Metal square mirror polishing method and tool

Abstract

The invention provides a metal square mirror polishing method and tool, and the polishing method comprises the steps: obtaining a to-be-treated product, and carrying out the pretreatment of the to-be-treated product, so as to remove oil stains and impurities on the surface of the to-be-treated product; a first polishing agent is obtained, and rough polishing is conducted on the to-be-treated product through the first polishing agent under the first set condition by means of first polishing equipment, so that concave-convex and scratches on the surface of the to-be-treated product are removed; a second polishing agent is obtained, the second polishing device is used for conducting fine polishing on the to-be-treated product through the second polishing agent under the second set condition, so that the roughness of the surface of the to-be-treated product is reduced, and a final product is obtained; wherein the first set condition comprises the preset polishing pressure, the preset polishing disk rotating speed and the preset polishing time of the first polishing equipment; the second set condition comprises the preset polishing pressure of the second polishing equipment, the preset polishing disk rotating speed and the preset polishing time. The problem that in the prior art, the polishing precision of a polishing technology on a metal square mirror is insufficient is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal square mirror polishing, and more particularly, to a method and tooling for polishing metal square mirrors. Background Art

[0002] Currently, due to their excellent physical and chemical properties, metal square mirrors play an indispensable role in fields such as electronics, semiconductors, and precision instruments. To meet the stringent requirements of these applications for optical performance, electrical conductivity, and sealing performance, the surface of metal square mirrors needs to achieve a high-precision mirror effect. In the prior art, mechanical polishing, chemical polishing, and electrochemical polishing are widely used for the surface treatment of metal square mirrors to improve their surface quality.

[0003] However, each of these techniques has its limitations and technical problems:

[0004] Although traditional mechanical polishing methods can initially remove roughness and scratches on the surface of metal square mirrors, it is difficult to avoid leaving nanoscale fine traces on the surface, which is undoubtedly a major obstacle for applications that pursue extreme surface smoothness. In addition, when processing square mirrors with regular shapes, it is difficult to polish the edges and corners evenly by mechanical polishing, resulting in uneven overall surface quality.

[0005] As a chemical reaction process, chemical polishing can improve the surface finish of metal square mirrors through corrosion. However, while improving the mirror effect, the use of chemical reagents causes potential environmental pollution, violating the principle of green manufacturing. More importantly, the accuracy and process controllability of chemical polishing are insufficient, and it is difficult to precisely control the polishing depth, thus limiting its wide adoption in high-precision applications.

[0006] Electrochemical polishing technology combines the advantages of electrochemical reactions and chemical polishing, and can achieve relatively uniform surface polishing and improve flatness. However, when faced with complex shapes, especially workpieces with specific geometric structures such as metal square mirrors, the problem of uneven current distribution becomes prominent, and local over-polishing or under-polishing often occurs, which directly affects the final mirror effect and functionality of metal square mirrors.

[0007] Therefore, although the existing polishing techniques have their own characteristics, they still have technical problems such as insufficient accuracy, poor environmental friendliness, and limited ability to process complex shapes when facing the high-precision mirror polishing requirements of metal square mirrors. Summary of the Invention

[0008] The main objective of the present invention is to provide a method and tooling for polishing metal square mirrors to solve the problem of insufficient polishing accuracy of the polishing techniques in the prior art for metal square mirrors.

[0009] To achieve the above object, according to one aspect of the present invention, there is provided a method for polishing a metal square mirror, comprising: obtaining a product to be processed, and preprocessing the product to be processed to remove oil stains and impurities on the surface of the product to be processed; obtaining a first polishing agent, and using a first polishing device to perform rough polishing on the product to be processed through the first polishing agent under a first set of conditions to remove unevenness and scratches on the surface of the product to be processed; obtaining a second polishing agent, and using a second polishing device to perform fine polishing on the product to be processed through the second polishing agent under a second set of conditions to reduce the surface roughness of the product to be processed to obtain a final product; wherein, the first set of conditions includes a preset polishing pressure, a preset polishing disc rotation speed, and a preset polishing time of the first polishing device; the second set of conditions includes a preset polishing pressure, a preset polishing disc rotation speed, and a preset polishing time of the second polishing device.

[0010] Further, preprocessing the product to be processed includes: obtaining a cleaning solution, and using an ultrasonic cleaner to clean the product to be processed under a preset cleaning time and a preset ultrasonic frequency; wherein, the cleaning solution is an organic solvent or deionized water; and / or, the preset cleaning time of the ultrasonic cleaner is 10 to 15 minutes; and / or, the preset ultrasonic frequency of the ultrasonic cleaner is 40 to 60 kHz.

[0011] Further, after using the ultrasonic cleaner to clean the product to be processed under a third set of conditions, it includes: obtaining an acid cleaning solution, and performing activation treatment on the surface of the product to be processed within a set treatment time; wherein, the acid cleaning solution is obtained by mixing dilute sulfuric acid and dilute hydrochloric acid in a ratio of 3:1; and / or, the set treatment time is 3 to 5 minutes.

[0012] Further, obtaining the first polishing agent includes: obtaining a first abrasive and a first polishing liquid, and mixing the first abrasive and the first polishing liquid in a ratio of 1:3 to obtain the first polishing agent; wherein, the first abrasive is a diamond abrasive with a particle size ranging from 100 to 200 mesh; and / or, the first polishing liquid is composed of water, a surface activator, and an anti-rust agent.

[0013] Further, the preset polishing pressure of the first polishing device is 0.2 to 0.3 MPa; and / or, the preset polishing disc rotation speed of the first polishing device is 500 to 800 r / min; and / or, the preset polishing time of the first polishing device is 30 to 45 minutes.

[0014] Further, obtaining the second polishing agent includes: obtaining a second abrasive and a second polishing liquid, and mixing the second abrasive and the second polishing liquid in a ratio of 1:3 to obtain the second polishing agent; wherein, the second abrasive is an alumina abrasive with a particle size ranging from 500 to 1000 mesh; and / or, the second polishing liquid is composed of an organic acid, a corrosion inhibitor, and a lubricant.

[0015] Further, the preset polishing pressure of the second polishing device is 0.05 - 0.1 MPa; and / or, the preset rotating speed of the polishing disc of the first polishing device is 200 - 300 r / min; and / or, the preset polishing time of the first polishing device is 60 - 90 minutes.

[0016] Further, after obtaining the second polishing agent, before performing fine polishing on the product to be processed with the second polishing agent by the second polishing device under the second set conditions, it includes: selecting a corresponding polishing tooling according to the size and shape of the product to be processed; assembling the product to be processed on the polishing tooling, and making the mirror surface to be polished of the product to be processed coplanar with the tooling plane of the polishing tooling; wherein, the material of the polishing tooling is the same as that of the product to be processed.

[0017] Further, after performing fine polishing on the product to be processed with the second polishing agent by the second polishing device under the second set conditions, it includes: obtaining a rinsing liquid, and using the rinsing liquid to rinse the surface of the product to be processed to remove the residual polishing liquid and abrasives on the surface of the product to be processed; drying the product to be processed in a drying oven under a preset processing time and a preset temperature; spraying a nano-level anti-oxidation protective film on the surface of the product to be processed to obtain the final product; wherein, the rinsing liquid is deionized water; and / or, the preset processing time of the drying oven is 30 - 60 minutes; and / or, the preset temperature of the drying oven is 60 - 80 °C.

[0018] According to another aspect of the present invention, there is provided a polishing tooling applicable to the above-mentioned metal square mirror polishing method. The polishing tooling includes: a tooling base which is rotatably arranged and has a tooling plane; an auxiliary structure for assembling on the product to be processed after rough polishing. The auxiliary structure covers a part of the surface of the product to be processed to form an assembly. The assembly can be selectively installed on the tooling base in a direction perpendicular to the tooling base or in a direction inclined to the tooling base, so that the mirror surface to be polished of the product to be processed is coplanar with the tooling plane.

[0019] Further, an installation groove is provided on the tooling base, and an installation opening is provided at the bottom of the installation groove. A part of the assembly extends into the installation groove and is arranged in cooperation with the installation groove, so that the mirror surface to be polished of the product to be processed is located at the installation opening and is coplanar with the tooling plane; wherein, the groove opening to the bottom of the installation groove extends in a direction perpendicular to the tooling base or in a direction inclined to the tooling base.

[0020] Further, the polishing tooling further includes: a limiting component including two fixing plates. One ends of the two fixing plates are respectively used for connecting with the tooling base, and the other ends of the two fixing plates are respectively used for connecting with the opposite sides of the assembly, so as to limit the assembly relative to the tooling base.

[0021] Further, the auxiliary structure includes: two auxiliary plates. The product to be processed is disposed between the two auxiliary plates and is respectively arranged in an adapted manner with the two auxiliary plates, so as to form an assembly by connecting the two auxiliary plates, such that the two auxiliary plates and the product to be processed form an assembly; wherein, the assembly is of a square structure.

[0022] Applying the technical solution of the present invention, a method for polishing a metal square mirror is provided, including: obtaining a product to be processed, and performing pre-treatment on the product to be processed to remove oil stains and impurities on the surface of the product to be processed; obtaining a first polishing agent, and using a first polishing device to perform rough polishing on the product to be processed through the first polishing agent under a first set of conditions, so as to remove unevenness and scratches on the surface of the product to be processed; obtaining a second polishing agent, and using a second polishing device to perform fine polishing on the product to be processed through the second polishing agent under a second set of conditions, so as to reduce the surface roughness of the product to be processed to obtain a final product; wherein, the first set of conditions includes a preset polishing pressure, a preset polishing disc rotation speed, and a preset polishing time of the first polishing device; the second set of conditions includes a preset polishing pressure, a preset polishing disc rotation speed, and a preset polishing time of the second polishing device.

[0023] In this way, the pre-treatment stage effectively removes the oil stains and impurities on the surface of the metal square mirror, creating a good foundation for subsequent rough polishing and fine polishing. The rough polishing process removes obvious unevenness and scratches on the surface, and the fine polishing process further reduces the surface roughness, making the surface of the final product reach nanoscale smoothness, significantly improving the mirror reflectivity and surface optical properties, and thus solving the problem of insufficient polishing accuracy of the existing polishing technology for metal square mirrors. By precisely controlling the first set of conditions and the second set of conditions respectively, that is, the polishing pressure, the polishing disc rotation speed, and the polishing time, this polishing method can ensure uniform and high-precision polishing on the entire surface of the metal square mirror, optimize the polishing process, and compared with the existing technology, the entire polishing process time is shortened by 20% - 30%, and unnecessary processes and time are reduced, making the entire polishing process more efficient. Moreover, the improvement of the automation level reduces the dependence on manpower, reduces operation errors, thereby improving the consistency and stability of production, and indirectly reducing the production cost. Description of the Drawings

[0024] The specification drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0025] Figure 1 A schematic diagram of the overall structure provided by the first embodiment of the polishing tooling according to the present invention is shown;

[0026] Figure 2Shows a top view of a polishing tooling according to a first embodiment of the present invention;

[0027] Figure 3 Shows Figure 2 A cross-sectional view taken along the A-A perspective in;

[0028] Figure 4 Shows a schematic diagram of the overall structure of a polishing tooling according to a second embodiment of the present invention;

[0029] Figure 5 Shows a top view of a polishing tooling according to a second embodiment of the present invention;

[0030] Figure 6 Shows Figure 5 A cross-sectional view taken along the B-B perspective in.

[0031] Wherein, the above-mentioned drawings include the following reference numerals:

[0032] 10, tooling base; 11, tooling plane; 12, mounting groove; 120, mounting opening;

[0033] 20, auxiliary structure; 21, auxiliary plate;

[0034] 30, limiting component; 31, fixing plate;

[0035] 100, product to be processed; 101, mirror surface to be polished. Detailed implementation manners

[0036] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0037] In order to solve the problem of insufficient polishing accuracy of the existing polishing technology for metal square mirrors. The present invention provides a metal square mirror polishing method and tooling.

[0038] An aspect of the technical solution of the present invention provides a method for polishing a metal square mirror, including: obtaining a product to be processed 100, and performing pretreatment on the product to be processed 100 to remove oil stains and impurities on the surface of the product to be processed 100; obtaining a first polishing agent, and using a first polishing device to perform rough polishing on the product to be processed 100 with the first polishing agent under a first set of conditions to remove unevenness and scratches on the surface of the product to be processed 100; obtaining a second polishing agent, and using a second polishing device to perform fine polishing on the product to be processed 100 with the second polishing agent under a second set of conditions to reduce the surface roughness of the product to be processed 100 to obtain a final product; wherein, the first set of conditions includes a preset polishing pressure, a preset polishing disc rotation speed, and a preset polishing time of the first polishing device; the second set of conditions includes a preset polishing pressure, a preset polishing disc rotation speed, and a preset polishing time of the second polishing device.

[0039] In the pretreatment stage, the oil stains and impurities on the surface of the metal square mirror are effectively removed, creating a good foundation for subsequent rough polishing and fine polishing. The rough polishing process removes obvious unevenness and scratches on the surface, and the fine polishing process further reduces the surface roughness, making the surface of the final product reach nanoscale smoothness, significantly improving the mirror reflectivity and surface optical properties, and thus solving the problem of insufficient polishing accuracy of the existing polishing technology for metal square mirrors. By precisely controlling the first set of conditions and the second set of conditions, namely the polishing pressure, the polishing disc rotation speed, and the polishing time, respectively, this polishing method can ensure uniform and high-precision polishing on the entire surface of the metal square mirror, optimize the polishing process, and compared with the existing technology, the entire polishing process time is shortened by 20% - 30%, and unnecessary processes and time are reduced, making the entire polishing process more efficient. Moreover, the improvement of the automation level reduces the dependence on manpower, reduces operation errors, thereby improving the consistency and stability of production, and indirectly reducing the production cost.

[0040] In this embodiment, the product to be processed 100 is a metal square mirror, which is applicable to square mirrors made of various metal materials, such as copper, aluminum, stainless steel, etc., and has good versatility. Moreover, for metal square mirrors of different sizes and shapes, by adjusting relevant process parameters, this polishing method can obtain ideal polishing effects, ensuring the comprehensiveness and uniformity of polishing.

[0041] In this embodiment, the first polishing device is a surface polishing machine; the second polishing device is a high-precision numerical control polishing machine.

[0042] Specifically, the pretreatment of the product to be processed 100 includes: obtaining a cleaning solution and using an ultrasonic cleaning machine to clean the product to be processed 100 at a preset cleaning time and a preset ultrasonic frequency; wherein, the cleaning solution is an organic solvent or deionized water; and / or, the preset cleaning time of the ultrasonic cleaning machine is 10 to 15 minutes; and / or, the preset ultrasonic frequency of the ultrasonic cleaning machine is 40 to 60 kHz.

[0043] First, place the metal square mirror in an ultrasonic cleaning machine and perform alternating cleaning with an organic solvent and deionized water. The ultrasonic cleaning machine uses the blasting effect of microbubbles generated by high-frequency vibration, which can penetrate into the tiny gaps and grooves on the surface of the metal square mirror, effectively removing the attached oil stains, dust, and impurities, creating a clean and flawless surface starting point for subsequent polishing treatment. Among them, the ultrasonic frequency of 40 to 60 kHz has been verified by experiments to have a good removal effect on metal surface contaminants while reducing potential damage to the surface of the metal square mirror. The ultrasonic cavitation effect generated in this frequency range is moderate, capable of forming an appropriate amount of microbubbles that burst on the surface of the metal square mirror, thereby removing stubborn stains and oxide layers without damaging the metal surface. Within the cleaning time of 10 to 15 minutes, the energy of the ultrasonic waves can fully act on the surface of the metal square mirror, effectively removing the oil stains, dust, and tiny impurities on the surface. The setting of the time takes into account the balance between the cleaning effect and energy consumption, avoiding energy waste and unnecessary equipment wear caused by too long cleaning time, while also ensuring the thoroughness of cleaning.

[0044] Specifically, after cleaning the product to be processed 100 with an ultrasonic cleaning machine under the third set conditions, it includes: obtaining an acid pickling solution and performing an activation treatment on the surface of the product to be processed 100 within a set treatment time; wherein, the acid pickling solution is obtained by mixing dilute sulfuric acid and dilute hydrochloric acid in a ratio of 3:1; and / or, the set treatment time is 3 to 5 minutes.

[0045] The dilute sulfuric acid and dilute hydrochloric acid in the acid pickling solution can chemically react with the possible oxide layer or passivation film on the surface of the metal square mirror, removing these surface layers and making the metal surface more active, providing a better starting point for subsequent polishing treatment. Through acid pickling, the microstructure of the surface of the metal square mirror is optimized, reducing the consumption of abrasives during the polishing process, improving the uniformity and consistency of the polishing effect, and helping to achieve a higher surface finish. At the same time, removing the surface oxide layer can avoid insufficient polishing or scratches caused by the presence of oxides during the polishing process, ensuring that there are no obvious defects on the surface of the polished metal square mirror.

[0046] Among them, dilute sulfuric acid and dilute hydrochloric acid are mixed and used in a ratio of 3:1, which can effectively remove different types of oxide layers and stains on the surface of the metal square mirror. The specific ratio of these two acids can produce a synergistic effect, increasing the dissolution rate of oxides, thereby efficiently activating the metal surface in a shorter time. The treatment time is set to 3 - 5 minutes, taking into account the metal material. An overly long pickling time may cause deep corrosion of the metal surface, while an overly short time may not completely remove the oxide layer. This time range can ensure that the oxide layer is effectively removed while preventing over-corrosion of the metal surface and maintaining the original structure and performance of the metal square mirror.

[0047] Specifically, obtaining the first polishing agent includes: obtaining the first abrasive and the first polishing liquid, and mixing the first abrasive and the first polishing liquid in a ratio of 1:3 to obtain the first polishing agent; wherein, the first abrasive is a diamond abrasive with a particle size ranging from 100 to 200 mesh; and / or, the first polishing liquid is composed of water, a surface activator, and an anti-rust agent.

[0048] Diamond is selected as the first abrasive because of its extremely high hardness and good grinding performance, which can effectively remove rough parts, scratches, and obvious unevenness and other defects on the surface of the metal square mirror. The particle size selection of 100 - 200 mesh can balance the grinding effect and the degree of surface damage, ensuring that no new damage is generated while removing surface defects. The components of the first polishing liquid include water, a surface activator, and an anti-rust agent. Water, as a solvent, can help the abrasive disperse evenly and maintain lubricity during the polishing process; the surface activator can improve the contact efficiency between the metal square mirror and the abrasive, accelerating the removal of surface defects; the anti-rust agent can prevent the metal square mirror from rusting during the polishing process and maintain the integrity of the metal material. Mixing the diamond abrasive and the polishing liquid in a ratio of 1:3 can form a polishing agent with appropriate viscosity and fluidity, ensuring the uniform distribution of the abrasive on the polishing disc and high-efficiency grinding, while reducing the waste of the abrasive and optimizing the performance and cost of the polishing process.

[0049] In this application, the preset polishing pressure of the first polishing device is 0.2 - 0.3 MPa; and / or, the preset rotation speed of the polishing disc of the first polishing device is 500 - 800 r / min; and / or, the preset polishing time of the first polishing device is 30 - 45 minutes.

[0050] With the settings of the first polishing equipment above, a polishing pressure of 0.2 - 0.3 MPa can ensure the removal of the surface material of the metal square mirror while avoiding surface damage or deformation caused by excessive pressure. Such a pressure range can effectively control the surface roughness and ensure the accuracy and surface quality in the rough polishing stage. The setting of the polishing disc rotation speed of 500 - 800 r / min takes into account the balance between polishing efficiency and surface finish. If the rotation speed is too low, the grinding effect is poor and the polishing time will be prolonged; if the rotation speed is too high, uneven polishing effects or local overheating may occur. Within this rotation speed range, it can ensure sufficient contact between the first abrasive and the surface of the metal square mirror during the polishing process while avoiding unnecessary damage to the surface. The polishing time of 30 - 45 minutes is based on a comprehensive consideration of the size, material, and surface condition of the metal square mirror. Sufficient time is ensured to fully remove surface defects while avoiding surface damage caused by over-polishing. By controlling this time range, it can ensure that the metal square mirror obtains a uniform surface flatness in the rough polishing stage, providing a good foundation for subsequent fine polishing. By selecting the preset polishing pressure, preset polishing disc rotation speed, and preset polishing time of different first polishing equipment, it can adapt to rough polishing of metal square mirrors of different sizes and shapes.

[0051] Specifically, obtaining the second polishing agent includes: obtaining the second abrasive and the second polishing liquid, and mixing the second abrasive and the second polishing liquid in a ratio of 1:3 to obtain the second polishing agent; wherein, the second abrasive is alumina abrasive with a particle size ranging from 500 to 1000 mesh; and / or, the second polishing liquid is composed of organic acid, corrosion inhibitor and lubricant.

[0052] Selecting alumina abrasive with a particle size of 500 - 1000 mesh as the abrasive for fine polishing can further refine the surface of the metal square mirror, eliminate the fine scratches that may remain in the rough polishing stage, and improve the surface finish. Such fine abrasive performs excellently in fine surface treatment, can meet the surface roughness requirements at the nanometer level, further reduce the surface roughness, and improve the flatness.

[0053] The organic acid contained in the second polishing liquid can undergo a slight chemical reaction with the metal surface, helping to remove the remaining oxides and impurities and improving the polishing efficiency. The addition of the corrosion inhibitor can prevent new corrosion or oxidation on the metal surface during the polishing process, protecting the integrity and surface quality of the metal material. The lubricant can reduce the friction between the metal and the polishing disc during the polishing process, improve the polishing stability, and at the same time reduce the wear between the polishing disc and the abrasive, extending the service life. Mixing the alumina abrasive with the second polishing liquid in a ratio of 1:3 can form a second polishing agent with appropriate viscosity and fluidity, ensuring the uniform distribution and efficient utilization of the second abrasive during the polishing process, while providing good lubrication and cooling effects to avoid local overheating or uneven polishing. Using high-grit alumina abrasive and a specific second polishing liquid in the fine polishing stage can improve the microstructure of the metal square mirror surface, refine the surface texture, making the surface smoother and finer, laying a foundation for achieving the final mirror effect.

[0054] In this application, the preset polishing pressure of the second polishing device is 0.05 - 0.1 MPa; and / or, the preset polishing disc rotation speed of the first polishing device is 200 - 300 r / min; and / or, the preset polishing time of the first polishing device is 60 - 90 minutes.

[0055] The above settings of the second polishing device can achieve gentle treatment of the metal square mirror surface in the fine polishing stage by using an extremely low polishing pressure of 0.05 - 0.1 MPa, avoiding new damage to the already finely treated surface. This pressure range helps to further reduce the surface roughness and achieve extremely high smoothness, meeting the requirements of high-precision applications. The setting of the polishing disc rotation speed of 200 - 300 r / min can provide a stable and precise grinding effect during the fine polishing process, ensuring the uniform distribution of the alumina abrasive, while avoiding surface defects or local over-polishing caused by too high a rotation speed. This rotation speed range combined with low pressure can achieve fine processing of the metal square mirror surface. The setting of the polishing time of 60 - 90 minutes is to ensure that all areas of the metal square mirror surface can be fully and finely polished under low pressure and moderate rotation speed. This time range can effectively remove the minute unevenness and scratches on the surface, meeting the requirements of the mirror effect. The low pressure and fine abrasive used in the fine polishing stage can improve the surface smoothness while minimizing the material removal amount, maintaining the dimensional accuracy and shape integrity of the metal square mirror. By selecting the preset polishing pressure, preset polishing disc rotation speed, and preset polishing time of different second polishing devices, it is possible to adapt to metal square mirrors of different sizes and shapes for fine polishing treatment.

[0056] Specifically, before the fine polishing treatment of the product to be treated 100 with the second polishing agent under the second set conditions after obtaining the second polishing agent, it includes: selecting a polishing tooling corresponding to the size and shape of the product to be treated 100; assembling the product to be treated 100 on the polishing tooling, and making the mirror surface 101 to be polished of the product to be treated 100 coplanar with the tooling plane 11 of the polishing tooling; wherein, the material of the polishing tooling is the same as that of the product to be treated 100.

[0057] In this way, by selecting a polishing tooling that matches the size and shape of the product to be treated 100, the metal square mirror can be fully contacted and evenly polished during the polishing process, ensuring the consistency of the surface quality. The coplanar assembly method helps to eliminate the polishing dead corners and achieve a uniform polishing effect. Using a polishing tooling with the same material as the product to be treated 100 can reduce polishing defects caused by material differences, such as local overheating or chemical reaction mismatch. The consistency of the materials ensures the matching of the thermal expansion coefficient and physical properties during the polishing process, which helps to control the temperature distribution during the polishing process and avoid thermal damage. Through the design and use of the polishing tooling, the pressure distribution and contact area during the polishing process can be more precisely controlled, which helps to optimize the setting of the polishing pressure and rotation speed of the second polishing equipment, so that the metal square mirror can achieve the ideal surface roughness and surface shape accuracy in the fine polishing stage.

[0058] Specifically, after the fine polishing treatment of the product to be treated 100 with the second polishing agent under the second set conditions by using the second polishing equipment, it includes: obtaining a rinsing liquid, and using the rinsing liquid to rinse the surface of the product to be treated 100 to remove the residual polishing liquid and abrasives on the surface of the product to be treated 100; drying the product to be treated 100 in a drying oven under a preset treatment time and a preset temperature; spraying a nano-scale anti-oxidation protective film on the surface of the product to be treated 100 to obtain the final product; wherein, the rinsing liquid is deionized water; and / or, the preset treatment time of the drying oven is 30 to 60 minutes; and / or, the preset temperature of the drying oven is 60 to 80 °C.

[0059] Using deionized water as the rinsing liquid can effectively remove the residual polishing liquid and abrasives on the surface of the metal square mirror, ensuring that there are no chemical residues and particulate impurities on the surface, providing a clean basis for subsequent drying and protective film spraying, avoiding the use of harmful chemical solvents, and reducing environmental pollution. At a temperature of 60 - 80°C, the preset treatment time in the drying oven is 30 - 60 minutes, which can quickly and thoroughly remove the moisture on the product surface, preventing surface oxidation and corrosion caused by residual moisture. This temperature range and time setting can effectively dry the metal square mirror while avoiding material deformation or damage caused by excessive temperature. Spraying a nano-scale anti-oxidation protective film on the surface of the metal square mirror can significantly improve the anti-oxidation performance of the product and extend its service life. The nano-scale thickness of the protective film ensures its high transparency, does not affect the optical performance of the metal square mirror, and provides effective surface protection.

[0060] After being processed by this polishing method, the surface roughness of the metal square mirror can reach within 0.01μm, the specular reflectivity Rp≥97%, meeting the requirements of high-precision applications. The surface form accuracy of the metal square mirror is high, the surface form accuracy can reach PV≤4λ, PV≤0.7λ within any 60mm * 30mm range, (λ = 633nm), the reflectivity Rs≥97%, Rp≥97% @ 633nm; the micro-topography is uniform, without obvious scratches, pits and other defects.

[0061] Please refer to Figures 1 to 6 As shown, another aspect of the technical solution of the present invention provides a polishing tooling applicable to the metal square mirror polishing method mentioned above. The polishing tooling includes a tooling base 10 and an auxiliary structure 20; the tooling base 10 is rotatably arranged, and the tooling base 10 has a tooling plane 11; the auxiliary structure 20 is used to be assembled on the product to be processed 100 after rough polishing, and the auxiliary structure 20 covers a part of the surface of the product to be processed 100 to form an assembly. The assembly can be selectively installed on the tooling base 10 in a direction perpendicular to or inclined to the tooling base 10, so that the mirror surface 101 to be polished of the product to be processed 100 is coplanar with the tooling plane 11. With the above setting, the auxiliary structure 20 and the product to be processed 100 after rough polishing are assembled to form an assembly, which can effectively prevent the phenomenon of edge stepping of the metal square mirror during the polishing process. The design of the tooling base 10 and the auxiliary structure 20 ensures the stability and positioning accuracy of the product to be processed 100 during the polishing process, so that the mirror surface 101 to be polished of the product to be processed 100 can be coplanar with the tooling plane 11 when it needs to be perpendicular to or inclined to the tooling base 10. This coplanarity is crucial for achieving uniform polishing, avoiding uneven polishing caused by angle or position deviation, and thus improving the polishing efficiency and surface quality. The rotatable design of the tooling base 10 combined with the second polishing equipment can achieve the fine polishing treatment of the product to be processed 100.

[0062] Specifically, an installation groove 12 is provided on the tooling base 10, and an installation opening 120 is provided at the bottom of the installation groove 12. A part of the assembly extends into the installation groove 12 and is arranged in cooperation with the installation groove 12, so that the mirror surface 101 to be polished of the product 100 to be processed is located at the installation opening 120 and coplanar with the tooling plane 11; wherein, the groove opening to the groove bottom of the installation groove 12 extends in a direction perpendicular to or inclined to the tooling base 10. In this way, the structural design of the installation groove 12 enables the assembly to be accurately positioned all the time when the assembly needs to be precisely polished perpendicular to or inclined to the tooling base 10, and ensures that the mirror surface 101 to be polished of the product 100 to be processed is coplanar with the tooling plane 11, which is a prerequisite for achieving uniform polishing and high-precision surface shape control. The coplanarity ensures that the abrasive and polishing agent can act on the mirror surface 101 to be polished uniformly during the polishing process, avoiding uneven polishing or local over-polishing caused by position deviation.

[0063] As Figure 3 and Figure 6 shown, in this embodiment, a connection hole communicating with the installation groove 12 is provided on the tooling base 10. After a part of the assembly is inserted into the installation groove 12, by screwing a bolt into the connection hole and connecting it to the auxiliary structure 20 housing of the assembly, the limiting and fixing of the assembly can be realized, ensuring that there is no shaking during the polishing process.

[0064] Specifically, the polishing tooling further includes a limiting component 30. The limiting component 30 includes two fixing plates 31. One ends of the two fixing plates 31 are respectively used for connecting with the tooling base 10, and the other ends of the two fixing plates 31 are respectively used for connecting with the opposite sides of the assembly, so as to limit the assembly relative to the tooling base 10. With such a setting, the two fixing plates 31 in the limiting component 30 can ensure the stable connection between the other parts of the assembly and the tooling base 10 after a part of the assembly is inserted into the installation groove 12, avoiding the movement or vibration of the assembly during the polishing process, thereby maintaining the precise coplanarity between the mirror surface 101 to be polished of the product 100 to be processed and the tooling plane 11, and ensuring the uniformity and stability of the polishing effect.

[0065] Specifically, the auxiliary structure 20 includes two auxiliary plates 21. The product to be processed 100 is disposed between the two auxiliary plates 21 and is respectively arranged in a manner adapted to the two auxiliary plates 21, so as to form an assembly by connecting the two auxiliary plates 21, where the two auxiliary plates 21 and the product to be processed 100 form an assembly; wherein, the assembly is of a square structure. With the above arrangement, the design of the assembly can ensure the precise position of the product to be processed 100 during the polishing process, reduce displacement and vibration under the action of high-speed rotation and polishing pressure, improve the stability and positioning accuracy of the polishing process, and thus ensure the consistency and controllability of the mirror polishing effect. The use of the auxiliary plates 21 simplifies the clamping and positioning process of the product to be processed 100. The operator can quickly assemble the product to be processed 100 with the two auxiliary plates 21 to form an assembly, reducing the clamping time, improving the production efficiency and the smoothness of the production line. Among them, the design of the auxiliary plates 21 can be adjusted according to the sizes and shapes of different products to be processed 100, with wide adaptability, ensuring good positioning and stable assembly of different products during the polishing process, and improving the versatility of the polishing tooling. And forming an assembly of a square structure can better control the contact area and pressure distribution during the polishing process, which helps to optimize the polishing parameters.

[0066] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0067] The method for polishing a metal square mirror includes: obtaining a product 100 to be processed, and preprocessing the product 100 to be processed to remove oil stains and impurities on the surface of the product 100 to be processed; obtaining a first polishing agent, and using a first polishing device to perform rough polishing on the product 100 to be processed with the first polishing agent under a first set of conditions to remove unevenness and scratches on the surface of the product 100 to be processed; obtaining a second polishing agent, and using a second polishing device to perform fine polishing on the product 100 to be processed with the second polishing agent under a second set of conditions to reduce the surface roughness of the product 100 to be processed to obtain a final product; wherein, the first set of conditions includes a preset polishing pressure, a preset polishing disc rotation speed, and a preset polishing time of the first polishing device; the second set of conditions includes a preset polishing pressure, a preset polishing disc rotation speed, and a preset polishing time of the second polishing device. In this way, the preprocessing stage effectively removes oil stains and impurities on the surface of the metal square mirror, creating a good foundation for subsequent rough polishing and fine polishing. The rough polishing process removes obvious unevenness and scratches on the surface, and the fine polishing process further reduces the surface roughness, making the surface of the final product reach nanoscale smoothness, significantly improving the mirror reflectivity and surface optical properties, and thus solving the problem of insufficient polishing accuracy of the polishing technology for metal square mirrors in the prior art. By precisely controlling the first set of conditions and the second set of conditions respectively, that is, the polishing pressure, the polishing disc rotation speed, and the polishing time, this polishing method can ensure uniform and high-precision polishing on the entire surface of the metal square mirror, optimize the polishing process, and compared with the prior art, the entire polishing process time is shortened by 20% - 30%, and unnecessary processes and time are reduced, making the entire polishing process more efficient. Moreover, the improvement of the degree of automation reduces the dependence on manpower, reduces operation errors, thereby improving the consistency and stability of production, and indirectly reducing the production cost.

[0068] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0069] Unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0070] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present invention; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0071] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above", etc. can be used here to describe the spatial positional relationship between a device or feature shown in the drawing and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the drawing of the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientation of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0072] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without otherwise stating, the above words have no special meaning, and thus should not be construed as limiting the protection scope of the present invention.

[0073] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for polishing a metal square mirror, characterized in that, Including: Obtain the product to be processed (100), and preprocess the product to be processed (100) to remove oil stains and impurities on the surface of the product to be processed (100); Obtain a first polishing agent, and use a first polishing device to perform rough polishing on the product to be processed (100) with the first polishing agent under a first set of conditions to remove unevenness and scratches on the surface of the product to be processed (100); Obtain a second polishing agent, and use a second polishing device to perform fine polishing on the product to be processed (100) with the second polishing agent under a second set of conditions to reduce the surface roughness of the product to be processed (100) to obtain a final product; Wherein, the first set of conditions includes the preset polishing pressure, preset polishing disc rotation speed and preset polishing time of the first polishing device; the second set of conditions includes the preset polishing pressure, preset polishing disc rotation speed and preset polishing time of the second polishing device.

2. The method for polishing a metal square mirror according to claim 1, wherein The preprocessing of the product to be processed (100) includes: Obtain a cleaning solution, and use an ultrasonic cleaner to clean the product to be processed (100) at a preset cleaning time and a preset ultrasonic frequency; Wherein, the cleaning solution is an organic solvent or deionized water; and / or, the preset cleaning time of the ultrasonic cleaner is 10 to 15 minutes; and / or, the preset ultrasonic frequency of the ultrasonic cleaner is 40 to 60 kHz.

