JPS5834216B2 - Method for manufacturing castings in a pit - Google Patents
Method for manufacturing castings in a pitInfo
- Publication number
- JPS5834216B2 JPS5834216B2 JP52080754A JP8075477A JPS5834216B2 JP S5834216 B2 JPS5834216 B2 JP S5834216B2 JP 52080754 A JP52080754 A JP 52080754A JP 8075477 A JP8075477 A JP 8075477A JP S5834216 B2 JPS5834216 B2 JP S5834216B2
- Authority
- JP
- Japan
- Prior art keywords
- bit
- casting
- wedge
- shaped body
- mold
- 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
Landscapes
- Moulds, Cores, Or Mandrels (AREA)
Description
【発明の詳細な説明】
本発明はビット内における鋳物の製造方法に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a casting in a bit.
大きな鋳物を鋳造する場合には、建屋または金枠の関係
から土間にビットを掘り、その中に鋳型を造型し、鋳造
後、鋳物をビットから取出すことが行なわれている。When casting a large casting, a bit is dug in the earthen floor of a building or a metal frame, a mold is formed in the bit, and after casting, the casting is taken out from the bit.
このとき、鋳物の周囲に耐着している鋳物砂も同時に取
り出されるが、このとき鋳型は加熱されて膨張している
ため、鋳物、周囲の鋳物砂、ビット壁とが互にせり合っ
ている。At this time, the molding sand clinging around the casting is also removed, but at this time the mold is heated and expanding, so the casting, the surrounding molding sand, and the bit wall come into contact with each other. .
このような状態でビットから鋳物を取り出すため、その
取り出しに犬なる時間がかかつていた。It took a considerable amount of time to remove the casting from the bit in this condition.
さらにジヤツキを用いねばならず、危険が伴っていた。Furthermore, it was necessary to use jacks, which was dangerous.
また鋳物を充分に冷却したのちビットから取り出しても
あまり良い効果は期待できなかった。Further, even if the casting was cooled sufficiently and then removed from the bit, no good effect could be expected.
本発明は上記問題点を解決し得るビット内における鋳物
の製造方法を提供するもので、以下その一実施例を図面
に基づいて説明する。The present invention provides a method for manufacturing a casting in a bit that can solve the above-mentioned problems, and one embodiment thereof will be described below with reference to the drawings.
１はビットを形成するビット壁で、上面解放の箱状に形
成してあり、その上面には分解可能な枠体２が設置され
る。Reference numeral 1 denotes a bit wall forming a bit, which is formed into a box-like shape with an open top, and a removable frame 2 is installed on the top of the bit wall.
そして先ず第１図、第２図に示すように、ビット壁内ｔ
ｌｎＩＡにくさび状体３を複数個セットする。First, as shown in FIGS. 1 and 2, t inside the bit wall is
Set a plurality of wedge-shaped bodies 3 on lnIA.
このくさび状体３は第３図に示すように、上端に折曲げ
係止部４と吊上げ用貫通孔５が形成され、この折曲げ係
止部４を枠体２に係止させることによりビット壁内面１
人にセットされるが、その長さはビット深さの約３／４
となる。As shown in FIG. 3, this wedge-shaped body 3 has a bending locking part 4 and a lifting through hole 5 formed at its upper end, and by locking this bending locking part 4 to the frame 2, the bit Wall inner surface 1
It is set manually, and its length is about 3/4 of the bit depth.
becomes.
またくさび状体３は上端中りを下端中ｌよりも犬にする
ことによりくさび形状となし、さらに厚さは、上端厚Ｔ
を下端厚ｔよりも厚くすることが好ましい。In addition, the wedge-shaped body 3 has a wedge shape by making the upper end center more dog-shaped than the lower end center 1, and further has a thickness of the upper end thickness T.
It is preferable that t be thicker than the lower end thickness t.
上述のようにくさび状体３をセットした状態でビット内
に、第４図に示すように鋳造砂６により鋳型７を造型し
、そして注湯を行って所期の鋳物を得る。With the wedge-shaped body 3 set as described above, a mold 7 is formed in the bit using casting sand 6, as shown in FIG. 4, and the desired casting is obtained by pouring the metal.
この鋳物の取出しは、先ず枠体２を分解除去してくさび
状体３の上端を露出させる。To take out the casting, first, the frame 2 is disassembled and removed to expose the upper end of the wedge-shaped body 3.
次いで吊上げ用貫通孔５をしてシャックルまたはワイヤ
ーを介してくさび状体３を吊上げ抜出させる。Next, the lifting through hole 5 is opened and the wedge-shaped body 3 is lifted up and extracted via a shackle or wire.
