CN110901103A - Manufacturing method of low-cost modular composite material forming tool - Google Patents
Manufacturing method of low-cost modular composite material forming tool Download PDFInfo
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- CN110901103A CN110901103A CN201911166145.8A CN201911166145A CN110901103A CN 110901103 A CN110901103 A CN 110901103A CN 201911166145 A CN201911166145 A CN 201911166145A CN 110901103 A CN110901103 A CN 110901103A
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- 239000002131 composite material Substances 0.000 title claims abstract description 63
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 52
- 239000000463 material Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000012545 processing Methods 0.000 claims abstract description 6
- 238000000465 moulding Methods 0.000 claims description 20
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 13
- 239000004917 carbon fiber Substances 0.000 claims description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 11
- 238000002955 isolation Methods 0.000 claims description 10
- 239000004744 fabric Substances 0.000 claims description 9
- 239000000758 substrate Substances 0.000 claims description 9
- 230000007774 longterm Effects 0.000 claims description 8
- 239000002313 adhesive film Substances 0.000 claims description 6
- 229920001187 thermosetting polymer Polymers 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 239000011159 matrix material Substances 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 4
- 239000004412 Bulk moulding compound Substances 0.000 claims description 2
- 239000003677 Sheet moulding compound Substances 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 230000013011 mating Effects 0.000 claims 8
- 229920005989 resin Polymers 0.000 claims 3
- 239000011347 resin Substances 0.000 claims 3
- 238000005538 encapsulation Methods 0.000 claims 1
- 238000001723 curing Methods 0.000 abstract description 8
- 238000012827 research and development Methods 0.000 abstract description 6
- 238000009825 accumulation Methods 0.000 abstract description 2
- 238000012937 correction Methods 0.000 abstract 1
- 239000000805 composite resin Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910001374 Invar Inorganic materials 0.000 description 1
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011197 carbon fiber sheet molding compound Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- B29C70/04—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
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3842—Manufacturing moulds, e.g. shaping the mould surface by machining
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
一种低成本模块化复合材料成型工装制造方法，所属工装制造技术领域，制作步骤包含：(1)工装框架的制作，(2)工装型面背衬的制作，(3)工装型面配合面的制作，(4)工装型面的制作，(5)工装型面的粘贴；本发明方法可以省略母模的制造过程，以少量的工装框架结构配合多种不同型面轮廓的工装型面，通过材料的铺叠与堆积、固化和加工以完成复合材料工装的制造、更换及更正，适用于具有高型面及尺寸精度要求的小批量复合材料产品研发阶段的成型工装制造过程，能够大幅度节省研发成本，缩短研发周期。A low-cost modular composite material forming tooling manufacturing method belongs to the technical field of tooling manufacturing. (4) making the tooling profile, (5) pasting the tooling profile; the method of the present invention can omit the manufacturing process of the master mold, and use a small amount of tooling frame structure to match a variety of tooling profiles with different profile profiles, The manufacturing, replacement and correction of composite tooling are completed through material layup and accumulation, curing and processing. It is suitable for the manufacturing process of forming tooling in the research and development stage of small-batch composite products with high profile and dimensional accuracy requirements. Save R&D costs and shorten R&D cycle.
Description
Technical Field
The invention belongs to the technical field of tool manufacturing, and particularly relates to a manufacturing method of a low-cost modular composite material forming tool.
Background
The composite material product usually adopts aluminum, high-strength steel, invar steel, carbon fiber composite material and the like as the preferred materials of the forming tool, and the problems of heat efficiency, temperature uniformity, operability and the like are considered, and most of the composite material product mainly adopts a frame type structure. With the requirements of the application field on the profile precision and the size precision of composite material products and the continuous improvement of the manufacturing efficiency of the composite material products, the traditional metal mold has the problems of large thermal expansion coefficient, heavy weight, slow response and the like, and the traditional metal mold can not meet the development of the composite material industry gradually as a mold material; compared with the composite material tool, the composite material tool has the advantages of good thermal expansion performance matching, low density, small heat capacity, certain repairability and the like, and is increasingly applied to the manufacturing process of composite material products.
However, the conventional composite material tooling generally adopts tooling prepreg for manufacturing, and although a set of female die can be used for manufacturing a plurality of sets of composite material tooling, the requirement of a large-scale manufacturing process of composite material products can be met, high material cost and manufacturing cost can be generated, and the tooling is not suitable for manufacturing a forming tooling in a development stage of small-scale composite material products with high dimensional precision requirements.
Therefore, the invention provides a low-cost modular composite material forming tool manufacturing method, which is suitable for the forming tool manufacturing process in the research and development stage of small-batch composite material products with high profile and dimensional accuracy requirements, and can greatly save research and development cost and shorten the research and development period.
Disclosure of Invention
In order to solve the technical problems, the invention provides a method for manufacturing a low-cost modular composite material molding tool, which can omit the manufacturing process of a female die, match tool profiles with various profiles and contours by a small number of tool frame structures, and complete the manufacturing, replacing and correcting of a composite material tool through the material stacking, accumulation, solidification and processing. The method can quickly realize the manufacturing process of the composite material forming tool, is suitable for the development stage of small-batch composite material products with high requirements on precision, and comprises the following steps:
step 1: adopting a fixed connection method of riveting or screwing a matched gasket, combining the frame base materials into a frame structure through connecting pieces such as angle pieces or tee joints, and reserving an assembling hole or an embedded assembling bolt on one side of the frame close to the molded surface of the tool, namely finishing the manufacture of the tool frame 1;
step 2: machining a backing substrate into lining plates, wherein one side of each lining plate is provided with a cambered surface with a certain curvature, the other side of each lining plate is a straight surface and can be connected with a tool frame 1 through corner pieces, and the lining plates form a tool profile backing according to the distribution form of the tool frame 1, so that the manufacturing of a tool profile backing 2 is completed;
and step 3: matching surface base materials matched with the arc surface of the tool profile backing 2 are connected with one side of the arc surface of each lining plate through corner pieces, a plurality of matching surface base materials are spliced to form a tool profile matching surface 3, and a layer of non-porous isolating film is laid on the matching surface, so that the manufacturing of the tool profile matching surface 3 is completed; the composite material molding tool is shown in a schematic diagram in fig. 1;
and 4, step 4: sequentially laying a vacuum bag and a nonporous isolation film on the surface of the nonporous isolation film, laying or accumulating mold plastics on the nonporous isolation film to prepare a tool profile blank, curing and molding by adopting a vacuum bag pressing or autoclave molding process after packaging, and processing to a tool theoretical profile according to a tool digital model to finish the manufacturing of a tool profile 4;
and 5: sticking a layer of double-sided adhesive film on the fitting surface 3 of the tool profile, placing the tool profile 4 which completes the machining process of the theoretical profile of the tool on the double-sided adhesive film, and ensuring no gap between the tool profile 4 and the fitting surface 3 of the tool profile, namely completing the manufacture of the low-cost modular composite material forming tool;
the manufacturing method of the low-cost modular composite material forming tool comprises the following steps:
in the step 1, the frame base material is a carbon fiber fabric reinforced thermosetting resin-based composite material plate or tube, the compression strength is more than or equal to 550MPa, the bending strength is more than or equal to 820MPa, and the long-term use temperature is higher than the curing temperature of a composite material product;
in the step 2, the backing substrate is a carbon fiber fabric reinforced thermosetting resin-based composite material plate, the compression strength is more than or equal to 550MPa, and the long-term use temperature is higher than the curing temperature of a composite material product;
in the step 3, the base material on the matching surface is a carbon fiber fabric reinforced thermosetting resin-based composite material plate, the bending strength is more than or equal to 820MPa, the modulus is more than or equal to 60GPa, and the long-term use temperature is higher than the curing temperature of a composite material product;
in the step 3, when the matched surface substrates are spliced, a gap of 0.8-1.0 mm needs to be reserved between the adjacent substrates, and the matched surface profile of the tool formed by splicing the substrates with a plurality of matched surfaces is close to the profile of the tool;
in the step 4, the size of the vacuum bag is not less than 2 times of the area of the molded surface of the tool;
in the step 4, the molding compound comprises a sheet molding compound or/and a bulk molding compound, wherein the reinforcing phase is chopped carbon fibers or recycled carbon fiber fabric, and the matrix phase is high-temperature-resistant epoxy resin;
in the step 4, the packaging is to wholly coat the tool profile blank by adopting a vacuum bag;
in the step 5, the double-sided adhesive film is a high-temperature-resistant adhesive with a carrier, and the long-term use temperature of the double-sided adhesive film is higher than the curing temperature of the composite material product.
Compared with the prior art, the low-cost modular composite material forming tool manufacturing method has the beneficial effects that:
the molding compound containing chopped carbon fibers or recycled carbon fiber fabrics is used as a tool profile material, and the material and manufacturing cost is far lower than that of a tool prepreg used in the prior art;
the manufacturing of the tool frame can be completed through the combination of the composite material plates or the composite material pipes, the universality is strong, and the material and manufacturing cost is far lower than that of the traditional composite material forming tool frame;
the manufacturing method does not need a female die, and the processing difficulty of the molding compound cured material is lower than that of the tool prepreg cured material, so that the manufacturing link is reduced, and the manufacturing period is shortened;
the packaging and curing mode of the tool profile blank solves the problem of poor air tightness of the traditional composite material forming tool, and the combination and disassembly mode of the tool profile and the tool profile matching surface is simple and easy to implement;
the manufacturing process of the composite material forming tool with different profiles can be realized through the replacement of the tool profile backing, the tool profile matching surface and the tool profile, the tool profile is easy to correct and maintain, and the tool has the advantage of convenience in subsequent maintenance.
Drawings
Fig. 1 is a schematic view of a composite material molding tool assembly according to the present invention: 1-tool frame, 2-tool profile backing, 3-tool profile matching surface and 4-tool profile.
Detailed Description
The invention discloses key technical points including a combination form of a composite material forming tool, a tool profile backing, a tool profile matching surface, material selection, a connection mode, a forming method and the like in the manufacturing, replacing and correcting processes of a tool profile.
The present invention will be further described with reference to specific examples, but the present invention is not limited to these examples.
A manufacturing method of a low-cost modular composite material forming tool comprises the following steps:
step 1: riveting a composite material square tube (DS1207.3) to form a tool frame 1 through a tee joint, and reserving an assembling hole on one side, close to the tool profile, of the tool frame 1;
step 2: machining a composite material plate (DS1207.3) to form a lining plate with a curvature arc surface on one side and a connection with a tool frame through a corner piece on the other side, wherein the lining plates form a tool profile backing 2 according to the distribution form of the tool frame 1;
and step 3: connecting a composite material plate (DS1207.3) with one side of the cambered surface of each lining plate through a corner piece, combining a plurality of plates into a tool profile matching surface 3, wherein the clearance between the plates is
In order to avoid the damage of the matching surface caused by the high-temperature expansion of the base material, a pressure sensitive adhesive tape (FLASHBREAKER1) is pasted at the gap, and a layer of non-porous isolating membrane (WL5200) is laid on the matching surface 3 of the tool profile;
and 4, step 4: sequentially laying a vacuum bag (IPPLONDPT1000) and a nonporous isolation film (WL5200) on the nonporous isolation film to ensure that the nonporous isolation film, the vacuum bag and the nonporous isolation film are laid smoothly without folds, laying a carbon fiber sheet molding compound (DS1209.5) to prepare a tool profile blank, integrally coating and packaging by adopting an autoclave molding process, curing and molding, and processing to a tool profile 4 according to a tool profile model;
and 5: pasting a double-sided tape (Airhold1CBS) on the tool profile matching surface 3, placing the tool profile 4 on the tool profile matching surface 3, ensuring no clearance between the tool profile 4 and the tool profile matching surface 3, and finishing the manufacturing process of the low-cost modular composite material molding tool; the composite material molding tool is schematically combined as shown in fig. 1.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911166145.8A CN110901103B (en) | 2019-11-25 | 2019-11-25 | A low-cost modular composite material forming tool manufacturing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911166145.8A CN110901103B (en) | 2019-11-25 | 2019-11-25 | A low-cost modular composite material forming tool manufacturing method |
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| CN110901103A true CN110901103A (en) | 2020-03-24 |
| CN110901103B CN110901103B (en) | 2021-07-27 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113771386A (en) * | 2021-09-27 | 2021-12-10 | 沈阳航空航天大学 | A manufacturing method of composite parts forming tool suitable for wet forming process |
| CN115179568A (en) * | 2022-06-20 | 2022-10-14 | 成都飞机工业（集团）有限责任公司 | Rib forming die for RFI liquid forming reinforced wall plate and preparation method |
| CN118061405A (en) * | 2024-03-15 | 2024-05-24 | 成都飞机工业（集团）有限责任公司 | A 3D printing composite mold and manufacturing method |
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| CN110901103B (en) | 2021-07-27 |
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