CN203381072U - Superplastic forming die - Google Patents
Superplastic forming die Download PDFInfo
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- CN203381072U CN203381072U CN201320456611.8U CN201320456611U CN203381072U CN 203381072 U CN203381072 U CN 203381072U CN 201320456611 U CN201320456611 U CN 201320456611U CN 203381072 U CN203381072 U CN 203381072U
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Abstract
The utility model discloses a superplastic forming die which comprises an upper die and a lower die, wherein the upper die is provided with a pre-forming die cavity of a pre-formed structure; the lower die is provided with a forming die cavity sinking upward; the forming die cavity is corresponding to the pre-forming die cavity so that the forming die cavity and the pre-forming die cavity form a closed space when the lower die and the upper die are closed; an upper gas inlet hole and a lower gas inlet hole are respectively formed in the upper die and the lower die; the upper gas inlet hole and the lower gas inlet hole are communicated with the closed space and used for inputting a gas into the closed space. By adopting the superplastic forming die disclosed by the utility model, the forming process can be finished, the pre-forming and final forming can be finished in the same die, and the final forming can be performed immediately after the pre-forming; the superplastic forming die has the advantages of good integral formability of product, good mechanical property, uniform product thickness, abundant product varieties, simple preparation process, short production period, high output, low rejection rate, low production cost and the like.
Description
Technical field
The utility model relates to the manufacturing technology field, in particular to a kind of mould of superplastic formation.
Background technology
Superplastic forming technology, especially superplastic gas-bulging forming technique are more novel, first and then immature technology, have the advantages such as performance is good, precision is high, operation is simple, easy to operate, when guaranteeing product quality, have also saved the energy and equipment.In prior art, the box body forming parts of Rouno Cormer Pregrinding Wheel is taked the forming modes such as concave-convex mold shaping, hydroforming, but during for small round corner forming parts for example, exist easily break, the thickness of workpiece uniformity is inconsistent, the workpiece mechanical performance lowers, and the problem such as the percent defective increase that causes being shaped.
Therefore, current superplastic forming technology is further improved.
The utility model content
The utility model is intended to one of solve the problems of the technologies described above at least to a certain extent.For this reason, the purpose of this utility model is to propose a kind of mould of superplastic formation.
The utility model proposes a kind of mould of superplastic formation, according to the utility model embodiment, described mould comprises: patrix, and described patrix is provided with the preformed die cavity of preform constructions; And counterdie, be concaved with shaping mold cavity on described counterdie, described shaping mold cavity is corresponding with described preformed die cavity, so that described counterdie and described patrix when closed described shaping mold cavity and described preformed die cavity form enclosure space, and, described patrix and described counterdie are respectively arranged with enterprising pore and lower air admission hole, and described enterprising pore and described lower air admission hole communicate with described enclosure space.
Utilization is according to the mould of the superplastic formation of the utility model embodiment, not only can complete moulding process, and, preform and final shaping can complete at same mould, after preform, can finally be shaped immediately, in use, using the preformed die cavity with preform constructions (being designed according to actual needs) of patrix (can be also counterdie according to actual needs) as the preform die cavity, be shaped after the preformation form and can immediately air pressure be reversed, using counterdie (can be also patrix according to actual needs) as final shaping die cavity, obtain shaped article.In addition, existence due to preformed configuration, at the complicated box-like workpiece that is shaped, when interior button box shape workpiece is particularly arranged, material thickness protection zone during preform must push to easy weakened section, rather than the pure raw material by easy weakened section in existing preform technique first retain, probably because of protection zone, paste too early mould because only make advance reservation, cause the material extending that only leaves sub-fraction to go out minimum fillet, other parts can not participate in moulding again, and utilization is according to the superplastic formation mould of the utility model embodiment, raw material thickness protection zone during preform singly must not push to easy weakened section, and pushed protection zone must approach the shape of easy weakened section as far as possible, can effectively prevent that protection zone from pasting mould too early, the thickness of moulding can be controlled.Utilization according to the superplastic formation mould of the utility model embodiment when carrying out moulding; have that the integrally formed property of product is good, the even thickness of good mechanical property, product, the advantage such as product category is abundant, preparation technology is simple, with short production cycle, output is high, percent defective is low, production cost is low; be applicable to industrialization, large-scale production, there is wide application space and huge market popularization value.
