CN113547763A - Forming device and forming method for double-sided T-shaped reinforced wall plate - Google Patents
Forming device and forming method for double-sided T-shaped reinforced wall plate Download PDFInfo
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- CN113547763A CN113547763A CN202110854033.2A CN202110854033A CN113547763A CN 113547763 A CN113547763 A CN 113547763A CN 202110854033 A CN202110854033 A CN 202110854033A CN 113547763 A CN113547763 A CN 113547763A
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- stringer
- lower stringer
- mandrel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/342—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
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- Chemical & Material Sciences (AREA)
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- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
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Abstract
The invention discloses a forming device and a forming method of a double-sided T-shaped stiffened wallboard. The tooling main body is provided with a stepped notch corresponding to each lower stringer position, the stepped notch can be used for a lower stringer core mould to pass through, a part is placed on the tooling main body, an upper stringer core mould assembly is placed on the part, pressure pads are placed at the gap of the upper stringer core mould assembly and around a skin, the lower stringer core mould penetrates through the stepped notch from the lower surface of the tooling main body and is clamped in the stepped notch, and a lower stringer plug block is placed in the stepped notches at the two ends of the lower stringer core mould to limit the lower stringer core mould. The invention has simple structure, convenient installation and disassembly and no damage to parts; respectively manufacturing vacuum bags communicated with the inside on two sides of the skin, and applying pressure uniformly; the stringer is singly fixed a position, and the axis precision is high.
Description
Technical Field
The invention relates to the field of manufacturing of composite material parts (components), in particular to a forming device and a forming method of a double-sided T-shaped reinforced wall plate.
Background
The ribbed wallboard has the advantages of high bearing efficiency, good integral sealing performance and the like, can greatly simplify subsequent assembly relation, improves production efficiency, and is widely applied to positions of a moving wing surface, a wing, an empennage and the like. According to the section form of the stringer, the stiffened wall panel can be divided into a plurality of structural types such as T-shaped, I-shaped, J-shaped, hat-shaped and the like, and the bearing characteristic requirements of different sections can be met. In order to further excavate the advantage that the designability of the composite material is strong and match the rigorous requirements of high bearing capacity and low weight in a special area, the double-sided reinforced wall plate is gradually favored by technical personnel.
Different from the single-sided reinforced wallboard, the stringers of the double-sided reinforced wallboard are distributed on two sides of the skin, so that the comprehensive performance can be greatly improved, and the structure weight is reduced. However, because both sides of the skin are of a three-dimensional structure, the operation difficulty of the procedures of positioning, combining, packaging and the like of the stringers is increased, and the problems of uneven pressure on both sides of the skin and the like, local false vacuum, part crushing in the demolding process and the like are easily caused. The common manufacturing scheme of the reinforced wall plate can not effectively solve the problems. Therefore, a forming device and a forming method special for the double-sided T-shaped reinforced wall plate are urgently needed, the operation difficulty is reduced, the pressures of the left side and the right side of the skin are balanced, the false vacuum is avoided, and the quality stability of the double-sided T-shaped reinforced wall plate is improved.
Disclosure of Invention
The invention discloses a forming device and a forming method of a double-sided T-shaped reinforced wall plate, which can complete the manufacture of the double-sided T-shaped reinforced wall plate according to the technological methods of co-curing, co-bonding, secondary bonding and the like. The device has the advantages of simple structure, uniform pressure conduction, accurate stringer positioning and stable product quality.
A forming device of a double-sided T-shaped stiffened wallboard is characterized by comprising a tool main body, a lower stringer core mould, a lower stringer plugging block, an upper stringer core mould assembly, an upper stringer positioning block and a pressure pad, wherein the tool main body is of a plate-shaped structure, a step type notch for the lower stringer core mould to pass through is arranged at the position corresponding to each lower stringer on the upper surface of the upper stringer positioning block, a part is placed on the tool main body, the upper stringer core mould component is placed on the part, the upper stringer positioning block is fixed at the end of the upper stringer core mould component on one side of the upper surface of the tool main body, the upper stringer mandrel component is limited, the pressure pads are placed at the gap of the upper stringer mandrel component and on the periphery of the skin, the lower stringer mandrel passes through the stepped notch from the lower surface of the tool main body, and is clamped in the stepped notch, and the lower stringer plugging block is placed in the stepped notches at the two ends of the lower stringer core mold to limit the lower stringer core mold. The tool main body is provided with a rectangular sink at the position corresponding to one side end of each upper stringer.
