CN113183493B - Forming tool and forming method for honeycomb sandwich wall plate with foam structure at tail edge - Google Patents
Forming tool and forming method for honeycomb sandwich wall plate with foam structure at tail edge Download PDFInfo
- Publication number
- CN113183493B CN113183493B CN202110393205.0A CN202110393205A CN113183493B CN 113183493 B CN113183493 B CN 113183493B CN 202110393205 A CN202110393205 A CN 202110393205A CN 113183493 B CN113183493 B CN 113183493B
- Authority
- CN
- China
- Prior art keywords
- foam
- honeycomb sandwich
- tail edge
- main body
- cover plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/74—Moulding material on a relatively small portion of the preformed part, e.g. outsert moulding
-
- 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
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/70—Completely encapsulating inserts
-
- 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
Abstract
The forming tool and the forming method for the honeycomb sandwich wall plate with the foam structure at the tail edge comprise a main body die, foam supporting bars, a foam area uniform pressure cover plate and a laminate area uniform pressure cover plate, wherein the main body die comprises a die panel; the honeycomb sandwich wall plate comprises an outer skin, an inner skin of the honeycomb sandwich structure wall plate, a honeycomb core and a foam core; a foam limiting boss is arranged on the main body mould, and a foam supporting bar positioning block is further arranged on the main body mould. By laying an outer skin over a mould face plate of a main body mould; laying the honeycomb core on the outer skin, and then laying the inner skin; positioning the foam support bars on the inner skin, turning over the inner skin and paving the inner skin on the foam support bars; positioning the foam core on the outer skin, turning over the outer skin and paving the outer skin on the foam core and the foam support bars to form a tail edge foam structure; and respectively placing the foam area uniform pressure cover plate and the laminate area uniform pressure cover plate on a foam area and a laminate area of the tail edge foam structure, and packaging and then entering an autoclave for thermoforming.
Description
Technical Field
The invention relates to the technical field of composite material manufacturing, in particular to a forming tool and a forming method for a honeycomb sandwich wall plate with a foam structure at the tail edge.
Background
The composite material has become one of the most important aviation structural materials in the present generation due to the characteristics of high specific strength, high specific hardness, strong designability, good fatigue fracture resistance, corrosion resistance, good dimensional stability and convenience for large-area integral forming. Sandwich structure composite materials are currently known as structural materials which save materials and have a very large strength-to-weight ratio, and are widely applied to structures such as rudders, flaperons, wingtip winglets and the like of airplanes. Compared with solid materials, the sandwich structure composite material only uses 1-10% of the substituted materials as effective materials, and is obviously a light material with great potential, material saving and small energy consumption. The honeycomb sandwich structure wallboard is a sandwich structure consisting of an outer skin, a thin honeycomb and an inner skin, and sometimes in the design process, in order to improve the rigidity of the honeycomb sandwich structure wallboard, a foam sandwich structure is often added at the tail edge of the honeycomb wallboard. How to solve the forming problem of the honeycomb sandwich wall plate with the foam structure at the tail edge and ensure the forming internal quality and the profile precision is an important research content.
Disclosure of Invention
In order to solve the problem of forming the honeycomb sandwich wall plate with the foam structure at the tail edge and ensure the forming internal quality and the profile precision of the honeycomb sandwich wall plate, the embodiment of the invention provides a forming tool and a forming method for the honeycomb sandwich wall plate with the foam structure at the tail edge. The specific technical scheme is as follows:
the embodiment of the invention provides a honeycomb sandwich wall plate forming tool for a foam structure at the tail edge, which comprises a main body mould, foam supporting bars, a foam area uniform pressure cover plate and a laminate area uniform pressure cover plate, wherein the main body mould comprises a mould panel; the upper molded surface of the main body mould is consistent with the lower molded surface of the honeycomb sandwich wall plate with the foam structure at the tail edge; the honeycomb sandwich wall plate comprises an outer skin, an inner skin of a honeycomb sandwich structure wall plate, a honeycomb core and a foam core; the main body mould is used for placing the honeycomb sandwich wallboard with a foam structure at the tail edge; the main body mould is provided with a foam limiting boss, and the main body mould further comprises a foam support strip positioning block which is positioned at the end head of the foam core in the length direction and used for positioning the foam support strip.
