CN104139155A - Adding and manufacturing method of mold for generating die components - Google Patents
Adding and manufacturing method of mold for generating die components Download PDFInfo
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- CN104139155A CN104139155A CN201310162993.8A CN201310162993A CN104139155A CN 104139155 A CN104139155 A CN 104139155A CN 201310162993 A CN201310162993 A CN 201310162993A CN 104139155 A CN104139155 A CN 104139155A
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Abstract
The invention discloses a method for utilizing the adding and the manufacturing technology for generating a mold with a die shoe and pattern parts. The mold and the pattern parts are used for casting die components and used for the mold stamping process soon afterwards.
Description
Technical field
Present invention relates in general to for generating application for being cast in the upper mould (mold) of die assembly (die components) using of die assembly (die assemblies) and the interpolation manufacturing technology of prototype part (pattern parts) and the application for the manufacture of the interpolation manufacturing technology of the mould of die holder (die shoe).
Background technology
Such die assemblies such as such as crimping steel (trim steel), scrap cutter, flange steel, formation steel (form steel), punching insert (pierce insert), crimping insert (trim insert), nahlock insert (button block insert), to form and excision vehicle part, the assembly of the diel assembly of for example unnecessary steel plate of other like of bonnet, car door or formation.Have many die assemblies that are used in every kind of diel assembly, each has unique structure and function.Therefore, utilize and comprise that to cast multiple die assemblies by machine assembling die prototype with traditional sand casting method of the sand core of formation casting mould assembly be unpractical.The invention provides generation can have the component end item of near net-shape (near net-shape) the subsequently prototype part of one or more die assemblies or the technology of mould core package (mold core package) for casting technique casting.Like this, the invention provides the foundry goods that greatly reduces fine finishining work (finishing work) amount that need to complete after casting on parts.In addition, the invention provides a kind of method comprising with less raw material (stock material) casting near net-shape die assembly parts.
The common method of mfg. moulding die assembly is by full form casting process (investment casting process), and this technique comprises prototype skilled worker will
the approximate shapes of (polystyrene foam plastics) sheet formation die assembly glued together, then will
be processed into the shape and size of the expectation of the die assembly that will cast.Recently, this technology is called as subtraction manufacture and uses together with being processed into the metal derby of approximate shapes of die assembly or other such blank.The accuracy that the die assembly of this processing technology shortage casting near net-shape needs.Therefore, nearly the additional processing raw material of 10mm is stayed on the prototype part of subtraction manufacture and the foundry goods of generation.Must utilize this additional processing raw material of tediously long processes that comprises scanning object and generate the CNC program of the true form based on expectation parts.In final casting, having additional processing raw material needs multiple roughing steps, especially in the time needing cutting edge (cutting edge) on die assembly.Multiple roughing steps are essential, and reason is that the extra raw material on foundry goods exceedes the penetration depth of CNC lathe conventionally, make first must remove extra raw material by many rough cut operations.Parts must harden and finally carry out fine finishining between roughing technique.The present invention has eliminated the step being included in after some castings of manufacturing in finished product die assembly.
Summary of the invention
According to an aspect of the present invention, the method of a kind of manufacture for the prototype part of casting mould assembly is provided, comprises: (a) at construction platform (build platform) thus the step of upper stringer polymeric powder and (b) to the specific region of layer polymerization powder optionally apply solvent at described area bonded polymeric powder to determine the step of cross section of prototype part.Repeating step (a) and (b) manufacture have the complete prototype part of the structure of the die assembly that will cast.Then apply prototype part with slurry and form the shell around prototype part.Then heating casing hardens shell and makes prototype part evaporation, thereby generates the shell of the moon picture (negative image) that comprises prototype part.Melted material is poured into and in shell, forms die assembly.
According to a further aspect in the invention, provide a kind of method of mfg. moulding die assembly, comprise and utilize the step of adding manufacturing process formation model core bag, wherein model core handbag is containing the moon picture of the die assembly that will cast.Melted material is poured in mould core package and cooling melted material to form die assembly, this die assembly has the mould core package of the nearly clean structure (near net configuration) in the accuracy range of 1mm to 5mm that adds deduct.