The upper stringer core mould assembly comprises an upper stringer integral core mould and an upper stringer segmented core mould which are respectively arranged on two sides of an upper stringer, the end planes of the upper stringer segmented core mould corresponding to the rectangular sunken part of the tool main body are respectively provided with 2 positioning blind holes which are consistent with the positioning through holes on the upper stringer positioning blocks, the upper stringer integral core mould and the upper stringer segmented core mould combined into a whole are symmetrical in structure, the cross section is trapezoidal, the height of the upper stringer vertical rib is equal to the height of the upper stringer vertical rib, the width of the upper stringer segmented core mould is equal to the bottom edge surface of one side of the upper stringer, the length of each segment is 1-1.5 mm, and the segments are overlapped in a Z shape.
The lower stringer mandrel is of a left and right symmetrical split structure, the length of the lower stringer mandrel is equal to that of the lower stringer, and the height of the lower stringer mandrel is equal to that of the lower stringer stud; the width of one side of the lower stringer mandrel is consistent with the width of one side of the bottom edge surface of the lower stringer; the bottom of the lower stringer mandrel is provided with a rectangular staggered platform, and the width of the rectangular staggered platform is consistent with the width of the step type notch.
The step width of the step-type notch on the tool main body is 0.1-0.3 mm larger than the theoretical width single side of the bottom edge surface of the lower stringer; the length of the single side exceeds the skin allowance area by 20-100 mm, and the depth of the single side is 0.2-0.35 mm greater than the sum of the thickness of the rectangular slab staggering of the lower stringer core mould and the theoretical thickness of the bottom edge surface of the lower stringer; the width of the slot is 2/3 the theoretical width of the bottom edge face of the lower stringer.
The cross-sectional appearance of the lower stringer plugging blocks is consistent with that of the stepped notch cross-sectional appearance, the thickness of the lower stringer plugging blocks is 50-150 mm, 2-3 lower stringer plugging blocks are placed at the end of each lower stringer, and the lower stringer plugging blocks on the outermost side completely exceed the skin allowance area. Each lower stringer plugging block is perpendicular to the bottom surface and is provided with 2 air guide through holes.
The upper stringer positioning block is inserted into a rectangular sink on the tool body, and the cross-sectional shape of the leaked part is consistent with the cross-sectional shape of the upper stringer, the upper stringer integral core mold and the upper stringer segmented core mold after combination.
A forming method of a double-sided T-shaped reinforced wall plate is characterized by comprising the following steps:
1, manufacturing an independent vacuum bag on the lower surface of a tool main body at the position of each lower stringer;
2, paving and sticking 1-5 layers of demolding cloth at the step-type notch of the tool main body;
3 combining each lower stringer with a corresponding lower stringer mandrel;
4, integrally placing the combined lower stringer and lower stringer core mold into a stepped notch of the tool main body, and enabling the lower stringer and the lower stringer core mold to penetrate through the notch to extend out;
5, measuring the step difference between the bottom edge surface of each lower stringer and the upper surface of the tool main body, and adjusting the layer number of the demoulding cloth in the step type notch area until the step difference between the bottom edge surface of each lower stringer and the upper surface of the tool main body is-0.1 mm;
6 placing a plurality of lower stringer plugging blocks at two ends of each lower stringer;
7 paving 1 layer of adhesive film on the bottom edge surface of the lower stringer;
8, paving a skin on the upper surface of the tool main body, and compacting;
9 paving 1 layer of adhesive film at the theoretical positions of all the upper stringers;
10 placing all upper stringers in place;
11, installing a stringer positioning block in the rectangular sunken part of the tool main body;
12 placing an upper stringer segmented mandrel on one side of each upper stringer;
13 fixing the upper stringer subsection core mould at the end head by using a positioning pin;
14 finely adjusting the position of the upper stringer to ensure that the upper stringer is tightly jointed with the upper stringer sectional core mold;
15 placing an upper stringer integral mandrel on the other side of each upper stringer;
16 placing pressure pads between the upper stringers and around the skin;
17 manufacturing a vacuum bag, and curing in an autoclave;
18 removing all upper stringer positioning blocks;
19 removing all upper stringer integral core moulds and upper stringer segmented core moulds;
20 removing the pressure pad;
21 removing all exposed lower stringer blocks;
22 pushing the lower stringer core mould to integrally eject the reinforced wall plate component;
all lower stringer mandrels are removed 23.
