JPS6243632Y2 - - Google Patents
Info
- Publication number
- JPS6243632Y2 JPS6243632Y2 JP8482284U JP8482284U JPS6243632Y2 JP S6243632 Y2 JPS6243632 Y2 JP S6243632Y2 JP 8482284 U JP8482284 U JP 8482284U JP 8482284 U JP8482284 U JP 8482284U JP S6243632 Y2 JPS6243632 Y2 JP S6243632Y2
- Authority
- JP
- Japan
- Prior art keywords
- model
- base
- framework
- urethane resin
- lightweight material
- 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
- 239000003562 lightweight material Substances 0.000 claims description 12
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 12
- 238000005495 investment casting Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 239000004576 sand Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
【考案の詳細な説明】
Ａ 考案の目的
(1) 産業上の利用分野
本考案は、基盤にモデルが一体化されて成る精
密鋳造用金属鋳型のモデル構造に関する。[Detailed description of the invention] A. Purpose of the invention (1) Industrial application field The present invention relates to a model structure for a metal mold for precision casting, in which a model is integrated into a base.
(2) 従来の技術
精密鋳造用金属鋳型は、形状が複雑であつて高
精度の寸法および面粗度を必要とする製品の鋳造
加工に用いられるものであり、モデルを砂込めし
て得られる砂込め型に金属鋳込材を注湯すること
によつて得られる。したがつて、モデルとしても
高精度の寸法および面粗度が要求され、そのよう
な観点から、本出願人は鋳込材の縮み代分を見込
んだ寸法で硬質ウレタン樹脂を加工してモデルを
製造するようにしたモデルの製造方法を提案して
いる。このようにすれば、高精度のモデルを容易
に形成することができるが、モデルには、砂込め
時の枠体の底部を構成するための基盤を一体化し
て設けるのが一般的であり、この基盤をも硬質ウ
レタン樹脂で成形するようにすると、硬質ウレタ
ン樹脂の比重が比較的大（1.05〜1.25程度）であ
ることから、全体としての重さが大になる。(2) Conventional technology Metal molds for precision casting are used for casting products that have complex shapes and require highly accurate dimensions and surface roughness, and are made by filling models with sand. Obtained by pouring metal casting material into a sand mold. Therefore, highly accurate dimensions and surface roughness are required for the model, and from this perspective, the applicant created a model by processing a hard urethane resin with dimensions that take into account the shrinkage of the cast material. We are proposing a manufacturing method for the model. In this way, a high-precision model can be easily formed, but the model is generally provided with an integrated base to form the bottom of the frame during sand filling. If this base is also molded from a hard urethane resin, the overall weight will be large because the specific gravity of the hard urethane resin is relatively high (about 1.05 to 1.25).
(3) 考案が解決しようとする問題点
本考案は、上記事情に鑑みてなされたものであ
り、基盤の寸法はそれ程の高精度を必要とされな
いことから、モデルのみを硬質ウレタン樹脂製と
し、基盤を軽量材で成形して全体の重量軽減を図
るようにした精密鋳造用金属鋳型のモデル構造を
提供することを目的とする。(3) Problems that the invention aims to solve This invention was made in view of the above circumstances, and since the dimensions of the base do not require such high precision, only the model is made of hard urethane resin. The object of the present invention is to provide a model structure of a metal mold for precision casting in which the base is molded from a lightweight material to reduce the overall weight.
Ｂ 考案の構成
(1) 問題点を解決するための手段
本考案によれば、モデルは造型部の一端に全周
にわたつて鍔部を有するようにして硬質ウレタン
樹脂により成形され、軽量材から成る枠組が前記
鍔部を囲繞するようにして配置され、前記枠組と
ともに基盤を構成するための軽量材から成る定盤
に、前記モデルおよび枠組が結合される。B. Structure of the invention (1) Means for solving the problems According to the invention, the model is molded from hard urethane resin so that it has a flange around the entire circumference at one end of the molded part, and is made from lightweight material. A framework consisting of the model is disposed to surround the collar portion, and the model and the framework are coupled to a surface plate made of lightweight material that together with the framework constitutes a base.
