CN106863837B - Modal circumferential stiffening rib forming method in a kind of composite material casing - Google Patents
Modal circumferential stiffening rib forming method in a kind of composite material casing Download PDFInfo
- Publication number
- CN106863837B CN106863837B CN201710078932.1A CN201710078932A CN106863837B CN 106863837 B CN106863837 B CN 106863837B CN 201710078932 A CN201710078932 A CN 201710078932A CN 106863837 B CN106863837 B CN 106863837B
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- reinforcing rib
- shell
- positioning element
- molding
- positioning
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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
- B29C70/54—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
Abstract
The present invention provides modal circumferential stiffening rib forming methods in a kind of composite material casing, the reinforcing rib includes: the first reinforcing rib and the second reinforcing rib, the described method includes: installing the first positioning element at the first position of the shell, the second positioning element is installed in the second place of the shell；First reinforcing rib is installed using first positioning element, second reinforcing rib is installed using second positioning element；It is adjusted using to docking site of the connected components to first reinforcing rib and second reinforcing rib；First positioning element and second positioning element are removed, co-curing processing is carried out to the shell and the reinforcing rib；Wherein, the reinforcing rib and the shell are identical composite material；The diameter of the shell is at least 2m, and length is at least 4m.
Description
Technical field
The invention belongs to modal circumferential stiffening rib in composites processing technology field more particularly to a kind of composite material casing at
Type method.
Background technique
Light-weight design and manufacturing technology are one of aerospace field product bearing structure primary study developing direction, multiple
There is condensation material series of advantages, alternative traditional metal material, the realizations such as low-density, high-strength and high-modulus, acid-alkali-corrosive-resisting to hold
Function and lightweight target are carried, is had broad application prospects in Aerospace Products field.
As the primary load bearing structure of composite material casing, the Forming Quality of interior modal circumferential stiffening rib is to realize shell carrying function
One of an important factor for energy.The Forming Quality of interior modal circumferential stiffening rib mainly includes the bearing strength and reinforcement of this body structure of reinforcing rib
Muscle is with the bond strength of composite material casing, and commonly interior modal circumferential stiffening rib forming technique mainly has adhesive technology and co-curing skill
Art.But bonding technology and co-curing technology are generally used for the molding of modal circumferential stiffening rib in simple structure, but compound for large scale
Easily there is mass defect with the combination interface of shell in material housing, reinforcing rib.Circumferential muscle bonding process especially in overall structure
In easily there is debonding defect；It is circumferential in overall structure simultaneously as the location conflicts of large-sized composite material shell both ends end frame
Reinforcing rib cannot achieve positioning assembly inside housings.
Summary of the invention
In view of the problems of the existing technology, the embodiment of the invention provides modal circumferential stiffening ribs in a kind of composite material casing
Forming method, when for solving in the prior art to be combined large-sized composite material shell and reinforcing rib, positioning it is inaccurate and
It is easy to fall off the technical issues of leading to cannot ensure combination interface quality.
The present invention provides modal circumferential stiffening rib forming method in a kind of composite material casing, the reinforcing rib include: first plus
Strengthening tendons and the second reinforcing rib, which comprises
First positioning element is installed at the first position of the shell, installs second in the second place of the shell
Positioning element；
First reinforcing rib is installed using first positioning element, installs described the using second positioning element
Two reinforcing ribs；
It is adjusted using to docking site of the connected components to first reinforcing rib and second reinforcing rib；
First positioning element and second positioning element are removed, the shell and the reinforcing rib are carried out solid altogether
Change processing；Wherein, the reinforcing rib and the shell are identical composite material；The diameter of the shell is at least 2m, length
At least 4m.
In above scheme, before the dismounting first positioning element and second positioning element, further includes:
Uniformly fill prepreg in fit-up gap between the shell and the reinforcing rib.
