CN101561674A - Molding method of components of heterogeneous materials - Google Patents
Molding method of components of heterogeneous materials Download PDFInfo
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- CN101561674A CN101561674A CNA2009100271252A CN200910027125A CN101561674A CN 101561674 A CN101561674 A CN 101561674A CN A2009100271252 A CNA2009100271252 A CN A2009100271252A CN 200910027125 A CN200910027125 A CN 200910027125A CN 101561674 A CN101561674 A CN 101561674A
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Abstract
The invention discloses a molding method of components of heterogeneous materials, comprising the following steps of: establishing a CAD model of a three-dimensional body, carrying out variegation on the CAD model, then carrying out discretization slicing delamination to obtain a series of two-dimensional slices with material information and structure information, converting the structure information of each slice into corresponding digital control processing programs, realizing precise accumulation of molding materials of each separated layer by digital control motion and opening and closing of a nozzle, accomplishing microdrop accumulation of the material of the layer according the above method under the control of control processing program of corresponding layer; spraying propping materials for padding, as propping, in areas of each layer which are not sprayed; bonding and overlaying layer by layer to produce the designed three-dimensional body finally; removing padded propping materials of each layer to obtain three-dimensional molded parts containing heterogeneous materials corresponding to computer solid models. The invention can produce heterogeneous materials and functional components with high molding precision and strength quickly, the process is simple, the production cost is low, and the choice of materials is wide.
Description
Technical field
The present invention relates to the method for forming parts of three-dimensional structure, is a kind of forming method that adopts the droplet ejection mode successively to make the 3 d part that contains heterogeneous material specifically.
Background technology
The aspects such as load-carrying parts that contain function element that the performance function part of heterogeneous material uses in fields such as military, Aero-Space, nuclear industry with its unique physics, mechanical property, minute vehicle structure, space power system have broad application prospects and are worth.
The preparation of this components of heterogeneous materials is if adopt preparation methods such as traditional chemical vapor deposition, electrolytic deposition, plasma spraying, owing to can not accurately control the position of each material phase, then can only prepare the fairly simple material model of shape, can not directly prepare the mechanism that part with complicated shape or many parts constitute.
Massachusetts Institute Technology has proposed to adopt the method for many material metals of symmetrical liquid drop injecting fabrication techniques product, it is the even metal molten drop that its principle is to use mechanical disturbance that laminar flow capillary metal jet is dispersed, the molten drop that produces is carried out selective charge, use the high-voltage electrostatic field accurately to locate metal drop then, be piled into out profiled member layer by layer.This method is plated metal directly, for the quick preparation of metal parts and the many material pieces preparations of Metal Substrate provides a thinking.But can only deposition of aluminum, the lower metal of fusing point such as zinc, copper, then can't realize for the moulding of the part that contains nonmetallic materials.
Existing a kind of based on discrete many material selectivity laser sintered (SLS) equipment that is shaped, can be used to make discontinuous many materials prototype; Also have a kind of many material powders spray appliance, be used for making 3 d function functionally gradient material (FGM) part based on SLS technology; Dalian University of Technology Guo Dongming, Jia Zhenyuan etc. have studied the geometry of Processing for Ideal Functional Material Components cad model and the description of material information, section algorithm of cad model etc., developed the formation system of Processing for Ideal Functional Material Components, the ABS silk that this system adopts the continuous injection mode of spiral squeezing type to extrude fusion from shower nozzle is made the multifunctional material part; Artificial bone scaffold that Tsing-Hua University's face Yongnian, Zhang Renji etc. have studied multiple-limb, sandwich construction intravascular stent and contained heterogeneous body porous communicating structure etc. has the making of the bioengineered tissue of gradient function; The Li Di of Xi'an Communications University dirt etc. has been studied the moulding process of making the silicon carbide ceramics member of complicated shape based on the photocuring rapid prototyping technology.