According to embodiment more of the present utility model, the mould of above-mentioned superplastic formation can also have following additional technical feature:
Further, described preformed die cavity have annular groove, spherical, oval spherical, fan-shaped, waveform, the shape of a saddle and square at least one preformed configuration.Thus, when being shaped, existence due to preformed configuration, raw material can be heaved difform bubble according to design, heave the rear thickness attenuation of bubble, can play two positive roles: 1. strength required when the thin place of raw material is shaped is little, when being shaped, can more preferably be out of shape and attenuation, if the position of the more difficult attenuation of Forming Workpiece is dropped in this position by desirable state, can further raw material be used to the position of needs; 2. based on the Mechanics Vector analysis; the position that during gas expansion forming, raw material are heaved bubble can be inclined to and shakeout; therefore can utilize the shakeouing of bubble of heaving to be inclined to the desirable position that the thickness protection zone is pushed to design in advance; help drops on the thickness protection zone of sheet material the corner of final workpiece; thereby the problems such as other positions of Thickness Ratio, the soluble corner such as the box-like workpiece are thin, make the thin and thick of product even.
Further, the precalculated position of described mould is provided with graphite.Thus, graphite can be filled up any small space under the pressure of hydraulic press, and at high temperature can not melt or decompose, and can keep for a long time sealing the gas effect, and envelope gas effect is ideal, is conducive to suppress to produce hole.
Further, described patrix and described counterdie are connected with respectively heating plate and lower heating plate, and described upper heating plate and described lower heating plate are connected with respectively thermal insulation board and lower thermal insulation board.Thus, can, according to the actual requirements to mold heated, make mould can keep rational forming temperature.
Further, temperature control system and pneumatic control system can also be applied on above-mentioned mould.
Can realize that according to the mould of the superplastic formation of embodiment of the present utility model following advantages is one of at least:
1, according to the mould of the superplastic formation of embodiment of the present utility model, mould can form under heating condition, avoided resilience to cause such as problems such as dimension overproofs, make that the Product Precision that is shaped out is high, surface quality is good;
2, according to the mould of the superplastic formation of embodiment of the present utility model, can improve the thin and thick uniformity of shaped article, increased product machinery serviceability, and the technical problem such as cause that because breaking waste product increases while effectively having solved shaping;
3, according to the mould of the superplastic formation of embodiment of the present utility model, can complete preform in same mould and be shaped two steps, prevented that raw material crystal grain from becoming the shaped article performance caused greatly and going down, also reduced the time of depanning and turnover simultaneously, improved speed of production;
4, according to the mould of the superplastic formation of embodiment of the present utility model, owing to having solved sealing problem in mould, counterpressure forming can be on mould of the present utility model, realized simultaneously, the effect that suppresses the product Cavitated and improve properties of product can be reached;
5, according to the mould of the superplastic formation of embodiment of the present utility model, can prepare the complex structure product, give the designer larger design freedom, and created advantage for the mass production of superplastic air bulge, be conducive to promote superplastic forming technology at application and development.
Additional aspect of the present utility model and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
The accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage are from obviously and easily understanding becoming the description of embodiment in conjunction with following accompanying drawing, wherein:
Fig. 1 is the shaping schematic view of superplastic air bulge of the prior art;
Fig. 2 is the structural representation according to the mould of the superplastic formation of an embodiment of the utility model;
Fig. 3 is the structural representation according to the preformed die cavity of the mould of the superplastic formation of the utility model another one embodiment, and in Fig. 3, A has shown the planar structure of preformed die cavity, and B has shown the cross-section structure of preformed die cavity.
Reference numeral:
Patrix 1, counterdie 2, preformed die cavity 3, shaping mold cavity 4, enterprising pore 5, lower air admission hole 6, lower heating plate 7, upper heating plate 8, upper thermal insulation board 9, lower thermal insulation board 10, sheet material 11.
The specific embodiment
Below describe embodiment of the present utility model in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label means same or similar assembly or the assembly with identical or similar functions from start to finish.Be exemplary below by the embodiment be described with reference to the drawings, only for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " thickness ", " on ", D score, " left side ", " right side " " wait the orientation of indication or position relationship for based on orientation shown in the drawings or position relationship; to be only the utility model and simplified characterization for convenience of description; rather than the device of indication or hint indication or assembly must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.Term " first ", " second " be only for describing purpose, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the present utility model, the implication of " a plurality of " is two or more, unless otherwise expressly limited specifically.In the utility model, unless otherwise clearly defined and limited, broad understanding should be done in the terms such as term " installation ", " being connected ", " connection ", " fixing ", for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also to be electrically connected to; Can be directly to be connected, also can indirectly be connected by intermediary, can be the connection of two component internal.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.
