WO2005121229A1 - Procede de lissage de surface de modèle en trois dimensions elabore par conformage en strates de poudre de polystyrène et procede de coulage de precision utilisant le modele - Google Patents

Procede de lissage de surface de modèle en trois dimensions elabore par conformage en strates de poudre de polystyrène et procede de coulage de precision utilisant le modele Download PDF

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Publication number
WO2005121229A1
WO2005121229A1 PCT/JP2004/007968 JP2004007968W WO2005121229A1 WO 2005121229 A1 WO2005121229 A1 WO 2005121229A1 JP 2004007968 W JP2004007968 W JP 2004007968W WO 2005121229 A1 WO2005121229 A1 WO 2005121229A1
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Prior art keywords
polystyrene
model
organic solvent
additive manufacturing
powder additive
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PCT/JP2004/007968
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English (en)
Japanese (ja)
Inventor
Hidekazu Suzuki
Akio Saito
Takaharu Oi
Akira Takase
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Shonan Design Co., Ltd.
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Application filed by Shonan Design Co., Ltd. filed Critical Shonan Design Co., Ltd.
Priority to JP2006514368A priority Critical patent/JPWO2005121229A1/ja
Priority to PCT/JP2004/007968 priority patent/WO2005121229A1/fr
Publication of WO2005121229A1 publication Critical patent/WO2005121229A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/0427—Coating with only one layer of a composition containing a polymer binder
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
    • C08J2325/02—Homopolymers or copolymers of hydrocarbons
    • C08J2325/04—Homopolymers or copolymers of styrene
    • C08J2325/06—Polystyrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2425/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers

Definitions

  • the present invention relates to a method of smoothing a model surface in a three-dimensional model of polystyrene powder additive manufacturing and a precision manufacturing method using a burnt-out model manufactured by the method.
  • a laser beam controlled by a computer is irradiated onto the polystyrene fine particle layer, a new polystyrene fine particle is overlaid in a thin layer on the surface fused layer of polystyrene fine particles, and the laser beam controlled again by the computer is irradiated again.
  • Polystyrene fine particles of the eye Form a surface fusion layer. By repeating this operation, the fused layer of polystyrene fine particles is stacked.
  • the fused polystyrene fine particle laminate becomes a three-dimensional three-dimensional object. It is also easy to make a complex three-dimensional object with a hollow part.
  • Resin powders include polyamide resin powders and polystyrene resin powders.
  • the former is used in the field of models that require high strength and high toughness, and the latter is relatively brittle. Has a softening point that makes it easy to melt, so it has come to be used as a burnt model for construction.
  • the powder additive manufacturing three-dimensional model has been widely spread with many advantages, but also has disadvantages. That is, because of the laminating method, a laminating step remains on the model surface. Further, since the powder particles are fused, irregularities in which the heads of the powder particles are continuous remain on the model surface. In other words, the powder additive manufacturing 3D model has a microscopically rough surface.
  • Method of cutting the model surface with NC 'method of shaving the surface protrusion with a cutter ⁇ There is a method of cutting the surface protrusion with paper. If the surface lacks a large amount of unevenness, putty on the model surface and fill in the recesses on the model surface with paper and remove the protrusions. A smooth surface can be obtained by finishing the paper in order, and in some cases, sharpening the paper.
  • a method of surface smoothing in a powder additive manufacturing 3D model a method of impregnating a molten wax with a wax component to finish the surface is used.
  • a metal powder additive manufacturing 3D model after sintering, a low melting point alloy is used. And surface finishing.
  • Patent Document 1 a plastic material is immersed in a vapor of an organic solvent, and a plastic material is immersed therein. There has been disclosed a method for smoothing the surface of a solid wood.
  • precision manufacturing includes a lost wax method and a plaster mold method.
  • the mouth and wax model are used as the burnout model due to the construction method.
  • a multi-layered refractory coating is provided on the surface of the wax model to remove the wax at 130-250 ° C and the pouring force, and completely burn out the residual wax at 300-500 ° C. Bake and fire at 600-1000 ° C to produce hollow high-strength ceramic mold.
  • a high melting point alloy Ti, Ni, Co alloy, etc.
  • a melting point around 1000 ° C is incorporated into this hollow mold, and after cooling, the mold is collapsed to obtain a high melting point alloy.
  • plaster mold method plaster for construction is poured into a wax'wax model and buried, and the gypsum is naturally hardened and dried. Then, free water is dried at about 100 ° C, and then about 130 ° C. — While removing the wax at 200 ° C with the pouring power, gradually remove the gypsum water of crystallization and completely burn off the residual wax at 300-500 ° C to produce a hollow plaster mold. You.
  • a low melting point alloy (Mg-Zn-A1 alloy or the like) having a melting point of 300 to 700 ° C is incorporated into the hollow gypsum mold, and after cooling, the gypsum mold is collapsed to obtain a low melting point alloy.
  • the precision structure Compared to a sand-filled structure using a sand mold, the precision structure has a feature that a hollow complex-shaped structure can be manufactured with relatively high accuracy. However, as long as a wax-wax model, which is brittle and has poor physical properties, is used, there is a limit in producing a hollow thin-walled complex shape model.
  • polystyrene powder additive manufacturing model is one of the rabbit prototyping technologies, and has the advantage of being able to rapidly produce several hollow thin-walled complicated models. It can be dewaxed at 150-230 ° C.
  • Patent documents 2-4 and the like have been filed for the above-mentioned photo-solidification modeling method.
  • Patent document 1 JP-A-6-128398
  • Patent Document 2 Japanese Patent Publication No. 5-33900
  • Patent Document 3 Japanese Patent Publication No. 7-94149
  • Patent Document 4 JP-A-9-141747 Disclosure of the invention
  • the polystyrene powder additive manufacturing 3D model is far from a model having a smooth surface due to the lamination step and particle shape irregularities remaining on its surface, but the hollow complex model has a certain degree of dimensional accuracy. It is used as a shape confirmation model because it can be manufactured quickly. It is natural that a model with a smooth surface free of stacking steps and particle shape irregularities is desired.
  • Polystyrene powder additive manufacturing A method of papering the surface of a three-dimensional model is a very common technique. Polystyrene powder lamination modeling The three-dimensional model is a porous structure because polystyrene fine particles are fused and laminated in the first place, so even if the convex part is scraped off with paper, the porous part of the concave part will be a fine void. It remains on the surface of the model and is smoother than the original, but cannot be regarded as a smooth surface.
  • the polystyrene powder additive manufacturing three-dimensional model is used in precision burnout models for precision manufacturing as a substitute for a lost-powder model by virtue of its property of being melted out by heating.