More than these forming methods or system that though is that all right is ripe, still need and further improve and development, also lay a good foundation for development of new material parts manufacturing technology.In these forming methods or the system, the moulding material that forming method was suitable for that has is very limited, the profiled member precision that the forming method that has is made is lower, and the shaping speed that has is slower, for precisely controlled in spatial dimension of the multiple material in the components of heterogeneous materials and moulding all has its limitation.
Summary of the invention
In order to overcome the deficiency of the components of heterogeneous materials that prior art can't the multiple material with complex composition of moulding, the invention provides a kind of forming method of components of heterogeneous materials.
The present invention solves its technical matters basic fundamental thinking: according to the part function requirement, by processing that the cad model of data layouts such as STL, VRML, WRL, PLY/ZCP is painted, reach the geometry topology of part and the concurrent designing of materials microstructure; The last color model that contains structure and material information is carried out slicing delamination, obtain a series of colored sections, and pairing color information of every layer machining cell and structural information are resolved, make it corresponding with shaping information; In forming process, adopt three-dimensional printing-forming technology, material powder is prepared into dilute suspension or is mixed with the composite fluid material, with the suspending liquid of preparation or composite fluid material by several, hundreds of even thousands of micro nozzles realize digitized droplet ejection, thereby make the structural member that contains many materials.
Components of heterogeneous materials by difference ingenious combinations organic and dead matter such as macromolecular material, low melting point alloy, pottery are produced can be widely used in fields such as aerospace industry, mechanical engineering, biomedical engineering.
1. macromolecule dissimilar materials part can be extensively in fields such as wear-resisting functions parts, artificial organs, resistant material chemical plant structure members, begin to be applied at biological medicine material (as body implant), function pressure sensitive (simultaneously have pressure-sensitive adhesive as macromolecule functionally gradient material (FGM) film, another side does not have cementability and the carrier-free pressure-sensitive adhesive film made), damping material aspects such as (changing, have the damping coating of excellent damping performance in gradient along thickness direction) at present as preparation.
2. but pottery-low-melting alloy Functionally Graded Materials part adopts the ceramic powders liquation (or solution) that contains different proportion pyrolytic material (or removable other material of other method) to make prefabricated component, but the stupalith middleware that pyrolytic material (or removable other auxiliary material of other method) can obtain having different stomatal frequencies is removed in heating, middleware is carried out sintering, obtain final part behind the infiltration low-melting alloy then.
But the part that 3. has different stomatal frequency Gradient distribution adopts the powder liquation (or solution) of the workpiece material that contains different proportion pyrolytic material (or removable other material of other method) to make prefabricated component, but the middleware that pyrolytic material (or removable other auxiliary material of other method) can obtain having different stomatal frequencies is removed in heating, further obtains final part behind the sintering.
4. the functionally gradient part obtains the functionally gradient part with prefabricated of the liquation of a plurality of shower nozzle direct injection liquid materials, material powder or solution form metal-metal, polymer-metal, polymkeric substance-Magnaglo and polymkeric substance-polymkeric substance constant gradient after corresponding postprocessing working procedures.
Because advantages such as components of heterogeneous materials has raising information transmitting accuracy, minification, conforms, weight reduction, thereby also can be used for preparing micro element, integrated transducer, intelligence structure etc.
The object of the present invention is to provide and a kind ofly adopt the droplet ejection mode to make high precision fast, cheaply, contain the forming method of the complex three-dimensional part of heterogeneous material.