It is described to utilize to connected components to the docking site of first reinforcing rib and second reinforcing rib in above scheme
After being adjusted, further includes:
Bonding jumper is covered on the docking site, the bonding jumper is identical multiple with the shell, the reinforcing rib
Condensation material.
It is described that first positioning element is installed at the first position of the shell in above scheme, the of the shell
At two positions before the second positioning element of installation, further includes:
Using prepreg in casing forming mold laying, after molding, 100 DEG C~120 DEG C at a temperature of to the shell
Body carries out preforming.
It is described that first positioning element is installed at the first position of the shell in above scheme, the of the shell
At two positions before the second positioning element of installation, further includes:
Using prepreg in the first reinforcing rib molding die laying, after molding, 100 DEG C~120 DEG C at a temperature of into
Row is preforming；
Using prepreg in the second reinforcing rib molding die laying, after molding, 100 DEG C~120 DEG C at a temperature of into
Row is preforming.
It is described that first positioning element is installed at the first position of the shell in above scheme, the of the shell
At two positions before the second positioning element of installation, further includes:
Using prepreg docking assembly forming mold in laying, after molding, 100 DEG C~120 DEG C at a temperature of carry out
It is preforming.
It is described that first positioning element is installed at the first position of the shell in above scheme, the of the shell
At two positions before the second positioning element of installation, further includes:
Using prepreg in bonding jumper molding die laying, after molding, 100 DEG C~120 DEG C at a temperature of carry out it is pre-
Molding.
It is described that co-curing processing is carried out to the shell and the reinforcing rib in above scheme, comprising:
The shell and shown reinforcing rib are integrally vacuum-treated；
Under conditions of heating temperature is 200 DEG C~250 DEG C, pressure is no more than 1MPa, described in after vacuum processing
Co-curing handles 4~6h in shell and reinforcing rib merging autoclave.
In above scheme, the heating temperature is preferably 230 DEG C~250 DEG C；The pressure be preferably 0.4MPa~
0.6MPa。
In above scheme, one end of first positioning element is provided with the first limited block, first positioning element
The other end is provided with the second limited block；
One end on second positioning element is provided with third limited block；The other end of second positioning element is set
It is equipped with the 4th limited block.
The present invention provides modal circumferential stiffening rib forming method in a kind of composite material casing, the reinforcing rib includes: first
Reinforcing rib and the second reinforcing rib, which comprises the first positioning element is installed at the first position of the shell, described
The second place of shell is installed by the second positioning element；First reinforcing rib is installed using first positioning element, is utilized
Second positioning element installs second reinforcing rib；First reinforcing rib and described second are reinforced using to connected components
The docking site of muscle is adjusted；First positioning element and second positioning element are removed, to the shell and described
Reinforcing rib carries out co-curing processing；Wherein, the reinforcing rib and the shell are identical composite material；The diameter of the shell
At least 2m, length are at least 4m；In this way, can use when forming to large-sized composite material shell reinforcing rib
One positioning element and second positioning element carry out positioning assembly to the first reinforcing rib and the second reinforcing rib respectively, and assembly is completed
Later, co-curing processing is carried out to shell and reinforcing rib, when avoiding bonding shell and reinforcing rib using binder, easily bonded
Defect, and then ensure the quality of reinforcing rib and shell combination interface.
Detailed description of the invention
Fig. 1 is modal circumferential stiffening rib forming method flow diagram in composite material casing provided in an embodiment of the present invention；
Fig. 2 is the overall structure diagram of modal circumferential stiffening rib and shell after molding provided in an embodiment of the present invention.
