CN106182772A - Multiple material rapid prototyping shaped device and method - Google Patents
Multiple material rapid prototyping shaped device and method Download PDFInfo
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- CN106182772A CN106182772A CN201610589390.XA CN201610589390A CN106182772A CN 106182772 A CN106182772 A CN 106182772A CN 201610589390 A CN201610589390 A CN 201610589390A CN 106182772 A CN106182772 A CN 106182772A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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Abstract
Multiple material rapid prototyping shaped device and method, belong to rapid prototyping field shaping technique.The present invention is the problem that product material is single, forming shape is limited and formed precision is low in order to solve existing rapid shaping technique.Device includes that frame, feed drive machine, conveying head, feed bin, recycling cavity, guide rail, defective material to remove machine, Slicking apparatus, forming cavity, light source, light-conducting system, imaging system and controller；The central area of frame is arranged to die cavity, one end of frame arranges feed near frame and drives machine, feed drives the outfan of machine to connect conveying head, the other end of frame arranges guide rail near frame along the direction parallel with frame, connecting defective material on guide rail and remove machine, the other end of frame also sets up Slicking apparatus in forming cavity peripheral frame；Method is sintered by constituency, solidifies and by the way of gasification and combinations thereof, can realize the rapid shaping that final products are made of a variety of materials.The present invention is for the rapid prototyping molding of multiple material.
Description
Technical field
The present invention relates to multiple material rapid prototyping shaped device and method, belong to rapid prototyping field shaping technique.
Background technology
Rapid prototyping moulding process is widely known by the people, and such as the Layered Manufacturing Technology using oneself to know, connects one layer of order heap with one layer
Long-pending many layers gradually form goods, such as metal mold, prototype etc..A kind of variant of this method is referred to as SLA system, than
As, Chinese patent " digital projection photocurable rapid shaping apparatus and method ", Publication No. CN 1850494A；And Chinese patent
" method using the rapid shaping of shadow casting technique ", Publication No. CN100391721C；They use computer-controlled focusing
UV laser scanning photopolymerization liquid polymers, such as the liquid level of photosensitive resin, optionally makes polymer polymerizing, forms first solid
Body polymeric layer.This solid polymeric layer sinks in polymer pool subsequently, and such one layer of new liquid polymer layer covers solid
Body layer.The second solid polymeric layer is produced, and so forth, until the solid repeatedly overlapped gathers again with laser polymerization process
Compound layer forms required goods.
The another kind of variant of Layered Manufacturing Technology is referred to as selective laser sintering SLS technique, the most computer-controlled
Laser beam makes loose compacted powder, and the composite bed selection area such as plastics, metal, pottery, wax etc. successively sinters, until whole system
The whole construction complete of product.Chinese patent " the quick shaping system of a kind of direct manufacture metal parts of Publication No. CN1205951C
System " think, if metal dust is the most melted in above-mentioned manufacture process, then the method should be separated with common laser sintering zone
Coming, referred to as selective laser melts SLM；Also have in document and be called direct metal laser sintering Direct metal
Laser sintering, DMLS；It is not added with SLS and SLM distinguishing, referred to as selective laser sintering herein.
Another variant of Layered manufacturing is referred to as 3 D-printing flash mould Three Dimensional
Printing, 3DP technology, also referred to as 3-D spraying bonding, it is to be realized by computer-controlled ink jet printing device, such as, connect
Continuous ejection-type or drop on demand type printing device, specifically have two kinds of ways of realization: in first kind of way, equipment refers to according to computer
Binding agent stream is sprayed onto the selection area of ground floor loose particles from one or more nozzles by fixed pattern.Then, loose
The second layer of grain is placed on the top of ground floor, and simultaneously along with the shape of ground floor, ink jet printer sprays binding agent selectively and flows to
On second layer granule.Reheat or be dried after making binding agent solidification, required three-dimensional body can be formed.In the second way,
The drop that ink-jet printer direct-injection goes out, such as photosensitive resin, be the most successively cured as three-dimensional shaped by the mode such as illumination, heating
Body.
