JPH0523813A - Metallic mold for centrifugal casting - Google Patents
Metallic mold for centrifugal castingInfo
- Publication number
- JPH0523813A JPH0523813A JP17354791A JP17354791A JPH0523813A JP H0523813 A JPH0523813 A JP H0523813A JP 17354791 A JP17354791 A JP 17354791A JP 17354791 A JP17354791 A JP 17354791A JP H0523813 A JPH0523813 A JP H0523813A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- metallic mold
- centrifugal casting
- members
- shape
- 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.)
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- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】遠心鋳造法に用いる金型に関し、
回転軸方向にわたって内面形が同一形状の遠心鋳造用金
型に関する。[Industrial application] Regarding molds used in centrifugal casting,
The present invention relates to a centrifugal casting mold having the same inner surface shape in the rotation axis direction.
【０００２】[0002]
【従来の技術】従来、この種の金型は一体成形されてお
り、金型となる部材の内面は、切削加工によって形成さ
れていた。2. Description of the Related Art Heretofore, a mold of this type has been integrally molded, and the inner surface of a member serving as a mold has been formed by cutting.
【０００３】[0003]
【発明が解決しようとする課題】従来の遠心鋳造用金型
について一般的なその製作手順の一例を示すと、まず金
型となる部材を固定し、切削機械本体に固定された柄に
取り付けた刃物を、前記部材に当てて金型の回転軸芯方
向に往復運動させて内側を削ったり繰り抜いたりして製
作するものである。以上のような製作方法で金型を造る
場合その内面の出来上り寸法及び形状には自ずから制限
が生じる。An example of a general manufacturing procedure for a conventional centrifugal casting mold is as follows. First, a member to be the mold is fixed and then attached to a handle fixed to the main body of the cutting machine. The blade is applied to the member and reciprocally moved in the direction of the axis of rotation of the mold to scrape or hollow the inner side of the tool to manufacture it. When the mold is manufactured by the above-described manufacturing method, the finished size and shape of the inner surface are naturally limited.
【０００４】即ち、刃物を前記部材の中にいれて削るた
めに、金型の内空断面寸法を刃物の大きさより小さくす
ることはできないし、長さ寸法についても刃物を支える
柄がたわんだりするため長尺になればなるほど金型回転
軸に合わせた削り加工が困難となる。さらに、機械によ
る加工であるために複雑な内空断面形状に加工すること
は困難である。That is, since the blade is put in the member and is ground, the inner cross-sectional dimension of the mold cannot be made smaller than the size of the blade, and the handle that supports the blade bends in the length dimension. Therefore, the longer the length, the more difficult it becomes to carry out shaving according to the mold rotation axis. Further, since it is machined, it is difficult to machine it into a complicated inner-air cross-sectional shape.
【０００５】このように従来の金型は、内空断面が小さ
かったり長さ寸法が大きかったり複雑な形であったりす
るものは加工できない欠点があった。As described above, the conventional mold has a drawback that it cannot be processed if it has a small inner cross section, a large length dimension, or a complicated shape.
【０００６】そこで本発明においては上記欠点を解消
し、内空断面が小さく長さ寸法が大きい金型でも簡単に
形成でき、しかも複雑な内面形状であっても容易に形成
できる遠心鋳造用金型を提供することを目的とする。Therefore, in the present invention, the above-mentioned drawbacks are solved, and a mold for centrifugal casting can be easily formed even with a mold having a small inner cross section and a large length dimension, and even a complicated inner surface shape can be easily formed. The purpose is to provide.
【０００７】[0007]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明の遠心鋳造用金型は、回転軸周方向に分割
した形状をもつ金型用部材を組み合わせて一体化して構
成してあることを特徴とする。In order to achieve the above object, the centrifugal casting mold of the present invention is formed by combining and integrally forming mold members having a shape divided in the circumferential direction of the rotation axis. It is characterized by being present.
【０００８】[0008]
【作用】つまり、金型は分割したものであるから、それ
ぞれ別体に製作できると共に金型の内面に当たる部分の
加工も表に露出した状態でできるため複雑な内面形状の
加工も容易となる。又、部材の組合せによっても色々な
内面形状の金型が得られる。一方、断面寸法が小さく長
尺の金型でも、その加工に制約を受けることなく形成す
ることができる。In other words, since the molds are divided, they can be manufactured separately, and the part corresponding to the inner surface of the mold can be processed in a state where it is exposed to the surface, so that the complicated inner surface shape can be easily processed. Further, various inner surface molds can be obtained by combining the members. On the other hand, even a long mold having a small cross-sectional dimension can be formed without being restricted by its processing.