The following discovery that the utility model is based on the inventor completes:
In existing superplastic forming technology, preform technology and being shaped often two is separately carried out, cause material grains often to be exaggerated to the time before being shaped for the second time at shaping for the first time, lowered the processability of material, cause the shaping percent defective of workpiece to increase, and existing preform technique first retains the material of easy weakened section purely, probably because of protection zone, paste too early mould because only make advance reservation, the material that only leaves sub-fraction can stretched minimum fillet, the product that is difficult to the molding structure complexity, the problem such as also can cause the product mechanical performance to descend and in uneven thickness, the superplastic air bulge direct forming box-shaped member of the prior art of take is example, with reference to figure 1, sheet material at the beginning can be with a hemispheric form (article one line that is shaped downwards, from top to bottom, lower same), when sheet material contacts die surface for the first time (second line), two surfaces can produce friction, restriction even prevents that sheet material from continuing to flow, distortion after not participating in, along with continuous shaping, sheet material is pasted dead area more and more large (the 3rd bar line) by mould, more the shaping in later stage can be fewer for the material stretched, so that arrived last, the wedge angle that difficulty is the highest can only be gone to stretch by the very little sheet material of area and form, wherein the attenuate problem with four corners of box is the most serious.Thereby, there is no in fact at present mould and the method that can effectively solve the problems of the technologies described above.Inventor of the present utility model is surprised to find, and by the technical solution of the utility model, can effectively solve example of the prior art technical problem described above.In conjunction with above-described utility model content and following part, the feature and advantage of technical solutions of the utility model will be described in greater detail.
It should be noted that, above-mentioned " discovery " be all inventor of the present utility model after having paid a large amount of arduous labors, unexpected obtain.
The utility model proposes a kind of mould of superplastic formation, according to the utility model embodiment, as shown in Figure 2, this mould comprises: patrix 1 and counterdie 2, wherein, patrix 1 is provided with the preformed die cavity 3 of preform constructions, shape and the structure of preformed die cavity 3 are not particularly limited, can need to carry out different designs according to difference, it can be for example annular groove, spherical, oval spherical, fan-shaped, waveform, the shape of a saddle and square structure, Fig. 3 has shown circular groove structure, the shaping mold cavity 4 be concaved with on counterdie 2, preformed die cavity 3 is corresponding with shaping mold cavity 4, when patrix 1 and counterdie 2 closure, preformed die cavity 3 and shaping mold cavity 4 form enclosure spaces, and patrix 1 and counterdie 2 are respectively arranged with enterprising pore 5 and the lower air admission hole 6 communicated with enclosure space, can input gas to enclosure space by enterprising pore 5 and lower air admission hole 6.Certainly, person skilled it should be understood that mould also can be divided into left mould and right mould according to actual needs; preformed die cavity 3 not only can be arranged on patrix 1; can also be arranged on other position, for example, on counterdie 2, these all drop in protection domain of the present utility model.During use, with reference to figure 2, at first from air admission hole 6 input the gas of certain air pressure to enclosure space, sheet material is upwards entered in preformed die cavity 3 and carries out preformed, to obtain the preformed workpiece; After completing preformed, from enterprising pore 5, input the gas of certain air pressure to enclosure space, the preformed workpiece is entered downwards in shaping mold cavity 4 and carry out moulding, finally utilize the ejecting mechanism depanning of mould, thereby obtain shaped article.Person skilled also can be used for reference other shaping means of prior art, repeats no more.
Further, can also do improvement to above-mentioned mould, for example, shown in Fig. 2, patrix 1 and counterdie 2 are connected with respectively heating plate 8 and lower heating plate 7, upper heating plate 8 and lower heating plate 7 are connected with respectively thermal insulation board 9 and lower thermal insulation board 10, thereby make mould can obtain desirable forming temperature.
In the utility model, inventor of the present utility model has creatively applied graphite in mould, precalculated position at mould arranges graphite, preferably adopt resistance to elevated temperatures can reach the graphite of 1000 degrees centigrade, graphite can be filled up any small space under the pressure of hydraulic press, and at high temperature can not melt or decompose, and can keep for a long time sealing the gas effect, envelope gas effect is ideal, is conducive to suppress to produce hole.
