Vertical bonding process for a V-shaped cross-section wave-absorbing component
Through the vertical bonding process and the positioning and pressure application technology of special bonding tools, the bonding problem of V-shaped composite wave absorbing components is solved, and the close bonding of wave absorbing honeycomb and skin is achieved and the shape stability of the wave absorbing honeycomb and skin is avoided, avoiding defects in traditional horizontal processes.
Patent Information
- Application Number
- CN202211406583.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-11-10
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2042-11-10
AI Technical Summary
The horizontal bonding process of existing V-shaped composite wave absorbing components has problems with insufficient pressure on the interface between the wave absorbing honeycomb and the lower skin, slippage during the bonding and curing process, and the problem of skin corrugation is not fitted, and the problem of skin corrugation.
The vertical bonding process is adopted to position and conform the reflector plate, edge rib and wave-absorbing honeycomb blank through special bonding tools. First, bond the wave-absorbing honeycomb blank and then machine-added to ensure the accurate position; pressure is applied through the gantry when bonding and skinning to avoid relying on honeycomb pressure transfer, and use a vacuum bag to cure to prevent deformation.
Ensure the bonding strength between the wave-absorbing honeycomb and other sub-parts, avoid the debonding of the board core and the corrugation of the skin, ensure the bonding of the glue and improve the processing accuracy and quality.
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Figure CN115871236B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of manufacturing microwave absorbing components, and particularly relates to a vertical bonding process for V-shaped cross-section microwave absorbing components. Background Art
[0002] V-shaped composite microwave absorbing components generally consist of four sub-components: a reflector, edge ribs, an absorbing honeycomb, and a transmitting skin. Among them, the cross-section of the absorbing honeycomb is V-shaped, the reflector is located at the bottom of the absorbing honeycomb, the edge ribs are located at both ends of the absorbing honeycomb, and the transmitting skin covers the remaining surfaces of the absorbing honeycomb. During processing, the reflector, edge ribs, absorbing honeycomb, and transmitting skin are first separately cured and formed, and then the reflector, edge ribs, and transmitting skin are bonded to the absorbing honeycomb using an adhesive film.
[0003] The traditional bonding process for V-shaped composite microwave absorbing components is horizontal bonding, and the existing problems are as follows: ① When the absorbing honeycomb is relatively thick, due to poor honeycomb pressure transmission, it is inevitable that the bonding interface pressure between the absorbing honeycomb and the lower skin is insufficient, resulting in core debonding; ② The absorbing honeycomb can only be bonded using net dimensions, and during the bonding and curing process, slippage is likely to occur, resulting in non-conforming bonding surfaces with sub-components such as the skin and reflector; ③ During the curing process, the absorbing honeycomb will shrink, resulting in corrugation of the skin. To solve the above problems caused by the traditional horizontal bonding process for V-shaped composite microwave absorbing components, a new bonding process is required. Summary of the Invention
[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a vertical bonding process for V-shaped cross-section microwave absorbing components, which can ensure more accurate shape and position of the absorbing honeycomb, ensure the bonding strength between the absorbing honeycomb and other sub-components, and avoid core debonding and prevent corrugation of the transmitting skin.
[0005] The purpose of the present invention is achieved through the following technical solutions:
[0006] A vertical bonding process for V-shaped cross-section microwave absorbing components includes the following steps:
[0007] S1. Manufacture the reflector, edge ribs, transmitting skin, and absorbing honeycomb blanks, and bond the reflector, edge ribs, and absorbing honeycomb blanks on a special bonding tooling to form a microwave absorbing component assembly;
[0008] S2. Machine-process the absorbing honeycomb blank in the microwave absorbing component assembly on a special bonding tooling;
[0009] S3. Manufacture a calibration film and calibrate the microwave absorbing component assembly on a special bonding tooling;
[0010] S4. After calibration, bond the transmitting skin on the microwave absorbing component assembly through a special bonding tooling and cure the microwave absorbing component assembly;
[0011] S5. Process the cured microwave-absorbing component assembly into a V-shaped microwave-absorbing component through demolding and trimming.
