JPH04210846A - Casting product and frame for electric machinery and apparatus - Google Patents
Casting product and frame for electric machinery and apparatusInfo
- Publication number
- JPH04210846A JPH04210846A JP2410496A JP41049690A JPH04210846A JP H04210846 A JPH04210846 A JP H04210846A JP 2410496 A JP2410496 A JP 2410496A JP 41049690 A JP41049690 A JP 41049690A JP H04210846 A JPH04210846 A JP H04210846A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- frame
- casting
- opening
- vanishing model
- 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
- 238000005266 casting Methods 0.000 title claims abstract description 25
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 29
- 238000009423 ventilation Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 abstract 2
- 239000004576 sand Substances 0.000 description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000001816 cooling Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- 241000587161 Gomphocarpus Species 0.000 description 1
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Casting Devices For Molds (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Description
［０００１１［発明の目的］ ［０００２］ [00011 [Object of the invention] [0002]
【産業上の利用分野】本発明は、消失模型に溶融金属を
鋳込んで成形される鋳造品及び電気機器用枠に関する。
［０００３］BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cast product formed by pouring molten metal into a disappearing model, and a frame for electrical equipment. [0003]
【従来の技術】＠気根器用枠として例えば回転電機の固
定子枠は、はぼ円筒状をなしており、その壁部における
軸方向中央部に通風用の開口部が設けられている。この
開口部を通して、巻線を冷却した冷却風を外部へ放出す
るようになっている。上記固定子枠は、従来より、鋳造
により製造されている。以下、固定子枠の鋳造方法の一
例を図８ないし図１２を参照して説明する。
［０００４］まず、図８に示す外側砂型１、図９に示す
内側砂型２及び図１０に示す開口部用の中子砂型３を製
作する。この場合、外側砂型１は、図１１に示すように
、矩形容器状の金型４内に固定子枠の外径寸法とほぼ等
しい外径寸法を有する円筒状の内型５を収容して固定し
た状態で、両型４，５間に砂を入れて突き固めて作られ
る。また、内側砂型２及び中子砂型３は、それぞれ二つ
割りの金型（図示しない）のキャビティ内に砂を入れて
突き固めて作られる。そして、内側砂型２の外周部に形
成された凹部２ａに中子砂型３に突設された凸部３ａを
嵌合して内側砂型２に中子砂型３を取付けたものを、外
側砂型１内に収容する型合わせを行う。この後、図１２
に示すように、各砂型１． ２． ３によって形成され
たキャビティ６内に溶融金属の湯を注入して鋳込みを行
う。これにより、固定子枠が鋳造される。鋳造された固
定子枠の開口部には、安全のために網等からなるガード
部材をボルト等によって固定する。
［０００５］BACKGROUND OF THE INVENTION A stator frame of a rotating electric machine, for example, is a frame for an air root device, and has a substantially cylindrical shape, and an opening for ventilation is provided in the axial center of the wall. Through this opening, cooling air that has cooled the windings is discharged to the outside. The stator frame has conventionally been manufactured by casting. An example of a method for casting a stator frame will be described below with reference to FIGS. 8 to 12. [0004] First, an outer sand mold 1 shown in FIG. 8, an inner sand mold 2 shown in FIG. 9, and a core sand mold 3 for an opening shown in FIG. 10 are manufactured. In this case, as shown in FIG. 11, the outer sand mold 1 is fixed by housing a cylindrical inner mold 5 having an outer diameter approximately equal to the outer diameter of the stator frame in a rectangular container-shaped mold 4. In this state, sand is poured between molds 4 and 5 and compacted. The inner sand mold 2 and the core sand mold 3 are each made by filling the cavities of a two-piece mold (not shown) with sand and compacting the sand. Then, the convex portion 3a protruding from the core sand mold 3 is fitted into the concave portion 2a formed on the outer periphery of the inner sand mold 2, and the core sand mold 3 is attached to the inner sand mold 2. Perform mold matching to accommodate the After this, Figure 12