In the utility model, the design of mould and technology of preparing means are not particularly limited, mould can be by the mould of finite element modelling optimal design, the structure of mould preform die cavity is by the finite element modelling optimal design, then digital control processing forms, realize final products needed amount when being shaped out preshaped, preformed structure is intended to improve the uniformity of product, referring to figs. 2 and 3, take annular groove as example, when moulding, do not participate in the part of distortion after adherent when the effect of annular groove is normal superplastic forming, attenuation in advance, increase it to inhomogeneity contribution, after ring-shaped platform inflation downwards, during sheet material 11 pad pasting, corner is just in time dropped in its position, even if preformed is incomplete, during because of its preformed, thickness does not change, just in time make up this type of deficiency and meet whole evenness of wall thickness.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the characteristics of this embodiment or example description.In this manual, the schematic statement of above-mentioned term not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or characteristics can be with suitable mode combinations in any one or more embodiment or example.
Although the above has illustrated and has described embodiment of the present utility model, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art is not in the situation that break away from principle of the present utility model and aim can be changed above-described embodiment in scope of the present utility model, modification, replacement and modification.
Claims (4)
1. the mould of a superplastic formation, is characterized in that, described mould comprises:
Patrix, described patrix is provided with the preformed die cavity of preform constructions; And
Counterdie, be concaved with shaping mold cavity on described counterdie, and described shaping mold cavity is corresponding with described preformed die cavity so that described counterdie and described patrix when closed described shaping mold cavity and described preformed die cavity form enclosure space,
And,
Described patrix is provided with enterprising pore, and described counterdie is provided with lower air admission hole, and described enterprising pore and described lower air admission hole communicate with described enclosure space respectively.
2. mould according to claim 1, is characterized in that, described preformed die cavity have annular groove, spherical, oval spherical, fan-shaped, waveform, the shape of a saddle and square at least one structure.
3. mould according to claim 2, is characterized in that, the precalculated position of described mould is provided with graphite.
4. mould according to claim 2, is characterized in that, described patrix is connected with heating plate, and described counterdie is connected with lower heating plate, and described upper heating plate is connected with thermal insulation board, and described lower heating plate is connected with lower thermal insulation board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320456611.8U CN203381072U (en) | 2013-07-29 | 2013-07-29 | Superplastic forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320456611.8U CN203381072U (en) | 2013-07-29 | 2013-07-29 | Superplastic forming die |
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| Publication Number | Publication Date |
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| CN203381072U true CN203381072U (en) | 2014-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320456611.8U Expired - Fee Related CN203381072U (en) | 2013-07-29 | 2013-07-29 | Superplastic forming die |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103358433A (en) * | 2013-07-29 | 2013-10-23 | 北京超塑新技术有限公司 | Super-plastic forming die and method thereof |
| CN109604409A (en) * | 2018-11-06 | 2019-04-12 | 北京航星机器制造有限公司 | Aluminium alloy abnormity sheet metal component preparation method and processing mold for rail traffic |
| WO2023240861A1 (en) * | 2022-06-14 | 2023-12-21 | 成都飞机工业（集团）有限责任公司 | Air guide system of superplastic forming/diffusion bonding mold and manufacturing method therefor |
-
2013
- 2013-07-29 CN CN201320456611.8U patent/CN203381072U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103358433A (en) * | 2013-07-29 | 2013-10-23 | 北京超塑新技术有限公司 | Super-plastic forming die and method thereof |
| CN103358433B (en) * | 2013-07-29 | 2016-04-20 | 北京超塑新技术有限公司 | Superplastic formation mould and method |
| CN109604409A (en) * | 2018-11-06 | 2019-04-12 | 北京航星机器制造有限公司 | Aluminium alloy abnormity sheet metal component preparation method and processing mold for rail traffic |
| CN109604409B (en) * | 2018-11-06 | 2022-07-12 | 北京航星机器制造有限公司 | Preparation method and processing die of aluminum alloy special-shaped sheet metal part for rail transit |
| WO2023240861A1 (en) * | 2022-06-14 | 2023-12-21 | 成都飞机工业（集团）有限责任公司 | Air guide system of superplastic forming/diffusion bonding mold and manufacturing method therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140108 Termination date: 20190729 |
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| CF01 | Termination of patent right due to non-payment of annual fee |