JPS63242440A - Pressing die for precision casting and production thereof - Google Patents
Pressing die for precision casting and production thereofInfo
- Publication number
- JPS63242440A JPS63242440A JP7804187A JP7804187A JPS63242440A JP S63242440 A JPS63242440 A JP S63242440A JP 7804187 A JP7804187 A JP 7804187A JP 7804187 A JP7804187 A JP 7804187A JP S63242440 A JPS63242440 A JP S63242440A
- Authority
- JP
- Japan
- Prior art keywords
- casting
- model
- mold
- precision casting
- die
- 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.)
- Pending
Links
- 238000005495 investment casting Methods 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 239000004576 sand Substances 0.000 claims abstract description 20
- 239000011347 resin Substances 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 16
- 239000011505 plaster Substances 0.000 claims description 10
- 238000005266 casting Methods 0.000 abstract description 21
- 238000003754 machining Methods 0.000 abstract description 8
- 238000010115 full-mold casting Methods 0.000 abstract description 6
- 238000001816 cooling Methods 0.000 abstract description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 abstract 2
- 239000010419 fine particle Substances 0.000 abstract 2
- 238000005187 foaming Methods 0.000 abstract 1
- 229910052602 gypsum Inorganic materials 0.000 abstract 1
- 239000010440 gypsum Substances 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 16
- 238000007730 finishing process Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 239000003110 molding sand Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 229920006248 expandable polystyrene Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- -1 zircon sand Chemical compound 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は各種プレス用金型の製作に用いて有用な精密鋳
造金型及びその製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a precision casting mold useful for manufacturing various press molds and a method for manufacturing the same.
従来の技術
一般にプレス用の各種金型を鋳造により製作するに際し
、第３図の工法「従来型」に見られるように、先ず前準
備（Ａ）にて製品図に基づく型図を興すとともにマスタ
ーモデルＭを製作し、次に材料工程（Ｂ）にて前記型図
に基づいて発泡スチロール等を利用したフルモールドキ
ャスティング（ＦＭＣ）による鋳物の製作及び前記マス
ターモデルＭを用いて倣い用石膏モデルのケラ−プラス
タ（ＫＰ）を準備し、次に機械加工工程（ｃ）にて前記
Ｆ’ＭＣにて得られた鋳物の基準底面を設定し、倣い用
石膏モデルＫＰを用いて下型及び上型の倣い加工を施し
、最後に仕上工程（Ｄ）にて得られた金型の目落し、モ
デル合わせ、上下合わせ及び板抜きを実施している。上
記仕上工程には大別して荒仕上、中仕上、仕上の３工程
があり、特に倣い加工時に発生する鋳物表面の粗面、通
常ピックフィードと呼ばれる不整面、を修正する工程が
重要に、なっている。Conventional technology Generally, when manufacturing various molds for presses by casting, as shown in the "conventional method" shown in Figure 3, first, in advance preparation (A), a mold drawing is created based on the product drawing and a master is created. A model M is produced, and then in the material process (B), a casting is produced by full mold casting (FMC) using foamed polystyrene etc. based on the mold diagram, and a plaster model for copying is made using the master model M. - Prepare plaster (KP), then set the reference bottom surface of the casting obtained by F'MC in the machining process (c), and use the copying plaster model KP to create the lower and upper molds. Copy processing is performed, and finally, the mold obtained in the finishing process (D) is removed, model matched, top and bottom matched, and board punched. The finishing process described above can be roughly divided into three processes: rough finishing, semi-finishing, and finishing, and the process of correcting the rough surface of the casting surface that occurs during profiling machining, which is usually called pick feed, is particularly important. There is.
