JPH0362489B2 - - Google Patents
Info
- Publication number
- JPH0362489B2 JPH0362489B2 JP20865881A JP20865881A JPH0362489B2 JP H0362489 B2 JPH0362489 B2 JP H0362489B2 JP 20865881 A JP20865881 A JP 20865881A JP 20865881 A JP20865881 A JP 20865881A JP H0362489 B2 JPH0362489 B2 JP H0362489B2
- Authority
- JP
- Japan
- Prior art keywords
- model
- mold
- slurry
- thermal
- columnar member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000002002 slurry Substances 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 239000007921 spray Substances 0.000 claims description 14
- 239000000919 ceramic Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 13
- 238000007751 thermal spraying Methods 0.000 claims description 12
- 239000012779 reinforcing material Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 238000010304 firing Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 229920003002 synthetic resin Polymers 0.000 description 15
- 239000000057 synthetic resin Substances 0.000 description 15
- 238000005266 casting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000011505 plaster Substances 0.000 description 4
- 229920006328 Styrofoam Polymers 0.000 description 3
- 239000008261 styrofoam Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910001297 Zn alloy Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/20—Making tools by operations not covered by a single other subclass
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Description
【発明の詳細な説明】 本発明は、プレス型の製作方法に関する。[Detailed description of the invention] The present invention relates to a method for manufacturing a press mold.
従来、量産用のプレス型の製作方法として、い
わゆるフルモールド法と称されるものがあり、こ
れは、発泡スチロール等を用いて所望のプレス型
と略同一形状の型を形成し、この型を鋳物砂で埋
めて鋳型とする。そして、この鋳型に注湯するこ
とにより、前記発泡スチロールの部分を気化させ
ながら鋳込みを行ない、結果として発泡スチロー
ルに相当する部分を鋳物とする。そして、この鋳
物のプレス型面となる部分をNC工作機械等によ
り切削し、その後手仕上げを行なつてプレス型と
するものである。 Conventionally, there is a method for manufacturing press molds for mass production called the full mold method, in which a mold with approximately the same shape as the desired press mold is formed using styrofoam, etc., and this mold is used for casting. Fill it with sand and use it as a mold. Then, by pouring the metal into this mold, casting is performed while vaporizing the styrofoam portion, and as a result, the portion corresponding to the styrofoam is cast. Then, the part of this casting that will become the press mold surface is cut using an NC machine tool, etc., and then hand-finished to form the press mold.
しかし、この方法では、特に切削後に手仕上げ
が必要であるために製作期間が長くなると共に、
製作費用が高くなる。 However, this method requires hand finishing after cutting, which lengthens the production period.
Production costs increase.
一方、成形されるパネルの枚数がある程度限ら
れる試作用プレス型では、製作期間を短縮するた
め、亜鉛合金を用いたり、亜鉛合金の表面をエポ
キシ樹脂でコーテイングしてプレス型としてい
る。 On the other hand, in order to shorten the manufacturing period for prototype press molds where the number of panels that can be molded is limited to a certain extent, zinc alloy is used or the surface of the zinc alloy is coated with epoxy resin to form the press mold.
しかし、このようなプレス型は、耐久性が無
く、また、プレスされた製品の寸法精度も、前記
量産型によるものに比べて悪いという問題があつ
た。 However, such press dies lack durability, and the dimensional accuracy of the pressed product is also poorer than that of the mass-produced dies.
そこで、これらの問題点を解決するため、第１
図に示すようなプレス型の製作方法が提案されて
いる。すなわち、まず石膏、合成樹脂あるいは低
融点合金によつて、溶射を行なうための溶射モデ
ル１を作り、そのモデル面に金属を溶射して溶射
層２を形成する。次にこの溶射層を溶射モデルか
ら分離した上でコンクリート、サンドコア、合成
樹脂等で裏打ちしてプレス型とする。 Therefore, in order to solve these problems, the first
A method of manufacturing a press mold as shown in the figure has been proposed. That is, first, a thermal spraying model 1 for thermal spraying is made of plaster, synthetic resin, or a low melting point alloy, and a thermal spraying layer 2 is formed by thermally spraying metal onto the surface of the model. Next, this sprayed layer is separated from the sprayed model and lined with concrete, sand core, synthetic resin, etc. to form a press mold.