Furthermore, the side surface of the foam limiting boss is consistent with the outer side molded surface of the foam structure carried by the honeycomb sandwich wall plate, and the positioning surface of the foam support bar positioning block is consistent with the end surface of the foam core; the outer molded surfaces of the foam supporting bars are consistent with the inner molded surfaces of the foam structures carried by the honeycomb wall plate, and the lower molded surfaces of the foam area pressure equalizing cover plates are consistent with the upper molded surfaces of the foam structures; the lower molded surface of the plate area uniform pressure cover plate is consistent with the upper molded surface of the plate area of the honeycomb sandwich wall plate above the foam support bars.
Furthermore, the length of the foam support bars is greater than or equal to the length of the foam structure, the length of the foam area pressure equalizing cover plate is consistent with the length of the foam structure, and the length of the laminate area pressure equalizing cover plate is consistent with the length of the foam area pressure equalizing cover plate.
Furthermore, the main body mould is made of Q235 steel by numerical control machining, and a solid mould or a large-opening frame mould can be adopted.
Furthermore, the foam supporting strip is manufactured by Q235 steel numerical control machining, can be manufactured in sections if the length of the foam supporting strip is larger than a meter, and is provided with a threaded hole on the end face of one side of the non-working molded surface for the demolding process of the foam supporting strip.
Furthermore, the foam area pressure equalizing cover plate and the laminate area pressure equalizing cover plate are made of composite material laminates or aluminum plates with the thickness of 2 mm.
A second aspect of the present invention provides a method for forming a honeycomb sandwich panel having a foam structure at its trailing edge, comprising the steps of:
laying a honeycomb sandwich structure wall plate outer skin on a mould panel of a main body mould;
laying the honeycomb core on the outer skin, and then laying the inner skin of the honeycomb sandwich structure;
positioning the foam support bars on the inner skin through foam support bar positioning blocks, and turning over the inner skin and paving the inner skin on the foam support bars;
positioning the tail edge foam core on the outer skin of the honeycomb sandwich structure wall plate through the foam limiting lug boss and the foam supporting strip 2, and then turning over the outer skin and paving the outer skin on the tail edge foam core and the foam supporting strip to form a tail edge foam structure;
and respectively placing the foam area uniform pressure cover plate and the laminate area uniform pressure cover plate on a foam area and a laminate area of the tail edge foam structure, and packaging and then entering an autoclave for thermoforming.
The embodiment of the invention provides a honeycomb sandwich wall plate forming tool for a foam structure at the tail edge, which comprises a main body mould, foam supporting bars, a foam area uniform pressure cover plate and a laminate area uniform pressure cover plate, wherein the main body mould comprises a mould panel; the upper molded surface of the main body mould is consistent with the lower molded surface of the honeycomb sandwich wall plate with the foam structure at the tail edge; the honeycomb sandwich wall plate comprises an outer skin, an inner skin of a honeycomb sandwich structure wall plate, a honeycomb core and a foam core; the main body mould is used for placing the honeycomb sandwich wallboard with a foam structure at the tail edge; the main body mould is provided with a foam limiting boss, and the main body mould further comprises a foam support strip positioning block which is positioned at the end head of the foam core in the length direction and used for positioning the foam support strip. Laying a honeycomb sandwich structure wall plate outer skin on a mould panel of a main body mould; laying the honeycomb core on the outer skin, and then laying the inner skin of the honeycomb sandwich structure; positioning the foam support bars on the inner skin through foam support bar positioning blocks, and turning over the inner skin and paving the inner skin on the foam support bars; positioning the tail edge foam core on an outer skin of the honeycomb sandwich structure wall plate through a foam limiting boss and a foam support bar, and turning over the outer skin and paving the outer skin on the tail edge foam core and the foam support bar to form a tail edge foam structure; and respectively placing the foam area pressure equalizing cover plate and the laminate area pressure equalizing cover plate on a foam area and a laminate area of the tail edge foam structure, and after packaging, entering an autoclave for thermoforming. The honeycomb sandwich wall plate forming tool is simple to operate, the problem of forming of the honeycomb sandwich wall plate with the foam structure at the tail edge is solved, and the forming internal quality and the profile precision of the honeycomb sandwich wall plate are guaranteed.
