover plates that is compatible with small-sized polishing machines, thereby resolving the production challenges caused by current equipment size limitations.
[0004] For example, Chinese Utility Model Patent (CN207464987U) discloses a polishing fixture for the concave surface of a curved cover plate, which includes a fixture base, a pad, and a protective frame. The fixture base supports the curved cover plate, and its top surface has a positioning groove. The shape of the positioning groove is adapted to the outer surface of the curved cover plate and the outer arc edge connected to the outer surface. The pad is placed in the positioning groove. The protective frame is a hollow ring and is fitted around the outer circumference of the fixture body. The size of the hollow cavity of the protective frame is larger than the outer circumference of the curved cover plate. The inner sidewall of the protective frame is provided with a protective device for protecting the straight section of the curved cover plate. The protective frame in this utility model can block the contact strength between the straight section of the curved cover plate and the mixed brush, thereby protecting the chamfer of the straight section of the curved cover plate from deformation, while ensuring that the total height of the curved cover plate is not reduced. The polishing fixture of this utility model has high polishing efficiency, is easy to operate, and has low cost.
[0005] However, when the inventors implemented this device, they found the following defects: the prior art does not provide a polishing fixture that is compatible with existing polishing equipment and can effectively handle large-size cover plates. Utility Model Content
[0006] Based on this, it is necessary to provide a single-sided polishing fixture and a polishing machine for cover plates to address the aforementioned technical problems. This fixture sets the bottom of the clamping fixture on the planetary wheel, combined with the height design of the pin teeth. Because the fixture is glued to the planetary wheel plate, the planetary wheel is driven by the inner and outer pin teeth on the equipment, ensuring that the fixture will not come into contact with the inner and outer pin teeth during the polishing process. This expands the applicability of the equipment, increasing the maximum diagonal length from 380mm to 500mm. This design allows one tray to hold 5 fixtures, facilitating batch processing without the need for additional equipment structures. It avoids interference between the cover plate and the polishing wheel during the process, ensuring polishing stability and efficiency. It is suitable for single-sided fixtures with a diagonal length of less than 500mm. Through the combined use of the clamping fixture and the planetary wheel, the difficulties of traditional equipment in polishing large-size cover plates are solved.
[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0008] A single-sided polishing fixture for cover plates.
[0009] The single-sided polishing fixture for the cover plate specifically includes:
[0010] A polishing base includes a central shaft, a disc baffle, an upper polishing pad, inner pin teeth, and outer pin teeth. The upper polishing pad is sleeved on the periphery of the central shaft, and the disc baffle is sleeved on the periphery of the upper polishing pad. A plurality of inner pin teeth are circumferentially arranged on the top surface of the central shaft, and a plurality of outer pin teeth are circumferentially arranged on the top surface of the disc baffle.
[0011] Planetary wheel, the planetary wheel is disposed above the polishing skin of the upper plate, and the outer circumference of the planetary wheel is provided with a plurality of gears for cooperating with the inner and outer pin teeth. The planetary wheel is movably connected to the side walls of the inner and outer pin teeth through the gears.
[0012] A positioning clamp assembly includes a bottom boss disposed on the top of the planetary wheel, a clamp body disposed on the top surface of the bottom boss, and a cover plate groove disposed on the clamp body.
[0013] In a preferred embodiment of the single-sided polishing fixture for the cover plate provided by this utility model, the bottom boss is staggered from the positions of the inner post pin and the outer post pin.
[0014] In a preferred embodiment of the single-sided polishing fixture for the cover plate provided by this utility model, the height of the bottom boss is higher than the height of the inner post pin and the outer post pin.
[0015] In a preferred embodiment of the single-sided polishing fixture for the cover plate provided by this utility model, the maximum diagonal of the groove in the cover plate is 500mm.
[0016] As a preferred embodiment of the single-sided polishing fixture for the cover plate provided by this utility model, the disc baffle includes a baffle side wall and a baffle bottom wall. The baffle bottom wall is disposed on the bottom surface of the baffle side wall and extends towards the central shaft. The outer post pin tooth is disposed on the top surface of the baffle bottom wall.
[0017] In a preferred embodiment of the single-sided polishing fixture for the cover plate provided by this utility model, the bottom wall of the baffle and the polishing skin of the upper plate are on the same horizontal plane.
[0018] In a preferred embodiment of the single-sided polishing fixture for the cover plate provided by this utility model, the height of the bottom boss is 27mm, and the height of both the inner and outer pin teeth is 20mm.
[0019] In a preferred embodiment of the single-sided polishing fixture for the cover plate provided by this utility model, the fixture body is offset from the shaft wall of the central shaft and the side wall of the baffle.
[0020] In a preferred embodiment of the single-sided polishing fixture for the cover plate provided by this utility model, the groove depth of the cover plate groove is lower than the thickness of the cover plate.
[0021] On the other hand, this utility model embodiment also provides a cover plate polishing machine, including the cover plate single-sided polishing fixture as described above.
[0022] Compared with the prior art, the present invention has the following beneficial effects:
[0023] This utility model provides a single-sided polishing fixture and polishing machine for cover plates. The fixture sets the bottom of the clamping fixture on the planetary wheel, combined with the height design of the pin teeth. Because the fixture is glued to the planetary wheel plate, the planetary wheel is driven by the inner and outer pin teeth on the equipment, ensuring that the fixture will not touch the inner and outer pin teeth during the polishing process. This expands the applicability of the equipment, increasing the maximum diagonal length from 380mm to 500mm. This design allows one tray to hold 5 fixtures, facilitating batch processing without the need for additional equipment structure. It avoids interference between the cover plate and the polishing wheel during the process, ensuring polishing stability and efficiency. It is suitable for single-sided fixtures with a diagonal length of less than 500mm. Through the combined use of the clamping fixture and the planetary wheel, it solves the difficulties of traditional equipment in polishing large-size cover plates. Attached Figure Description
[0024] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0025] Figure 1 A schematic diagram of the structure of the single-sided polishing fixture for the cover plate provided by this utility model;
[0026] Figure 2 A schematic diagram of the polishing base and planetary wheel provided by this utility model;
[0027] Figure 3 A schematic diagram of the polishing base provided by this utility model.
[0028] The markings in the diagram are explained as follows:
[0029] Polishing base 100, central shaft 110, disc baffle 120, baffle side wall 121, baffle bottom wall 122, upper polishing skin 130, inner pin tooth 140, outer pin tooth 150; planetary wheel 200, gear 210; clamping fixture assembly 300, bottom boss 310, fixture body 320, cover plate groove 330. Detailed Implementation
[0030] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0031] As in the background art, the prior art does not provide a polishing fixture that is both compatible with existing polishing equipment and can effectively handle large-size cover plates.
[0032] To solve this technical problem, this utility model provides a single-sided polishing fixture for cover plates.
[0033] For details, please refer to Figure 1-3 The single-sided polishing fixture for the cover plate specifically includes:
[0034] The polishing base 100 includes a central shaft 110, a disc baffle 120, an upper polishing pad 130, inner pin teeth 140 and outer pin teeth 150. The upper polishing pad 130 is sleeved on the outer periphery of the central shaft 110, and the disc baffle 120 is sleeved on the outer periphery of the upper polishing pad 130. A number of inner pin teeth 140 are circumferentially arranged on the top surface of the central shaft 110, and a number of outer pin teeth 150 are circumferentially arranged on the top surface of the disc baffle 120.
[0035] Planetary wheel 200 is positioned above the upper polishing pad 130. Several gears 210 are provided on the outer circumference of planetary wheel 200 to engage with inner pin teeth 140 and outer pin teeth 150. Planetary wheel 200 is movably connected to the side walls of inner pin teeth 140 and outer pin teeth 150 through gears 210.
[0036] The positioning clamp assembly 300 includes a bottom boss 310 disposed on the top of the planetary wheel 200, a clamp body 320 disposed on the top surface of the bottom boss 310, and a cover plate groove 330 disposed on the clamp body 320.
[0037] This utility model provides a single-sided polishing fixture for cover plates. The fixture features a bottom clamping clamp mounted on a planetary wheel 200. Combined with the height design of the pin teeth, the fixture is glued to the planetary wheel 200 plate. The planetary wheel 200 is driven by the inner and outer pin teeth on the equipment, ensuring that the fixture will not collide with the inner and outer pin teeth during polishing. This expands the applicability of the equipment, increasing the maximum diagonal length from 380mm to 500mm. This design allows for the storage of five fixtures per tray, facilitating batch processing without requiring additional equipment construction. It avoids interference between the cover plate and the polishing wheel during the process, ensuring polishing stability and efficiency. It is suitable for single-sided fixtures with a diagonal length of less than 500mm. The combined use of the clamping clamp and the planetary wheel 200 solves the difficulties encountered by traditional equipment in polishing large-size cover plates.
[0038] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
[0039] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.
[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0041] Example 1
[0042] Please refer to Figure 1-3 A single-sided polishing fixture for a cover plate includes a polishing base 100. The polishing base 100 includes a central shaft 110, a disc baffle 120, an upper polishing pad 130, inner pin teeth 140, and outer pin teeth 150. The upper polishing pad 130 is sleeved on the periphery of the central shaft 110, and the disc baffle 120 is sleeved on the periphery of the upper polishing pad 130. A plurality of inner pin teeth 140 are circumferentially arranged on the top surface of the central shaft 110, and a plurality of outer pin teeth 150 are circumferentially arranged on the top surface of the disc baffle 120.
[0043] Planetary wheel 200 is positioned above the upper polishing pad 130. Several gears 210 are provided on the outer circumference of planetary wheel 200 to engage with inner pin teeth 140 and outer pin teeth 150. Planetary wheel 200 is movably connected to the side walls of inner pin teeth 140 and outer pin teeth 150 through gears 210.
[0044] The positioning clamp assembly 300 includes a bottom boss 310 disposed on the top of the planetary wheel 200, a clamp body 320 disposed on the top surface of the bottom boss 310, and a cover plate groove 330 disposed on the clamp body 320.
[0045] Through the above structural design, the central shaft 110 is used to cooperate with the polishing machine, so that it is installed on the polishing machine and rotates. The disc baffle 120 is used to provide a circumferential mounting location for the outer pin tooth 150. The outer pin tooth 150 is used to be installed on the top surface extending outward from the bottom surface of the central shaft. Through the inner pin tooth 140 and the outer pin tooth 150, the upper disc polishing skin 130 is engaged in the inner pin tooth 140 and the outer pin tooth 150, so that the planetary wheel 200 performs circumferential transmission.
[0046] By setting the bottom boss 310 of the clamping fixture assembly 300 on the planetary wheel 200, combined with the height design of the inner pin tooth 140 and the outer pin tooth 150, since the fixture is glued to the planetary wheel 200 plate, and the planetary wheel 200 is driven by the inner and outer pin teeth on the equipment, it is ensured that the fixture will not touch the inner and outer pin teeth during the polishing process, thereby expanding the applicability of the equipment and increasing the maximum diagonal length from 380mm to 500mm. The groove depth of the cover plate groove 330 is lower than the thickness of the cover plate, so that the clamping fixture assembly 300 can be clamped and the cover glass can be polished.
[0047] The bottom of the positioning fixture assembly 300 is attached to the planetary wheel 200. The bottom boss 310 has a height of 27mm (the height of the inner pin tooth 140 and the outer pin tooth 150 is 20mm), which can ensure that the positioning fixture assembly 300 will not touch the inner pin tooth 140 and the outer pin tooth 150 during polishing.
[0048] This design allows a single tray to hold five fixtures, facilitating batch processing without requiring additional equipment. It avoids interference between the cover plate and the polishing wheel during the process, ensuring polishing stability and efficiency. It is suitable for single-sided fixtures with a diagonal length of less than 500mm. Through the combined use of the positioning fixture and the planetary wheel 200, it solves the difficulties of traditional equipment when polishing large-size cover plates.
[0049] Specifically, the bottom boss 310 is offset from the positions of the inner post pin 140 and the outer post pin 150.
[0050] Through the above structural design, by setting the bottom boss 310 of the clamping fixture assembly 300 on the planetary wheel 200, combined with the height design of the inner pin tooth 140 and the outer pin tooth 150, since the fixture is glued to the planetary wheel 200 plate, the planetary wheel 200 is driven by the inner and outer pin teeth on the equipment, ensuring that the fixture will not touch the inner and outer pin teeth during the polishing process, thereby expanding the applicability of the equipment.
[0051] Specifically, the height of the bottom boss 310 is higher than the height of the inner pin tooth 140 and the outer pin tooth 150.
[0052] With the above structural design, the bottom of the positioning fixture assembly 300 is attached to the planetary wheel 200. The bottom boss 310 has a height of 27mm (the height of the inner pin tooth 140 and the outer pin tooth 150 is 20mm), which can ensure that the positioning fixture assembly 300 will not touch the inner pin tooth 140 and the outer pin tooth 150 during polishing.
[0053] Specifically, the maximum diagonal of the cover plate groove 330 is 500mm.
[0054] The above structural design allows for the polishing of cover plates with a diagonal length of less than 500mm, increasing the original equipment's maximum size from 380mm to 500mm, reducing limitations on large-size cover plates, and meeting production requirements.
[0055] Specifically, the disc baffle 120 includes a baffle side wall 121 and a baffle bottom wall 122. The baffle bottom wall 122 is disposed on the bottom surface of the baffle side wall 121 and extends towards the central shaft 110. The outer post pin tooth 150 is disposed on the top surface of the baffle bottom wall 122.
[0056] Through the above structural design, the baffle sidewall 121 is used to limit the movement of the upper polishing skin 130, and the baffle bottom wall 122 is used to provide a fixed place for the outer post pin 150. The baffle sidewall 121 and the baffle bottom wall 122 are an integrated structure.
[0057] Example 2
[0058] The single-sided polishing fixture for the cover plate provided in Example 1 is further optimized, specifically, as follows: Figure 1-3 As shown, the bottom wall 122 of the baffle and the polished skin 130 of the upper plate are on the same horizontal plane.
[0059] Through the above structural design, the fixture sets the bottom of the clamping fixture on the planetary wheel 200. Combined with the height design of the pin teeth, since the fixture is glued to the planetary wheel 200 plate, the planetary wheel 200 is driven by the inner and outer pin teeth on the equipment. This ensures that the fixture will not come into contact with the inner and outer pin teeth during the polishing process, thereby expanding the applicability of the equipment and increasing the maximum diagonal length from 380mm to 500mm. This design allows a tray to hold 5 fixtures, which is convenient for batch processing. No additional equipment structure is required. It avoids interference between the cover plate and the polishing wheel during the process, ensuring polishing stability and efficiency. It is suitable for single-sided fixtures with a diagonal length of less than 500mm. Through the combined use of the clamping fixture and the planetary wheel 200, the difficulties of traditional equipment in polishing large-size cover plates are solved.
[0060] Example 3
[0061] The single-sided polishing fixture for the cover plate provided in Embodiment 1 or 2 is further optimized, such as... Figure 1-3 As shown, the height of the bottom boss 310 is 27mm, and the heights of the inner pin tooth 140 and the outer pin tooth 150 are both 20mm.
[0062] With the above structural design, the bottom of the positioning fixture assembly 300 is attached to the planetary wheel 200. The bottom boss 310 has a height of 27mm (the height of the inner pin tooth 140 and the outer pin tooth 150 is 20mm), which can ensure that the positioning fixture assembly 300 will not touch the inner pin tooth 140 and the outer pin tooth 150 during polishing.
[0063] Specifically, the fixture body 320 is offset from the shaft wall of the central shaft 110 and the side wall 121 of the baffle.
[0064] Through the above structural design, combined with the height design of the inner pin tooth 140 and the outer pin tooth 150, since the clamp is glued to the planetary wheel 200 plate, the planetary wheel 200 is driven by the inner and outer pin teeth on the equipment, ensuring that the clamp will not touch the inner and outer pin teeth during the polishing process, thereby expanding the applicable range of the equipment and increasing the maximum diagonal length from 380mm to 500mm. The groove depth of the cover plate groove 330 is lower than the thickness of the cover plate, which can both clamp the clamp assembly 300 and polish the cover glass.