The another kind of variant of Layered Manufacturing Technology is referred to as laminated solid mass and manufactures LOM, and principle is to be layered geometry according to part
Information cutting foil, the most frequently used raw material is paper, the synusia bonding one-tenth 3D solid that will be obtained.First layer overlay during manufacture
Scribble the foil of PUR, then cut out this layer of profile with laser under the control of the computer, non-part portion all shred so that
In removal.After completing when one layer, repave last layer foil, roll with roller and heat, to solidify adhesive, make newly spread
Layer is strongly adhered on formed body, then cuts the profile of this layer, the most repeatedly until completion of processing, finally removes chopping portion
Divide to obtain complete part.The realization of Layered manufacturing is in addition to above-mentioned major way, and also selective blending covers, and also referred to as welds heap
Long-pending.
Traditional rapid prototyping molding and manufacture method there is problems in that
Product material is single: in prior art, mostly can not realize comprising multiple different functionalities material in same finished product
Material.Part can realize the molding of many materials, and material category is the most extremely limited, and selective blending coating method can only use in the product
The metal material that fusing point is close, fused deposition method FDM then can only use different types of hot melt high score in identical product
Sub-material, but all cannot realize the variation of material type, such as metal-ceramic composite material.
Forming shape is limited: a lot of existing quick molding methods cannot manufacture the product of arbitrarily complicated shape, such as selectivity
Cladding is limited to the technique that molten metal drop is piled up, it is impossible to manufacture the part containing hanging structure, such as cantilever beam, umbrella knot
Structure；LOM method can not manufacture the part containing complicated cavity；This makes tradition rapid prototyping molding and manufacture method to produce
Product be very limited.
Formed precision is the highest: the technology of tradition rapid shaping, such as selectivity melting and coating technique is limited to drop and freely drips
Technique, it is impossible to realize the most three-dimensionally shaped, existing based on welding pile up the direct rapid molding device of many metals, it is desirable to
Synchronizing in forming process to carry out high-rate wireless LAN to improve Product Precision, this brings restriction to forming shape again, and increases
Add equipment and realize difficulty and cost.
Post processing is loaded down with trivial details: the device after tradition rapid shaping needs manual removal residual materials and backing material, and efficiency is relatively
Low and be difficult to automatization.
Summary of the invention
The product material that the invention aims to solve existing rapid shaping technique is single, forming shape is limited and becomes
The problem that type precision is low, it is provided that one kind of multiple material rapid prototyping shaped device and methods.
Multiple material rapid prototyping shaped device of the present invention, it include frame, feed drive machine, conveying head, feed bin,
Recycling cavity, guide rail, defective material remove machine, Slicking apparatus, forming cavity, light source, light-conducting system, imaging system and controller,
The central area of frame is arranged to die cavity, is supported by the piston of lifting controllable bottom forming cavity；One end of frame
Arranging feed near frame and drive machine, feed drives the outfan of machine to connect conveying head, and the discharging opening position of conveying head corresponds to
Forming cavity；It is positioned at inside feed driving machine, multiple feed bin and recycling cavity, each feed bin are set along the direction parallel with described frame
Conveying head is connected by conveying pipeline；
The other end of frame arranges guide rail near frame along the direction parallel with frame, guide rail connects defective material and removes machine,
The other end of frame also sets up Slicking apparatus in forming cavity peripheral frame；
The overhead corresponding with forming cavity arranges light source, light-conducting system and imaging system, and the light that light source sends is successively through leading
After photosystem and imaging system, irradiate the region for forming of current molding layering on forming cavity；
Controller is for controlling the duty of each controlled assembly.
Multiple material rapid prototyping forming method of the present invention, including following two technical scheme:
The first is: multiple material rapid prototyping forming method, this forming method is based on multiple material rapid prototyping molding
Device realizes, and this forming method is the forming method of two kinds of structural materials；It comprises the following steps:
Step one: use graphics software to generate the threedimensional model of product to be formed, and threedimensional model is divided into multiple points
Portion, the structural material that each branch of labelling uses；
Step 2: threedimensional model is saved as the increasing material manufacturing documentation form of standard, and records corresponding with threedimensional model
Branch's shape, material and colouring information；
Step 3: use three-dimensional slice software that the threedimensional model in step 2 is cut layering, be layered further according to each
Structural material generates the hierarchical control command file of rapid shaping, and hierarchical control command file includes following information:
Beam scanning motion track when a. using SLA mode that each layering is solidified or sintered or ray cast figure
Case；
B. the parameter that the structural material shaping characteristic of each layering is determined；
C. the parameter that the structural material physicochemical characteristics of each layering is determined；
Step 4: controller controls feed and drives machine to drive conveying head, and controls conveying head structure for conveying materials A to currently
Molding layering operation interval and strike off, then according to hierarchical control command file control make light source pass through light-conducting system and imaging
Determine current region for forming after system, current region for forming is sintered or solidifies；
Step 5: use defective material to remove machine and remove relict texture materials A；
Step 6: control the current residual operation interval that is layered to current molding of conveying head structure for conveying material B and strike off,
Then control to make light source after passing through light-conducting system and imaging system, determine current region for forming according to hierarchical control command file, right
Current region for forming is sintered or solidifies；
Step 7: use defective material to remove machine and remove relict texture material B；
Step 8: control the conveying head conveying current residual operation interval that is layered of backing material to current molding and strike off,
Then control to make light source after passing through light-conducting system and imaging system, determine current region for forming according to hierarchical control command file, right
Current region for forming is sintered or solidifies；
Step 9: forming cavity declines the work space of a layer height, and repetition step 4 is to step 8, until completing
Whole forming processes of product to be formed；
Step 10: after whole molding of product to be formed complete, according to the characteristic of backing material, by heating, dissolving, corruption
Erosion, illumination, peel off or break into pieces, remove backing material, complete the prototype molding of product to be formed.
The second is: multiple material rapid prototyping forming method, and this forming method is based on multiple material rapid prototyping molding
Device realizes, and this forming method is the forming method of two kinds of structural materials；It comprises the following steps:
Step one: use graphics software to generate the threedimensional model of product to be formed, and threedimensional model is divided into multiple points
Portion, the structural material that each branch of labelling uses；
Step 2: threedimensional model is saved as the increasing material manufacturing documentation form of standard, and records corresponding with threedimensional model
Branch's shape, material and colouring information；
Step 3: use three-dimensional slice software that the threedimensional model in step 2 is cut layering, be layered further according to each
Structural material generates the hierarchical control command file of rapid shaping, and hierarchical control command file includes following information:
Beam scanning motion track when a. using SLA mode that each layering is solidified or sintered or ray cast figure
Case；
B. the parameter that the structural material shaping characteristic of each layering is determined；
C. the parameter that the structural material physicochemical characteristics of each layering is determined；
Step 4: controller controls feed and drives machine to drive conveying head, and controls conveying head conveying backing material to currently
Molding layering whole operation interval and strike off, then according to hierarchical control command file control make light source pass through light-conducting system and
After imaging system, whole operation interval is sintered or solidifies；
Step 5: controller makes light source pass through light-conducting system and imaging system according to hierarchical control command file by control
After, the forming area of structural material A in current whole operation interval is carried out selectivity gasification；
Step 6: controller controls conveying head structure for conveying materials A and to current forming area and strikes off, then according to layering
After control instruction file makes light source pass through light-conducting system and imaging system, current forming area is sintered or solidifies；
Step 7: controller makes light source pass through light-conducting system and imaging system according to hierarchical control command file by control
After, the forming area of structural material B in current whole operation interval is carried out selectivity gasification；
Step 8: controller controls conveying head structure for conveying material B and to current forming area and strikes off, then according to layering
After control instruction file makes light source pass through light-conducting system and imaging system, current forming area is sintered or solidifies；
Step 9: forming cavity declines the work space of a layer height, and repetition step 4 is to step 8, until completing
Whole forming processes of product to be formed；
Step 10: after whole molding of product to be formed complete, according to the characteristic of backing material, by heating, dissolving, corruption
Erosion, illumination, peel off or break into pieces, remove backing material, complete the prototype molding of product to be formed.
Advantages of the present invention: apparatus of the present invention are used for producing three-dimensional body, breaches the limitation of existing equipment.It makes up
The deficiency of traditional rapid prototyping forming technique, it is achieved that arbitrary shape high accuracy composite rapid prototyping molding and manufacture,
Rapid prototyping forming method can be significantly expanded and produce the scope of product, properties of product are greatly improved.
The inventive method is sintered by constituency, solidifies and by the way of gasification and combinations thereof, can realize final products by multiple
The rapid shaping of material composition.
Specific as follows:
1, material variation: the present invention can make product with independent assortment various structures material, supports metal material, can burn
Combination between the Inorganic Non-metallic Materials of knot, the sinterable or macromolecular material of solidification, such as various metals composite, metal-
The chimeric composite of pottery, metal-macromolecule is fitted together to composite, and inorganic non-metallic-macromolecule is fitted together to composite etc..
2, realize arbitrary shape product manufacturing: the inventive method can automatically generate backing material, arbitrary shape can be manufactured
The product of shape, as comprised the product of complicated cavity or overhanging portion.
3, high-precision modeling: the formed precision of the present invention is not less than the allusion quotation of typical accuracy about 0.15mm and SLA of tradition SLS
Type precision 0.02mm, is significantly higher than typical accuracy 1mm of selectivity cladding, and owing to using sintering or curing process, does not has FDM
Or the alias of LOM.
4, post processing is simple: the present invention manufacture product backing material minimizing technology use heating, dissolving, burn into illumination,
Peeling off or break into pieces, essentially identical with the releasing process of casting, technique is simple, and efficiency is high and easily realizes automatization.
Accompanying drawing explanation
Fig. 1 is the structural representation of multiple material rapid prototyping shaped device of the present invention；
Fig. 2 be the operation interval that is layered of structure for conveying materials A to current molding described in detailed description of the invention two step 4 also
The structural representation struck off；The rightest oblique line represents structural material A；
Fig. 3 is to determine the current region for forming of structural material A in detailed description of the invention two step 4 and be sintered or solid
The structural representation changed；Wherein oblique cross wires represents cured structural material A；
Fig. 4 is the structural representation after removing relict texture materials A in detailed description of the invention two step 5；
Fig. 5 is the current residual that described in detailed description of the invention two step 6, structure for conveying material B is layered to current molding
Operation interval the structural representation struck off；Wherein vertical line represents structural material B；
Fig. 6 is to determine the current region for forming of structural material B in detailed description of the invention two step 6 and be sintered or solid
The structural representation changed；Wherein grid lines represents cured structural material B；
Fig. 7 is the structural representation after removing relict texture material B in detailed description of the invention two step 7；
Fig. 8 is to carry the current residual work that backing material to current molding is layered described in detailed description of the invention two step 8
Make structural representation that is interval and that strike off；The most left oblique line represents backing material；
Fig. 9 is to determine the current region for forming of backing material in detailed description of the invention two step 8 and be sintered or solidify
Structural representation；The most left oblique line gray area represents cured backing material；
Figure 10 is the structural representation after two molding layering molding of detailed description of the invention two.
Detailed description of the invention
Detailed description of the invention one: present embodiment is described below in conjunction with Fig. 1, multiple material described in present embodiment is the most former
Type shaped device, it includes that frame 1, feed drive machine 2, conveying 3, feed bin 4, recycling cavity 5, guide rail 6, defective material to remove machine 7, scrape
Flat machine 8, forming cavity 9, light source 10, light-conducting system 11, imaging system 12 and controller,
The central area of frame 1 is arranged to die cavity 9, is supported by the piston of lifting controllable bottom forming cavity 9；Frame 1
One end arranges feed near frame and drives machine 2, and feed drives the outfan of machine 2 to connect conveying 3, the discharging opening position of conveying 3
Put corresponding to forming cavity 9；It is positioned at feed and drives inside machine 2, multiple feed bin 4 is set along the direction parallel with described frame and reclaims
Chamber 5, each feed bin 4 connects conveying 3 by conveying pipeline；
The other end of frame 1 arranges guide rail 6 near frame along the direction parallel with frame, guide rail 6 connects defective material and removes
Machine 7, the other end of frame 1 also sets up Slicking apparatus 8 in forming cavity 9 peripheral frame；
The overhead corresponding with forming cavity 9 arranges light source 10, light-conducting system 11 and imaging system 12, the light that light source 10 sends
Successively after light-conducting system 11 and imaging system 12, irradiate the region for forming of current molding layering on forming cavity 9；
Controller is for controlling the duty of each controlled assembly.
It also includes temperature-controlling system, and temperature-controlling system is used for the heating or cold on forming cavity 9 during formed product to be formed
But.
Light source 10 can comprise one or more, and light source can be laser instrument, it is desirable to its wavelength is in 270nm 11 μm；
Can also be LED, Metal halogen lamp, high voltage mercury lamp or xenon lamp；Light-conducting system 11 can realize light beam by refraction, reflection and spectroscopic modes
Transmission, it comprises expanding, collimating and converge assembly of necessity.Forming cavity 9 and imaging system 12 belong to shaped device, imaging
System 12 can be one or more sets, and shaped device also includes with heating and/or the temperature-controlling system of refrigerating function, and air
Cleaning system.Imaging system is with scanning or projection pattern work, and scanning can be realized by galvanometer, it is also possible to by mobile leaded light
The light-beam position of system output realizes；Projection can be by DMD, LCos and other reflector device imagings, it is also possible to by right
LCD transmission components and parts imaging or OLED, fluorescent screen and other self-luminous components and parts imagings.Forming cavity upper surface is working face,
On working face, the upper surface space of molded part is work space.Slicking apparatus 8 moves back and forth along guide rail and is scraped by working surface
Flat.
Feeding device comprises more than one feed bin 4, controller select the raw material in one or more feed bin, controls feed
Driving machine 2 drives conveying 3 to strike off by feedstock transportation to working surface and by Slicking apparatus 8.Raw material can comprise powder, creamy material
With fluent material, one of which or several raw material are referred to as backing material, other one or more materials are used for forming product structure,
It is referred to as structural material.Backing material has some phase-change characteristic, can be at powder under temperature, light, electromagnetic field or solvent action
Change between end, solid, cream, liquid and gas, and this conversion does not interferes with the stability of molded structural material.These
Phase-change characteristic can comprise relatively low fusing point, heat of fusion, the sintering energy of relatively low sintering temperature or less, relatively low boiling point or vapour
Heat-transformation, easily dissolved by some solvent, easily dry and form solid, easily softened by some solvent soaking, can at visible ray or
Decompose under electromagnetic field effect, the attributes such as liquid can be converted under visible ray or electromagnetic field effect by solid.
Scraps recycle device is removed machine 7 by recycling cavity 5 and defective material and is formed, and defective material removes machine 7 by drying, rinsing or adsorb
Method the raw material keeping initial condition in work space is removed, deliver in recycling cavity.Absorption can use vac sorb, quiet
Electro-adsorption or magnetic-adsorption.The defective material kind that controller is removed as required, selects the dress of corresponding removing residual raw materials
Put and method.Defective material is removed machine 7 and is moved on guide rail 6, completes various motor function.
Controller is for controlling the motion of each assembly, the output of light source, the output pattern of imaging system, temperature-controlling system
Heating power and the flow/pressure of cooling flow, blowing device and overflow cascade washers and the input power of adsorbent equipment.
Detailed description of the invention two: present embodiment is described below in conjunction with Fig. 1 to Figure 10, multiple material described in present embodiment
Rapid prototyping forming method, this forming method realizes based on multiple material rapid prototyping shaped device, and this forming method is two kinds
The forming method of structural material；It comprises the following steps:
Step one: use graphics software to generate the threedimensional model of product to be formed, and threedimensional model is divided into multiple points
Portion, the structural material that each branch of labelling uses；
Step 2: threedimensional model is saved as the increasing material manufacturing documentation form of standard, and records corresponding with threedimensional model
Branch's shape, material and colouring information；
Step 3: use three-dimensional slice software that the threedimensional model in step 2 is cut layering, be layered further according to each
Structural material generates the hierarchical control command file of rapid shaping, and hierarchical control command file includes following information:
Beam scanning motion track when a. using SLA mode that each layering is solidified or sintered or ray cast figure
Case；
B. the parameter that the structural material shaping characteristic of each layering is determined；
C. the parameter that the structural material physicochemical characteristics of each layering is determined；
Step 4: controller controls feed and drives machine 2 to drive conveying 3, and controls conveying 3 structure for conveying materials A extremely
The operation interval of current molding layering also strikes off, and then controls to make light source 10 pass through light-conducting system according to hierarchical control command file
11 and imaging system 12 after determine current region for forming, current region for forming is sintered or solidifies；
Step 5: use defective material to remove machine 7 and remove relict texture materials A；
Step 6: control the current residual operation interval that is layered to current molding of conveying 3 structure for conveying material B and scrape
Flat, then control to make light source 10 currently treat by determining after light-conducting system 11 and imaging system 12 according to hierarchical control command file
Shaping area, is sintered current region for forming or solidifies；
Step 7: use defective material to remove machine 7 and remove relict texture material B；
Step 8: control conveying the 3 conveying current residual operation interval that is layered of backing material to current molding and strike off,
Then control to make light source 10 currently to treat into by determining after light-conducting system 11 and imaging system 12 according to hierarchical control command file
Type district, is sintered current region for forming or solidifies；
Step 9: forming cavity 9 declines the work space of a layer height, repeats step 4 to step 8, until complete
Become whole forming processes of product to be formed；
Step 10: after whole molding of product to be formed complete, according to the characteristic of backing material, by heating, dissolving, corruption
Erosion, illumination, peel off or break into pieces, remove backing material, complete the prototype molding of product to be formed.
Graphics software can use CAD software；The parameter that structural material shaping characteristic is determined includes: temperature, light source merit
The parameters such as rate, time of exposure, cool time and scanning light beam translational speed；The parameter that structural material physicochemical characteristics is determined
Including: defective material removes the movement velocity of machine 7, absorption power, blowing or the pressure of shower and flow etc..
In present embodiment, repetition step 4 to step 8, the molding of various structures material can be completed in a layering.
If the structural material of molding the most all covers this layer, then conveying backing material to work space and strikes off, and burns it
Knot or solidification, due to the characteristic of backing material, this process does not interferes with the structural material of this layer.Use scan mode to support
When material carries out selective laser sintering or solidification, for improving efficiency, after backing material strikes off, forming cavity piston can be declined one
Segment distance, so that laser facula becomes big, is quickly completed the scanning of whole plane.
When technique needs, defective material can be used to remove the support sticking to structural material surface during machine 7 removing strikes off
Material, it is possible to use selective laser gasification mode that it is purged.
Detailed description of the invention three: present embodiment is described below in conjunction with Fig. 1 to Figure 10, multiple material described in present embodiment
Rapid prototyping forming method, this forming method realizes based on multiple material rapid prototyping shaped device, and this forming method is two kinds
The forming method of structural material；It comprises the following steps:
Step one: use graphics software to generate the threedimensional model of product to be formed, and threedimensional model is divided into multiple points
Portion, the structural material that each branch of labelling uses；
Step 2: threedimensional model is saved as the increasing material manufacturing documentation form of standard, and records corresponding with threedimensional model
Branch's shape, material and colouring information；
Step 3: use three-dimensional slice software that the threedimensional model in step 2 is cut layering, be layered further according to each
Structural material generates the hierarchical control command file of rapid shaping, and hierarchical control command file includes following information:
Beam scanning motion track when a. using SLA mode that each layering is solidified or sintered or ray cast figure
Case；
B. the parameter that the structural material shaping characteristic of each layering is determined；
C. the parameter that the structural material physicochemical characteristics of each layering is determined；
Step 4: controller controls feed and drives machine 2 to drive conveying 3, and controls conveying 3 conveying backing material to working as
Front molding layering whole operation interval and strike off, then according to hierarchical control command file control make light source 10 by leaded light system
After system 11 and imaging system 12, whole operation interval is sintered or solidifies；
Step 5: controller makes light source 10 by light-conducting system 11 and imaging according to hierarchical control command file by control
After system 12, the forming area of structural material A in current whole operation interval is carried out selectivity gasification；
Step 6: controller controls conveying 3 structure for conveying materials A and to current forming area and strikes off, then according to dividing
After layer control instruction file makes light source 10 by light-conducting system 11 and imaging system 12, current forming area is sintered or solid
Change；
Step 7: controller makes light source 10 by light-conducting system 11 and imaging according to hierarchical control command file by control
After system 12, the forming area of structural material B in current whole operation interval is carried out selectivity gasification；
Step 8: controller controls conveying 3 structure for conveying material B and to current forming area and strikes off, then according to dividing
After layer control instruction file makes light source 10 by light-conducting system 11 and imaging system 12, current forming area is sintered or solid
Change；
Step 9: forming cavity 9 declines the work space of a layer height, repeats step 4 to step 8, until complete
Become whole forming processes of product to be formed；
Step 10: after whole molding of product to be formed complete, according to the characteristic of backing material, by heating, dissolving, corruption
Erosion, illumination, peel off or break into pieces, remove backing material, complete the prototype molding of product to be formed.
In the step 4 of present embodiment, light source 10 can use laser instrument, laser instrument the laser sent is through light-conducting system
Whole raw materials of work space are sintered or solidify by the scanning system of rear arrival shaped device.Use scan mode to propping up
When timbering material carries out selective laser sintering or solidification, for improving efficiency, after backing material strikes off, forming cavity piston can be declined
One segment distance, so that laser facula becomes big, is quickly completed the scanning of whole plane.The laser warp sent by laser instrument in step 5
Arrive the scanning system of shaped device after crossing light-conducting system, the forming area of structural material A in work space is carried out selectivity
Gasification.If back have adjusted piston position, should first piston be set back before selectivity gasifies.Repeat step 4 to step
Rapid eight, the molding of various structures material can be completed in a layering.
Two kinds of molding patterns of detailed description of the invention two and three can be combined with interlayer in layer, such as can be first in one layer
Use the molding of the several material of the first Pattern completion, then use the second pattern to continue the one-tenth of several material
Type；The molding of a kind of some layer of Pattern completion can also be used, with the one-tenth of another kind of other layers of Pattern completion in a product
Type.
When the inventive method is used for more than two kinds of structural material shaped articles, forming process is mutually similar with above-mentioned.
Claims (5)
1. one kind of multiple material rapid prototyping shaped devices, it is characterised in that it includes that frame (1), feed drive machine (2), defeated
Stub bar (3), feed bin (4), recycling cavity (5), guide rail (6), defective material remove machine (7), Slicking apparatus (8), forming cavity (9), light source (10),
Light-conducting system (11), imaging system (12) and controller,
The central area of frame (1) is arranged to die cavity (9), and forming cavity (9) bottom is supported by the piston of lifting controllable；Frame
(1) one end arranges feed near frame and drives machine (2), and feed drives the outfan of machine (2) to connect conveying head (3), conveying head
(3) discharging opening position corresponds to forming cavity (9)；It is positioned at feed and drives machine (2) inner side, set along the direction parallel with described frame
Putting multiple feed bin (4) and recycling cavity (5), each feed bin (4) connects conveying head (3) by conveying pipeline；
The other end of frame (1) arranges guide rail (6) near frame along the direction parallel with frame, and guide rail (6) upper connection defective material is clear
Except machine (7), the other end of frame (1) also sets up Slicking apparatus (8) in forming cavity (9) peripheral frame；
The overhead corresponding with forming cavity (9) arranges light source (10), light-conducting system (11) and imaging system (12), and light source (10) sends
Light successively after light-conducting system (11) and imaging system (12), irradiate the to be formed of forming cavity (9) upper current molding layering
District；
Controller is for controlling the duty of each controlled assembly.
Multiple material rapid prototyping shaped device the most according to claim 1, it is characterised in that it also includes temperature control system
System, temperature-controlling system being heated or cooled during the upper formed product to be formed of forming cavity (9).
3. one kind of multiple material rapid prototyping forming methods, this forming method is real based on multiple material rapid prototyping shaped device
Existing, it is characterised in that this forming method is the forming method of two kinds of structural materials；It comprises the following steps:
Step one: use graphics software to generate the threedimensional model of product to be formed, and threedimensional model is divided into multiple branch, mark
The structural material that Ji Ge branch uses；
Step 2: threedimensional model is saved as the increasing material manufacturing documentation form of standard, and records the branch corresponding with threedimensional model
Shape, material and colouring information；
Step 3: use three-dimensional slice software that the threedimensional model in step 2 is cut layering, the structure being layered further according to each
Material generates the hierarchical control command file of rapid shaping, and hierarchical control command file includes following information:
Beam scanning motion track when a. using SLA mode that each layering is solidified or sintered or ray cast pattern；
B. the parameter that the structural material shaping characteristic of each layering is determined；
C. the parameter that the structural material physicochemical characteristics of each layering is determined；
Step 4: controller controls feed and drives machine (2) to drive conveying head (3), and controls conveying head (3) structure for conveying materials A
The operation interval that is layered to current molding also strikes off, and then controls to make light source (10) by leaded light according to hierarchical control command file
Determine current region for forming after system (11) and imaging system (12), current region for forming is sintered or solidifies；
Step 5: use defective material to remove machine (7) and remove relict texture materials A；
Step 6: control the current residual operation interval that is layered to current molding of conveying head (3) structure for conveying material B and strike off,
Then control to make light source (10) work as by determining after light-conducting system (11) and imaging system (12) according to hierarchical control command file
Front region for forming, is sintered current region for forming or solidifies；
Step 7: use defective material to remove machine (7) and remove relict texture material B；
Step 8: control conveying head (3) the conveying current residual operation interval that is layered of backing material to current molding and strike off, so
Control to make light source (10) current by determining after light-conducting system (11) and imaging system (12) according to hierarchical control command file afterwards
Region for forming, is sintered current region for forming or solidifies；
Step 9: forming cavity (9) declines the work space of a layer height, and repetition step 4 is to step 8, until completing
Whole forming processes of product to be formed；
Step 10: after whole molding of product to be formed complete, according to the characteristic of backing material, by heating, dissolving, burn into
Illumination, peel off or break into pieces, remove backing material, complete the prototype molding of product to be formed.
4. one kind of multiple material rapid prototyping forming methods, this forming method is real based on multiple material rapid prototyping shaped device
Existing, it is characterised in that this forming method is the forming method of two kinds of structural materials；It comprises the following steps:
Step one: use graphics software to generate the threedimensional model of product to be formed, and threedimensional model is divided into multiple branch, mark
The structural material that Ji Ge branch uses；
Step 2: threedimensional model is saved as the increasing material manufacturing documentation form of standard, and records the branch corresponding with threedimensional model
Shape, material and colouring information；
Step 3: use three-dimensional slice software that the threedimensional model in step 2 is cut layering, the structure being layered further according to each
Material generates the hierarchical control command file of rapid shaping, and hierarchical control command file includes following information:
Beam scanning motion track when a. using SLA mode that each layering is solidified or sintered or ray cast pattern；
B. the parameter that the structural material shaping characteristic of each layering is determined；
C. the parameter that the structural material physicochemical characteristics of each layering is determined；
Step 4: controller controls feed and drives machine (2) to drive conveying head (3), and controls conveying head (3) conveying backing material extremely
The whole operation interval of current molding layering also strikes off, and then controls to make light source (10) by leading according to hierarchical control command file
After photosystem (11) and imaging system (12), whole operation interval is sintered or solidifies；
Step 5: controller makes light source (10) by light-conducting system (11) and imaging according to hierarchical control command file by control
After system (12), the forming area of structural material A in current whole operation interval is carried out selectivity gasification；
Step 6: controller controls conveying head (3) structure for conveying materials A and to current forming area and strikes off, then according to layering
After control instruction file makes light source (10) by light-conducting system (11) and imaging system (12), current forming area is sintered
Or solidification；
Step 7: controller makes light source (10) by light-conducting system (11) and imaging according to hierarchical control command file by control
After system (12), the forming area of structural material B in current whole operation interval is carried out selectivity gasification；
Step 8: controller controls conveying head (3) structure for conveying material B and to current forming area and strikes off, then according to layering
After control instruction file makes light source (10) by light-conducting system (11) and imaging system (12), current forming area is sintered
Or solidification；
Step 9: forming cavity (9) declines the work space of a layer height, and repetition step 4 is to step 8, until completing
Whole forming processes of product to be formed；
Step 10: after whole molding of product to be formed complete, according to the characteristic of backing material, by heating, dissolving, burn into
Illumination, peel off or break into pieces, remove backing material, complete the prototype molding of product to be formed.
5. according to the multiple material rapid prototyping forming method described in claim 3 or 4, it is characterised in that imaging system (12)
With scanning or projection pattern work.
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| CN110520276A (en) * | 2017-03-27 | 2019-11-29 | 卡本有限公司 | The method for manufacturing three-dimension object by increasing material manufacturing |
| CN111002427A (en) * | 2019-12-18 | 2020-04-14 | 南京理工大学 | 3D printing forming device and method for laminated ceramic matrix composite based on photocuring technology |
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