Drawings
FIG. 1 is a schematic view of a honeycomb sandwich panel forming tool for a foam structure at the tail edge;
FIG. 2 is a schematic cross-sectional view of a honeycomb sandwich panel forming tool for a foam structure at the tail edge along the length direction of a vertical foam strip at the center plane of a mold;
FIG. 3 is a top view of a foam positioning tool for a honeycomb sandwich panel forming tool with a foam structure at the tail edge;
in the figure: 1. a main body mold; 2. a foam support strip; 3. the foam area is provided with a pressure equalizing cover plate; (ii) a 4. The cover plate is uniformly pressed in the layer plate area; 5. a trailing edge foam core; 6. a honeycomb sandwich structure wallboard outer skin; 7. an inner skin of a honeycomb sandwich structure; 8. a honeycomb core; 9. a main body mould panel 10 and a foam limiting boss; 11. foam support strip locating piece.
Detailed Description
The present invention is described below with reference to the accompanying drawings, but the present invention is not limited thereto.
Referring to fig. 1-3, fig. 1 is a schematic view of a honeycomb sandwich panel forming tool for a foam structure at the tail edge; FIG. 2 is a schematic cross-sectional view of a honeycomb sandwich panel forming tool for a foam structure at the tail edge along the length direction of a vertical foam strip at the center plane of a mold; FIG. 3 is a top view of a foam positioning tool for a honeycomb sandwich panel forming tool with a foam structure at the tail edge.
The embodiment of the invention provides a honeycomb sandwich wall plate forming tool for a foam structure at the tail edge, which comprises a main body mould 1, foam supporting bars 2, a foam area pressure equalizing cover plate 3 and a laminate area pressure equalizing cover plate 4, wherein the main body mould 1 comprises a mould panel 9; the upper profile of the main body mould 1 is consistent with the lower profile of the honeycomb sandwich wall plate with the foam structure at the tail edge; the honeycomb sandwich wall plate comprises an outer skin 6, an inner skin 7 of the honeycomb sandwich structure wall plate, a honeycomb core 8 and a foam core 5; the main body mould 1 is used for placing the honeycomb sandwich wallboard with a foam structure at the tail edge; a foam limiting boss 10 is arranged on the main body die 1, and the main body die 1 further comprises a foam support strip positioning block 11 which is positioned at the end head of the foam core 5 in the length direction and used for positioning the foam support strip 2.
The side surface of the foam limiting boss 10 is consistent with the outer side molded surface of the foam structure carried by the honeycomb sandwich wall plate, and the positioning surface of the foam support bar positioning block 11 is consistent with the end surface of the foam core 5; the outer molded surfaces of the foam support bars 2 are consistent with the inner molded surfaces of the foam structures carried by the honeycomb wall plates, and the lower molded surfaces of the foam area pressure equalizing cover plates 3 are consistent with the upper molded surfaces of the foam structures; the lower profile of the laminate area pressure equalizing cover plate 4 is consistent with the upper profile of the laminate area of the honeycomb sandwich wall plate above the foam supporting bars 2.
The length of the foam support bars 2 is larger than or equal to the length of the foam structure, the length of the foam area pressure equalizing cover plate 3 is consistent with that of the foam structure, and the length of the laminate area pressure equalizing cover plate 4 is consistent with that of the foam area pressure equalizing cover plate.