The forming device and the forming method have the following advantages: 1) the structure is simple, the installation and the removal are convenient, and the parts can not be damaged; 2) respectively manufacturing vacuum bags communicated with the inside on two sides of the skin, and applying pressure uniformly; 3) all stringers are positioned independently, and the axis accuracy is high.
Drawings
FIG. 1 schematic view of a molding apparatus
FIG. 2 is a cross-sectional view of a molding apparatus
FIG. 3 is a schematic view of a Z-lap joint
FIG. 4 is a schematic view of a stringer mandrel assembly
The numbering in the figures illustrates: 1-a tool main body, 2-a skin, 3-an upper stringer segmented core mold, 4-an upper stringer integral core mold, 5-an upper stringer, 6-a pressure pad, 7-a positioning pin, 8-an upper stringer positioning block, 9-a lower stringer plugging block, 10-a lower stringer, 11-a lower stringer core mold and 12-a lower stringer core mold component.
Detailed Description
As shown in fig. 1-4, the present invention is a forming device for a double-sided T-shaped stiffened panel, which is characterized in that the forming device comprises a tool body 1, a lower stringer core mold 11, a lower stringer blocking block 9, an upper stringer core mold assembly 12, an upper stringer positioning block 8, and a pressure pad 6, wherein the tool body 1 is a plate-shaped structure, a stepped notch for the lower stringer core mold to pass through is formed at a position corresponding to each lower stringer, the part is placed on the tool body 1, the upper stringer core mold assembly 12 is placed on the part, the upper stringer positioning block 8 is fixed at the end of the upper stringer core mold assembly 12 on one side of the upper surface of the tool body 1, the upper stringer core mold assembly 12 is limited, the pressure pad 6 is placed at the gap of the upper stringer core mold assembly 12 and around the skin 2, the lower stringer core mold 11 passes through the stepped notch from the lower surface of the tool body 1, and clamped in the stepped notch, and the lower stringer plugging block 9 is placed in the stepped notch at the two ends of the lower stringer core mold 11 to limit the lower stringer core mold 11. The tool body 1 is provided with a rectangular sink at the position corresponding to one side end of each upper stringer.
The upper stringer core mould component 12 comprises an upper stringer whole core mould 4 and an upper stringer segmented core mould 3 which are respectively arranged at two sides of the upper stringer, the end plane of the upper stringer segmented core mould 3 corresponding to the rectangular sunken part of the tool main body 1 is provided with 2 positioning blind holes which are consistent with the positioning through holes on the upper stringer positioning blocks 8, the upper stringer whole core mould 4 and the upper stringer segmented core mould 3 which is combined into a whole are symmetrical in structure, the section is trapezoidal, the height of the section is equal to the height of the upright ribs of the upper stringer, the width of the section is equal to the width of the single-side bottom edge surface of the upper stringer, the length of each section is 1-1.5 mm, and the sections are in Z-shaped lap joint.
