JPH0151678B2 - - Google Patents
Info
- Publication number
- JPH0151678B2 JPH0151678B2 JP60154798A JP15479885A JPH0151678B2 JP H0151678 B2 JPH0151678 B2 JP H0151678B2 JP 60154798 A JP60154798 A JP 60154798A JP 15479885 A JP15479885 A JP 15479885A JP H0151678 B2 JPH0151678 B2 JP H0151678B2
- Authority
- JP
- Japan
- Prior art keywords
- shroud
- blade
- disk
- holes
- positioning pins
- 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
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は飛行機断面形状のブレイドを有する送
風機羽根車の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for manufacturing a blower impeller having blades in the shape of an airplane cross-section.
（従来の技術）
従来に於ける斯有るブレイドの製造について述
べると、アルミ鋳造で閉鎖部なしの中空鋳造とな
し、デイスクにケガキを入れるか、専用治具によ
り位置決めをして溶接を行い、その後においてシ
ユラウドを溶接するのである。(Prior art) Regarding the conventional manufacturing of such a blade, it is made by hollow casting without a closing part using aluminum casting, and the disk is marked or positioned using a special jig and then welded. The shroud is then welded.
（発明が解決しようとする課題）
上記の従来に於いてブレイドをシユラウドに位
置決めするさいケガキ又は治具を使つて合せなが
ら溶接すると言う煩わしさがあり、又シユラウド
側も開放された中空のブレイドのため全面溶接を
しないと中空と外側とにより運転中に異音（笛吹
き音）が発生すること、及びブレイドの傾斜によ
りシユラウドの位置決めが困難であるばかりでな
く、鋳造表面の粗さが大きく表面仕上げに労力を
要する欠点があり、更に鋳造で軽量に作らなけれ
ばならないことからアルミ表に限定され、温度、
摩耗、腐触に対して使用範囲が自と制限されるも
のとなる問題がある。(Problems to be Solved by the Invention) In the above-mentioned conventional method, it is troublesome to use a scribe or jig to position the blade on the shroud and weld it together while welding. Therefore, if the entire surface is not welded, an abnormal noise (whistling sound) will be generated between the hollow and the outside during operation, and the positioning of the shroud will be difficult due to the slope of the blade.In addition, the roughness of the casting surface will make it difficult to position the shroud. It has the disadvantage of requiring labor to finish, and it is also limited to aluminum tables because it must be made lightweight by casting.
There is a problem that the range of use is limited due to wear and corrosion.
一方、ブレイドを鋼板製となしプレス加工して
製作する方法もあるが、この方法はプレス工程が
複雑で成形し難く最終工程で精度維持のために匡
正をしなければならない。又ブレイドをデイスク
及びシユラウドに溶接する場合、全て鋼板製であ
るために溶接時の歪により全面密着が行われ難い
等の欠点がある。 On the other hand, there is a method in which the blade is made of steel plate and manufactured by pressing, but this method involves a complicated pressing process, making it difficult to form, and requires tightening in the final process to maintain accuracy. Furthermore, when welding the blade to the disk and shroud, since they are all made of steel plates, there are drawbacks such as difficulty in achieving full-surface adhesion due to distortion during welding.
（課題を解決するための手段）
本発明は斯有る欠点を除去し、安価でしかも特
性、品質の安定した飛行機翼断面形状のブレイド
を有する送風機羽根車を製造せんとするものであ
つて、その特徴とするところは予め片端を閉鎖し
他端が開放された中空の飛行機翼断面形状をなす
と共に、閉鎖面側の凡そ中央部分及び開放面側の
前後端部分に夫々れ位置決めピンの取付けられた
ブレイドをロストワツクス法で一体製造し、他方
シユラウド及びデイスクには上記各位置決めピン
の係合嵌入される透孔を穿設し、これら透孔を介
しシユラウドとデイスク間にブレイドを嵌合止着
させて製造する送風機羽根車の製造方法である。(Means for Solving the Problems) The present invention aims to eliminate these drawbacks and manufacture a blower impeller having blades in the cross-sectional shape of an airplane wing, which is inexpensive and has stable characteristics and quality. The main feature is that it has a hollow airplane wing cross-sectional shape with one end closed and the other open, and positioning pins are installed at approximately the center of the closed side and at the front and rear ends of the open side. The blade is integrally manufactured by the lost wax method, and the shroud and disk are provided with through holes into which the above-mentioned positioning pins are fitted, and the blade is fitted and fixed between the shroud and the disk through these through holes. This is a method for manufacturing a blower impeller.
（実施例）
以下、本発明方法実施の一例を図面にもとづい
て説明する。(Example) Hereinafter, an example of implementing the method of the present invention will be described based on the drawings.