(2) 作 用
基盤が軽量材から成る枠組および定盤で構成さ
れるので、全体としての重さが軽減される。(2) Function Since the base consists of a framework and surface plate made of lightweight materials, the overall weight is reduced.
(3) 実施例
以下、図面により本考案の一実施例について説
明すると、第１図および第２図において、このモ
デル構造は、自動二輪車用エンジンのミツシヨン
ケースを精密鋳造するためのものであり、モデル
１が基盤２に結合されて成る。(3) Example An example of the present invention will be described below with reference to drawings. In Figures 1 and 2, this model structure is for precision casting of a transmission case for a motorcycle engine. , a model 1 is coupled to a base 2.
モデル１は、造型部３の一端周縁に鍔部４が設
けられて成り、硬質ウレタン樹脂材を機械加工し
て形成される。しかも造型部３の寸法は、金属鋳
型の対応部分の寸法よりも鋳込材たとえばSKD
６１の縮み代分（たとえば1.5〜2.0％程度）大き
く定められ、その寸法をたとえば数値制御自動作
機にプログラミングして加工される。 The model 1 includes a flange 4 provided around one end of a molded part 3, and is formed by machining a hard urethane resin material. Moreover, the dimensions of the molding part 3 are larger than the dimensions of the corresponding part of the metal mold.
61 shrinkage allowance (for example, about 1.5 to 2.0%) is determined, and the size is programmed into, for example, a numerically controlled automatic machine for processing.
ここで、硬質ウレタン樹脂は、ウレタンおよび
無機質が主成分のシリカ系統のものであり、たと
えば米国フリーマン社製の商品名「レプロ10」に
該当するものが望ましい。この硬質ウレタン樹脂
は、適度の硬度があつて加工性に優れ、材料密度
が均一であるために温度変化による影響が少な
く、表面の仕上面も滑らかとなる特性を有する。 Here, the hard urethane resin is a silica-based resin whose main components are urethane and an inorganic substance, and preferably one corresponding to the trade name "Repro 10" manufactured by Freeman, Inc. in the United States. This hard urethane resin has a suitable hardness and excellent workability, has a uniform material density, is less affected by temperature changes, and has a smooth surface finish.
基盤２は枠組５および定盤６から構成され、枠
組５および定盤６とも軽量材たとえば木材によつ
て形成される。枠組５はモデル１の鍔部４と同一
の厚さを有し、該鍔部４を囲繞するようにして配
置され、枠組５およびモデル１は、定盤６の裏側
からボルト７によつて定盤６に結合される。この
ようにして、モデル１が基盤２に一体化される。 The base 2 is composed of a framework 5 and a surface plate 6, and both the framework 5 and the surface plate 6 are made of lightweight material, such as wood. The framework 5 has the same thickness as the flange 4 of the model 1, and is arranged so as to surround the flange 4. The framework 5 and the model 1 are fixed by bolts 7 from the back side of the surface plate 6. It is coupled to the board 6. In this way, the model 1 is integrated into the base 2.
次にこの実施例の作用について説明すると、モ
デル１と基盤２とが一体化されたモデル構造は、
砂込めにあたつて枠体の底部を基盤２で塞ぐよう
にして前記枠体内に配置され、その枠体内に上方
から砂込めし、その後モデル１および基盤２を枠
体から取外すことにより、砂込め型が成形され
る。 Next, to explain the operation of this embodiment, the model structure in which the model 1 and the base 2 are integrated is as follows.
When filling with sand, the base 2 is placed in the frame so as to close the bottom of the frame, and the sand is poured into the frame from above, and then the model 1 and the base 2 are removed from the frame. A mold is formed.