発明が解決しようとする問題点
しかしながらこのような従来のプレス用金型及びその製
造方法を用いた場合には、機械加工工程（Ｃ）の加工工
数が極めて多くなってしまう外、仕上工程（Ｄ）での仕
上工数も増大し、その結果完成した金型の加工費が上昇
してしまうという問題点があった。Problems to be Solved by the Invention However, when such a conventional press mold and its manufacturing method are used, the number of man-hours in the machining process (C) becomes extremely large, and the finishing process (D ), which increases the number of finishing steps, resulting in an increase in processing costs for the completed mold.
そこで本発明はこのような従来のプレス用各種金型が有
している問題点を解消して、前記機械加工し工程及び仕
上工程での工数を極めて低減することができる精密鋳造
プレス金型及びその製法を提供することを目的とするも
のである。Therefore, the present invention provides a precision casting press die and a press die that can solve the problems of various conventional press dies and extremely reduce the number of man-hours in the machining process and finishing process. The purpose of this invention is to provide a method for producing the same.
問題点を解決するための手段
プレス用金型を構成する上型及び下型の少なくともワー
クが当接する面に、予じめ石膏又は樹脂で成る精鋳モデ
ル及び極微細な特殊砂を用いた精密鋳造手段によって製
作した鋳造品を配置したプレス金型及びその製法を提供
する。Means for solving the problem At least the surfaces of the upper and lower molds that make up the press mold that come into contact with the workpiece are precast with a cast model made of plaster or resin and a precision cast model made of ultra-fine special sand. Provided is a press mold in which a cast product manufactured by a casting method is arranged, and a method for manufacturing the same.
作用
金型の少なくともワークが当接する而に、精鋳モデル及
び極微細な特殊砂を用いた精密鋳造品が配置されるので
、機械加工工程における倣い加工を無くすことができる
上、仕上工程における仕上時間を極めて短縮することが
できて、全体として金型の加工費が低減されるという作
用がもたらされる。Since the precision casting model and the precision casting using ultra-fine special sand are placed at least in the area of the working mold that the workpiece comes into contact with, it is possible to eliminate copying in the machining process, and also to improve the finishing process in the finishing process. This brings about the effect that the time can be extremely shortened and the processing cost of the mold can be reduced as a whole.
実施例
以下本発明に係る精密鋳造プレス金型及びその製造方法
の一実施例を説明する。EXAMPLE An example of a precision casting press mold and a method for manufacturing the same according to the present invention will be described below.
第１図はプレス金型の全体を示す断面図であって、図中
１は上型を示し、ダイ２及びリブ３，３が一体に形成さ
れており、図外の駆動体に連結されて上下動する。４は
上型１の取付座１ａにボルト５を用いて固定されたガイ
ド部を示す。一方下型６はポンチ６ａ及びブランクホル
ダ６ｂとで成り、該ブランクホルダ６ｂの下面にクッシ
ョンピン７を当接させて適度な弾性力を付与している。FIG. 1 is a cross-sectional view showing the entire press die, in which 1 indicates the upper die, in which the die 2 and ribs 3, 3 are integrally formed, and are connected to a drive body (not shown). Move up and down. Reference numeral 4 indicates a guide portion fixed to the mounting seat 1a of the upper mold 1 using bolts 5. On the other hand, the lower die 6 is composed of a punch 6a and a blank holder 6b, and a cushion pin 7 is brought into contact with the lower surface of the blank holder 6b to impart an appropriate elastic force.
８は加工処理するワークが挿通される空間部である。本
発明にあっては、前記」二型ｌ及び下型６の少なくとも
ワークが当接する面に、後述する精密鋳造手段によって
製作した鋳造品を配置したことが特徴となっている。8 is a space portion through which a workpiece to be processed is inserted. The present invention is characterized in that a cast product manufactured by precision casting means described later is disposed on at least the surfaces of the second mold 1 and the lower mold 6 that are in contact with the workpiece.
