Sapphire plane window forming auxiliary device and method

Abstract

The invention discloses a sapphire plane window forming auxiliary device. The sapphire plane window forming auxiliary device comprises a substrate, a supporting layer, a clamping position, a glass bottom plate and a sapphire plane window. The base plate is installed on a workbench of machining equipment. The supporting layer is arranged on the substrate; the glass bottom plate is placed on the upper surface of the supporting layer; and the sapphire window is arranged on the glass bottom plate. The invention further discloses a sapphire plane window forming method. The sapphire window has the beneficial effects that the glass bottom plate is installed on the supporting layer, the size of the supporting layer and the size of the glass bottom plate can be designed according to actual needs, the machining requirement of the sapphire window can be met, and the problem that in the prior art, the sapphire window is inconvenient to machine and the problem of special-shaped part positioning are solved.

Description

Technical Field

[0001] The invention relates to optical material plane window molding technology, and in particular to a sapphire plane window molding auxiliary device and method. Background Art

[0002] As a commonly used optical material, sapphire has excellent optical properties and wide-band light transmittance, especially in the infrared band. In addition, sapphire also has excellent mechanical properties, high hardness, good thermal conductivity, high tensile strength, and can withstand extremely harsh environments. Therefore, optical components made of sapphire have great advantages in the application of military optoelectronic sensor system windows.

[0003] However, due to the high hardness of sapphire, second only to diamond, its processing difficulty is also very high. In addition, in order to ensure the field of view of the observation window, the size of the sapphire window needs to be as large as possible, which increases the processing difficulty to a certain extent; at the same time, in order to achieve a 360-degree omnidirectional field of view, multiple sapphire windows of different sizes need to be spliced ​​together. In order to ensure the splicing accuracy, more stringent requirements are also put forward for the processing accuracy of the splicing surface.

[0004] At present, the shape of sapphire flat windows is mainly formed by milling and grinding technology, and its core technical solution is: use electroplated diamond grinding head or bronze sintered grinding wheel to mill sapphire blanks, and realize the geometric shape of the window by controlling the feeding path of the grinding tool. However, this traditional milling and grinding technology has significant technical defects: the working table of the processing equipment is small and the processing capacity is limited. It can only process smaller components, and there is no fixed space for components with sizes close to or larger than the working table; the processing accuracy depends on the surface leveling process. The processing accuracy of the sapphire window is limited by the leveling accuracy of the working table and the glass bottom plate. In the existing technology, the glass bottom plate is directly leveled by the copper sheet at the four corners of the bottom. The leveling space is small and the accuracy is poor. In addition, the glass bottom plate is easily damaged during the processing, and the utilization rate is low. Summary of the invention

[0005] The purpose of the present invention is to provide a sapphire flat window forming auxiliary device and method in view of the deficiencies in the prior art, aiming to solve the problem that sapphire windows are difficult to process in the prior art.

[0006] The technical solution adopted by the present invention is: a sapphire plane window forming auxiliary device, including a substrate, a support layer, a clamping position, a glass bottom plate and a sapphire window; The substrate is installed on a workbench of a processing device; The support layer is arranged on the substrate; The glass bottom plate is placed on the upper surface of the supporting layer; The sapphire window is arranged on the glass bottom plate.

[0007] According to the above solution, the support layer includes multiple layers of stacked and pasted float glass plates, and the bottom layer of the float glass plate is connected to the base plate by quick-drying glue to form an integrated structure.

[0008] According to the above solution, the glass bottom plate is connected to the top float glass plate of the support layer through quick-drying glue.

[0009] According to the above scheme, the substrate is square, and the copper sheet is used as a leveling structure to pad the four corners of the bottom of the substrate and is located between the substrate and the workbench; the four corners of the top of the substrate are clamping positions, and clamping blocks are installed at the clamping positions to fix the substrate.

[0010] According to the above solution, the substrate is made of hard aluminum material.

[0011] According to the above scheme, the size of the glass base plate is larger than 3 / 4 of the size of the sapphire window to be processed.

