JP2930354B2 - Casting method using photocurable resin prototype - Google Patents
Casting method using photocurable resin prototypeInfo
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- JP2930354B2 JP2930354B2 JP2032359A JP3235990A JP2930354B2 JP 2930354 B2 JP2930354 B2 JP 2930354B2 JP 2032359 A JP2032359 A JP 2032359A JP 3235990 A JP3235990 A JP 3235990A JP 2930354 B2 JP2930354 B2 JP 2930354B2
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Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は消失模型を用いた鋳造法に関する。The present invention relates to a casting method using a vanishing model.
複雑な形状の製品を鋳造する方法として、従来よりフ
ルモールド法等の消失模型を用いた方法が用いられてい
る。この方法は発泡ポリスチレン、ポリウレタン等の材
料で製品原型（消失模型）を製作し、この模型を鋳物砂
中に埋没したまま、湯口を通じて溶融金属を注入するこ
とにより模型を燃焼気化させ、模型と溶融金属とを置換
する方法である。また、この模型を用いて、鋳物砂に模
型を埋没する代わりに、粘結剤を混入したシリカ（Si
O2）、アルミナ（Al2O3）、ジルコン砂（ZrO2）等のセ
ラミック材料を模型に塗布し、これを高温で焼成するこ
とにより内部の模型を燃焼、消失させてセラミックシェ
ル鋳型を作り、この鋳型を用いて鋳造を行なう方法も採
られている。これらの方法は、型抜きが必要ないため複
雑な形状の模型を使用するのに適している。一般にこれ
らの方法に用いる消失模型は、ポリスチレン、ポリウレ
タン等を金型内において加熱発泡させて成形しており、
中実構造となっている。As a method of casting a product having a complicated shape, a method using a vanishing model such as a full mold method has been conventionally used. In this method, a product prototype (disappearing model) is manufactured from a material such as expanded polystyrene or polyurethane, and while the model is buried in molding sand, molten metal is injected through a sprue to burn and evaporate the model, thereby melting the model. This is a method of replacing with a metal. Using this model, instead of burying the model in casting sand, use silica (Si
A ceramic material such as O 2 ), alumina (Al 2 O 3 ), zircon sand (ZrO 2 ) is applied to the model and fired at a high temperature to burn and burn off the internal model to make a ceramic shell mold. A method of performing casting using this mold has also been adopted. These methods are suitable for using models with complicated shapes because no die cutting is required. Generally, the vanishing model used in these methods is formed by heating and foaming polystyrene, polyurethane, etc. in a mold,
It has a solid structure.
上記の消失模型を用いた鋳造法は以下に述べる問題が
ある。The casting method using the disappearing model has the following problems.
すなわち、使用する消失模型は中実構造であるため、
前述のように鋳物砂に埋没して溶融金属と置換する際に
爆発的に燃焼、気化して大量の燃焼ガスを発生する。こ
のため、 １）湯口からの溶融金属の吹き上げ等を生じ作業に危険
を伴なう。That is, since the vanishing model used has a solid structure,
As described above, when it is buried in molding sand and replaced with molten metal, it explosively burns and vaporizes to generate a large amount of combustion gas. For this reason, 1) the molten metal is blown up from the gate, causing danger to the work.
２）発生ガスにより製品にピンホール、ブローホール等
の欠陥が発生しやすい。2) Defects such as pinholes and blowholes are likely to occur in products due to the generated gas.
３）模型の燃焼残滓が溶融金属に巻き込まれ、鋳造品の
品質が悪化する。3) The burning residue of the model is caught in the molten metal, and the quality of the cast product deteriorates.
４）ステンレス鋼等の低炭素鋳造品に用いた場合、模型
燃焼によってCOガスが発生し、製品が浸炭されてしま
う。4) When used for low carbon castings such as stainless steel, CO gas is generated by model combustion and the product is carburized.
等の問題が生じていた。 And other problems.
