CN101767157B - Composite material rapid tooling manufacturing method - Google Patents
Composite material rapid tooling manufacturing method Download PDFInfo
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- CN101767157B CN101767157B CN 200810190264 CN200810190264A CN101767157B CN 101767157 B CN101767157 B CN 101767157B CN 200810190264 CN200810190264 CN 200810190264 CN 200810190264 A CN200810190264 A CN 200810190264A CN 101767157 B CN101767157 B CN 101767157B
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Abstract
The invention discloses a composite material rapid tooling manufacturing method and a composite material rapid tooling. The manufacturing method comprises the following steps of: firstly, forming a sand main body which is provided with a first surface relative to the prototype surface of the working piece; manufacturing a resin tooling frame, wherein a containing space for placing a positioning support piece is arranged in the frame, and at least one positioning supporting piece is placed in the containing space; arranging the prototype of the working piece on the positioning supporting piece; combing and positioning the sand main body in the resin tooling frame, wherein the first surface of the sand main body keeps a gap with the surface of the prototype of the working piece; forming a resin mixing material layer on the first surface and pouring resin mixing liquid; taking the resin mixing liquid out, hardening and combining with the sand main body to form the composite material rapid tooling. The composite material rapid tooling combined by the resin and the sand can be used for manufacturing simple tooling of large and complicated curved products, and has the advantages of timeshortening, high precision, high quality and economy.
Description
Technical field
The present invention relates to a kind of rapid tooling manufacturing method, particularly a kind of fast mould processing procedure that utilizes the composite of high-ductility.
Background technology
General traditional sheet metal mould is all punching block, the mould steel embryo allays, line cutting, discharge, attrition process, is polished to the strict passages such as the surface treatment output mould that begins to get through feeding, roughing, stress, the exploitation time-histories is comparatively tediously long and cost is high, therefore, new car test or maintenance spare unit spare etc. have a small amount of various part product, and industry often selects fast mould (claiming again temporary mould or simple die) to replace nonvolatil punching block.
General fast mould is because of different divide into low-melting alloy or kirsite, cast iron die, resin die, electroforming mould and the metal spraying moulds etc. of material from processing procedure.Above-mentioned existing fast mould engineering method there is no on the method extensive use industry, reason is approximately shown in following: low-melting alloy is the alloy that the metals such as lead, bismuth, tin form, price is relatively expensive and need firing equipment when using, kirsite and cast iron also need the high-temperature digestion stove to be smelted into the casting embryo, all must finish the casting embryo when low-melting alloy, kirsite and cast iron are used, then will cast embryo and reprocess out die face and begin into mould; Please refer to the resin die cutaway view of prior art shown in Figure 1.Resin die 10 is perfusion shaping die after using resin, curing agent to mix with filler, and for the mould of large-scale sheet metal component, the cost of all using resin material is very high, and it is limited to cause die cost to reduce.
Therefore, existing metal plate punching fast mould (such as low-melting alloy or kirsite, cast iron die, resin die, electroforming mould and metal spraying mould etc.) relatively can't be fully for a small amount of various large-scale sheet metal component provide fast, economy and the efficient market demand, still have the space of many improvement in the practical application.
Summary of the invention
The problem that wish of the present invention solves is, a kind of manufacture method of composite material rapid tooling is provided, this composite material rapid tooling is to use the main part that the employed sand mo(u)ld of casting field is made most of area of fast mould, again form one hardening of resin layer and forming at least one surface of sand mo(u)ld; With the simple die manufacturing that can be applicable to large complicated carved product and have shorten time-histories, precision is good, quality good, economic advantage is arranged again.
The technological means system that the present invention solves above-mentioned processing procedure problem provides a kind of composite material rapid tooling manufacturing method, step comprises: moulding one sand mo(u)ld main body, this sand mo(u)ld main body has a first surface, and this first surface moulding is roughly corresponding to a workpiece prototype molding surface; Make a resin die framework, have at least one positioning supporting part in the accommodation space of this resin die framework; This workpiece prototype is arranged on this positioning supporting part; Be combined this sand mo(u)ld main body of location in this resin die framework, this first surface of this sand mo(u)ld main body is surperficial relative with this workpiece prototype and keep a gap; Perfusion one resin mixture liquor in this accommodation space of this resin die framework is to form a resin mixed material layer on this first surface; And take out the sclerosis of this resin mixture liquor and be incorporated into formed this composite material rapid tooling of this sand mo(u)ld main body.
Useful technique effect of the present invention is, the invention provides a kind of new-type composite material mould and manufacturing process thereof take resin and sand mo(u)ld as main component, the good die surface of the reproducible high complex surface quality of resin material, the inner filling high temperature resistance and high strength foundry sand mold materials of resin structure, molding sand cheap and behind high temperature sintering intensity good, the simple die manufacturing that the composite material structure that resin is combined with sand mo(u)ld is applied to large complicated carved product have shorten time-histories, precision is good, quality good, economic advantage is arranged again.