As shown in each sand mold 1. 2. Casting is performed by injecting molten metal into the cavity 6 formed by 3. As a result, the stator frame is cast. For safety, a guard member made of a net or the like is fixed to the opening of the cast stator frame with bolts or the like. [0005]
【発明が解決しようとする課題】しかしながら、上記従
来構成では、砂型２に砂型３を取付ける場合、内側砂型
２の凹部２ａに中子砂型３の凸部３ａを嵌合させるだけ
であるので、中子砂型３即ち開口部の位置決め精度が悪
くなるという欠点があった。これを解消するために、外
側砂型に凹部を設けると共に、中子砂型に外側砂型の凹
部に嵌合する凸部を設け、中子砂型を外側砂型及び内側
砂型によって位置決めする構成が考えられる。しかし、
この構成では、外側砂型を２分割しなければならず、砂
型の分割数が多くなるという問題点が生ずる。
［０００６］また、砂型１． ２． ３を型合わせする
構成であるので、型と型との突き合わせ部分に比較的大
きな隙間ができてしまい、この隙間に湯が流れ込んでか
なり大きな鋳ばつが生じ、この鋳ばりを取り除く作業が
かなり大変であるという欠点があった。
［０００７］これらの欠点を解消する構成として、消失
模型を使って鋳造を行う方法が、従来より考えられてい
る。この方法では、金型を使用して発泡ビーズにより消
失模型を製作し、この消失模型を鋳枠内に収容した状態
で鋳枠内に砂を入れて固め、この後、上記消失模型に湯
を注入するようにしている。これにより、高温の湯によ
って消失模型が溶けて消失し、この消失模型の消失によ
り形成されたキャビティ内に湯が充填されることによっ
て鋳造が行われる。この構成では、金型を使用して消失
模型を製作するので、固定子枠の開口部の位置決め精度
を十分高くできる。また、金型を型合わせするので、型
と型との突き合わせ部分の隙間が小さくなり、消失模型
に生ずるばつが小さくなり、その結果、鋳造品に生ずる
鋳ばつが小さくなる。
［０００８］Ｌかし、上記した消失模型を使って固定子
枠を鋳造した場合においても、ガード部材が別体である
ため、鋳造後に固定子枠の開口部にガード部材をボルト
等によって固定する作業を行わなければならず、部品点
数が多くて組立が面倒であるという欠点があった。
［０００９］そこで、本発明の目的は、位置決め精度を
高くできると共に、鋳ばりを小さくてき、しかも、部品
点数を削減し得て組立作業性を向上できる鋳造品及び電
気機器用枠を提供するにある。
［００１０３
［発明の構成］
［００１１１However, in the conventional structure described above, when attaching the sand mold 3 to the sand mold 2, the protrusion 3a of the core sand mold 3 is simply fitted into the recess 2a of the inner sand mold 2. There was a drawback that the positioning accuracy of the child sand mold 3, that is, the opening, was poor. In order to solve this problem, a configuration can be considered in which the outer sand mold is provided with a recess, and the core sand mold is provided with a protrusion that fits into the recess of the outer sand mold, and the core sand mold is positioned by the outer sand mold and the inner sand mold. but,
With this configuration, the outer sand mold must be divided into two parts, resulting in a problem that the number of parts of the sand mold increases. [0006] Also, sand mold 1. 2. 3, the molds are matched, so a relatively large gap is created where the molds meet, and hot water flows into this gap, creating a fairly large casting flash, which is quite difficult to remove. It had the disadvantage of being. [0007] As a configuration for solving these drawbacks, a method of casting using a vanishing model has been considered. In this method, a mold is used to make a vanishing model with foam beads, this vanishing model is housed in a casting flask, sand is poured into the flask to harden it, and then hot water is poured into the vanishing model. I'm trying to inject it. As a result, the disappearing model melts and disappears