また、予め高温焼成する際に模型を焼失させてセラミ
ックシェル鋳型を得る鋳造法を採る場合には上記問題は
生じないが、焼成時に模型が大きく熱膨張するため、鋳
型と模型との熱膨張率の差によってセラミックシェル鋳
型が破損しやすいという問題が生じる。製品寸法が大き
い場合は模型の膨張量も大きく、特に破損が生じやすい
ため、大型製品にこの方法を適用することは極めて困難
であった。In addition, the above problem does not occur when a casting method in which a model is burned out to obtain a ceramic shell mold in advance of high-temperature firing does not cause the above problem. There is a problem that the ceramic shell mold is easily damaged by the difference between the two. When the size of the product is large, the amount of expansion of the model is large, and particularly, the model is liable to be broken.
また、上記２つの方法に共通する問題としては、従来
の消失模型は製作の際に、高価で納期の長い金型を必要
とするため、コスト及び納期面で少数生産には適さず、
個別生産の鋳造品には使用が制限される問題がある。Also, as a problem common to the above two methods, the conventional vanishing model requires an expensive mold with a long delivery time at the time of production, so it is not suitable for small-quantity production in terms of cost and delivery time,
There is a problem that use of cast products manufactured individually is restricted.
本発明は上記問題を解決し、低コストで高品質の鋳造
品を得ることのできる、鋳造法を提供することを目的と
している。An object of the present invention is to solve the above-mentioned problems and to provide a casting method capable of obtaining a high-quality casting at low cost.
本出願人等は、光硬化性樹脂を用いて、従来困難であ
った中空の複雑形状立体モデルを製作する方法を別途提
案している。（特願平１−178439号）前述のように消失
模型を用いた鋳造法の問題点の多くは中実模型を使用す
ることから生じている。従来、消失模型は形状が複雑で
あることと、鋳型生成時に変形を生じないだけの強度が
必要であること等から中空形状に形成することは困難で
あり、中空形状の消失模型は使用されていない。The present applicants have separately proposed a method of manufacturing a hollow complicated shape three-dimensional model using a photocurable resin, which has been conventionally difficult. (Japanese Patent Application No. 1-178439) As described above, many problems of the casting method using the vanishing model arise from the use of the solid model. Conventionally, it is difficult to form a disappearing model into a hollow shape because the shape is complicated and the strength is required so as not to be deformed at the time of forming a mold. Absent.
本発明は、上述の本出願人等の提案に係る方法を用い
て製作した中空形状の消失模型を使用して鋳造を行なう
ことを特徴としている。The present invention is characterized in that casting is performed using a hollow-shaped vanishing model manufactured using the method according to the proposal of the present applicant described above.
すなわち、本発明によれば、光硬化性樹脂液に光照射
を行ない該光照射個所を移動させて光硬化性樹脂の固化
物から成る中空形状の製品模型を製作し、次いで該製品
模型を鋳型材料で被覆し、その後該製品模型を焼失させ
ることにより前記鋳型材料中に型空間を生成し、この型
空間に注湯することにより製品を鋳造することを特徴と
する光硬化性樹脂原型を用いた鋳造法が提供される。That is, according to the present invention, a light-curable resin liquid is irradiated with light, the light-irradiated portion is moved to produce a hollow product model made of a solidified photocurable resin, and then the product model is cast into a mold. Using a photo-curable resin master, characterized in that a mold space is created in the mold material by coating with a material and then the product model is burned off, and a product is cast by pouring into the mold space. Provided casting method.
また、本発明によれば、光硬化性樹脂液に光照射を行
ない、該光照射個所を移動させて光硬化樹脂の固化物か
ら成る中空形状の製品模型を製作し、次いで該製品模型
を鋳型材料中に埋没し、その後該製品原型に注湯するこ
とにより製品模型の焼失と製品鋳造とを同時に行なうこ
とを特徴とする光硬化性樹脂原型を用いた鋳造法が提供
される。Further, according to the present invention, a light-curable resin liquid is irradiated with light, the light-irradiated portion is moved to produce a hollow product model made of a solidified photocurable resin, and then the product model is cast into a mold. A casting method using a photo-curable resin prototype is provided, wherein the casting is performed by burying the material in a material and thereafter pouring the product into the product prototype, thereby simultaneously burning out the product model and casting the product.