Description of drawings
Figure 1 shows that the resin die cutaway view of prior art;
Figure 2 shows that the flow chart of composite material rapid tooling manufacturing method embodiment of the present invention;
Fig. 3 A to Fig. 3 E is depicted as the structural profile schematic diagram of Fig. 2;
Figure 4 shows that composite material rapid tooling of the present invention buries the cut-away view of supporting frame embodiment underground; And
Figure 5 shows that the surface of composite material rapid tooling of the present invention forms the cut-away view of matsurface embodiment.
Wherein, description of reference numerals is as follows:
10 resin material moulds, 20 sand mo(u)ld main bodys
21 supporting frames, 211 gim pegs
22 first surfaces, 30 workpiece prototypes
40 resin die frameworks, 41 accommodation spaces
42 cover plates, 43 positioning supporting parts
44 gaps, 50 resin mixture liquor
51 resin mixed material layers, 60 composite material rapid tooling
61 working surfaces, 70 vaccum-pumping equipments
The S matsurface
The specific embodiment
Now cooperate accompanying drawing that preferred embodiment of the present invention is described in detail as follows.
At first please refer to the flow chart of composite material rapid tooling manufacturing method embodiment of the present invention shown in Figure 2 and the structural profile schematic diagram of Fig. 3 A to Fig. 3 Fig. 2 that E illustrates.In the present embodiment, its manufacture method comprises:
Step S100: moulding one sand mo(u)ld main body 20, this sand mo(u)ld main body 20 has a first surface 22, preferably, the rough molding surface corresponding to a workpiece prototype 30 of the moulding of this first surface 22 (as shown in Figure 3A).Above-mentioned sand mo(u)ld main body 20 is with a casting sand mixing water glass (Na
2SiO
3) the silica sand waterglass mixture that forms makes through sintering process.The sintering process of its application is for to import this silica sand waterglass mixture in one moulding box, and passes into carbon dioxide (CO
2) gas to be to form hygrometric state sand mo(u)ld (time that hardens into the hygrometric state sand mo(u)ld is different with the mould size, general about 5～10 minutes, but not as limit), again the hygrometric state sand mo(u)ld is inserted in the sintering furnace, with 1050 ℃ of sintering of the highest sintering temperature at least 2 hours.And this casting sand granular size of above-mentioned silica sand waterglass mixture is 22S to 60S, and the weight rate of this waterglass is 1% to 7% of casting sand.
Step S110: make a resin die framework 40, this resin die framework 40 has an accommodation space 41 and a cover plate 42, have at least one positioning supporting part 43 in this accommodation space 41, this positioning supporting part 43 can be installed on the bottom surface or sidewall of this accommodation space 41 (shown in Fig. 3 B).
Step S 120: this workpiece prototype 30 is arranged on this positioning supporting part 43, and it wants to provide working face that composite material rapid tooling 60 copies up (shown in Fig. 3 B).
Step S130: in this resin die framework 40, be combined this sand mo(u)ld main body 20 of location, and with this resin die framework 40 cover plate 42 that closes, this first surface 22 of this sand mo(u)ld main body 20 is relative with these workpiece prototype 30 surfaces and keep a gap 44, and this gap 44 namely determines to be covered in the thickness of the resin material on this first surface 22.Be not limited to this first surface 22 if cover this sand mo(u)ld main body 20, also want to comprise other surface of this sand mo(u)ld main body 20, such as side or end face, in the time of then must being to locate this sand mo(u)ld main body 20 in this resin die framework 40, reserve the distance (shown in Fig. 3 C) between these sand mo(u)ld main body 20 surfaces and these resin die framework 40 accommodation spaces 41 walls.
Step S140: in this accommodation space 41 of this resin die framework 40, pour into a resin mixture liquor 50, on this first surface 22, to form a resin mixed material layer 51.For making this resin mixture liquor 50 unlikely generation bubble in stowing operation, this step vacuumizes in the processing procedure one carries out as good.And this vacuumizes processing procedure, can dispose vaccum-pumping equipment 70 in this accommodation space 41 of this resin die framework 40, so that this resin die framework 40 forms a vacuum tank (shown in Fig. 3 D), the vacuum pressure in this vacuum tank is lower than atmospheric pressure 2Kg/cm
2When above, begin to pour into this resin mixture liquor 50 operations.After above-mentioned this resin mixture liquor 50 comprises the resin and 300% to 500% weight additives mixed of 100% weight, add again the curing agent of 50% to 100% weight and form.Above-mentioned this additive can be the thing of inserting of iron powder, aluminium powder, glass fibre, ceramic powder or other reinforced structure.
Step S150: be incorporated into formed this composite material rapid tooling 60 of this sand mo(u)ld main body (shown in Fig. 3 E) after taking out these resin mixture liquor 50 sclerosis, the time of resin mixture liquor 50 sclerosis is different with the mould size, generally be about 5～40 minutes, but not as limit.
When above-mentioned workpiece prototype 30 surfaces were the outer surface of a metal plate spare part, its this made composite material rapid tooling 60 can be a dynamic model mould or is a cover half mould; And above-mentioned workpiece prototype 30 surfaces are when being the inner face of a metal plate spare part, and its this composite material rapid tooling 60 of making also can be a dynamic model mould or can be a cover half mould.
In addition, the smoothly demoulding after for the benefit of this composite material rapid tooling 60 is shaped, when this workpiece prototype 30 is arranged on the positioning supporting part in the resin die framework or before, also comprise a step of spraying mould release, so that mould release is sprayed on these workpiece prototype 30 surfaces or resin die framework 40 inner surfaces.
Please refer to composite material rapid tooling of the present invention shown in Figure 4 and bury the cut-away view of supporting frame embodiment underground.It is to make this sand mo(u)ld main body 20 obtain better tensile strength behind sintering, can bury at least one supporting frame 21 in this silica sand waterglass mixture underground.Certainly, if when the composite material rapid tooling of making 60 belongs to large mold, an end of this supporting frame 21 of burying underground outwards projection becomes a bar section, forms the holding structure of a gim peg 211, carries in order to clamping.
The surface that please refer to again composite material rapid tooling of the present invention shown in Figure 5 forms the cut-away view of matsurface embodiment.In the present embodiment, the faying face of this sand mo(u)ld main body 20 and this resin mixed material layer 51 has the matsurface S moulding of at least one indentation pattern, to improve the bond strength of this resin mixed material layer.
Please refer to shown in Fig. 3 E, composite material rapid tooling embodiment provided by the present invention, its composite material rapid tooling 60 comprises: a sand mo(u)ld main body 20, it has a first surface 22; And a resin mixed material layer 51, it takes shape on this first surface 22, and this resin mixed material layer 51 forms a working surface 61.After this resin mixed material layer 51 comprises the additives mixed of the resin of 100% weight and 300% to 500% weight, add again the curing agent of 50% to 100% weight and form, wherein, but this additive can be the additive of the reinforced structures such as iron powder, aluminium powder, glass fibre or ceramic powder.This composite material rapid tooling 60 can be a dynamic model or a cover half, and wherein the faying face of this sand mo(u)ld main body 20 and this resin mixed material layer 51 has the matsurface S moulding of at least one indentation pattern, to improve the bond strength of this resin mixed material layer 51.And this resin mixed material layer 51 more is coated on other surface outside these sand mo(u)ld main body 20 these first surfaces 22.
The invention provides composite material rapid tooling and processing procedure thereof that a kind of new-type resin and sand mo(u)ld are main component, the reproducible complexity height of resin material and the good die surface of surface quality, the inner filling of resin structure is high temperature resistant, high-intensity foundry sand mold materials, molding sand cheap and behind high temperature sintering intensity good, the fast mould manufacturing that the composite material structure that resin is combined with sand mo(u)ld is applied to large complicated carved product have shorten that time-histories, precision are good, well economic advantage again of quality.The present invention is specially adapted in a small amount of various application of large-scale sheet metal mould of new car exploitation or maintenance spare unit spare, and processing procedure of the present invention can replace existing fast mould engineering method, reaches fast, economy, efficient development goal.Be particularly suitable for being applied to the large-scale sheet metal component exploitation of automobile and trial-production, save die cost more than 60%, shorten the exploitation time-histories more than 50%.With the relatively more about resin material cost that can save more than 80% of conventional resins mould.The resin surface layer replicability is good and surface quality good, and forming speed is fast.With kirsite, low-melting alloy and cast iron die relatively, do not need heating for dissolving equipment and needn't after shape die face, have the advantages such as the simple and easy and time-histories shortening of construction.It is good to use resistant to elevated temperatures porous sand mo(u)ld and resin-bonded formability, has shock-absorbing effect for large-scale sheet metal part mold, and die life, more general full resin die was long and cheap.And the present invention has wide range of applications, and almost can be applied to simultaneously the industries such as automobile, space flight, medical treatment and toolroom machine, can be applicable to mould of plastics on the product and penetrates the occasion such as wax-pattern tool.
In sum, only notebook invention is not to limit practical range of the present invention for presenting embodiment or the embodiment of the technological means that adopts of dealing with problems.Be that scope context all and of the present invention conforms to, or change and modification according to the equalization that claim of the present invention is done, all contain within the scope of the invention.