これによりハリヶが緩和され、鋳物を容易に取出せ得る
。This alleviates the tension and allows the casting to be easily removed.
なおくさび状体３は、ビットの周方向全域にあるいは部
分的にセットされるものである。Note that the wedge-shaped body 3 is set over the entire circumferential area of the bit or partially.
次に本発明の一実験例を従来例と比較する。Next, an experimental example of the present invention will be compared with a conventional example.
ここで条件は次の通りである。Here, the conditions are as follows.
製造した製品名 舶用内燃機部
シリンダージャケット（鋳鉄製）
鋳込重量 １５ｔ
なお（４）項においては、クレーンの最大荷重は４０ｔ
であるため、ジヤツキで地切りをしながら鋳物を取出し
た。Manufactured product name: Marine internal combustion engine cylinder jacket (made of cast iron) Casting weight: 15t Note that in item (4), the maximum load of the crane is 40t.
Therefore, I removed the casting while cutting it with a jack.
以上、実施例で述べた本発明によると、くさび状体の抜
出によりハリヶを緩和し得ることから、鋳物をまだ加熱
状態において取出すことができ、これは鋳物がビット内
に置かれている日数を短縮し得て、作業時数の短縮を可
能にできると共にビットの回転率を向上でき、さらに鋳
物取出しのためにジヤツキを使用しなくてもよいため安
全の確保が期待できるなど、良好な結果を得られる。According to the present invention described above in the embodiments, it is possible to alleviate the sticking by removing the wedge-shaped body, so that the casting can be taken out while it is still heated, and this is due to the number of days the casting is left in the bit. This has resulted in good results, such as being able to shorten the work time, improving the rotation rate of the bit, and also ensuring safety because there is no need to use jacks to take out the casting. You can get .
図面は本発明の一実施例を示し、第１図は鋳型造型前の
縦断面図、第２図は同上部の斜視図、第３図はくさび状
体の斜視図、第４図は造型後の縦断面図である。
１・・・・・・ビット壁、１Ａ・・・・・・ビット壁内
面、２・・・・・・枠体、３・・・・・・くさび状体、
４・・・・・・折曲げ係止部、５・・・・・・吊上げ用
貫通孔、６・・・・・・鋳物砂、７・・・・・・鋳型。The drawings show one embodiment of the present invention, in which Fig. 1 is a longitudinal cross-sectional view before molding, Fig. 2 is a perspective view of the upper part of the mold, Fig. 3 is a perspective view of the wedge-shaped body, and Fig. 4 is after molding. FIG. 1...Bit wall, 1A...Bit wall inner surface, 2...Frame body, 3...Wedge-shaped body,
4...Bending locking portion, 5...Through hole for lifting, 6...Casting sand, 7...Mold.
Claims (1)
たくさび状体を、その吊上げ用貫通孔を前記ビットの上
面部より上に出した状態で複数個セットし、その後前記
ビット内に鋳造砂により鋳型を造型し、次に該鋳型に注
湯を行なって所期の鋳物を得、次に前記複数のくさび状
体をその吊上げ用貫通孔を介して吊上げ抜出し、この後
ビットから鋳物を取出すことを特徴とするビット内にお
ける鋳物の製造方法。1. A plurality of wedge-shaped bodies each having a lifting through hole formed at the upper end are set on the inner surface of the bit wall with the lifting through hole protruding above the upper surface of the bit, and then cast into the bit. A mold is formed from sand, then poured into the mold to obtain the desired casting, and then the plurality of wedge-shaped bodies are lifted and extracted through the lifting through holes, and then the casting is removed from the bit. A method for manufacturing a casting in a bit, characterized by taking out a casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52080754A JPS5834216B2 (en) | 1977-07-05 | 1977-07-05 | Method for manufacturing castings in a pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP52080754A JPS5834216B2 (en) | 1977-07-05 | 1977-07-05 | Method for manufacturing castings in a pit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5414328A JPS5414328A (en) | 1979-02-02 |
| JPS5834216B2 true JPS5834216B2 (en) | 1983-07-25 |
Family
ID=13727186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP52080754A Expired JPS5834216B2 (en) | 1977-07-05 | 1977-07-05 | Method for manufacturing castings in a pit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5834216B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5116011A (en) * | 1974-07-30 | 1976-02-09 | Matsushita Electric Ind Co Ltd | Jikihetsudono seizohoho |
-
1977
- 1977-07-05 JP JP52080754A patent/JPS5834216B2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5116011A (en) * | 1974-07-30 | 1976-02-09 | Matsushita Electric Ind Co Ltd | Jikihetsudono seizohoho |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5414328A (en) | 1979-02-02 |
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