中空形状の消失模型を使用して鋳造を行なうため、鋳
物砂に埋没して溶融金属と置換する場合、中実模型に較
べて燃焼ガス発生量が大幅に低減される。又模型の中空
部分を通して燃焼ガスを外部に逃がすことが可能とな
る。更に、セラミックシェル鋳型を製作する場合におい
ても、模型中空部が熱膨張を吸収するため、模型と鋳型
との熱膨張率の差による鋳型焼成時の割れや破損が生じ
ない。Since casting is performed using a hollow-shaped vanishing model, the amount of combustion gas generated is significantly reduced as compared to a solid model when buried in casting sand and replaced with molten metal. Further, the combustion gas can escape to the outside through the hollow portion of the model. Furthermore, even when a ceramic shell mold is manufactured, cracks or breakage during firing of the mold due to a difference in the coefficient of thermal expansion between the model and the mold do not occur because the hollow portion of the model absorbs thermal expansion.
第１図に本発明の鋳造法に用いる中空消失模型の製造
法を示す。この方法は本出願人等により別途提案（特願
平１−178439号）されたもので、光硬化性樹脂を用いて
中空模型を製造する際に変形が生じる可能性がある部分
に薄板状の補強支持部を同時に形成することにより、硬
化時の変形を防止して寸法精度の高い中空模型を製造す
ることを特徴としている。また、完成した模型は内部に
補強支持部を備えているため、薄肉、軽量でありながら
極めて高い剛性を有している。FIG. 1 shows a method of manufacturing a hollow vanishing model used in the casting method of the present invention. This method has been separately proposed by the present applicant and the like (Japanese Patent Application No. 1-178439), and a thin plate-shaped portion is likely to be deformed when a hollow model is manufactured using a photocurable resin. By forming the reinforcing support at the same time, deformation during curing is prevented, and a hollow model with high dimensional accuracy is manufactured. Further, since the completed model has a reinforcing support portion inside, it has extremely high rigidity while being thin and lightweight.
第１図において10は未硬化の液状光硬化性樹脂であ
り、図示しない容器に収容されている。又、２はベース
プレートで、光硬化性樹脂10に浸漬されて支持棒１によ
り上下方向に移動される。４は集光器であり、前記容器
上方の光源から発せられた光を樹脂液10の液面近傍で点
状に収束させている。前記光源及び集光器４は液面に対
し、水平方向に移動して照射個所を移動させることがで
きる。前記光硬化性樹脂10には、ラジカル重合可能な不
飽和基を含有する樹脂（例えばウレタンアクリレート、
エポキシアクリレート、ポリエステルアクリレート、ポ
リイミド樹脂、アリルエーテル樹脂、ポリエン・ポリチ
オール樹脂など）とラジカル系光重合開始剤からなるラ
ジカル系光硬化性樹脂、及びカチオン重合性樹脂（例え
ば脂肪族エポキシ樹脂、脂環族エポキシ樹脂、芳香族エ
ポキシ樹脂、環状エーテル、ビニルエーテルなど）とカ
チオン系光重合開始剤からなるカチオン系光硬化性樹脂
が用いられる。In FIG. 1, reference numeral 10 denotes an uncured liquid photocurable resin, which is housed in a container (not shown). Reference numeral 2 denotes a base plate which is immersed in the photocurable resin 10 and is moved vertically by the support rod 1. Reference numeral 4 denotes a light collector which converges light emitted from a light source above the container in a point-like manner near the liquid surface of the resin liquid 10. The light source and the condenser 4 can be moved in the horizontal direction with respect to the liquid surface to move the irradiation position. The photo-curable resin 10 includes a resin containing a radically polymerizable unsaturated group (for example, urethane acrylate,
A radical photocurable resin composed of an epoxy acrylate, polyester acrylate, polyimide resin, allyl ether resin, polyene / polythiol resin, etc.) and a radical photopolymerization initiator, and a cationic polymerizable resin (for example, aliphatic epoxy resin, alicyclic resin) A cationic photocurable resin comprising an epoxy resin, an aromatic epoxy resin, a cyclic ether, a vinyl ether, etc.) and a cationic photopolymerization initiator is used.