この方法の長所として、溶射モデルの表面形状
を完全に溶射層側に転写して再現できるために、
プレス型とした後に手仕上げなどの作業が不要と
なり、このため、製作期間の短縮、製作費用の低
減を図ることができる。 The advantage of this method is that the surface shape of the sprayed model can be completely transferred and reproduced on the sprayed layer side.
Work such as manual finishing is not required after forming into a press mold, thereby shortening the manufacturing period and reducing manufacturing costs.
しかし、この方法によると、例えば溶射モデル
を石膏あるいは合成樹脂で作つた場合、溶射時に
石膏の結晶水が飛び出したり、合成樹脂の成分が
蒸発して洩出したりして溶射層と溶射モデル表面
との間に空洞が発生し、このため、溶射層がふく
れてしまつたりする問題があつた。 However, according to this method, for example, if the thermal spray model is made of plaster or synthetic resin, the crystallized water of the plaster may splash out during thermal spraying, or the components of the synthetic resin may evaporate and leak, causing the thermal spray layer to become separated from the surface of the thermal spray model. Cavities were created between the two, which caused the problem that the sprayed layer swelled.
また、溶射モデルを低融点合金で作つた場合に
は、低融点合金が重いために作業性が悪く、しか
も高価なために製作費用が高くなり、さらに、低
融点合金が溶射層と合金を作る傾向があり、文字
などの細かな形状が溶射層に都合良く成形できな
い。その上、裏打ちを行なつた後に低融点合金の
モデルを加熱して溶解しようとすると裏打材まで
加熱されるので、この加熱によつて裏打材が変形
しないためには裏打材として耐熱性があるものを
選ぶ必要が生じる。 In addition, when a thermal spray model is made of a low melting point alloy, the low melting point alloy is heavy, making it difficult to work with, and is expensive, increasing production costs. There is a tendency that fine shapes such as letters cannot be conveniently formed into the sprayed layer. Furthermore, if you try to heat and melt a low melting point alloy model after lining it, the lining material will also be heated, so the lining material must be heat resistant so that it does not deform due to this heating. You will need to choose something.
本発明は上記の諸問題を解決することを目的と
し、溶射モデルを作製するにあたり、基本モデル
のモデル面上に形成した空間に柱状部材を設ける
と共にこの柱状部材が設けられた空間にスラリー
を流し込んで固化させ、固化したスラリーから柱
状部材を抜き取つて該柱状部材に対応する部分に
空洞部を形成すると共に固化したスラリーから基
本モデルを分離させた上で固化したスラリーを焼
成してセラミツク型とし、さらにセラミツク型の
空洞部に合成樹脂などの補強材を注入して硬化さ
せるようにしたことにより、高精度の溶射層を溶
射モデルのモデル面に形成するとができると共
に、焼成後のセラミツク型の空洞部に注入した合
成樹脂などの補強材によつてセラミツクのもろさ
を補足して靭性を持たせたことを特徴とする。 The present invention aims to solve the above-mentioned problems, and when producing a thermal spray model, a columnar member is provided in a space formed on the model surface of a basic model, and slurry is poured into the space in which the columnar member is provided. A columnar member is extracted from the solidified slurry, a cavity is formed in a portion corresponding to the columnar member, a basic model is separated from the solidified slurry, and the solidified slurry is fired to form a ceramic mold. Furthermore, by injecting a reinforcing material such as a synthetic resin into the cavity of the ceramic mold and curing it, it is possible to form a high-precision thermal spray layer on the model surface of the thermal spray model, and it is also possible to It is characterized by a reinforcing material such as synthetic resin injected into the cavity to compensate for the brittleness of ceramic and give it toughness.
以下に図面に従つて本発明の実施例を説明す
る。 Embodiments of the present invention will be described below with reference to the drawings.