The forming method of components of heterogeneous materials of the present invention is that the following technical scheme of utilization realizes goal of the invention:
A. set up the Computerized three-dimensional cad model of object, according to the material distribution characteristics of profiled member, to the three-dimensional CAD model processing of painting;
B. the three-dimensional CAD model that will go up look carries out the discretize slicing delamination to be handled, and obtains containing a series of two dimension slicings of material information and structural information;
C. the structural information with each section changes into corresponding nc program, with the corresponding ON/OFF with the control nozzle with each micro nozzle of the material information of each section, realizes the accurate accumulation of each layering moulding material by numerical control campaign and nozzle ON/OFF;
D. the computer control minute nozzle is done the forming moving of setting and is sprayed required each phase liquid material or particle selectively according to material information on the shaping work face according to every layer shaping information, and liquid material solidifies the back and forms the synusia equiform with this formable layer information, that certain intensity is arranged; Spray propping material in not injected zone with other minute nozzle and fill, as the support of next synusia;
E. after treating that one deck accumulation is finished, bed thickness distance of working table movement, under the nc program control of equivalent layer, each micro nozzle is finished the droplet of this layer material as stated above and is piled up, bonding superposes so layer by layer, finally produces the three-dimensional body that contains heterogeneous material of design;
F. remove the propping material of every layer of filling, promptly obtain and the corresponding three-dimensional shaped parts that contains heterogeneous material of computer mock-up.
Describedly be, to represent or certain phase material of corresponding part with certain specific color according to the distribution of material requirement of the part of making to the three-dimensional CAD model colouring disposal route of handling of painting; For the part that contains multiple or heterogeneous material, represent or the material distribution characteristics of corresponding part with the COLOR COMPOSITION THROUGH DISTRIBUTION function; Or the COLOR COMPOSITION THROUGH DISTRIBUTION image that forms with other modes or figure is represented or the material distribution characteristics of corresponding part.
The colouring of three-dimensional CAD model can take following several modes one or more carry out:
A. directly the cad model of 3D sculpting software design is painted;
B. paint after the cad model of 3D sculpting software design being converted to data layouts such as VRML, PLY/ZCP, WRL;
C. the cad model of 3D sculpting software design is carried out format conversion, especially paints after being converted into the STL form;
After the cad model of 3D sculpting software design was converted to the STL form, the painting methods under software environment can adopt following one or more combination:
1. single dough sheet colouring; Or
2.CAD formwork shell surface colouring; Or
3.CAD each entity part colouring of model; Or
4. by the colouring of mouse drag window; Or
5. colouring automatically.
D. after directly the cad model of 3D sculpting software design being painted, be the last model conversion of crossing look data layouts such as VRML, PLY/ZCP, WRL, STL again.
Painting methods to the cad model of 3D sculpting software design can adopt following one or more combination:
1. open this data file by all kinds of text edit softwares, in this document, increase or revise corresponding color information and paint; Or
2. the cad model of 3D sculpting software design is carried out format conversion, carry out slicing delamination again, the section that is obtained is painted; Or
3. under the design software environment, cad model is painted.
For the situation that contains multiple or heterogeneous material in some or several local features of part or the one-piece parts simultaneously, can adopt the processing of painting of COLOR COMPOSITION THROUGH DISTRIBUTION function, the multiple or heterogeneous material that this distribution function can reflect part inside is at short transverse and horizontal direction change procedure continuously.
For the situation that contains multiple or heterogeneous material in some or several local features of part or the integral body simultaneously, the method that can adopt the pinup picture mode to carry out color bleeding is finished colouring and is handled.So-called pinup picture mode is exactly distribution of material figure or image by other softwares or the part that method obtained, under software environment, videos to the surface of three-dimensional CAD solid model, and specifies color bleeding or material length of penetration.
Described sprayable moulding material is:
A. low-melting alloy, lipid material, all kinds of wax, various thermoplasticss etc. were heated into molten state before spraying; Or
B. liquid can contain colloid or nanoparticle fillers, as silica, organism, metal or alloy; Or
C. the liquid of fusion viscosity at room temperature is 1-10000cps.
Described propping material is:
A. more low-melting animal wax, vegetable wax, mineral wax or synthetic wax, fusing point is at 40-160 ℃; Or
B. by the more diffluent lipid material of organic solvent dissolution; Or
C. propping material can be to be easy to water-soluble ammonium chloride; Or
D. the easy organic naphthalene that distils.
Described sprayable moulding material, moulding material can be the more sensitive photosensitive resin of light ratio, and this resinoid is characterised in that:
A. comparatively responsive to the light of wavelength 200-800nm, the ultraviolet-sensitive of 300-400nm especially, such liquid component comprises oligomer, activated monomer, light trigger, colorant and other auxiliary agent;
B. liquid can contain colloid or nanoparticle fillers, as silica, organism, metal or alloy;
C. liquid viscosity at room temperature is 1-10000cps;
D. liquid can spray in 0-130 ℃ temperature range, and in this temperature range, the viscosity of liquid is lower than 2000cps.
