CN105172161B - It is a kind of with partially recessed grid stressed-skin construction automatic fiber placement forming method - Google Patents
It is a kind of with partially recessed grid stressed-skin construction automatic fiber placement forming method Download PDFInfo
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- CN105172161B CN105172161B CN201510521039.2A CN201510521039A CN105172161B CN 105172161 B CN105172161 B CN 105172161B CN 201510521039 A CN201510521039 A CN 201510521039A CN 105172161 B CN105172161 B CN 105172161B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/342—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
-
- 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
- B29C70/38—Automated lay-up, e.g. using robots, laying filaments according to predetermined patterns
- B29C70/382—Automated fiber placement [AFP]
-
- 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
- B29C70/38—Automated lay-up, e.g. using robots, laying filaments according to predetermined patterns
- B29C70/386—Automated tape laying [ATL]
-
- 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
Abstract
The invention discloses a kind of with partially recessed grid stressed-skin construction automatic fiber placement forming method, comprise the following steps：Selection mould；Using hot melt prepreg；Using hot melt prepreg, preimpregnation silk is prepared；Aid in completing the laying and grid housing other parts laying of partially recessed position thickened area by hand using prepreg；Suction glue is carried out in autoclave；Carry out first time covering laying；Covering is carried out in autoclave and inhales glue；Carry out second covering laying；Solidification；Grinding process, completes to be molded with partially recessed grid stressed-skin construction automatic fiber placement.The inventive method solve lower recess cannot automatic fiber placement technical problem, realize application of the automatic fiber placement technology on composite typical structure part.
Description
Technical field
The present invention relates to a kind of automatic fiber placement forming method, belong to composite material process planning technology.
Background technology
Foreign countries are widely used in automatic forming technology in composite material skin component class product, and it is with automatic fiber placement skill
Art is Typical Representative.Automatic fiber placement technology is that several preimpregnation silk multiaxis placement head (mechanical hand) are determined according to design requirement
Laying direction be laid in mandrel surface after pressure roller next part is a silk ribbon, compacting sizing, whole process by computer measurement and control,
Coordination system is completed.
The winding of automatic fiber placement technology set fiber and the advantage of automated tape-laying technology, can according to component body surface shape
The change of shape, cut off tow at any time, it is necessary to when continue to convey tow, be adapted to the complicated shape structure such as concave curved surface, convex surface, variable cross-section
Part is molded.Foreign countries include U.S. Minotaur rocket rectifications using the composite conical shell class component of automatic fiber placement technology shaping
Cover, the Cryogenic tank of U.S. space shuttle, Atlas5 type carrier rocket load adapters etc..
At present, the conventional grid reinforced structure of space industry is generally the assembly of simple revolving body or simple revolving body, and
Grid ribbed lattice housing for the bent bus of non-analytic solutions and the grid stressed-skin construction with partially recessed structure from
Dynamic piddler is not yet related to, and many Technological adaptabilities are improved or upgrading is necessary.
The content of the invention
Present invention solves the technical problem that being：Overcome the deficiencies in the prior art, there is provided a kind of to be covered with partially recessed grid
Skin structure automatic fiber placement forming method, solve lower recess cannot automatic fiber placement technical problem, realize automatic fiber placement skill
Application of the art on composite typical structure part.
Technical solution of the invention is：It is a kind of with partially recessed grid stressed-skin construction automatic fiber placement forming method,
Comprise the following steps：
(1) mould is selected；
(2) hot melt prepreg is used, according to product three-dimensional digital model, the laying size of subordinate's concave region of playing a game is carried out
It is accurate to calculate, and utilize the accurate blanking of automatic blanking equipment；
(3) hot melt prepreg is used, according to product three-dimensional digital model, the preimpregnation silk that the laying shaping of estimation covering is used
Quantity, and prepare preimpregnation silk using silk point cutting device is presoaked；
(4) aid in completing the laying and grid of partially recessed position thickened area by hand using the prepreg of step (2)
Stressed-skin construction other parts laying；
(5) suction glue is carried out in autoclave, using rigidity, flexible combination former, pressing plate or pressure is passed through at partially recessed place
Ring shaping；
(6) first time covering laying is carried out：
(6.1) for mould installs prolonged process ring additional, realized using automatic fiber placement equipment using the preimpregnation silk of step (3)
Equal thickness covering lays, and without obvious bedding void in laying；
(6.2) covering first vacantly lays placement head when partially recessed place lays, pressure roller not with partially recessed place into
Type die surface or prepreg are contacted, and are only thickeied in partially recessed position and are compacted at area edge or prolonged process ring；
(6.3) after the completion of each laying piddler, by the preimpregnation at partially recessed place silk not being compacted be cut off at outer edge, and
Preimpregnation silk is carried out into flange compaction treatment in partially recessed region by hand；
(7) after the completion of first time covering laying, covering is carried out in autoclave and inhales glue, partially recessed place by pressure ring or
Pressing plate shaping, then coat compacting by outer die combinations；
(8) second covering laying is carried out
Second covering laying is carried out in the way of first time covering laying, covering is reached the thickness being pre-designed.
(9) the grid stressed-skin construction that will be processed by above-mentioned steps is in hot pressing in-tank-solidification；
(11) after the completion of solidifying, grinding process is carried out to grid stressed-skin construction, removes burrs on edges, completed with partially recessed
Grid stressed-skin construction automatic fiber placement shaping.
When the dimension precision requirement of authorities' subordinate's recess is higher, after the completion of second covering laying, at partially recessed place
Increase machine adds removal laying, and after the solidification is complete, treatment is machined out to grid stressed-skin construction, and removal machine adds layer.
When inhaling glue in autoclave in the step (5), 80 DEG C -85 DEG C of glue temperature, soaking time 60min, pressure are inhaled
0.3MPa±0.02MPa。
When carrying out covering suction glue in the step (7) in autoclave, -90 DEG C of glue temperature 70 C, soaking time are inhaled
60min-120min, pressure 0.3MPa-0.6MPa.
In the step (9) in hot pressing in-tank-solidification, 160 DEG C -180 DEG C of solidification temperature, hardening time 6h-8h, solidification
Pressure 0.6MPa-0.8MPa.
Compared to the prior art the present invention, has the advantages that：
For the grid covering member of the partially recessed structure of band (such as window and end frame), because automatic fiber placement technology is in shaping
The covering laying compacting in partially recessed region cannot be realized during covering, and is easy to covering recessed area edge occur colliding dry
Relate to, it is proposed that a kind of grid stressed-skin construction automatic fiber placement forming method being suitable to partially recessed structure, solve under part
Recess automatic fiber placement head and the interference problem of mould, placement head by way of partially recessed place vacantly lays, realize band
The continuous lay of the grid stressed-skin construction laying track of partially recessed structure, it is ensured that shaping efficiency, and turned over by auxiliary by hand
Side is compacted and repeatedly inhales glue shaping, and the grid ribbed lattice housing for realizing the non-analytic solutions song bus with partially recessed structure is complete
Angle laying high-quality lays and overall co-curing shaping.
Brief description of the drawings
Fig. 1 is the inventive method flow chart；
Fig. 2 is lower end frame covering, strengthens area and rib ply sequence schematic diagram；
Fig. 3 is vertical end frame laying schematic diagram；
Fig. 4 is vertical end frame part matched moulds state；
Fig. 5 is vertical end frame part laying schematic diagram；
Fig. 6 is that covering inhales glue vertical end frame part matched moulds view；
Fig. 7 is solidification vertical end frame part matched moulds view；
Fig. 8 is that window strengthens plot structure schematic diagram；
Fig. 9 is window part laying schematic diagram；
Figure 10 is that window locally inhales blocking tool view；
Figure 11 is window part covering laying schematic diagram；
Figure 12 is that covering inhales glue and solidification vertical end frame part matched moulds view.
Specific embodiment
For space flight model frequently with the common requirement of taper (curved surface) construction sections high-quality shaping and domestic multiple
The technological gap of condensation material stressed-skin construction automatic moulding and the moulding process present situation of state's inner conical (curved surface) housing, propose a kind of suitable
In the molding mode of the composite material grid stressed-skin construction of the partially recessed structure of band (such as window and vertical end frame), using auxiliary by hand
The mode for helping automatic fiber placement to be molded, is capable of achieving the composite material taper housing with partially recessed structure (such as window and vertical end frame)
Full angle laying shaping.
As shown in figure 1, the inventive method comprises the following steps：
(1) mould is selected；
(2) hot melt prepreg is used, according to product three-dimensional digital model, two dimensional surface laying shape chi is converted into
Very little, the laying size of subordinate's concave region of playing a game accurately is calculated, and utilizes the accurate blanking of automatic blanking equipment；
(3) hot melt prepreg is used, piddler track is planned according to product three-dimensional digital model, silk is presoaked to covering laying
Quantity is calculated, and prepares preimpregnation silk using silk point cutting device is presoaked；
(4) aid in completing the laying and grid of partially recessed position thickened area by hand using the prepreg of step (2)
Housing other parts laying；
(5) carry out inhaling glue pre-compacted in autoclave, using rigidity, flexible combination former, at partially recessed place by pressure
Plate or press strip shaping；Inhale 80 DEG C -85 DEG C of glue temperature, soaking time 60min, pressure 0.3MPa ± 0.02MPa.
(6) first time covering laying is carried out：
(6.1) for mould installs prolonged process ring additional, added using the pneumatic pressure roller pressure of automatic fiber placement equipment, infrared lamp
Heat, realizes that equal thickness covering lays using automatic fiber placement equipment, and without obvious bedding void in laying；Now skin thickness is less than
The thickness being pre-designed；
(6.2) covering first vacantly lays placement head when partially recessed place lays, pressure roller not with partially recessed place into
Type die surface or prepreg are contacted, and are only thickeied in partially recessed position and are compacted at area edge or prolonged process ring；
(6.3) after the completion of each laying piddler, by the preimpregnation at partially recessed place silk not being compacted be cut off at outer edge, and
Preimpregnation silk is carried out into flange compaction treatment in partially recessed region by hand；
(7) after the completion of first time covering laying, covering is carried out in autoclave and inhales glue, partially recessed place by press strip or
Pressing plate shaping, then coat compacting by outer die combinations；Inhale -90 DEG C of glue temperature 70 C, soaking time 60min-120min, pressure
0.3MPa-0.6MPa。
(8) second covering laying is carried out：Second covering laying is carried out in the way of first time covering laying, makes covering
Reach the thickness being pre-designed.
(9) the grid stressed-skin construction that will be processed by above-mentioned steps uses rigid former in hot pressing in-tank-solidification, during solidification,
160 DEG C -180 DEG C of solidification temperature, hardening time 6h-8h, solidifying pressure 0.6MPa-0.8MPa.；
(11) after the completion of solidifying, grinding process is carried out to grid stressed-skin construction, removes burrs on edges, completed with partially recessed
Grid stressed-skin construction automatic fiber placement shaping.
When the dimension precision requirement of authorities' subordinate's recess is higher, after the completion of second covering laying, at partially recessed place
Increase machine adds removal laying, and after the solidification is complete, treatment is machined out to grid stressed-skin construction, and removal machine adds layer.
It is partially recessed including two major classes：It is closed and non-enclosed, it is closed with window as Typical Representative, it is non-enclosed with
Vertical end frame is Typical Representative, provides two embodiments by taking vertical end frame and window as an example separately below.
Embodiment 1：Grid stressed-skin construction shaping with vertical end frame
Vertical end frame forming requirements：Member lower frame is vertical end mount structure.To keep covering laying continuous, in lower end frame
Laying scheme is changed at thinning place, and opposite end frame thickeies laying and deleted, and thickness is reduced to 11.5mm by 18.5mm along R8 radians.Such as
Fig. 2 show lower end frame covering, strengthens area and rib ply sequence schematic diagram.
Because vertical end frame and thickened area equal thickness are larger, it is therefore desirable to which hot melt prepreg is first paved into 5-7 layers of material
Block, enters baking oven pre-suction glue, then size as required, carries out the blanking of material block, laying, autoclave and inhales glue.
Vertical end frame cladding need to load onto lower loop when inhaling glue, and at end, frame laying ring is fixed and inhales glue sizing die, to ensure it
End frame circumferential surface flatness.
Before covering laying, vertical end frame must being strengthened into area inside, thickened area is paved finishes.
(1) mould prepares
Die assembly is installed, prolonged process ring wouldn't be installed, clear up die surface, and release agent application.
(2) prepreg blanking
Using hot melt prepreg.According to product three-dimensional digital model, by conversion, to vertical end frame transition region laying chi
Little progress row precise art, and utilize the accurate blanking of automatic blanking equipment.
(3) preimpregnation silk prepares
Using hot melt prepreg.According to product three-dimensional digital model, covering laying preimpregnation silk quantity is calculated, and
Preimpregnation silk is prepared using silk point cutting device is presoaked.
(4) vertical end frame laying
A. auxiliary completes laying and other portions of grid housing of vertical end frame position lower end Kuang Duankuang thickened areas by hand
Divide laying；
B. by hand auxiliary complete vertical end frame position lower end frame end frame ramp-transition zone laying and grid housing its
His part laying；
It is illustrated in figure 3 the vertical end frame schematic diagram after completing laying.
(5) glue is inhaled
Inhale glue is carried out in autoclave, using rigidity, flexible combination former, pressure ring shaping is increased at the frame of end, inhales glue temperature
80 DEG C -85 DEG C of degree, soaking time 60min, pressure 0.3MPa ± 0.02MPa.It is illustrated in figure 4 suction glue vertical end frame part matched moulds
View.
(6) first time covering laying is carried out：
Skin thickness 2.5mm, laying is [(± 45/0/ ± 30/0/ ± 30)/90 (1 layer)] s, is molded using automatic fiber placement.
According to skin thickness, paved, first time paving [(± 45/0/ ± 30/0/ ± 30)/90/ ± 30/ is carried out using laying method twice
0/±30]。
Component covering should install prolonged process ring additional before laying, and it uses 16 tow to lay, and is being laid according to planned trajectory
Increase and decrease yarn control is carried out in journey, realizes that equal thickness covering lays.Pressed using pneumatic pressure roller in lay, using infrared lamps,
Well it is plated between making laying, without obvious bedding void.
When component covering lays at vertical end frame, because its appearance and size is smaller relative to pressure roller size, first by placement head
It is hanging to lay, only it is compacted at prolonged process ring, and the non-compacted region of 15mm is left near die side in pressure ring.As schemed
5 show vertical end frame part laying schematic diagram.
After the completion of each laying piddler, the preimpregnation silk at vertical end frame be not compacted be cut off at outer edge, and by hand
Preimpregnation silk is carried out into flange compaction treatment in vertical end frame region.
(7) covering inhales glue
Autoclave is carried out after the completion of first time covering laying and inhales glue pre-compacted, shaping.
Covering inhales glue to be carried out in autoclave, as needed, ring press strip shaping is increased at vertical end frame, then by vulva
Die combination cladding compacting.Inhale -90 DEG C of glue temperature 70 C, soaking time 60min-120min, pressure 0.3MPa-0.6MPa.Such as Fig. 6
It show covering and inhales glue vertical end frame part matched moulds view.
(8) second covering laying is carried out
Carried out in the way of first time covering laying for the second time that remaining [± 45] are paved.
(9) machine adds a layer laying
Vertical end frame dimension precision requirement is higher, and vertical end frame is reduced to by 18.5mm due to its overlay thickness along R8 radians
11.5mm, to ensure radian, increases vertical end frame machine and adds removal laying using winding, and its essence is ensured by machining after the completion of solidification
Degree.
(10) solidify
Product uses rigid former, 160 DEG C -180 DEG C of solidification temperature, hardening time 6h- in hot pressing in-tank-solidification, during solidification
8h, solidifying pressure 0.6MPa-0.8MPa.Solidification vertical end frame part matched moulds view is as shown in Figure 7.
(11) machine
After product goes out tank, treatment is machined out, removal machine adds layer, and keeps vertical end frame size, carries out burnishing part
Reason, removes burrs on edges, completes the grid stressed-skin construction automatic fiber placement shaping with vertical end frame.
Embodiment 2：Grid stressed-skin construction shaping with window
Window forming requirements：Window strengthens area's straight forming out, and non-product solidifies post-processing, and its thickness has 20mm to exist
Window edge falls sharply to 10mm, and edge is different from vertical end frame edge, and its laying edge is needed perpendicular to covering.Such as Fig. 8 institutes
It is shown as window and strengthens plot structure schematic diagram.
(1) mould prepares
Die assembly is installed, prolonged process ring wouldn't be installed, clear up die surface, and release agent application.
(2) prepreg blanking
Using hot melt prepreg.According to product three-dimensional digital model, by conversion, essence is carried out to window region laying size
True technology, and utilize the accurate blanking of automatic blanking equipment.
(3) preimpregnation silk prepares
Using hot melt prepreg.According to product three-dimensional digital model, covering laying preimpregnation silk quantity is calculated, and
Preimpregnation silk is prepared using silk point cutting device is presoaked.
(4) window laying
A. auxiliary completes the laying and grid housing other parts laying of step thickened area in window by hand；
B. auxiliary completes the laying and grid housing other parts laying of window outer step thickened area by hand；
It is illustrated in figure 9 window part laying schematic diagram.
(5) glue is inhaled
Inhale glue is carried out in autoclave, using rigidity, flexible combination former, cap reforming is installed at window, inhales glue temperature
80 DEG C -85 DEG C of degree, soaking time 60min, pressure 0.3MPa ± 0.02MPa.If Figure 10 is that window locally show by suction blocking tool state
It is intended to.
(6) first time covering laying is carried out：
Skin thickness 2.5mm, laying is [(± 45/0/ ± 30/0/ ± 30)/90 (1 layer)] s, is molded using automatic fiber placement.
According to skin thickness, paved, first time paving [(± 45/0/ ± 30/0/ ± 30)/90/ ± 30/ is carried out using laying method twice
0/±30]。
Cover body covering is laid and is laid using 16 tow, carries out increase and decrease yarn control in laid course according to planned trajectory, real
Existing equal thickness covering lays.Pressed using pneumatic pressure roller in lay, using infrared lamps, be well plated between making laying, without bright
Aobvious bedding void.
It is first that placement head is hanging because its appearance and size is smaller relative to pressure roller size when cover body covering lays at window
Lay, pressure roller is not contacted with the window boss on segmental mandrel, only contacted with the compacting of window outer edge.
After the completion of each laying piddler, region between the preimpregnation thread in the window at window is cut perpendicular to machine direction
It is disconnected, and the manual silk that will presoak carries out flange compaction treatment in window area.
It is as shown in figure 11 window part covering laying schematic diagram.
(7) covering inhales glue
Autoclave is carried out after the completion of first time covering laying and inhales glue pre-compacted, shaping.
Covering inhales glue to be carried out in autoclave, as needed, cap reforming is increased at window, then by outer die combinations bag
Cover compacting.Inhale -90 DEG C of glue temperature 70 C, soaking time 60min-120min, pressure 0.3MPa-0.6MPa.
(8) second covering laying is carried out：
Second covering laying is carried out in the way of first time covering laying, remaining [± 45] are paved.
(9) solidify
Product uses rigid former, 160 DEG C -180 DEG C of solidification temperature, hardening time 6h- in hot pressing in-tank-solidification, during solidification
8h, solidifying pressure 0.6MPa-0.8MPa.It is as shown in figure 12 solidification vertical end frame part matched moulds view.
(11) post-process
After product goes out tank, grinding process is carried out, remove burrs on edges, completed the grid stressed-skin construction with window and spread automatically
Silk shaping.
Referring to embodiment 1 and embodiment 2, the shaping of the grid stressed-skin construction with window and vertical end frame can be completed, had
Body inhales glue number of times can be adjusted as needed.
The content not being described in detail in description of the invention belongs to the known technology of professional and technical personnel in the field.
Claims (5)
1. it is a kind of with partially recessed grid stressed-skin construction automatic fiber placement forming method, it is characterised in that to comprise the following steps：
(1) mould is selected；
(2) hot melt prepreg is used, according to product three-dimensional digital model, the laying size of subordinate's concave region of playing a game is carried out accurately
Calculate, and utilize the accurate blanking of automatic blanking equipment；
(3) hot melt prepreg is used, according to product three-dimensional digital model, the preimpregnation silk number that the laying shaping of estimation covering is used
Amount, and prepare preimpregnation silk using silk point cutting device is presoaked；
(4) aid in completing the laying and grid covering of partially recessed position thickened area by hand using the prepreg of step (2)
Structure other parts laying；
(5) suction glue is carried out in autoclave, it is whole by pressing plate or pressure ring at partially recessed place using rigidity, flexible combination former
Shape；
(6) first time covering laying is carried out：
(6.1) for mould installs prolonged process ring additional, uniform thickness is realized using automatic fiber placement equipment using the preimpregnation silk of step (3)
Degree covering lays, and without obvious bedding void in laying；
(6.2) covering first vacantly lays placement head when partially recessed place lays, pressure roller not with the shaping mould at partially recessed place
Tool surface or prepreg contact, only thicken in partially recessed position and are compacted at area edge or prolonged process ring；
(6.3) after the completion of each laying piddler, by the preimpregnation at partially recessed place silk not being compacted be cut off at outer edge, and by hand
Preimpregnation silk is carried out into flange compaction treatment in partially recessed region；
(7) after the completion of first time covering laying, covering is carried out in autoclave and inhales glue, pressure ring or pressing plate are passed through at partially recessed place
Shaping, then coat compacting by outer die combinations；
(8) second covering laying is carried out：
Second covering laying is carried out in the way of first time covering laying, covering is reached the thickness being pre-designed；
(9) the grid stressed-skin construction that will be processed by above-mentioned steps is in hot pressing in-tank-solidification；
(11) after the completion of solidifying, grinding process is carried out to grid stressed-skin construction, removes burrs on edges, completed with partially recessed net
Lattice stressed-skin construction automatic fiber placement is molded.
2. according to claim 1 a kind of with partially recessed grid stressed-skin construction automatic fiber placement forming method, its feature
It is：When the dimension precision requirement of authorities' subordinate's recess is higher, after the completion of second covering laying, increase at partially recessed place
Machine adds removal laying, and after the solidification is complete, treatment is machined out to grid stressed-skin construction, and removal machine adds layer.
3. according to claim 1 a kind of with partially recessed grid stressed-skin construction automatic fiber placement forming method, its feature
It is：When inhaling glue in autoclave in the step (5), 80 DEG C -85 DEG C of glue temperature, soaking time 60min, pressure 0.3MPa are inhaled
±0.02MPa。
4. according to claim 1 a kind of with partially recessed grid stressed-skin construction automatic fiber placement forming method, its feature
It is：When carrying out covering suction glue in the step (7) in autoclave, -90 DEG C of glue temperature 70 C, soaking time 60min- are inhaled
120min, pressure 0.3MPa-0.6MPa.
5. according to claim 1 a kind of with partially recessed grid stressed-skin construction automatic fiber placement forming method, its feature
It is：In the step (9) in hot pressing in-tank-solidification, 160 DEG C -180 DEG C of solidification temperature, hardening time 6h-8h, solidifying pressure
0.6MPa-0.8MPa。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510521039.2A CN105172161B (en) | 2015-08-21 | 2015-08-21 | It is a kind of with partially recessed grid stressed-skin construction automatic fiber placement forming method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510521039.2A CN105172161B (en) | 2015-08-21 | 2015-08-21 | It is a kind of with partially recessed grid stressed-skin construction automatic fiber placement forming method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105172161A CN105172161A (en) | 2015-12-23 |
| CN105172161B true CN105172161B (en) | 2017-07-07 |
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| CN105643955B (en) * | 2016-03-21 | 2017-12-22 | 航天材料及工艺研究所 | A kind of carbon fibre composite space optics minute surface high accuracy clone method |
| CN105690795B (en) * | 2016-03-21 | 2018-04-10 | 航天材料及工艺研究所 | A kind of semi-enclosed cavity grid stressed-skin construction composite material shaping mould and method |
| CN106515045B (en) * | 2016-12-18 | 2019-02-15 | 湖北三江航天江北机械工程有限公司 | Composite material joint skirt automatic placement molding method |
| CN108501398B (en) * | 2018-03-16 | 2020-11-20 | 航天材料及工艺研究所 | Composite material shell containing inward flanging window, forming die and forming method |
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| CN110920643B (en) * | 2019-12-18 | 2021-06-25 | 常州市新创智能科技有限公司 | Plate body structure for guide plate |
| CN112364402B (en) * | 2020-10-27 | 2022-04-08 | 成都飞机工业（集团）有限责任公司 | Method for quickly generating curved surface mesh for laying simulation step |
| CN114311728A (en) * | 2021-10-29 | 2022-04-12 | 航天材料及工艺研究所 | Negative curvature composite material grid structural member and forming method thereof |
| CN114800969B (en) * | 2022-04-27 | 2023-07-28 | 江苏铁锚玻璃股份有限公司 | Device for accelerating curing of polysulfide glue and application method thereof |
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| KR20010102186A (en) * | 1999-02-16 | 2001-11-15 | 히라이 가쯔히꼬 | Frp structure body and production method therefor |
| KR20010038599A (en) * | 1999-10-26 | 2001-05-15 | 홍완기 | Helmet body of dual structure and processing method thereof |
| US6823578B2 (en) * | 2000-11-15 | 2004-11-30 | Toyota Motor Sales, U.S.A., Inc. | One-piece closed-shape structure and method of forming same |
| CN101450533B (en) * | 2007-11-30 | 2011-09-21 | 航天材料及工艺研究所 | Carbon fiber reinforcement resin base composite material lattice structural-component conforming die and method |
| CN103817953B (en) * | 2013-12-18 | 2016-03-02 | 中航复合材料有限责任公司 | A kind of automated tape-laying manufactures the method for composite material beam |
| CN103978698B (en) * | 2014-05-21 | 2016-03-30 | 航天材料及工艺研究所 | A kind of composite material taper housing forming method of band edge frame |
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