The lower stringer mandrel 11 is of a left and right symmetrical split structure, the length of the lower stringer mandrel is equal to that of the lower stringer, and the height of the lower stringer mandrel is equal to that of the lower stringer stud; the width of one side of the lower stringer mandrel 11 is the same as the width of one side of the bottom edge face of the lower stringer; the bottom of the lower stringer mandrel 11 is provided with a rectangular dislocation, and the width of the rectangular dislocation is consistent with the step width of the step type notch.
The step width of the step-type notch on the tool main body 1 is 0.1-0.3 mm larger than the theoretical width single side of the bottom edge surface of the lower stringer; the length of the single side exceeds the skin allowance area by 20 mm-100 mm, and the depth of the single side is 0.2 mm-0.35 mm greater than the sum of the thickness of the rectangular slab staggering of the lower stringer core die 11 and the theoretical thickness of the bottom edge surface of the lower stringer; the width of the slot is 2/3 the theoretical width of the bottom edge face of the lower stringer.
The cross-sectional shape of the lower stringer plugging block 9 is consistent with that of the stepped notch cross-sectional shape, the thickness is 50-150 mm, 2-3 lower stringer plugging blocks 9 are respectively placed at the end of each lower stringer, and the lower stringer plugging block 9 on the outermost side completely exceeds the skin allowance area. Each lower stringer plugging block 9, perpendicular to its bottom surface, is provided with 2 air guide through holes.
The upper stringer positioning block 8 is inserted into a rectangular depression in the tool body 1, and the cross-sectional shape of the leaked portion is identical to the cross-sectional shape of the upper stringer, the upper stringer integral core mold 4 and the upper stringer segmented core mold 3 after combination.
A forming method of a double-sided T-shaped reinforced wall plate is characterized by comprising the following steps:
1, manufacturing an independent vacuum bag on the lower surface of a tool main body 1 at the position of each lower stringer;
2, paving and sticking 1-5 layers of demolding cloth at the step-type notch of the tool main body 1;
3 combining each lower stringer with a corresponding lower stringer mandrel 11;
4, integrally placing the combined lower stringer and lower stringer core mold 11 into the stepped notch of the tool main body 1, and enabling the lower stringer and lower stringer core mold 11 to penetrate through the notch to extend out;
5, measuring the step difference between the bottom edge surface of the lower stringer and the upper surface of the tool main body 1, and adjusting the layer number of the demoulding cloth in the step type notch area until the step difference between the bottom edge surface of the lower stringer and the upper surface of the tool main body 1 is-0.1 mm;
6 placing a plurality of lower stringer blocking blocks 9 at two ends of each lower stringer;
7 paving 1 layer of adhesive film on the bottom edge surface of the lower stringer;
8, paving a skin on the upper surface of the tool main body 1, and compacting;
9 paving 1 layer of adhesive film at all theoretical positions of the upper stringer;
10 placing all upper stringers in place;
11, installing a stringer positioning block 8 in the rectangular sunken part of the tool main body 1;
12 placing an upper stringer segmented mandrel 3 on one side of each upper stringer;
13 fixing the upper stringer subsection core mold 3 at the end by using a positioning pin;
14 finely adjusting the position of the upper stringer to ensure that the upper stringer is tightly attached to the upper stringer segmented core mold 3; 15 placing an upper stringer unitary mandrel 4 on the other side of each upper stringer;
16 placing pressure pads 6 between the upper stringers and around the skin;
17 manufacturing a vacuum bag, and curing in an autoclave;
18, removing all upper stringer positioning blocks 8;
19 removing all the upper stringer integral core dies 4 and the upper stringer segmented core dies 3;
20 removing the pressure pad 6;
21 removing all exposed lower stringer blocks 9;
22, pushing the lower stringer core mould 11 to integrally eject the reinforced wall plate component;
all of the lower stringer core 11 is removed 23.
