CN114179396A - Forming method and die suitable for irregular U-shaped composite material foam sandwich structural member - Google Patents
Forming method and die suitable for irregular U-shaped composite material foam sandwich structural member Download PDFInfo
- Publication number
- CN114179396A CN114179396A CN202111546556.7A CN202111546556A CN114179396A CN 114179396 A CN114179396 A CN 114179396A CN 202111546556 A CN202111546556 A CN 202111546556A CN 114179396 A CN114179396 A CN 114179396A
- Authority
- CN
- China
- Prior art keywords
- paving
- outer skin
- forming
- die
- skin
- 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.)
- Granted
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
- B29C70/04—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
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
-
- 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
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3097—Cosmonautical vehicles; Rockets
-
- 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 invention discloses a forming method and a die suitable for an irregular U-shaped composite material foam sandwich structural member, which comprises the following steps: s1, manufacturing a mould, S2 manufacturing a foam core, S3 paving and pasting the outer skin on the outer skin paving and pasting mould, and conveying the outer skin into an autoclave for curing and forming to obtain a cured outer skin assembly; s4, paving the inner skin on the inner skin paving mould and paving the foam core to obtain an uncured inner skin assembly; s5, assembling the cured outer skin assembly and the uncured inner skin assembly by using an assembly forming die to obtain an assembled body; s6, conveying the assembled forming body into an autoclave for curing and forming to obtain the foam sandwich structural member. The invention adopts the co-bonding process and the forming die used in a matching way, so that the operation difficulty of the parts in the manufacturing process can be effectively reduced, the internal quality of part bonding, the accuracy of the position of the foam core and the surface quality can be ensured, and the qualification rate and the production efficiency of the parts can be improved.
Description
Technical Field
The invention relates to the field of composite material foam sandwich structural member cementing, in particular to a forming method and a die suitable for an irregular U-shaped composite material foam sandwich structural member.
Background
The composite material foam sandwich structural member has the characteristics of light weight, high bearing capacity and the like, so the composite material foam sandwich structural member is widely applied to the field of aerospace, and particularly, a large-scale composite material member for aviation also has a foam sandwich structure. A certain composite material part is an irregular U-shaped foam sandwich structural member as shown in figure 1, the composite material foam sandwich structural member consists of an inner composite material skin, an outer composite material skin and a foam core, and the part is a U-shaped structural member with gradually reduced height in the length direction, reduced opening size and unequal two sides. In addition, the outer surface of the part is an aerodynamic profile, and the surface is required to be smooth and smooth.
Aiming at the structural members, the traditional method adopts a co-curing process, namely, the curing of the carbon fiber composite panel and the gluing of the core material and the panel of the sandwich structure are finished at one time, and the method has the advantages that the problems of looseness and poor gluing of the outer skin 100 of the part caused by the fact that the height of the part is large (namely, the inner cavity of the part is deep) in the forming process are solved; in addition, the curvature of the part is large, the inner cavity is narrow, and if a female die forming method with a single structure is adopted, the process operation difficulty is large, and the part is not easy to be taken out of the die after being formed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a forming method and a die suitable for an irregular U-shaped composite material foam sandwich structural member.
The technical scheme of the invention is as follows:
a forming method suitable for an irregular U-shaped composite material foam sandwich structural member comprises the following steps:
s1, manufacturing a die: manufacturing an outer skin paving and pasting mold, an inner skin paving and pasting mold and an assembling and forming mold;
s2, manufacturing a foam core: machining the PMI foam blank into a foam core by adopting numerical control machining according to a part digital model;
s3, paving and pasting the outer skin on the outer skin paving and pasting die, taking down the paved outer skin, installing the outer skin in an assembly forming die, and sending the assembly forming die and the outer skin into a hot pressing tank for curing and forming to obtain a cured outer skin assembly;
s4, paving the inner skin on the inner skin paving mould and paving the foam core to obtain an uncured inner skin assembly;
s5, assembling the cured outer skin assembly and the uncured inner skin assembly by using an assembly forming die to obtain an assembled body;
and S6, conveying the assembled forming body into an autoclave for curing and forming to obtain the foam sandwich structural member.
Preferably, S3 specifically includes the following operations:
1) paving an outer skin blank on an outer skin mould body of an outer skin paving mould by using carbon fiber prepreg, and vacuumizing and pre-compacting each time 1-4 layers of prepreg are paved;
2) forming a positioning hole in the outer skin blank by using a first drilling template, and then taking down the positioning hole and placing the positioning hole into an assembly forming die;
3) accurately positioning the outer skin according to the coincidence of the outer skin blank and the positioning hole on the assembly forming die;
4) laying auxiliary materials on the surface of the outer skin for assembly and air tightness, wherein the vacuum degree is not lower than-0.095 MPa.
