CN108819297B - Integrated curing method for three-dimensional braided tubular preform and end joint - Google Patents
Integrated curing method for three-dimensional braided tubular preform and end joint Download PDFInfo
- Publication number
- CN108819297B CN108819297B CN201810395398.1A CN201810395398A CN108819297B CN 108819297 B CN108819297 B CN 108819297B CN 201810395398 A CN201810395398 A CN 201810395398A CN 108819297 B CN108819297 B CN 108819297B
- Authority
- CN
- China
- Prior art keywords
- dimensional
- composite material
- connecting column
- end joint
- tubular preform
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/74—Moulding material on a relatively small portion of the preformed part, e.g. outsert moulding
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Moulding By Coating Moulds (AREA)
- Woven Fabrics (AREA)
Abstract
The invention provides an integrated curing method of a three-dimensional braided tubular preform and an end joint, which comprises the following steps: a section of connecting column integrally extends out of the inner side end of the end joint; secondly, the connecting column of the end joint is used as a core mold, and a three-dimensional woven tubular preform is woven on the outer side surface of the connecting column by a three-dimensional weaving process; and thirdly, putting the end joint and the three-dimensional braided tubular preformed body into a mould together, and curing the end joint and the three-dimensional braided tubular preformed body into an integral structure through a composite material forming process. The method for manufacturing the integrally solidified connecting joint of the composite material is convenient for batch production of the connecting joint with a complex structure, can achieve high bearing capacity of the composite material pipe which is difficult to realize by other processes, and can be conveniently used for manufacturing high-performance composite material structural parts bearing loads such as tension, compression, bending, torsion and the like, such as pull rods, support rods, torsion bars, beams, transmission shafts and the like.
Description
Technical Field
The invention relates to an integrated curing method of a three-dimensional braided tubular preform and an end joint.
Background
Composite structural members are generally bonded into an integral composite structure by gluing, screwing, riveting and other processes. Up to now, composite material structural members, particularly tie rods, brace rods, torsion bars, beams, transmission shafts, etc., are usually manufactured by processing composite material pipes and matched joints respectively, and then performing glue joint, or glue screw and glue rivet connection between the joints and the composite material pipes, so as to obtain corresponding composite material structural members. In practical application, a process of curing and co-bonding a metal embedded part and a composite material part also appears, but the process cannot bear larger load, so that how to manufacture a tubular structural part which can fully exert the high bearing capacity of the composite material is always a hot point of attention in the industry. It is generally considered that only the glue layer on the interface of the glue joint transfers the load, and the non-uniform distribution of the shear strength and stress of the glue layer is the main factor limiting the bearing capacity of the pipe. The connection effect of the glue screw and the glue rivet is obviously better than that of simple screw connection and riveting, but the bearing limit of the glue screw and the glue rivet generally does not exceed the gluing limit.
Due to the special fiber internal structure of the three-dimensional woven composite material, the three-dimensional woven composite material has certain unique performance advantages, such as stronger designability, no interlayer damage form, impact resistance, damage resistance, long fatigue life and the like, is particularly suitable for bearing loads such as alternation, impact, vibration, thermal shock, high thermal gradient and the like, provides a space for the expansion and application of the composite material, and can exert the advantages of the composite material to a greater extent.
The excellent mechanical properties of the three-dimensional woven composite material also bring certain obstacles to the design and manufacture of the connection structure. For example: in a high-load bearing component, if a structural component with a joint which is integrally woven in a three-dimensional mode is adopted, although the performance advantage is outstanding, a series of problems of sharp increase in cost, long construction period, low production efficiency and the like are caused, and the application of the material and the structure thereof is influenced. The problems can be solved by manufacturing the joint connecting piece by metal or other materials, but how to connect the joint connecting piece still remains the problem to be solved, and if the traditional processes of gluing, screwing and riveting or gluing, screwing, gluing and riveting and the like are still used, besides the original problems, the damage of an internal fiber structure can be caused, the defects and the damages are caused, the difficulty and the cost of the subsequent connecting process are increased, and the like.