The required material of profiled member of making heterogeneous material can be low-melting alloy, lipid material, all kinds of wax, various thermoplasticss etc., wherein also comprises photosensitive resin in the lipid material, and this resinoid mainly is comparatively responsive to the light of wavelength 200-1000nm.Its composition comprises oligomer, activated monomer, light trigger, colorant and other auxiliary agent.(1) oligomer is the low polymer that contains unsaturated functional group, and its indefiniteness example is polyurethane acrylate, polyester acrylate, polyoxyalkylene acrylate fat, epoxy acrylate and various modified acroleic acid fat.Preferred this oligomer is a liquid, has required low viscosity to keep liquid, and preferably its functionality greater than one.If oligomer is the material of on-liquid state, it should dissolve in the liquid component of described active substance.(2) activated monomer mainly is in order to improve the viscosity of oligomer.The bifunctionality activated monomer comprises and at least aly is selected from 1, the monomer of 4-butylene glycol, neopentyl glycol, ethylene glycol, diglycol, triethylene glycol, polyglycol and diacrylate fat.Three or higher official can activated monomer comprise at least a monomer that is selected from ethoxylated trimethylolpropane acrylate and propoxylated glycerol acrylate.Preferred bifunctional monomer is tri (propylene glycol) diacrylate (TPGDA) and 1,6 hexanediol diacrylate (HDDA), and preferred trifunctional monomer is trimethylolpropane triacrylate (TMPTA), pentaerythritol triacrylate (PETA).(3) light trigger absorbs energy and excites generation free radical or kation.Free radical photo-initiation is derivant (as benzoin ether, benzil ketals etc.), acetophenone derivs (as to phenoxy group 2 α, 12 hydroxyl ring ethylbenzene ethyl ketones etc.), the aromatic ketone photoinitiator (as benzophenone, chlorinated diphenyl ketone etc.) of benzoin and benzil ketals; Cation light initiator is the acylphosphine compound.(4) colorant has determined the color and the optical characteristics of three-dimensional structure, is preferably thermally-stabilised and water-insoluble.(5) auxiliary agent comprises spreading agent, lubricant, intensifier, filling agent, accelerator etc., and it has influence on the term of validity of curing rate, use of blasting materials and thicknesses of layers etc.
Can contain fillers such as colloid or nano particle in the sprayable moulding material, as silica, organism, metal or alloy.The liquid viscosity at room temperature that is mixed with above certain class or a few class particles is 1-10000cps.
The propping material of filling every layer of white space or non-entity area can be more low-melting material, as fusing point at 20-180 ℃ animal wax, vegetable wax, mineral wax, synthetic wax etc.; The material that can be easy to dissolve by organic solvent is as the lipid material; Can be to be easy to water-soluble material, as inorganic salts materials such as ammonium chlorides; Also can be the material that easily distils, as organic naphthalene material.
Be pointed out that, though moulding material is known as " moulding material " or " propping material " in this patent, but these materials also can be replaced mutually, promptly make three-dimensional structure with " propping material ", form the support section of this three-dimensional structure with " moulding material ".But generally speaking, wish that the material be used to form three-dimensional structure has the performance that is superior to the material that is used to form support section, as have more high strength, performance such as high rigidity, faster curing rate more.
It is a plurality of making the minute nozzle that uses in the process of components of heterogeneous materials, can spray all kinds of fluent materials that constitute the three-dimensional structure body and the propping material that constitutes every layer of support of three-dimensional structure respectively.The aperture size of nozzle be 1-200 μ m and (or) the single fine droplet volume that sprayed is 1-2000pl.
Compared with prior art, the invention has the advantages that: 1. the material under liquid material or the molten condition is formed micron-sized droplet by piezoelectricity mode or heat foamable mode and from minute nozzle, spray, the forming accuracy height.2. the droplet of Pen Sheing with solidify rapidly after profiled surface contacts, form fine and close material or part, so the intensity height of profiled member.3. propping material is more easily removed, and functionally gradient material (FGM) that makes and part last handling process are comparatively simple, low cost of manufacture.
Description of drawings
Shown in Figure 1 is the moulding process flow diagram of making components of heterogeneous materials;
Shown in Figure 2 is the former structure diagram of making components of heterogeneous materials;
Shown in Figure 3 is makes the heterogeneous metal part synoptic diagram of low-melting alloy such as slicker solder.
Comprise nozzle bracket 1, moulding material nozzle 2, propping material nozzle 3 among the above figure, nozzle bracket X is to guide rail 4, and nozzle bracket Y is to guide rail 5, nozzle cleaning groove 6, shaping substrate 7, moulding entity area 8, moulding supporting zone 9, Z is to worktable 10, computing machine 11, moulding material nozzle control circuit 12, printing head X-Y position control circuit 13, lifting table control circuit 14, propping material nozzle control circuit 15, tin shower nozzle 21, plumbous shower nozzle 22 and propping material 23 shower nozzles.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
As shown in Figure 1 and Figure 2, it is as follows to adopt the droplet ejection mode successively to make the detailed process of components of heterogeneous materials:
Go out the three-dimensional CAD model of the three-dimensional structure of required processing by Computer Design with high-speed computation ability, functional requirement according to this part, this three-dimensional CAD model is carried out the design of material, promptly use the color representation material, to this CAD entity slicing delamination, form a series of two dimension slicings that contain structural information and material information afterwards.The thickness of each section can be identical, also can be inequality, and the thickness of each section is at 1 μ m-300 μ m.Computing machine 11 is controlled each mechanism respectively according to the shaping information of each layer and is done the coordinated movement of various economic factors.Particularly, when making beginning, computing machine 11 is issued moulding material nozzle control circuit 12 to the ground floor machining information, certain or certain several shower nozzles that moulding material nozzle control circuit 12 drives in the moulding material nozzles 2 eject the liquid condition shaping material by the shape of this layer, solidify rapidly subsequently, form entity area 8, when moulding material nozzle 2 sprays liquid material, propping material nozzle 3 sprays the zone that propping material is filled the not injected liquid condition shaping material of this layer, forms supporting zone 9.Then, the shaping information of the following one deck of computing machine handle is issued moulding material nozzle control circuit 12 and is ejected liquid condition shaping material and propping material, and forms new cured layer.So repeatedly, printing from level to level and bonding, thus quick Fabrication goes out three-dimensional structure.Remove every layer propping material, and, can obtain quality part preferably through certain post-processing.
Shown in Figure 2 is the apparatus structure framework synoptic diagram of making three-dimensional structure.The structure that application the present invention makes the shaped device (except that computing machine) of components of heterogeneous materials comprises: nozzle bracket 1, moulding material nozzle 2, propping material nozzle 3, nozzle bracket X is to guide rail 4, nozzle bracket Y is to guide rail 5, nozzle cleaning groove 6, shaping substrate 7, Z is to worktable 10, moulding material nozzle control circuit 12, printing head X-Y position control circuit 13, lifting table control circuit 14, propping material nozzle control circuit 15 etc.Nozzle bracket 1 is done two-way linear along directions X and is moved; Nozzle is done plane motion to guide rail 4, nozzle bracket Y to guide rail 5 along nozzle bracket X in X-Y plane; Z moves up and down to worktable 10 vertical direction.Every injection a period of time, moulding material nozzle 2 cleans in nozzle cleaning groove 6 under the drive of nozzle bracket 1, and is not blocked to guarantee shower nozzle.
Shown in Figure 3 is makes the heterogeneous metal part synoptic diagram of low-melting alloy such as slicker solder, and physical construction can adopt structure same as shown in Figure 2, also can adopt version inequality.Among Fig. 3, three shower nozzles are respectively solid material tin shower nozzle 21, plumbous shower nozzle 22 of solid material and propping material shower nozzle 23, wherein the ejection temperature of tin shower nozzle is 180-250 ℃ (tin herein can be pure tin, it also can be alloy tin, determine the ejection temperature according to the fusing point of the material of selecting for use), the ejection temperature of plumbous shower nozzle is 310-350 ℃, and (lead herein can be pure lead, also can be alloy lead, determine the ejection temperature according to the fusing point of the material of selecting for use), propping material can be selected pottery for use, metal, powder particles such as gypsum, also can select the fusing point alloy material low than solid material (heat fused before spraying) for use, its concrete implementation step is as follows:
1. in computing machine 11, generate the three-dimensional CAD solid model of tin/plumbous components of heterogeneous materials;
2. according to the request for utilization of part, carry out the distribution of material design of part, color and material are mapped;
3. according to machining precision and design of part designing requirement, by certain thickness layering, every layer structural information and material information are converted part C AD model the ON/OFF information of numerical control movement instruction and each nozzle to;
4. tin, the lead that will deliver in the shower nozzle separately are heated to molten state, according to above-mentioned corresponding nc program determined ejection position and beginning and ending time, each shower nozzle is under the effect of corresponding shower nozzle driver element, each moulding material is under high pressure extruded minute nozzle respectively, be injected into the assigned address on the worktable, carry out the droplet of material and pile up;
5. computer control shower nozzle that propping material is housed ejects propping material at the white space of this layer;
6. after treating that one deck accumulation is finished, under the control of control system, worktable moves down a bed thickness distance, under the control of the nc program of equivalent layer, each shower nozzle is ejected into tin, the lead material droplet of fusion on the above-mentioned profiled surface again, finish the droplet of this layer material part and pile up, so be layering until finishing whole tin/plumbous functionally gradient material (FGM) part forming;
7. remove when supporting, if the choice of powder particle as propping material, is removed propping material with brush or hair-dryer class instrument by hand and got final product; If select for use low-melting alloy, the tin that contains propping material/plumbous functionally gradient material (FGM) part of making is put into well heater slowly be heated to the propping material melting temperature and can remove propping material as propping material.
In the process of above-mentioned preparation heterogeneous material and part, control system can the Control work platform the action of moving or control each nozzle, making nozzle carry out droplet at assigned address selectively piles up, and in operating process, droplet can interconnect and be continuous shape, also can be to be separated from each other and to be interrupted shape, the number of nozzle is not limited to three, but hundreds of of as many as, can corresponding increase by the kind of material, promptly can realize material and performance arbitrarily, can form the shape and the gradient of any complexity between the different materials at any part of part, final to satisfy the special request for utilization of heterogeneous material and part.
Claims (9)
1, a kind of forming method of components of heterogeneous materials, its step is as follows:
A. set up the Computerized three-dimensional cad model of object, according to the material distribution characteristics of profiled member, to the three-dimensional CAD model processing of painting;
B. the three-dimensional CAD model that will go up look carries out the discretize slicing delamination to be handled, and obtains containing a series of two dimension slicings of material information and structural information;
C. the structural information with each section changes into corresponding nc program, with the corresponding ON/OFF with the control nozzle with each micro nozzle of the material information of each section, realizes the accurate accumulation of each layering moulding material by numerical control campaign and nozzle ON/OFF;
D. after treating that one deck accumulation is finished, bed thickness distance of working table movement, under the nc program control of equivalent layer, each micro nozzle is finished the droplet of this layer material as stated above and is piled up;
E. fill at every layer not injected area spray propping material, as support;
F. bonding superposes layer by layer, finally produces the three-dimensional body that contains heterogeneous material of design;
G. remove the propping material of every layer of filling, promptly obtain and the corresponding three-dimensional shaped parts that contains heterogeneous material of computer mock-up.