Claims (12)
1. composite material rapid tooling manufacturing method, its step comprises:
Moulding one sand mo(u)ld main body, this sand mo(u)ld main body has a first surface, and this sand mo(u)ld main body is made through a sintering process for a silica sand waterglass mixture that is formed with casting sand mixing water glass;
Make a resin die framework, have at least one positioning supporting part in the accommodation space of this resin die framework;
One workpiece prototype is arranged on this positioning supporting part;
Be combined this sand mo(u)ld main body of location in this resin die framework, this first surface of this sand mo(u)ld main body is surperficial relative with this workpiece prototype and keep a gap;
Perfusion one resin mixture liquor in this accommodation space of this resin die framework is to form a resin mixed material layer on this first surface; And
Take out this resin mixture liquor sclerosis and be incorporated into formed this composite material rapid tooling of this sand mo(u)ld main body.
2. composite material rapid tooling manufacturing method as claimed in claim 1 wherein also comprises in this silica sand waterglass mixture and buries at least one supporting frame underground.
3. composite material rapid tooling manufacturing method as claimed in claim 1, wherein this sintering process comprises:
This silica sand waterglass mixture is imported in the moulding box, and pass into carbon dioxide to form a hygrometric state sand mo(u)ld; And
This hygrometric state sand mo(u)ld is inserted in the sintering furnace, with 1050 ℃ of sintering of the highest sintering temperature at least 2 hours.
4. composite material rapid tooling manufacturing method as claimed in claim 1, wherein this composite material rapid tooling is a dynamic model mould or a cover half mould.
5. composite material rapid tooling manufacturing method as claimed in claim 1, wherein carry out before this step that in this resin die framework, is combined this sand mo(u)ld main body of location, also comprise a step with this workpiece prototype surface or resin die framework inner surface sprinkling mould release, the smoothly demoulding after being shaped in order to this composite material rapid tooling.
6. composite material rapid tooling manufacturing method as claimed in claim 1, wherein this resin mixed material layer also comprises elongation moulding other surface outside this this first surface of sand mo(u)ld main body.
7. composite material rapid tooling manufacturing method as claimed in claim 1, wherein this resin mixture liquor is after comprising the additives mixed of the resin of 100% weight and 300% to 500% weight, adds the curing agent of 50% to 100% weight again and forms.
8. composite material rapid tooling manufacturing method as claimed in claim 7, wherein this additive is iron powder, aluminium powder, glass fibre or ceramic powder.
9. composite material rapid tooling manufacturing method as claimed in claim 1, wherein should be in this accommodation space of this resin die framework middle step of perfusion one resin mixture liquor vacuumize in the processing procedure one and carry out.
10. composite material rapid tooling manufacturing method as claimed in claim 9, wherein this to vacuumize processing procedure be to dispose vaccum-pumping equipment in this accommodation space of this resin die framework, so that this resin die framework forms a vacuum tank.
11. composite material rapid tooling manufacturing method as claimed in claim 10, wherein the vacuum pressure in this vacuum tank is lower than atmospheric pressure 2Kg/cm
2When above, begin to pour into this resin mixture liquor operation.
12. composite material rapid tooling manufacturing method as claimed in claim 1, the wherein rough moulding corresponding to this workpiece prototype surface of the moulding of this first surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200810190264 CN101767157B (en) | 2008-12-30 | 2008-12-30 | Composite material rapid tooling manufacturing method |
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| CN 200810190264 CN101767157B (en) | 2008-12-30 | 2008-12-30 | Composite material rapid tooling manufacturing method |
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| CN101767157A CN101767157A (en) | 2010-07-07 |
| CN101767157B true CN101767157B (en) | 2013-02-20 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4043376A (en) * | 1976-06-16 | 1977-08-23 | Nippon Gakki Seizo Kabushiki Kaisha | Casting process by vacuum molding |
| CN1555943A (en) * | 2004-01-02 | 2004-12-22 | 李钟毅 | Technology and mould for fast production of automobile brake drum casting sand mould |
| CN1807051A (en) * | 2006-01-09 | 2006-07-26 | 张炼 | Reinforced concrete resin slurry casting pipe and method for manufacturing the same |
-
2008
- 2008-12-30 CN CN 200810190264 patent/CN101767157B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4043376A (en) * | 1976-06-16 | 1977-08-23 | Nippon Gakki Seizo Kabushiki Kaisha | Casting process by vacuum molding |
| CN1555943A (en) * | 2004-01-02 | 2004-12-22 | 李钟毅 | Technology and mould for fast production of automobile brake drum casting sand mould |
| CN1807051A (en) * | 2006-01-09 | 2006-07-26 | 张炼 | Reinforced concrete resin slurry casting pipe and method for manufacturing the same |
Non-Patent Citations (1)
| Title |
|---|
| 重庆大学机械工程学院.水玻璃砂芯微波固化用模具材料.《重庆大学学报》.2002,第25卷(第1期), * |
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| CN101767157A (en) | 2010-07-07 |
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