Method and apparatus for cutting glass

Abstract

The application provides a glass cutting method and a cutting device, and relates to the technical field of glass processing. The glass cutting method comprises the following steps: fixing the glass on a carrier; controlling a cutting shaft provided with a first cutter to cut the glass, so as to cut side surfaces on at least two sides of the glass; rotating the glass and fixing the glass on a rotating fixing piece, so as to rotate one side surface cut by the glass to a direction away from the carrier; controlling a cutting shaft provided with a second cutter to polish the one side surface of the glass; rotating the glass again and fixing the glass on the rotating fixing piece, so as to rotate another side surface cut by the glass to a direction away from the carrier; and controlling the cutting shaft provided with the second cutter to polish the another side surface of the glass. The glass cutting method and the cutting device can accurately and controllably increase and optimize the roughness of the side surfaces of the glass, are beneficial to improving the processing efficiency, and can improve the consistency of side surface processing by reducing clamping errors.

Description

Technical Field

[0001] This invention relates to the field of glass processing technology, and more specifically, to a glass cutting method and cutting equipment. Background Technology

[0002] As semiconductor technology advances towards higher precision and miniaturization, optical glass has become an indispensable core material for optoelectronic devices (such as microelectromechanical systems and micro-optical components). During manufacturing, optical glass typically requires precision dicing to achieve specific shapes. In this process, the roughness of the glass's side surface (the diced surface) becomes a crucial microscopic morphology indicator determining product performance, system compatibility, and the feasibility of subsequent processing. In specific applications, purposefully and controllably increasing the side surface roughness is essential for meeting assembly, bonding, and specific optical functions, and plays a key role in ensuring the stability of upstream and downstream processes and improving the final product yield.

[0003] Specifically, increasing the surface roughness of glass is a core process requirement in several cutting-edge fields: In semiconductor manufacturing and packaging (such as MEMS (Micro-Electro-Mechanical Systems) and micro-optical components): a moderately rough surface can enhance the adhesion and penetration of cleaning agents, effectively removing processing residues; it can also provide a larger effective bonding area and friction in bonding processes, thereby improving bonding strength and packaging reliability. In consumer electronics (such as smartphone cameras and AR / VR display modules): roughening non-optical functional surfaces can reduce stray light reflection and improve image quality; it can enhance the adhesion of subsequent optical coatings and prevent film peeling; it can also improve positioning accuracy and reduce gaps in precision assembly through micro-interlocking, meeting the requirements of highly integrated designs. In high-end optics and special fields (such as medical endoscopes and aerospace cameras): precisely controlled surface roughness can achieve specific scattering and guidance of light, optimizing imaging; at the same time, the process helps release and disperse residual stress introduced by processing, reducing the difficulty of subsequent polishing and other finishing processes, and improving the crack resistance and long-term stability of glass in extreme environments.

[0004] Despite the increasingly clear and urgent needs mentioned above, existing conventional cutting processes (such as scriber cutting and laser hidden cutting) have significant limitations. They primarily pursue smooth surfaces and low damage, making it difficult to precisely, stably, and repeatably control the increase in roughness, its uniformity of distribution, and morphological characteristics. This easily leads to defects such as substandard roughness, uneven distribution, or microcracks, not only failing to achieve the expected functional improvements but also potentially negatively impacting subsequent critical processes such as cleaning, coating, and bonding, ultimately resulting in poor product compatibility and low yield.

[0005] Therefore, there is an urgent need for a cutting method and cutting equipment that can accurately and controllably increase and optimize the roughness of the glass surface to adapt to the functional requirements of different application scenarios and ensure the stability of the preceding and following processes. Summary of the Invention

[0006] This application proposes a glass cutting method and cutting equipment that can accurately and controllably increase and optimize the surface roughness of glass to adapt to the functional requirements of different application scenarios and ensure the stability of the preceding and following processes.

[0007] Therefore, the first objective of this application is to provide a method for cutting glass.

[0008] The second objective of this application is to provide a cutting device.

[0009] In view of the above, the first aspect of this application provides a method for cutting glass, using a cutting device. The cutting device includes a main body, a platform, a cutting shaft, a cutting tool, and a rotating fixing member. The platform is mounted on the main body, and the cutting shaft is mounted on the main body for driving the cutting tool to cut. The cutting tool is mounted on the cutting shaft and includes a first cutting tool and a second cutting tool. The rotating fixing member is movably mounted on the platform for fixing the cut glass. The cutting method includes: fixing the glass on the platform; controlling the cutting shaft with the first cutting tool to cut the glass to cut side surfaces on at least two sides of the glass; rotating the glass and fixing it on the rotating fixing member to rotate one side surface cut from the glass away from the platform; controlling the cutting shaft with the second cutting tool to grind one side surface of the glass; rotating the glass again and fixing it on the rotating fixing member to rotate the other side surface cut from the glass away from the platform; and controlling the cutting shaft with the second cutting tool to grind the other side surface of the glass.