[0012] The present invention also adopts a sapphire plane window forming method, comprising the following steps: Providing the sapphire window auxiliary molding device as described above; Cleaning the workbench of the three-axis precision engraving equipment, and installing the sapphire plane window forming auxiliary device on the workbench; The sapphire plane window forming auxiliary device is divided to determine the milling area and depth of the glass bottom plate; The glass bottom plate is milled and processed to make the flatness less than 0.01mm; After preheating, the sapphire window is installed on the sapphire flat window forming auxiliary device; The sapphire plane window forming auxiliary device is fixed on a workbench; the height difference of the sapphire window in all directions outside the light aperture is measured, and the height difference is adjusted to be less than 0.01 mm; Obtain the shape and related dimensions of the sapphire window; The sapphire window is processed in the three-axis precision engraving equipment to obtain the finished sapphire window.

[0013] According to the above scheme, the specific method for centering the sapphire plane window forming auxiliary device is: use the probe of the three-axis precision engraving equipment to determine the X and Y coordinate values ​​of the center point of the glass base plate, and measure the Z-direction height difference between the upper and lower surfaces of the glass base plate; use the probe to obtain the coordinate origin of the glass base plate to complete the centering of the sapphire plane window forming auxiliary device.

[0014] According to the above scheme, the method for leveling so that the height difference is less than 0.01mm is as follows: take measurement points outside the light-clearing aperture of the sapphire window, and take several measurement points on each of the four edges; use a probe to measure the Z-axis coordinate value of each point, determine the height difference in each direction through the Z-axis coordinate value of each point, and use the leveling structure at the four corners of the substrate to level the height difference of the sapphire window surface to less than 0.01mm.

[0015] According to the above scheme, the method for obtaining the shape and size of the sapphire window is: use a probe to evenly mark points along the four sides of the sapphire window, keep the measurement height consistent, record the coordinates of each point, and connect the points to obtain the shape and size of the sapphire window.

[0016] The beneficial effects of the present invention are: 1. In the present invention, the substrate is connected to the workbench through a leveling structure, the supporting layer is located on the upper layer of the substrate and plays a supporting role, and the glass bottom plate is located on the upper layer of the supporting layer and is used to bond and fix the sapphire window; the design of the substrate and the supporting layer is equivalent to raising the worktable of the processing equipment and increasing the operating space; the glass bottom plate is installed on the supporting layer, and the sizes of the supporting layer and the glass bottom plate can be designed according to actual needs, which can meet the processing requirements of the sapphire window and solve the problem of inconvenient processing of the sapphire window in the prior art.

[0017] 2. In the present invention, the glass bottom plate is placed on the support layer, has a large contact area with the support layer, is not easily damaged during processing, and improves the utilization rate of the glass bottom plate.

[0018] 3. In the present invention, the substrate is made of hard aluminum material with high hardness, excellent pressure resistance and good bending resistance. After the copper sheet as a leveling structure is arranged between the workbench and the four corners of the hard aluminum base plate, no breakage will occur when the hard aluminum base plate is fixed by a clamping block at the clamping position, thereby ensuring the stability of the leveling accuracy during the processing and improving the reuse rate of the forming auxiliary device.

[0019] 4. In the present invention, the support layer is a multi-layered float glass plate, which is connected to the base plate by quick-drying glue to form an integrated structure, ensuring that there is sufficient clamping height to fix the forming auxiliary device, and the specific height can be changed according to actual needs; at the same time, the use of quick-drying glue to achieve the connection between the glass base plate and the float glass sheet can not only greatly reduce the bonding time, but also the quick-drying glue can withstand a certain high temperature, ensuring that the forming auxiliary device will not be offset during the subsequent heating and bonding process.

[0020] 5. In the present invention, the glass bottom plate is located on the upper layer of the support layer and is connected to the support layer by quick-drying glue. The size of the glass bottom plate is larger than 3 / 4 of the size of the sapphire window to be processed, so that the adhesive has sufficient bonding force to ensure the bonding firmness of the sapphire window and ensure that it will not be displaced during the processing; the glass material also determines that it can be processed repeatedly, effectively avoiding the unevenness of the upper surface of the glass bottom plate caused by factors such as environmental changes and slight tilt of the work surface; 6. The present invention adopts a method of evenly marking points around the sapphire window to be processed by the probe, which can accurately determine the coordinate origin of any special-shaped part, ensure that the size to be formed is within the size range of the blank, and achieve precise offset within the range to avoid unqualified areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view structural schematic diagram of the first embodiment of the present invention.