Claims (9)
1. A forming device of a double-sided T-shaped stiffened wallboard is characterized by comprising a tool main body, a lower stringer core mould, a lower stringer plugging block, an upper stringer core mould assembly, an upper stringer positioning block and a pressure pad, wherein the tool main body is of a plate-shaped structure, a step type notch for the lower stringer core mould to pass through is arranged at the position corresponding to each lower stringer on the upper surface of the upper stringer positioning block, a part is placed on the tool main body, the upper stringer core mould component is placed on the part, the upper stringer positioning block is fixed at the end of the upper stringer core mould component on one side of the upper surface of the tool main body, the upper stringer mandrel component is limited, the pressure pads are placed at the gap of the upper stringer mandrel component and on the periphery of the skin, the lower stringer mandrel passes through the stepped notch from the lower surface of the tool main body, and is clamped in the stepped notch, and the lower stringer plugging block is placed in the stepped notches at the two ends of the lower stringer core mold to limit the lower stringer core mold.
2. The apparatus of claim 1, wherein a rectangular depression is formed in the tool body at a position corresponding to one end of each upper stringer.
3. The apparatus of claim 1, wherein the upper stringer mandrel assembly comprises an upper stringer integral mandrel and an upper stringer segmented mandrel, which are respectively disposed on both sides of the upper stringer, and each of the upper stringer segmented mandrel end planes corresponding to the rectangular depression of the tool body has 2 positioning blind holes corresponding to the positioning through holes of the upper stringer positioning block, the upper stringer integral mandrel and the upper stringer segmented mandrel combined as a whole are symmetrical in structure, have a trapezoidal cross section, have the same height as the upper stringer vertical rib, have the same width as the single-side bottom edge surface of the upper stringer, and are overlapped in a zigzag manner, each section has a length of 1m to 1.5 mm.
4. The forming device of a double-sided T-shaped stiffened panel of claim 1, wherein the lower stringer mandrel is of a left and right symmetrical split structure, the length of which is equal to that of the lower stringer and the height of which is equal to that of the lower stringer stud; the width of one side of the lower stringer mandrel is consistent with the width of one side of the bottom edge surface of the lower stringer; the bottom of the lower stringer mandrel is provided with a rectangular staggered platform, and the width of the rectangular staggered platform is consistent with the width of the step type notch.
5. The apparatus of claim 1, wherein the step width of the stepped notch is 0.1mm to 0.3mm larger than the theoretical width of the lower stringer base edge surface; the length of the single side exceeds the skin allowance area by 20-100 mm, and the depth of the single side is 0.2-0.35 mm greater than the sum of the thickness of the rectangular slab staggering of the lower stringer core mould and the theoretical thickness of the bottom edge surface of the lower stringer; the width of the slot is 2/3 the theoretical width of the bottom edge face of the lower stringer.
6. The forming device of a double-sided T-shaped stiffened wall panel of claim 1, wherein the cross-sectional profile of the lower stringer blocks is consistent with the cross-sectional profile of the stepped notch, the thickness of the lower stringer blocks is 50mm to 150mm, 2 to 3 lower stringer blocks are respectively placed at the end of each lower stringer, and the lower stringer blocks at the outermost side are completely beyond the skin allowance region.
7. The apparatus of claim 1, wherein each of the lower stringer blocks has 2 air guide holes formed perpendicular to the bottom surface thereof.
8. The apparatus of claim 1, wherein the upper stringer positioning block is inserted into a rectangular depression formed in the tool body, and the cross-sectional profile of the leaking portion is identical to the cross-sectional profile of the upper stringer, the upper stringer integral core mold, and the upper stringer segmented core mold after combination.