第２図ａは、石膏、合成樹脂あるいは低融点金
属等製による基本モデル３の外周をフエンス４で
囲い、このフエンス４内にスラリー５を流し込ん
だ状態を示す。スラリー５は、熱膨張係数が低く
耐火度の高いAl2O3・ZrO2・SiO2系の粉末に粘結
剤としてエチルシリケートを加えて混合したもの
であり、基本モデル３の表面形状に即応して流し
込むことができる。 FIG. 2a shows a state in which the outer periphery of the basic model 3 made of plaster, synthetic resin, low melting point metal, etc. is surrounded by a fence 4, and the slurry 5 is poured into the fence 4. Slurry 5 is a mixture of Al 2 O 3・ZrO 2・SiO 2 powder, which has a low coefficient of thermal expansion and high fire resistance, with ethyl silicate added as a binder, and can quickly adapt to the surface shape of Basic Model 3. You can pour it in.
第２図ｂは、前記スラリー５中に適宜間隔に柱
状部材６を林立させた工程を示し、フエンス４上
端に設置した治具７にあけた孔８に柱状部材６は
林立支持されている。この柱状部材６を林立させ
る工程は、スラリー５を流し込む前に行なつて、
その後にスラリー５を流し込んでも同様である。 FIG. 2b shows a step in which columnar members 6 are arranged in a row at appropriate intervals in the slurry 5, and the columnar members 6 are supported in a row in holes 8 made in a jig 7 installed at the upper end of the fence 4. This step of standing up the columnar members 6 is performed before pouring the slurry 5,
The same holds true even if slurry 5 is poured after that.
フエンス４内で固化したスラリー５から第２図
ｃに示す如く柱状部材６を抜きとつて空洞部９を
形成する。 As shown in FIG. 2c, the columnar members 6 are removed from the slurry 5 solidified within the fence 4 to form a cavity 9.
空洞部９が形成されたスラリー５から第２図ｄ
に示す如く基本モデル３およびフエンス４を外し
て、図示しない焼成炉中で焼成させてセラミツク
型５ａとする。 From the slurry 5 in which the cavity 9 is formed, FIG.
As shown in the figure, the basic model 3 and fence 4 are removed and fired in a firing furnace (not shown) to form a ceramic mold 5a.
第２図ｅは、焼成されたセラミツク型５ａの空
洞部９に補強材として合成樹脂１０を注型すると
共に注型側面に合成樹脂層１１を形成した工程を
示す。補強材は合成樹脂でなくてもよく適当な材
料が選べる。 FIG. 2e shows a step in which a synthetic resin 10 is cast as a reinforcing material into the cavity 9 of the fired ceramic mold 5a, and a synthetic resin layer 11 is formed on the side surface of the casting. The reinforcing material does not need to be made of synthetic resin, and any suitable material can be selected.
第２図ｆは、前記合成樹脂層１１に補強板１２
を接着させた工程を示し、これによつて溶射モデ
ル１３が完成する。 FIG. 2 f shows a reinforcing plate 12 on the synthetic resin layer 11.
The thermal spray model 13 is completed by this process.
なお、必要によつてはこの溶射モデル１３のモ
デル面に水ガラスを塗布・含浸させてもよく、こ
のようにすることにより、セラミツク特有のモデ
ル面のざらざらの状態を平滑にし、モデル面に後
述する溶射によつて形成する溶射層の形成状態を
良くする。 If necessary, water glass may be applied or impregnated on the model surface of this thermal sprayed model 13. By doing this, the roughness of the model surface peculiar to ceramics can be smoothed out and the model surface can be coated with water glass, which will be described later. To improve the formation condition of a thermal sprayed layer formed by thermal spraying.
以上の工程でセラミツク型５ａの空洞部９に合
成樹脂１０を注型する理由は、セラミツクは軽く
耐熱性はあるがもろい性質を有し、モデル面に後
述する溶射を行なうまでの工程中にこわれてしま
うことがある。そこで合成樹脂１０を空洞部９内
に注型することにより全体に靭性をもたせて少し
の衝撃ではわれないようにするためである。 The reason why the synthetic resin 10 is cast into the cavity 9 of the ceramic mold 5a in the above process is that ceramic is light and heat resistant, but it is brittle and will not break during the process before thermal spraying, which will be described later, on the model surface. Sometimes it happens. Therefore, by casting the synthetic resin 10 into the cavity 9, it is possible to impart toughness to the entire structure so that it will not break under the slightest impact.
