JPS6021808B2 - Metal seal mold that uses metal shrinkage to facilitate mold removal - Google Patents
Metal seal mold that uses metal shrinkage to facilitate mold removalInfo
- Publication number
- JPS6021808B2 JPS6021808B2 JP8695182A JP8695182A JPS6021808B2 JP S6021808 B2 JPS6021808 B2 JP S6021808B2 JP 8695182 A JP8695182 A JP 8695182A JP 8695182 A JP8695182 A JP 8695182A JP S6021808 B2 JPS6021808 B2 JP S6021808B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- metal seal
- metal
- shrinkage
- constriction
- 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
- 239000002184 metal Substances 0.000 title claims description 35
- 229910052751 metal Inorganic materials 0.000 title claims description 35
- 238000005266 casting Methods 0.000 claims description 4
- 238000007711 solidification Methods 0.000 claims 1
- 230000008023 solidification Effects 0.000 claims 1
- 239000004576 sand Substances 0.000 description 4
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/28—Moulds for peculiarly-shaped castings for wheels, rolls, or rollers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
【発明の詳細な説明】
本発明は鉱山・土木機械等のキャタピラの回転軸部分に
使用する金属シールを主として鋳造する鋳型に係るもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mold for mainly casting metal seals used in rotating shafts of caterpillars in mining, civil engineering, etc. machines.
この金属シールは円形リング状のものであるが、その外
面上部にくびれ部を有しているために、その鋳造を困難
にしているＺ現状であるが、本発明はこのくびれ部を有
する金属シールの鋳造を容易にしようとするものである
。以下図面により本発明の実施例を説明すると、第１図
は本発明による金属シールの鋳型の断面図２であるが、
図中１は主型、２は丸中子、３は底板、４は金属シール
、５は湯道である。This metal seal has a circular ring shape, but it has a constriction at the top of its outer surface, which makes it difficult to cast.However, the present invention provides a metal seal having this constriction. The aim is to facilitate the casting of Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view 2 of a mold for a metal seal according to the present invention.
In the figure, 1 is the main mold, 2 is the round core, 3 is the bottom plate, 4 is the metal seal, and 5 is the runner.
主型１は金属シール４のくびれ都ａとその上段の凸設部
ｂを形成するための凸設部ｃと凹設部ｄを有する成型部
を内面に有し、且つ上面中央に円形の表面孔２を有する
ものである。丸中子２は金属シール４の内面を成型し得
る形状と大きさのものとし、且つ適宜な厚さを有する中
空状のものである。下型３は主型１の下部にあって、金
属シール４の下面を成型すると同時に、丸中子２の下部
を保持するも３のであるが、この下型３は丸中子２と一
体を成す砂型でもよく、又図の如く丸中子２と分離した
金型であっても差支えないものである。上記の主型１と
丸中子２及び下型３を組合せた場合に形成される中空部
に湯道５から溶湯が注入されて金属シール４が鋳造され
るものである。前記した如く溶湯は湯道５を経由して鋳
型内で金属シール４を成型するのであるが、その場合溶
湯は冷却硬化と共に収縮するが、その収縮は金属シール
４の中心方向に向ってのものとなるので、丸中子２を圧
縮しながらの収縮となるのである。The main mold 1 has a molded part on the inner surface having a convex part c and a concave part d for forming the constricted part a of the metal seal 4 and the convex part b on the upper stage thereof, and has a circular surface in the center of the upper surface. It has a surface hole 2. The round core 2 is hollow and has a shape and size that can mold the inner surface of the metal seal 4, and has an appropriate thickness. The lower mold 3 is located at the lower part of the main mold 1 and molds the lower surface of the metal seal 4, and at the same time holds the lower part of the round core 2. This lower mold 3 is integral with the round core 2. A sand mold may be used to form the round core 2, or a mold separate from the round core 2 as shown in the figure may be used. A metal seal 4 is cast by injecting molten metal from a runner 5 into a hollow portion formed when the main mold 1, round core 2, and lower mold 3 are combined. As mentioned above, the molten metal passes through the runner 5 and forms the metal seal 4 in the mold. In this case, the molten metal contracts as it cools and hardens, but the contraction is toward the center of the metal seal 4. Therefore, the round core 2 contracts while being compressed.
従って硬化と収縮がほぼ収まった時点に於てし、は第２
図に示す如く金属シール４の外面が主型１の内面から離
れて、その部分に金属シール４の収縮ぅ寸法に等しい間
隙が生じることになる。そして、この場合主型１の凸設
部ｃの直径を収縮した金属シール４のくびれ部ａの上段
の凸設部ｂの直径よりも大となる如く予め設定すること
により、主型１内で凝固収縮した金属シール４を底板３
の開放０により下方に型抜きすることが可能になるので
ある。尚、本発明の実施に当っては、第３図に示す如く
同形の主型１を積層して組合せ、それぞれの主型１に丸
中子２を内蔵して立体的に紙立てる方法夕も有効である
。Therefore, at the point when hardening and shrinkage have almost subsided, the second
As shown in the figure, the outer surface of the metal seal 4 is separated from the inner surface of the main mold 1, and a gap equal to the shrinkage dimension of the metal seal 4 is created at that part. In this case, the diameter of the convex part c of the main mold 1 is set in advance to be larger than the diameter of the convex part b of the upper stage of the constricted part a of the contracted metal seal 4. The solidified and shrunk metal seal 4 is attached to the bottom plate 3.