第２図は上記の精密鋳造手段を示す断面図であり、図中
Ｉ！は鋳型、１２は該鋳型１１内に投入された鋳物砂で
あって、通常珪砂を主体とし、バインダーとしてフラン
系の樹脂を混合したものを用いる。１３は特殊砂を示し
ており、通常ジルコン砂等極微細な砂を主体とし、
バインダーとしてウレタン系の樹脂を混合したものを用
いる。１４ａは前記上型ｌを鋳込むためのキャビティを
示し、１４ｂは前記ダイ２を鋳込むためのキャビティ、
１４ｃ、１４ｃは而記リブ３．３を鋳込むためのキャビ
ティ、１４ｄは前記取付座１ａを鋳込むためのキャビテ
ィを夫々示している。１５は鋳物砂を示しており、前記
した鋳物砂１２と同質材のものを用いる。１６は鋳湯を
流し込む烏口、１７は湯道、１８は堰を示す。FIG. 2 is a sectional view showing the precision casting means described above, and I! 1 is a mold, and 12 is foundry sand charged into the mold 11, which is usually mainly composed of silica sand mixed with a furan-based resin as a binder. 13 indicates special sand, which is usually made mainly of extremely fine sand such as zircon sand, mixed with urethane resin as a binder. 14a indicates a cavity for casting the upper die 1; 14b indicates a cavity for casting the die 2;
14c and 14c are cavities into which the ribs 3.3 are cast, and 14d are cavities into which the mounting seat 1a is cast. Reference numeral 15 designates molding sand, which is made of the same material as the molding sand 12 described above. Reference numeral 16 indicates a grate into which the casting metal is poured, 17 indicates a runner, and 18 indicates a weir.
上記の構成において、上型ｌを鋳込むためのキャビティ
１４ａは、予じめ石膏又は樹脂を素材とする精鋳モデル
を用いて形成したものであり、その他のキャビティ１４
ｂ、１４ｃ、１４ｄは夫々通常の発泡スチロール等をモ
デルとするフルモールドキャスティング（Ｆ’ＭＣ）手
段に因って形成したものである。In the above configuration, the cavity 14a for casting the upper mold l is formed in advance using a cast model made of plaster or resin, and the other cavities 14
b, 14c, and 14d are each formed by full mold casting (F'MC) means using ordinary foamed polystyrene as a model.
このようなキャビティ１４ａ、＋４ｂ、１４ｃ。Such cavities 14a, +4b, 14c.
１４ｄを作成するには、通常の鋳造手段を用いれば良い
が、図示例の場合、上下関係を逆にして鋳物砂１５を先
ず入れ、ＦＭＣモデル、精鋳モデルをセットして特殊砂
１３．鋳物砂１２を入れた後、前記各モデルを抜くこと
によって各キャビティ１４ａ、１４ｂ、１４ｃ、１４ｄ
及び湯道１７、堰１８を形成することができる。しかる
後に湯口１６から鋳湯を流し込むことによって、該鋳湯
が堰１８を通過し、各キャビティ１４ａ、１４ｂ、１４
ｃ、＋４ｄを満たし、冷却固化して上型１が完成する。14d can be made using a normal casting method, but in the illustrated example, the molding sand 15 is first put in with the upper and lower relationship reversed, the FMC model and the cast model are set, and the special sand 13. After filling the molding sand 12, each of the cavities 14a, 14b, 14c, 14d is formed by pulling out each model.
Also, a runner 17 and a weir 18 can be formed. Thereafter, by pouring the cast metal from the sprue 16, the cast metal passes through the weir 18 and fills each cavity 14a, 14b, 14.
c and +4d are filled, and the upper mold 1 is completed by cooling and solidifying.
尚下型６も同様な鋳造手段によって製作することが可能
であることは当然である。It goes without saying that the lower mold 6 can also be manufactured by a similar casting method.