According to another aspect of the invention, provide the method for a kind of manufacture for multiple sand mo(u)ld bags of casting mould assembly, comprise the step of utilizing the multiple sand mo(u)ld bags of 3D press printing that add, wherein multiple sand mo(u)ld handbags are containing one or more die assembly structures.The sand mo(u)ld bag of selecting from multiple sand mo(u)ld bags is nested in the cast structure with the runner being communicated with the sand mo(u)ld bag of each selection.Utilize runner melted material to be poured into the sand mo(u)ld bag of filling each selection in cast structure.Then cooling melted material is to form near clean unique die assembly of constructing of the sand mo(u)ld bag with each selection.
Person of ordinary skill in the field will be better appreciated by these and other aspect of the present invention, object and feature after reading following explanation, claim and accompanying drawing.
Brief description of the drawings
Fig. 1 puts work box before forming sand mo(u)ld bag or the birds-eye perspective of rigidity storage case in sand printing equipment;
Fig. 2 is the birds-eye perspective of the work box of Fig. 1 scatter one deck fine particles in work box time;
Fig. 3 is when the birds-eye perspective of putting the work box of Fig. 1 when adhesive is added in Printing Zone to the cross-sectional layer to form sand mo(u)ld bag by sand printing equipment;
Fig. 4 is the birds-eye perspective that sand printing equipment is put the work box of the Fig. 1 after some layers of sand of printing;
Fig. 5 is the birds-eye perspective that new trickle granulosa is just covering the work box of Fig. 1 of the print surface of work box;
Fig. 6 is the birds-eye perspective that has printed multiple mould core package and remove the work box of work box Fig. 1 afterwards from printing equipment;
Fig. 6 A is the perspective view of the multiple mould core package in the time removing from work box, and wherein mould core package is made up of bonding sand and unnecessary not bonding sand will remove;
Fig. 7 is the birds-eye perspective of upper and lower pattern assembly, and wherein upper and lower pattern assembly has the sand mo(u)ld bag that is nested in printing wherein;
Fig. 8 is the perspective view of the die assembly of casting;
Fig. 9 is the perspective view of die assembly, and wherein die assembly has attached die assembly thereon; And
Figure 10 is the flow chart that represents the interpolation manufacturing process for generating prototype part.
Detailed description of the invention
In order to describe, term herein " on " (" upper "), D score (" lower "), " right side " (" right "), " left side " (" left "), " afterwards " (" rear "), " front " (" front "), " vertically " (" vertical "), " level " (" horizontal ") and derivative thereof will relate to the invention shown in Fig. 1.However, it should be understood that, the present invention can adopt various alternative orientation, unless there be contrary clearly stating.It is also to be understood that, shown in accompanying drawing and illustrated concrete device and the program of description be only the embodiment of simple examples.Therefore, should not be considered to restrictive about concrete size and other physical features of embodiment disclosed herein, unless separately there is explicit state in claim.
Due to the degree of accuracy of the present invention and automation, the present invention has eliminated the many steps in the technique of mfg. moulding die assembly, has saved plenty of time, material and the cost of mfg. moulding die assembly.Utilize to add and manufacture or add technology of preparing, the degree of accuracy of the present invention and automation allow to eliminate the some rear casting technique step that generates the die assembly of expecting.According to embodiments of the invention, provide and sacrifice mould and sacrifice prototype part by the three-dimensional interpolation manufacturing process of manufacturing mould or prototype part in various each one decks ground.Be used in expendable material in interpolation manufacturing process of the present invention and comprise epoxy resin, sand, sand and ceramic mixture, powdered-metal, plastic resin etc.In interpolation manufacturing process of the present invention, by producing and the mould of expectation stacking as that produce in interpolation maker continuously or three-dimensional (3D) mould of thin cross-sectional layer assembling or the prototype part of parts.In order to generate the three-dimensional part with in the method for the invention, utilize mould that CAD program or other similar computer-assisted mapping Software Create will form or the design data of prototype part.
