CN105729830B - A kind of U-shaped unit Material Stiffened Panel autoclave integral forming method of no core - Google Patents
A kind of U-shaped unit Material Stiffened Panel autoclave integral forming method of no core Download PDFInfo
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- CN105729830B CN105729830B CN201610210307.3A CN201610210307A CN105729830B CN 105729830 B CN105729830 B CN 105729830B CN 201610210307 A CN201610210307 A CN 201610210307A CN 105729830 B CN105729830 B CN 105729830B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
- B29C70/443—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding and impregnating by vacuum or injection
-
- 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
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/002—Panels; Plates; Sheets
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to technical field of composite material molding, it is related to a kind of U-shaped unit Material Stiffened Panel autoclave integral forming method of no core.The present invention devises a kind of U-shaped unit Material Stiffened Panel autoclave integral forming method of no core：The forming method of no core is employed, meets inside parts Forming Quality, the requirement of stud perpendicularity, while improves mold temperature field uniformity, multi-mould is realized and enters tank, reduce production cost.Shaping equipment in moulding process is outside vacuum bag, the required precision of type face is not high, U-shaped unit laying mould is intended only as the use of laying mould, part is followed to enter tank, required precision is relatively low, and without pressurized cooking process, without placement mould on part, in the absence of fit clearance, pressure is applied directly on part, and inside parts quality is good；For the method compared with conventional method, moulding process is simple, and the manufacturing cycle is short, good thermal conduction, and the heating uniformity of part is good, ensures that more products can be once in large-scale hot pressing in-tank-solidification.
Description
Technical field
The invention belongs to technical field of composite material molding, it is related to a kind of U-shaped unit Material Stiffened Panel autoclave of no core
Integral forming method.
Background technology
Advanced composite material is a kind of new material to emerge the 1960s, and powerful life is just shown once coming out
Power.Currently advanced composite obtains a wide range of applications in aerospace structure, and with aluminium alloy, titanium alloy, alloy
Steel turns into four big structure materials of Aero-Space together.Position that advanced composite material is applied aboard and the number of dosage are
As one of important indicator for weighing aircaft configuration advance.
Traditional Material Stiffened Panel moulding technique application comparative maturity is that have A (die matches somebody with somebody synthesis type with die) and B
(die 10 matches somebody with somebody synthesis type with soft mode 11), due to wider width between the unit of U-shaped unit Material Stiffened Panel, according to conventional method system
Standby U-shaped unit Material Stiffened Panel can bring the difficulty in many manufactures, match somebody with somebody synthesis type (as shown in Figure 1) according to die and die,
Then
1.U shape cell widths are bigger, and all standing skin-surface, and cooperation really up to the mark there will certainly be fit clearance, band
Carry out pressure transmission uneven phenomenon, easily cause internal soundness defect；
2. load too many mould in vacuum bag, it is uneven to cause heat transfer, Uniformity of Temperature Field is deteriorated, and cause not
It can realize that multi-mould enters tank；
3. mould reversion being present, coordinating, the precision problem of positioning, mould processing and process operation difficulty are so added,
It is also easy to produce defect and increases cost；
The structure type of 4.U shape unit all standing skin-surfaces, is all placed in vacuum bag using by U-shaped unit mould,
In the curing process, because of the thermal coefficient of expansion reason of mould, axis degree is caused to offset.
Match somebody with somebody synthesis type (as shown in Figure 2) according to die and soft mode, then
1. use soft mould, it is necessary to preparation technology part, and need turn over soft mode processed, so add prepare cost and
Cycle；
2.U shape cell widths are bigger, and cooperation really up to the mark there will certainly be fit clearance, bring pressure transmission uneven phenomenon, Yi Zao
Into internal soundness defect；
3. load too many mould in vacuum bag, it is uneven to cause heat transfer, Uniformity of Temperature Field is deteriorated, and cause not
It can realize that multi-mould enters tank；
4. mould reversion being present, coordinating, the precision problem of positioning, mould processing and process operation difficulty are so added,
It is also easy to produce defect and increases cost.