第１図は分解したさいの各部品斜視図である。
１はブレイドにあつてロストワツクス法で鋳造さ
れるのであり、そのさい片端面１ａは閉鎖し、他
の端面１ｂは開放状態をなす中空で断面が飛行機
翼形状となされる。 FIG. 1 is a perspective view of each part when disassembled.
The blade 1 is cast by the lost wax method, and is hollow with one end face 1a closed and the other end face 1b open, with a cross section shaped like an airplane wing.
２は閉鎖面１ａの中央部に突出形成した位置決
めピンであり、また３ａ及び３ｂは開放端面１ｂ
の前後端縁部に設けた位置決めピンであり、これ
らは次述するシユラウド及びデイスクに穿設する
透孔と係合嵌入させて便利に組立が行われるよう
にするためのものである。 2 is a positioning pin protruding from the center of the closed surface 1a, and 3a and 3b are the positioning pins formed on the open end surface 1b.
These are positioning pins provided on the front and rear edges of the shroud and the disk, and these pins are inserted into and engaged with through holes drilled in the shroud and disk to facilitate convenient assembly.
４はシユラウドであつて従来法による製造と変
わりはないが、板面上の中央部分に於ける等間隔
位置には多数の透孔５が穿設されてなり、これは
前記ブレイド１の位置決めピン２が嵌入係合され
るためのものである。 Reference numeral 4 denotes a shroud, which is the same as manufactured by the conventional method, but has a large number of through holes 5 bored at equal intervals in the center of the plate surface, which are connected to the positioning pins of the blade 1. 2 is to be fitted and engaged.
６及び７はデイスク及びボスであつて、共に従
来法による製造と変わりがないが、板面上の外周
縁側ｍと内周縁側ｎ、即ちボス７と近接する側に
は等間隔で多数の透孔８a′，８b′，８a2，８b2，
８a3，８b3……を夫々れ対となして穿設してあ
り、これら各透孔は前記ブレイド１の開放端面１
ｂ側に設けた突起３ａ，３ｂが夫々れ嵌入されて
係合止着が行われるようになされるのである。 6 and 7 are a disk and a boss, both of which are manufactured by the conventional method, but there are a number of transparent holes at equal intervals on the outer peripheral edge side m and inner peripheral edge side n of the plate surface, that is, on the side adjacent to the boss 7. Holes 8a', 8b', 8a 2 , 8b 2 ,
8a 3 , 8b 3 .
The protrusions 3a and 3b provided on the b side are respectively fitted and engaged and fixed.
第２図は組立状態図であつて、前記ブイイド１
の取付けには当初ブレイドの開放面１ｂ側の位置
決めピン３ａ，３ｂをデイスク６に穿設した透孔
の１対（図示例では８a′，８b′に係合させるもの
を示す）に順次供合嵌入させ、且つそのさい係合
面Ｓを溶接９するようになすのである。しかし
て、これが終了すすとブレイド１の閉鎖面１ａ側
に対しシユラウド４をブレイド１の位置決めピン
２とシユラウド４の透孔５と係合嵌着させると共
に、ブレイド１前後端をシユラウド４にステツプ
溶接するようになす。第３図は斯くして組立てら
れた羽根車の縦断面図である。なお、図面で１０
はデイスク５とボス６とを連結するリベツトであ
る。 FIG. 2 is an assembled state diagram, and shows the buid 1.
At first, the positioning pins 3a and 3b on the open surface 1b side of the blade are sequentially fitted into a pair of through holes (in the illustrated example, those to be engaged with holes 8a' and 8b') drilled in the disk 6. The engaging surface S is then welded 9. When this is completed, the shroud 4 is fitted to the closed surface 1a side of the blade 1 by engaging with the positioning pin 2 of the blade 1 and the through hole 5 of the shroud 4, and the front and rear ends of the blade 1 are step-welded to the shroud 4. Do what you want. FIG. 3 is a longitudinal sectional view of the impeller thus assembled. In addition, 10 in the drawing
is a rivet that connects the disk 5 and the boss 6.
本発明は以上の如く構成するのであり、ブレイ
ド１はロストワツクス法で片端が閉鎖され他端が
開放された中空状に精密鋳造されていることから
実質的な溶接部分は開放面１ｂ側のデイスク６と
の接合面だけで良いのであり、これは位置決めピ
ン３ａ，３ｂを使用して簡単に係合嵌着させなが
ら容易に実施することができる。しかして、あと
はブレイド１の閉鎖面１ａ側の位置決めピン２と
シユラウド４の透孔５とを係合することにより止
着させ、このさいの接合面は単にブレイド１の前
後端位置のみを、溶接するようになすのである。 The present invention is constructed as described above, and since the blade 1 is precision cast in a hollow shape with one end closed and the other end opened using the lost wax method, the substantial welding part is the disk 6 on the open surface 1b side. All that is required is the joint surface with the holder, and this can be easily accomplished by simply engaging and fitting using the positioning pins 3a and 3b. After that, the positioning pin 2 on the closed surface 1a side of the blade 1 is engaged with the through hole 5 of the shroud 4 to fix it. At this time, the joining surface is only the front and rear end positions of the blade 1. It is like welding.