Specific embodiment
In order to ensure the quality of reinforcing rib and shell combination interface, the present invention provides a kind of composite material casing inner ring
To reinforcing rib forming method, the reinforcing rib includes: the first reinforcing rib and the second reinforcing rib, which comprises in the shell
First positioning element is installed at the first position of body, the second positioning element is installed in the second place of the shell；Using institute
It states the first positioning element and first reinforcing rib is installed, second reinforcing rib is installed using second positioning element；It utilizes
Docking site of the connected components to first reinforcing rib and second reinforcing rib is adjusted；Remove first positioning region
Part and second positioning element carry out co-curing processing to the shell and the reinforcing rib；Wherein, the reinforcing rib and institute
Stating shell is identical composite material；The diameter of the shell is at least 2m, and length is at least 4m；
Technical solution of the present invention is described in further detail below by drawings and the specific embodiments.
The present embodiment provides modal circumferential stiffening rib forming methods in a kind of composite material casing, as shown in Figure 1, the method packet
It includes:
S101 installs the first positioning element at the first position of the shell, pacifies in the second place of the shell
Fill the second positioning element.
In this step, the diameter of the shell is at least 2m, and length is at least 4m.
First positioning element is installed at the first position of the shell, installs second in the second place of the shell
Before positioning element, the method also includes: utilize prepreg laying in casing forming mold, after molding, 100 DEG C~
The shell is carried out at a temperature of 120 DEG C preforming.The both ends of the casing forming mold are provided with metal baffle, baffle
Both ends are respectively arranged with the pilot hole of the pilot hole of the first positioning element, the second positioning element, in the first position of shell
Installation the first positioning element in place's installs the second positioning element in the second place of the shell.The first position of the shell
Place is the side of modal circumferential stiffening rib axis, and the second place of the shell is the other side of modal circumferential stiffening rib axis.
First positioning element and second positioning element are fixed by screw, are assemblied in shell shaping mould both ends
In metal baffle；And the first limited block and the second limited block are provided on first positioning element, first limited block and
Second limited block is located at the both ends of first positioning element, and third limit is provided on second positioning element
Block and the 4th limited block, the third limited block and the 4th limited block are located at the both ends of second positioning element,
First positioning element and second positioning element can specifically include: positioning beam.
Here, the reinforcing rib includes the first reinforcing rib and the second reinforcing rib, and first reinforcing rib and described second add
Strengthening tendons are a valve of modal circumferential stiffening rib, and the first reinforcing rib described in this way and the second reinforcing rib can then form a complete circumferential direction
Reinforcing rib, to the shell carry out it is preforming after, using prepreg in the first reinforcing rib molding die laying, after molding,
First reinforcing rib is carried out at a temperature of 100 DEG C~120 DEG C preforming；And using prepreg in the second reinforcing rib shaping mould
Have in laying, after molding, 100 DEG C~120 DEG C at a temperature of to second reinforcing rib carry out it is preforming.
After preforming to first reinforcing rib and second reinforcing rib progress, also need using prepreg to connected components
Laying in molding die, after molding, 100 DEG C~120 DEG C at a temperature of to it is described to connected components carry out it is preforming.It is wherein described
Connector can specifically include to connected components.
S102 is installed first reinforcing rib using first positioning element, is installed using second positioning element
Second reinforcing rib.
In this step, using on first positioning element the first limited block and the second limited block installation described first plus
Strengthening tendons utilize the third limited block and the 4th limited block installation second reinforcing rib on second positioning element.Wherein, institute
State the first reinforcing rib and second reinforcing rib and the shell be identical composite material, and the first reinforcing rib outer diameter at
Molded dimension is 0.5~2mm smaller than composite material casing internal diameter, preferably 1mm.
S103 is adjusted using to docking site of the connected components to first reinforcing rib and second reinforcing rib.
In this step, after installing the first reinforcing rib and the second reinforcing rib, also need to add using to connected components to described first
Strengthening tendons and the docking site of second reinforcing rib are adjusted.Described is specially banjo fixing butt jointing to connected components, described to connect
Head includes: the first connector and the second connector, and two docking sites of the first reinforcing rib and the second reinforcing rib are adjusted respectively,
First connector and the second connector are separately mounted to the docking in space of first reinforcing rib and second reinforcing rib,
And prepreg is filled in the gap of the docking site, it is ensured that first connector and second connector are fixed.
Here, first connector, the second connector and first reinforcing rib dock space with second reinforcing rib
Length it is identical, first connector, the second connector transverse interface size and first reinforcing rib and it is described second reinforce
The lateral cross-sectional dimension of muscle is consistent.
After being installed in place first connector and second connector, it need to also cover and take on the docking site
Contact pin carries out reinforcement, and the bonding jumper and the shell, first reinforcing rib and the second reinforcing rib are identical composite material.
The bonding jumper includes: the first bonding jumper and the second bonding jumper.
Reinforce after the first bonding jumper and the second bonding jumper install, and in the first bonding jumper and the first connector and first
Prepreg is filled in gap between muscle, guarantees that the first bonding jumper is fixed；In the second bonding jumper with the second connector and second
Prepreg is filled in gap between reinforcing rib, guarantees that the second bonding jumper is fixed.
Here, the transversal cross-section of first bonding jumper is identical as the lateral cross-sectional dimension of the first reinforcing rib, and described second
The lateral cross-sectional dimension of bonding jumper is identical as the lateral cross-sectional dimension of second reinforcing rib.First bonding jumper with and it is described
The length of second bonding jumper is 20mm longer than the banjo fixing butt jointing.
Further, when the prepreg in the gap between the first bonding jumper and the first connector and the first reinforcing rib is populated
Later, need to also the fit-up gap between the shell and the reinforcing rib uniformly fill the prepreg of certain number of plies, such as 10
Layer, is bonded closely with guaranteeing modal circumferential stiffening rib with composite material casing, fixed.
S104 removes first positioning element and second positioning element, to the shell and the reinforcing rib into
The processing of row co-curing.
In this step, adjusted using to docking site of the connected components to first reinforcing rib and second reinforcing rib
After section, first positioning element and second positioning element are removed, co-curing is carried out to the shell and the reinforcing rib
Processing, so that first reinforcing rib, the second reinforcing rib and the shell are integrally formed.Reinforcing rib 22 after molding and shell 21
It can be found in Fig. 2.
Specifically, co-curing processing is carried out to the shell and the reinforcing rib, comprising: by the shell and shown reinforcement
Muscle is integrally vacuum-treated；Under conditions of heating temperature is 200 DEG C~250 DEG C, pressure is no more than 1MPa, at vacuum
Co-curing handles 4~6h in the shell and reinforcing rib merging autoclave after reason.Wherein, the heating temperature is preferably
230 DEG C~250 DEG C；The pressure is preferably 0.4MPa~0.6MPa.
Embodiment two
In practical application, when being formed using the method that embodiment one provides to composite material casing modal circumferential stiffening rib,
It is specific as follows:
First positioning element is installed at the first position of the shell, installs second in the second place of the shell
Before positioning element, the method also includes: prepreg laying in casing forming mold is utilized, after molding, in 110 DEG C of temperature
The shell is carried out under degree preforming.The both ends of the casing forming mold are provided with metal baffle, the both ends difference of baffle
It is provided with the pilot hole of the first positioning element, the pilot hole of the second positioning element, for the installation the at the first position of shell
One positioning element installs the second positioning element in the second place of the shell.Wherein, it is at the first position of the shell
The side of modal circumferential stiffening rib axis, the second place of the shell are the other side of modal circumferential stiffening rib axis.The shell
Diameter is 3m, length 5m.
First positioning element and second positioning element are fixed by screw, are assemblied in shell shaping mould both ends
In metal baffle；And the first limited block and the second limited block are provided on first positioning element, second positioning element
On be provided with third limited block and the 4th limited block, first positioning element and second positioning element specifically can wrap
It includes: positioning beam.
Here, the reinforcing rib includes the first reinforcing rib and the second reinforcing rib, and first reinforcing rib and described second add
Strengthening tendons are a valve of modal circumferential stiffening rib, and the first reinforcing rib described in this way and the second reinforcing rib can then form a complete circumferential direction
Reinforcing rib, to the shell carry out it is preforming after, using prepreg in the first reinforcing rib molding die laying, after molding,
First reinforcing rib is carried out at a temperature of 110 DEG C preforming；And it is spread in the second reinforcing rib molding die using prepreg
Layer, after molding, 110 DEG C at a temperature of to second reinforcing rib carry out it is preforming.
After preforming to first reinforcing rib and second reinforcing rib progress, also need using prepreg to connected components
Laying in molding die, after molding, 110 DEG C at a temperature of to it is described to connected components carry out it is preforming.The wherein docking group
Part can specifically include connector.
After the first reinforcing rib and preforming the second reinforcing rib, using on first positioning element the first limited block and
Second limited block installs first reinforcing rib, utilizes the third limited block and the 4th limited block peace on second positioning element
Fill second reinforcing rib.Wherein, first reinforcing rib and second reinforcing rib and the shell are identical composite wood
Material, and the first reinforcing rib outer diameter compact dimensions are 1mm smaller than composite material casing internal diameter.
After installing the first reinforcing rib and the second reinforcing rib, also need using to connected components to first reinforcing rib with it is described
The docking site of second reinforcing rib is adjusted.Described is specially banjo fixing butt jointing to connected components, and the banjo fixing butt jointing includes: first
Connector and the second connector are respectively adjusted two docking sites of the first reinforcing rib and the second reinforcing rib, by described first
Connector and the second connector are separately mounted to the docking in space of first reinforcing rib and second reinforcing rib, and described right
Prepreg is filled in the gap of socket part position, it is ensured that first connector and second connector are fixed.
Here, first connector, the second connector and first reinforcing rib dock space with second reinforcing rib
Length it is identical, first connector, the second connector transverse interface size and first reinforcing rib and it is described second reinforce
The lateral cross-sectional dimension of muscle is consistent.
After being installed in place first connector and second connector, it need to also cover and take on the docking site
Contact pin carries out reinforcement, and the bonding jumper and the shell, first reinforcing rib and the second reinforcing rib are identical composite material.
The bonding jumper includes: the first bonding jumper and the second bonding jumper.
Reinforce after the first bonding jumper and the second bonding jumper install, and in the first bonding jumper and the first connector and first
Prepreg is filled in gap between muscle, guarantees that the first bonding jumper is fixed；In the second bonding jumper with the second connector and second
Prepreg is filled in gap between reinforcing rib, guarantees that the second bonding jumper is fixed.
Here, the transversal cross-section of first bonding jumper is identical as the lateral cross-sectional dimension of the first reinforcing rib, and described second
The lateral cross-sectional dimension of bonding jumper is identical as the lateral cross-sectional dimension of second reinforcing rib.First bonding jumper with and it is described
The length of second bonding jumper is 20mm longer than the banjo fixing butt jointing.
Further, when the prepreg in the gap between the first bonding jumper and the first connector and the first reinforcing rib is populated
Later, need to also the fit-up gap between the shell and the reinforcing rib uniformly fill the prepreg of certain number of plies, such as 10
Layer, is bonded closely with guaranteeing modal circumferential stiffening rib with composite material casing, fixed.
After docking site of the connected components to first reinforcing rib and second reinforcing rib is adjusted, remove
First positioning element and second positioning element carry out co-curing processing to the shell and the reinforcing rib, so that
First reinforcing rib, the second reinforcing rib and the shell are integrally formed.
Specifically, co-curing processing is carried out to the shell and the reinforcing rib, comprising: by the shell and shown reinforcement
Muscle is integrally vacuum-treated；Under conditions of heating temperature is 250 DEG C, pressure is 0.5MPa, described in after vacuum processing
Co-curing handles 4h in shell and reinforcing rib merging autoclave.
Embodiment three
In practical application, another composite material casing modal circumferential stiffening rib is formed using the method that embodiment one provides
When, it is specific as follows:
First positioning element is installed at the first position of the shell, installs second in the second place of the shell
Before positioning element, the method also includes: prepreg laying in casing forming mold is utilized, after molding, in 120 DEG C of temperature
The shell is carried out under degree preforming.The both ends of the casing forming mold are provided with metal baffle, the both ends difference of baffle
It is provided with the pilot hole of the first positioning element, the pilot hole of the second positioning element, for the installation the at the first position of shell
One positioning element installs the second positioning element in the second place of the shell.Wherein, it states at the first position of shell as ring
To the side of reinforcing rib axis, the second place of the shell is the other side of modal circumferential stiffening rib axis.The shell it is straight
Diameter is 4m, length 6m.
First positioning element and second positioning element are fixed by screw, are assemblied in shell shaping mould both ends
In metal baffle；And the first limited block and the second limited block are provided on first positioning element, second positioning element
On be provided with third limited block and the 4th limited block, first positioning element and second positioning element specifically can wrap
It includes: positioning beam.
Here, the reinforcing rib includes the first reinforcing rib and the second reinforcing rib, and first reinforcing rib and described second add
Strengthening tendons are a valve of modal circumferential stiffening rib, and the first reinforcing rib described in this way and the second reinforcing rib can then form a complete circumferential direction
Reinforcing rib, to the shell carry out it is preforming after, using prepreg in the first reinforcing rib molding die laying, after molding,
First reinforcing rib is carried out at a temperature of 120 DEG C preforming；And it is spread in the second reinforcing rib molding die using prepreg
Layer, after molding, 120 DEG C at a temperature of to second reinforcing rib carry out it is preforming.
After preforming to first reinforcing rib and second reinforcing rib progress, also need using prepreg to connected components
Laying in molding die, after molding, 120 DEG C at a temperature of to it is described to connected components carry out it is preforming.The wherein docking group
Part can specifically include connector.
After the first reinforcing rib and preforming the second reinforcing rib, using on first positioning element the first limited block and
Second limited block installs first reinforcing rib, utilizes the third limited block and the 4th limited block peace on second positioning element
Fill second reinforcing rib.Wherein, first reinforcing rib and second reinforcing rib and the shell are identical composite wood
Material, and the first reinforcing rib outer diameter compact dimensions are 1.5mm smaller than composite material casing internal diameter.
After installing the first reinforcing rib and the second reinforcing rib, also need using to connected components to first reinforcing rib with it is described
The docking site of second reinforcing rib is adjusted.Described is specially banjo fixing butt jointing to connected components, and the banjo fixing butt jointing includes: first
Connector and the second connector are respectively adjusted two docking sites of the first reinforcing rib and the second reinforcing rib, by described first
Connector and the second connector are separately mounted to the docking in space of first reinforcing rib and second reinforcing rib, and described right
Prepreg is filled in the gap of socket part position, it is ensured that first connector and second connector are fixed.
Here, first connector, the second connector and first reinforcing rib dock space with second reinforcing rib
Length it is identical, first connector, the second connector transverse interface size and first reinforcing rib and it is described second reinforce
The lateral cross-sectional dimension of muscle is consistent.
After being installed in place first connector and second connector, it need to also cover and take on the docking site
Contact pin carries out reinforcement, and the bonding jumper and the shell, first reinforcing rib and the second reinforcing rib are identical composite material.
The bonding jumper includes: the first bonding jumper and the second bonding jumper.
Reinforce after the first bonding jumper and the second bonding jumper install, and in the first bonding jumper and the first connector and first
Prepreg is filled in gap between muscle, guarantees that the first bonding jumper is fixed；In the second bonding jumper with the second connector and second
Prepreg is filled in gap between reinforcing rib, guarantees that the second bonding jumper is fixed.
Here, the transversal cross-section of first bonding jumper is identical as the lateral cross-sectional dimension of the first reinforcing rib, and described second
The lateral cross-sectional dimension of bonding jumper is identical as the lateral cross-sectional dimension of second reinforcing rib.First bonding jumper with and it is described
The length of second bonding jumper is 20mm longer than the banjo fixing butt jointing.
Further, when the prepreg in the gap between the first bonding jumper and the first connector and the first reinforcing rib is populated
Later, need to also the fit-up gap between the shell and the reinforcing rib uniformly fill the prepreg of certain number of plies, such as 10
Layer, is bonded closely with guaranteeing modal circumferential stiffening rib with composite material casing, fixed.
After docking site of the connected components to first reinforcing rib and second reinforcing rib is adjusted, remove
First positioning element and second positioning element carry out co-curing processing to the shell and the reinforcing rib, so that
First reinforcing rib, the second reinforcing rib and the shell are integrally formed.
Specifically, co-curing processing is carried out to the shell and the reinforcing rib, comprising: by the shell and shown reinforcement
Muscle is integrally vacuum-treated；Under conditions of heating temperature is 230 DEG C, pressure is 0.6MPa, described in after vacuum processing
Co-curing handles 6h in shell and reinforcing rib merging autoclave.
One or more embodiments of the invention has the benefit that
The present invention provides modal circumferential stiffening rib forming method in a kind of composite material casing, the reinforcing rib includes: first
Reinforcing rib and the second reinforcing rib, which comprises the first positioning element is installed at the first position of the shell, described
The second place of shell is installed by the second positioning element；First reinforcing rib is installed using first positioning element, is utilized
Second positioning element installs second reinforcing rib；First reinforcing rib and described second are reinforced using to connected components
The docking site of muscle is adjusted；First positioning element and second positioning element are removed, to the shell and described
Reinforcing rib carries out co-curing processing；Wherein, the reinforcing rib and the shell are identical composite material；The diameter of the shell
At least 2m, length are at least 4m；In this way, can use when forming to large-sized composite material shell reinforcing rib
One positioning element and second positioning element carry out positioning assembly to the first reinforcing rib and the second reinforcing rib respectively, and assembly is completed
Later, co-curing processing is carried out to shell and reinforcing rib, when avoiding bonding shell and reinforcing rib using binder, easily bonded
Defect, and then ensure the quality of reinforcing rib and shell combination interface.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention, it is all
Made any modifications, equivalent replacements, and improvements etc. within the spirit and principles in the present invention, should be included in protection of the invention
Within the scope of.
Claims (10)
1. modal circumferential stiffening rib forming method in a kind of composite material casing, which is characterized in that the reinforcing rib includes: the first reinforcement
Muscle and the second reinforcing rib, which comprises
First positioning element is installed at the first position of the shell, the second positioning of installation in the second place of the shell
Component；
First reinforcing rib is installed using first positioning element, is added using second positioning element installation described second
Strengthening tendons；
It is adjusted using to docking site of the connected components to first reinforcing rib and second reinforcing rib；
First positioning element and second positioning element are removed, the shell and the reinforcing rib are carried out at co-curing
Reason；Wherein, the reinforcing rib and the shell are identical composite material；The diameter of the shell is at least 2m, and length is at least
For 4m.
2. the method as described in claim 1, which is characterized in that described to remove first positioning element and second positioning
Before component, further includes:
Uniformly fill prepreg in fit-up gap between the shell and the reinforcing rib.
3. the method as described in claim 1, which is characterized in that it is described using to connected components to first reinforcing rib with it is described
After the docking site of second reinforcing rib is adjusted, further includes:
Bonding jumper is covered on the docking site, the bonding jumper and the shell, the reinforcing rib are identical composite wood
Material.
4. the method as described in claim 1, which is characterized in that first positioning of the installation at the first position of the shell
Component, before the second positioning element is installed in the second place of the shell, further includes:
Using prepreg in casing forming mold laying, after molding, 100 DEG C~120 DEG C at a temperature of to the shell into
Row is preforming.
5. the method as described in claim 1, which is characterized in that first positioning of the installation at the first position of the shell
Component, before the second positioning element is installed in the second place of the shell, further includes:
Using prepreg in the first reinforcing rib molding die laying, after molding, 100 DEG C~120 DEG C at a temperature of carry out it is pre-
Molding；
Using prepreg in the second reinforcing rib molding die laying, after molding, 100 DEG C~120 DEG C at a temperature of carry out it is pre-
Molding.
6. the method as described in claim 1, which is characterized in that first positioning of the installation at the first position of the shell
Component, before the second positioning element is installed in the second place of the shell, further includes:
Using prepreg docking assembly forming mold in laying, after molding, 100 DEG C~120 DEG C at a temperature of carry out in advance at
Type.
7. the method as described in claim 1, which is characterized in that first positioning of the installation at the first position of the shell
Component, before the second positioning element is installed in the second place of the shell, further includes:
Using prepreg in bonding jumper molding die laying, after molding, 100 DEG C~120 DEG C at a temperature of carry out it is preforming.
8. the method as described in claim 1, which is characterized in that described to be carried out at co-curing to the shell and the reinforcing rib
Reason, comprising:
The shell and the reinforcing rib are integrally vacuum-treated；
Under conditions of heating temperature is 200 DEG C~250 DEG C, pressure is no more than 1MPa, by the shell after vacuum processing
And co-curing handles 4~6h in the reinforcing rib merging autoclave.
9. method according to claim 8, which is characterized in that the heating temperature is preferably 230 DEG C~250 DEG C；The pressure
Power is preferably 0.4MPa~0.6MPa.
10. the method as described in claim 1, which is characterized in that one end of first positioning element is provided with the first limit
The other end of block, first positioning element is provided with the second limited block；
One end on second positioning element is provided with third limited block；The other end of second positioning element is provided with
4th limited block.
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| CN110712382B (en) * | 2019-10-11 | 2021-11-26 | 上海复合材料科技有限公司 | Rear cover device suitable for space-borne full-composite camera and integral forming method |
| CN114603900A (en) * | 2022-03-02 | 2022-06-10 | 北京玻钢院复合材料有限公司 | Composite external pressure shell reinforcement structure and forming method thereof |
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| CN101628481A (en) * | 2009-06-01 | 2010-01-20 | 中国航空工业集团公司北京航空制造工程研究所 | Forming mould of large-sized composite material-made reinforcing wall plate by vacuum assisted resin infusion |
| CN102935721A (en) * | 2012-11-13 | 2013-02-20 | 中国科学院宁波材料技术与工程研究所 | Reinforcing sheet design and reinforcing method for fiber composite material opening workpiece |
| CN103496175A (en) * | 2013-10-24 | 2014-01-08 | 连云港中复连众复合材料集团有限公司 | Method for manufacturing reinforcing rib formed in an integrated winding mode and applied to glass reinforced plastic chimney flue |
| EP2727711A1 (en) * | 2012-11-01 | 2014-05-07 | The Boeing Company | Composite radius fillers and methods of forming the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US9731453B2 (en) * | 2015-03-04 | 2017-08-15 | The Boeing Company | Co-curing process for the joining of composite structures |
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| CN101628481A (en) * | 2009-06-01 | 2010-01-20 | 中国航空工业集团公司北京航空制造工程研究所 | Forming mould of large-sized composite material-made reinforcing wall plate by vacuum assisted resin infusion |
| EP2727711A1 (en) * | 2012-11-01 | 2014-05-07 | The Boeing Company | Composite radius fillers and methods of forming the same |
| CN102935721A (en) * | 2012-11-13 | 2013-02-20 | 中国科学院宁波材料技术与工程研究所 | Reinforcing sheet design and reinforcing method for fiber composite material opening workpiece |
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