  • irregularities remain on the skin of the product because the stacking steps and particle shape unevenness remaining on the surface of the 3D model of the polystyrene powder are transferred to the product. .
  • a method for impregnating the surface of a beaded polystyrene powder three-dimensional model with a wax component to solve this problem has been devised.
  • the melting point of wax wax is about 100-130 ° C, and when impregnated with molten wax wax, the model itself will be about 100-130 ° C.
  • the temperature approaches the melting temperature of polystyrene a slight warp or deformation of the model occurs, and the problem remains that it becomes difficult to maintain the shape of the polystyrene powder additive manufacturing three-dimensional model in a complicated shape.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 6-128398 also discloses a method of immersing a plastic material in the vapor of an organic solvent to smooth the surface.
  • a 3D model of polystyrene powder additive manufacturing there is a problem that the organic solvent condensed on the model surface flows down on the model surface, leaving sagging streaks on the model surface.
  • the immersion time is extremely short so as not to be immersed so as to leave a streak on the surface of the model, there is a problem that the organic solvent is insufficiently condensed on the surface of the model, and a part that is not smoothed remains.
  • a heating device In addition, a heating device, a steam box, and a steam box aggregating organic solvent recovery device are required to boil the organic solvent and convert it into vapor of the organic solvent.
  • a heating device In the case of flammable organic solvents, it is necessary to implement the measures.
  • flammable organic solvents In the case of flammable organic solvents, it is imperative that reliable measures to prevent vapor leakage be taken against vapor leakage.
  • the present inventors have conducted intensive studies in order to solve such a number of problems as described above, and without giving a model a large change in deformation or warpage and dimensional accuracy, and at room temperature, to form a hollow complex shape.
  • the present inventors have found a method of rapidly smoothing the surface of a three-dimensional model of polystyrene powder additive manufacturing having complicated curved surfaces on both the inner surface and the outer surface of the hollow portion of the mold, and have reached the present invention.
  • the surface smoothing method for a polystyrene powder additive manufacturing three-dimensional model according to the present invention is a method for dissolving polystyrene in a polystyrene powder additive additive three-dimensional model (a) manufactured by polystyrene powder additive manufacturing.
  • removal step (B) of removing excess organic solvent immediately after being lifted from polystyrene-dissolved organic solvent (b) and film formation by drying at room temperature.
  • drying (C) drying
  • the organic solvent (b) in which the polystyrene is dissolved has a polystyrene concentration of 0.01 to 5 wt%.
  • the organic solvent (b) in which polystyrene is dissolved is preferably a mixed organic solvent of a halogenated hydrocarbon solvent and an organic solvent (c) having a boiling point of 40 ° C. to 150 ° C.
  • the organic solvent (b) in which polystyrene is dissolved may be a mixed organic solvent of a styrene derivative-based solvent and another organic solvent (c) having a boiling point of 40 ° C to 150 ° C.
  • the immersion time in the immersion step (A) is desirably 1 second and 15 minutes.
  • the removal step (B) it is desirable to remove the excessively adhered solvent by air blowing, but it may be performed by a shake-off method.
  • the immersion step (A), the removal step (B) and the dry film formation step (C) are performed a plurality of times, for example.
  • the polystyrene powder additive manufacturing three-dimensional model (a) is preferably a hollow model having a complicated shape.
  • the 3D data of the model shape is sent to the powder additive manufacturing machine, and the carbon dioxide laser beam is irradiated on the polystyrene powder coat layer under computer control according to the 3D data.
  • the surface of the polystyrene fine particles in the polystyrene layer irradiated with the carbon dioxide laser beam is heated and melted to form a fused surface between the polystyrene fine particles.
  • the next layer of polystyrene fine particles is coated thereon, and the layer is irradiated with a carbon dioxide laser beam to create a fused surface between the second layers of polystyrene fine particles.
  • the fused surface fused between the first-layer polystyrene fine particles and the fused surface fused between the second-layer polystyrene fine particles are fused and laminated and joined.
  • the area of the fusion surface between the polystyrene fine particles in the first layer and the fusion surface between the polystyrene fine particles in the second layer change little by little under computer control and are stacked.
  • the stacked 3D state is completed as the desired 3D model.
  • the overall shape of the model is the same as the stacked state of the record plates according to the three-dimensional data, but microscopically, since it is a laminated body, the laminated steps appear on the curved surface.
  • the flat surface is a surface where the fine particles are fused at the contact point, but there is a height difference between the head of the fine particle and the molten contact point of the fine particle. Therefore, the polystyrene powder additive manufacturing 3D model (a) is a porous object with a fusion of fine particle contacts. In other words, it exhibits a surface state in which surface irregularities can be clearly confirmed by visual inspection and touch.