Under the type of the known interpolation manufacturing process of technical field comprise stereolithography (stereolithography apparatus) (SLA), 3D sand prints, and other three dimensional printing machine, utilize bonding solvent bonding pulverulent material layer, plastic fraction (plastic composition) ink-jet printer, utilize the device of laser sintered Metal Substrate powder and affiliated technical field is known, person of ordinary skill in the field is many other the such techniques that understand.Therefore,, in the situation that not deviating from purport of the present invention, any such technique can be suitable for being combined with the present invention generating the sacrifice prototype part of die assembly or the sacrificial mold for die assembly.
A kind of like this quick manufacturing process comprises now by the sand seal technique describing.The method starts from first utilizing cad model program to obtain 3D design data, thus generate for following explanation, by the sand mo(u)ld bag of the die assembly presenting with the form of crimping steel mold assembly.But, can be expected that and can utilize this technique to generate any such die assembly.First utilize CAD program to generate the 3D image of prototype part.Then from 3D cad model, deduct prototype part or model, thereby generate the design of sand mo(u)ld bag.Then utilize the 3D model of the sand mo(u)ld bag final with reference to the technology manufacture of Fig. 1-6 explanation.
Referring now to Fig. 1-6, the work box 40 of being made by the material of any amount including timber, metal etc. be placed on printing equipment 42 below.Work box 40 limits Printing Zone 44, and as described further below, in Printing Zone 44, multiple stacking particulate layers are by component model core bag (mold core package).Printing equipment 42 can print 3D mould, core and for mould core package of the present invention.
Term used in the present invention " mould core package " refers to mould sand seal or that otherwise form, that prepare for casting melted material.The assembly of term " mould " finger print core package, term " core " refers to be embedded in mould, be poured into the insert of mould core package for replacing melted material.Therefore, the combination of mould and core generates the mould core package for casting.To utilize utilize the mould core package of three-dimensional printing art or the formation of sand mo(u)ld bag discussed below in order illustrating, only to carry out exemplary illustration with reference to sand mo(u)ld bag 110 as shown in Figure 7.Should be understood that, can print several different sand mo(u)ld bags for casting other die assembly, and can in single typography, print such sand mo(u)ld bag simultaneously.
Printing equipment 42 is included in the funnel 46 of dislodger 48 positions, and dislodger 48 is at the thin layer of such activation fine particles 50 such as Printing Zone 44 laid inside such as silica sand, pottery and the mixture of sand etc.Particulate 50 can be to comprise that diameter is any size of 0.002mm to 2mm.Printing equipment 42 also comprises adhesive (binder) precipitation equipment or adhesive dispenser 52.As following in detail disclosed, adhesive dispenser 52 sprays thin layer of adhesive or binding agent 16 with structure or the pattern 80 of the sand mo(u)ld bag of expectation or the individual layer of sand core bag.The layering of sand and in fine particles 50 by adhesive dispenser 52 spray binding agent 16 repeat cause producing three-dimensional sand mo(u)ld bag or sand core bag by multiple stacking particulate layers.Process is enough to print a period of time of every skim fine particles 50, adds continuously and manufactures 3D sand mo(u)ld bag, the bonding particulate of every one deck is further bondd with contiguous layer, thereby form complete sand mo(u)ld bag.Every skim of complete sand mo(u)ld bag is measured about 0.28mm.Sand mo(u)ld bag will finally be used as the sacrificial mold of the such die assembly of preparation example crimping steel 120 as shown in Figure 8.
Specifically, with reference to Fig. 1, develop a kind of CAD (CAD) program, wherein on the computer 60 connecting with printing equipment 42, input and load multiple sand mo(u)ld bag 100(Fig. 6 A) concrete structure.Computer 60, by the information feed-in printing equipment 42 of the concrete structure from the multiple sand mo(u)ld bags 100 of having of CAD program, is used to form sand mo(u)ld bag 100.