9. A forming method of a double-sided T-shaped reinforced wall plate is characterized by comprising the following steps:
9-1, manufacturing an independent vacuum bag on the lower surface of the tool main body at the position of each lower stringer;
9-2, paving and sticking 1-5 layers of demolding cloth at the step-type notch of the tool main body;
9-3 combining each lower stringer with a corresponding lower stringer mandrel;
9-4 integrally placing the combined lower stringer and lower stringer mandrel into the stepped notch of the tool main body, and enabling the lower stringer and the lower stringer mandrel to penetrate through the notch to extend out;
9-5, measuring the step difference between the bottom edge surface of each lower stringer and the upper surface of the tool main body, and adjusting the layer number of the demoulding cloth in the step type notch area until the step difference between the bottom edge surface of each lower stringer and the upper surface of the tool main body is-0.1 mm;
9-6 placing a plurality of lower stringer plugging blocks at two ends of each lower stringer;
9-7, paving 1 layer of adhesive film on the bottom edge surface of the lower stringer;
9-8, paving a skin on the upper surface of the tool main body, and compacting;
9-9 paving 1 layer of adhesive film at the theoretical positions of all the upper stringers;
9-10 placing all upper stringers in place;
9-11, installing a stringer positioning block in the rectangular sunken part of the tool main body;
9-12 placing an upper stringer segmented mandrel on one side of each upper stringer;
9-13, fixing the upper stringer subsection core mould at the end head by using a positioning pin;
9-14 finely adjusting the position of the upper stringer to ensure that the upper stringer is tightly attached to the upper stringer segmented core mold;
9-15 placing an upper stringer integral mandrel on the other side of each upper stringer;
9-16 placing pressure pads between the upper stringers and around the skin;
9-17, manufacturing a vacuum bag, and curing in an autoclave;
9-18 removing all upper stringer positioning blocks;
9-19 removing all upper stringer integral core moulds and upper stringer segmented core moulds;
9-20, removing the pressure pad;
9-21 removing all exposed lower stringer blocks;
9-22, pushing the lower stringer core mold to integrally eject the reinforced wall plate assembly;
9-23 all lower stringer mandrels are removed.
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| CN202110854033.2A CN113547763B (en) | 2021-07-27 | 2021-07-27 | Forming device and forming method for double-sided T-shaped reinforced wall plate |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114131958A (en) * | 2021-11-12 | 2022-03-04 | 中航西安飞机工业集团股份有限公司 | T-shaped stringer batch forming device and using method |
| CN114274543A (en) * | 2021-12-15 | 2022-04-05 | 成都飞机工业（集团）有限责任公司 | Reinforced skin positioning and forming method |
| CN114953505A (en) * | 2022-05-24 | 2022-08-30 | 上海晟纤复合材料科技有限公司 | Method for forming stop end of stringer of composite material stiffened wallboard |
| CN114953506A (en) * | 2022-05-24 | 2022-08-30 | 上海晟纤复合材料科技有限公司 | Co-curing forming method for I-shaped reinforced wall plate made of composite material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105965917A (en) * | 2016-06-20 | 2016-09-28 | 中国商用飞机有限责任公司 | Co-curing forming technological method for composite fuselage frame body with ribs added to two sides |
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2021
- 2021-07-27 CN CN202110854033.2A patent/CN113547763B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105965917A (en) * | 2016-06-20 | 2016-09-28 | 中国商用飞机有限责任公司 | Co-curing forming technological method for composite fuselage frame body with ribs added to two sides |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114131958A (en) * | 2021-11-12 | 2022-03-04 | 中航西安飞机工业集团股份有限公司 | T-shaped stringer batch forming device and using method |
| CN114274543A (en) * | 2021-12-15 | 2022-04-05 | 成都飞机工业（集团）有限责任公司 | Reinforced skin positioning and forming method |
| CN114953505A (en) * | 2022-05-24 | 2022-08-30 | 上海晟纤复合材料科技有限公司 | Method for forming stop end of stringer of composite material stiffened wallboard |
| CN114953506A (en) * | 2022-05-24 | 2022-08-30 | 上海晟纤复合材料科技有限公司 | Co-curing forming method for I-shaped reinforced wall plate made of composite material |
| CN114953505B (en) * | 2022-05-24 | 2023-10-03 | 上海晟纤复合材料有限公司 | Molding method for stringer cut-off end of composite reinforced wallboard |
| CN114953506B (en) * | 2022-05-24 | 2024-04-19 | 上海晟纤复合材料有限公司 | Co-curing forming method for composite material I-shaped reinforced wallboard |
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| CN113547763B (en) | 2022-11-01 |
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