第１図は中空の球状模型を製造する工程を段階的に示
しており、第１図（Ａ）では、まず、光硬化性樹脂液10
を容器内に収容し、ベースプレート２を、上方からの光
照射により樹脂液10上面からベースプレート２上面に及
ぶ連続した硬化部分が得られる深さとなるように樹脂液
10中に沈め、位置決めする。そののち、樹脂の硬化に必
要なエネルギレベルの光を光源から発し、集光器４でも
って該光を点状に収束させつつベースプレート（２）の
上に帯状硬化部分（３′）を得る。FIG. 1 shows the steps of manufacturing a hollow spherical model step by step, and FIG.
Is contained in a container, and the base plate 2 is exposed to light from above so as to have a depth such that a continuous cured portion extending from the upper surface of the resin liquid 10 to the upper surface of the base plate 2 can be obtained.
Submerge in 10 and position. Thereafter, light of an energy level necessary for curing the resin is emitted from the light source, and the light converging unit 4 converges the light in a point-like manner to obtain a band-shaped cured portion (3 ') on the base plate (2).
硬化部分（３′）が得られたのち、次いで、第１図
（Ｂ）に示すように樹脂液10上面から該硬化部分上面ま
での深さが、これら両面間に及ぶ連続した硬化部分が光
照射により得られる深さ、即ち前記硬化部分を形成した
と同じ深さとなるようベースプレート２を沈降させ、前
述と同様の集光器４を介する集中光照射を選択的に行う
ことにより、前記硬化部分上に新たにこれに連続する硬
化部分を得る。この所定パターンの帯状硬化部分を形成
して積層する操作を繰り返して得られる支持部３は、そ
の肉厚が、例えば約0.1mm〜0.3mmと極めて薄い複数の板
状体として構成されており、等間隔をおいて垂直に延び
ている。更に、これらベースプレート２の沈降と、光照
射による硬化部分の形成とを繰り返し行い（第２図参
照）、薄板状支持部３と共に球状模型５を形成する（第
１図（ｃ）参照）。After the cured portion (3 ') is obtained, then, as shown in FIG. 1 (B), the depth from the upper surface of the resin liquid 10 to the upper surface of the cured portion is a continuous cured portion extending between these two surfaces. The base plate 2 is settled so as to have a depth obtained by irradiation, that is, the same depth as the hardened portion is formed, and concentrated light irradiation through the concentrator 4 is selectively performed as described above, thereby obtaining the hardened portion. A new continuous hardened part is obtained on top. The support portion 3 obtained by repeating the operation of forming and laminating the band-shaped cured portion of the predetermined pattern is configured as a plurality of extremely thin plate-like members having a thickness of, for example, about 0.1 mm to 0.3 mm, It extends vertically at equal intervals. Further, the sedimentation of the base plate 2 and the formation of a hardened portion by light irradiation are repeated (see FIG. 2), and the spherical model 5 is formed together with the thin plate-like support portion 3 (see FIG. 1 (c)).
このように、支持部３が模型５とベースプレート２と
の間に介在するように固定形成を行うため、丸い底面を
有する硬化部分がベースプレート２から剥離したり、該
ベースプレート２に対し傾斜したりすることがなく、球
状模型５の形成を円滑且つ確実に行うことができる。ま
た、中空部5aを有する球状模型５は、全体的な球形状の
歪や部分的な凹凸の発生等、造形時における樹脂の収
縮、膨潤、層間剥離による歪を生じ易い。本方法では、
その造形にあたり、中空部5a内を貫いて球状模型５の外
側へ垂直方向に延びる複数の補強用の薄板状支持部３を
同時に形成するため、光照射による硬化部分形成時の変
形発生を防止することができる。As described above, since the support portion 3 is fixedly formed so as to be interposed between the model 5 and the base plate 2, a hardened portion having a round bottom is peeled off from the base plate 2 or inclined with respect to the base plate 2. Thus, the spherical model 5 can be formed smoothly and reliably. In addition, the spherical model 5 having the hollow portion 5a is liable to cause distortion due to resin shrinkage, swelling, and delamination during molding, such as overall spherical distortion and partial unevenness. In this method,
In the shaping, a plurality of thin plate-like support portions 3 for reinforcement extending in the vertical direction to the outside of the spherical model 5 through the hollow portion 5a are formed at the same time, so that deformation at the time of forming a hardened portion due to light irradiation is prevented. be able to.
模型５の形成後、支持部３の下端部を破断してベース
プレート２から模型５を分離する（第１図（Ｄ）参
照）。支持部３は、上述の如き薄い板状体により構成さ
れているため、機械的強度が弱く、容易に該ベースプレ
ート２上で破断することができ、またベースプレート２
に対する接触面積が小さいため、該ベースプレート２と
の接触面から容易に剥がすこともできる。After the model 5 is formed, the lower end of the support portion 3 is broken to separate the model 5 from the base plate 2 (see FIG. 1 (D)). Since the support portion 3 is formed of the thin plate as described above, it has low mechanical strength and can be easily broken on the base plate 2.
Since the contact area with the base plate 2 is small, the contact area with the base plate 2 can be easily removed.
つぎに、ベースプレート２から分離した支持部３を、
必要に応じて、第１図（Ｅ）に示すように、模型５から
適当な手段で除去する。これにより、破損、変形等を伴
うことなく所望の中空球状模型５を得ることができる。Next, the support part 3 separated from the base plate 2 is
If necessary, as shown in FIG. 1 (E), it is removed from the model 5 by an appropriate means. Thereby, a desired hollow spherical model 5 can be obtained without any damage, deformation, or the like.
上述の説明から明らかなように、完成した模型５の内
部5aには補強用支持部３が残されているため、中空構造
であるにもかかわらず模型５は変形に対して極めて強い
剛性を示す。更に、補強用支持部３を設けたことによ
り、模型５の肉厚を薄くすることが可能となっており、
補強用支持部３の構造を変えることにより（例えばハニ
カム状とする）、肉厚を1mm以下としても消失模型とし
て必要な剛性を確保することができる。更に本方法によ
れば中空部5a内の補強用支持部３に貫通孔を形成し、中
空部5a内の支持部３に仕切られた空間を互いに連通させ
ることも可能である。また、第１図においては簡単のた
めに、中空球状模型を製造する場合を示したが、本方法
を用いてこれ以外にも極めて複雑な形状の模型を製造す
ることができる。As is clear from the above description, since the reinforcing support portion 3 is left in the interior 5a of the completed model 5, the model 5 exhibits extremely strong rigidity against deformation despite its hollow structure. . Further, the provision of the reinforcing support 3 allows the thickness of the model 5 to be reduced.
By changing the structure of the reinforcing support portion 3 (for example, to have a honeycomb shape), the rigidity required as a vanishing model can be ensured even when the thickness is 1 mm or less. Further, according to the present method, it is also possible to form a through hole in the reinforcing support portion 3 in the hollow portion 5a so that the spaces partitioned by the support portion 3 in the hollow portion 5a communicate with each other. Although FIG. 1 shows a case where a hollow spherical model is manufactured for simplicity, the present method can be used to manufacture a model having an extremely complicated shape.
次に、第３図に、上記方法により製造した中空消失模
型を用いて鋳造用のセラミックシェル鋳型を製作する方
法を示す。図において11は中空消失模型であり、中空部
11a内には複数の薄板状補強用支持部12が形成されてい
る。また、支持部12を形成する際、それぞれの支持部12
には貫通孔12aが形成されているため、中空部11a内の空
間は相互に連通している。Next, FIG. 3 shows a method of manufacturing a ceramic shell mold for casting using the hollow vanishing model manufactured by the above method. In the figure, reference numeral 11 denotes a hollow vanishing model,
A plurality of thin plate-like reinforcing support portions 12 are formed in 11a. Also, when forming the support portions 12, each support portion 12
Is formed with a through-hole 12a, the spaces in the hollow portion 11a communicate with each other.
本方法では第３図に示すように中空消失模型外側に、
前述のセラミック鋳型材料13を数回にわたって、吹付
け、又は塗着して模型11を被覆内蔵するが、このときに
燃焼ガス放出用のガス抜き孔14を設け、模型中空部11a
と鋳型材料13外面とを連通させておく。15は湯口であ
る。In this method, as shown in FIG.
The above-mentioned ceramic mold material 13 is sprayed or applied several times to cover and incorporate the model 11, but at this time, a vent hole 14 for releasing combustion gas is provided, and the model hollow portion 11a is provided.