[0012] Further, in step S1, the reflector, the edge-sealing rib, and the wave-transparent skin are first separately cured and formed, and then a special bonding tooling is used to position the reflector, the edge-sealing rib, and the microwave-absorbing honeycomb blank, and the reflector and the edge-sealing rib are bonded to the microwave-absorbing honeycomb blank through a foaming adhesive film to form a microwave-absorbing component assembly.
[0013] Further, the special bonding tooling includes a frame-type tooling table, a bottom plate, a gantry, a positioning component, a conformal baffle component, and a conforming baffle component. The bottom plate is arranged on the frame-type tooling table; the positioning component includes an edge-sealing rib positioning block and a reflector positioning block. The reflector positioning block is detachably arranged on the bottom plate, and the edge-sealing rib positioning block is detachably arranged on the bottom plate at both ends of the reflector positioning block. Process positioning holes are provided on both the edge-sealing rib positioning block and the reflector positioning block; the conformal baffle component includes an upper conformal baffle, a left conformal baffle, and a right conformal baffle. The left conformal baffle and the right conformal baffle are respectively detachably arranged on the bottom plate on both sides of the reflector positioning block, and the upper conformal baffle is arranged above the reflector positioning block and is detachably connected to both the left conformal baffle and the right conformal baffle; the conforming baffle component includes a honeycomb conforming baffle and a skin conforming baffle component. The honeycomb conforming baffle is detachably arranged on the bottom plate and is located on one side of the reflector positioning block opposite to the left conformal baffle. The skin conforming baffle component includes a base, a support cross beam, and a skin conforming baffle. The base is detachably arranged on the bottom plate on both sides of the reflector positioning block, the support cross beam is detachably arranged on the base, and the skin conforming baffle is detachably arranged on the support cross beam; the gantry includes supports, a pressurizing cross beam, a pressurizing rod, and a pressurizing block. Both ends of the pressurizing block are arranged on the two edge-sealing rib positioning blocks, the supports are detachably arranged on the bottom plate at both ends of the pressurizing block, both ends of the pressurizing cross beam are movably arranged on the two supports, one end of the pressurizing rod is fixed on the pressurizing cross beam, and the other end of the pressurizing rod passes downward through the pressurizing cross beam and abuts against the pressurizing block.
[0014] Further, in step S1, when manufacturing the microwave-absorbing honeycomb blank, the bonding surfaces of the microwave-absorbing honeycomb blank with the reflector and the edge-sealing rib are of net size, and allowances are left on the remaining surfaces of the microwave-absorbing honeycomb blank.
[0015] Further, in step S1, when bonding the microwave-absorbing component assembly, place the reflector on the reflector positioning block, place the edge-sealing rib on the edge-sealing rib positioning block, and bond the reflector and the edge-sealing rib to the microwave-absorbing honeycomb blank through a foaming adhesive film, and then fix the reflector and the edge-sealing rib positioning blocks so that the edge-sealing rib is clamped between the reflector and the edge-sealing rib positioning blocks, and fix the conformal baffle component so that the left conformal baffle and the right conformal baffle are respectively attached to the left side surface and the right side surface of the microwave-absorbing honeycomb blank, and the upper conformal baffle is attached to the top surface of the microwave-absorbing honeycomb blank.
[0016] Further, in step S2, first remove the upper conformal baffle and the right conformal baffle, then fix the special adhesive tooling on the operating table of the CNC machine tool. First, keep the left conformal baffle in contact with the left side surface of the absorbing honeycomb blank and machine the right profile of the absorbing honeycomb blank through the CNC machine tool. Then, remove the left conformal baffle and fix the honeycomb conforming baffle so that the honeycomb conforming baffle is in contact with the right side surface of the absorbing honeycomb blank. Then, machine the left profile of the absorbing honeycomb blank through the CNC machine tool, and finally manufacture an absorbing honeycomb with a V-shaped cross section.