【０００９】[0009]
【発明の効果】従って、内空断面が複雑な形状の金型
や、内空断面が小さく長尺の金型も簡単に造ることがで
きるようになり、それに伴って今まで遠心鋳造法では造
ることができなかった小径で長く複雑な断面形状の鋳物
も造り得るようになった。As a result, it becomes possible to easily manufacture a die having a complicated inner cross-section and a long die having a small inner cross-section. It has become possible to produce castings with small diameters and long and complex cross-sectional shapes that were not possible.
【００１０】一方、前記分割した金型用部材どうしの結
合に溶接を使うことで、一体として強度の高い金型が得
られ、鋳込みによる金型の変形も抑えることができるよ
うになった。On the other hand, by using welding to connect the divided mold members together, a mold having high strength can be obtained and deformation of the mold due to casting can be suppressed.
【００１１】他の結合構造として金型の回転軸周方向に
外枠を外嵌させることによって、金型の組立・結合が非
常に簡単にでき分解も可能となる。As another connecting structure, by externally fitting the outer frame in the circumferential direction of the rotating shaft of the mold, the assembling and connecting of the mold can be made very simple and the mold can be disassembled.
【００１２】さらに、この外枠をリング状にして設けれ
ばその外周面を金型支持ローラーの接当部として兼用で
きるため別途に前記接当部を加工して設ける必要がなく
金型コストの低減も図れるようになる。Further, if the outer frame is provided in a ring shape, the outer peripheral surface thereof can also serve as the abutment portion of the die supporting roller, so that it is not necessary to separately process the abutment portion to provide the die cost. It will be possible to reduce it.
【００１３】一方、分割構成する金型が薄肉の場合、そ
の金型を鋳ぐるみによって結合すると、金型全体の肉厚
が増して強度の向上した熱容量の高い金型となり金型の
破損防止効果があり、更に金枠を外嵌させる場合には金
枠の歪防止効果がある。On the other hand, in the case where the mold to be divided is thin-walled, if the molds are joined together by casting, the wall thickness of the entire mold increases, resulting in a mold with improved heat strength and high heat capacity. In addition, when the metal frame is externally fitted, it has an effect of preventing distortion of the metal frame.
【００１４】[0014]
【実施例】以下に本発明の実施例を図面に基づいて説明
する。Embodiments of the present invention will be described below with reference to the drawings.
【００１５】図２には本発明の遠心鋳造用金型を支持ロ
ーラー３に設置した状況を示してある。まず金型５と、
それを支える支持ローラー３と、金型５が支持ローラー
３上で回転してもその位置がずれないようにすると共に
駆動ローラー３ａが接当してその回転力を金型５に伝え
るために金型５外周に設けた接当部４が示されている。
前記支持ローラー３は金型５を図に見られるように少な
くとも４箇所で支持しており、そのうち駆動用モーター
に連結されている駆動用ローラー３ａがあり、この駆動
用ローラー３ａをモーターで回転させることで、その回
転力が金型５の接当部４との摩擦で金型５に伝わり金型
５は回転する。又、前記支持ローラー３・駆動用ローラ
ー３ａの形状はその回転軸の一端部で厚みのある鍔状に
してあり、この鍔上部が前記金型５に設けた接当部４側
面に当たることで金型５のずれを防止している。FIG. 2 shows a state in which the centrifugal casting mold of the present invention is installed on the support roller 3. First, mold 5
Even if the supporting roller 3 that supports it and the mold 5 rotate on the supporting roller 3, their positions do not shift, and the driving roller 3a abuts on the supporting roller 3 to transmit its rotational force to the mold 5. The contact part 4 provided on the outer periphery of the mold 5 is shown.
The supporting roller 3 supports the mold 5 at at least four positions as shown in the drawing, and there is a driving roller 3a connected to a driving motor, and the driving roller 3a is rotated by the motor. As a result, the rotational force is transmitted to the die 5 by friction with the contact portion 4 of the die 5, and the die 5 rotates. Further, the supporting roller 3 and the driving roller 3a are shaped like a thick collar at one end of the rotary shaft, and the upper portion of the collar hits the side surface of the contact portion 4 provided in the die 5 to make a metal. The mold 5 is prevented from shifting.
【００１６】図１に金型５の第１の実施例を断面図とし
て示す。これに見られるように金型５は、径方向に分割
した状態で個別に加工された２つの金型用部材１ａ，１
ｂを組み合わせて形成してあり、外形断面は円形で内空
断面は４角形の形状である。金型用部材１の単体は、棒
状或は板状の部材を使って図のように外面・内面とも削
り加工して製作してある。又、加工された２つの金型用
部材１ａ，１ｂの結合は溶接によって行い、溶接位置は
各々の金型用部材１ａ，１ｂが合わさる部分に削り加工
で設けた溝状の溶接部６とし、回転軸方向に沿って連続
して溶接する。このように組み立てた金型５に溶湯を鋳
込んで鋳造製品１０を製作するには事前に、金型５内面
に塗型７を施す必要がある。塗型７は、鋳込む金属と金
型５との焼き付き防止と、溶湯の急冷防止と、金型５継
目への溶湯侵入防止の目的で施されるものである。FIG. 1 shows a first embodiment of the die 5 as a sectional view. As can be seen from this, the mold 5 includes two mold members 1a, 1 which are individually processed in a state of being divided in the radial direction.
The outer cross section is circular and the inner cross section is quadrangular. The single member 1 of the mold is manufactured by using a rod-shaped or plate-shaped member and cutting the outer surface and the inner surface as shown in the figure. Further, the two processed mold members 1a and 1b are joined by welding, and the welding position is a groove-like welded portion 6 provided by a cutting process at a portion where the respective mold members 1a and 1b are combined, Weld continuously along the axis of rotation. In order to manufacture the cast product 10 by casting the molten metal into the mold 5 assembled in this way, it is necessary to apply the coating mold 7 to the inner surface of the mold 5 in advance. The coating die 7 is provided for the purpose of preventing seizure between the metal to be cast and the die 5, preventing the molten metal from rapidly cooling, and preventing the molten metal from entering the joint of the die 5.
【００１７】次に図３の第２の実施例について説明す
る。この実施例は４つの金型用部材１ａ，１ｂ，１ｃ，
１ｄを組み合わせて形成してある金型５であって、断面
外側の形状は完全な円形ではなく円弧と直線の組合せか
らなる形状で内側の形状は４角形に組立してある。又、
金型用部材１相互の固定は金型５に外嵌させた外枠２で
行っている。この外枠２は金型５の全長にわたって設け
てある。又、金型用部材１相互の固定に溶接を併用して
もよい。この実施例の金型５は金型用部材１を薄く造っ
ても外枠２があるために全体として金型強度が不足しな
い利点がある。Next, a second embodiment of FIG. 3 will be described. In this embodiment, four mold members 1a, 1b, 1c,
In the mold 5 formed by combining 1d, the outer shape of the cross section is not a perfect circle, but the shape is a combination of arcs and straight lines, and the inner shape is a quadrangle. or,
The mold members 1 are fixed to each other by an outer frame 2 fitted onto a mold 5. The outer frame 2 is provided over the entire length of the mold 5. Further, welding may be used together for fixing the mold members 1 to each other. The die 5 of this embodiment has an advantage that the die strength is not insufficient as a whole because the outer frame 2 exists even if the die member 1 is made thin.
【００１８】一方、図５には第３の実施例として、金型
５の側周部を鋳ぐるんだものを示している。この実施例
の金型５は、４つの金型用部材１ａ，１ｂ，１ｃ，１ｄ
を組み合わせて形成してあり、その断面形状は、外側に
おいては直線によってなる８角形で、内側においては４
角形である。側周部の鋳ぐるみについては鋳ぐるみしよ
うとする鋳ぐるみ部８を外包する形状の砂型を製作し、
その内部に仮組した当該金型５を挿入し、前記砂型と前
記金型５との間にできる前記鋳ぐるみ部８に置注鋳造し
て鋳ぐるみ部８を形成する方法がその一例として上げら
れる。ここで説明した金型５についても第２の実施例と
同じく金型強度が向上する効果があり、また多量の熱容
量を必要とする厚肉製品を鋳造する場合に有効となる。On the other hand, FIG. 5 shows, as a third embodiment, one in which the side peripheral portion of the die 5 is cast. The mold 5 of this embodiment includes four mold members 1a, 1b, 1c, 1d.
The cross-sectional shape is an octagon consisting of straight lines on the outside and 4 on the inside.
It is a prism. As for the cast gurgling of the side peripheral portion, a sand mold having a shape enclosing the cast burring portion 8 to be casted is produced,
As an example, a method of inserting the temporarily assembled mold 5 therein and forming the cast-molded part 8 by casting in the cast-molded part 8 formed between the sand mold and the mold 5 is given. To be The mold 5 described here also has the effect of improving the mold strength as in the second embodiment, and is effective when casting a thick product requiring a large amount of heat capacity.