due to the high temperature hot water, and casting is performed by filling the cavity formed by the disappearance of the disappearing model with hot water. In this configuration, since the disappearing model is manufactured using a mold, the positioning accuracy of the opening of the stator frame can be sufficiently increased. Furthermore, since the molds are matched, the gap between the butted parts of the molds becomes smaller, and the defects that occur in the disappearing model are reduced, and as a result, the defects that occur in the cast product are reduced. [0008] L However, even when the stator frame is cast using the above-mentioned vanishing model, the guard member is a separate piece, so the guard member is fixed to the opening of the stator frame with bolts or the like after casting. The disadvantage is that it requires a lot of work, has a large number of parts, and is troublesome to assemble. [0009] Therefore, an object of the present invention is to provide a cast product and a frame for electrical equipment that can improve positioning accuracy, reduce casting flash, reduce the number of parts, and improve assembly workability. be. [00103 [Configuration of the invention] [00111
【課題を解決するための手段］本発明の鋳造品は、消失
模型に溶融金属を鋳込んで成形されるものにおいて、前
記消失模型に非消失材製の部品をその一部が突出するよ
うに固定し、前記部品を一体に鋳込んで成るところに特
徴を有する。
［００１２］本発明の電気機器用枠は、消失模型に溶融
金属を鋳込んで成形され通風用の開口部を有するものに
おいて、前記消失模型のうち前記開口部に対応する部位
に非消失材製の線材又は網等のガード部材を一体に鋳込
んで成るところに特徴を有する。
［００１３］
【作用】上記第１の発明によれば、鋳造品は、消失模型
に溶融金属を鋳込んで成形されるので、位置決め精度が
高くなると共に、鋳ばつが小さくなる。そして、消失模
型に非消失材製の部品をその一部が突出するように固定
することにより、鋳造品に部品を一体に鋳込むように構
成したから、部品点数が少なくなると共に、組立工数も
少なくなる。
［００１４］また、第２の発明によれば、電気機器用枠
は、消失模型に溶融金属を鋳込んで成形されるので、位
置決め精度が高くなると共に、鋳ばつが小さくなる。そ
して、消失模型のうち開口部に対応する部位に非消失材
製のガード部材を一体に鋳込むように構成したから、部
品点数が少なくなると共に、組立工数も少なくなる。
［００１５］[Means for Solving the Problems] The cast product of the present invention is formed by casting molten metal into a vanishing model, in which a part made of a non-disappearing material is inserted into the vanishing model so that a part thereof protrudes. It is characterized in that it is fixed and the parts are cast together. [0012] The frame for electrical equipment of the present invention is formed by casting molten metal into a vanishing model and having an opening for ventilation, wherein a part of the vanishing model corresponding to the opening is made of non-disappearing material. The feature is that a guard member such as a wire rod or a net is integrally cast. [0013] According to the first aspect of the invention, the cast product is formed by pouring molten metal into the vanishable model, so that the positioning accuracy is increased and the casting defect is reduced. By fixing parts made of non-vanishable materials to the vanishing model so that a part of them protrudes, the parts can be integrally cast into the cast product, which reduces the number of parts and reduces assembly man-hours. It becomes less. [0014] Furthermore, according to the second aspect of the invention, the frame for electrical equipment is formed by casting molten metal into a vanishing model, so that positioning accuracy is increased and casting defects are reduced. Since the guard member made of a non-disappearing material is integrally cast in a portion of the vanishing model corresponding to the opening, the number of parts and the number of assembly steps are reduced. [0015]