しかして、該溶接はシユラウドの外周縁と内周
端から溶接器具をのぞましめるだけで行うことが
できることから、該溶接作業は簡単で特別な技術
や時間が掛るものとはならない。 Since the welding can be carried out by simply looking at the welding tool from the outer and inner edges of the shroud, the welding operation is simple and does not require any special techniques or time.
（考案の効果）
本発明品は精度に優れており、製造容易で且つ
安価となし得るものである。また、その送風機効
率は従来品に比べて10〜15％向上するのであり、
これに対し騒音は逆に低くなるものである。(Effects of the invention) The product of the present invention has excellent precision, is easy to manufacture, and can be made at low cost. In addition, the blower efficiency is improved by 10 to 15% compared to conventional products.
On the other hand, the noise level is reduced.
添附図面は本発明方法実施の一例を示すもので
第１図は分解したさいの各部品斜視図、第２図は
組立状態図、第３図は組立品の縦断面図である。
１……ブレイド、２……位置決めピン、３ａ，
３ｂ……位置決めピン、４……シユラウド、５…
…透孔、６……デイスク、８a1，８b1，８a2，８
b2，８a3，８b3……透孔。
The accompanying drawings show an example of carrying out the method of the present invention, and FIG. 1 is a perspective view of each part when disassembled, FIG. 2 is an assembled state diagram, and FIG. 3 is a longitudinal sectional view of the assembled product. 1...Blade, 2...Positioning pin, 3a,
3b...Positioning pin, 4...Shroud, 5...
...Through hole, 6...Disk, 8a 1 , 8b 1 , 8a 2 , 8
b 2 , 8a 3 , 8b 3 ... through hole.
Claims (1)
翼断面形状をなすと共に、閉鎖面側の凡そ中央部
分及び開放面側の前後端部分に夫々れ位置決めピ
ンの取付けられたブレイドをロストワツクス法で
一体製造し、他方シユラウド及びデイスクには上
記各位置決めピンの係合嵌入される透孔を穿設
し、これら透孔を介しシユラウドとデイスク間に
ブレイドを嵌合止着させて製造することを特徴と
した送風機羽根車の製造方法。1. A blade having a cross-sectional shape of a hollow airplane wing with one end closed and the other open, and with positioning pins attached to approximately the center of the closed side and the front and rear ends of the open side, respectively, is made using the lost wax method. The shroud and the disk are manufactured integrally, and the shroud and the disk are provided with through holes into which the respective positioning pins are engaged, and the blade is fitted and secured between the shroud and the disk through these through holes. A method of manufacturing a blower impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15479885A JPS6217399A (en) | 1985-07-13 | 1985-07-13 | Manufacture of blower impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15479885A JPS6217399A (en) | 1985-07-13 | 1985-07-13 | Manufacture of blower impeller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6217399A JPS6217399A (en) | 1987-01-26 |
| JPH0151678B2 true JPH0151678B2 (en) | 1989-11-06 |
Family
ID=15592120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15479885A Granted JPS6217399A (en) | 1985-07-13 | 1985-07-13 | Manufacture of blower impeller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6217399A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020261554A1 (en) * | 2019-06-28 | 2020-12-30 | Ｊｆｅスチール株式会社 | Round bar surface defect inspection method and surface defect inspection device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100438277B1 (en) * | 2001-12-18 | 2004-07-02 | 엘지전자 주식회사 | Manufacturing method of impeller |
| JP2011094544A (en) * | 2009-10-30 | 2011-05-12 | Panasonic Corp | Electric blower and electric vacuum cleaner using the same |
| CN108953230A (en) * | 2018-08-06 | 2018-12-07 | 南京磁谷科技有限公司 | A kind of centrifugal blower diffuser structure |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53137310U (en) * | 1977-04-05 | 1978-10-30 | ||
| JPS5540201A (en) * | 1978-08-04 | 1980-03-21 | Mitsui Eng & Shipbuild Co Ltd | Manufacturing method of impeller |
-
1985
- 1985-07-13 JP JP15479885A patent/JPS6217399A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020261554A1 (en) * | 2019-06-28 | 2020-12-30 | Ｊｆｅスチール株式会社 | Round bar surface defect inspection method and surface defect inspection device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6217399A (en) | 1987-01-26 |
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