By opening 0, it becomes possible to cut the mold downward. In carrying out the present invention, the main molds 1 of the same shape are stacked and combined as shown in FIG. It is valid.
即ち、この実施方法の場合の鋳型は１回の注湯により大
量の金属シール４を鋳造することが出来るのである。以
上の如く本発明を実施することにより、くびれ部を有す
る金属シール４を容易に鋳造し得るの０である。That is, the mold in this implementation method can cast a large amount of metal seals 4 by one pouring. By implementing the present invention as described above, it is possible to easily cast the metal seal 4 having the constricted portion.
従釆この金属シール４の鋳造は、そのくびれ部の存在の
ために煩しい作業となっていた。つまり図において主型
１の部分を砂型にして成型するか、若しくはくびれ部の
ない鋳造品から機械切削によりくびれ部を形成すること
によっていた。しかしくびれ部の成型に砂型を使用する
場合はこの金属シールの外面は精度、外観とも優れたも
のが要求されるので、それに適応した高価なシェルモー
ルド砂型を１回毎に新しく使用するために高価なものと
なり、また機械加工による場合は、この金属シールの材
質が特殊鋳鉄である関係上、鏡放し硬化がＨＲＣ６０前
後と非常に硬いので容易でない難点があった。本発明は
従来のこの金属シール製造上の難点を解決するもので、
而かも長期間反復使用し得る金型等の耐久型を使用する
のでコスト安ともなり、且つ外観上も美麗な金属シール
を提供することになるものである。Casting of this metal seal 4 has been a troublesome work due to the presence of the constricted portion. That is, as shown in the figure, the main mold 1 is molded using a sand mold, or a constriction is formed by machine cutting from a cast product that does not have a constriction. However, when using a sand mold to mold the constriction, the outer surface of this metal seal must have excellent accuracy and appearance, so expensive shell mold sand molds that are suitable for this need to be used anew each time. In addition, when machining is used, since the material of this metal seal is special cast iron, the mirror hardening is very hard with HRC of around 60, which is difficult to do. The present invention solves this conventional difficulty in manufacturing metal seals.
Moreover, since a durable mold such as a mold that can be used repeatedly for a long period of time is used, the cost is reduced and a metal seal with a beautiful appearance is provided.
第１図は本発明による鋳型を組合せた状態を示す断面図
、第２図は主型内で金属シールが収縮した状態を示す断
面図、第３図は本発明の異なる実施態様による鋳型を組
合せた状態を示す断面図である。
１・・・・・・主型、２…・・・丸中子、３・・・・・
・下型、４・・・・・・金属シール、５・・…・湯道、
ａ…・・・金属シールのくびれ部、ｂ・・・・・・その
凸設部、ｃ・・・・・・主型内の凸設部、ｄ・・・・・
・その凹設部。
オー園
冴Ｚ濁
才３図FIG. 1 is a cross-sectional view showing a state in which molds according to the present invention are combined, FIG. 2 is a cross-sectional view showing a state in which the metal seal is contracted within the main mold, and FIG. 3 is a cross-sectional view showing a state in which molds according to different embodiments of the present invention are combined. FIG. 1... Main mold, 2... Round core, 3...
・Lower mold, 4...metal seal, 5...runner,
a...Constriction of the metal seal, b...Protrusion thereof, c...Protrusion within the main mold, d...
・The recessed part. Ozono Sae Zakusai 3 illustrations
Claims (1)
おいて、該くびれ部を形成する主型内成型部の凸設部の
直径を、凝固収縮後の金属シールのくびれ部を形成する
上段の凸設部の直径よりも大となる如くに設定すること
により、鋳造後の金属シールが鋳型内より取出せるよう
にしたことを特徴とする金属収縮を利用して型抜きを容
易にする金属シールの鋳型。1. In a mold for a metal seal that has a constriction on the upper edge of the outer periphery, the diameter of the convex part of the molded part in the main mold that forms the constriction is equal to the diameter of the convex part that forms the constriction of the metal seal after solidification and shrinkage. A metal seal that can be easily removed from the mold by utilizing metal shrinkage, which is characterized in that the metal seal after casting can be taken out from the mold by setting the diameter to be larger than the diameter of the installed part. template.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8695182A JPS6021808B2 (en) | 1982-05-21 | 1982-05-21 | Metal seal mold that uses metal shrinkage to facilitate mold removal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8695182A JPS6021808B2 (en) | 1982-05-21 | 1982-05-21 | Metal seal mold that uses metal shrinkage to facilitate mold removal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58202949A JPS58202949A (en) | 1983-11-26 |
| JPS6021808B2 true JPS6021808B2 (en) | 1985-05-29 |
Family
ID=13901174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8695182A Expired JPS6021808B2 (en) | 1982-05-21 | 1982-05-21 | Metal seal mold that uses metal shrinkage to facilitate mold removal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6021808B2 (en) |
-
1982
- 1982-05-21 JP JP8695182A patent/JPS6021808B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58202949A (en) | 1983-11-26 |
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