このような砂込め時に、基盤２が軽量材で形成
されているので、モデル構造全体の重量は軽減さ
れ、したがつて取扱いが容易となる。またモデル
１は硬質ウレタン樹脂で形成されるので、造型部
３の寸法精度が向上し、加工も容易となる。さら
にモデル１の鍔部４は枠組５で囲繞されるので、
運搬中のモデル１の破損が極力防止される。 During such sand filling, since the base 2 is made of a lightweight material, the weight of the entire model structure is reduced, and therefore handling becomes easy. Furthermore, since the model 1 is made of hard urethane resin, the dimensional accuracy of the molded part 3 is improved and processing becomes easy. Furthermore, since the flange 4 of the model 1 is surrounded by the framework 5,
Damage to Model 1 during transportation is prevented as much as possible.
以上の実施例では、枠組５および定盤６を形成
する軽量材として木材を用いたが、軽量材とし
て、硬質ウレタン樹脂よりも比重の小さい合成樹
脂を用いてもよい。 In the above embodiment, wood was used as the lightweight material forming the framework 5 and the surface plate 6, but a synthetic resin having a specific gravity smaller than that of hard urethane resin may also be used as the lightweight material.
Ｃ 考案の効果
以上のように本考案によれば、モデルは造型部
の一端周縁に鍔部を有するようにして硬質ウレタ
ン樹脂により成形され、軽量材から成る枠組が前
記鍔部を囲繞するようにして配置され、前記枠組
とともに基盤を構成するための軽量材から成る定
盤に、前記モデルおよび枠組が結合されるので、
モデルを精度良くかつ容易に加工することができ
るとともに、全体としての重量を軽減して、取扱
いを容易にすることができる。C. Effects of the invention As described above, according to the invention, the model is molded from hard urethane resin so as to have a flange around one end of the molded part, and a framework made of lightweight material surrounds the flange. The model and the framework are connected to a surface plate made of lightweight material that is arranged as a base and forms a base together with the framework.
The model can be processed easily and accurately, and the overall weight can be reduced, making handling easier.
図面は本考案の一実施例を示すものであり、第
１図は本考案構造の平面図、第２図は第１図の
−線視図である。
１……モデル、２……基盤、３……造型部、４
……鍔部、５……枠組、６……定盤。
The drawings show one embodiment of the present invention, and FIG. 1 is a plan view of the structure of the present invention, and FIG. 2 is a perspective view taken along the line shown in FIG. 1. 1... Model, 2... Base, 3... Molding department, 4
...Trim section, 5...Framework, 6...Surface plate.
Claims (1)
属鋳型のモデル構造において、前記モデルは、造
型部の一端周縁に鍔部を有するようにして硬質ウ
レタン樹脂により成形され、軽量材から成る枠組
が前記鍔部を囲繞するようにして配置され、前記
枠組とともに基盤を構成するための軽量材から成
る定盤に、前記モデルおよび枠組が結合されるこ
とを特徴とする精密鋳造用金属鋳型のモデル構
造。 In a model structure of a metal mold for precision casting in which a model is integrated into a base, the model is molded from hard urethane resin so as to have a flange around one end of the molded part, and the framework made of a lightweight material is attached to the base. A model structure of a metal mold for precision casting, characterized in that the model and the framework are connected to a surface plate made of lightweight material that is arranged to surround the flange and constitute a base together with the framework.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8482284U JPS614844U (en) | 1984-06-07 | 1984-06-07 | Model structure of metal mold for precision casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8482284U JPS614844U (en) | 1984-06-07 | 1984-06-07 | Model structure of metal mold for precision casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS614844U JPS614844U (en) | 1986-01-13 |
| JPS6243632Y2 true JPS6243632Y2 (en) | 1987-11-13 |
Family
ID=30634653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8482284U Granted JPS614844U (en) | 1984-06-07 | 1984-06-07 | Model structure of metal mold for precision casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS614844U (en) |
-
1984
- 1984-06-07 JP JP8482284U patent/JPS614844U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS614844U (en) | 1986-01-13 |
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