[0022] Figure 2 It is a top view schematic diagram of the first embodiment.

[0023] Figure 3 A top view of the support layer and the compact.

[0024] Figure numerals: 1. substrate, 2. support layer, 3. pressing block, 4. glass bottom plate, 5. adhesive, 6. sapphire window. DETAILED DESCRIPTION

[0025] The specific embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. It should be understood that these descriptions are only exemplary and do not limit the scope of the present invention.

[0026] See also Figures 1-3 , a sapphire plane window forming auxiliary device, specifically a large-size sapphire plane window forming auxiliary device, comprising a substrate 1, a support layer 2, a glass bottom plate 4 and a sapphire window 6; The substrate 1 is installed on the workbench of the processing equipment through the leveling structures at the four corners; The support layer 2 is disposed on the substrate 1; The glass bottom plate 4 is placed on the upper surface of the supporting layer 2; The sapphire window 6 is disposed on the glass bottom plate 4 .

[0027] In the present invention, the processing equipment can be an existing three-axis precision engraving equipment.

[0028] In the present invention, the sapphire window 6 can be a large-sized sapphire window (diagonal size greater than 500 mm). The substrate 1 is square, and the copper sheet is used as a leveling structure to pad the bottom four corners of the substrate 1 (located between the substrate 1 and the workbench). The top four corners of the substrate are clamping positions, and the clamping block 3 is clamped at the clamping position to fix the substrate 1. The entire device will not break during the processing, ensuring the stability of the leveling accuracy during the processing, and improving the reuse rate of the sapphire plane window forming auxiliary device.

[0029] In the present invention, the substrate 1 is made of standard hard aluminum material (such as 2A11 aluminum alloy), which has high hardness, excellent pressure resistance and good bending resistance.

[0030] Preferably, the support layer 2 comprises multiple layers of laminated and pasted float glass plates, and the bottom layer of the float glass plate is connected to the substrate 1 by quick-drying adhesive to form an integrated structure.

[0031] In the present invention, the support layer 2 is formed by laminating and pasting three 10 mm thick float glass plates, and the two adjacent float glass plates are pasted and fixed with quick-drying glue; the thickness of the support layer 2 is greater than the height of the clamping block 3.

[0032] In the present invention, three layers of float glass are used to ensure that there is a sufficient clamping height to fix the sapphire flat window forming auxiliary device, and the specific height can be adjusted according to actual needs; the glass bottom plate 4 and the float glass plate of the support layer 2 are connected using quick-drying glue, which can not only greatly reduce the bonding time, but also the quick-drying glue can withstand a certain high temperature, ensuring that the forming auxiliary device will not be offset during the subsequent heating and bonding process.

[0033] In the present invention, the glass bottom plate 4 is located on the upper surface of the support layer 2, and is connected to the top float glass plate of the support layer 2 through quick-drying glue. The glass bottom plate 4 is connected to the sapphire window 6 to be processed through the adhesive 5; the size of the glass bottom plate 4 needs to be larger than 3 / 4 of the size of the sapphire window 6 to be processed, so that the adhesive 5 can have sufficient bonding force to ensure the bonding firmness of the sapphire window 6 and ensure that it will not be displaced during the processing.

[0034] A sapphire plane window forming method, specifically a large-size sapphire plane window forming method, the method comprising the following steps: 1) Provide the sapphire flat window forming auxiliary device as described above.

[0035] 2) Clean the workbench of the three-axis precision engraving equipment and install the sapphire plane window forming auxiliary device on the workbench.

[0036] In the present invention, the work surface of the three-axis precision engraving equipment is cleaned to ensure that there are no large particles such as glass powder and iron filings attached to the work surface, so as to avoid the situation where the surface of the forming auxiliary device is raised by large particles on the work surface, thereby reducing the difficulty of leveling. Then, the contact surface between the substrate 1 of the sapphire plane window forming auxiliary device and the work table is cleaned, placed on the work table, and the sapphire plane window forming auxiliary device is fixed with a pressing block 3.

[0037] 3) The sapphire plane window forming auxiliary device is divided and the milling area and depth of the glass bottom plate 4 are determined. The specific method is: Use the probe of the three-axis precision engraving equipment to determine the X and Y coordinate values ​​of the center point of the glass bottom plate 4, and measure the Z-direction height difference of the upper surface of the glass bottom plate 4; use the probe to obtain the coordinate origin of the glass bottom plate 4, complete the centering of the sapphire plane window molding auxiliary device, and then determine the milling area and depth of the glass bottom plate 4 according to production requirements.

[0038] 4) Set the processing program of the glass bottom plate 4 and output it.

[0039] In the present invention, according to production requirements, programming software is used to compile a milling program for the entire surface of the glass bottom plate 4, and relevant processing parameters such as the grinding head diameter, feed rate, path spacing, processing depth, and the milling amount path of each layer are input. After the path compilation is completed, the path is output; in the present invention, the relevant processing parameters are set according to actual production needs.

[0040] 5) Import the processing program into the three-axis precision engraving equipment, and mill the glass bottom plate 4 to make the flatness of the glass bottom plate less than 0.01mm. The specific method is: The processing program is imported into the three-axis precision engraving equipment for operation, the upper surface of the glass bottom plate 4 is milled and ground, and then the flatness of the glass bottom plate 4 is measured using a probe. The flatness is required to be less than 0.01 mm to meet the leveling requirements of the sapphire window 6. In the present invention, the milling and grinding processing of the glass bottom plate 4 is the prior art.

[0041] 6) After preheating, install the sapphire window 6 on the sapphire flat window forming auxiliary device. The specific method is: The sapphire flat window forming auxiliary device and a sapphire window 6 are placed on a constant temperature electric heating plate to be preheated to a set temperature (to melt the adhesive 5), the adhesive 5 is evenly applied on the preheated glass bottom plate 4, the sapphire window 6 is placed on the glass bottom plate 4, and allowed to stand to room temperature.

[0042] 7) Clean the lower surface of the substrate 1 and fix the sapphire plane window forming auxiliary device on the workbench of the processing equipment; measure the height difference of the sapphire window 6 in all directions outside the light aperture around it, and use the leveling structure to level it so that the height difference is less than 0.01mm.

[0043] In the present invention, the lower surface of the substrate 1 of the sapphire plane window forming auxiliary device is cleaned, and the surface is free of impurities and large particles, and the sapphire plane window forming auxiliary device is fixed on the workbench at the clamping position by using a pressing block 3; a measuring point is taken outside the light aperture of the sapphire window 6, and a number of measuring points are taken on each edge around it (three measuring points can be taken, a total of 12 measuring points); the Z-axis coordinate value of each point is measured by using a probe, and the height difference in each direction is determined by the Z-axis coordinate value of each point, and the leveling structure (i.e., copper sheet) at the four corners of the substrate 1 is used to level the surface height difference of the sapphire window 6 to less than 0.01 mm, ensuring that the verticality and the shape and position tolerance of the bevel angle of the sapphire window 6 meet the requirements.

[0044] 8) Obtain the shape and size of the sapphire window 6. The specific method is: use the probe to evenly mark points along the four sides of the sapphire window 6, the measuring height must be consistent, record the coordinates of each point, and enter them in the programming software, and connect the points to accurately obtain the shape and size of the sapphire plane window.

[0045] 8) Design the processing procedure of sapphire window 6.

[0046] In the present invention, programming software is used to compile a forming program for the sapphire window 6, and the grinding head diameter, feeding mode, feeding rate, path spacing, and processing depth path parameters are input, and the path is output after the path compilation is completed.

[0047] 10) Import and run the processing program in the three-axis precision engraving equipment to process the sapphire window 6; after the processing is completed, use the probe to measure the size allowance of the sapphire window 6, and remove the pressure block at the clamping position after confirming that it meets the shape and position tolerances.

[0048] 11) Obtain the finished sapphire window 6. Specifically, place the sapphire flat window forming auxiliary device and the sapphire window 6 on a constant temperature electric heating plate for heating, remove the sapphire window 6 after the adhesive 5 is melted, and let it stand to room temperature.

[0049] In the present invention, the three-axis precision engraving equipment is an existing mature equipment; the present invention can be used for the flat window molding of optical materials such as sapphire, quartz, K9, silicon, etc., and the size of the glass bottom plate 4 can be adaptively adjusted according to the parts to be processed.

[0050] Embodiment 1 Figure 1, Figure 2 and Figure 3A sapphire plane window forming auxiliary device is shown, comprising a substrate 1, a support layer 2, a clamping position, a glass bottom plate 4 and a sapphire window 6; the substrate 1 is square, with clamping positions set at the four corners, and is fixed on the workbench of a three-axis precision engraving device; the support layer 2 comprises three layers of 10 mm thick float glass plates, and the bottom float glass plate is connected to the hard aluminum bottom plate through quick-drying glue to form an integrated structure; the glass bottom plate 4 is located on the upper layer of the support layer 2 and is connected to the support layer 2 through quick-drying glue; the size of the glass bottom plate 4 is larger than the size of the sapphire window 6 to be processed, and is connected to the sapphire window 6 through adhesive 5. The forming auxiliary device in the present invention is suitable for the case where the worktable area of ​​the three-axis precision engraving machine is smaller than the size of the sapphire window 6 to be processed.

[0051] Embodiment 2 The sapphire flat window forming auxiliary device described in Example 1 is used to form a sapphire window 6, which is a sapphire window with a length of 525 mm, a width of 405 mm, and a thickness of 8 mm. The specific method is as follows: Clean the workbench of the three-axis precision engraving equipment and the contact surface between the substrate 1 of the sapphire plane window forming auxiliary device and the workbench, and fix the sapphire plane window forming auxiliary device on the workbench; Use the ruby ​​and sapphire probes of the three-axis precision engraving equipment to determine the X and Y coordinate values ​​of the center point of the glass bottom plate 4, and measure the Z-direction height difference of the upper surface of the glass bottom plate 4 to be 0.655mm. Use the probe to obtain the G54 coordinate origin of the glass bottom plate 4 (X: 293.209, Y: 271.761, Z: -163.461), complete the centering of the molding auxiliary device, determine the milling area of ​​the glass bottom plate 4 (the milling area is the upper surface of the glass bottom plate 4, 530mm long and 450mm wide), and the depth (depth is -1mm); set the processing program and output: use the programming software to compile the milling processing program for the entire surface of the glass bottom plate 4, input the grinding head diameter of 15mm, the feed rate of 1000m m / min, path spacing 10mm, processing depth 1mm, milling amount per layer 0.12mm and other related processing parameters, output the path after completing the path compilation; import the processing path into the three-axis precision engraving equipment for operation, and use the probe to measure the flatness of the glass bottom plate 4 after the processing is completed. At this time, the flatness is 0.005mm, which meets the leveling requirements of the sapphire window 6; preheat the sapphire plane window forming auxiliary device and the sapphire window 6 to the set temperature, evenly apply the adhesive 5 on the glass bottom plate 4, and then place the sapphire window 6 on the glass bottom plate 4 and paste it, and let it stand to room temperature; clean and fix the lower surface of the substrate 1 of the sapphire plane window forming auxiliary device, and use the probe to measure the sapphire window 6 The Z-direction height difference of each measuring point on the edge (outside the aperture) around the sapphire window 6 is measured. Three measuring points are measured in each direction, and a total of 12 points are measured, as shown in Table 1; the Z-direction coordinate values ​​of the 12 measuring points determine that the height difference in each direction is 0.012mm, and the leveling structure (i.e., copper sheet) at the four corners of the substrate 1 is used to fine-tune the surface height difference of the sapphire window 6 to less than 0.01mm. After fine-tuning, the surface height difference is 0.008mm; Use the probe to evenly mark points along the four sides of the sapphire window 6, and the measuring height must be kept consistent. Record the coordinates of each point, as shown in Table 2; and enter them in the programming software. Connect the points to accurately obtain the shape and size of the large-size sapphire plane window. At this time, the G54 origin coordinates (X, Y, Z) is (553.751, 487.471, -156.305); use programming software to compile a sapphire window 6 molding program, input path parameters such as grinding head diameter 15.15mm, feeding mode lateral, feed rate 500mm / min, path spacing 0.03mm, and processing depth -9, and output the path after completing the path compilation; import and run the processing program, and after the processing is completed, use the probe to measure the sapphire window 6 margin of +0.013mm, and after confirming that it meets the external dimension tolerance, remove the pressure block 3 at the clamping position; place the molding auxiliary device and the sapphire window 6 on a constant temperature electric heating plate for heating, remove the sapphire window 6 after the adhesive 5 is melted, and let it stand to room temperature.

[0052] Table 1 Z-axis coordinate values ​​of each measuring point in the sapphire window before fine-tuning in Example 2

[0053] Table 2 shows the coordinate values ​​of the points on the four sides of the sapphire window 6 in Example 2

[0054] Comparative Example Due to the limitation of the workbench size of the processing equipment, if this forming auxiliary device is not used, it is impossible to process sapphire windows with a width greater than 300mm for comparison. Therefore, this comparative example uses a sapphire window with a length of 425mm, a width of 225mm, and a thickness of 7mm as a comparison example. The specific process is as follows: place the protective glass base plate and the sapphire window on the constant temperature electric heating plate to preheat to the set temperature, evenly apply the adhesive on the surface of the protective glass base plate, and then place the sapphire window on the upper surface of the protective glass base plate and let it stand to room temperature; clean the workbench of the three-axis precision engraving equipment to ensure that there are no large particles such as glass powder and iron filings attached to the surface of the workbench; clean and fix the lower surface of the protective glass base plate, and use the probe to measure the Z-direction height difference of each point on the edge of the sapphire window (outside the light aperture), measure 2 points in each direction, and measure a total of 8 measurement points, as shown in Table 3. The Z-direction coordinate values ​​of the 8 measurement points determine that the height difference in each direction is 0.206mm, and use the copper pads at the four corners of the protective glass base plate to measure the height difference of each point. Method: adjust the height difference of the sapphire window surface to 0.025mm (the copper foil needs to be adjusted several times); use the probe to evenly mark points along the four sides of the sapphire window, the measuring height must be consistent, record the coordinates of each point, and enter them in the programming software. Connect the points to accurately obtain the shape and size of the sapphire plane window. At this time, the coordinates of the G54 origin are X:58.866, Y389.035, and Z-206.461; use the programming software to compile the sapphire window forming program, enter the path parameters such as the grinding head diameter of 15.15mm, the feeding mode is lateral, the feed rate is 500mm / min, the path spacing is 0.03mm, and the processing depth is -8mm. After the path is compiled, output the path; import and run the processing program. After the processing is completed, use the probe to measure the sapphire window margin as +0.022mm. After confirming that it meets the external dimension tolerance, remove the pressing block; place the protective glass bottom plate and the sapphire window on a constant temperature electric heating plate for heating, remove the sapphire window after the adhesive melts, and let it stand to room temperature.

[0055] Table 3 Z-axis coordinate values ​​of each measuring point before proportional leveling

[0056] Table 4 shows the coordinate values ​​of the points on the four sides of the sapphire window in the comparative example

[0057] By comparing the results of Example 2 with the comparative example, it can be found that the present invention expands the size range of machinable parts, solving the problem that parts with a width greater than 300 mm cannot be machined; in the comparative example, repeated leveling is required to reduce the height difference of the sapphire window surface from nearly 0.2 mm to about 0.02 mm, and the larger the size of the part, the larger the height difference when it is not initially leveled, and the greater the difficulty of leveling. If the leveling effect of 0.02 mm is to be achieved, some positions of the protective glass bottom plate need to be padded higher, which will undoubtedly increase the gap between the protective glass bottom plate and the workbench, and greatly increase the risk of the protective glass bottom plate breaking when the pressing block 3 is fixed, and Example 2 solves the above problems; in the comparative example, the height difference of the sapphire window surface after leveling is 0.025 mm, and further reducing the height difference will not only greatly increase the difficulty, but also increase the risk of the protective glass bottom plate breaking, and after the molding auxiliary device is used in Example 2, the height difference is 0.012 mm when it is not initially leveled, and the height difference control is better than the comparative example without using the molding auxiliary device. After fine-tuning, the leveling accuracy is doubled.

[0058] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0059] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein with equivalents. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sapphire flat window forming auxiliary device, characterized in that: It includes a substrate, a support layer, a clamping position, a glass bottom plate and a sapphire window; The substrate is installed on a workbench of a processing device; The support layer is arranged on the substrate; The glass bottom plate is placed on the upper surface of the supporting layer; The sapphire window is arranged on the glass bottom plate.

2. The sapphire flat window forming auxiliary device according to claim 1, characterized in that: The support layer comprises multiple layers of stacked and pasted float glass plates, and the bottom float glass plate is connected to the base plate through quick-drying glue to form an integrated structure.

3. The sapphire flat window forming auxiliary device according to claim 2, characterized in that: The glass bottom plate is connected to the top float glass plate of the support layer through quick-drying glue.

4. The sapphire flat window forming auxiliary device as claimed in claim 3, characterized in that: The base plate is square, and the copper sheet is used as a leveling structure to pad the four corners of the bottom of the base plate and is located between the base plate and the workbench; the four corners of the top of the base plate are clamping positions, and clamping blocks are installed at the clamping positions to fix the base plate.

5. The sapphire flat window forming auxiliary device according to claim 1, characterized in that: The base plate is made of hard aluminum material.

6. The sapphire flat window forming auxiliary device according to claim 1, characterized in that: The size of the glass base plate is larger than 3 / 4 of the size of the sapphire window to be processed.

7. A sapphire plane window forming method, characterized in that: The following steps are involved: Providing a sapphire window auxiliary molding device as described in any one of claims 4 to 6; Cleaning the workbench of the three-axis precision engraving equipment, and installing the sapphire plane window forming auxiliary device on the workbench; The sapphire plane window forming auxiliary device is divided to determine the milling area and depth of the glass bottom plate; The glass bottom plate is milled and processed to make the flatness less than 0.01mm; After preheating, the sapphire window is installed on the sapphire flat window forming auxiliary device; The sapphire plane window forming auxiliary device is fixed on a workbench; the height difference of the sapphire window in all directions outside the light aperture is measured, and the height difference is adjusted to be less than 0.01 mm; Obtain the shape and related dimensions of the sapphire window; The sapphire window is processed in the three-axis precision engraving equipment to obtain the finished sapphire window.

8. The sapphire plane window forming method according to claim 7, characterized in that: The specific method for centering the sapphire plane window forming auxiliary device is: using the probe of the three-axis precision engraving equipment to determine the X and Y coordinate values ​​of the center point of the glass base plate, and measuring the Z-direction height difference of the upper surface of the glass base plate; using the probe to obtain the coordinate origin of the glass base plate to complete the centering of the sapphire plane window forming auxiliary device.

9. The sapphire flat window forming method according to claim 7, characterized in that: The method for leveling so that the height difference is less than 0.01mm is as follows: take measurement points outside the sapphire window aperture and take several measurement points on each edge around it; use a probe to measure the Z coordinate value of each point, determine the height difference in each direction through the Z coordinate value of each point, and use the leveling structure at the four corners of the substrate to level the height difference of the sapphire window surface to less than 0.01mm.

10. The sapphire flat window forming method according to claim 7, characterized in that: The method for obtaining the shape and size of the sapphire window is: use a probe to evenly mark points along the four sides of the sapphire window, keep the measuring height consistent, record the coordinates of each mark, connect the points, and obtain the shape and size of the sapphire window.

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