[0017] Further, in step S3, the calibration film includes a non-isolation film and an adhesive film, and the non-porous isolation film is attached to the surface of the adhesive film and can be directly peeled off from the adhesive film.
[0018] Further, in step S3, when calibrating the absorbing component assembly, first lay the calibration film on the absorbing component assembly, then lay the transmitting skin on the calibration film and position the transmitting skin through the process positioning holes. Then, seal the absorbing component assembly in a can for calibration until there is no interference and cavity between the transmitting skin and the absorbing component assembly.
[0019] Further, in step S4, when adhesively bonding the transmitting skin, first remove the calibration film and the transmitting skin in step S3, then paste a new transmitting skin on the absorbing component assembly through the adhesive film. Then, install the gantry component on the bottom plate, and press the pressure beam to make the pressure rod move downward to pressurize and limit the transmitting skin, so that the transmitting skin is closely attached to the absorbing component assembly.
[0020] Further, in step S4, when curing the absorbing component assembly, first vacuum package the absorbing component assembly through a vacuum bag, then install the skin conforming baffle component outside the vacuum bag to make the skin conforming baffle in contact with the absorbing component assembly, and finally cure the absorbing component assembly in a can.
[0021] The present invention has the following advantages:
[0022] 1. When adhesively bonding the absorbing component assembly, first adhesively bond the absorbing honeycomb blank and then machine the absorbing honeycomb blank into a net-sized absorbing honeycomb, and perform positioning and shape preservation through a special adhesive tooling during the machining process to ensure that the absorbing honeycomb blank does not slip and is accurately positioned, thereby making the adhesive surface of the absorbing honeycomb more conforming to the other sub-components and avoiding the generation of cavities on the adhesive surface.
[0023] 2. When performing skin adhesive bonding, apply pressure through a special adhesive tooling, avoiding the method of transmitting pressure through the honeycomb, so that both sides of the transmitting skin are subjected to bag pressure, ensuring the adhesive strength between the transmitting skin and the absorbing honeycomb blank and avoiding delamination of the board core.
[0024] 3. When performing skin bonding, maintain the shape of the absorbing component assembly through a special bonding tooling to prevent the absorbing component assembly from deforming during the bonding and curing process, thereby making the bonding surface between the wave-transparent skin and the absorbing honeycomb more conforming and preventing the wave-transparent skin from generating waviness due to the shrinkage of the absorbing honeycomb. Description of the Drawings
[0025] Figure 1 is a schematic structural diagram of the absorbing component assembly in the present invention;
[0026] Figure 2 is a schematic bonding process diagram of the absorbing component assembly in the present invention;
[0027] Figure 3 is a schematic machining process diagram of the absorbing honeycomb blank in the present invention;
[0028] Figure 4 is a schematic verification process diagram of the absorbing component assembly in the present invention;
[0029] Figure 5 is a schematic skin bonding process diagram of the absorbing component assembly in the present invention;
[0030] Figure 6 is a schematic structural diagram of the finished absorbing component in the present invention.
[0031] In the figure: 1. Reflector; 2. Edge-sealing rib; 3. Wave-transparent skin; 4. Absorbing honeycomb blank; 5. Frame-type tooling table; 6. Bottom plate; 7. Edge-sealing rib positioning block; 8. Reflector positioning block; 9. Process positioning hole; 10. Upper conforming baffle; 11. Left conforming baffle; 12. Right conforming baffle; 13. Honeycomb conforming baffle; 14. Base; 15. Support cross beam; 16. Skin conforming baffle; 17. Support; 18. Pressing cross beam; 19. Pressing rod; 20. Pressing block. Detailed Embodiments
[0032] The following further describes the present invention with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following.
