JPH02219444A - Manufacture of cage rotor - Google Patents
Manufacture of cage rotorInfo
- Publication number
- JPH02219444A JPH02219444A JP3867289A JP3867289A JPH02219444A JP H02219444 A JPH02219444 A JP H02219444A JP 3867289 A JP3867289 A JP 3867289A JP 3867289 A JP3867289 A JP 3867289A JP H02219444 A JPH02219444 A JP H02219444A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- bar
- rotor bar
- end ring
- casting
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 238000005242 forging Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 16
- 241000555745 Sciuridae Species 0.000 claims description 12
- 238000005266 casting Methods 0.000 abstract description 13
- 238000003466 welding Methods 0.000 abstract description 4
- 230000002123 temporal effect Effects 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 12
- 238000004512 die casting Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Induction Machinery (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、回転電機のかご形回転子の製造方法に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of manufacturing a squirrel cage rotor for a rotating electric machine.
従来かご形回転子においては、回転子バーとエンドリン
グを一体に成形するアルミダイキャスト方式と、銅また
は銅合金打込バ一方式にエンドリングをろう付または溶
接する方法が実用化されている。また、回転子バーの鋳
ぐるみ方法については、特開昭54−54209号、特
開昭59−59052号、特開昭51−71824号に
示されている。Conventionally, for squirrel cage rotors, two methods have been put into practical use: an aluminum die-casting method in which the rotor bar and end ring are integrally molded, and a method in which the end ring is brazed or welded to a copper or copper alloy driven bar. . Further, methods for casting rotor bars are disclosed in Japanese Patent Application Laid-open Nos. 54-54209, 59052-1982, and 71824-1982.
第3図はそのうちの特開昭54−54209号公報に示
されたかご形回転子の製造方法を示す断面図であり、第
4図は特開昭51−71824号公報に示された回転子
バーの端面形状である。第3図、第4図において、1は
回転子バー、2は鉄心、3はエンドリング、4はアルミ
ニウムハンダまたは金属メツキ、5はスリット、6は回
転子バ一端部である。Fig. 3 is a cross-sectional view showing a manufacturing method of a squirrel cage rotor disclosed in JP-A-54-54209, and Fig. 4 is a sectional view of the rotor shown in JP-A-51-71824. This is the end shape of the bar. In FIGS. 3 and 4, 1 is a rotor bar, 2 is an iron core, 3 is an end ring, 4 is aluminum solder or metal plating, 5 is a slit, and 6 is one end of the rotor bar.
従来、かご形誘導電動機の2次導体には、アルミダイキ
ャスト方式が多く採用されているにもかかわらず、打込
アルミバ一方式はバーとエンドリングの接合部の信頼性
が低く、接合強度を考慮すると、銅または銅合金に対す
る銀ろう方式よりも有利な条件となり得ないこと等の理
由により、あまり採用されていなかった。また、アルミ
ダイキャスト回転子の大形化が進み、これに伴って湯の
まわりが悪化し、鋳込反対側のエンドリング内部に空洞
状の巣穴が発生し、回転電機の特性が悪化し、場合によ
っては、運転中にエンドリングが破壊する恐れが出現す
るようになった。Conventionally, aluminum die-casting has been widely used for the secondary conductor of squirrel-cage induction motors, but the one-type cast aluminum bar has low reliability at the joint between the bar and the end ring, making it difficult to maintain the joint strength. Considering this, it has not been widely adopted for reasons such as the fact that the conditions are not more advantageous than the silver soldering method for copper or copper alloys. In addition, as aluminum die-cast rotors have become larger, the flow of hot water has deteriorated, creating cavities inside the end ring on the opposite side of the casting, and deteriorating the characteristics of rotating electrical machines. In some cases, there is a risk that the end ring may break while driving.
なお、回転子バーのアルミダイキャスト鋳ぐるみ方式で
は、回転子バー1にアルミハンダまたは金属メツキ4を
施す方法、回転子バ一端部6にスリット5を入れ、溶着
を容易にする方法などがある。In addition, in the aluminum die-cast casting system for the rotor bar, there are methods such as applying aluminum solder or metal plating 4 to the rotor bar 1, and making a slit 5 in one end 6 of the rotor bar to facilitate welding. .
従来のアルミダイキャスト方式の回転子の製造方法では
、回転子が大形化すると、エンドリング部に大きな巣が
発生したり、また回転子バーの鋳ぐるみ方式でも、ハン
ダやメツキ作業が必要であったりし、さらにまた、ダイ
キャスト方式での鋳ぐるみでは、エンドリング部に凝固
収縮に伴う引は巣の発生は避けられず、品質面、強度面
で問題があった。With the conventional aluminum die-cast rotor manufacturing method, when the rotor becomes large, large cavities occur in the end ring, and even with the rotor bar casting method, soldering and plating work are required. Furthermore, in die-cast castings, the occurrence of shrinkage cavities in the end ring due to solidification and shrinkage is unavoidable, which poses problems in terms of quality and strength.
この発明は上記のような課題を解消するためになされた
もので、回転子バーとエンドリングの溶着が良好に行わ
れ、エンドリングの鋳巣がない、回転子バーとエンドリ
ングの鋳ぐるみ方式の良好なかご形回転子の製造方法を
得ることを目的とする。This invention was made to solve the above-mentioned problems, and provides a cast-in system for the rotor bar and end ring, in which the rotor bar and end ring are well welded and there is no cavity in the end ring. The purpose of the present invention is to obtain a method for manufacturing a squirrel cage rotor with good quality.