かかる精密鋳造手段によれば、プレス用金型を構成する
上型及び下型の少なくともワークが当接する面は、石膏
又は樹脂で成る精鋳モデルと特殊砂１３との組合わせに
よって形成されたキャビティ１４ａを用いて鋳造するこ
とができるので、極めてきめの細かな鋳物表面が得られ
る。According to this precision casting means, at least the surfaces of the upper mold and the lower mold constituting the press mold that come into contact with the workpiece are formed by a cavity formed by a combination of a precision casting model made of plaster or resin and special sand 13. 14a, an extremely fine-grained casting surface can be obtained.
本発明に係る精密鋳造方法を用いる工法は、第３図の工
法「精鋳型」に見られるように、前準備（Ａ）にて製品
図に基づく型図を興するとともにマスターモデルＭを製
作し、次に材料工程（Ｂ）にて石・ａ又は樹脂を用いた
精鋳モデルと前記特殊砂とを併用した精鋳鋳物を鋳造す
る。同時に仕上げ時のモデル合わせに用いる石膏モデル
ＫＰを準備する。尚、Ｆ’ＭＣは前記ダイ２、リブ３等
を鋳造する際に用いるモデル作成に利用する。得られた
精鋳鋳物は機械加工工程（Ｃ）にて基準底面のみ設定し
、直ちに次段の仕上工程（Ｄ）にてモデル合わせ、上下
合わせを行って製品として完成する。従って本発明に基
づく精鋳手段は、機械加工工程（Ｃ）における倣い加工
が廃止できるとともに、仕上工程（Ｄ）における仕上工
数が極めて短縮されていることが特徴となっている。The method using the precision casting method according to the present invention involves creating a mold drawing based on the product drawing and producing a master model M in the preliminary preparation (A), as shown in the method "precision mold" in Figure 3. Next, in the material step (B), a precision casting is cast using both a precision casting model using stone/a or resin and the special sand. At the same time, prepare a plaster model KP to be used for model matching during finishing. Incidentally, F'MC is used to create a model used when casting the die 2, ribs 3, etc. The obtained precision casting is subjected to a machining process (C) in which only the reference bottom surface is set, and immediately in the next finishing process (D), the model is matched and the top and bottom are aligned to complete the product. Therefore, the precision casting means according to the present invention is characterized in that the copying process in the machining process (C) can be eliminated, and the number of finishing steps in the finishing process (D) is extremely shortened.
発明の効果
以上詳細に説明した如く、本発明に係る精密鋳造プレス
用金型及びその製造方法によれば、プレス用金型を構成
する上型及び下型の少なくともワークが当接する面に、
予じめ石膏又は樹脂で成る精鋳モデル及び極微細な特殊
砂を用いた精密鋳造手段によって製作した鋳造品を配置
したプレス金型及びその製造方法を提供するものであり
、以下に記す各種の作用効果がもたらされる。即ち得ら
れた鋳造金型の少なくともワークが当接する面は、前記
精鋳モデルと特殊砂との組合わせによって形成されたキ
ャビティを用いられて鋳込まれているので、極めてきめ
の細かい鋳物表面が得られ、倣、い加工を実施しなくと
も良いという利点がある。Effects of the Invention As explained in detail above, according to the precision casting press mold and the manufacturing method thereof according to the present invention, at least the surfaces of the upper mold and the lower mold constituting the press mold, which are in contact with the workpiece,
The present invention provides a press mold in which a cast model made of plaster or resin and a cast product manufactured by a precision casting method using ultra-fine special sand are placed, and a method for manufacturing the same. Effects are brought about. In other words, at least the surface of the resulting casting mold that the workpiece comes into contact with is cast using a cavity formed by a combination of the precision casting model and special sand, so that an extremely fine-grained casting surface is obtained. The advantage is that there is no need to carry out copying or cutting.