Can be expected that, the sand mo(u)ld bag 100 that provides enough information to expect with formation for 3D printing equipment 42 is provided the 3D modeling software of CAD or any other form.Before opening 3D printing equipment 42, by particulate spout 62, the fine particles of predetermined quantity 50 is poured in funnel 46 together with the washcoat being provided by activator spout 72 or activator 70.Although shown embodiment uses for example such fine sand of fine particles 50, as mentioned above, fine particles 50 can comprise the material of any kind that is suitable for interpolation manufacturing technology disclosed herein or their combination.Fine particles 50 is mixed with activator 70 in funnel 46.The mixture that can mix by agitator 74 or other known mixing arrangement fine particles 50 and activator 70, makes fine particles 50 mix completely and activate.After fine particles 50 and activator 70 mix completely, fine particles 50 is moved to dislodger 48.Referring now to Fig. 2-6, after fine particles 50 moves to dislodger 48, scatter fine particles 50 in the mode thin and layer uniformly of the not bonding sand 90 of deposition across Printing Zone 44 by dislodger 48.After scattering thin layer on Printing Zone 44 in work box 40, adhesive or binding agent 16 are sprayed in the fine particles 50 of activation (Fig. 3).Binding agent 16 is distributed by adhesive dispenser 52, and adhesive dispenser 52 sprays skim binding agent 16 with the pattern 80 of the first thin cross-sectional layer that represents the sand mo(u)ld bag 100 of expecting.After ejection binding agent 16, prepare the mixture of another fine particles 50 and activator 70, and mixture is poured into dislodger 48.As shown in Figure 5, then dislodger 48 in work box 40, on 50 layers of the fine particles of scattering before, distribute another layer 90 of the fine particles 50 of not bonding activation.Adhesive dispenser 52 is crossed Printing Zone 44 again, sprays thin layer binding agent 16 with the pattern 80 of the second thin cross-sectional layer of sand mo(u)ld bag 100 of the expectation that represents contiguous the first thin cross-sectional layer.Repeat these steps repeatedly, until each cross-sectional layer (Fig. 7) of the sand mo(u)ld bag 110 that is in print complete.Utilize this interpolation manufacturing technology, in fact can form the sand mo(u)ld bag of any shape.And, utilize 3D sand to print the sand mo(u)ld bag of making and can there is the inner structural features that cannot generate by other known subtraction method.
As shown in Figure 3, foregoing exemplary sand seal technique is generating and will be used as multiple sand mo(u)ld bags 100 of the mould that forms die assembly.Therefore, foregoing sand prints technique can print several different sand mo(u)ld bags at single printing period (print session), for casting multiple unique die assembly.Due to accuracy and the degree of accuracy of 3D sand seal technology, can be at 80 to 150 sand mo(u)ld bags of any position printing in single typography.Therefore, as shown in Figure 6A, the shown foregoing additional manufacturing process printing of multiple sand mo(u)ld bags 100 use, and remove not bonding sand, thereby expose each sand mo(u)ld bag of the die assembly for generating crimping steel 120 forms as shown in Figure 8, for example sand mo(u)ld bag 110 as shown in Figure 7.