[0033] As Figure 2-5 shown, a vertical bonding process for a V-shaped cross-section absorbing component is used to process the absorbing component assembly composed of a reflector 22, an edge-sealing rib 23, a wave-transparent skin 24, and an absorbing honeycomb blank 25 shown in Figure 1 into a V-shaped cross-section absorbing component by combining a special bonding tooling, and it includes the following steps:
[0034] S1. Manufacture the reflector 1, the edge-sealing rib 2, the wave-transparent skin 3, and the absorbing honeycomb blank 4, and bond the reflector 1, the edge-sealing rib 2, and the absorbing honeycomb blank 4 on the special bonding tooling to form an absorbing component assembly;
[0035] S2. Machine-process the absorbent honeycomb blank 4 in the absorbent component assembly on a dedicated bonding tooling;
[0036] S3. Make a calibration film and calibrate the absorbent component assembly on a dedicated bonding tooling;
[0037] S4. After calibration, bond the transparent skin 3 on the absorbent component assembly through the dedicated bonding tooling and cure the absorbent component assembly;
[0038] S5. Process the cured absorbent component assembly into a V-shaped absorbent component through demolding and trimming.
[0039] In step S1, the reflector 1, the edge-sealing rib 2, and the transparent skin 3 are first separately cured and formed. When manufacturing the absorbent honeycomb blank 4, the bonding surfaces of the absorbent honeycomb blank 4 with the reflector 1 and the edge-sealing rib 2 are of net dimensions, that is, the absorbent honeycomb blank 4 just completely fits with the reflector 1 and the edge-sealing rib 2, and the remaining surfaces of the absorbent honeycomb blank 4 leave allowances for subsequent trimming. Then, use a dedicated bonding tooling to position the reflector 1, the edge-sealing rib 2, and the absorbent honeycomb blank 4, and bond the reflector 1 and the edge-sealing rib 2 to the absorbent honeycomb blank 4 through a foaming adhesive film to form the absorbent component assembly.
[0040] As Figure 2-5As described above, the special bonding tooling includes a frame-type tooling table 5, a bottom plate 6, a gantry, a positioning assembly, a conformal baffle assembly, and a contoured baffle assembly. The bottom plate 6 is fixed on the frame-type tooling table 5. The positioning assembly includes an edge-bonding rib positioning block 7 and a reflector positioning block 8. The reflector positioning block 8 is detachably arranged on the bottom plate 6, and the edge-bonding rib positioning block 7 is detachably arranged on the bottom plate 6 at both ends of the reflector positioning block 8. Process positioning holes 9 are provided on both the edge-bonding rib positioning block 7 and the reflector positioning block 8. The conformal baffle assembly includes an upper conformal baffle 10, a left conformal baffle 11, and a right conformal baffle 12. The left conformal baffle 11 and the right conformal baffle 12 are respectively detachably arranged on the bottom plate 6 on both sides of the reflector positioning block 8. The upper conformal baffle 10 is arranged above the reflector positioning block 8 and is detachably connected to both the left conformal baffle 11 and the right conformal baffle 12. The contoured baffle assembly includes a honeycomb contoured baffle 13 and a skin contoured baffle assembly. The honeycomb contoured baffle 13 is detachably arranged on the bottom plate 6 and is located on one side of the reflector positioning block 8 opposite to the left conformal baffle 11. The skin contoured baffle assembly includes a base 14, a support crossbeam 15, and a skin contoured baffle 16. The base 14 is detachably arranged on the bottom plate 6 on both sides of the reflector positioning block 8. The support crossbeam 15 is detachably arranged on the base 14. The skin contoured baffle 16 is detachably arranged on the support crossbeam 15. The gantry includes supports 17, a pressurizing crossbeam 18, a pressurizing rod 19, and a pressurizing block 20. Both ends of the pressurizing block 20 are respectively placed on the two edge-bonding rib positioning blocks 7. The supports 17 are detachably arranged on the bottom plate 6 at both ends of the pressurizing block 20. Both ends of the pressurizing crossbeam 18 are respectively placed on the two supports 17. One end of the pressurizing rod 19 is fixed on the pressurizing crossbeam 18, and the other end of the pressurizing rod 19 passes downward through the pressurizing crossbeam 18 and abuts against the pressurizing block 20. When specifically using this special bonding tooling, the gantry, the positioning assembly, the conformal baffle assembly, and the contoured baffle assembly are selected and used according to the requirements in each bonding process step. The detachable installation of each component can be realized by bolt connection. When fixing, tighten the bolts, and when disassembling, remove the bolts.
[0041] Specifically, in step S1, when bonding the microwave absorbing component assembly, such as Figure 2As shown, place the reflector 1 on the reflector positioning block 8, place the edge-sealing rib 2 on the edge-sealing rib positioning block 7, and bond the reflector 1 and the edge-sealing rib 2 to the absorbing honeycomb blank 4 through a foaming adhesive film. The placement positions on the reflector positioning block 8 and the edge-sealing rib positioning block 7 are respectively adapted to the outer shapes of the reflector 1 and the edge-sealing rib 2. In this way, the corresponding positioning can be achieved by directly placing the reflector 1 and the edge-sealing rib 2. Then fix the reflector 1 and the edge-sealing rib positioning block 7 so that the edge-sealing rib 2 is clamped between the reflector 1 and the edge-sealing rib positioning block 7. Fix the conformal baffle assembly so that the left conformal baffle 11 and the right conformal baffle 12 are respectively in contact with the left side surface and the right side surface of the absorbing honeycomb blank 4, and the upper conformal baffle 10 is in contact with the top surface of the absorbing honeycomb blank 4. In this way, during the bonding process, the overall shape of the absorbing component assembly is maintained by the conformal baffle assembly until the reflector 1, the edge-sealing rib 2, and the absorbing honeycomb blank 4 are completely bonded together. Preferably, a 0.2 mm gap is reserved between the edge-sealing rib positioning block 7 and the reflector positioning block 8 to facilitate laying the adhesive film. In addition, if the obtained reflector 1 and edge-sealing rib 2 are closed on all sides, the inner surface of the reflector 1 and the edge-sealing rib 2 can be directly used for bonding and positioning. If the obtained reflector 1 and edge-sealing rib 2 are open, corresponding process holes need to be designed for bonding and positioning.
[0042] In step S2, as Figure 3 shown, first remove the upper conformal baffle 10 and the right conformal baffle 12, then fix the special bonding tooling on the operating table of the numerical control machine tool. First, keep the left conformal baffle 11 in contact with the left side surface of the absorbing honeycomb blank 4 and machine the right profile of the absorbing honeycomb blank 4 through the numerical control machine tool. Then remove the left conformal baffle 11 and fix the honeycomb conforming baffle 13 so that the honeycomb conforming baffle 13 is in contact with the right side surface of the absorbing honeycomb blank 4. Then machine the left profile of the absorbing honeycomb blank 4 through the numerical control machine tool. Finally, machine the absorbing honeycomb blank to have a V-shaped cross-section.
[0043] In step S1 and step S2, after the absorbing component assembly is positioned by the positioning component, first bond the transmitting honeycomb blank 4, and then machine the transmitting honeycomb blank 4 into a net-sized absorbing honeycomb. And the outer shape of the absorbing honeycomb blank 4 is maintained by the conformal baffle assembly and the honeycomb conforming baffle 13. In this way, it can be ensured that the absorbing honeycomb blank 4 does not slip and is accurately positioned, and further the bonding surface of the absorbing honeycomb and the other sub-components is more fitting, avoiding the generation of cavities on the bonding surface.
[0044] In step S3, when verifying the absorbing component assembly, as Figure 4As shown in the figure, a calibration film is made of a non-porous isolation film, a glue film and a non-porous isolation film, wherein the non-porous isolation film is attached to the surface of the glue film and can be directly peeled off from the glue film. The calibration film is laid on the absorbing component assembly, and then a transmitting skin 3 is laid on the calibration film and positioned through the process positioning holes 9. Then, the absorbing component assembly is bagged and put into the tank for calibration to ensure that there is no interference and no cavity between the transmitting skin 3 and the absorbing component assembly. Specifically, if the honeycomb holes in the bonding area on the calibration film are clearly visible after the calibration is taken out of the tank, it means there is no interference and no cavity; otherwise, there is interference and cavity. If there is interference, the absorbing component assembly needs to be polished; if there is a cavity, the cavity needs to be filled with a glue film, and then the above calibration operation is carried out again until there is no interference and no cavity between the transmitting skin 3 and the absorbing component assembly.
[0045] In step S4, when bonding the transmitting skin 3, as Figure 5 shown, first remove the calibration film and the transmitting skin 3 in step S3, then paste a new transmitting skin 3 on the absorbing component assembly through the glue film, and then install a gantry on the bottom plate 6. By pressing the pressure beam 18, the pressure rod 19 moves downward to pressurize and limit the transmitting skin 3, so as to ensure that the top area of the absorbing honeycomb is pressurized without being crushed. Finally, the transmitting skin 3 is closely attached to the absorbing component assembly. In this process, pressing through the gantry avoids relying on the honeycomb to transmit pressure, so that both sides of the transmitting skin are subjected to bag pressure to ensure the bonding strength between the transmitting skin and the absorbing honeycomb blank and avoid debonding of the panel core. When curing the absorbing component assembly, first vacuum package the absorbing component assembly through a vacuum bag, then install a skin conforming baffle assembly outside the vacuum bag to make the skin conforming baffle 16 fit with the absorbing component assembly, and finally put the absorbing component assembly into the tank for curing. The curing parameters are formulated according to the structural glue film. After curing and taking out of the tank, step S5 can be carried out to obtain a finished absorbing component as Figure 6 shown. In this process, the skin conforming baffle 16 can maintain the shape of the absorbing component assembly, prevent the absorbing component assembly from deforming during bonding and curing, and further make the bonding surface between the transmitting skin and the absorbing honeycomb more fitting, preventing the transmitting skin from generating waviness due to the shrinkage of the absorbing honeycomb.
[0046] In addition, the encapsulation and bagging operations during verification in step S3 are the same as those during curing in step S4. Specifically, the sealing tape is pasted along the edge of the bottom plate 6 for one week on the bottom plate 6. Then, a non-porous isolation film and a breathable felt are sequentially laid on the absorber component assembly. Then, the vacuum bag is covered over the entire absorber component assembly, and the four sides of the vacuum bag are pasted on the sealing tape for sealing. Finally, vacuum encapsulation is achieved by pumping out the air inside the bag. During specific verification, the encapsulated absorber component assembly together with the special bonding tooling is hoisted into the autoclave. Then, a positive pressure of 0.3 MPa ± 0.02 MPa is applied inside the autoclave, and the inside of the autoclave is evacuated to -0.030 MPa to -0.035 MPa throughout the process. Then, the temperature inside the autoclave is raised to 40°C ± 3°C at a heating rate of 1.5°C / min, and after maintaining the temperature for 30 min to 40 min, the pressure and vacuum are released. Then, the encapsulated absorber component assembly together with the special bonding tooling is hoisted out of the autoclave. During specific curing, the encapsulated absorber component assembly together with the special bonding tooling is hoisted into the autoclave. Then, a positive pressure of 0.3 MPa is applied inside the autoclave, and the inside of the autoclave is evacuated to below -0.090 MPa throughout the process. Then, the temperature inside the autoclave is raised to 180°C ± 5°C at a heating rate of 2°C / min. After maintaining the temperature for 3 h, the temperature inside the autoclave is lowered to below 60°C at a cooling rate of 1.5°C / min. Finally, after releasing the pressure and vacuum, the encapsulated absorber component assembly together with the special bonding tooling is hoisted out of the autoclave.
[0047] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A vertical bonding process for a V-shaped cross-section wave-absorbing component, characterized in that, When manufacturing the V-shaped cross-section wave-absorbing component, the following steps are included: S1. Manufacture the reflector (1), edge-sealing rib (2), wave-transparent skin (3) and wave-absorbing honeycomb blank (4), and bond the reflector (1), edge-sealing rib (2) and wave-absorbing honeycomb blank (4) on a special bonding tooling to form a wave-absorbing component assembly; S2. Machine-process the wave-absorbing honeycomb blank (4) in the wave-absorbing component assembly on the special bonding tooling; S3. Manufacture a calibration film and calibrate the wave-absorbing component assembly on the special bonding tooling; S4. After calibration, bond the wave-transparent skin (3) on the wave-absorbing component assembly through the special bonding tooling and cure the wave-absorbing component assembly; S5. Process the cured wave-absorbing component assembly into a V-shaped wave-absorbing component through demolding and trimming; The special bonding tooling includes a frame-type tooling table (5), a bottom plate (6), a gantry, a positioning component, a conformal baffle component and a conforming baffle component. The bottom plate (6) is arranged on the frame-type tooling table (5); The positioning component includes an edge-sealing rib positioning block (7) and a reflector positioning block (8). The reflector positioning block (8) is detachably arranged on the bottom plate (6), and the edge-sealing rib positioning block (7) is detachably arranged on the bottom plate (6) at both ends of the reflector positioning block (8). Process positioning holes (9) are provided on both the edge-sealing rib positioning block (7) and the reflector positioning block (8); The conformal baffle component includes an upper conformal baffle (10), a left conformal baffle (11) and a right conformal baffle (12). The left conformal baffle (11) and the right conformal baffle (12) are respectively detachably arranged on the bottom plate (6) on both sides of the reflector positioning block (8), and the upper conformal baffle (10) is arranged above the reflector positioning block (8) and is detachably connected to both the left conformal baffle (11) and the right conformal baffle (12); The conforming baffle component includes a honeycomb conforming baffle (13) and a skin conforming baffle (16) component. The honeycomb conforming baffle (13) is detachably arranged on the bottom plate (6) and is located on one side of the reflector positioning block (8) opposite to the left conformal baffle (11). The skin conforming baffle (16) component includes a base (14), a support cross beam (15) and a skin conforming baffle (16). The base (14) is detachably arranged on the bottom plate (6) on both sides of the reflector positioning block (8), the support cross beam (15) is detachably arranged on the base (14), and the skin conforming baffle (16) is detachably arranged on the support cross beam (15); The gantry includes supports (17), a pressurizing cross beam (18), a pressurizing rod (19) and a pressurizing block (20). Both ends of the pressurizing block (20) are arranged on two edge-sealing rib positioning blocks (7), the supports (17) are detachably arranged on the bottom plate (6) at both ends of the pressurizing block (20), both ends of the pressurizing cross beam (18) are arranged on two supports (17), one end of the pressurizing rod (19) is fixed on the pressurizing cross beam (18), and the other end of the pressurizing rod (19) passes downward through the pressurizing cross beam (18) and abuts against the pressurizing block (20).
2. The vertical bonding process of the V-shaped cross-section wave-absorbing component according to claim 1, characterized in that: In step S1, the reflector (1), the edge sealing rib (2), and the wave - transmitting skin (3) are first separately cured and formed. Then, a special bonding tooling is used to position the reflector (1), the edge sealing rib (2), and the absorbing honeycomb blank (4), and the reflector (1) and the edge sealing rib (2) are bonded to the absorbing honeycomb blank (4) through a foaming adhesive film to form an absorbing component assembly.
3. The vertical bonding process of the V-shaped cross-section wave-absorbing component according to claim 2, characterized in that: In step S1, when manufacturing the absorbing honeycomb blank (4), the bonding surfaces of the absorbing honeycomb blank (4) with the reflector (1) and the edge sealing rib (2) are of net size, and allowances are left on the remaining surfaces of the absorbing honeycomb blank (4).
4. The vertical bonding process of the V-shaped cross-section wave-absorbing component according to claim 2, characterized in that: In step S1, when bonding the absorbing component assembly, the reflector (1) is placed on the reflector positioning block (8), the edge sealing rib (2) is placed on the edge sealing rib positioning block (7), and the reflector (1) and the edge sealing rib (2) are bonded to the absorbing honeycomb blank (4) through a foaming adhesive film. Then, the reflector (1) and the edge sealing rib positioning block (7) are fixed so that the edge sealing rib (2) is clamped between the reflector (1) and the edge sealing rib positioning block (7), and the conformal baffle assembly is fixed so that the left conformal baffle (11) and the right conformal baffle (12) are respectively in contact with the left side surface and the right side surface of the absorbing honeycomb blank (4), and the upper conformal baffle (10) is in contact with the top surface of the absorbing honeycomb blank (4).
5. The vertical bonding process of the V-shaped cross-section wave-absorbing component according to claim 2, characterized in that: In step S2, first, the upper conformal baffle (10) and the right conformal baffle (12) are removed. Then, the special bonding tooling is fixed on the operating table of the numerical control machine tool. First, keep the left conformal baffle (11) in contact with the left side surface of the absorbing honeycomb blank (4) and machine the right profile of the absorbing honeycomb blank (4) through the numerical control machine tool. Then, remove the left conformal baffle (11) and fix the honeycomb conforming baffle (13) so that the honeycomb conforming baffle (13) is in contact with the right side surface of the absorbing honeycomb blank (4), and then machine the left profile of the absorbing honeycomb blank (4) through the numerical control machine tool, and finally, an absorbing honeycomb with a V - shaped cross - section is made.
6. The vertical bonding process of the V-shaped cross-section wave-absorbing component according to claim 2, characterized in that: In step S3, the calibration film includes a non - isolating film and an adhesive film. The non - porous isolating film is attached to the surface of the adhesive film and can be directly peeled off from the adhesive film.
7. The vertical bonding process of the V-shaped cross-section wave-absorbing component according to claim 6, characterized in that: In step S3, when calibrating the absorbing component assembly, the calibration film is first laid on the absorbing component assembly, then the wave - transmitting skin (3) is laid on the calibration film and positioned through the process positioning holes (9). Then, the absorbing component assembly is bagged and put into the tank for calibration until there is no interference and cavity between the wave - transmitting skin (3) and the absorbing component assembly.
8. The vertical bonding process of the V-shaped cross-section wave-absorbing component according to claim 2, characterized in that: In step S4, when bonding the wave - transmitting skin (3), first remove the calibration film and the wave - transmitting skin (3) in step S3. Then, paste a new wave - transmitting skin (3) on the absorbing component assembly through the adhesive film. Then, install the gantry component on the bottom plate (6), and by applying pressure to the pressure cross - beam (18), the pressure rod (19) moves downward to apply pressure and limit to the wave - transmitting skin (3), so that the wave - transmitting skin (3) closely adheres to the absorbing component assembly.
9. The vertical bonding process of the V-shaped cross-section wave-absorbing component according to claim 2, characterized in that: In step S4, when curing the microwave absorbing component assembly, first vacuum package the microwave absorbing component assembly with a vacuum bag, then install the skin conformal baffle assembly outside the vacuum bag to make the skin conformal baffle (16) fit the microwave absorbing component assembly, and finally cure the microwave absorbing component assembly in a curing oven.
Citation Information
Patent Citations
Forming method of full-height edge-covering sandwich composite material part
CN114801237A
Locating and cementing inspection tool for metal honeycomb structural member of airplane
CN215217459U