更に仕上工程においても、単にモデル合わせ及び上下合
わせのみ行えば良く、鋳物表面の目落し及び板抜き等の
面倒な作業を廃止することが可能と′なって、仕上工程
自体が極めて簡略化することができる。その結果として
プレス金型の製作に要する加工工数を大巾に低域して、
コストを低廉化することができるという効果を発揮する
ものである。Furthermore, in the finishing process, it is only necessary to align the models and align the top and bottom, making it possible to eliminate troublesome operations such as drilling the surface of the casting and punching out plates, which greatly simplifies the finishing process itself. Can be done. As a result, the number of man-hours required to manufacture press molds has been significantly reduced,
This has the effect of reducing costs.
第１図は本発明を適用したプレス金型の全体を示す断面
図、第２図は精密鋳造手段を示す要部断面図、第３図は
従来型と本発明に係る精鋳型との工法を比較する表であ
る。
■・・・上型、２・・・グイ、３・・・リブ、４・・・
ガイド部、６ａ・・・ポンチ、６ｂ・・・ブランクホル
ダ、６・・・下型、７・・・クッションビン、ＩＩ・・
・鋳型、１２．１５・・・鋳物砂、１３ ・・・特殊砂
、１４ａ、１４ｂ、１４ｃ。
＋４ｄ・・・キャビティ、１６・・・湯口、１７・・・
湯道、１８・・・堰。Fig. 1 is a sectional view showing the entire press mold to which the present invention is applied, Fig. 2 is a sectional view of essential parts showing the precision casting means, and Fig. 3 is a sectional view showing the construction method of the conventional type and the precision casting mold according to the present invention. This is a table for comparison. ■... Upper mold, 2... Gui, 3... Rib, 4...
Guide part, 6a... Punch, 6b... Blank holder, 6... Lower die, 7... Cushion bin, II...
- Mold, 12.15... Foundry sand, 13... Special sand, 14a, 14b, 14c. +4d...Cavity, 16...Gate, 17...
Hot water path, 18...weir.
Claims (2)
もワークが当接する面に、予じめ石膏又は樹脂で成る精
鋳モデル及び極微細な特殊砂を用いた精密鋳造手段によ
って製作した鋳造品を配置したことを特徴とする精密鋳
造プレス金型。(1) At least the surfaces of the upper and lower molds that make up the press mold that come into contact with the workpiece are made in advance by precision casting using a cast model made of plaster or resin and ultrafine special sand. A precision casting press mold characterized by the arrangement of cast products.
な特殊砂を用いて鋳型を構成し、該鋳型内に鋳湯を流し
込んで金型を構成する上型及び下型の少なくともワーク
が当接する面を精密鋳造したことを特徴とする精密鋳造
プレス金型の製造方法。(2) A mold is constructed in advance using a cast model made of plaster or resin and ultra-fine special sand, and at least the workpiece of the upper mold and the lower mold is constructed by pouring cast metal into the mold. A method for manufacturing a precision casting press mold, characterized in that the surface in contact with is precision cast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7804187A JPS63242440A (en) | 1987-03-31 | 1987-03-31 | Pressing die for precision casting and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7804187A JPS63242440A (en) | 1987-03-31 | 1987-03-31 | Pressing die for precision casting and production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63242440A true JPS63242440A (en) | 1988-10-07 |
Family
ID=13650747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7804187A Pending JPS63242440A (en) | 1987-03-31 | 1987-03-31 | Pressing die for precision casting and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63242440A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55109543A (en) * | 1979-02-14 | 1980-08-23 | Tokujiro Ishihara | Casting method of nonferrous alloys and mold thereof |
| JPS56154251A (en) * | 1980-04-26 | 1981-11-28 | Kubota Ltd | Mold for nonworking of shape tube |
-
1987
- 1987-03-31 JP JP7804187A patent/JPS63242440A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55109543A (en) * | 1979-02-14 | 1980-08-23 | Tokujiro Ishihara | Casting method of nonferrous alloys and mold thereof |
| JPS56154251A (en) * | 1980-04-26 | 1981-11-28 | Kubota Ltd | Mold for nonworking of shape tube |
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