以上の如くして成形した溶射モデル１３に第２
図ｇに示す如くCr等の硬質金属を溶射して溶射
層１４を形成する。この溶射温度は高温であるが
溶射モデル１３はセラミツクとなつているため、
溶射モデル１３から結晶水が飛び出たりその他の
成分が熱分解して飛び出たりすることがなく、溶
射層１４の形成に悪い影響を与えることはない。 The second thermal spray model 13 formed as described above is
As shown in Figure g, a hard metal such as Cr is sprayed to form a sprayed layer 14. This thermal spraying temperature is high, but since thermal spraying model 13 is made of ceramic,
Crystal water does not jump out from the thermal spray model 13, and other components do not thermally decompose and jump out, so that the formation of the thermal spray layer 14 is not adversely affected.
溶射層１４を形成した後、第２図ｈに示す如く
モデル面の裏面から合成樹脂、サンドコアあるい
はコンクリート等の裏打材１５を裏打ちする。 After forming the sprayed layer 14, as shown in FIG. 2h, a backing material 15 such as synthetic resin, sand core, or concrete is lined from the back side of the model surface.
続いて第２図ｉに示す如く溶射層１４から溶射
モデル１３を除去し、プレス型が完成する。 Subsequently, as shown in FIG. 2i, the sprayed model 13 is removed from the sprayed layer 14, and the press mold is completed.
このようにして第２図ｊに示す如く成形型とし
ては上型と下型を作成して完成型として鉄、非鉄
金属等の素材１６を成型する。 In this way, as shown in FIG. 2J, an upper mold and a lower mold are prepared, and a material 16 such as iron or non-ferrous metal is molded as a completed mold.
また、図示はしないが剪断型としても同様に作
成することができる。 Further, although not shown, it can be similarly produced as a shear type.
以上述べたように、本発明に係るプレス型の製
作方法によると、溶射モデルを作成するにあた
り、スラリー中に柱状部材を入れて固化させ、柱
状部材を除くことにより空洞部を作り、その後に
焼成してセラミツク型とし、その空洞部に補強材
を注型したことによりセラミツクのもろさを補足
して靭性のある溶射モデルとすることができて衝
撃に対して対抗力があり、取扱いが容易となる。 As described above, according to the press mold manufacturing method according to the present invention, when creating a thermal spray model, a columnar member is placed in slurry and solidified, a cavity is created by removing the columnar member, and then fired. By casting a reinforcing material into the cavity, it is possible to supplement the brittleness of ceramic and create a tough thermal sprayed model, which has resistance against impact and is easy to handle. .
また、溶射層のもつ残留収縮応力に十分耐えら
れ、単なるセラミツクだけによる溶射モデルより
も耐残留収縮応力が大きく、精度の高い型を製作
することができる利点を有する。 Further, it has the advantage that it can sufficiently withstand the residual shrinkage stress of the sprayed layer, has a higher resistance to residual shrinkage stress than a sprayed model made only of ceramic, and can manufacture molds with high precision.
第１図は従来の溶射モデルを示す断面図、第２
図は本発明のプレス型の製作方法を示す工程図で
ある。
３…基本モデル、５…スラリー、５ａ…セラミ
ツク型、６…柱状部材、８…治具、９…空洞部、
１０…空洞部に注型した補強材としての合成樹
脂、１３…溶射モデル、１４…溶射層、１５…裏
打材。
Figure 1 is a cross-sectional view showing a conventional thermal spray model, Figure 2
The figure is a process diagram showing a method for manufacturing a press die according to the present invention. 3... Basic model, 5... Slurry, 5a... Ceramic mold, 6... Column member, 8... Jig, 9... Cavity part,
DESCRIPTION OF SYMBOLS 10...Synthetic resin as a reinforcing material cast into the cavity, 13...Thermal sprayed model, 14...Thermal sprayed layer, 15...Backing material.
Claims (1)
の表面に金属を溶射して溶射層を形成し、その溶
射層を裏打材により裏打ちし、その後に溶射モデ
ルと溶射層とを分離してプレス型を製作する方法
において、 溶射モデルは、 基本モデルのモデル面上に形成した空間に柱状
部材を設けると共にこの柱状部材が設けられた空
間にスラリーを流し込んで固化させる工程と、 固化したスラリーから柱状部材を抜き取つて柱
状部材に対応する部分に空洞部を形成すると共に
固化したスラリーから基本モデルを分離させた
上、固化したスラリーを焼成してセラミツク型と
する工程と、 セラミツク型の空洞部に補強材を注入して硬化
させる工程、 とを経て作製されることを特徴とするプレス型の
製作方法。[Claims] 1. Spraying a metal onto the surface of a thermal sprayed model that has been transferred and molded from a basic model to form a thermal spraying layer, lining the thermal spraying layer with a backing material, and then bonding the thermal spraying model and the thermal spraying layer. In the method of separately manufacturing a press mold, the thermal spray model includes a step of providing a columnar member in a space formed on the model surface of the basic model, and pouring slurry into the space where this columnar member is provided and solidifying it. a step of extracting a columnar member from the slurry, forming a cavity in a portion corresponding to the columnar member, separating the basic model from the solidified slurry, and firing the solidified slurry to form a ceramic mold; A method for manufacturing a press mold, characterized in that the press mold is manufactured through the steps of: injecting a reinforcing material into the cavity of the mold and curing the reinforcing material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20865881A JPS58110138A (en) | 1981-12-23 | 1981-12-23 | Production of press die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20865881A JPS58110138A (en) | 1981-12-23 | 1981-12-23 | Production of press die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58110138A JPS58110138A (en) | 1983-06-30 |
| JPH0362489B2 true JPH0362489B2 (en) | 1991-09-26 |
Family
ID=16559895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20865881A Granted JPS58110138A (en) | 1981-12-23 | 1981-12-23 | Production of press die |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58110138A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5658506A (en) * | 1995-12-27 | 1997-08-19 | Ford Global Technologies, Inc. | Methods of making spray formed rapid tools |
-
1981
- 1981-12-23 JP JP20865881A patent/JPS58110138A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58110138A (en) | 1983-06-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109175307B (en) | 3D printing sand mold antigravity casting forming method | |
| US4919193A (en) | Mold core for investment casting, process for preparing the same and process for preparing mold for investment casting having therewithin said mold core | |
| EP0092690A1 (en) | Molding core for casting engine cylinder block | |
| JPH0362489B2 (en) | ||
| DK0625386T3 (en) | Precision molding method for making castings | |
| JPH0341245B2 (en) | ||
| JPS645806B2 (en) | ||
| JPH03182313A (en) | Manufacture of mold | |
| US4043378A (en) | Method for forming casting molds | |
| JPS6320619B2 (en) | ||
| CN109047665A (en) | A kind of novel non-transmision end end cap Sand-Faced Metal Mould Casting technique | |
| JPS60145243A (en) | Production of die | |
| US3393726A (en) | Method for making large precision die castings from cavityless casting molds | |
| KR100432795B1 (en) | Lost wax molding method of empted Jewelry | |
| JPH0813400B2 (en) | Precision casting method for castings having a narrow hollow portion | |
| JPH0367466B2 (en) | ||
| JP2799158B2 (en) | Shaping mold forming method, model used for the method and primary firing table | |
| WO2024035366A1 (en) | Concrete mold system and production method | |
| JPS6281246A (en) | Manufacture of metallic mold | |
| JPH02247039A (en) | Manufacture of heat resistant mold | |
| JPH0252144A (en) | Manufacture of pattern for precision casting | |
| SU761122A1 (en) | Casting mould production method | |
| JPS6149744A (en) | Casting method of zinc casting | |
| JPH10109137A (en) | Solid mold precision casting method | |
| KR100245745B1 (en) | Method of housing of power streering oil pump |