【００１９】図４には先の第２の実施例で説明して金型
５の外枠２を、金型５の支持ローラー３との接当部４に
用いた例を第４の実施例として示してある。図に示すよ
うに前記外枠２を、金型５回転軸方向で支持ローラー３
が当接する周部にリング状の形状で外嵌させてある。こ
の場合外枠２は、金型５の回転軸方向の長さによって前
記支持ローラー３の位置の他に金型５固定の目的を達成
でき得る適宜箇所にも設けてある。FIG. 4 shows an example in which the outer frame 2 of the mold 5 is used for the contact portion 4 with the support roller 3 of the mold 5 as described in the second embodiment, which is the fourth embodiment. It is shown as. As shown in the figure, the outer frame 2 is supported by the support roller 3 in the direction of the mold 5 rotation axis.
Is fitted to the peripheral portion with which the abuts in a ring shape. In this case, the outer frame 2 is provided not only at the position of the support roller 3 but also at an appropriate position where the purpose of fixing the mold 5 can be achieved depending on the length of the mold 5 in the rotation axis direction.
【００２０】〔別実施例〕
〈１〉 上記第１の実施例で鋳造製品１０の対向する辺
に金型５の分割面がある２分割構成の例を説明したが、
分割数及び分割位置についてはこの実施例に限るもので
はなく、図６Ａ〜６Ｅに示すように例えば、分割数につ
いては４分割でもよく、分割位置については鋳造製品１
０の角部９に金型５の分割位置があってもよい。ただ
し、図６Ｃに示す金型５のように、金型用部材１相互の
固定時に各々の位置が定まり難いような場合は、各金型
用部材１に内接する位置決め具として棒状の心材を用い
ると簡単に各金型用部材１の位置が定まり溶接部６にお
いて溶接しやすくなる。[Other Embodiments] <1> In the first embodiment, the example of the two-division structure in which the divided surfaces of the mold 5 are provided on the opposite sides of the cast product 10 has been described.
The number of divisions and the division positions are not limited to this embodiment, and as shown in FIGS. 6A to 6E, for example, the number of divisions may be four, and the division positions may be the cast product 1.
There may be a dividing position of the mold 5 at the corner 9 of 0. However, as in the mold 5 shown in FIG. 6C, when it is difficult to determine the respective positions when the mold members 1 are fixed to each other, a rod-shaped core material is used as a positioning tool inscribed in each mold member 1. As a result, the positions of the mold members 1 are easily determined, and welding at the welded portion 6 is facilitated.
【００２１】〈２〉 又、先の実施例によって断面形状
が４角形の鋳造製品１０をつくる金型５について説明し
たが、形状はこれに限るものではなく、図７Ａ〜７Ｅに
示すように例えば３角形や５角形及び他の多角形でもよ
く、さらに円弧等を組み合わせた断面形状でもよく、金
型用部材１の加工が可能な範囲においてはもっと複雑な
断面形状を造ることができる。<2> Further, the mold 5 for making the cast product 10 having a square cross section according to the above-mentioned embodiment has been described, but the shape is not limited to this, and as shown in FIGS. A triangular shape, a pentagonal shape, or another polygonal shape may be used, and a cross-sectional shape obtained by combining arcs or the like may be used, and a more complicated cross-sectional shape can be formed in a range in which the die member 1 can be processed.
【００２２】〈３〉 第１の実施例で説明したが、金型
用部材１に加工する前の原材料は、棒状や板状のもので
あるが、同じ断面形の鋳造製品１０を造る場合でも図８
Ａ〜８Ｃに示すように金型５の原材料の形状及びその加
工法は色々考えられる。又、金型５の内面形は鋳造しよ
うとする製品１０の形状で決定されるが、金型５の外面
形については、必ずしも円形に限るものではなく図に示
すように周方向に直線や別の円弧を含むものでもよい。
但し、このような場合は前記外枠２及び鋳ぐるみ等で前
記駆動ローラー３ａの回転を金型５に伝えられる接当部
４を別途設ける必要がある。<3> As described in the first embodiment, the raw material before being processed into the mold member 1 is rod-shaped or plate-shaped, but even when a cast product 10 having the same cross-sectional shape is produced. Figure 8
As shown in A to 8C, the shape of the raw material of the mold 5 and its processing method can be variously considered. Further, the inner surface shape of the die 5 is determined by the shape of the product 10 to be cast, but the outer surface shape of the die 5 is not necessarily limited to the circular shape, and may be a straight line or a different shape in the circumferential direction as shown in the figure. It may include the arc of.