  • the organic solvent (b) in which polystyrene is dissolved is a halogen hydrocarbon-based organic solvent'styrene-derived organic solvent, and is a true solvent that dissolves polystyrene well.
  • organic hydrocarbon solvents methylene dichloride, trichloromethane, tetrachloromethane, chloroethane, and the like are provided.
  • Halogen hydrocarbon-based organic solvents are good solvents for polystyrene. Although they have anesthetic properties, they have good solubility and drying properties. Of the halogenated hydrocarbon solvents, methylene dichloride is preferred. These halogenated hydrocarbon-based organic solvents may be mixed and used as a true solvent.
  • styrene derivative organic solvent examples include a styrene monomer and a low-molecular alkyl styrene.
  • Styrene monomer is preferred as an organic solvent which is flammable but has good solubility and drying properties.
  • These styrene derivative organic solvents may be mixed and used as a true solvent.
  • organic solvents (c) include aromatic organic solvents, ketone organic solvents, ester organic solvents, ether organic solvents, aliphatic organic solvents, alcohol organic solvents, and aliphatic organic solvents.
  • 'It is an alcoholic organic solvent and has a poor ability to dissolve polystyrene satisfactorily!
  • / ⁇ is an organic solvent that can dilute the true solvent in which polystyrene is dissolved.
  • benzene “toluene” xylene is typical, and ethyl benzene and the like can be mentioned.
  • ketone-based organic solvent examples include acetone'methylethylketone ⁇ ⁇ -hexanone'methylisobutylketone, such as methyl ⁇ butylbutylketone.
  • ester-based organic solvent examples include methyl acetate, ethyl acetate, propyl acetate, isopropyl acetate, pill, ⁇ -butyl acetate, and isobutyl acetate.
  • Representative ether-based organic solvents are dimethyl ether 'methylethyl ether' getyl ether, and methyl butyl ether, ethyl butyl ether, dibutyl ether, ethyl vinyl ether, butyl vinyl ether, dioxane, furan, n -methylfuran ⁇ Tetrahydrofuran and the like.
  • Typical examples of the aliphatic organic solvent include n-hexane'heptane.
  • Typical examples of the alcohol-based organic solvent include methanol “ethanol” “propyl alcohol” “isopropyl alcohol and the like, such as butanol.
  • the other organic solvent (c) may be the above-mentioned single organic solvent! Or a mixed organic solvent obtained by mixing the above-mentioned organic solvents.
  • the concentration of polystyrene dissolved in the organic solvent (b) in which polystyrene is dissolved is 0.01 to 5 wt%. Preferably, it is 0.1-3 wt%.
  • the amount of polystyrene to be dissolved is 5 wt% or more, the surface of the polystyrene is apt to be skinned, and the immersion step (A) is inhibited.
  • Polystyrene skinning on the liquid surface occurs because the solvent is scattered too much on the liquid surface, especially when a single solvent is used. Therefore, by using a mixed solvent and a diluting solvent which is an organic solvent (c), the skinning of the liquid surface can be alleviated.
  • the amount of polystyrene to be dissolved is 5 wt% or more, the model is pulled up, the organic solvent (b) in which the polystyrene is dissolved is dried, and the dissolved polystyrene is liable to partially drip on the model surface. appear.
  • the amount of polystyrene to be dissolved is less than 0.01 wt%, the smoothing ability is reduced.
  • the organic solvent (b) in which polystyrene is dissolved By pouring a predetermined amount of polystyrene fine powder into the organic solvent (b) and stirring it, the organic solvent (b) in which polystyrene is dissolved can be easily dissolved and polystyrene can be prepared. If a predetermined amount of the other organic solvent (c) is added and mixed with the mixture, a uniform mixed solution can be prepared, and the other organic solvent (c) may be mixed. In addition, by mixing the organic solvent (c), the effect of preventing skinning of the liquid surface, lowering the viscosity of the solution, and preventing rapid drying film formation described below is imparted. The mixing ratio varies greatly depending on the type of the mixed organic solvent, and is not particularly limited.
  • the mixed solution thus prepared is stored and prepared in a closed container with a capacity sufficient to immerse the model.
  • the immersion step (A) of immersing the polystyrene powder additive manufacturing three-dimensional model (a) in the organic solvent (b) in which the polystyrene thus prepared is dissolved will be described.
  • the polystyrene powder additive manufacturing three-dimensional model (a) is immersed at room temperature without heating the organic solvent (b) in which polystyrene is dissolved.
  • the time to immerse the polystyrene powder additive manufacturing 3D model (a) in the organic solvent (b) in which polystyrene is dissolved is 1 second and 5 minutes. It is so soluble that the surface of the model begins to dissolve immediately at room temperature. Therefore, when immersed for more than 5 minutes for a long time, the shape of the model surface is dissolved until it is largely collapsed, and particularly the thin-walled portion is easily deformed.
  • the other organic solvent (c) as a diluting solvent to make the dissolution time too long so that the dissolution time is easily adjusted. If the immersion time is less than 1 second, it is difficult to adjust the immersion time, and it is not possible to control the work process.
  • the immersion step (A) in order to ensure that the thin portion of the model surface is excessively melted and does not warp or bend! /
  • the organic solvent removal step (B) and the dry film formation step (C) are completed, and the second immersion step (A) • The removal step (B) • The dry film formation step (C) is added again.
  • This process is repeated 2-10 times, while checking the surface smoothness. Preferably, it is repeated 2-3 times.