The content of the invention
The purpose of the present invention is to propose to a kind of pressure transmission, heat transfer is uniform, the low no core of cost U-shaped unit Material Stiffened Panel is warm
Press tank integral forming method (as shown in Figure 3).The present invention technical solution be,
1) distinguishes blanking according to the design requirement of covering and U-shaped unit；
2) covering formings mould is a steel mold with skin shape homotype face, in die face outside laying skin areas
There are two positioning pedestals, the center line of positioning pedestal is located at the position of center line of covering, center line and the U-shaped unit of positioning pedestal
Material Stiffened Panel diameter parallel, the laying covering on laying skin areas in die face, and carry out in lay-up process vacuumizing pressure
It is real；
3) .U shapes unit laying mould is divided into positioning U-shaped unit laying mould and non-locating U-shaped unit laying mould, positions U-shaped list
First laying mould is the rectangular mould with positioning U-shaped unit homotype face, there is an alignment pin respectively at the both ends of mould, alignment pin
Center line is located at the position of center line of U-shaped unit, and the width of alignment pin is identical with the width of the positioning pedestal on covering forming mould,
Non-locating U-shaped unit laying mould and the rectangular mould in non-locating U-shaped unit homotype face, spread respectively in U-shaped unit by design requirement
Laying U-shaped unit on the positioning U-shaped unit laying mould and non-locating U-shaped unit laying mould of folded mould, and carried out in lay-up process
Vacuumize compacting；
4) is sturdy with covering by the U-shaped unit one side of the positioning U-shaped unit mould after compacting, and will position on U-shaped unit mould
Alignment pin be respectively placed in the pedestal on covering forming mould, make covering and positioning U-shaped unit fix, afterwards will position U-shaped list
First mould is removed from covering die；5) removes the U-shaped unit on the non-locating U-shaped unit mould after compacting, is determined by L-shaped
Type device card has card stud and the positioning U-shaped unit side of L-shaped shaping equipment side in the right angle area of U-shaped unit side
Stud is sturdy while sturdy with covering, removes L-shaped shaping equipment；
6) places other non-locating U-shaped units, the same above-mentioned steps of laying method according to design requirement on covering successively
5, until the U-shaped unit of complete design requirement is placed in the both sides that U-shaped unit is positioned on covering；
7) is by auxiliary material：Peelable cloth, barrier film, airfelt, vacuum bag uniform ground are placed on the U-shaped assembled
On unit Material Stiffened Panel, a L-shaped shaping equipment is respectively placed in the both sides of U-shaped unit Material Stiffened Panel stud outside vacuum bag, fixed
The stud of wallboard, and clamped by shaping equipment, compacting is vacuumized, autoclave global formation is carried out according to material therefor.
The present invention has the advantage that and beneficial effect,
The present invention devises a kind of U-shaped unit Material Stiffened Panel autoclave integral forming method of no core：Employ centreless
The forming method of mould, meet inside parts Forming Quality, the requirement of stud perpendicularity, while improve mold temperature field uniformity, it is real
Show multi-mould and entered tank, reduce production cost.
This moulding process solves many technological difficulties, ensure that the quality of product, and reduces shaping cost：
1. the shaping equipment in moulding process is light easy to operate, the difficulty in forming process is reduced, shaping equipment is in vacuum
Bag outside, the required precision of type face is not high, reduces manufacturing cost；
2.U shape unit laying moulds are intended only as the use of laying mould, do not follow part to enter tank, and required precision is relatively low,
And without pressurized cooking process, mold materials and manufacturing cost are low；
3. without mould is placed on part, in the absence of fit clearance, pressure is applied directly on part, inside parts quality
It is good；
4. the method, compared with conventional method, moulding process is simple, the manufacturing cycle is short；
5. not having mould on the part in vacuum bag, good thermal conduction, the heating uniformity of part is good, ensures that more products can one
It is secondary in large-scale hot pressing in-tank-solidification.
Brief description of the drawings
Fig. 1 is die and die shaping schematic view in the prior art；
Fig. 2 is die and soft mould schematic diagram in the prior art；
Fig. 3 is the present invention without mandrel molding method schematic diagram；
Fig. 4 is the assembling schematic diagram of forming method of the present invention.
Covering die 1；Covering 2；U-shaped unit 3；Peelable cloth 4；Barrier film 5；Airfelt 6；Vacuum bag 7；L-type shaping equipment
8；Step up shaping equipment 9；U-shaped unit die 10；U-shaped unit soft mode 11；Position U-shaped unit 12；Left 1U shapes unit 13；Stud
14。
Embodiment
The present invention is elaborated with reference to accompanying drawing.
1) distinguishes blanking according to the design requirement of covering 2 and U-shaped unit 3；
2) covering formings mould 1 is one (structure type of mould can be framework with the steel mold in skin shape homotype face
Formula either flat mould), laying skin areas Wai You pottings area and two positioning pedestals in die face, position base
The center line of seat is located at the position of center line of covering, center line and the U-shaped unit Material Stiffened Panel diameter parallel of positioning pedestal, in mould
Laying covering on laying skin areas on tool face, and every 1~4 layer vacuumize in lay-up process and be compacted once, take out true
At least 20min between space-time, vacuum at least -0.06MPa；
3) .U shapes unit laying mould is divided into positioning U-shaped unit laying mould and non-locating U-shaped unit laying mould, positions U-shaped list
First laying mould is the rectangular mould with positioning U-shaped unit homotype face, there is an alignment pin respectively at the both ends of mould, alignment pin
Center line is located at the position of center line of U-shaped unit, and the width of alignment pin is identical with the width of the positioning pedestal on covering forming mould,
Non-locating U-shaped unit laying mould and the rectangular mould in non-locating U-shaped unit homotype face, spread respectively in U-shaped unit by design requirement
Laying U-shaped unit on the positioning U-shaped unit laying mould and non-locating U-shaped unit laying mould of folded mould, and every 1 in lay-up process
~4 layers carry out vacuumizing compacting once, pumpdown time at least 20min, vacuum at least -0.06MPa；
4) is sturdy with covering by the U-shaped unit one side of the positioning U-shaped unit mould after compacting, and will position on U-shaped unit mould
Alignment pin be respectively placed in the pedestal on covering forming mould, make covering and positioning U-shaped unit fix, afterwards will position U-shaped list
First mould is removed from covering die；5) by the non-locating U-shaped unit (left 1U shapes unit 13) on the left of U-shaped unit from paving
Removed on folded mould, and the right angle area on the right side of U-shaped unit is stuck in by L-shaped shaping equipment, by its right side stud 14 and positioning U-shaped list
The left side stud of member 12 is sturdy while sturdy with covering, and so left 1U shapes unit is just fixed, and design requirement is pressed with the method
Other U-shaped units in left side are sequentially fixed on covering；
6) removes the non-locating U-shaped unit (right 1U shapes unit) on the right side of U-shaped unit from laying mould, passes through L-shaped
Shaping equipment is stuck in the right angle area on the left of U-shaped unit, and the right side stud of its left side stud and positioning U-shaped unit is sturdy, so
Right 1U shapes unit is just fixed, and other U-shaped units on right side are sequentially fixed on covering by design requirement with the method；
7) is by auxiliary material：Peelable cloth 4, barrier film 5, airfelt 6, vacuum bag 7 uniform ground are placed on what is assembled
On U-shaped unit Material Stiffened Panel, a L-shaped shaping equipment 8 is respectively placed in the both sides of U-shaped unit Material Stiffened Panel stud outside vacuum bag,
The stud of fixed wallboard, and clamped by shaping equipment 9, compacting is vacuumized, autoclave global formation is carried out according to material therefor.
Claims (2)
1. a kind of U-shaped unit Material Stiffened Panel autoclave integral forming method of no core, it is characterized in that,
1) distinguishes blanking according to the design requirement of covering and U-shaped unit；
2) covering formings mould is a steel mold with skin shape homotype face, has two outside laying skin areas in die face
Individual positioning pedestal, the center line of positioning pedestal are located at the position of center line of covering, center line and the U-shaped unit reinforcement of positioning pedestal
Wallboard diameter parallel, the laying covering on laying skin areas in die face, and carry out in lay-up process vacuumizing compacting；
3) .U shapes unit laying mould is divided into positioning U-shaped unit laying mould and non-locating U-shaped unit laying mould, positioning U-shaped unit paving
Folded mould is the rectangular mould with positioning U-shaped unit homotype face, there is an alignment pin, the center of alignment pin respectively at the both ends of mould
Line is located at the position of center line of U-shaped unit, and the width of alignment pin is identical with the width of the positioning pedestal on covering forming mould, non-fixed
Position U-shaped unit laying mould is the rectangular mould with non-locating U-shaped unit homotype face, by design requirement respectively in U-shaped unit laying
Laying U-shaped unit on the positioning U-shaped unit laying mould and non-locating U-shaped unit laying mould of mould, and vacuumized in lay-up process
Compacting；
4) is sturdy with covering by the U-shaped unit one side of the positioning U-shaped unit laying mould after compacting, and will position U-shaped unit laying
Alignment pin on mould is respectively placed in the pedestal on covering forming mould, is fixed covering and positioning U-shaped unit, will be positioned U afterwards
Shape unit laying mould is removed from covering forming mould；
5) removes the U-shaped unit on the non-locating U-shaped unit laying mould after compacting, and U-shaped list is stuck in by L-shaped shaping equipment
The right angle area of first side, by card have the stud of the stud of L-shaped shaping equipment side and positioning U-shaped unit side sturdy and meanwhile with illiteracy
Skin is sturdy, removes L-shaped shaping equipment；
6) places other non-locating U-shaped units according to design requirement on covering successively, and laying method is with above-mentioned steps 5),
Until the U-shaped unit of complete design requirement is placed in the both sides that U-shaped unit is positioned on covering；
7) is by auxiliary material：Peelable cloth, barrier film, airfelt, vacuum bag uniform ground are placed on the U-shaped unit assembled
On Material Stiffened Panel, a L-shaped shaping equipment, fixed wallboard are respectively placed in the both sides of U-shaped unit Material Stiffened Panel stud outside vacuum bag
Stud, and clamped by L-shaped shaping equipment, vacuumize compacting, autoclave global formation is carried out according to material therefor.
2. a kind of U-shaped unit Material Stiffened Panel autoclave integral forming method of no core according to claim 1, its feature
It is that covering forming mould is different according to shapes and sizes, is frame type mould or flat mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610210307.3A CN105729830B (en) | 2016-04-06 | 2016-04-06 | A kind of U-shaped unit Material Stiffened Panel autoclave integral forming method of no core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610210307.3A CN105729830B (en) | 2016-04-06 | 2016-04-06 | A kind of U-shaped unit Material Stiffened Panel autoclave integral forming method of no core |
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| Publication Number | Publication Date |
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| CN105729830A CN105729830A (en) | 2016-07-06 |
| CN105729830B true CN105729830B (en) | 2018-04-10 |
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| CN108943766B (en) * | 2017-05-19 | 2022-05-13 | 中国商用飞机有限责任公司 | Co-bonding forming process for T-shaped reinforced wall plate made of composite material |
| CN108608606B (en) * | 2018-05-23 | 2024-03-15 | 成都飞机工业（集团）有限责任公司 | Die for manufacturing U-shaped composite material integrated reinforced part |
| CN110978564B (en) * | 2019-12-13 | 2021-11-02 | 中国航空工业集团公司基础技术研究院 | Integral forming method of U-shaped unit reinforced wall plate |
| CN111923439B (en) * | 2020-06-22 | 2021-10-08 | 成都飞机工业（集团）有限责任公司 | Manufacturing method of L-shaped edge composite material part |
| CN111907091B (en) * | 2020-07-02 | 2022-04-12 | 哈尔滨卡普勒广联航空复合材料有限公司 | Method for pressurizing T-shaped and/or I-shaped long girders of composite material reinforced wallboard |
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| US5484277A (en) * | 1989-12-26 | 1996-01-16 | Mcdonnell Douglas Corporation | Mandreless molding system |
| CN102806617B (en) * | 2012-06-04 | 2014-11-05 | 中航复合材料有限责任公司 | Die for integrally forming I-shaped reinforcement composite material wall plate |
| CN103552256B (en) * | 2013-10-25 | 2016-06-22 | 中航复合材料有限责任公司 | A kind of autoclave integral forming method of composite Dual side reinforced wallboard |
| CN103950209A (en) * | 2014-03-11 | 2014-07-30 | 中航复合材料有限责任公司 | Molding device and molding method for U-shaped composite material stringer blank |
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