[0010] In this technical solution, a glass cutting method is provided using a cutting device. The cutting device includes a platform for supporting and fixing the glass, at least one cutting shaft for mounting and driving a cutting tool, and a rotating fixing member. The cutting tool includes a first cutting tool for performing a cutting operation and a second cutting tool for performing a grinding operation. The rotating fixing member is used to fix the glass after it has been cut by the first cutting tool. The specific operation process is as follows: First, the glass plate to be processed is firmly fixed on the platform. Then, the cutting shaft with the first cutting tool is driven, causing the first cutting tool to move along a preset cutting direction to cut the glass. The purpose of this cutting is to form at least two separate parts on the glass, thereby exposing at least two newly formed glass side surfaces. After the cutting is completed, the glass is rotated and fixed on the rotating fixing member, and one of the newly formed side surfaces is adjusted to face upwards (i.e., away from the platform) to facilitate subsequent processing. Then, the cutting shaft with the second cutting tool is controlled to drive the second cutting tool to perform contact processing, i.e., grinding, on the upward-facing glass side surface to improve the surface roughness. Next, rotate the glass again and fix it on the rotating fixture. Turn the other newly cut side upward as well, and use the second tool to grind the side. Grinding the side of the glass with the second tool can precisely and controllably optimize the roughness of the glass side.

[0011] In any of the above technical solutions, optionally, the cutting axis includes a first cutting axis and a second cutting axis. After the step of fixing the glass on the stage, the glass cutting method further includes: mounting a first cutter on the first cutting axis and mounting a second cutter on the second cutting axis.

[0012] In this technical solution, the cutting axis specifically includes a first cutting axis and a second cutting axis that are independently controlled. After the glass is fixed on the platform, the operator or an automatic tool-loading mechanism installs a first tool, such as a roughing wheel, on the first cutting axis to perform the cutting task; simultaneously, a second tool, such as a finer-grit diamond wheel or resin-bonded wheel, is installed on the second cutting axis to prepare for the subsequent grinding process. Thus, the first cutting axis and the first tool constitute a cutting unit, and the second cutting axis and the second tool constitute a grinding unit. In the cutting process, the first cutting axis drives the first tool to complete the cutting; in the grinding process, the second cutting axis drives the second tool to perform the grinding. By using two independent cutting axes and tools, parallel preparation or rapid switching between cutting and grinding can be achieved, avoiding excessive downtime caused by frequent tool changes during processing, thereby further improving overall processing efficiency.

[0013] In any of the above technical solutions, optionally, the cutting axis includes a first cutting axis and a second cutting axis. After the step of fixing the glass on the stage, the glass cutting method further includes: a first cutting tool is mounted on the first cutting axis and a first cutting tool is mounted on the second cutting axis.

[0014] In this technical solution, the cutting axis includes a first cutting axis and a second cutting axis. During initial tooling, the first and second cutting axes are equipped with identical first cutting tools, such as two cutting tools of the same specification. During glass cutting, the first and second cutting axes can be controlled to move synchronously or asynchronously, allowing the two first cutting tools to cut the glass simultaneously or to perform different cutting tasks. By configuring two identical cutting tools, the efficiency of the cutting process can be significantly improved, making it particularly suitable for mass production or for simultaneously processing multiple locations on the glass.

[0015] In any of the above technical solutions, optionally, the cutting start point of the first cutting axis is located in the first region, and the cutting start point of the second cutting axis is located in the second region.

[0016] In this technical solution, the starting points of the cutting paths of the two first cutting tools (mounted on the first and second cutting axes respectively) are different. Specifically, the first cutting axis is controlled to start cutting from a first region, and the second cutting axis is controlled to start cutting from a second region. The two tools move in the same direction from different starting points, jointly completing the processing of the same cutting path. This optimizes the stress distribution during the cutting process, especially for longer or thicker glass, effectively reducing edge chipping and crack propagation at the cutting end, and improving the quality and yield of the cut surface. Furthermore, cutting with two tools speeds up the cutting process. Specifically, the first region is the area where the length from the glass in the cutting direction to any end is greater than one-third and less than or equal to two-thirds of the overall length of the glass in the cutting direction. The second region is located on the outer side of the glass end face, where the length from the center of the cutting tool to the glass end face along the cutting direction is greater than or equal to the radius of the cutting tool and less than the diameter of the cutting tool.

[0017] In any of the above technical solutions, optionally, before the step of controlling the cutting shaft with the second tool mounted to grind one side of the glass, the glass cutting method further includes: removing the first tool from the first cutting shaft and the second cutting shaft, and mounting the second tool on the first cutting shaft and the second cutting shaft.

[0018] In this technical solution, after cutting the glass using two first cutters, the first cutters on both the first and second cutting shafts need to be removed. Then, the second cutters are installed on the first and second cutting shafts respectively. Afterward, the equipment has the ability to grind the sides of the glass using two second cutters. This clarifies the specific operational procedure for switching between cutting and grinding functions on the same equipment, ensuring the continuity of the process and the complete functionality of the equipment.

[0019] In any of the above technical solutions, optionally, after the step of mounting the second tool on the first cutting axis and the second cutting axis, the glass cutting method further includes: grinding the second tool on the first cutting axis and the second tool on the second cutting axis.

[0020] In this technical solution, after the second cutting tools are installed on the first and second cutting axes, glass grinding is not performed immediately. Instead, a sharpening operation is first performed on these two newly installed second cutting tools. Here, "sharpening" specifically refers to the finishing and sharpening of the cutting edge or abrasive layer of the tool itself; it is a pre-treatment step for the tools. New or replaced tools may have manufacturing tolerances or microscopic defects. By using a dedicated sharpening procedure (e.g., using a sharpening stone or dresser to contact the tool with specific parameters), it can be ensured that the cutting edges of the two second cutting tools are consistent and sharp. Pre-treating the second cutting tools used for finishing ensures that the processing conditions (such as cutting force and grinding effect) on both sides of the glass are as equal as possible during subsequent grinding, thereby obtaining a uniform and consistent side surface finish and improving the stability of product quality.

[0021] Optionally, in any of the above technical solutions, the circumference of the second tool is used to polish the side surface of the glass.

[0022] In this technical solution, the circumferential surface of the second tool (i.e., the annular area on the outer edge of the tool's circumference) is used to contact and grind the side surface of the glass. This means that the grinding process is achieved through the lateral feed and rotational motion of the second tool, similar to the principle of "side milling" or "external cylindrical grinding," rather than using the end face of the second tool for "cutting" or "end face grinding." The second tool rotates at high speed, and the circumferential side surface moves relative to the upward-facing glass side surface. The glass material is removed through the scraping and grinding action of the abrasive grains, thereby reducing the surface roughness. Compared with end face machining, when grinding using the tool side, the contact area and linear velocity between the tool and the glass can be better controlled, which is conducive to achieving a more stable and finer surface finish. This is a key technical feature for achieving precision grinding of glass sides.

[0023] In any of the above technical solutions, optionally, the first tool and the second tool are of different types, and the mesh count of the second tool is less than that of the first tool.

[0024] In this technical solution, the material properties of the first and second cutting tools are specifically defined. The first and second cutting tools are of different models, and the grit number (i.e., abrasive grain size) of the second cutting tool is specifically limited to be smaller than that of the first cutting tool. In abrasive standards, a smaller grit number indicates coarser abrasive grains. The abrasive grains of the second cutting tool are coarser than those of the first cutting tool used for cutting. The first cutting tool (high grit, fine grains) is responsible for relatively precise cutting, minimizing the cutting damage layer; while the second cutting tool (low grit, coarse grains) is responsible for efficient rough grinding, quickly removing the cutting damage layer and achieving a certain shape accuracy, giving the glass a certain degree of roughness on the side surface.

[0025] Optionally, in any of the above technical solutions, before the step of controlling the cutting axis equipped with the first tool to cut the glass, the glass cutting method may further include grinding the first tool.

[0026] In this technical solution, before the cutting axis equipped with the first tool cuts the glass, the cutting method also includes a step of grinding (i.e., sharpening) the first tool itself. Before using the first tool to perform the main cutting task, the burrs on the cutting edge are removed by sharpening, or the diamond abrasive grains are fully exposed, bringing the tool to its optimal sharpness. Pre-sharpening the first tool ensures a smooth cutting process and low cutting resistance, thereby reducing micro-cracks and edge chipping in the glass during cutting from the source. This lays a good foundation for obtaining high-quality glass sides, and is an important pre-treatment step to improve overall processing quality.

[0027] The second aspect of this application provides a cutting device, comprising: a main body, a platform, a cutting shaft, a cutting tool, and a rotating fixing member. The platform is disposed on the main body, and the cutting shaft is disposed on the main body for driving the cutting tool to perform cutting. The cutting tool is mounted on the cutting shaft and includes a first cutting tool and a second cutting tool. The rotating fixing member is movably disposed on the platform for fixing the cut glass, thereby implementing the glass cutting method as provided in the first aspect.

[0028] Furthermore, the cutting axis includes a first cutting axis and a second cutting axis.

[0029] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0030] To more clearly illustrate the embodiments of this application or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0031] Figure 1 This is a schematic flowchart of a glass cutting method according to an embodiment of this application;

[0032] Figure 2 This is one of the structural schematic diagrams of a rotating fixing member according to an embodiment of this application;

[0033] Figure 3 This is a schematic diagram of the first and second regions according to an embodiment of this application;

[0034] Figure 4 This is a second schematic diagram of the structure of a rotating fixing member according to an embodiment of this application;

[0035] Figure 5 This is a third schematic diagram of the structure of a rotating fixing member according to an embodiment of this application;

[0036] Figure 6 This is a schematic diagram of the boundary of glass particles after being cut according to the cutting method of this application;

[0037] Figure 7 It is a roughness curve of the glass side surface after cutting according to the cutting method of this application;

[0038] Figure 8 This is a schematic flowchart of a glass cutting process according to an embodiment of this application.

[0039] Among them, 1 is the rotating fixing part, 2 is the placement hole, 3 is the glass, 32 is the glass end face, 4 is the first area, and 5 is the second area. Detailed Implementation

[0040] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0041] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0042] A first aspect of the present invention provides a method for cutting glass, for use in a cutting device. The cutting device includes a main body, a platform, a cutting shaft, a cutting tool, and a rotating fixing member. The platform is disposed on the main body, and the cutting shaft is disposed on the main body for driving the cutting tool to perform cutting. The cutting tool is mounted on the cutting shaft and includes a first cutting tool and a second cutting tool. The rotating fixing member is movably disposed on the platform for fixing the cut glass. Figure 1 As shown, glass cutting methods include:

[0043] S101: Fix the glass onto the platform;

[0044] S103: Control the cutting axis equipped with the first tool to cut the glass to cut side surfaces on at least two sides of the glass;

[0045] S105: Rotate the glass and fix it on the rotating fixture to turn one side of the glass cut away from the stage;

[0046] S107: Control the cutting axis equipped with the second tool to grind one side of the glass;

[0047] S109: Rotate the glass again and fix it on the rotating fixture to turn the other side of the glass cut away from the stage;

[0048] S111: Controls the cutting axis equipped with the second tool to polish the other side of the glass.

[0049] In this embodiment, a glass cutting method is provided using a cutting device. The cutting device includes a platform for supporting and fixing the glass, at least one cutting shaft for mounting and driving a cutting tool, and a rotating fixing member. The cutting tool includes a first cutting tool for performing a cutting operation and a second cutting tool for performing a grinding operation. The rotating fixing member is used to fix the glass after it has been cut by the first cutting tool. The specific operation process is as follows: First, the glass plate to be processed is firmly fixed on the platform. Then, the cutting shaft with the first cutting tool is driven, causing the first cutting tool to move along a preset cutting direction to cut the glass. The purpose of this cutting is to form at least two separate parts on the glass, thereby exposing at least two newly formed glass side surfaces. After the cutting is completed, the glass is rotated and fixed on the rotating fixing member, and one of the newly formed side surfaces is adjusted to face upwards (i.e., away from the platform) to facilitate subsequent processing. Then, the cutting shaft with the second cutting tool is controlled to drive the second cutting tool to perform contact processing, i.e., grinding, on the upward-facing glass side surface to improve the surface roughness. Next, rotate the glass again and fix it on the rotating fixture. Turn the other newly cut side upward as well, and use the second tool to grind the side. Grinding the side of the glass with the second tool can precisely and controllably optimize the roughness of the glass side.

[0050] In any of the above embodiments, optionally, the cutting axis includes a first cutting axis and a second cutting axis. After the step of fixing the glass on the stage, the cutting method further includes: mounting a first cutter on the first cutting axis and mounting a second cutter on the second cutting axis.

[0051] In this embodiment, the cutting axis specifically includes a first cutting axis and a second cutting axis that are independently controlled. After the glass is fixed on the platform, the operator or an automatic tool-loading mechanism installs a first tool on the first cutting axis; simultaneously, a second tool, such as a finer-grit diamond wheel or resin-bonded wheel for finishing, is installed on the second cutting axis, preparing for the subsequent grinding process. Thus, the first cutting axis and the first tool constitute a cutting unit, and the second cutting axis and the second tool constitute a grinding unit. In the cutting process, the first cutting axis drives the first tool to complete the cutting; in the grinding process, the second cutting axis drives the second tool to perform the grinding. By using two independent cutting axes and tools, parallel preparation or rapid switching between cutting and grinding can be achieved, avoiding excessive downtime due to frequent tool changes during processing, thereby further improving overall processing efficiency.

[0052] In any of the above embodiments, optionally, the cutting axis includes a first cutting axis and a second cutting axis. After the step of fixing the glass on the stage, the cutting method further includes: a first cutter is mounted on the first cutting axis and a first cutter is mounted on the second cutting axis.

[0053] In this embodiment, the cutting axis includes a first cutting axis and a second cutting axis. During initial tooling, the same first cutting tool is mounted on both the first and second cutting axes. During glass cutting, the first and second cutting axes can be controlled to move synchronously or asynchronously, allowing both first cutting tools to cut the glass simultaneously or to perform different cutting tasks. By configuring two identical cutting tools, the efficiency of the cutting process can be significantly improved, making it particularly suitable for mass production or for simultaneously processing multiple locations on the glass.

[0054] In any of the above embodiments, optionally, as Figure 3 As shown, the cutting start point of the first cutting axis is located in the first region 4, and the cutting start point of the second cutting axis is located in the second region 5.

[0055] In this embodiment, the two first cutting tools (mounted on the first and second cutting axes respectively) have different starting points. Specifically, the first cutting axis is controlled to start cutting from the first region 4, and the second cutting axis is controlled to start cutting from the second region 5. The two tools move in the same direction from different starting points, completing the same cutting path. This optimizes the stress distribution during the cutting process, especially for longer or thicker glass, effectively reducing edge chipping and crack propagation at the cutting end, and improving the quality and yield of the cut surface. Furthermore, cutting with two tools speeds up the cutting process. Specifically, the first region is the area where the length of the glass 3 from any end in the cutting direction is greater than one-third and less than or equal to two-thirds of the overall length of the glass 3 in the cutting direction. The second region is located outside the glass end face 32, where the length from the center of the cutting tool along the cutting direction to the glass end face 32 is greater than or equal to the radius of the cutting tool and less than the diameter of the cutting tool.

[0056] In any of the above embodiments, optionally, before the step of controlling the cutting shaft on which the second tool is mounted to grind one side of the glass, the cutting method further includes: removing the first tool from the first cutting shaft and the second cutting shaft, and mounting the second tool on the first cutting shaft and the second cutting shaft.

[0057] In this embodiment, after cutting the glass using two first cutters, the first cutters on both the first and second cutting shafts need to be removed. Then, second cutters are installed on the first and second cutting shafts respectively. Afterward, the equipment has the ability to grind the sides of the glass using two second cutters. This clarifies the specific operational procedure for switching between cutting and grinding functions on the same equipment, ensuring process continuity and the complete functionality of the equipment.

[0058] In any of the above embodiments, optionally, after the step of mounting the second tool on the first cutting shaft and the second cutting shaft, the cutting method further includes: grinding the second tool on the first cutting shaft and the second tool on the second cutting shaft.

[0059] In this embodiment, after the second cutter is installed on the first and second cutting axes, glass grinding is not performed immediately. Instead, a sharpening operation is first performed on the two newly installed second cutters. Here, "sharpening" specifically refers to the finishing and sharpening of the cutting edge or abrasive layer of the cutter itself; it is a pre-treatment step for the cutters. New or replaced cutters may have manufacturing tolerances or microscopic defects. By using a dedicated sharpening procedure (e.g., using a sharpening stone or dresser to contact the cutter with specific parameters), it can be ensured that the cutting edges of the two second cutters are consistent and sharp. Pre-treating the second cutters used for finishing ensures that the processing conditions (such as cutting force and grinding effect) on both sides of the glass are as equal as possible during subsequent grinding, thereby obtaining a uniform and consistent side surface finish and improving the stability of product quality.

[0060] In any of the above embodiments, optionally, the circumference of the second tool is used to polish the side surface of the glass.

[0061] In this embodiment, the circumferential surface of the second tool is used to contact and grind the side surface of the glass. This means that the grinding process is achieved through the lateral feed and rotational motion of the second tool, similar to the principle of "side milling" or "external cylindrical grinding," rather than using the end face of the second tool for "cutting" or "end face grinding." The second tool rotates at high speed, and the circumferential side surface moves relative to the upward-facing glass side surface. The glass material is removed through the scraping and grinding action of the abrasive grains, thereby reducing the surface roughness. Compared with end face machining, when grinding with the side of the tool, the contact area and linear velocity between the tool and the glass can be better controlled, which is conducive to achieving a more stable and finer surface finish. This is a key technical feature for achieving precision grinding of glass sides.

[0062] In any of the above embodiments, optionally, the first cutting tool and the second cutting tool are of different types, and the mesh count of the second cutting tool is less than that of the first cutting tool.

[0063] In this embodiment, the material properties of the first and second cutting tools are specifically defined. The first and second cutting tools are of different models, and the grit number (i.e., abrasive grain size) of the second cutting tool is specifically limited to be smaller than that of the first cutting tool. In abrasive standards, a smaller grit number indicates coarser abrasive grains. The abrasive grains of the second cutting tool are coarser than those of the first cutting tool used for cutting. The first cutting tool (high grit, fine grains) is responsible for relatively precise cutting, minimizing the cutting damage layer; while the second cutting tool (low grit, coarse grains) is responsible for efficient rough grinding, quickly removing the cutting damage layer and achieving a certain shape accuracy. By adopting a "fine cutting and rough grinding" strategy instead of "fine cutting and fine grinding," the efficiency of the grinding process can be improved by utilizing the higher material removal rate of the coarse-grained tool while ensuring the final side surface quality. This is an optimization of the traditional processing sequence, balancing quality and efficiency.

[0064] In any of the above embodiments, optionally, before the step of controlling the cutting axis equipped with the first tool to cut the glass, the cutting method further includes grinding the first tool.

[0065] In this embodiment, before controlling the cutting axis equipped with the first tool to cut the glass, the cutting method also includes a step of sharpening the first tool (i.e., honing). The object of this sharpening is the first tool itself. Before using the first tool to perform the main cutting task, burrs on the cutting edge are removed by the sharpening operation, or the diamond abrasive grains are fully exposed, bringing the tool to its optimal sharpness. Pre-sharpening the first tool ensures a smooth cutting process and low cutting resistance, thereby reducing micro-cracks and edge chipping generated during glass cutting from the source. This lays a good foundation for obtaining high-quality glass sides, and is an important pre-treatment step for improving overall processing quality.

[0066] The second aspect of this application provides a cutting device, comprising: a main body, a platform, a cutting shaft, a cutting tool, and a rotating fixing member. The platform is disposed on the main body, and the cutting shaft is disposed on the main body for driving the cutting tool to perform cutting. The cutting tool is mounted on the cutting shaft and includes a first cutting tool and a second cutting tool. The rotating fixing member is movably disposed on the platform for fixing the cut glass, thereby implementing the glass cutting method as provided in the first aspect.

[0067] Furthermore, the cutting axis includes a first cutting axis and a second cutting axis.

[0068] The cutting equipment includes a dicing machine, specifically a grinding wheel dicing machine, with the first cutting tool including a grinding wheel and the second cutting tool including a grinding wheel.

[0069] 1. The method of physical cutting with a dicing machine combined with precision grinding does not cause high-temperature melting or chemical corrosion damage to the glass material, and only produces a small amount of glass fragments. Physical cutting produces less pollution, which can reduce the difficulty of sewage discharge and the amount of pollutants emitted.

[0070] 2. The side roughness control accuracy is better than that of existing conventional processes. It can stably improve the roughness to the preset standard with small fluctuations. The product has high dimensional accuracy, good consistency and strong practicality after dicing.

[0071] 3. The operation process is simple and standardized, and the process flow is smooth and continuous. There is no need to add complicated auxiliary equipment, which can reduce the subsequent additional polishing and finishing processes. It is suitable for industrial mass production and can reduce the risk of human error.

[0072] 4. The entire dicing process uses a reasonable amount of consumables (grinding wheel blades, UV film, cutting fluid) and has a high cost-performance ratio. Subsequent processes are simplified, reducing labor costs. The initial equipment debugging and subsequent maintenance costs are low. There is no need to build complex monitoring equipment, which can effectively reduce the overall production cost.

[0073] 5. From the perspective of material compatibility, this method is compatible with glass processing of various specifications and materials. The cutting parameters and blade specifications can be flexibly adjusted as needed, and it can be flexibly adapted to cutting glass materials with different thicknesses and roughness requirements.

[0074] 6. From the perspective of cutting quality, this method can effectively avoid common problems such as roughness fluctuations and dimensional deviations through differentiated design of two grinding processes and pretreatment such as film fixation, ensuring stable cutting quality, creating favorable conditions for subsequent processes such as coating, bonding, and assembly, reducing scrap caused by substandard quality, improving the utilization rate of glass materials, and reducing production losses.

[0075] 7. The process has good stability and a low failure rate during long-term operation.

[0076] like Figure 2 , Figure 4 and Figure 5 As shown, after the first cut is completed, when taking the glass particles, the glass particles are rotated 90° and placed on the rotating fixing part 1; the detailed dimensions of the rotating fixing part 1 are the dimensions of the glass particles after the first cut is rotated 90°.

[0077] Rotating fixing part 1 can be used in two ways:

[0078] 1. Each glass particle has a placement hole 2 underneath, which is connected to the gas path. After the glass particles are cut for the first time, they are placed into all the placement holes 2 and then held in place by the negative pressure generated by the vacuum generator of the equipment; then the cutting is carried out.

[0079] 2. After the first cut, the cut glass particles are flipped over and placed on the rotating fixing part 1. After it is full, the whole thing is covered with film and then placed on the equipment for cutting.

[0080] This method aims to solve the problem of accurately and consistently improving and effectively controlling the side roughness of glass when using only a dicing machine. The solution uses a domestically produced dicing machine as the implementation platform. This equipment has three mutually perpendicular motion axes (X, Y, and Z) and two axes (Z1 and Z2) for mounting cutting tools. A detailed technical solution is provided, based on the complete dicing operation process, focusing on the stable improvement and precise control of the glass side roughness throughout the entire process. The specific operation steps are as follows:

[0081] A: Preparation before cutting – Applying a film to the glass material. To accurately improve the side roughness of the glass lens and ensure its stability, a pre-treatment of the glass lens raw material is required before cutting. A PET UV film is selected and evenly applied to the surface of the glass lens raw material, ensuring the film is bubble-free, wrinkle-free, and tightly adhered. This PET UV film has excellent support properties, effectively constraining the minute displacement of the glass material during subsequent dicing, significantly improving the dimensional accuracy of subsequent cutting processes, thus laying a solid foundation for the uniform improvement of side roughness (focusing on side roughness optimization; back-side dicing quality will not be discussed further). After applying the film, the UV-coated glass material is placed stably on the dicing machine's processing table and firmly fixed using the dicing machine's fixing mechanism, ensuring the glass material is accurately positioned without loosening or shifting. This prevents deviations in side roughness caused by material displacement during subsequent cutting, a crucial prerequisite for achieving stable improvement in side roughness.

[0082] B: Tool Mounting Operation. Based on the preset roughness improvement requirements for the glass lens side surface, accurately select the appropriate grinding wheel insert specifications, including insert thickness, diamond grit size (mesh count), and bonding agent type. The main hard material of the grinding wheel insert is diamond; different grit sizes correspond to different diamond particle sizes, directly determining the degree of roughness improvement on the glass side surface after subsequent cutting. After selection, use the Z1 and Z2 tool axes provided with the dicing machine for tool mounting. During tool mounting, strictly follow the operating procedures, accurately installing the grinding wheel insert on the tool axes, ensuring correct installation angles and secure fixation. Depending on actual processing efficiency and roughness control requirements, two grinding wheel inserts of the same specification can be installed on the Z1 and Z2 axes to achieve synchronous cutting and improve processing efficiency; alternatively, two grinding wheel inserts of different thicknesses or grit sizes can be installed to flexibly adapt to diverse roughness improvement needs. After tool mounting, carefully check the installation firmness and coaxiality of the inserts to avoid loosening, offset, or shaking during subsequent cutting, which would affect the roughness control accuracy.

[0083] C: Grinding Operation (for particle cutting). After the blade is loaded, the first grinding operation is performed. This grinding serves the subsequent glass particle cutting and can be done using a simplified grinding process without complex parameter adjustments. Select a grinding plate compatible with the current grinding wheel blade and fix it in the preset position on the dicing machine. After adjusting the equipment parameters, start the grinding program to quickly grind the grinding wheel blade. During the grinding process, focus on ensuring the blade surface is sharp, free of obvious defects and burrs, so that it can successfully complete the subsequent glass particle cutting operation. This also ensures the dimensional accuracy of the particle cutting, indirectly supporting the stable improvement of the subsequent side roughness. After grinding is completed, close the program and prepare for the particle cutting process.

[0084] D: Glass Particle Cutting. After the initial grinding, keep the current grinding wheel and blade specifications unchanged. Set reasonable dicing parameters according to the processing requirements of the glass lens, including dicing speed and rotation speed, ensuring that the parameter settings are compatible with the blade specifications and glass material. Start the dicing equipment and continuously spray cooling water containing glass cutting fluid into the cutting area. This cutting fluid effectively improves the stability and continuity of the cutting process, reduces blade wear, and helps control chipping on the glass cut surface, providing a good foundation for subsequent improvement of side roughness. Through the coordinated operation of the X, Y, and Z axes of the dicing machine, the glass material with UV film is cut into particles of a preset size according to the preset trajectory. The status needs to be monitored in real time during the cutting process to ensure that the trajectory is accurate and without deviation, ensuring the consistency of particle size. After cutting, turn off the equipment and carefully remove the cut glass particles from the UV film, avoiding particle breakage or surface scratches during handling. Given that this method adds particle flipping and secondary cutting steps compared to traditional processes, although it will slightly reduce the overall cutting efficiency, it requires the use of special and convenient tooling to assist subsequent operations, thereby improving the ease of operation and ensuring the smooth implementation of the subsequent roughness improvement process.

[0085] E: Particle Flipping and Arrangement, Secondary Grinding, and Secondary Side Cutting. First, the particles are flipped and arranged. Using a specialized fixture, each glass particle is flipped 90° individually, handled gently to avoid collisions and damage. After flipping, the particles are evenly and neatly arranged on the dicing machine's processing table according to a preset layout rule. The particles are then firmly fixed in place by the fixture's positioning mechanism, ensuring a flat, precise, and undisplaced surface to be cut after flipping, preventing uneven side roughness caused by positional deviations during subsequent cutting. Next, the blade is replaced with a pre-specified thick grinding wheel blade. This blade is used for secondary cutting of the glass particle sides, a core step in improving side roughness. Precision grinding is required at this stage because the exposure of diamond particles on the blade surface directly determines the initial roughness stability, thus affecting the final improvement effect. A grinding plate perfectly matching the model and specifications of this thick grinding wheel blade is selected, ensuring that the diameter of the diamonds in the grinding plate matches the diameter of the diamonds in the blade, guaranteeing uniform grinding. If the diameter of the diamond in the grinding wheel is too small, the particles on the blade surface will not be fully exposed; if it is too large, the particles will be unevenly exposed, both causing roughness fluctuations during the initial cut. During grinding, the grinding speed, depth of cut, grinding speed, and number of passes must be set appropriately. The program should be started to precisely grind the thick grinding wheel until the diamond particles on the blade surface are uniform and fully exposed, stopping once the preset standard is met. Finally, a second side cut is performed. The equipment is started to control the Z1 and Z2 axes to drive the ground thick grinding wheel, precisely aligning it with the side of the glass particle to be cut after flipping it over. A reasonable cutting speed and depth of cut are set, driving the blade deep into the glass material for cutting. Through this process, the surface roughness of the glass lens is precisely improved, ensuring it meets the preset requirements and remains stable. The boundaries of the cut glass under a microscope will not be completely identical. Figure 6 Images (a), (b), (c), and (d) are schematic diagrams of the boundaries of multiple cut glass pieces under a microscope, as shown below. Figure 6 As shown in (a), (b), (c), and (d), the particle fragmentation after cutting meets the requirement of being less than or equal to 20 μm. The roughness of the glass after cutting cannot be completely uniform. Figure 7 Figures (a), (b), and (c) show the surface roughness curves of multiple glass surfaces after cutting, as shown below. Figure 7 As shown in (a), (b), and (c), the horizontal axis of the curve represents the distance of the glass along the X-axis, and the vertical axis represents the surface roughness of the glass. Figure 7 It can be seen that the surface roughness of the glass after cutting meets the requirement of 0.4μm-0.7μm.

[0086] Specifically, such as Figure 8 As shown, the glass cutting process is as follows:

[0087] S801: Glass cleaning, applying UV film to the cleaned glass;

[0088] S803: Install the first cutting tool and sharpen the first cutting tool;

[0089] S805: Controls the first cutter to cut the glass into glass particles;

[0090] S807: Flip the glass particles, replace the second tool, and sharpen the second tool;

[0091] S809: Control the second tool to polish the two sides of the glass particles;

[0092] S811: The cut glass particles are observed under a microscope, and the side roughness, front and back chipping, and particle size are measured.

[0093] For glass lens materials, the specifications are 70mm×12.798mm and the thickness is 3mm. The specifications of the product particles are 12.798mm×8.17mm.

[0094] Cutting requirements: Side surface roughness Ra must be 0.4μm-0.7μm, front and back chipping must be less than or equal to 20μm, and particle size tolerance must be ±30μm. Specific implementation details are as follows:

[0095] 1. Grinding wheel dicing machine: Model DS9260 (this model is not the only option).

[0096] 2. Grinding wheel: SD600 diamond grinding wheel (diamond diameter approximately 20μm), initial cut thickness 0.15mm, secondary cuts use 1mm thick metal bond grinding wheel (this brand and model is not the only option).

[0097] 3. Substrate film: PET UV film.

[0098] 4. Film Application: A specialized film application machine automatically applies film to the surface of the glass lens raw material. Before application, the front and back surfaces of the glass should be clean and dust-free, and the area of ​​air bubbles on the glass surface after film application should not exceed 20% of the contact area between the particles and the film. After film application, the glass is placed stably on the dicing machine processing table. No additional baking is required; it is directly clamped and fixed by the worktable fixing mechanism.

[0099] 5. Sharpening: The sharpening process is divided into two stages. First sharpening (for particle cutting): Use an SD600 sharpening plate (diamond diameter approximately 20μm), cut to a depth of 0.3mm, spin speed 25000rpm, feed rate 5mm / s, and make 3 cuts to ensure the blade is sharp and flawless. Second sharpening (for improving side roughness): Still use an SD600 sharpening plate, cut to a depth of 0.3mm, spin speed 25000rpm, feed rate 5mm / s, and make 5 cuts until the diamond particles on the blade surface are evenly and fully exposed.