  • the removal step (B) is provided as an essential item in order to remove the organic solvent that excessively adheres to the model surface immediately after the removal from the polystyrene-dissolved organic solvent (b). If the removal step (B) is not performed, the organic solvent (c) excessively adhering to the model surface will hang down, and after evaporation and drying, the polystyrene dissolved in the organic solvent (c) will remain in the partial area in a dripping state. Although the surface smoothness is maintained, there is a disadvantage that the surface is overlaid.
  • the removal step (B) is carried out on the model surface immediately after being lifted from the polystyrene-dissolved organic solvent (b).
  • the operation of shaking off the model is performed several times. This work may be performed manually by an operator, or a model swing-out device may be installed on an automatic line. As a result, most of the excess organic solvent on the model surface is removed, and the dripping state is eliminated.
  • the polystyrene powder additive manufacturing three-dimensional model (a) is pulled up from the polystyrene-dissolved organic solvent (b), it is subjected to a removal step (B) and then dried at room temperature in a fume hood to dissolve the polystyrene in an organic solvent.
  • Most of (b) scatters from the surface of the polystyrene powder additive manufacturing 3D model (a), and the dissolved polystyrene appears on the surface of the polystyrene powder additive manufacturing 3D model (a).
  • the drying of the concave part which is the contact site where the polystyrene fine particles fuse on the surface of the three-dimensional model (a), is slightly delayed.
  • the polystyrene dissolved in the polystyrene-dissolved organic solvent (b) is accumulated and remains in the concave portion on the surface of the polystyrene powder additive manufacturing three-dimensional model (a) serving as a contact portion where the polystyrene fine particles fuse.
  • This phenomenon is interpreted as the same reasoning as the mountain erosion 'sedimentation phenomenon in the plain.
  • the unevenness on the surface of the 3D model of polystyrene powder additive manufacturing (a) has a smaller difference in elevation, and the immersion process (A), the removal process (B), and the dry film formation process (C)
  • the immersion step (A), the removal step (B), the 'dry film formation step (C)', and the second force are successively smoothed, and the effects aimed at by the present invention are exhibited.
  • the polystyrene-dissolved organic solvent (b) evaporates and disperses rapidly, the polystyrene dissolved in the polystyrene-dissolved organic solvent (b) adheres to the curved surface of the base model and cannot form a film, and withstands rapid shrinkage. Cracks occur in the turtle shell state. This decrease is the same as the decrease in dry cracking of paint. Therefore, it is necessary to perform the dry film formation step (C) at room temperature without heating. Further, by using the polystyrene-dissolved organic solvent (b) as a mixed solvent, the low-boiling solvent in the mixed solvent is sequentially evaporated and scattered to promote normal film formation.
  • the polystyrene powder additive manufacturing 3D model (a) Dissolves and disappears in (b).
  • the concave position on the model surface is The decomposed polystyrene is buried by accumulation film formation.
  • the molding conditions were as follows: the particle size of the polystyrene fine powder was about 90 microns, the 50W carbon dioxide laser was used, and the lamination pitch was 0.1-0.2 mm.
  • the surface of the model of the two-cylinder engine suction port was clearly visible and visibly touchable. Also, traces of stacking steps clearly appeared on the curved surface.
  • Polystyrene was poured into a polystyrene solvent and stirred to obtain an organic solvent (b) in which the polystyrene was dissolved immediately and uniformly.
  • An organic solvent (b) in which polystyrene was dissolved was prepared by mixing and diluting another organic solvent (c) as a diluting solvent.
  • Polystyrene Polystyrene beads for powder additive manufacturing
  • Table 2 summarizes the evaluations of the examples and comparative examples of the immersion step (A), the removal step (B), and the dry film formation step (c) by using a model and by using an artificial product.
  • Comparative Example 3 is the polystyrene powder additive manufacturing model itself, and no smoothing treatment was performed!
  • Gypsum-type curing Leave at room temperature for 3 days.
  • Gypsum mold collapse smash with a hammer below 100 ° C
  • the present invention is a method of embedding the same material instead of embedding a foreign material in the surface of the model, all the smoothed surfaces are viewed as the same material, and the surface hardness is the same.
  • the heat-resistant behavior, the impact-resistant behavior, the weather-resistant behavior, and the chemical resistance behavior do not change. Therefore, the surface is smoothed as a shape confirmation model, and the commercial value is improved. It can also be used as a master model for duplication with a smooth surface.
  • one application as the master model for inversion is to invert to a silicone rubber mold, and to replicate a plurality of models having the same shape as the master model by vacuum injection of urethane resin or epoxy resin.
  • the master model for inversion is to invert to a silicone rubber mold, and to replicate a plurality of models having the same shape as the master model by vacuum injection of urethane resin or epoxy resin.
  • the polystyrene powder additive manufacturing 3D model is used as a precision model burnout model by pushing the wax model down, but has the disadvantage that the surface of the precision model product is not smoothed.
  • the polystyrene powder additive manufacturing 3D model whose surface has been smoothed by the method of the present invention can be used entirely as a wax / wax alternative manufacturing model.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)

Abstract

[PROBLEME] Lisser toute la surface d’un modèle en trois dimensions élaboré par conformage en strates d’une poudre de polystyrène, englobant les surfaces interne et externe d’une partie creuse et possédant une face incurvée compliquée, sans déformation du modèle ni changement significatif de précision des cotes avec des opérations à une température ordinaire sans temporisation. [MOYENS POUR RESOUDRE LE PROBLEME] Il est prévu un procédé de lissage de la surface d’un modèle en trois dimensions élaboré par conformage en strates d’une poudre de polystyrène, comprenant une phase d’immersion (A) consistant à immerger (a) le modèle en trois dimensions élaboré par conformage en strates d’une poudre de polystyrène dans un solvant organique (b) contenant un polystyrène dissout dans celui-ci, une phase d’enlèvement (B) consistant à enlever un solvant organique fixé de manière excessive au modèle juste après l’extraction du solvant organique (b) contenant un polystyrène, et une phase de séchage et de formation de film (C) consistant à former un film par séchage à une température ordinaire, où le solvant organique (b) contenant un polystyrène dissout dans celui-ci a une teneur en polystyrène comprise entre 0,01 et 5 % en poids.
PCT/JP2004/007968 2004-06-08 2004-06-08 Procede de lissage de surface de modèle en trois dimensions elabore par conformage en strates de poudre de polystyrène et procede de coulage de precision utilisant le modele WO2005121229A1 (fr)

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JP2006514368A JPWO2005121229A1 (ja) 2004-06-08 2004-06-08 ポリスチレン粉末積層造形３次元模型の表面平滑化方法及びその模型を用いた精密鋳造方法
PCT/JP2004/007968 WO2005121229A1 (fr) 2004-06-08 2004-06-08 Procede de lissage de surface de modèle en trois dimensions elabore par conformage en strates de poudre de polystyrène et procede de coulage de precision utilisant le modele

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN103524770A (zh) * 2013-08-28 2014-01-22 中国科学院福建物质结构研究所 一种3d打印产品表面抛光方法及其装置
WO2014203254A1 (fr) * 2013-06-18 2014-12-24 Polymertal Ltd. Traitement des surfaces polymères d'objets
US10226918B2 (en) 2014-08-08 2019-03-12 Ricoh Company, Ltd. Three-dimensional object formation powder material, three-dimensional object formation material set, and three-dimensional object production method

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JP5913270B2 (ja) * 2013-12-04 2016-04-27 株式会社ブリヂストン タイヤ加硫金型の製造方法

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JPS4610957B1 (fr) * 1966-06-18 1971-03-19
JP2002265619A (ja) * 2001-03-07 2002-09-18 Ebara Corp 選択レーザー焼結によって製作される３次元形状物に用いるポリスチレン粉末

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014203254A1 (fr) * 2013-06-18 2014-12-24 Polymertal Ltd. Traitement des surfaces polymères d'objets
CN103524770A (zh) * 2013-08-28 2014-01-22 中国科学院福建物质结构研究所 一种3d打印产品表面抛光方法及其装置
US10226918B2 (en) 2014-08-08 2019-03-12 Ricoh Company, Ltd. Three-dimensional object formation powder material, three-dimensional object formation material set, and three-dimensional object production method

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