However, in such a case, it is necessary to separately provide a contact portion 4 for transmitting the rotation of the driving roller 3a to the mold 5 by means of the outer frame 2 and the cast doll.
【００２３】尚、特許請求の範囲の項に図面との対照を
便利にするために符号を記すが、該記入により本発明は
添付図面の構成に限定されるものではない。It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the configuration of the accompanying drawings by the entry.
【図１】第１実施例の断面図FIG. 1 is a sectional view of a first embodiment.
【図２】金型設置状況図[Figure 2] Mold installation status diagram
【図３】第２実施例の断面図FIG. 3 is a sectional view of a second embodiment.
【図４】第４実施例の側面図FIG. 4 is a side view of the fourth embodiment.
【図５】第３実施例の断面図FIG. 5 is a sectional view of the third embodiment.
【図６】第１別実施例の断面図FIG. 6 is a sectional view of a first alternative embodiment.
【図７】第２別実施例の断面図FIG. 7 is a sectional view of a second alternative embodiment.
【図８】第３別実施例の断面図FIG. 8 is a sectional view of a third alternative embodiment.
１ 金型用部材 ２ 外枠 ３ 支持ローラー ４ 接当部 1 Mold parts 2 outer frame 3 support rollers 4 Contact Department
Claims (5)
の遠心鋳造用金型であって、回転軸周方向に分割した形
状をもつ金型用部材（１）を組み合わせて一体化してあ
る遠心鋳造用金型。1. A centrifugal casting mold having an inner surface having the same shape over the rotation axis direction, wherein the mold members (1) having a shape divided in the rotation axis circumferential direction are combined and integrated. Mold for.
体化してあるものである請求項１記載の遠心鋳造用金
型。2. The mold for centrifugal casting according to claim 1, wherein the mold member (1) is integrated by welding.
態でその回転軸周方向に外枠（２）を外嵌させて一体化
してある請求項１又は請求項２記載の遠心鋳造用金型。3. The centrifugal casting according to claim 1 or 2, wherein the mold member (1) is integrated by externally fitting an outer frame (2) in the circumferential direction of the rotating shaft in the assembled state. Mold for.
態でその回転軸周方向に鋳ぐるみして一体化してある請
求項１又は請求項２記載の遠心鋳造用金型。4. The mold for centrifugal casting according to claim 1 or 2, wherein the mold member (1) is integrally cast and formed in the circumferential direction of the rotating shaft in the assembled state.
面を、前記遠心鋳造用金型の支持ローラー（３）に対す
る接当部（４）に形成してある遠心鋳造用金型。5. A centrifugal casting mold in which the outer peripheral surface of the outer frame (2) according to claim 3 is formed in a contact portion (4) of a support roller (3) of the centrifugal casting mold. Type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3173547A JP3027624B2 (en) | 1991-07-15 | 1991-07-15 | Centrifugal casting mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3173547A JP3027624B2 (en) | 1991-07-15 | 1991-07-15 | Centrifugal casting mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0523813A true JPH0523813A (en) | 1993-02-02 |
| JP3027624B2 JP3027624B2 (en) | 2000-04-04 |
Family
ID=15962559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3173547A Expired - Fee Related JP3027624B2 (en) | 1991-07-15 | 1991-07-15 | Centrifugal casting mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3027624B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113000807A (en) * | 2021-01-27 | 2021-06-22 | 刘唐军 | Sealing device for riding wheel of centrifugal casting machine |
| CN115430819A (en) * | 2022-09-13 | 2022-12-06 | 青岛北船管业有限责任公司 | Equal-wall-thickness centrifugal casting device for improving inner wall smoothness of marine pipe fitting |
-
1991
- 1991-07-15 JP JP3173547A patent/JP3027624B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113000807A (en) * | 2021-01-27 | 2021-06-22 | 刘唐军 | Sealing device for riding wheel of centrifugal casting machine |
| CN115430819A (en) * | 2022-09-13 | 2022-12-06 | 青岛北船管业有限责任公司 | Equal-wall-thickness centrifugal casting device for improving inner wall smoothness of marine pipe fitting |
| CN115430819B (en) * | 2022-09-13 | 2023-09-26 | 青岛北船管业有限责任公司 | Equal wall thickness centrifugal casting device for improving smoothness of inner wall of marine pipe fitting |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3027624B2 (en) | 2000-04-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |