Carbon fiber antenna surface forming device and process

Abstract

The invention belongs to the technical field of spaceflight, particularly discloses a carbon fiber antenna surface forming device and process, and provides a carbon fiber antenna surface forming device which comprises a mold body of a spherical structure, the mold body is divided into a front concave surface and a back convex surface, and the back is provided with a large annular flange and a small flange ring which are coaxial with a spherical center axis of the mold body. The large annular flange is arranged on the edge of the outer edge side of the mold, and the small flange ring is detachably arranged in a small flange mounting groove between the edge and the vertex of the mold; mounting references are evenly arranged between the large annular flange and the small annular flange and used for mounting detachable flange edges, one ends of the flange edges make contact with the small flange ring, the other ends of the flange edges make contact with the large annular flange, and a paving area is formed between every two adjacent flange edges. The paving area comprises first areas and second areas which are the same in number; according to the device, the problem that the requirement of high surface precision of a large-caliber split assembly type reflecting surface is not easy to realize is solved.

Description

Technical Field

[0001] The present invention belongs to the field of aerospace technology, and particularly relates to a carbon fiber antenna surface forming device and process. Background Art

[0002] With the rapid development of aerospace technology, the performance requirements for antenna reflectors are becoming increasingly stringent. Due to defects such as high weight, high coefficient of thermal expansion, and easy deformation, traditional metal materials are no longer able to meet the requirements of modern spacecraft for antenna light weight, high precision, and high stability. Carbon fiber composite materials, with their excellent properties such as high specific strength, high specific stiffness, low coefficient of thermal expansion, and strong designability, have gradually become the ideal materials for manufacturing antenna reflectors.

[0003] The carbon fiber antenna surface forming technology involves multiple fields such as materials science, composite material technology, and precision manufacturing. Its core lies in accurately forming carbon fiber prepregs into antenna reflectors with complex curved surface shapes and high-precision profiles through reasonable ply design, mold design, and curing processes. This technology not only needs to ensure the electromagnetic performance of the antenna surface, such as high gain and low standing wave ratio, but also needs to ensure its dimensional stability and profile accuracy in extreme space environments.

[0004] In the early stage, traditional processes such as autoclave molding and compression molding were mostly used for carbon fiber antenna surface forming. However, these processes have problems such as strong equipment dependence, sensitive process parameters, high mold costs, and long production cycles. Especially for large or complex-shaped antenna surfaces, traditional processes are prone to defects such as warping deformation and insufficient profile accuracy, making it difficult to meet the requirements of high-end equipment manufacturing.

[0005] To solve the above problems, a carbon fiber antenna surface forming device and process are proposed, which solve the problem that it is difficult to achieve high requirements for surface accuracy for large-aperture, split-assembled reflectors. Summary of the Invention

[0006] The purpose of the present invention is to propose a carbon fiber antenna surface forming device and process to solve the problems mentioned in the above background art.

[0007] To solve the above technical problems, the present invention provides the following technical solution: A carbon fiber antenna surface forming process, providing a carbon fiber antenna surface forming device, including a mold body with a spherical structure, which is divided into a front concave surface and a back convex surface. The back is provided with a large annular flange and a small flange ring coaxial with the spherical central axis of the mold body. The large annular flange is arranged at the edge of the outer side of the mold, and the small flange ring is detachably arranged in the small flange installation groove between the edge and the vertex of the mold. Installation benchmarks are evenly arranged between the large annular flange and the small annular flange. The installation benchmarks are used to install the detachable flange edge. One end of the flange edge contacts the small flange ring and the other end contacts the large annular flange. A paving area is formed between two adjacent flange edges. The paving area includes the same number of first areas and second areas. Both sides of any first area are second areas. An antenna surface paving engraved line is laid on the back, and a positioning hole 1 is opened at the center. Reinforcing rib paving engraved lines are evenly engraved between the positioning hole 1 and the small flange installation groove. The process includes: Step S1: Clean the mold body and prepare strip-shaped carbon fiber epoxy prepreg. Step S2: Form the center disc of the antenna surface on the mold body according to the positions of the small flange installation groove and the reinforcing rib paving engraved lines. Step S3: Seal the antenna surface formed in Step S2 with a bag film, heat it at a temperature of 80°C for 1 hour, heat it at a temperature of 120°C for 2 hours, and cure it in an oven. Step S4: After removing the bag film, remove the small flange ring and clean the formed antenna surface. Step S5: Install the flange edge on the installation benchmark to form a paving area, and lay a release cloth in the first area to form a five-sided closed structure 1. Step S6: Pave the antenna surface paving engraved line in the first area and form locking points. Step S7: Remove the flange edge and clean the formed antenna surface through the locking points. Step S8: Lay a circle of release cloth in the second area to form a five-sided closed structure 2 by splitting the antenna surface formed in Step S6. Step S9: Pave the antenna surface paving engraved line in the second area. Step S10: Remove the locking points and demold the split antenna surface.

[0008] The present invention further explains that there are eight reinforcing rib paving engraved lines arranged in a circumferential array centered on the positioning hole 1. The widths of the reinforcing rib paving engraved lines and the antenna surface paving engraved lines are the same, and the installation benchmarks correspond to the positions of the reinforcing rib paving engraved lines. A plate surface is formed between two adjacent installation benchmarks. The eight plate surfaces are sequentially spliced into a ring and are sequentially marked with numbers 1-8. There are eight positioning holes 2 on the plate surface. Four of the positioning holes 2 are located at the vertices of the plate surface, and the remaining four are located between the adjacent vertex positioning holes 2, forming a trapezoidal layout.

[0009] The present invention further illustrates that the antenna surface laying lines are provided in the area of the back of the mold body except for the large annular flange, the first positioning hole and the laying lines of the reinforcing ribs.

[0010] The present invention further illustrates that specifically in step S1: the thickness of the carbon fiber epoxy prepreg is 0.40 mm - 0.45 mm and it is cut into strips, and the width of the strip-shaped carbon fiber epoxy prepreg is the same as the width of the laying lines of the reinforcing ribs.

[0011] The present invention further illustrates that specifically in step S2: insert the central positioning block into the first positioning hole to ensure that a central hole is formed in the center of the antenna surface and position the antenna surface, install the small flange ring on the small flange installation groove, lay the strip-shaped carbon fiber epoxy prepreg on the antenna surface laying lines located within the small flange ring to form the central disk with the central hole formed therein, lay the strip-shaped carbon fiber epoxy prepreg on the laying lines of the reinforcing ribs, and form the central disk reinforcing ribs on the central disk.

[0012] The present invention further illustrates that specifically in step S5: install the flange edge according to the installation reference, one end of the flange edge is attached to the large annular flange, and the other end is attached to the outer diameter of the central disk. After installation, an adjacent pair of flange edges form a laying area, and the laying area corresponds to the position of the plate surface. Among them, the plate surfaces numbered 2, 4, 6, and 8 correspond to the first area. Lay the release cloth on the first area and form a five-sided closed structure I. The five-sided closed structure I is: the upper surface is positioned by the outer diameter of the central disk, the two sides are positioned by the flange edges, the bottom is positioned by the mold body, and the lower part is positioned by the large annular flange.

[0013] The present invention further illustrates that specifically in step S6: Lay the strip-shaped carbon fiber epoxy prepreg according to the antenna surface laying lines in the first area, and form antenna surface segments in the first area. Then perform step S3 again to cure the antenna surface. After curing, bolt-connect the antenna surface segments through eight second positioning holes to form locking points.

[0014] The present invention further illustrates that specifically in step S8: the plate surfaces numbered 1, 3, 5, and 7 correspond to the second laying area. Lay the release cloth on the second laying area and form a five-sided closed structure II. The five-sided closed structure II is: the upper surface is positioned by the outer diameter of the central disk, the two sides are positioned by the antenna surface segments, the bottom is positioned by the mold body, and the lower part is positioned by the large annular flange.

[0015] The present invention is further described as follows. Specifically, in step S10: Remove the locking points of the second positioning holes connected to the antenna surface by split bolts, form connection holes at the original locking points, perform integral demolding on the split antenna surface by tearing off the demolding cloth. After demolding is completed, install buckles on the connection holes, and the buckles connect the split antenna surface to form the integral antenna surface.

[0016] The present invention is further described as follows. Release the fixation of the buckles to separate the split antenna surface and the central disk, and perform grinding and spraying on the split antenna surface and the central disk. After spraying is completed, reassemble on the mold body, and verify and detect the appearance, weight, and surface accuracy.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: In the present invention, By adopting an overall spherical design for the mold body, its back integrates structures such as antenna surface paving lines, large circular flanges, first positioning holes, small flange installation grooves, reinforcing rib paving lines, installation benchmarks, and board surface positioning holes. This design not only realizes the precise guidance of carbon fiber paving but also directly limits the diameter of the antenna surface through the large circular flange, ensuring the consistency of the forming dimensions and avoiding the cumbersome operations of multiple calibrations required for traditional molds.

[0018] Through the cooperation of the first positioning holes and the central positioning blocks, the precise positioning of the central hole of the antenna surface is achieved; at the same time, the circumferential array design of the small flange installation grooves and the reinforcing rib paving lines ensures the uniform distribution of the central disk reinforcing ribs, improving the structural strength and electromagnetic performance stability of the antenna surface.

[0019] By constructing a five-sided closed structure I / II with the flange edge and the demolding cloth, the precise definition of the paving area is achieved. This structure uses the outer diameter of the central disk, the flange edge, the mold body, and the large circular flange to form multi-dimensional positioning, controlling the dimensional tolerance of the paving area within ±0.5 mm, and significantly improving the edge warping problem easily generated by traditional open paving.

[0020] By directly forming the antenna surface on the back of the mold body, the problems of poor adaptability of the antenna surface caused by errors in the traditional split forming of the antenna surface and low structural strength of the antenna surface are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings: Figure 1 is the overall structural schematic diagram of the mold body of the embodiment of the present invention; Figure 2 is the structural schematic diagram of the process of step S2 of the embodiment of the present invention; Figure 3It is a schematic structural diagram of the process of step S3 of the embodiment of the present invention; Figure 4 It is a schematic structural diagram of the process of step S4 of the embodiment of the present invention; Figure 5 It is a schematic structural diagram of the process of step S4 of the embodiment of the present invention; Figure 6 It is a schematic structural diagram of the process of step S5 of the embodiment of the present invention; Figure 7 It is a schematic structural diagram of the process of step S6 of the embodiment of the present invention; Figure 8 It is a schematic structural diagram of the process of step S7 of the embodiment of the present invention; Figure 9 It is a schematic structural diagram of the process of step S9 of the embodiment of the present invention; Figure 10 It is a schematic structural diagram of the process of step S10 of the embodiment of the present invention; In the figure: 1. Mold body; 101. Large ring flange; 102. First positioning hole; 103. Small flange installation groove; 104. Reinforcement paving line; 105. Antenna surface paving line; 106. Plate surface; 107. Second positioning hole; 108. Installation reference; 109. Central positioning block; 110. Small flange ring; 111. Flange edge; 112. Paving area; 113. Antenna surface lobes; 2. Antenna surface; 201. Central disk; 202. Central hole; 203. Central disk reinforcement; 204. Connection hole. Detailed implementation manners

[0022] The following further describes the technical solution of the present invention in detail in conjunction with the preferred embodiments and their accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1-10 , the embodiment of the present invention provides a technical solution: a carbon fiber antenna surface forming device, including a mold body 1 and an antenna surface 2, and the mold body 1 is integrally spherical; The mold body 1 and the antenna surface 2 are divided into a front surface and a back surface. The front surface is a concave surface, and the back surface is a convex surface. Based on the back surface of the mold body 1, an antenna surface paving line 105 is provided, and the antenna surface paving line 105 is used for paving carbon fiber along the antenna surface paving line 105 when forming the antenna surface; A large ring flange 101 is fixed on the outer diameter of the mold body 1, and the large ring flange 101 is used to limit the diameter of the carbon fiber antenna surface to be processed; A positioning hole 102 is provided at the center of the back surface of the mold body 1. The positioning hole 102 is used to position the carbon fiber antenna surface to be processed. A small flange mounting groove 103 is provided on the back surface of the mold body 1. The small flange mounting groove 103 is annular. The small flange mounting groove 103 is coaxial with the positioning hole 102 and is located outside the positioning hole 102. Eight reinforcing rib laying lines 104 are provided between the positioning hole 102 and the small flange mounting groove 103. The reinforcing rib laying lines 104 are circularly arrayed based on the center of the positioning hole 102. Eight installation references 108 are provided between the small flange mounting groove 103 and the large annular flange 101. The installation references 108 correspond to the positions of the reinforcing rib laying lines 104.

[0024] A plate surface 106 is formed between two adjacent installation references 108. The eight plate surfaces 106 are sequentially spliced into a ring and are sequentially marked with numbers 1-8. Among them, Figure 1 the number of the plate surface 106 indicated by the reference numeral in the figure is 1, and the numbers are sequentially numbered in a clockwise direction. Eight positioning holes 107 are provided on the plate surface 106. The positioning holes 107 are respectively provided at the four vertices of the plate surface 106. The positioning holes 107 are slightly biased towards the center of the plate surface 106. Based on the positions of the four positioning holes 107, one positioning hole 107 is provided at the center between two adjacent positioning holes 107. The eight positioning holes form a trapezoidal structure to improve the positioning accuracy of the plate surface 106.

[0025] It should be added that: antenna surface laying lines 105 are provided on the back surface of the mold body 1 except for the large annular flange 101, the positioning hole 102 and the reinforcing rib laying lines 104.

[0026] The antenna surface 2 formed by the mold body 1 has the same size as the mold body 1. The antenna surface 2 includes a central disk 201. The central disk 201 is located at the center of the end surface of the antenna surface 2. The central disk 201 includes a central hole 202 and central disk reinforcing ribs 203. The central hole 202 penetrates through the center of the end surface of the antenna surface 2. The central disk 201 is coaxial with the central hole 202 and is located outside the outer diameter of the central hole 202.

[0027] It should be added that: the central disk 201 is arranged based on the position where the small flange mounting groove 103 is provided. The central hole 202 has the same size as the positioning hole 102. The central disk reinforcing ribs 203 are arranged based on the position where the reinforcing rib laying lines 104 are provided.

[0028] The forming process of a carbon fiber antenna surface forming device: Step S1: Clean the mold body 1 and prepare the carbon fiber epoxy prepreg T700.

[0029] Specifically: The thickness of the carbon fiber epoxy prepreg T700 is 0.40 mm - 0.45 mm and it is cut into strips. The width of the strip-shaped carbon fiber epoxy prepreg T700 is the same as the width of the reinforcing rib laying line 104.

[0030] Through step S1, state A is obtained, specifically as shown in Figure 2 .

[0031] Step S2: According to the positions of the small flange installation groove 103 and the reinforcing rib laying line 104, form the central disk 201 of the antenna surface 2 on the mold body 1.

[0032] Specifically: Insert the central positioning block 109 into the first positioning hole 102 to ensure the formation and positioning of the central hole 202 of the antenna surface 2. Install the small flange ring 110 on the small flange installation groove 103. Lay the strip-shaped carbon fiber epoxy prepreg T700 on the antenna surface laying line 105 within the small flange ring 110 to form the central disk 201. Lay the strip-shaped carbon fiber epoxy prepreg T700 on the reinforcing rib laying line 104 to form the central disk reinforcing rib 203.

[0033] Through step S2, state B is obtained, specifically as shown in Figure 3 .

[0034] Step S3: Seal the antenna surface formed in step S2 with a bag film, and heat it at a temperature of 80 °C for 1 hour and at a temperature of 120 °C for 2 hours, and cure it in an oven.

[0035] Specifically: The bag film is made of a high-temperature resistant and transparent material. Cover the formed antenna surface 2 with the bag film and seal the edge of the bag film with sealant to ensure a sealed space is formed inside the bag film. Open ventilation holes on the surface of the bag film, evacuate the inside of the bag film to a vacuum state through the ventilation holes, then seal the ventilation holes, and heat for a duration of 80 °C - 1 hour and 120 °C - 2 hours. After heating is completed, put the mold body 1 and the formed antenna surface 2 into the oven for curing.

[0036] Through step S3, state C is obtained, specifically as shown in Figure 4 .

[0037] Step S4: After removing the bag film, remove the small flange ring 110, clean the formed antenna surface 2 to ensure the accuracy of subsequent forming of the antenna surface. After cleaning, fill the original forming position of the small flange ring 110 with the strip-shaped carbon fiber epoxy prepreg T700.

[0038] Through step S4, state D is obtained, as shown specifically in Figure 5 .

[0039] Step S5: Install the flange edge 111 on the installation reference 108 and lay a circle of release cloth to form a five-sided closed structure I; Specifically: Install the flange edge 111 along the installation reference 108. One end of the flange edge 111 is attached to the large annular flange 101, and the other end is attached to the outer diameter of the center plate 201. After installation, two adjacent flange edges 111 form a laying area 112, which corresponds to the position of the plate surface 106. Among them, the plate surfaces 106 numbered 2, 4, 6, and 8 correspond to the first laying area. Lay the release cloth on the first laying area to form a five-sided closed structure I. The five-sided closed structure I is: positioned by the outer diameter of the center plate 201 on the upper surface, positioned by the flange edge 111 on both sides, positioned by the mold body 1 at the bottom, and positioned by the large annular flange 101 at the lower part.

[0040] Through step S5, state E is obtained, as shown specifically in Figure 6 .

[0041] Step S6: Lay the antenna surface scribed line 105 on the first area of the laying area 112.

[0042] Specifically: Lay the strip-shaped carbon fiber epoxy prepreg T700 according to the antenna surface scribed line 105 in the first area of the laying area 112, and form antenna surface segments 113 in the first area of the laying area 112. Then perform the steps of step S3 again to cure the antenna surface 2. After curing, bolt-connect the antenna surface segments 113 through eight positioning holes II 107 to form locking points.

[0043] Through step S6, state F is obtained, as shown specifically in Figure 7 .

[0044] Step S7: After removing the bag film, remove the flange edge 111 and clean the formed antenna surface 2 to ensure the accuracy of the subsequent forming of the antenna surface; Through step S7, state G is obtained, as shown specifically in Figure 8 .

[0045] Step S8: Lay a circle of release cloth on the second area of the laying area 112 to form a five-sided closed structure II.

[0046] Specifically: The plate surfaces 106 numbered 1, 3, 5, and 7 correspond to the second paving area. A release cloth is paved on the second area to form a five-sided closed structure two. The five-sided closed structure two is positioned by the outer diameter of the center disk 201 on the upper surface, by the antenna surface lobes 113 on both sides, by the mold body 1 at the bottom, and by the large annular flange 101 at the lower part.

[0047] Step S9: Pave the antenna surface paving lines 105 in the second area of the paving area 112.

[0048] Specifically: Lay the strip-shaped carbon fiber epoxy prepreg T700 according to the antenna surface paving lines 105 in the second area of the paving area 112, and form antenna surface lobes 113 in the second area of the paving area 112. Then perform the steps of step S3 again to cure the antenna surface 2.

[0049] Through steps S8 and S9, state H is obtained. See specifically Figure 9 。

[0050] Step S10: Remove the locking points and demold the antenna surface lobes.

[0051] Specifically, remove the locking points of the bolt connection between the positioning holes two 107 and the antenna surface lobes 113 to form connection holes 204 at the original locking points. Demold the antenna surface lobes 113 integrally by tearing off the release cloth. After demolding, install buckles on the connection holes 204, and the buckles connect the antenna surface lobes 113 to form the whole antenna surface 2.

[0052] Step S11: Separate the antenna surface lobes 113 and the center disk 201 by releasing the fixation of the buckles, and grind and spray the antenna surface lobes 113 and the center disk 201. After spraying, reassemble them on the mold body 1 again, and verify and detect the appearance, weight, and surface accuracy.

[0053] Through steps S10 and S11, state I is obtained. See specifically Figure 10 。

[0054] It should be added that when the antenna surface 2 is deformed due to flat wear and collision during long-term use, resulting in a decrease in the accuracy of the antenna surface 2, the antenna surface 2 is calibrated through the positioning holes two 107 and the connection holes 204 and bolted again to the back of the mold body 1. The deformed part of the antenna surface 2 is finely processed to restore the antenna surface 2 secondarily.

[0055] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0056] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A forming process for a carbon fiber antenna surface, characterized in that: Provided is a forming device for a carbon fiber antenna surface, including a mold body with a spherical structure, which is divided into a front concave surface and a back convex surface. On the back, there are a large annular flange and a small flange ring coaxial with the spherical central axis of the mold body. The large annular flange is arranged at the edge of the outer side of the mold, and the small flange ring is detachably arranged in a small flange installation groove between the edge and the vertex of the mold. Installation benchmarks are evenly arranged between the large annular flange and the small annular flange. The installation benchmarks are used to install detachable flange edges. One end of the flange edge contacts the small flange ring and the other end contacts the large annular flange. A laying area is formed between two adjacent flange edges. The laying area includes the same number of first areas and second areas. On both sides of any first area are second areas. On the back, there are antenna surface laying lines engraved and a positioning hole 1 is opened at the center. Strengthening rib laying lines are evenly engraved between the positioning hole 1 and the small flange installation groove. The process includes: Step S1: Clean the mold body and prepare strip-shaped carbon fiber epoxy prepreg. Step S2: According to the positions of the small flange installation groove and the strengthening rib laying lines, form the central disk of the antenna surface on the mold body. Step S3: Seal the antenna surface formed in Step S2 with a bag film, heat it at a temperature of 80 °C for 1 hour, and heat it at a temperature of 120 °C for 2 hours, and cure it through an oven. Step S4: After removing the bag film, remove the small flange ring and clean the formed antenna surface. Step S5: Install flange edges on the installation benchmarks, form a laying area and lay a release cloth in the first area to form a five-sided closed structure 1. Step S6: Lay the antenna surface laying lines in the first area and form locking points. Step S7: Remove the flange edges and clean the formed antenna surface through the locking points. Step S8: Lay a circle of release cloth in the second area to form a five-sided closed structure 2 by splitting the antenna surface formed in Step S6. Step S9: Lay the antenna surface laying lines in the second area. Step S10: Remove the locking points and demold the split antenna surface.

2. The carbon fiber antenna surface forming process according to claim 1, wherein: There are eight strengthening rib laying lines distributed in a circumferential array centered on the positioning hole 1; the widths of the strengthening rib laying lines and the antenna surface laying lines are the same, and the installation benchmarks correspond to the positions of the strengthening rib laying lines. A board surface is formed between two adjacent installation benchmarks. The eight board surfaces are sequentially spliced into a ring and are sequentially numbered 1-8. There are eight positioning holes 2 on the board surface. Four of the positioning holes 2 are located at the vertices of the board surface, and the remaining four are located between the adjacent vertex positioning holes 2, forming a trapezoidal layout.

3. A carbon fiber antenna surface forming process according to claim 2, characterized in that: On the back of the mold body, the antenna surface laying lines are provided in the areas except the large annular flange, the positioning hole 1 and the strengthening rib laying lines.

4. The carbon fiber antenna surface forming process according to claim 3, characterized in that: Specifically in Step S1: The thickness of the carbon fiber epoxy prepreg is 0.40 mm - 0.45 mm and it is cut into strips. The width of the strip-shaped carbon fiber epoxy prepreg is the same as the width of the strengthening rib laying lines.

5. A carbon fiber antenna surface forming process according to claim 4, characterized in that: Specifically for step S2: Insert the center positioning block into the first positioning hole to ensure that a center hole is formed at the center of the antenna surface and position the antenna surface. Install the small flange ring on the small flange mounting groove. Lay the strip-shaped carbon fiber epoxy prepreg on the antenna surface laying score line within the small flange ring to form the center plate with the center hole formed at the center. Lay the strip-shaped carbon fiber epoxy prepreg on the stiffener laying score line to form the center plate stiffener on the center plate.

6. A carbon fiber antenna surface forming process according to claim 5, characterized in that: Specifically for step S5: Install the flange edge along the installation reference. One end of the flange edge is in contact with the large ring flange, and the other end is in contact with the outer diameter of the center plate. After installation, adjacent flange edges form a laying area, and the laying area corresponds to the position of the plate surface. Among them, the plate surfaces numbered 2, 4, 6, and 8 correspond to the first area. Lay the release cloth on the first area to form a five-sided closed structure I. The five-sided closed structure I is: the upper surface is positioned by the outer diameter of the center plate, both sides are positioned by the flange edges, the bottom is positioned by the mold body, and the lower part is positioned by the large ring flange.

7. A carbon fiber antenna surface forming process according to claim 6, characterized in that: Specifically for step S6: Lay the strip-shaped carbon fiber epoxy prepreg according to the antenna surface laying score line in the first area and form antenna surface segments in the first area. Perform step S3 again to cure the antenna surface. After curing, bolt-connect through eight second positioning holes and the antenna surface segments to form locking points.

8. A carbon fiber antenna surface forming process according to claim 7, characterized in that: Specifically for step S8: The plate surfaces numbered 1, 3, 5, and 7 correspond to the second area. Lay the release cloth on the second area to form a five-sided closed structure II. The five-sided closed structure II is: the upper surface is positioned by the outer diameter of the center plate, both sides are positioned by the antenna surface segments, the bottom is positioned by the mold body, and the lower part is positioned by the large ring flange.

9. A carbon fiber antenna surface forming process according to claim 8, characterized in that: Specifically for step S10: Remove the locking points of the bolt connection between the second positioning holes and the antenna surface segments, form connection holes at the original locking points, and perform overall demolding of the antenna surface segments by tearing off the release cloth. After demolding, install buckles on the connection holes, and the buckles connect the antenna surface segments to form the overall antenna surface.

10. A carbon fiber antenna surface forming process according to claim 9, characterized in that: Release the fixation of the buckles to separate the antenna surface segments and the center plate, grind and spray the antenna surface segments and the center plate. After spraying, reassemble on the mold body and verify and detect the appearance, weight, and surface accuracy.

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