[0100] 6. Process and Parameters: The feed speed direction of the grinding wheel is set to a single preset cutting path. Adjust the rotation angle of the working disc to make the cutting path coincide with the horizontal baseline of the machine (error not exceeding 1μm). There is no need to adjust the cutting path in the other vertical direction. After setting the cutting path in this single direction, particle cutting is performed only along this single direction. After particle cutting is completed, the particles are rotated 90° and then a second side cutting (i.e., grinding) is performed.

[0101] 7. Cutting: First, particle cutting is performed using SD600 grinding wheels with a thickness of 0.15mm. These wheels are installed on the Z1 and Z2 axes respectively. The spindle speed is 25000rpm, and the dicing speed is 0.5mm / s. The dicing height of the grinding wheel is adapted to the glass thickness. The cooling water flow rate is kept stable. Glass cutting fluid can be added. The particles are cut into 12.798mm × 8.17mm particles according to the preset trajectory, and the dimensional tolerance is strictly controlled to ±30μm. After the particles are cut, they are carefully removed with special tweezers and rotated 90° and fixed in place using a special tooling. Then, the SD600 grinding wheel with a thickness of 1mm metal bond is replaced. The spindle speed is maintained at 25000rpm, and the dicing speed is 3mm / s. The grinding wheel cuts into the glass particles to a depth of about 20μm. A second side cut (i.e., grinding) is performed along the preset trajectory to complete the surface roughness improvement operation.

[0102] 8. Inspection: The cut glass particles are observed under a microscope. The side roughness, front and back chipping, and particle size are measured. If the side roughness Ra meets the requirements of 0.4μm-0.7μm, front and back chipping less than or equal to 20μm, and particle size tolerance is ±30μm, it is considered a qualified product.

[0103] Furthermore, the use of terms such as "first," "second," etc., in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0104] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0105] Furthermore, the embodiments of this application can be combined with each other, but only if they are based on what those skilled in the art can do. If the combination of embodiments is contradictory or cannot be implemented, it should be considered that such combination of embodiments does not exist and is not within the scope of protection claimed by this application.

[0106] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for cutting glass, characterized in that, A cutting device is used, comprising a main body, a platform, a cutting shaft, a cutting tool, and a rotating fixing component. The platform is mounted on the main body, and the cutting shaft is also mounted on the main body for driving the cutting tool to perform cutting. The cutting tool is mounted on the cutting shaft and includes a first cutting tool and a second cutting tool. The rotating fixing component is movably mounted on the platform for fixing the cut glass. The glass cutting method includes: The glass is fixed on the platform; The cutting axis, on which the first tool is mounted, is controlled to cut the glass to cut side surfaces on at least two sides of the glass. Rotate the glass and fix it to the rotating fixing member to turn one side of the glass cut out away from the platform; The cutting axis, on which the second tool is mounted, is controlled to grind one side of the glass. Rotate the glass again and fix it to the rotating fixture to turn the other side of the glass cut out away from the platform. The cutting axis, equipped with the second tool, is controlled to polish the other side of the glass.

2. The glass cutting method according to claim 1, characterized in that, The cutting axis includes a first cutting axis and a second cutting axis. After the step of fixing the glass on the platform, the glass cutting method further includes: The first tool is mounted on the first cutting shaft, and the second tool is mounted on the second cutting shaft.

3. The glass cutting method according to claim 1, characterized in that, The cutting axis includes a first cutting axis and a second cutting axis. After the step of fixing the glass on the platform, the glass cutting method further includes: The first cutting tool is mounted on the first cutting shaft, and the first cutting tool is mounted on the second cutting shaft.

4. The glass cutting method according to claim 3, characterized in that, The cutting start point of the first cutting axis is located in the first region, and the cutting start point of the second cutting axis is located in the second region.

5. The glass cutting method according to claim 3, characterized in that, Before the step of controlling the cutting axis equipped with the second tool to grind one side of the glass, the glass cutting method further includes: Remove the first tool from the first and second cutting shafts, and install the second tool on the first and second cutting shafts.

6. The glass cutting method according to claim 5, characterized in that, After the step of mounting the second tool on the first cutting shaft and the second cutting shaft, the glass cutting method further includes: The second tool on the first cutting axis and the second tool on the second cutting axis are ground.

7. The glass cutting method according to any one of claims 1 to 6, characterized in that, The circumference of the second tool is used to polish the side surface of the glass.

8. The glass cutting method according to any one of claims 1 to 6, characterized in that, The first cutting tool and the second cutting tool are different models, and the mesh count of the second cutting tool is less than that of the first cutting tool.

9. A method for cutting glass according to any one of claims 1 to 6, characterized in that, Before the step of controlling the cutting axis equipped with the first tool to cut the glass, the glass cutting method further includes grinding the first tool.

10. A cutting device, characterized in that, include: The device comprises a main body, a platform, a cutting shaft, a cutting tool, and a rotating fixing member. The platform is disposed on the main body, and the cutting shaft is disposed on the main body for driving the cutting tool to perform cutting. The cutting tool is mounted on the cutting shaft and includes a first cutting tool and a second cutting tool. The rotating fixing member is movably disposed on the platform for fixing the cut glass. The cutting device is used to implement the glass cutting method as described in any one of claims 1 to 9.

11. The cutting device according to claim 10, characterized in that, The cutting shaft includes a first cutting shaft and a second cutting shaft.

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