Disclosure of Invention
The invention aims to: the method for integrally curing the three-dimensional braided tubular preform and the end joint is provided, and the technical problems in the prior art are solved.
In order to achieve the purpose, the invention adopts the technical scheme that:
an integrated curing method for a three-dimensional braided tubular preform and an end joint is characterized by comprising the following steps:
the end joint is composed of at least two parts, one part is a connecting column which is connected with the three-dimensional braided tubular preformed body and extends out integrally from the inner side end, and the other part is an outer connecting section for connecting with other structures;
secondly, the connecting column of the end joint is used as a part of the core mould, and a three-dimensional weaving tubular preformed body is woven on the outer side surface of the core mould by a three-dimensional weaving process;
and thirdly, putting the end joint and the three-dimensional braided tubular preformed body into a mould together, and curing the end joint and the three-dimensional braided tubular preformed body into an integral structure through a composite material forming process.
The integrated curing method of the three-dimensional braided tubular preform and the end joint comprises the following steps: the end joint is made of metal, ceramic, high polymer material or composite material.
The integrated curing method of the three-dimensional braided tubular preform and the end joint comprises the following steps: the end fitting is made by a process of machining, die casting, stamping, injection molding, compounding, 3D printing or sintering.
The integrated curing method of the three-dimensional braided tubular preform and the end joint comprises the following steps: the external connecting section of the end joint is a single lug, a double lug, a universal joint fork lug, a hollow tube, a solid column, a flange, an external threaded rod or an internal threaded hole.
The integrated curing method of the three-dimensional braided tubular preform and the end joint comprises the following steps: the cross-sectional shape of the connecting column of the end fitting is a solid or hollow circular, square or other geometric shape.
The integrated curing method of the three-dimensional braided tubular preform and the end joint comprises the following steps: the outer surface of the connecting column is of uniform or variable cross-section, such as single taper, double taper, multi-taper or arc.
The integrated curing method of the three-dimensional braided tubular preform and the end joint comprises the following steps: the outer surface of the connecting column is formed with a concave-convex structure.
The integrated curing method of the three-dimensional braided tubular preform and the end joint comprises the following steps: the concave-convex structure is a thread, a spine, a barb, a salient point, an annular groove and/or a longitudinal groove.
The integrated curing method of the three-dimensional braided tubular preform and the end joint comprises the following steps: the inner surface of the three-dimensional woven tubular pre-forming body is connected with the outer surface of the connecting column, or the outer surface of the three-dimensional woven tubular pre-forming body is connected with the inner surface of the connecting column.
The integrated curing method of the three-dimensional braided tubular preform and the end joint comprises the following steps: and winding high-performance fiber yarns or cloth belts outside the section where the three-dimensional braided tubular preformed body is connected with the connecting column, and then curing the three-dimensional braided tubular preformed body into an integral structure by using a composite material forming process.
The integrated curing method of the three-dimensional braided tubular preform and the end joint comprises the following steps: the composite material forming process is a composite material liquid forming process or a composite material vapor deposition process or a composite material liquid deposition process.
Compared with the prior art, the invention has the beneficial effects that: the method for manufacturing the integrally solidified connecting joint of the composite material is convenient for batch production of the connecting joint with a complex structure, can achieve high bearing capacity which is difficult to realize by other processes, and can be conveniently used for manufacturing high-performance composite material structural members bearing various load forms such as tension, compression, bending, torsion and the like, such as pull rods, support rods, torsion bars, beams, transmission shafts and the like.
Drawings
FIG. 1 is an integral curing structure of a tie joint with a three-dimensional woven tubular preform using the method of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is an integral curing structure of a flange with a three-dimensional woven tubular preform utilizing the method of the present invention;
fig. 4 is a sectional view of fig. 3.
Description of reference numerals: a tie rod joint 1; a connecting column 11; externally connecting a complex structure section 12; a three-dimensional braided tubular preform 2; a flange 3; a connecting column 31; the concave-convex structure 311; circumscribing the complex structure section 32.
Detailed Description
The invention provides an integrated curing method of a three-dimensional braided tubular preform and an end joint, which comprises the following steps:
a section of connecting column integrally extends out of the inner side end of the end joint;
secondly, the connecting column of the end joint is used as a part of a core mould, and a three-dimensional woven tubular preformed body is woven on the outer side surface of the core mould by a three-dimensional weaving process;
and thirdly, putting the end joint and the three-dimensional braided tubular preformed body into a mould together, and curing the end joint and the three-dimensional braided tubular preformed body into an integral structure through a composite material forming process.
The main improvement of the invention is that the end joint is divided into an external complex structure section positioned at the outer end and a connecting column positioned at the inner end, and the end joint can be made of metal, ceramic, high polymer materials or composite materials, so that the method can be used for quickly and massively producing the three-dimensional braided composite material by the original processes of machining, die casting, stamping, injection molding, compounding, 3D printing or sintering and the like, and the connecting column is favorable for firmly connecting with a three-dimensional braided composite material pipe and transferring load, is easy to achieve mass production, and simultaneously maintains the performance advantages of a composite material structural member.
It should be noted that, with the method of the present invention, the step of forming the circumscribed complex structural section of the end fitting may be completed before or after any of the first step, the second step, and the third step.
As shown in fig. 1 and 2, the structure of the tie rod joint is schematically illustrated by using the method of the present invention to integrate and solidify the tie rod joint with the three-dimensional woven tubular preform 2, the tie rod joint 1 is a conical thread insert with an internal thread hole, wherein the internal thread hole forms the externally connected complex structure section 12, the outer surface of the conical thread insert forms the connecting post 11, the three-dimensional woven tubular preform 2 is woven on the outer surface of the conical thread insert, and is solidified into the tie rod with an integrated structure by a composite material forming process, when the tie rod is used for a structural member, a fisheye screw is firstly screwed into the internal thread hole, the length is adjusted and fixed, and then the tie rod is connected with other structures by.
Wherein: since the conical thread insert is made of metal and has an outer annular surface that is thickened toward the inner side end, the tensile strength between the conical thread insert and the three-dimensional woven tubular preform 2 can be enhanced.
As shown in fig. 3 and 4, the present invention is a schematic view of an integrated curing structure of a flange and a three-dimensional woven tubular preform 2 by using the method of the present invention, the flange 3 includes a flange piece and a flange tube which are integrally connected, the flange piece is located at an outer end to form the external complex structure section 32, the flange tube forms the connecting column 31, and the three-dimensional woven tubular preform 2 is woven on a core mold formed by an outer surface of the flange tube and is cured into an integrated structure by a composite material molding process.
Wherein: the outer annular surface of the flange pipe is formed with a concave-convex structure 311 (which can be a thread, a spine, a barb, a salient point, an annular groove and/or a longitudinal groove) which can enhance the combination and load transfer capacity between the flange pipe and the three-dimensional braided tubular preform 2.
The application of the present invention has been described above only by taking the conventional components such as the tie rod joint 1 and the flange as examples, but the application field of the present invention is not limited thereto.
In the above embodiment:
the end fitting may be made by machining, die casting, stamping, injection moulding, compounding, 3D printing or sintering processes.
The external connecting section of the end joint can be a single lug, a double lug, a universal joint fork lug, a hollow tube, a solid column, a flange, an external threaded rod or an internal threaded hole.
The cross-sectional shape of the connecting column 31 of the end fitting may be solid or hollow circular, square or other geometric shapes.
The outer surface of the connecting column 31 may be of constant or varying cross-section, such as single taper, double taper, multiple taper or arcuate.
The inner surface of the three-dimensional woven tubular preform 2 may be in contact with the outer surface of the connecting column 31, or the outer surface of the three-dimensional woven tubular preform 2 may be in contact with the inner surface of the connecting column 31.
And high-performance fiber yarns or cloth belts can be wound outside the section of the three-dimensional braided tubular preform 2 connected with the connecting column 31 and then cured into an integral structure by a composite material forming process.
The above-mentioned composite material forming process is generally most commonly a composite material liquid forming process, but those skilled in the art can further develop other integral curing methods besides the liquid forming process, such as a vapor deposition process, a liquid deposition process, and the like.
The integral curing method for the three-dimensional braided tubular preform and the end joint in the invention can be also used for integral curing of other forms of three-dimensional braided preforms, such as plates, profiles and end joints.
Claims (7)
1. An integrated curing method for a three-dimensional braided tubular preform and an end joint is characterized by comprising the following steps:
the end joint is composed of at least two parts, one part is a connecting column which is connected with the three-dimensional braided tubular preformed body and extends out integrally from the inner side end, and the other part is an outer connecting section for connecting with other structures;
secondly, the connecting column of the end joint is used as a part of the core mould, and a three-dimensional weaving tubular preformed body is woven on the outer side surface of the core mould by a three-dimensional weaving process;
thirdly, putting the end joint and the three-dimensional braided tubular preformed body into a mould together, and curing the end joint and the three-dimensional braided tubular preformed body into an integral structure through a composite material forming process;
wherein, the external connecting section of the end joint is a single lug, a double lug, a universal joint fork lug, a hollow tube, a solid column, a flange, an external threaded rod or an internal threaded hole;
wherein, the outer surface of the connecting column is formed with a concave-convex structure which is a thread;
the three-dimensional woven tubular preform is characterized in that a section, connected with the connecting column, of the three-dimensional woven tubular preform is wound with high-performance fiber yarns or cloth belts, and then the three-dimensional woven tubular preform is solidified into an integral structure through a composite material forming process; the composite material forming process is a composite material liquid forming process or a composite material vapor deposition process or a composite material liquid deposition process.
2. The method of integrally curing a three-dimensional woven tubular preform with an end fitting according to claim 1, wherein: the end joint is made of metal, ceramic, high polymer material or composite material.
3. The method of integrally curing a three-dimensional woven tubular preform with an end fitting according to claim 1, wherein: the end fitting is made by a process of machining, die casting, stamping, injection molding, compounding, 3D printing or sintering.
4. The method of integrally curing a three-dimensional woven tubular preform with an end fitting according to claim 1, wherein: the cross-sectional shape of the connecting column of the end fitting is a solid or hollow round or square.
5. The method of integrally curing a three-dimensional woven tubular preform with an end fitting according to claim 1, wherein: the outer surface of the connecting column is of uniform or variable cross-section.
6. The method of integrally curing a three-dimensional woven tubular preform with an end fitting according to claim 1, wherein: the outer surface of the connecting column is in the shape of single taper, double taper, multi-taper or arc.
7. The method of integrally curing a three-dimensional woven tubular preform with an end fitting according to claim 1, wherein: the inner surface of the three-dimensional woven tubular pre-forming body is connected with the outer surface of the connecting column, or the outer surface of the three-dimensional woven tubular pre-forming body is connected with the inner surface of the connecting column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810395398.1A CN108819297B (en) | 2018-04-27 | 2018-04-27 | Integrated curing method for three-dimensional braided tubular preform and end joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810395398.1A CN108819297B (en) | 2018-04-27 | 2018-04-27 | Integrated curing method for three-dimensional braided tubular preform and end joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108819297A CN108819297A (en) | 2018-11-16 |
| CN108819297B true CN108819297B (en) | 2021-03-02 |
Family
ID=64154880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810395398.1A Expired - Fee Related CN108819297B (en) | 2018-04-27 | 2018-04-27 | Integrated curing method for three-dimensional braided tubular preform and end joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108819297B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3296328B2 (en) * | 1999-05-11 | 2002-06-24 | 株式会社豊田自動織機 | Fiber reinforced plastic pipe |
| FR2926118B1 (en) * | 2008-01-04 | 2010-01-29 | Snecma | COMPOSITE FLANGE WITH MACHINING PART. |
| FR2937396B1 (en) * | 2008-10-17 | 2011-05-20 | Hutchinson | PIPING SYSTEM FOR FLUID TRANSFER PIPING OF AERIAL OR SPACE VEHICLE, METHOD OF MANUFACTURE AND AERONAUTICAL STRUCTURE INCORPORATING IT |
| CN103712049A (en) * | 2012-09-28 | 2014-04-09 | 张长增 | Fiber composite material bearing rod or pipe and forming method thereof |
| CN104110352B (en) * | 2014-06-19 | 2017-01-11 | 连云港中复连众复合材料集团有限公司 | Method for manufacturing root portion of fan blade with square embedded bolt sleeve |
| JP6540085B2 (en) * | 2015-02-20 | 2019-07-10 | 東レ株式会社 | Propeller shaft |
| CN106985417A (en) * | 2017-04-18 | 2017-07-28 | 浙江理工大学 | A kind of carbon fiber weaves the interface connecting method of multiple tube |
-
2018
- 2018-04-27 CN CN201810395398.1A patent/CN108819297B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN108819297A (en) | 2018-11-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101780511B1 (en) | Method for manufacturing composite connecting rods, and connecting rods produced according to the method | |
| US3495494A (en) | Threaded plastic member with a reinforced thread | |
| TW202116536A (en) | Method for producing a positive-locking load application for rod-shaped fiber composite structures, and the design thereof | |
| CN112644039A (en) | Large-opening composite material shell, forming method and forming tool | |
| CN108819297B (en) | Integrated curing method for three-dimensional braided tubular preform and end joint | |
| US20080193202A1 (en) | Turnbuckle and Method for Making the Same | |
| CN212400409U (en) | Variable cross-section fiber reinforced composite pipe | |
| CN105464291A (en) | Bursting reinforcement bar connecting sleeve | |
| CN112009001A (en) | Variable cross-section fiber reinforced composite material pipe and pipe-die integrated forming method | |
| CN105414227A (en) | Molding module and molding device for bulb connecting pipe | |
| EP2647481B1 (en) | Tool and method for manufacturing of fibre composite compression coil springs. | |
| CN215397021U (en) | Big open-ended combined material casing and shaping frock | |
| CN201535037U (en) | Cold extrusion formed steel bar connecting sleeve with straight threads | |
| CN208468854U (en) | The integrated consolidated structures of three-dimensional woven tube preform and end-fitting | |
| US4942904A (en) | Hollow section, in particular a tube, of long fibre reinforced plastic | |
| CN202158100U (en) | Flange made of composite material | |
| JP6531920B2 (en) | Coupling structure of fiber reinforced plastic structural member and processing method of the coupling portion | |
| CN113427794A (en) | Three-dimensional braided composite elbow composite forming method | |
| US20180319103A1 (en) | Composite shaft | |
| US20150231836A1 (en) | Method for manufacturing composite connecting rods and connecting rods produced according to the method | |
| CN104060399B (en) | A kind of cross section is the stereo weaving method of order font pipe fitting | |
| CN214727874U (en) | Novel carbon fiber spoke | |
| JP2019031080A (en) | A forming die for press-molding a workpiece and a method for manufacturing a forming die for pressure-molding a workpiece | |
| CN211222121U (en) | Winding die for composite material transmission shaft tube | |
| CN220132492U (en) | Three-dimensional braiding structure of large-diameter solid rod-shaped prefabricated body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210302 |