[0065] Specifically, the groove depth of the cover plate groove 330 is less than the thickness of the cover plate.
[0066] Through the above structural design, the groove depth of the cover plate groove 330 is lower than the thickness of the cover plate, which can both position the clamping assembly 300 and polish the cover plate glass.
[0067] This utility model embodiment also provides a cover plate polishing machine, including the cover plate single-sided polishing fixture as described above.
[0068] The usage process of the single-sided polishing fixture and polishing machine for cover plates provided by this utility model is as follows:
[0069] This fixture, by placing the bottom of the clamping fixture on the planetary wheel 200 and combining it with the height design of the pin teeth, ensures that the fixture will not come into contact with the inner and outer pin teeth during the polishing process. This expands the applicability of the equipment, increasing the maximum diagonal length from 380mm to 500mm. This design allows a tray to hold 5 fixtures, facilitating batch processing without requiring additional equipment construction. It also avoids interference between the cover plate and the polishing wheel during the process, ensuring polishing stability and efficiency. It is suitable for single-sided fixtures with a diagonal length of less than 500mm. Through the combined use of the clamping fixture and the planetary wheel 200, it solves the difficulties of traditional equipment in polishing large-size cover plates.
[0070] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0071] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.
Claims
1. A single-sided polishing fixture for cover plates, characterized in that, It includes: A polishing base (100) includes a central shaft (110), a disc baffle (120), an upper polishing pad (130), inner pin teeth (140), and outer pin teeth (150). The upper polishing pad (130) is sleeved on the periphery of the central shaft (110), and the disc baffle (120) is sleeved on the periphery of the upper polishing pad (130). A plurality of inner pin teeth (140) are circumferentially arranged on the top surface of the central shaft (110), and a plurality of outer pin teeth (150) are circumferentially arranged on the top surface of the disc baffle (120). Planetary wheel (200) is disposed above the upper polishing pad (130). The outer circumference of the planetary wheel (200) is provided with a plurality of gears (210) for engaging the inner pin tooth (140) and the outer pin tooth (150). The planetary wheel (200) is movably connected to the sidewalls of the inner pin tooth (140) and the outer pin tooth (150) through the gears (210). The positioning clamp assembly (300) includes a bottom boss (310) disposed on the top of the planetary wheel (200), and a clamp body (320) is disposed on the top surface of the bottom boss (310), and the clamp body (320) is provided with a cover plate groove (330).
2. The cover plate single-sided polishing fixture according to claim 1, characterized in that, The bottom boss (310) is offset from the positions of the inner post pin (140) and the outer post pin (150).
3. The cover plate single-sided polishing fixture according to claim 2, characterized in that, The height of the bottom boss (310) is higher than the height of the inner post pin (140) and the outer post pin (150).
4. The cover plate single-sided polishing fixture according to claim 1, characterized in that, The maximum diagonal of the cover plate groove (330) is 500mm.
5. The cover plate single-sided polishing fixture according to claim 4, characterized in that, The disc baffle (120) includes a baffle sidewall (121) and a baffle bottomwall (122). The baffle bottomwall (122) is disposed on the bottom surface of the baffle sidewall (121) and extends toward the central shaft (110). The outer pin tooth (150) is disposed on the top surface of the baffle bottomwall (122).
6. The cover plate single-sided polishing fixture according to claim 5, characterized in that, The bottom wall (122) of the baffle and the polished skin (130) of the upper plate are on the same horizontal plane.
7. The cover plate single-sided polishing fixture according to claim 3, characterized in that, The bottom boss (310) has a height of 27mm, and the inner post pin (140) and the outer post pin (150) both have a height of 20mm.
8. The cover plate single-sided polishing fixture according to claim 5, characterized in that, The fixture body (320) is offset from the shaft wall of the central shaft (110) and the side wall of the baffle (121).
9. The cover plate single-sided polishing fixture according to claim 1, characterized in that, The groove depth of the cover plate groove (330) is less than the thickness of the cover plate.
10. A cover plate polishing machine, characterized in that, It includes a cover plate single-sided polishing fixture as described in any one of claims 1-9.
Citation Information
Patent Citations
Curved surface apron indent mirror polish anchor clamps
CN207464987U