As soon as printed sand mo(u)ld bag 100, they are removed from tool box 40 and be then sent to Foundry Works's casting.Sand mo(u)ld bag 100 can be the unique mould for casting multiple kinds of molds assembly, and wherein each sand mo(u)ld handbag is containing the moon picture (negative image) of the die assembly that will cast.That the term " cloudy picture " that the present invention uses or " negative structure (negative configuration) " refer to form in mould, give with erect image by die cast or in the parts that otherwise form or construct complementary image or structure.In Foundry Works, the such sand mo(u)ld bag of sand mo(u)ld bag 110-114 that is for example selected from the sand mo(u)ld bag 100 of multiple printings is nested in mo(u)ld top half 116 and mo(u)ld bottom half 118 frame mountings or cast structure, as shown in Figure 7, with the supporting of common foundry sand and die assembly foundry goods they.As shown in the embodiment of Fig. 7, shown in top swage 116 there is the sand mo(u)ld bag 110a-114a being nested in wherein.Further as shown in Figure 7, anvil swage 118 shown in has the associated sand core bag 110-114 being nested in equally wherein.In foundry technology process, thereby utilize the access point (not shown) on the top that is arranged on top swage 116 that melted material is poured in upper and lower pattern 116,118 and filled sand mo(u)ld bag 110-114 with melting founding materials.Conventionally,, for mfg. moulding die assembly, use tool steel as melted material.Tool steel is poured into the access point on the top that is arranged on top swage 116, thus then tool steel can flow through a series of can be through top swage 116 to anvil swage 118, then extend and fill to greatest extent the runner of sand mo(u)ld bag 110-114 to sand mo(u)ld bag 110-114.Can further contemplate that, allow melted material to lead to contiguous sand mo(u)ld bag from a sand mo(u)ld bag thereby can print runner between contiguous sand mo(u)ld bag.One or more rising heads (riser) (not shown) can be set on the top of top swage 116, be used to refer to melted material and when filled up the sand mo(u)ld bag being arranged in upper and lower type device.In the time that melted material solidifies and hardens in sand mo(u)ld bag, remove upper and lower pattern 116,118, smash or otherwise destroy sand core bag 110-114, thereby expose the die assembly of casting.From the die assembly of casting, remove the flow passage system for fill sand mo(u)ld bag 110-114 in sand casting technical process, expose die assembly accurate manufacture, accurate structure thereby then clean and clean the die assembly of casting, it hardly need to fine finishining in die assembly.As mentioned above, above-mentioned 3D sand prints technology and can also be used for generating for casting die holder (die shoe) 140(Fig. 9) mould show sand mo(u)ld bag (die show sand mold package), die assembly can be connected to die holder for the manufacture of the complete die assembly using in Sheet Metal Forming Technology.
The accuracy and precision of casting mould assembly is in the accuracy range of about 1-5mm, or the 0.8mm that more preferably adds deduct.Therefore, the die assembly of casting need to increase few additional processing raw material, approximately 1mm to 1.5mm.Compared with producing the normal sand casting method of additional processing raw material of about 10mm, because the amount of raw material reduces, the die assembly of casting of the present invention can and grind in mounting base 122 places sclerosis, as shown in Figure 8, then carries out fine finishining.Reduced like this white light scanning, program composition, roughing, sclerosis, for the transport of hardening and the polishing of mounting base.In addition,, due to the degree of accuracy of casting, can remove the processing of the cutting surface of the die assembly with cutting edge completely.
Compared with traditional casting technique, because obviously shortening of time put in existence on market, the present invention gives plurality of advantages, can reduce nearly 10 to 17 days because produce the timetable of complete set of molds (die set).Another obvious advantage is the elimination of the design constraint to die assembly.Owing to utilizing above-mentioned additional manufacturing technology printing sand mo(u)ld bag, the conventional limited of finding in subtraction manufacture is eliminated, and makes to generate compound sand mo(u)ld bag, has complex geometry body and functional die assembly for casting.In addition,, due to the degree of accuracy of casting, some features of the die assembly of the consuming time rear casting processing needing at present can stay as foundry goods, or need fine finishining hardly.For example, boring 124 as shown on the crimping steel 120 of Fig. 8 and counterbore (counter bore hole) 126 can be cast into a part for die assembly, and needs little rear casting to process to develop the available jockey for connecting the such die holder of crimping steel 120 and example die holder 140 as shown in Figure 9.In order to generate for example boring 124 as shown on the crimping steel 120 of Fig. 8 and counterbore 126, can print sand mo(u)ld bag with the moon picture of such connection features.In addition, sand mo(u)ld bag can be printed with for example the moon picture of the further feature of the die assembly as the cutting edge 128 shown on the crimping steel 120 of Fig. 8.Flexibility of the present invention allows die assembly to generate heat treatment depth optimization feature (heat treat depth optimization feature).Heat treatment depth optimization depends on solid and the thickness of die assembly at present.Utilize the die assembly foundry goods of method of the present invention can there is required complex geometry body and the thickness of the heat treatment degree of depth of optimization.Due to the degree of accuracy of the sand mo(u)ld bag printing, can also remove the casting flash of light (Casting flash) generating in foundry technology process.Conventionally, casting flash of light produces in traditional sand casting technique, and must cut this casting flash of light with machine afterwards.Method of the present invention greatly reduces or eliminates the casting amount of flash on the die assembly of casting producing completely.