Preferably, the outer skin is vacuumized and precompacted according to the following parameters: the vacuum degree is not lower than-0.07 MPa, the vacuum pressure is kept for more than 10-20 min, and the curing parameters are as follows: when the temperature is raised to 175-185 ℃, the pressure is 0.60-0.65 MPa, and the temperature and pressure are kept for 120-135 min.
Preferably, S4 specifically includes the following operations:
1) paving an inner skin blank body on the inner skin mould body by using carbon fiber prepreg, and vacuumizing and pre-compacting every time 1-4 layers of prepreg are paved;
2) forming a positioning hole in the inner skin blank by using a second drilling template;
3) paving a high-temperature adhesive film on the surface of the inner skin blank, paving a foam core according to a sunken position shown on the surface of the inner skin blank so as to ensure the position accuracy of the foam core in the part manufacturing process, paving a high-temperature adhesive film on the other surface of the foam core, properly heating the adhesive film by an electric iron in the adhesive film paving process, and primarily positioning the foam core by using the viscosity of the adhesive film;
4) and (4) paving the foam core by vacuumizing and pre-compacting.
Preferably, the parameters of vacuumizing and pre-compacting the inner skin are as follows: the vacuum degree is not lower than-0.07 MPa, and the vacuum pressure is kept for more than 10-20 min.
Preferably, in S5, auxiliary materials are paved on the surface of the inner skin to carry out assembly air tightness, and the vacuum degree is not lower than-0.095 MPa.
Preferably, the curing parameters in S6: when the temperature is raised to 175-185 ℃, the pressure is 0.60-0.65 MPa, and the temperature and pressure are kept for 120-135 min.
A forming die for an irregular U-shaped composite material foam sandwich structural member comprises an outer skin paving die, an inner skin paving die and an assembling and forming die,
the outer skin paving and pasting mold comprises an outer skin mold body, a first drill plate and a first bottom plate, wherein the size of the outer profile of the outer skin mold body is determined according to the size of the inner profile of the outer skin, the outer skin mold body is connected with the first bottom plate in a welding mode, and the first drill plate is arranged on the outer skin mold body;
the inner skin paving and pasting mold comprises an inner skin mold body, a second drill plate and a second bottom plate, the size of the outer profile of the inner skin mold body is determined according to the size of the outer profile of the inner skin, the inner skin mold body is connected with the second bottom plate in a welding mode, and the second drill plate is arranged on the inner skin mold body;
the assembling and forming die comprises a forming die body and a third drill plate, the forming die body comprises a left half die body and a right half die body, the third drill plate is arranged on the left half die body, and the right half die body is detachably arranged on the left half die body through angle steel.
Preferably, the width of the left half-mold body is greater than that of the right half-mold body, the length of the left half-mold body is greater than that of the right half-mold body, and an opening is formed between two ends of the left half-mold body and two ends of the mating surface of the right half-mold body.
Preferably, the widths of the mating surfaces of the left half die body and the right half die body in the vertical direction of the working molded surface area are at least 50mm, the gap between the mating surfaces is 0.3mm, and the two ends and the length direction of the left half die body are respectively provided with angle steel; a gap of 0.5mm is formed between the inner side surface of the angle steel and the right half-die body, and the angle steel is connected with the left half-die body through a bolt; the positioning holes made on the first drilling template, the second drilling template and the third drilling template are overlapped.
According to the structural member, three sets of dies are required to be customized to be matched for use according to the structural characteristics of the part and the operability of the manufacturing process, wherein two sets of dies are male dies and are mainly used for paving and pasting the inner skin and the outer skin of the part; one set is the bed die utensil, mainly used outer skin shaping and interior, the equipment of outer skin and inside foam core splices the shaping, but three sets of moulds all adopt same benchmark to set up the positioner who makes the hole, guarantee the accuracy in interior, the outer skin assembling process, adopt joint process altogether and can effectively reduce this type of part and operate the degree of difficulty in manufacturing process through supporting forming die who uses, can guarantee that the part splices the internal quality, the accuracy and the surface quality of foam core position, can promote part qualification rate and production efficiency again.
Drawings
FIG. 1 is a schematic structural view of an irregular U-shaped foam sandwich structure;
FIG. 2 is a schematic structural view of an outer skin lay-up mold according to a preferred embodiment of the present invention;
FIG. 3 is a schematic structural view of an inner skin lay-up mold according to a preferred embodiment of the invention;
FIG. 4 is a schematic structural view of an assembly mold according to a preferred embodiment of the present invention;
FIG. 5 is a sectional view of the assembled mold in the preferred embodiment of the present invention;
in the figure: the outer skin paving and pasting mold comprises an outer skin paving and pasting mold 1, an inner skin paving and pasting mold 2, an assembling and forming mold 3, an outer skin mold body 11, a first drill plate 12, a first bottom plate 13, an inner skin mold body 21, a second drill plate 22, a second bottom plate 23, a left half mold body 31, a right half mold body 32, angle steel 33, a third drill plate 34, a plug pin 35, a relief opening 36, an outer skin 100, an inner skin 200 and a foam core 300.
Detailed Description
The present invention will be further described with reference to the following examples, however, the scope of the present invention is not limited to the following examples.
Example 1: as shown in figures 2-4, the forming die for the irregular U-shaped composite material foam sandwich structural member comprises an outer skin paving die 1, an inner skin paving die 2 and an assembly forming die 3,
the method comprises the following steps that (1) an outer skin paving and pasting mold 1 is adopted, steel with proper specifications is selected, the molded surface of an outer skin mold body 11 is milled according to the reduction of 0.2mm of the inner molded surface of the outer skin 100 of the foam sandwich structural member, the outer skin mold body 11 is connected with a first bottom plate 13 in a welding mode, a first drilling template 12 is arranged at the diagonal position of the outer skin mold body 11 outside the edge line of a part, and the drilling template is used for manufacturing a positioning hole;
the inner skin paving and pasting die 2 is characterized in that steel with a proper specification is selected, the profile of an inner skin die body 21 is milled according to the reduction of 0.2mm of the outer profile of the inner skin 200 of the foam sandwich structural member, the inner skin die body 21 is connected with a second bottom plate 23 in a welding mode, a second drilling template plate 22 is arranged at the diagonal position of the inner skin die body 21 outside the edge line of the part and used for manufacturing a positioning hole, and the positioning hole manufactured by the first drilling template plate 12 keep the same reference;
selecting steel with proper specification, milling a molded surface of a forming die body according to the outer surface 100 of the outer skin of the foam sandwich structural member, wherein the forming die body is divided into a left half die body 31 and a right half die body 32, wherein: the widths of the involution surfaces of the left half mold body 31 and the right half mold body 32 in the vertical direction of the working molded surface area are at least 50mm, and an opening 36 is arranged between the two ends of the involution surface of the two mold bodies, so that the problem that the left half mold body 31 and the right half mold body 32 cannot be accurately involuted due to glue accumulation after the mold is used for a long time can be effectively avoided. The gap between the other mating surfaces in the vertical direction is 0.3mm, wherein the left half-die body 31 needs to be provided with a limiting L-shaped angle steel 33 on the right half-die body 32, so that the matching problem caused by inaccurate die processing can be effectively solved, at least three positions are arranged in the length direction, at least one position is respectively arranged at two ends, a 0.5mm gap is arranged between one side of the angle steel 33 and the right half-die body 32, and the angle steel 33 is connected with the left half-die body 31 by a bolt 35; and a third drilling template 34 is arranged at the diagonal position of the mould outside the edge line of the part and is used for manufacturing a positioning hole, the same datum is kept with the positioning holes manufactured by the first drilling template 12 and the second drilling template 22, and the positioning hole is used for assembling and positioning the inner skin and the outer skin in the foam sandwich structural member assembling and forming mould 3.
A forming method suitable for an irregular U-shaped composite material foam sandwich structural member comprises the following specific operation steps:
s1, manufacturing a die: manufacturing an outer skin paving and pasting mold 1, an inner skin paving and pasting mold 2 and an assembling and forming mold 3;
s2, machining the PMI foam blank into a foam core 300 for later use by adopting a numerical control machining method according to a part digital model, wherein the foam core 300 can be divided into two blocks at most;
s3, paving an outer skin blank on the outer skin die body 11 by using carbon fiber prepreg, vacuumizing and pre-compacting 1-4 layers of prepreg when paving, forming a positioning hole on the blank by using the first drilling template 12, taking the blank down and placing the blank into an assembly forming die 3, accurately positioning the outer skin 100 according to the coincidence of the outer skin blank and the positioning hole on the assembly forming die 3, paving auxiliary materials on the surface of the outer skin 100 for assembly and air tightness, wherein the vacuum degree is not lower than-0.095 MPa, and finally sending the die into a hot pressing tank for curing and forming to obtain a cured outer skin assembly, wherein the vacuumizing and pre-compacting parameters are as follows: the vacuum degree is not lower than-0.07 MPa, the vacuum pressure is kept for more than 10-20 min, and the curing parameters are as follows: when the temperature is raised to 175-185 ℃, the pressure is 0.60-0.65 MPa, and the temperature and pressure are kept for 120-135 min;
s4, paving an inner skin blank on the inner skin mold body 21 by using carbon fiber prepreg, vacuumizing and pre-compacting each time 1-4 layers of prepreg are paved, forming a positioning hole, paving a high-temperature adhesive film on the surface of the blank, paving the foam core 300 according to the sunken position shown on the surface of the inner skin blank to ensure the position accuracy of the foam core 300 in the part manufacturing process, paving the high-temperature adhesive film on the other surface of the foam core 300, properly heating the adhesive film by an electric iron in the adhesive film paving process, initially positioning the foam core 300 by using the viscosity of the adhesive film, and finally completing the assembly of the inner skin 200 and the foam core 300 by vacuumizing and pre-compacting to obtain an uncured inner skin assembly, wherein the vacuumizing and pre-compacting parameters are as follows: the vacuum degree is not lower than-0.07 MPa, and the vacuum pressure is kept for more than 10-20 min;
s5, placing the uncured inner skin assembly into an assembly forming die 3, accurately positioning the inner skin 200 and the foam core according to the coincidence of the blank and positioning holes on the assembly forming die 3, assembling the inner skin 200 and the foam core with the cured outer skin 100 to obtain an assembled body, and paving an auxiliary material on the surface of the inner skin 200 for assembly and air tightness, wherein the vacuum degree is not lower than-0.095 MPa;
s6, finally, sending the die into an autoclave for glue joint, curing and molding, wherein the curing parameters are as follows: and when the temperature is raised to 175-185 ℃, the pressure is 0.60-0.65 MPa, and the temperature and pressure are kept for 120-135 min to obtain the foam sandwich structural member. In order to improve the internal gluing quality of the gluing areas of the inner skin and the outer skin of the part and the surface quality of the inner skin 200, a pressure equalizing plate made of rubber and glass fiber reinforced plastic can be placed outside the auxiliary material on the surface of the gluing area at the periphery of the assembled inner skin blank.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A forming method suitable for an irregular U-shaped composite material foam sandwich structural member is characterized by comprising the following steps:
s1, manufacturing a die: manufacturing an outer skin paving and pasting mold, an inner skin paving and pasting mold and an assembling and forming mold;
s2, manufacturing a foam core: machining the PMI foam blank into a foam core by adopting numerical control machining according to a part digital model;
s3, paving and pasting the outer skin on the outer skin paving and pasting die, taking down the paved outer skin, installing the outer skin in an assembly forming die, and sending the assembly forming die and the outer skin into a hot pressing tank for curing and forming to obtain a cured outer skin assembly;
s4, paving the inner skin on the inner skin paving mould and paving the foam core to obtain an uncured inner skin assembly;
s5, assembling the cured outer skin assembly and the uncured inner skin assembly by using an assembly forming die to obtain an assembled body;
and S6, conveying the assembled forming body into an autoclave for curing and forming to obtain the foam sandwich structural member.
2. The method as claimed in claim 1, wherein the step S3 comprises the following steps:
1) paving an outer skin blank on an outer skin mould body of an outer skin paving mould by using carbon fiber prepreg, and vacuumizing and pre-compacting each time 1-4 layers of prepreg are paved;
2) forming a positioning hole in the outer skin blank by using a first drilling template, and then taking down the positioning hole and placing the positioning hole into an assembly forming die;
3) accurately positioning the outer skin according to the coincidence of the outer skin blank and the positioning hole on the assembly forming die;
4) laying auxiliary materials on the surface of the outer skin for assembly and air tightness, wherein the vacuum degree is not lower than-0.095 MPa.
3. The forming method suitable for the irregular U-shaped composite material foam sandwich structural member as claimed in claim 2, wherein the outer skin is vacuumized and pre-compacted according to the following parameters: the vacuum degree is not lower than-0.07 MPa, the vacuum pressure is kept for more than 10-20 min, and the curing parameters are as follows: when the temperature is raised to 175-185 ℃, the pressure is 0.60-0.65 MPa, and the temperature and pressure are kept for 120-135 min.
4. The method as claimed in claim 1, wherein the step S4 comprises the following steps:
1) paving an inner skin blank body on the inner skin mould body by using carbon fiber prepreg, and vacuumizing and pre-compacting every time 1-4 layers of prepreg are paved;
2) forming a positioning hole in the inner skin blank by using a second drilling template;
3) paving a high-temperature adhesive film on the surface of the inner skin blank, paving a foam core according to a sunken position shown on the surface of the inner skin blank so as to ensure the position accuracy of the foam core in the part manufacturing process, paving a high-temperature adhesive film on the other surface of the foam core, properly heating the adhesive film by an electric iron in the adhesive film paving process, and primarily positioning the foam core by using the viscosity of the adhesive film;
4) and (4) paving the foam core by vacuumizing and pre-compacting.
5. The forming method suitable for the irregular U-shaped composite material foam sandwich structural member as claimed in claim 4, wherein the inner skin is vacuumized and pre-compacted according to the following parameters: the vacuum degree is not lower than-0.07 MPa, and the vacuum pressure is kept for more than 10-20 min.
6. The method as claimed in claim 1, wherein in step S5, auxiliary materials are laid on the surface of the inner skin to make the assembly airtight, and the vacuum degree is not lower than-0.095 MPa.
7. The method as claimed in claim 1, wherein the curing parameters in S6 are as follows: when the temperature is raised to 175-185 ℃, the pressure is 0.60-0.65 MPa, and the temperature and pressure are kept for 120-135 min.
8. A forming die for an irregular U-shaped composite material foam sandwich structure member, which is used in the forming method of the irregular U-shaped composite material foam sandwich structure member as claimed in any one of claims 1 to 7, and is characterized by comprising an outer skin paving die, an inner skin paving die and an assembly forming die,
the outer skin paving and pasting mold comprises an outer skin mold body, a first drill plate and a first bottom plate, wherein the size of the outer profile of the outer skin mold body is determined according to the size of the inner profile of the outer skin, the outer skin mold body is connected with the first bottom plate in a welding mode, and the first drill plate is arranged on the outer skin mold body;
the inner skin paving and pasting mold comprises an inner skin mold body, a second drill plate and a second bottom plate, the size of the outer profile of the inner skin mold body is determined according to the size of the outer profile of the inner skin, the inner skin mold body is connected with the second bottom plate in a welding mode, and the second drill plate is arranged on the inner skin mold body;
the assembling and forming die comprises a forming die body and a third drill plate, the forming die body comprises a left half die body and a right half die body, the third drill plate is arranged on the left half die body, and the right half die body is detachably arranged on the left half die body through angle steel.
9. The mold for forming the irregular U-shaped composite material foam sandwich structure member as claimed in claim 8, wherein the width of the left half mold body is greater than the width of the right half mold body, the length of the left half mold body is greater than the length of the right half mold body, and a clearance opening is provided between two ends of the left half mold body and two ends of the mating surface of the right half mold body.
10. The forming mold for the irregular U-shaped composite material foam sandwich structural member as claimed in claim 8 or 9, wherein the width of the mating surface of the left half mold body and the right half mold body in the vertical direction of the working profile area is at least 50mm, the gap of the mating surface is 0.3mm, and the left half mold body is provided with angle steel at both ends and in the length direction; a gap of 0.5mm is formed between the inner side surface of the angle steel and the right half-die body, and the angle steel is connected with the left half-die body through a bolt; the positioning holes made on the first drilling template, the second drilling template and the third drilling template are overlapped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111546556.7A CN114179396B (en) | 2021-12-17 | 2021-12-17 | Forming method and die suitable for irregular U-shaped composite material foam sandwich structural member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111546556.7A CN114179396B (en) | 2021-12-17 | 2021-12-17 | Forming method and die suitable for irregular U-shaped composite material foam sandwich structural member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114179396A true CN114179396A (en) | 2022-03-15 |
| CN114179396B CN114179396B (en) | 2023-07-18 |
Family
ID=80605453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111546556.7A Active CN114179396B (en) | 2021-12-17 | 2021-12-17 | Forming method and die suitable for irregular U-shaped composite material foam sandwich structural member |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114179396B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116394545A (en) * | 2023-06-09 | 2023-07-07 | 成都泰格尔航天航空科技股份有限公司 | Leading edge skin forming method and leading edge skin |
Citations (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1501085A (en) * | 1974-02-07 | 1978-02-15 | Unitex Ltd | Foam sandwich constructions |
| US5152856A (en) * | 1988-07-21 | 1992-10-06 | Northrop Corporation | Cure/bonding method for sandwiched plastic structure |
| JPH07214708A (en) * | 1994-02-07 | 1995-08-15 | Fuji Heavy Ind Ltd | Manufacture of honeycomb sandwich structure and molding device |
| JP2010082842A (en) * | 2008-09-29 | 2010-04-15 | Tokai Chem Ind Ltd | Method for manufacturing foam molded article and foam molded article |
| US20110168324A1 (en) * | 2008-03-12 | 2011-07-14 | Airbus Operations Gmbh | Method for producing an integral fiber composite part |
| US20110212317A1 (en) * | 2010-03-01 | 2011-09-01 | TrimaBond LLC | Apparatus and method for recycling scrap, including automotive interior trim scrap |
| CN104275804A (en) * | 2014-05-27 | 2015-01-14 | 航天材料及工艺研究所 | Preparation method of large-size thin-wall foam sandwich structure and application of structure |
| CN104358708A (en) * | 2014-08-19 | 2015-02-18 | 航天材料及工艺研究所 | Carbon fiber composite foam core sandwich structure wind tunnel fan blade and molding method |
| US20150064389A1 (en) * | 2013-08-28 | 2015-03-05 | Airbus Operations Gmbh | Window panel for an airframe and method of producing same |
| CN104767035A (en) * | 2015-04-20 | 2015-07-08 | 中国电子科技集团公司第五十四研究所 | High-precision carbon fiber auxiliary reflection face forming method |
| JP2016107628A (en) * | 2014-11-28 | 2016-06-20 | 三菱電機株式会社 | Method for manufacturing sandwich structure having curved surface |
| CN105922703A (en) * | 2016-04-21 | 2016-09-07 | 中国人民解放军国防科学技术大学 | Preparation method for composite material antenna cover with thin-wall foam sandwich structure |
| FR3034705A1 (en) * | 2015-04-08 | 2016-10-14 | Ea Technique | PROCESS FOR PRODUCING SANDWICH PANELS AND CORRESPONDING PANELS |
| CN106608056A (en) * | 2016-11-21 | 2017-05-03 | 湖北三江航天红阳机电有限公司 | Method for molding phenolic panel honeycomb sandwich structural member |
| CN106671557A (en) * | 2016-12-14 | 2017-05-17 | 中航飞机股份有限公司西安飞机分公司 | Molding method of aramid fiber composite material frequency selection surface reflector |
| US20180036922A1 (en) * | 2016-08-04 | 2018-02-08 | The Boeing Company | In-mold apparatus and method for decorative application |
| CN108045002A (en) * | 2018-01-02 | 2018-05-18 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of honeycomb sandwich construction and preparation method thereof |
| CN208664159U (en) * | 2018-07-06 | 2019-03-29 | 江西洪都航空工业集团有限责任公司 | Skins front edges composite material shaping mould on the outside of a kind of aircraft |
| CN109687160A (en) * | 2018-12-29 | 2019-04-26 | 中国电子科技集团公司第二十研究所 | A kind of monoblock type high-precision carbon fiber composite antenna reflector and its manufacturing method |
| CN110481059A (en) * | 2019-09-24 | 2019-11-22 | 航天特种材料及工艺技术研究所 | A kind of composite material foam sandwich construction and its forming method |
| CN110815875A (en) * | 2019-11-28 | 2020-02-21 | 航天海鹰(镇江)特种材料有限公司 | Forming method of composite material honeycomb sandwich structure part |
| CN111267413A (en) * | 2019-12-31 | 2020-06-12 | 中电科芜湖钻石飞机制造有限公司 | Composite material intelligent skin and manufacturing method thereof |
| CN111470068A (en) * | 2020-03-18 | 2020-07-31 | 北京电子工程总体研究所 | Grille cover body structure for aircraft and manufacturing method thereof |
| CN111769361A (en) * | 2020-08-05 | 2020-10-13 | 上海无线电设备研究所 | Precise preparation method of high-temperature-resistant foam A interlayer composite material radome |
| CN111958886A (en) * | 2020-07-15 | 2020-11-20 | 天津爱思达航天科技有限公司 | Universal carbon foam composite material die with high yield and preparation method thereof |
| CN112026205A (en) * | 2020-08-20 | 2020-12-04 | 四川一诺高分子材料科技有限公司 | Manufacturing method of common radar antenna housing |
| CN112606304A (en) * | 2020-11-27 | 2021-04-06 | 哈尔滨哈玻拓普复合材料有限公司 | Manufacturing and mounting method of curved surface projection screen capable of being rapidly disassembled and assembled |
| CN112848562A (en) * | 2020-12-22 | 2021-05-28 | 北京航天和兴科技有限公司 | Sandwich type composite material panel and forming process thereof |
| CN113103628A (en) * | 2021-06-16 | 2021-07-13 | 宁波曙翔新材料股份有限公司 | Edge sealing method for aluminum honeycomb in low-temperature forming composite material sandwich structure antenna back plate |
| US20210362441A1 (en) * | 2018-06-28 | 2021-11-25 | Mitsubishi Heavy Industries, Ltd. | Method for molding composite material structure |
| CN113733595A (en) * | 2021-08-30 | 2021-12-03 | 北京航空航天大学 | Processing method of fully-wrapped composite material foam sandwich wing rib |
-
2021
- 2021-12-17 CN CN202111546556.7A patent/CN114179396B/en active Active
Patent Citations (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1501085A (en) * | 1974-02-07 | 1978-02-15 | Unitex Ltd | Foam sandwich constructions |
| US5152856A (en) * | 1988-07-21 | 1992-10-06 | Northrop Corporation | Cure/bonding method for sandwiched plastic structure |
| JPH07214708A (en) * | 1994-02-07 | 1995-08-15 | Fuji Heavy Ind Ltd | Manufacture of honeycomb sandwich structure and molding device |
| US20110168324A1 (en) * | 2008-03-12 | 2011-07-14 | Airbus Operations Gmbh | Method for producing an integral fiber composite part |
| JP2010082842A (en) * | 2008-09-29 | 2010-04-15 | Tokai Chem Ind Ltd | Method for manufacturing foam molded article and foam molded article |
| US20110212317A1 (en) * | 2010-03-01 | 2011-09-01 | TrimaBond LLC | Apparatus and method for recycling scrap, including automotive interior trim scrap |
| US20150064389A1 (en) * | 2013-08-28 | 2015-03-05 | Airbus Operations Gmbh | Window panel for an airframe and method of producing same |
| CN104275804A (en) * | 2014-05-27 | 2015-01-14 | 航天材料及工艺研究所 | Preparation method of large-size thin-wall foam sandwich structure and application of structure |
| CN104358708A (en) * | 2014-08-19 | 2015-02-18 | 航天材料及工艺研究所 | Carbon fiber composite foam core sandwich structure wind tunnel fan blade and molding method |
| JP2016107628A (en) * | 2014-11-28 | 2016-06-20 | 三菱電機株式会社 | Method for manufacturing sandwich structure having curved surface |
| FR3034705A1 (en) * | 2015-04-08 | 2016-10-14 | Ea Technique | PROCESS FOR PRODUCING SANDWICH PANELS AND CORRESPONDING PANELS |
| CN104767035A (en) * | 2015-04-20 | 2015-07-08 | 中国电子科技集团公司第五十四研究所 | High-precision carbon fiber auxiliary reflection face forming method |
| CN105922703A (en) * | 2016-04-21 | 2016-09-07 | 中国人民解放军国防科学技术大学 | Preparation method for composite material antenna cover with thin-wall foam sandwich structure |
| US20180036922A1 (en) * | 2016-08-04 | 2018-02-08 | The Boeing Company | In-mold apparatus and method for decorative application |
| CN106608056A (en) * | 2016-11-21 | 2017-05-03 | 湖北三江航天红阳机电有限公司 | Method for molding phenolic panel honeycomb sandwich structural member |
| CN106671557A (en) * | 2016-12-14 | 2017-05-17 | 中航飞机股份有限公司西安飞机分公司 | Molding method of aramid fiber composite material frequency selection surface reflector |
| CN108045002A (en) * | 2018-01-02 | 2018-05-18 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of honeycomb sandwich construction and preparation method thereof |
| US20210362441A1 (en) * | 2018-06-28 | 2021-11-25 | Mitsubishi Heavy Industries, Ltd. | Method for molding composite material structure |
| CN208664159U (en) * | 2018-07-06 | 2019-03-29 | 江西洪都航空工业集团有限责任公司 | Skins front edges composite material shaping mould on the outside of a kind of aircraft |
| CN109687160A (en) * | 2018-12-29 | 2019-04-26 | 中国电子科技集团公司第二十研究所 | A kind of monoblock type high-precision carbon fiber composite antenna reflector and its manufacturing method |
| CN110481059A (en) * | 2019-09-24 | 2019-11-22 | 航天特种材料及工艺技术研究所 | A kind of composite material foam sandwich construction and its forming method |
| CN110815875A (en) * | 2019-11-28 | 2020-02-21 | 航天海鹰(镇江)特种材料有限公司 | Forming method of composite material honeycomb sandwich structure part |
| CN111267413A (en) * | 2019-12-31 | 2020-06-12 | 中电科芜湖钻石飞机制造有限公司 | Composite material intelligent skin and manufacturing method thereof |
| CN111470068A (en) * | 2020-03-18 | 2020-07-31 | 北京电子工程总体研究所 | Grille cover body structure for aircraft and manufacturing method thereof |
| CN111958886A (en) * | 2020-07-15 | 2020-11-20 | 天津爱思达航天科技有限公司 | Universal carbon foam composite material die with high yield and preparation method thereof |
| CN111769361A (en) * | 2020-08-05 | 2020-10-13 | 上海无线电设备研究所 | Precise preparation method of high-temperature-resistant foam A interlayer composite material radome |
| CN112026205A (en) * | 2020-08-20 | 2020-12-04 | 四川一诺高分子材料科技有限公司 | Manufacturing method of common radar antenna housing |
| CN112606304A (en) * | 2020-11-27 | 2021-04-06 | 哈尔滨哈玻拓普复合材料有限公司 | Manufacturing and mounting method of curved surface projection screen capable of being rapidly disassembled and assembled |
| CN112848562A (en) * | 2020-12-22 | 2021-05-28 | 北京航天和兴科技有限公司 | Sandwich type composite material panel and forming process thereof |
| CN113103628A (en) * | 2021-06-16 | 2021-07-13 | 宁波曙翔新材料股份有限公司 | Edge sealing method for aluminum honeycomb in low-temperature forming composite material sandwich structure antenna back plate |
| CN113733595A (en) * | 2021-08-30 | 2021-12-03 | 北京航空航天大学 | Processing method of fully-wrapped composite material foam sandwich wing rib |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116394545A (en) * | 2023-06-09 | 2023-07-07 | 成都泰格尔航天航空科技股份有限公司 | Leading edge skin forming method and leading edge skin |
| CN116394545B (en) * | 2023-06-09 | 2023-08-04 | 成都泰格尔航天航空科技股份有限公司 | Leading edge skin forming method and leading edge skin |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114179396B (en) | 2023-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108943769B (en) | Manufacturing method of non-equal-diameter closed square tubular carbon fiber beam structural part of unmanned aerial vehicle | |
| CN104029397B (en) | The preparation facilities of a kind of technique for aircraft composite fuselage wallboard and preparation method | |
| CN112454938A (en) | Forming method of carbon fiber honeycomb sandwich composite material member | |
| CN111251624B (en) | Method for forming air bag of composite material oil tank shell of small unmanned aerial vehicle | |
| CN101804684A (en) | In-mould decorating injection moulding method and mould | |
| CN110103487B (en) | Process method for forming composite material part with Z-shaped section | |
| CN107139514B (en) | A kind of manufacturing method of air bag aided composite Material Stiffened Panel | |
| CN104786491A (en) | Internal supercharging method for composite material multi-rib siding structure cementing forming technology | |
| CN105538746A (en) | Mould and method for forming partial special-shape surface of large composite material workpiece in autoclave | |
| CN105150557A (en) | Method for manufacturing self-made auxiliary tooling for forming of large-curvature heteromorphic C-shaped frame type part | |
| CN110341212A (en) | The compression molding die of thermoplastic composite component with I-shaped reinforcing rib | |
| CN112406135A (en) | Method for assisting forming of composite propeller blade by air bag blowing | |
| CN114179396A (en) | Forming method and die suitable for irregular U-shaped composite material foam sandwich structural member | |
| CN111391362A (en) | Thermal expansion and pressure forming method for flat tail silicone rubber of unmanned aerial vehicle composite material | |
| CN110341210A (en) | The compression-moulding methods of thermoplastic composite component with I-shaped reinforcing rib | |
| CN110341209A (en) | A kind of compression-moulding methods of thermoplastic composite work shape reinforcement component | |
| CN108608606B (en) | Die for manufacturing U-shaped composite material integrated reinforced part | |
| CN109291466B (en) | Forming method of large-chamfer honeycomb sandwich structural member | |
| CN108749025B (en) | Method for manufacturing U-shaped composite material integrated reinforced component | |
| CN112936909A (en) | Forming process of thickened V-shaped composite material part at bottom of trainer | |
| CN113977984A (en) | Preparation method of tubular double-curved-surface composite material structural member | |
| CN213082434U (en) | Oversleeve shaping frock | |
| CN107953573B (en) | Preparation method and mold of glass fiber three-way pipeline | |
| CN113478866A (en) | Method for manufacturing omega-shaped stringer preformed body | |
| CN113510948B (en) | Manufacturing method of J-shaped composite material reinforcing rib |
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 |