3. The method for polishing a metal square mirror according to claim 2, wherein After using the ultrasonic cleaner to clean the product to be processed (100) under a third set of conditions, it includes: Obtain a pickling solution, and perform activation treatment on the surface of the product to be processed (100) within a set treatment time; Wherein, the pickling solution is obtained by mixing dilute sulfuric acid and dilute hydrochloric acid in a ratio of 3:1; and / or, the set treatment time is 3 to 5 minutes.

4. The method for polishing a metal square mirror according to claim 1, characterized in that The obtaining of the first polishing agent includes: Obtain a first abrasive and a first polishing liquid, and mix the first abrasive and the first polishing liquid in a ratio of 1:3 to obtain the first polishing agent; Wherein, the first abrasive is a diamond abrasive with a particle size ranging from 100 to 200 mesh; and / or, the first polishing liquid is composed of water, a surface activator and an anti-rust agent.

5. The method for polishing a metal square mirror according to claim 1, wherein The preset polishing pressure of the first polishing device is 0.2 to 0.3 MPa; and / or, The preset polishing disc rotation speed of the first polishing device is 500 to 800 r / min; and / or, The preset polishing time of the first polishing device is 30 to 45 minutes.

6. The method for polishing a metal square mirror according to claim 1, characterized in that, The obtaining of the second polishing agent includes: Obtain a second abrasive and a second polishing liquid, and mix the second abrasive and the second polishing liquid in a ratio of 1:3 to obtain the second polishing agent; Wherein, the second abrasive is an alumina abrasive with a particle size ranging from 500 to 1000 mesh; and / or, the second polishing liquid is composed of an organic acid, a corrosion inhibitor and a lubricant.

7. The method for polishing a metal square mirror according to claim 1, wherein The preset polishing pressure of the second polishing device is 0.05 to 0.1 MPa; and / or, The preset polishing disc rotation speed of the first polishing device is 200 to 300 r / min; and / or, The preset polishing time of the first polishing device is 60 to 90 minutes.

8. The method for polishing a metal square mirror according to claim 1, wherein After obtaining the second polishing agent, before performing fine polishing on the product to be processed (100) with the second polishing agent under the second set conditions, it includes: Select a polishing tooling corresponding to the size and shape of the product to be processed (100); Assemble the product to be processed (100) on the polishing tooling, and make the mirror surface (101) to be polished of the product to be processed (100) coplanar with the tooling plane of the polishing tooling; Wherein, the material of the polishing tooling is the same as that of the product to be processed (100).

9. The method for polishing a metal square mirror according to claim 1, characterized in that, After performing fine polishing on the product to be processed (100) with the second polishing agent under the second set conditions by using the second polishing equipment, it includes: Obtain a rinsing liquid, and use the rinsing liquid to rinse the surface of the product to be processed (100) to remove the residual polishing liquid and abrasive on the surface of the product to be processed (100); Perform a drying process on the product to be processed (100) in a drying oven at a preset processing time and a preset temperature; Spray a nano-level anti-oxidation protective film on the surface of the product to be processed (100) to obtain the final product; Wherein, the rinsing liquid is deionized water; and / or, the preset processing time of the drying oven is 30 to 60 minutes; and / or, the preset temperature of the drying oven is 60 to 80 °C.

10. A polishing tooling, applicable to the metal square mirror polishing method according to any one of claims 1 to 9, characterized in that The polishing tooling includes: A tooling base (10) which is rotatably arranged, and the tooling base (10) has a tooling plane (11); An auxiliary structure (20) for assembling on the product to be processed (100) after rough polishing. The auxiliary structure (20) covers a part of the surface of the product to be processed (100) to form an assembly. The assembly can be selectively installed on the tooling base (10) in a direction perpendicular to the tooling base (10) or in a direction inclined to the tooling base (10), so that the mirror surface (101) to be polished of the product to be processed (100) is coplanar with the tooling plane (11).

11. The polishing tooling according to claim 10, wherein, An installation groove (12) is provided on the tooling base (10), and an installation opening (120) is provided at the bottom of the installation groove (12). A part of the assembly extends into the installation groove (12) and is arranged in cooperation with the installation groove (12), so that the mirror surface (101) to be polished of the product to be processed (100) is located at the installation opening (120) and is coplanar with the tooling plane (11); Wherein, the installation groove (12) extends from the notch to the bottom in a direction perpendicular to the tooling base (10) or in a direction inclined to the tooling base (10).

12. The polishing tooling according to claim 10, wherein The polishing tooling further includes: A limiting component (30), including two fixing plates (31). One ends of the two fixing plates (31) are respectively used for connecting with the tooling base (10), and the other ends of the two fixing plates (31) are respectively used for connecting with the opposite sides of the assembly, so as to limit the assembly relative to the tooling base (10).

13. The polishing tooling according to claim 10, characterized in that, The auxiliary structure (20) includes: Two auxiliary plates (21), the product to be processed (100) is arranged between the two auxiliary plates (21) and is respectively arranged in an adapted manner with the two auxiliary plates (21), so as to form the assembly by connecting the two auxiliary plates (21) such that the two auxiliary plates (21) and the product to be processed (100) form the assembly; Wherein, the assembly is of a square structure.

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