As previously mentioned,
the blank of (polystyrene foam plastics) or CNC processing can be for being used to form the prototype part of the mould of casting mould assembly after generating.The invention still further relates to utilize add manufacturing technology generate after for the prototype part of the generation of the mould of casting mould assembly.For aforementioned interpolation manufacturing technology, a preferred technique is to utilize the polymeric powder that comprises polymethyl methacrylate (PMMA) to build the interpolation manufacturing technology of material (base building material) formation polymerization prototype part as substrate.In the present invention, utilize the interpolation manufacturing process of PMMA powder also referred to as PMMA technique.Person of ordinary skill in the field should understand, and other adds manufacturing technology also can be used for generating the prototype part for casting technique afterwards.
As shown in figure 10, PMMA technique comprises the 3D design data of utilizing STL or cad file to produce prototype part from computer 200.The for example such prototype part of prototype part 220 as shown in figure 10 will have the structure of the die assembly parts that will cast.The design data of utilizing computer to generate, overcoating machine (recoater) 202 scatters thin layer PMMA powder 204 on construction platform 206.Scatter PMMA powder similar with distribution fine particles 50 in concept, as mentioned with reference to Fig. 1-6.Scatter one deck PMMA powder 204 on construction platform 206 after, the bonding PMMA powder particle of fine droplet of computer-controlled print head ejection solvent or adhesive is to form the cross-sectional layer 208 of prototype part.As soon as complete cross-sectional layer, construction platform 206 about 0.28mm that declines, and another layer of PMMA powder 204 covers on construction platform 206.With 0.28mm layer successively iterative process until complete prototype part.As shown in figure 10, in the time that PMMA technique completes, prototype part 220 is imbedded in not bonding PMMA powder 204 in essence.Use vacuum plant or otherwise from prototype part 220, remove this not bonding PMMA powder 204, and not bonding PMMA powder 204 can reuse in other PMMA technique.As soon as prototype part 220 completes, after can carrying out it in cryogenic box, solidify.Can be expected that, thereby the work box the work box 40 for example shown in Fig. 1-6 also can implement to comprise not bonding PMMA powder in PMMA forming technology.Then use wax tree fat (wax resin) thus soak into prototype part 220 sealing prototype part 220.
As soon as generation prototype part is taken Foundry Works and is generated the shell that will be used for full form casting process.For by prototype part for full form casting process, parts 220 are immersed in ceramic size or coated ceramic slurry otherwise, apply whole parts 220.Then parts sunk or otherwise introduce in fluid bed, pottery and sand or other similar dusty material of sand, clinging liquid ceramic size.As soon as applied the sand from the fluid bed of sand, make the mixture of liquid ceramic size and sand be dried and harden, then repeat this technique repeatedly to be formed on prototype part around and around the hard ceramic package of prototype part.As soon as form the shell of adequate thickness, heat packs is containing this shell of prototype part, and the polymerization prototype part that makes to be arranged in ceramic package is burnt or evaporated.Therefore,, after heating process, leave the ceramic package of the moon picture that comprises prototype part to operator.Utilize model casting or shell casting technique, melted material so for example tool steel is poured in the ceramic package of the moon picture with prototype part.After melted material solidifies, thereby smash or otherwise destroy the metalwork that ceramic package exposes casting, according to the present invention, the metalwork of this casting will be for example such die assembly of die assembly 120 as shown in Figure 8.