And the outer surface of the mold material 13 are communicated. 15 is a gate.
次に、この鋳型を約1000℃で焼成し、セラミック13を
焼結させる。このとき、鋳型13内の模型11は燃焼、気化
して貫通孔12aを介してガス抜き孔14から放出される
が、模型11内を中空としたため、燃焼用の空気供給と燃
焼ガスとの排出が効率良く行なわれ、燃焼残滓の発生が
少ない。また、加熱の際模型11と鋳型13との間の熱膨張
率の差により生じる熱応力は中空部11aの支持部12によ
り吸収されるため、鋳型13には大きな熱応力が加わら
ず、従来問題になっていた鋳型の破損が生じることはな
い。このため、本方法を用いて大形鋳造品用のセラミッ
クシェル鋳型が製造可能である。Next, the mold is fired at about 1000 ° C. to sinter the ceramic 13. At this time, the model 11 in the mold 13 is burned and vaporized and released from the gas vent hole 14 through the through-hole 12a, but since the inside of the model 11 is hollow, air supply for combustion and discharge of combustion gas are performed. Is performed efficiently, and the generation of combustion residues is small. In addition, since the thermal stress caused by the difference in the coefficient of thermal expansion between the model 11 and the mold 13 during heating is absorbed by the support portion 12 of the hollow portion 11a, no large thermal stress is applied to the mold 13 and the conventional problem There is no breakage of the mold. Thus, ceramic shell molds for large castings can be manufactured using this method.
鋳型13の焼成が完了すると内部の中空模型は気化、消
失しており、鋳型13内には模型11の外形と同一の空間16
が形成され（第４図）、鋳造用の型として使用される。
この場合、鋳型13を予め割型として製造し、製品鋳造後
分割して製品を取り出すようにして鋳型13を繰り返し使
用しても良いし、１個の製品を鋳造後、鋳型13を割って
製品を取り出すようにしても良い。When the firing of the mold 13 is completed, the hollow model inside is vaporized and disappears.
Is formed (FIG. 4) and used as a casting mold.
In this case, the mold 13 may be manufactured in advance as a split mold, and the product 13 may be repeatedly used by casting and dividing the product to take out the product. May be taken out.
また、上記のようにセラミックシェル鋳型を用いず、
鋳物砂に中空模型を埋没して、湯口から溶融金属を注い
で、模型を燃焼、気化させて溶融金属と置換するように
しても良い。この場合も第３図と同様、中空模型にはガ
ス抜き孔と支持部の貫通孔とが設けられる。模型は中空
となっているため、燃焼部体積が少なく、燃焼ガスの発
生は中実模型に較べて大幅に減少し、しかも燃焼ガスは
支持部の貫通孔とガス抜き孔とを通って速やかに大気に
放出される。このため、燃焼ガスにより溶融金属の吹き
上げが生じる危険がなく、また燃焼ガスや残滓により、
材質劣化や鋳造欠陥、或いは鋳はだの荒れ等の問題が生
じない。更に、中空模型を使用すれば、注湯に先立っ
て、鋳物砂内の模型に着火して燃焼させることも可能と
なる。この場合も模型の中空部分を通して酸素が供給さ
れるため、模型を容易に燃焼、消失させることができ
る。Also, without using a ceramic shell mold as described above,
The hollow model may be buried in the casting sand, the molten metal may be poured from the gate, and the model may be burned and vaporized to replace the molten metal. Also in this case, similarly to FIG. 3, the hollow model is provided with a gas vent hole and a through hole of the support portion. Since the model is hollow, the volume of the combustion part is small, the generation of combustion gas is significantly reduced as compared with the solid model, and the combustion gas is quickly passed through the through hole and the gas vent hole of the support part. Released to the atmosphere. For this reason, there is no danger of the molten metal being blown up by the combustion gas.
There is no problem such as material deterioration, casting defects, or rough cast iron. Furthermore, if a hollow model is used, it is possible to ignite and burn the model in the casting sand prior to pouring. Also in this case, since the oxygen is supplied through the hollow portion of the model, the model can be easily burned and eliminated.