2, according to the forming method of the described components of heterogeneous materials of claim 1, it is characterized in that: described three-dimensional CAD model is painted to handle be:
A. according to the distribution of material requirement of the part of making, represent or certain phase material of corresponding part with certain specific color;
B. for the part that contains multiple or heterogeneous material, represent or the material distribution characteristics of corresponding part with the COLOR COMPOSITION THROUGH DISTRIBUTION function;
3, according to the forming method of claim 1 or 2 described components of heterogeneous materials, it is characterized in that: described three-dimensional CAD model is painted to handle and can be taked following one or more modes:
A. directly the three-dimensional CAD model of 3D sculpting software design is painted;
B. paint after three-dimensional CAD model being converted to VRML, PLY/ZCP or WRL data layout;
C. paint after three-dimensional CAD model being converted into the STL form;
D. directly to after the three-dimensional CAD model colouring, be the last model conversion of crossing look VRML, PLY/ZCP, WRL or STL data layout again.
4, according to the forming method of claim 1 or 2 described components of heterogeneous materials, it is characterized in that: the painting methods to three-dimensional CAD model adopts following one or more combination:
A. open this data file by all kinds of text edit softwares, in this document, increase or revise corresponding color information and paint;
B. three-dimensional CAD model is carried out format conversion, carry out slicing delamination again, the section that is obtained is painted;
C. under the design software environment, three-dimensional CAD model is painted.
5, according to the forming method of claim 1 or 2 described components of heterogeneous materials, it is characterized in that: described colouring disposal route to three-dimensional CAD model is, after three-dimensional CAD model is converted to the STL form, one or more method combination colourings below under software environment, adopting:
A. single dough sheet colouring;
The colouring of b.CAD formwork shell surface;
Each the entity part colouring of c.CAD model;
D. by the colouring of mouse drag window;
E. colouring automatically.
6, according to the forming method of claim 1 or 2 described components of heterogeneous materials, it is characterized in that: described colouring to three-dimensional CAD model is handled, for the situation that contains multiple or heterogeneous material in some or several local features of part or the integral body simultaneously, the method that can adopt the pinup picture mode to carry out color bleeding is finished colouring and is handled; Described pinup picture mode is exactly distribution of material figure or image by other softwares or the part that method obtained, under software environment, videos to the surface of three-dimensional CAD solid model, and specifies color bleeding or material length of penetration.
7, according to the forming method of the described components of heterogeneous materials of claim 1, it is characterized in that: described moulding material is:
A. low-melting alloy, lipid material, all kinds of wax, various thermoplasticss etc. were heated into molten state before spraying; Or
B. the liquid that contains colloid or nanoparticle fillers, described nanoparticle fillers is: silica, organism, metal or metal alloy; Or
C. the liquid of fusion viscosity at room temperature is 1-10000cps.
8, according to the forming method of the described components of heterogeneous materials of claim 1, it is characterized in that: described propping material is:
A. animal wax, vegetable wax, mineral wax or synthetic wax, fusing point is at 40-160 ℃; Or
B. easily by the lipid material of organic solvent dissolution; Or
C. be easy to water-soluble ammonium chloride; Or
D. the easy organic naphthalene that distils.
9, according to the forming method of the described components of heterogeneous materials of claim 1, it is characterized in that: described moulding material can be liquid light maleate resin, is characterised in that:
A. comparatively responsive to the light of wavelength 200-800nm;
B. contain colloid or nanoparticle fillers, described nanoparticle fillers is silica, organism, metal or metal alloy;
C. viscosity at room temperature is 1-10000cps;
D. viscosity is lower than 2000cps in 0-130 ℃ temperature range.
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