【実施例】以下、本発明を回転電機の固定子枠に適用し
た一実施例について図１ないし図７を参照しながら説明
する。
［００１６］まず、回転電機の全体構成を示す図１にお
いて、全体としてほぼ円筒状をなす固定子枠１１の内周
部には、固定子１２が取付けられている。固定子１２に
は、巻線１３が巻装されている。固定子枠１１の周壁部
のうち軸方向の中間部分には、通風用の開、口部１１ａ
が形成されており、この開口部１１ａにガード部材１４
が設けられている。ガード部材１４は、線材である複数
の金属棒１５から構成されている。複数の金属棒１５は
、開口部１１ａの周縁部に埋設されている。また、固定
子枠１１の両端部には、軸受ブラケット１６及び１７が
嵌合されている。これら軸受ブラケット１６及び１７は
、ポルト１８により固定子枠１１に締め付は固定されて
いる。軸受ブラケット１６及び１７と、固定子枠１１の
両端部との各間には、導風板１９が挟まれて固定されて
いる。
［００１７］一方、回転子２０の回転軸２１は、軸受ブ
ラケット１６及び１７の各中心部に設けられた軸受２２
及び２３に回転可能に支承されている。回転子２０の両
端部には、冷却ファン２４が一体に設けられている。冷
却ファン２４の端部は、上記導風板１９の先端部とわず
かの隙間を介して対向するようになっている。また、軸
受ブラケット１６及び１７には、それぞれ吸気口２５が
設けられている。
［００１８］上記構成では、回転子２０が回転されると
、冷却ファン２４の送風作用により外気が吸気口２５か
ら吸引される。吸引された空気は、導風板１９に案内さ
れて巻線１３を冷却した後、固定子枠１１の開口部１１
ａを通って外部へ排出される。
［００１９］次に、上記した固定子枠１１を鋳造する場
合について、図２ないし図６を参照して説明する。まず
、鋳造に先立って固定子枠１１の消失模型を作る。この
場合、外側金型として、この外側金型を軸心に沿って２
分割して成る一方の分割外側金型２６ （図２参照）及
び他方の分割外側金型（図示しない）を用いる。分割外
側金型２６には、固定子枠１１を軸心に沿って２分割し
た形状の四部２６ａが形成されている。このような外側
金型に対して、内側金型２７は、図３に示すように、は
ぼ円柱状をなしており、外周部に開口部１１ａを成形す
るための中間金型２８（図４参照）取付用の凹部２７ａ
が形成されている。尚、凹部２７ａは開口部１１ａの個
数と同じ個数だけ形成されている。
［００２０］ここで、中間金型２８は、２例の分割中間
金型２９ （図５参照）から構成されている。分割中間
金型２９のうち相互の型合わせ面２９ａには、複数の溝
２９ｂが形成されており、この溝２９ｂ内に前述したガ
ード部材１４の金属棒１５が収容されて固定される（図
４参照）。金属棒１５を固定した中間金型２８は、図６
に示すように、内側金型２７の凹部２７ａ内に嵌合され
て取付固定される。中間金型２８を固定した内側金型２
７は、分割外側金型２６を型合わせして成る外側金型の
凹部２６ａ内に収容されて固定される。そして、外側金
型及び内側金型２７により形成されたキャビティ内に発
泡ビーズを注入することにより、固定子枠１１の消失模
型が成形される。この消失模型における通風用の開口部
には、金属棒１５が張り渡されており、この金属棒１５
は一部が消失模型から突出された状態で消失模型に埋設
されている。
［００２１］この後、消失模型を金型から取出して整形
し、整形した消失模型の表面に０離れを良くするための
塗型を施す。このような消失模型を鋳造用の鋳枠である
フラスコ（図示しない）内に収容し、砂込めを行う。砂
込めは、フラスコを振動させながら行う。この砂込めに
より上記金属棒１５の一部が性向に埋まって固定される
。そして、砂込めが完了した後、鋳込みを行う。この場
合、溶融金属の湯を性向に設けられた湯道を通して消失
模型に注入する。注入された高温の湯により消失模型が
溶けて消失し、消失した後の空間であるキャピテイ内に
湯が充填され、その後、湯′は冷却されて硬化する。
尚、鋳込み時において、金属棒１５は、一部が性向に埋
まって固定されているので、湯の流れにより押されて動
くことはほとんどない。また、金属棒１５は、湯の温度
では溶けない別種の金属により構成されている。
［００２２］このような構成の本実施例によれば、固定
子枠１１を、消失模型に湯を鋳込んで成形したので、消
失模型を作るときに金型２６，２７．２８を用いること
ができ、その結果、固定子枠１１における開口部１１ａ
の位置決め精度を高くできると共に、鋳ばつを小さくし
得る。そして、消失模型のうち開口部１１ａに対応する
部位に非消失材製のガード部材１４を一体に鋳込むよう
に構成したから、部品点数を少なくてき、組立工数を少
なくできる。
［００２３］ところで、従来構成においては、固定子枠
の開口部に取付けるガード部材としてプラスチック類の
多孔板を用いていたので、ガード部材の強度が弱いとい
う欠点があった。これに対して、上記実施例では、ガー
ド部材１４として複数の金属棒１５を用いたので、ガー
ド部材１４の強度が大きくなる。また、複数の金属棒１
５を固定子枠１１に埋設するように構成したので、固定
子枠１１の強度も大きくなり、従来の回転電機の輸送中
に発生するガイド部材の脱落や破損及び回転電機設置後
の破損等がなくなる。更に、上記実施例では、開口部１
１ａに金属棒１５が配置されているだけであるから、開
口部１１ａを通過する空気の通過抵抗は、プラスチック
製の多孔板が配置される従来構成の空気の通過抵抗に比
べて小さくなる。このため、冷却空気の排気効率が良く
なり、ひいては固定子１２の冷却性能が高くなる。
［００２４］また、上記実施例では、消失模型の表面に
塗型を施すようにしたので、鋳造された固定子枠１１と
砂との間に塗型が存在し、固定子枠１１から砂を取り除
き易くなり、後の行程におけるショツトブラスト等の処
理を容易に実行できる。
［００２５］尚、上記実施例では、ガード部材１４とし
て複数の金属棒１５を用いる構成としたが、これに限ら
れるものではなく、図７に示すように、複数の金属棒３
０を連結棒３１で連結してほぼ網状に構成したガード部
材３２を用いても良い。また、ガード部材として、金属
棒１５を用いる代わりに、釘、鋼管材、線材（ピアノ線
）、網、多孔板、多数のスリットが形成された板等を用
いても良い。金属棒１５の形状としては、丸、三角、四
角形状のものや、棒状で両端にフランジ付のもの（釘の
頭が両端に付いているもの）等を用いる。更に、ガード
部材を高温の湯で溶けない金属製（例えば機械構造用炭
素鋼、ニッケル合金等）としたが、セラミック製として
も良く、要は、高温の湯で溶けない消失部材製であれば
良い。
［００２６］そして、鋳込金属としては、ねずみ鋳鉄品
、球状黒鉛鋳鉄品、ステンレス鋼鋳鋼品、アルミニウム
等を用いる。
［００２７］DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a stator frame of a rotating electrical machine will be described below with reference to FIGS. 1 to 7. [0016] First, in FIG. 1 showing the overall configuration of a rotating electric machine, a stator 12 is attached to the inner circumferential portion of a stator frame 11 that is generally cylindrical as a whole. A winding 13 is wound around the stator 12 . In the axially intermediate portion of the peripheral wall of the stator frame 11, there is an opening 11a for ventilation.
A guard member 14 is formed in this opening 11a.
is provided. The guard member 14 is composed of a plurality of metal rods 15 that are wire rods. The plurality of metal rods 15 are embedded in the periphery of the opening 11a. Further, bearing brackets 16 and 17 are fitted to both ends of the stator frame 11. These bearing brackets 16 and 17 are fastened to the stator frame 11 by ports 18. A baffle plate 19 is sandwiched and fixed between the bearing brackets 16 and 17 and both ends of the stator frame 11. [0017] On the other hand, the rotating shaft 21 of the rotor 20 is connected to a bearing 22 provided at the center of each of the bearing brackets 16 and 17.
and 23 are rotatably supported. Cooling fans 24 are integrally provided at both ends of the rotor 20. The end of the cooling fan 24 faces the tip of the baffle plate 19 with a slight gap therebetween. Further, each of the bearing brackets 16 and 17 is provided with an intake port 25. [0018] In the above configuration, when the rotor 20 is rotated, outside air is sucked through the intake port 25 by the blowing action of the cooling fan 24. The sucked air is guided by the baffle plate 19 to cool the winding 13, and then passes through the opening 11 of the stator frame 11.
It is discharged to the outside through a. [0019] Next, the case of casting the stator frame 11 described above will be described with reference to FIGS. 2 to 6. First, prior to casting, a disappearing model of the stator frame 11 is made. In this case, as the outer mold, this outer mold is
One divided outer mold 26 (see FIG. 2) and the other divided outer mold (not shown) are used. The divided outer mold 26 has four parts 26a formed by dividing the stator frame 11 into two along the axis. In contrast to such an outer mold, the inner mold 27 has a substantially cylindrical shape as shown in FIG. Reference) Recess 27a for mounting
is formed. Note that the number of recesses 27a is the same as the number of openings 11a. [0020] Here, the intermediate mold 28 is composed of two examples of split intermediate molds 29 (see FIG. 5). A plurality of grooves 29b are formed in the mutual mold matching surfaces 29a of the divided intermediate molds 29, and the metal rod 15 of the guard member 14 described above is accommodated and fixed in the grooves 29b (FIG. 4). reference). The intermediate mold 28 to which the metal rod 15 is fixed is shown in FIG.
As shown in FIG. 2, it is fitted and fixed in the recess 27a of the inner mold 27. Inner mold 2 with intermediate mold 28 fixed
7 is housed and fixed in a recess 26a of an outer mold formed by matching the divided outer molds 26. Then, by injecting foam beads into the cavity formed by the outer mold and the inner mold 27, a disappearing model of the stator frame 11 is molded. A metal rod 15 is stretched across the ventilation opening in this disappearing model, and this metal rod 15
is buried in the vanishing model with a part protruding from the vanishing model. [0021] Thereafter, the vanishing model is taken out from the mold and shaped, and a coating is applied to the surface of the shaped vanishing model to improve zero separation. Such a disappearing model is placed in a flask (not shown) which is a flask for casting, and filled with sand. Fill in the sand while vibrating the flask. By this sand filling, a part of the metal rod 15 is buried and fixed. After sand filling is completed, casting is performed. In this case, molten metal water is injected into the vanishing model through a runner provided in a direction. The injected high-temperature hot water melts the vanishing model and causes it to disappear. Hot water fills the cavity, which is the space after the vanishing model disappears, and then the hot water is cooled and hardened. Incidentally, during casting, the metal rod 15 is partially buried and fixed, so it is hardly moved by being pushed by the flow of hot water. Further, the metal rod 15 is made of a different type of metal that does not melt at the temperature of hot water. [0022] According to this embodiment having such a configuration, the stator frame 11 is molded by pouring hot water into the vanishing model, so the molds 26, 27, and 28 can be used when making the vanishing model. As a result, the opening 11a in the stator frame 11
It is possible to increase the positioning accuracy and reduce the amount of casting defects. Since the guard member 14 made of a non-vanishing material is integrally cast in the part of the vanishing model corresponding to the opening 11a, the number of parts can be reduced and the number of assembly steps can be reduced. [0023]In the conventional configuration, a plastic perforated plate was used as a guard member attached to the opening of the stator frame, so there was a drawback that the strength of the guard member was weak. On the other hand, in the embodiment described above, since the plurality of metal rods 15 are used as the guard member 14, the strength of the guard member 14 is increased. Also, multiple metal rods 1
5 is configured to be buried in the stator frame 11, the strength of the stator frame 11 is increased, and the guide members are prevented from falling off or being damaged during transportation of the conventional rotating electrical machine, and damage after the rotating electrical machine is installed. It disappears. Furthermore, in the above embodiment, the opening 1
Since only the metal rod 15 is disposed at 1a, the resistance to air passing through the opening 11a is smaller than the resistance to air passing through the conventional configuration in which a perforated plastic plate is disposed. Therefore, the efficiency of exhausting the cooling air is improved, and the cooling performance of the stator 12 is thereby improved. [0024] Furthermore, in the above embodiment, since the coating mold is applied to the surface of the disappearing model, the coating mold exists between the cast stator frame 11 and the sand, and the sand is removed from the stator frame 11. This makes it easier to remove, making it easier to carry out treatments such as shot blasting in subsequent steps. [0025]Although in the above embodiment, a plurality of metal rods 15 are used as the guard member 14, the structure is not limited to this, and as shown in FIG.
A guard member 32 may be used in which the guard members 32 are connected by connecting rods 31 to form a substantially net shape. Further, instead of using the metal rod 15 as the guard member, a nail, a steel pipe material, a wire rod (piano wire), a net, a perforated plate, a plate with many slits, etc. may be used. The shape of the metal rod 15 may be round, triangular, square, or rod-shaped with flanges at both ends (nail heads attached at both ends). Furthermore, although the guard member is made of a metal that does not melt in hot water (for example, carbon steel for mechanical structures, nickel alloy, etc.), it may also be made of ceramic, as long as it is made of a vanishable material that does not melt in hot water. good. [0026] As the cast metal, gray cast iron, spheroidal graphite cast iron, stainless steel cast iron, aluminum, etc. are used. [0027]
【発明の効果】本発明は、以上説明した通りであるので
、次の効果を得ることができる。
［００２８］請求項１の鋳造品においては、消失模型に
非消失材製の部品をその一部が突出するように固定し、
部品を一体に鋳込むように構成したので、位置決め精度
を高くできると共に、鋳ばりを小さくし得、しかも、部
品点数を少なくでき且つ組立工数を少なくできる。
［００２９］請求項２の電気機器用枠においては、消失
模型のうち開口部に対応する部位に非消失材製の線材又
は網等のガード部材を一体に鋳込むように構成としたの
で、電気機器用枠における開口部の位置決め精度を高く
できると共に、鋳ばりを小さくし得、しかも、部品点数
を少なくでき且つ組立工数を少なくできる。[Effects of the Invention] Since the present invention is as explained above, the following effects can be obtained. [0028] In the cast product of claim 1, a part made of a non-vanishing material is fixed to the vanishing model so that a part thereof protrudes,
Since the parts are integrally cast, the positioning accuracy can be increased, flashes can be reduced, and the number of parts and assembly steps can be reduced. [0029] In the frame for electrical equipment according to claim 2, a guard member such as a wire or a net made of a non-disappearing material is integrally cast in a portion of the vanishing model corresponding to the opening, so that electrical The positioning accuracy of the opening in the device frame can be increased, flashes can be reduced, the number of parts can be reduced, and the number of assembly steps can be reduced.
【図１】本発明の一実施例を示す回転電機の破断側面図
[Fig. 1] A cutaway side view of a rotating electrical machine showing an embodiment of the present invention.
【図２】分割外側金型の斜視図[Figure 2] Perspective view of split outer mold
【図３】内側金型の斜視図[Figure 3] Perspective view of inner mold
【図４】中間金型の斜視図[Figure 4] Perspective view of intermediate mold
【図５】分割中間金型の斜視図[Figure 5] Perspective view of split intermediate mold
【図６】内側金型に中間金型を取付けた状態の斜視図[Figure 6] Perspective view of the intermediate mold attached to the inner mold
【
図７】本発明の変形例を示すガード部材の斜視図[
FIG. 7 is a perspective view of a guard member showing a modification of the present invention
【図８
】従来構成を示す外側砂型の斜視図[Figure 8
] Perspective view of the outer sand mold showing the conventional configuration
【図９】内側砂型の
斜視図[Figure 9] Perspective view of inner sand mold
【図１０１中子砂型の斜視図 【図１１】外側砂型を作るための金型の斜視図[Figure 101 Perspective view of core sand mold [Figure 11] Perspective view of the mold for making the outer sand mold
【図１２
】型合わせした砂型の部分横断面図[Figure 12
] Partial cross-sectional view of the matched sand molds
１１は固定子枠（鋳造品、電気機器用枠）、ｌｌａは開
口部、１４．３２はガード部材、１５は金属棒、２６は
分割外側金型、２７は内側金型、２８は中間金型を示す
。11 is a stator frame (cast product, frame for electrical equipment), lla is an opening, 14.32 is a guard member, 15 is a metal rod, 26 is a divided outer mold, 27 is an inner mold, 28 is an intermediate mold shows.
Claims (2)
鋳造品において、前記消失模型に非消失材製の部品をそ
の一部が突出するように固定し、前記部品を一体に鋳込
んで成る鋳造品。1. A cast product formed by pouring molten metal into a vanishing model, in which a part made of a non-disappearing material is fixed to the vanishing model so that a part of the part protrudes, and the parts are integrally cast. A cast product made of.
風用の開口部を有する電気機器用枠において、前記消失
模型のうち前記開口部に対応する部位に非消失材製の線
材又は網等のガード部材を一体に鋳込んで成る電気機器
用枠。2. A frame for electrical equipment that is formed by casting molten metal into a vanishing model and having an opening for ventilation, wherein a wire rod or a mesh made of a non-disappearing material is provided in a portion of the vanishing model that corresponds to the opening. A frame for electrical equipment made by integrally casting guard members such as.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2410496A JPH04210846A (en) | 1990-12-12 | 1990-12-12 | Casting product and frame for electric machinery and apparatus |
| TW080109616A TW199119B (en) | 1990-12-12 | 1991-12-07 | |
| KR1019910022736A KR950010604B1 (en) | 1990-12-12 | 1991-12-12 | Article device and method for casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2410496A JPH04210846A (en) | 1990-12-12 | 1990-12-12 | Casting product and frame for electric machinery and apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04210846A true JPH04210846A (en) | 1992-07-31 |
Family
ID=18519656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2410496A Pending JPH04210846A (en) | 1990-12-12 | 1990-12-12 | Casting product and frame for electric machinery and apparatus |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH04210846A (en) |
| KR (1) | KR950010604B1 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63295038A (en) * | 1987-02-18 | 1988-12-01 | Kubota Ltd | Expendable pattern for casting by metallic mold provided with fluid supplying passage |
-
1990
- 1990-12-12 JP JP2410496A patent/JPH04210846A/en active Pending
-
1991
- 1991-12-12 KR KR1019910022736A patent/KR950010604B1/en not_active IP Right Cessation
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63295038A (en) * | 1987-02-18 | 1988-12-01 | Kubota Ltd | Expendable pattern for casting by metallic mold provided with fluid supplying passage |
Also Published As
| Publication number | Publication date |
|---|---|
| KR950010604B1 (en) | 1995-09-20 |
| KR920011615A (en) | 1992-07-24 |
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