本発明は光硬化性樹脂を用いて製造した中空消失模型
を使用することにより、鋳型の割れや破損の問題を生じ
ることなく大型のセラミックシェル鋳型を製造すること
ができるため、従来適用が困難であった大型鋳造品につ
いてもセラミックシェル鋳型を用いた鋳造法を使用する
ことが可能となる。The present invention uses a hollow vanishing model manufactured using a photocurable resin, so that a large-sized ceramic shell mold can be manufactured without causing a problem of cracking or breakage of the mold, so that conventional application is difficult. The casting method using a ceramic shell mold can also be used for a large cast product that has been used.
又、直接溶融金属と模型とを置換する場合において
も、燃焼ガスや残滓による鋳造欠陥や材質の劣化、或い
は作業の危険等を伴うことなく高品質の鋳造製品を得る
ことができる。In addition, even when the molten metal is directly replaced with the model, a high-quality cast product can be obtained without a casting defect or deterioration of the material due to a combustion gas or a residue, or a danger of work.
更に、本方法に用いる中空消失模型は、製造に際し、
従来の中実消失模型のように金型を必要とせず、簡易に
製造可能であるため、少数生産品に使用した場合でもコ
スト増や納期が長くなる問題を生じない。Furthermore, the hollow vanishing model used in the present method is used for manufacturing,
Unlike a conventional solid vanishing model, it does not require a mold and can be easily manufactured. Therefore, even when used for a small number of products, there is no problem that the cost increases and the delivery time becomes longer.
第１図（Ａ）から（Ｅ）及び第２図は、本発明に使用す
る中空模型の製造法を示す略示図、第３図及び第４図は
本発明による鋳造法の一実施例を示す図である。 １……支持棒、２……ベースプレート、 ３……補強用支持部、４……集光器、 ５……模型、5a……中空部、 10……光硬化性樹脂、11……中空消失模型、 11a……中空部、12……支持部、 12a……貫通孔、 13……セラミック鋳型材料、 14……ガス抜き孔、15……湯口。1 (A) to 1 (E) and FIG. 2 are schematic views showing a method of manufacturing a hollow model used in the present invention, and FIGS. 3 and 4 show an embodiment of a casting method according to the present invention. FIG. DESCRIPTION OF SYMBOLS 1 ... Support rod, 2 ... Base plate, 3 ... Reinforcement support part, 4 ... Concentrator, 5 ... Model, 5a ... Hollow part, 10 ... Photocurable resin, 11 ... Hollow disappearance Model, 11a hollow part, 12 support part, 12a through hole, 13 ceramic mold material, 14 gas vent hole, 15 gate.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 萩谷 敦 神奈川県川崎市宮前区馬絹944―20 (72)発明者 斉藤 直一郎 神奈川県藤沢市藤沢西部団地２―９― 952 (56)参考文献 特開 昭61−42446（ＪＰ，Ａ) 特開 昭56−41045（ＪＰ，Ａ) 特開 昭56−144478（ＪＰ，Ａ) 実開 昭56−131944（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Atsushi Hagiya 944-20, Mashin, Miyamae-ku, Kawasaki, Kanagawa Prefecture JP-A-61-42446 (JP, A) JP-A-56-41045 (JP, A) JP-A-56-144478 (JP, A) Japanese Utility Model Showa 56-131944 (JP, U)
Claims (6)
個所を移動させて光硬化性樹脂の固化物から成る中空形
状の製品原型を製作し、次いで該製品原型を鋳型材料で
被覆し、その後該製品原型を焼失させることにより前記
鋳型材料中に型空間を生成し、この型空間に注湯するこ
とにより製品を鋳造することを特徴とする光硬化性樹脂
原型を用いた鋳造法。1. A light-curable resin liquid is irradiated with light, and the light-irradiated portion is moved to produce a hollow product prototype made of a solidified photocurable resin, and then the product prototype is coated with a mold material. A casting method using a photocurable resin mold, wherein a mold space is formed in the mold material by burning off the product mold, and the product is cast by pouring into the mold space. .