Preferably, the main body die 1 of the invention is manufactured by numerical control machining of Q235 steel, and a solid die or a large-opening frame die can be adopted.
The foam support bar 11 is made of Q235 steel through numerical control machining, can be made in sections if the length of the foam support bar is larger than 1 m, and is provided with a threaded hole in the end face of one side of the non-working molded surface for the demolding process of the foam support bar.
The foam area pressure equalizing cover plate 3 and the laminate area pressure equalizing cover plate 4 are made of composite material laminates or aluminum plates with the thickness of 2 mm.
The embodiment of the invention provides a honeycomb sandwich wall plate forming tool for a foam structure at the tail edge, which comprises a main body mould 1, foam supporting bars 2, a foam area pressure equalizing cover plate 3 and a laminate area pressure equalizing cover plate 4, wherein the main body mould 1 comprises a mould panel 9; the upper molded surface of the main body mould 1 is consistent with the lower molded surface of the honeycomb sandwich panel with the foam structure at the tail edge; the honeycomb sandwich wall plate comprises an outer skin 6, an inner skin 7 of the honeycomb sandwich structure wall plate, a honeycomb core 8 and a foam core 5; the main body mould 1 is used for placing the honeycomb sandwich wallboard with a foam structure at the tail edge; a foam limiting boss 10 is arranged on the main body die 1, and the main body die 1 further comprises a foam support strip positioning block 11 which is positioned at the end head of the foam core 5 in the length direction and used for positioning the foam support strip 2. The method comprises the steps of (1) paving a honeycomb sandwich structure wall plate outer skin 6 on a mould panel 9 of a main body mould 1; laying the honeycomb core 8 on the outer skin 6, and then laying the inner skin 7 of the honeycomb sandwich structure; positioning the foam support bars 2 on the inner skin 7 through foam support bar positioning blocks 11, and turning over the inner skin 7 and paving the inner skin on the foam support bars 2; positioning a tail edge foam core 5 on an outer skin 6 of a honeycomb sandwich structure wall plate through a foam limiting boss 10 and a foam supporting strip 2, and turning over the outer skin 6 and paving the outer skin on the tail edge foam core 5 and the foam supporting strip 2 to form a tail edge foam structure; and respectively placing the foam area pressure equalizing cover plate 3 and the laminate area pressure equalizing cover plate 4 on a foam area and a laminate area of the tail edge foam structure, and packaging and then entering an autoclave for thermoforming. The honeycomb sandwich wall plate forming tool is simple to operate, the problem of forming of the honeycomb sandwich wall plate with the foam structure at the tail edge is solved, and the forming internal quality and the profile precision of the honeycomb sandwich wall plate are guaranteed.
A second aspect of the present invention provides a method for forming a honeycomb sandwich panel having a foam structure at its trailing edge, comprising the steps of:
laying a honeycomb sandwich structure wall plate outer skin 6 on a mould panel 9 of a main body mould 1;
laying the honeycomb core 8 on the outer skin 6, and then laying the inner skin 7 of the honeycomb sandwich structure;
positioning the foam support bars 2 on the inner skin 7 through foam support bar positioning blocks 11, and turning over the inner skin 7 and paving the inner skin on the foam support bars 2;
positioning a tail edge foam core 5 on an outer skin 6 of the honeycomb sandwich structure wall plate through a foam limiting boss 10 and a foam supporting bar 2, and turning over the outer skin 6 and paving the outer skin on the tail edge foam core 5 and the foam supporting bar 2 to form a tail edge foam structure;
and respectively placing the foam area pressure equalizing cover plate 3 and the laminate area pressure equalizing cover plate 4 on a foam area and a laminate area of the tail edge foam structure, and packaging and then entering an autoclave for thermoforming.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, it is intended that all such modifications and alterations be included within the scope of this invention as defined in the appended claims.
Claims (7)
1. A honeycomb sandwich wall plate forming tool for a foam structure at a tail edge is characterized by comprising a main body mold (1), foam supporting bars (2), a foam area pressure equalizing cover plate (3) and a laminate area pressure equalizing cover plate (4), wherein the main body mold (1) comprises a mold panel (9); the upper molded surface of the main body mold (1) is consistent with the lower molded surface of the honeycomb sandwich wall plate with the foam structure at the tail edge; the honeycomb sandwich wall plate comprises an outer skin (6), an inner skin (7) of the honeycomb sandwich structure wall plate, a honeycomb core (8) and a foam core (5); the main body mould (1) is used for placing the honeycomb sandwich wallboard with a foam structure at the tail edge; the foam limiting boss (10) is arranged on the main body die, and the main body die (1) further comprises a foam support strip positioning block (11) which is positioned at the end of the foam core (5) in the length direction and used for positioning the foam support strip (2).
2. The honeycomb sandwich panel forming tool for the foam structure at the tail edge of claim 1, wherein: the side surface of the foam limiting boss (10) is consistent with the outer side molded surface of the foam structure carried by the honeycomb sandwich wall plate, and the positioning surface of the foam support bar positioning block (11) is consistent with the end surface of the foam core (5); the outer profile of the foam support bar (2) is consistent with the inner profile of the foam structure carried by the honeycomb wall plate, and the lower profile of the foam area pressure equalizing plate (3) is consistent with the upper profile of the foam structure; the lower molded surface of the laminated plate area uniform pressure cover plate (4) is consistent with the upper molded surface of the laminated plate area of the honeycomb sandwich wall plate above the foam support bars (2).
3. The honeycomb sandwich panel forming tool for a foam structure of a tail edge strip of claim 1, wherein: the length of the foam support bars (2) is greater than or equal to the length of the foam structure, the length of the foam area pressure equalizing cover plate (3) is consistent with the length of the foam structure, and the length of the laminate area pressure equalizing cover plate (4) is consistent with the length of the foam area pressure equalizing cover plate.
4. The honeycomb sandwich panel forming tool for the foam structure at the tail edge of claim 1, wherein: the main body die (1) is manufactured by Q235 steel numerical control machining, and a solid die or a large-opening frame die can be adopted.
5. The honeycomb sandwich panel forming tool for the foam structure at the tail edge of claim 1, wherein: the foam support bar (2) is manufactured by Q235 steel numerical control machining, can be manufactured in sections if the length is larger than 1 m, and is provided with a threaded hole on the end face of one side of the non-working molded surface for the demoulding process of the foam support bar.
6. The honeycomb sandwich panel forming tool for the foam structure at the tail edge of claim 1, wherein: the foam area pressure equalizing cover plate (3) and the laminate area pressure equalizing cover plate (4) are made of composite material laminates or aluminum plates with the thickness of 2 mm.
7. A method for forming a honeycomb sandwich panel with a foam structure at the tail edge is characterized by comprising the following steps:
laying a honeycomb sandwich structure wall plate outer skin (6) on a mould panel (9) of a main body mould (1);
laying the honeycomb core (8) on the outer skin (6), and then laying the inner skin (7) of the honeycomb sandwich structure;
the foam support bars (2) are positioned on the inner skin (7) through the foam support bar positioning blocks (11), and the inner skin (7) is turned over and laid on the foam support bars (2);
positioning a tail edge foam core (5) on an outer skin (6) of a honeycomb sandwich structure wall plate through a foam limiting boss (10) and a foam support bar (2), and turning over the outer skin (6) and paving the outer skin on the tail edge foam core (5) and the foam support bar (2) to form a tail edge foam structure;
and respectively placing a foam area uniform pressure cover plate (3) and a laminate area uniform pressure cover plate (4) on a foam area and a laminate area of the tail edge foam structure, and packaging and then entering an autoclave for thermoforming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110393205.0A CN113183493B (en) | 2021-04-13 | 2021-04-13 | Forming tool and forming method for honeycomb sandwich wall plate with foam structure at tail edge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110393205.0A CN113183493B (en) | 2021-04-13 | 2021-04-13 | Forming tool and forming method for honeycomb sandwich wall plate with foam structure at tail edge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113183493A CN113183493A (en) | 2021-07-30 |
| CN113183493B true CN113183493B (en) | 2022-10-21 |
Family
ID=76975558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110393205.0A Active CN113183493B (en) | 2021-04-13 | 2021-04-13 | Forming tool and forming method for honeycomb sandwich wall plate with foam structure at tail edge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113183493B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4344995A (en) * | 1980-09-15 | 1982-08-17 | The Boeing Company | Hybrid composite structures |
| US4657615A (en) * | 1984-08-20 | 1987-04-14 | The Boeing Company | Composite leading edge/spar member for an aircraft control surface |
| US7753313B1 (en) * | 2006-09-19 | 2010-07-13 | The Boeing Company | Composite wing slat for aircraft |
| GB2497578B (en) * | 2011-12-16 | 2015-01-14 | Vestas Wind Sys As | Wind turbine blades |
| CN110416723A (en) * | 2019-07-22 | 2019-11-05 | 中国航空工业集团公司济南特种结构研究所 | A kind of radome root structure of foam enhancing |
-
2021
- 2021-04-13 CN CN202110393205.0A patent/CN113183493B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113183493A (en) | 2021-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104029397A (en) | Preparation device of aircraft composite material fuselage wall panels and preparation method thereof | |
| CN102423910A (en) | Co-curing molding die for composite material with wallboard structure | |
| WO2012163690A1 (en) | Foam core for a composite laminated article, and manufacture thereof | |
| CN104999672A (en) | Molding method of double-curvature variable-section variable-thickness through beam | |
| CN112223804A (en) | Method for forming and preparing laminated composite material honeycomb | |
| CN202037880U (en) | Production device for carbon fiber reinforced composite material workpiece | |
| CN113183493B (en) | Forming tool and forming method for honeycomb sandwich wall plate with foam structure at tail edge | |
| CN108688192B (en) | C-shaped beam composite material forming tool and composite material C-shaped beam forming method | |
| CN102514249A (en) | Manufacturing method for sandwich material with honeycomb composite foam structure for wind power | |
| CN214395506U (en) | Forming die for I-shaped parts made of composite materials | |
| CN212709253U (en) | Lightweight automotive interior board | |
| CN108202388B (en) | Parameter-adjustable die capable of being used for producing inner and outer wallboards and application thereof | |
| CN114801251A (en) | Integrated forming method for general aircraft carbon fiber prepreg corrugated wall plate | |
| CN211543866U (en) | Composite material partition frame structure for aircraft wing trailing edge | |
| CN210758686U (en) | Composite material mould frock for helicopter tail boom | |
| CN203651090U (en) | Circular-arc stone cellular board with ultrathin bush hammered face | |
| CN208978073U (en) | It is a kind of for manufacturing the master mold of composite material mould | |
| CN201411040Y (en) | Complicated wing type full height foam sandwiched sub-wing structure | |
| CN207629374U (en) | The reinforcing welding structure of corrugated sheet | |
| CN102357950B (en) | Forming die for large-size composite transverse H-shaped reinforcing ribs | |
| CN220700444U (en) | Equalizing plate suitable for male die molding of V-shaped composite material workpiece | |
| CN110667821B (en) | Aircraft wing trailing edge composite material bulkhead structure and manufacturing method thereof | |
| CN214645732U (en) | Continuous hexagonal honeycomb core plate and machine head mold core thereof | |
| CN218751450U (en) | Mould is spread to structural framework in cabin | |
| CN218643841U (en) | Novel building engineering template |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |