CN110014664A - A kind of forming method of deep camber type face PMI cystosepiment - Google Patents
A kind of forming method of deep camber type face PMI cystosepiment Download PDFInfo
- Publication number
- CN110014664A CN110014664A CN201910268437.6A CN201910268437A CN110014664A CN 110014664 A CN110014664 A CN 110014664A CN 201910268437 A CN201910268437 A CN 201910268437A CN 110014664 A CN110014664 A CN 110014664A
- Authority
- CN
- China
- Prior art keywords
- type face
- forming
- pmi
- cystosepiment
- deep camber
- 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.)
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
- B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/022—Mechanical pre-treatments, e.g. reshaping
- B29C66/0222—Mechanical pre-treatments, e.g. reshaping without removal of material, e.g. cleaning by air blowing or using brushes
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/022—Mechanical pre-treatments, e.g. reshaping
- B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material
- B29C66/02241—Cutting, e.g. by using waterjets, or sawing
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention discloses a kind of forming methods of deep camber type face PMI cystosepiment.By certain thickness PMI cystosepiment, the piecemeal on deep camber forming frock forms this method, is then spliced to form entire type face, quick and saving raw material.The type face that this method is suitable for all kinds of equal thickness PMI cystosepiments forms.Waste of material of the milling with curvature foam type face can greatly be reduced using this forming method and accurately guarantee foam type face.
Description
Technical field
The present invention relates to composite material spare part manufacturing fields, the especially a kind of molding of deep camber type face PMI cystosepiment
Method.
Background technique
Composite material has outstanding advantages of specific strength, specific modulus are high, corrosion-resistant, designability is strong, in recent years, is navigating
The new high-tech industries such as sky, space flight have obtained extremely being widely applied, and more and more spare parts begin to use composite material system
It makes.
Existing composite material sandwich structure part mainly has, honeycomb and two kinds of foam core part.Due to PMI foam core
Hygroscopicity is smaller with respect to honeycomb core, and heat resisting temperature is higher, therefore PMI foam layer part obtains more widely answering in recent years
With.As composite material spare part shows the development trend of integration, enlargement, the integrations knot such as deep camber foam core part
Structure has gradually obtained the favor of designer.
Traditional curved surface PMI is foam-formed main by the way of digital control milling, has the disadvantage in that
1) woollen waste is serious, and curvature more lossy is bigger.(such as: numerical control needs the curved profile of one section of 20mm thickness of milling
Foam needs cystosepiment woollen thickness about 120mm when this section of foam type face is 55 ° of corner of one section of arc.That is 100mm thickness
Foam be milling loss.And the bigger foam woollen of thickness needs more procurement payments.)
2) digital control milling foam type face low efficiency.(the milling of clamping and thickness direction a large amount of woollens of the part on milling tool
Incisal guide causes the inefficient of digital control milling.)
3) digital control milling hyperbolic structure foam needs more set tooling auxiliary, results in waste of resources.(monolithic hyperbolic structure foam needs
Apply for that milling clamp identical with upper and lower surface type face is each a set of, the material and capital destruction of tooling manufacture are big.)
4) digital control milling deep camber foam deformation amount is big.(since deep camber foam need to be formed with thicker woollen milling, milling
Stress is big, and part buckling deformation amount is big after milling.)
Therefore, there is an urgent need to a kind of method, it can save, fast and accurately form PMI foam template face.
Summary of the invention
The present invention devises a kind of deep camber type face PMI foam panel forming method, and this method is by certain thickness PMI foam
Plate carry out type face molding on forming frock；For splicing after the molding of deep camber type face dividing, quick and saving raw material.
Technical scheme is as follows: a kind of forming method of deep camber type face PMI cystosepiment, including one has greatly
The forming frock in curvature type face, forming frock type face are equipped with segmented line, and type face is uniformly divided into several segments shaping area by segmented line
Domain is bonded after different forming areas formed according to molding process and special parameter respectively with muti-piece PMI cystosepiment,
Splice and combine into complete deep camber type face.Steps are as follows for molding process:
Step 1 will need formation theory type face to be uniformly divided into several segments according to amount of curvature, carry out the manufacture of forming frock, and
Every section of forming area segmented line is marked in tooling.
Step 2 cleans out forming frock.
Step 3 need to molding muti-piece PMI cystosepiment be placed on type face respectively on non-conterminous forming area.
Step 4 carries out bag making on forming frock, and using a small amount of N10 air guide, setting simulation is fast in bag
And connect thermocouple simulation part internal temperature.
PMI cystosepiment and forming frock are integrally heated up to 195 DEG C -205 DEG C by step 5, are kept the temperature after reaching assigned temperature
30min-60min.
Step 6 forms cystosepiment by bag vacuum 0.08MPa or more before cooling down after keeping the temperature.
Cool down tank out after step 7 heat preservation, draws part segmented line on the foam of foundation tooling segmented line after shaping.
Muti-piece PMI cystosepiment is placed on other forming areas in addition to step 3 by step 8 respectively, repeats step 4-7.
Step 9 by all molded PMI cystosepiments according to segmented line respectively by foam milling in place.
PMI cystosepiment after all processing is spliced into complete curved surface using foamed glue on forming frock by step 10.
Forming method of the invention has following advantage:
1) operating process is simple, can be formed in batches；
2) compared with die press technology for forming, manual operation under high temperature is avoided, safety is increased；
3) compared with digital control milling moulding process, monolithic foam saves 1 set of milling clamp.And reduce woollen waste, it is only necessary to select
The cystosepiment of 1mm bigger than bubble theory thickness is taken to be formed.
4) substantially without buckling deformation after forming.
5) splice after molding super foam type face can also form in two times.
Detailed description of the invention:
Theoretical profile stepwise schematic views for the first time in Fig. 1 example
Theoretical profile stepwise schematic views again in Fig. 2 example
1 section and 3 sections shaping schematic views of Fig. 3 PMI cystosepiment
2 sections of shaping schematic views of Fig. 4 PMI cystosepiment
Explanation: 1, PMI cystosepiment is numbered in figure；2, forming area
Specific embodiment
Picture 1-4, by taking the deep camber type face of one section of chord length 1500mm as an example, this deep camber type face PMI cystosepiment at
Type method will use the forming frock for having deep camber type face, and specific implementation step is as follows:
Step 1 will need formation theory type face to be uniformly divided into cambered surface molding of the several segments corner less than 70 ° according to bending degree
Region 2.
In this example as shown in Figure 1, the theoretical profile is divided into two sections of isometric cambered surfaces along bending direction first, respectively
Every section of arc both ends point-rendering tangent line is crossed, 76 ° of arc corner can be measured and be greater than 70 °.Since curvature is bigger than normal so re-starting segmentation.Such as
The theoretical profile is uniformly divided into 3 sections along bending direction shown in Fig. 2, every section of cambered surface tangent line is drawn in repetition, measures every section of shaping area
2 arc corner of domain is 53 °, less than 70 °, it is believed that bending degree is suitable, therefore divides equally mode according to three sections and be segmented type face.
Step 2 carries out the manufacture of forming frock according to step 1 segmentation method, and every section of forming area point is marked in tooling
Section line.
Step 3 cleans out forming frock.
Step 4 need to molding muti-piece PMI cystosepiment 1 be placed on type face respectively on non-conterminous forming area 2；Such as figure
Shown in 3,1 section and 3 sections of cystosepiments are in place for the first time, cystosepiment boundary need to be greater than segmented line at least 50mm.
Step 5 carries out bag making on forming frock, and using a small amount of N10 air guide, setting simulation is fast in bag and connects thermocouple
Simulate part internal temperature.
PMI cystosepiment 1 and forming frock are integrally heated up to 195 DEG C -205 DEG C by step 6, are kept the temperature after reaching assigned temperature
30min-60min.(15mm or less uses 195 DEG C, and 15mm or more uses 205 DEG C.)
Step 7 forms cystosepiment by bag vacuum 0.08MPa or more before cooling down after keeping the temperature.
Step 8 cools down after keeping the temperature to be demoulded, and segmentation is drawn on PMI cystosepiment according to the segmented line on type face before demoulding
Line.
2 sections of PMI cystosepiments 1 are placed in 2 sections of forming areas 2 as shown in Figure 4 by step 9, repeat step 5-8
Step 10 by all molded PMI cystosepiments 1 according to the segmented line drawn respectively by foam milling in place.Milling
Boundary processes according to minus tolerance and (reserves between adjacent two sections and use the identical gap of foamed glue theoretic throat with subsequent splicing).
3 pieces after processing of PMI cystosepiment 1 is spliced into complete curved surface using foamed glue on forming frock by step 11.
Claims (2)
1. a kind of forming method of deep camber type face PMI cystosepiment has the forming frock in deep camber type face including one, special
Sign is that forming frock type face is equipped with segmented line, and type face is uniformly divided into several segments forming area by segmented line, is steeped with muti-piece PMI
Foam plate is bonded respectively after different forming areas formed according to molding process and special parameter, is spliced and combined into complete
Deep camber type face.
2. a kind of forming method of deep camber type face according to claim 1 PMI cystosepiment, it is characterised in that moulding process
Process steps are as follows:
Step 1 will need formation theory type face to be uniformly divided into several segments according to amount of curvature, carry out the manufacture of forming frock, and in work
It loads onto and marks every section of forming area segmented line；
Step 2 cleans out forming frock；
Step 3 need to molding muti-piece PMI cystosepiment be placed on type face respectively on non-conterminous forming area；
Step 4 carries out bag making on forming frock, using a small amount of N10 air guide, simulated block is arranged in bag and connects thermocouple simulation
Inside parts temperature；
PMI cystosepiment and forming frock are integrally heated up to 195 DEG C -205 DEG C by step 5, are kept the temperature after reaching assigned temperature
30min-60min；
Step 6 forms cystosepiment by bag vacuum 0.08MPa or more before cooling down after keeping the temperature；
Cool down tank out after step 7 heat preservation, draws part segmented line on the foam of foundation tooling segmented line after shaping；
Muti-piece PMI cystosepiment is placed on other forming areas in addition to step 3 by step 8 respectively, repeats step 4-7；
Step 9 by all molded PMI cystosepiments according to segmented line respectively by foam milling in place；
PMI cystosepiment after all processing is spliced into complete curved surface using foamed glue on forming frock by step 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910268437.6A CN110014664A (en) | 2019-04-03 | 2019-04-03 | A kind of forming method of deep camber type face PMI cystosepiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910268437.6A CN110014664A (en) | 2019-04-03 | 2019-04-03 | A kind of forming method of deep camber type face PMI cystosepiment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110014664A true CN110014664A (en) | 2019-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910268437.6A Pending CN110014664A (en) | 2019-04-03 | 2019-04-03 | A kind of forming method of deep camber type face PMI cystosepiment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110406118A (en) * | 2019-09-02 | 2019-11-05 | 江苏美龙航空部件有限公司 | A kind of special-shaped change wall thickness cone cylinder shape composite material foam sandwich construction |
| CN113681939A (en) * | 2021-07-30 | 2021-11-23 | 江西昌河航空工业有限公司 | Equivalent substitution method for composite material thermocouple |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106739043A (en) * | 2017-03-17 | 2017-05-31 | 零八电子集团四川天源机械有限公司 | PMI foam layers radome of fighter and its manufacture method |
-
2019
- 2019-04-03 CN CN201910268437.6A patent/CN110014664A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106739043A (en) * | 2017-03-17 | 2017-05-31 | 零八电子集团四川天源机械有限公司 | PMI foam layers radome of fighter and its manufacture method |
Non-Patent Citations (1)
| Title |
|---|
| 薛会民等: "《大曲率高精度反射器面板精密成形坯料展开技术》", 《塑性工程学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110406118A (en) * | 2019-09-02 | 2019-11-05 | 江苏美龙航空部件有限公司 | A kind of special-shaped change wall thickness cone cylinder shape composite material foam sandwich construction |
| CN113681939A (en) * | 2021-07-30 | 2021-11-23 | 江西昌河航空工业有限公司 | Equivalent substitution method for composite material thermocouple |
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Application publication date: 20190716 |