個所を移動させて光硬化性樹脂の固化物から成る中空形
状の製品原型を製作し、次いで該製品原型を鋳型材料中
に埋没し、その後該製品原型に注湯することにより製品
原型の焼失と製品鋳造とを同時に行なうことを特徴とす
る光硬化性樹脂原型を用いた鋳造法。2. A light-curable resin liquid is irradiated with light, and the light-irradiated portion is moved to produce a hollow product prototype made of a solidified photocurable resin, and then the product prototype is placed in a mold material. A casting method using a photo-curable resin prototype, wherein the product prototype is burned out and then poured into the product prototype to simultaneously burn off and cast the product prototype.
個所を移動させて固化させた光硬化性樹脂からなる中空
形状の鋳造用製品原型であって、該製品原型内部に製品
原型外壁と同時に形成された光硬化性樹脂から成る補強
用内部支持構造を有することを特徴とする中空形状の鋳
造用製品原型。3. A hollow casting product prototype made of a photocurable resin which is irradiated with light to a photocurable resin liquid and moved by solidifying the light-irradiated portion, wherein the product is placed inside the product prototype. A hollow casting product prototype having a reinforcing internal support structure formed of a photocurable resin formed simultaneously with the prototype outer wall.
造であることを特徴とする請求項３に記載の鋳造用製品
原型。4. A casting product prototype according to claim 3, wherein said reinforcing internal support structure is a honeycomb-like structure.
たことを特徴とする請求項３または４に記載の鋳造用製
品原型。5. The casting product prototype according to claim 3, wherein a through hole is provided in the reinforcing internal support structure.
特徴とする請求項３から４のいずれかに記載の鋳造用製
品原型。6. The casting product prototype according to claim 3, wherein a through-hole is provided in an outer wall of the product prototype.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2032359A JP2930354B2 (en) | 1989-09-11 | 1990-02-15 | Casting method using photocurable resin prototype |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23487289 | 1989-09-11 | ||
| JP1-234872 | 1989-09-11 | ||
| JP2032359A JP2930354B2 (en) | 1989-09-11 | 1990-02-15 | Casting method using photocurable resin prototype |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03174943A JPH03174943A (en) | 1991-07-30 |
| JP2930354B2 true JP2930354B2 (en) | 1999-08-03 |
Family
ID=26370912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2032359A Expired - Lifetime JP2930354B2 (en) | 1989-09-11 | 1990-02-15 | Casting method using photocurable resin prototype |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2930354B2 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4133923A1 (en) * | 1991-10-12 | 1993-04-15 | Borsig Babcock Ag | LOST MODEL AND METHOD FOR THEIR PRODUCTION |
| JP2821518B2 (en) * | 1991-11-08 | 1998-11-05 | 威雄 中川 | Casting method using outer resin mold |
| JPH0775755B2 (en) * | 1992-12-22 | 1995-08-16 | 工業技術院長 | How to make a transparent mold |
| JP3127230B2 (en) * | 1994-06-21 | 2001-01-22 | 株式会社メイコー | Precious metal products casting method |
| JP3470207B2 (en) * | 1994-12-28 | 2003-11-25 | 株式会社メイコー | Method for producing photocurable resin wax pattern |
| AU2027000A (en) * | 1998-11-20 | 2000-09-21 | Allison Engine Company, Inc. | Method and apparatus for production of a cast component |
| JP2000254759A (en) * | 1999-03-05 | 2000-09-19 | Daido Steel Co Ltd | Manufacture of mold for precision casting |
| WO2007069746A1 (en) * | 2005-12-16 | 2007-06-21 | Yoshihiro Watanabe | Article such as surfboard and production method thereof |
| CN110560636A (en) * | 2019-10-09 | 2019-12-13 | 西安皓森精铸有限公司 | Method for reducing shell cracking in investment casting process |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5641045A (en) * | 1979-09-12 | 1981-04-17 | Kengen So | Production of three-dimensional pattern body made of metal |
| JPS56131944U (en) * | 1980-02-29 | 1981-10-06 | ||
| JPS56144478A (en) * | 1980-04-12 | 1981-11-10 | Hideo Kodama | Stereoscopic figure drawing device |
| JPS6142446A (en) * | 1984-07-31 | 1986-02-28 | Tsuneichi Koyama | Production of three-dimensional figure body made of metal |
-
1990
- 1990-02-15 JP JP2032359A patent/JP2930354B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03174943A (en) | 1991-07-30 |
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