Utilize this PMMA technique, can successively manufacture represent die assembly accurately, accurate prototype part, thereby make in prototype part, to form the manufacture of complex geometry body and have the die assembly foundry goods of the prototype part of near net-shape.Just as noted above three-dimensional sand prints technique, and PMMA technique also reduces manufactures roughing and fine finishining step after the casting that finished product die assembly needs conventionally.Utilize the die assembly foundry goods of PMMA prototype part as above can there is the prototype part of the near net-shape in the accuracy range of about 1-5mm.In addition, can be expected that, the scope of this degree of accuracy can add deduct in the scope of 0.8mm forming the prototype part of shell.
Mould core package and pack by model core the method for making the instrument such such as but not limited to die assembly disclosed herein the performance of the wall thickness that the generation of improvement has optimization and the heat treatment degree of depth needing is provided, has reduced the possibility in warpage, crack etc. thus.In addition provide good part quality, accuracy and design flexibility, with by the associated degree of accuracy of typography modeling core bag.And, mould core package can be designed to improve circulation timei with the die assembly being packed by model core, increase thus parts manufacturing capacity.
Person of ordinary skill in the field should be understood that, described structure of the present invention and other assembly are not limited to any concrete material.Other exemplary embodiment of the present invention disclosed herein can and be added manufacturing technology and make by any kind of material, unless be otherwise noted here.It is also important that, should be noted that the configured and disposed of the element of the present invention shown in exemplary embodiment is only exemplary.Although seldom some embodiment of the present invention have been described in detail in description, but reading person of ordinary skill in the field of the present invention will easily understand, multiple variation is also possible (size, size, structure, shape and the ratio of for example various elements, parameter value, mounting arrangements, the application of material, color, orientation etc.) and do not depart from fact novel teachings of the present invention and advantage.For example, the integrated element illustrating can by multiple be shown can integrated multiple parts parts or element form, other variation can be turned or do to the operation at interface around, the length of the structure of system and/or parts or connector or other element or width can change, and the type of the adjusting position providing between element or number can change.It should be noted, the element of system and/or assembly can be by providing sufficient intensity or durability, have any formation in arbitrary polytype material of multicolour, texture or its combination.Therefore, all these variations are included in protection scope of the present invention.Can carry out substituting, revise, changing and omitting of other and not depart from spirit of the present invention design, operating condition and the setting of the above embodiments and other exemplary embodiment.
It will be appreciated that, the step in any described process or described process can combine to form with other disclosed process or step the structure of protection scope of the present invention.Exemplary structure and process disclosed herein are not only construed as limiting the invention for explanation.What it is also to be understood that is; the change that aforesaid structure and method are made and revise and do not depart from protection scope of the present invention; it will be appreciated that further, these concepts are covered by claim, unless the character express of these claims has contrary expression.
Claims (20)
1. manufacture, for a method for the prototype part of casting mould assembly, is characterized in that, comprises:
(a) stringer polymeric powder on construction platform;
(b) thus to the specific region of layer polymerization powder optionally apply solvent at described area bonded polymeric powder to determine the cross section of prototype part;
Repeating step (a) and (b) manufacture have the complete prototype part of the structure of die assembly;
Apply prototype part with slurry and form the shell around prototype part;
Heating casing hardens shell and makes prototype part evaporation, thereby generates the shell of the moon picture that comprises prototype part; And
Melted material is poured into and in shell, forms die assembly.
2. method according to claim 1, is characterized in that, on construction platform, the step of stringer polymeric powder further comprises:
The polymeric powder layer that deposition comprises polymethyl methacrylate.
3. method according to claim 2, is characterized in that, the step that the specific region of layer polymerization powder is optionally applied to solvent further comprises:
Utilize print head to spray solvent droplets on layer polymerization powder.
4. method according to claim 3, is characterized in that, further comprises:
Solidify prototype part.
5. method according to claim 4, is characterized in that, further comprises:
Thereby by wax resin impregnated prototype part sealing prototype part.
6. method according to claim 1, is characterized in that, applies prototype part formation further comprise around the step of the shell of prototype part with slurry:
Apply prototype part with ceramic size.
7. method according to claim 4, is characterized in that, further comprises:
After applying prototype part with ceramic size, prototype part is immersed in the fluid bed of sand.
8. method according to claim 1, is characterized in that, melted material is poured into the step that forms die assembly in shell and further comprises:
Formation has the die assembly of the prototype part of the near net-shape in the accuracy range of 1mm to 5mm.
9. a method for mfg. moulding die assembly, is characterized in that, comprises:
Utilize and add manufacturing process formation model core bag, wherein model core handbag is containing the moon picture of die assembly;
Melted material is poured in mould core package; And
Cooling melted material is to form die assembly, and this die assembly has the mould core package of the nearly clean structure in the accuracy range of 1mm to 5mm.
10. method according to claim 9, is characterized in that, utilizes the group of adding manufacturing process formation model core bag further to comprise:
(a) stringer particulate;
(b) thin layer is optionally applied to the cross section of binding agent with true fixed mold bag; And
Repeating step (a) and (b) to manufacture complete mould core package.
11. methods according to claim 10, is characterized in that, thin layer is optionally applied to binding agent and further comprise with the step of the cross section of true fixed mold bag:
Utilize three-dimensional sand printing equipment to put printing binder on thin layer.
12. methods according to claim 11, is characterized in that, cooling melted material further comprises with the step that forms the die assembly with the nearly clean mould core package of constructing in the accuracy range of 1mm to 5mm:
Formation has the die assembly of the mould core package of the nearly clean structure within the scope of 0.8mm.
13. methods according to claim 9, is characterized in that, manufacturing process formation model core bag is added in utilization, wherein model core handbag further comprises containing the step of the moon picture of die assembly:
Formation has the mould core package for the moon picture of the connection features of connecting mold assembly and mould punching assembly.
14. methods according to claim 13, is characterized in that, form the step having for the mould core package of the moon picture of the connection features of connecting mold assembly and mould punching assembly and further comprise:
Formation has the mould core package of the moon picture of boring and counterbore.
15. methods according to claim 9, is characterized in that, manufacturing process formation model core bag is added in utilization, wherein model core handbag further comprises containing the step of the moon picture of die assembly:
Formation has the mould core package of the moon picture of cutting edge.
16. 1 kinds of manufactures are used for the method for multiple sand mo(u)ld bags of casting mould assembly, it is characterized in that, comprise:
Utilize the multiple sand mo(u)ld bags of 3D press printing that add, wherein multiple sand mo(u)ld handbags are containing one or more die assembly structures;
The sand mo(u)ld bag of selecting from multiple sand mo(u)ld bags is nested in the cast structure with the runner being communicated with the sand mo(u)ld bag of each selection;
Utilize runner melted material to be poured into the sand mo(u)ld bag of filling each selection in cast structure; And
Allow molten material cools to form the near clean described die assembly of constructing of the sand mo(u)ld bag with each selection.
17. methods according to claim 16, is characterized in that, utilize the step of the multiple sand mo(u)ld bags of 3D press printing that add further to comprise:
In single typography, in the scope of about 80-150 sand mo(u)ld bag, print multiple sand mo(u)ld bags.
18. methods according to claim 16, is characterized in that, utilize the step of the multiple sand mo(u)ld bags of 3D press printing that add further to comprise:
The runner that printing is communicated with each sand mo(u)ld bag of multiple sand mo(u)ld bags.
19. methods according to claim 16, is characterized in that, the step that melted material is poured into the sand mo(u)ld bag of filling each selection in cast structure further comprises:
Tool steel is poured into cast structure.
20. methods according to claim 16, is characterized in that, the step that the sand mo(u)ld bag of selecting from multiple sand mo(u)ld bags is nested in the cast structure with the runner being communicated with the sand mo(u)ld bag of each selection further comprises:
Utilize upper and lower type assembly by melted material model casting in sand mo(u)ld bag.
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