この発明に係るかご形回転子の製造方法は、回転子スロ
ットに打込んだ回転子バーの端部に鋸刃状の切込みと穴
とを設け、この部をエンドリングにより鋳ぐるみ、かつ
エンドリングの形式は、溶湯鍛造法により形成するよう
にしたものである。The method for manufacturing a squirrel cage rotor according to the present invention includes providing a saw blade-like cut and a hole in the end of a rotor bar driven into a rotor slot, and casting this part with an end ring. This type is formed by a molten metal forging method.
この発明におけるかご形回転子は、回転子バーの端部に
鋸刃状の切込と穴をもったものを、溶湯鍛造法によるエ
ンドリングにより鋳ぐるまれることにより形成され、強
度上及び品質上も安定したものとなる。The squirrel cage rotor in this invention is formed by having saw blade-like notches and holes at the end of a rotor bar, and casting it with an end ring using a molten metal forging method, which improves strength and quality. The top will also be stable.
以下、この発明の一実施例を図について説明する。第1
図は回転子バーとエンドリングで鋳ぐるむ方法を示す断
面図であり、第2図は回転子バーの端部の形状を示す正
面図aと側面図すである。An embodiment of the present invention will be described below with reference to the drawings. 1st
The figure is a sectional view showing a method of casting with a rotor bar and an end ring, and FIG. 2 is a front view a and a side view showing the shape of the end of the rotor bar.
第1図において、1は回転子バー、2は鉄心、7はエン
ドリング形成部の金型であり、7aはそのエンドリング
形成部、7bはゲート部である。8は仮軸、9は導体材
料、lOは加圧プランジャー、11はスリーブ、12は
型締用移動テーブルである。また、第2図において、1
3は鋸刃状の切込、14は丸穴である。In FIG. 1, 1 is a rotor bar, 2 is an iron core, 7 is a mold for an end ring forming part, 7a is the end ring forming part, and 7b is a gate part. 8 is a temporary shaft, 9 is a conductive material, IO is a pressure plunger, 11 is a sleeve, and 12 is a movable table for mold clamping. Also, in Figure 2, 1
3 is a saw blade-like cut, and 14 is a round hole.
次に製造方法について説明する。仮軸8に鉄心2を積層
し、回転子バー1をスロットに打込む。Next, the manufacturing method will be explained. The iron core 2 is stacked on the temporary shaft 8, and the rotor bar 1 is driven into the slot.
回転子バー1の端部には溶着を容易にするため、鋸刃状
の切込13と丸穴14を加工している。そしてこの回転
子を金型7にセットし、型締用移動テーブル12で型締
後、片側7a部のエンドリングを鋳込む、この鋳込は、
アルミダイキャスト法に比較して大きなゲート7bを通
し、回転子バ一端部を鋳ぐるみながらエンドリングを形
成する。このエンドリングの形式は、溶湯鍛造法により
、導体材料9を1ランジヤー10で押上げ、流速が1■
/S以下の低速で行う、また、鋳込後、凝固完了まで、
高圧(500kg/ci以上)の圧力を保持する。この
ことにより、従来のダイキャストの鋳込に比較し、凝固
収縮に伴う鋳巣の発生もなく、鋸刃状の切込や丸穴によ
り溶着も容易になり、強度上も良好となる。A saw blade-like notch 13 and a round hole 14 are machined at the end of the rotor bar 1 to facilitate welding. Then, this rotor is set in the mold 7, and after the mold is clamped by the movable mold clamping table 12, the end ring on one side 7a is cast.
An end ring is formed by casting one end of the rotor bar through a gate 7b which is larger than that in the aluminum die casting method. This type of end ring uses a molten metal forging method to push up the conductor material 9 with one runger 10, and the flow rate is 1
/S or less, and after casting until the completion of solidification,
Maintain high pressure (500 kg/ci or more). As a result, compared to conventional die-casting, there is no formation of cavities due to solidification shrinkage, welding is facilitated by the saw blade-like cuts and round holes, and the strength is also improved.
アルミダイキャストでは、大形化で問題となる反鋳込側
のエンドリングの空洞の心配もなく、片側ずつエンドリ
ングを形成することにより、大形のアルミニウム回転子
の製作が可能となる。With aluminum die casting, there is no need to worry about cavities in the end ring on the non-casting side, which is a problem when increasing the size, and by forming end rings on one side at a time, it is possible to manufacture a large aluminum rotor.
以上のように、この発明によれば、回転子バーに鋸刃状
の切込と丸穴を設け、この回転子バーを溶湯鍛造により
形成されるエンドリングで鋳ぐるむようにしたので、ス
ロット部も健全で、エンドリング部も巣のない、大形の
かご形回転子が得られ、従来、銅または銅合金で製作さ
れていたものも、アルミニウムで製作されるようになり
、安価で品質上も安定したかご形回転子が得られる効果
がある。As described above, according to the present invention, the rotor bar is provided with a saw blade-like notch and a round hole, and the rotor bar is surrounded by an end ring formed by molten metal forging. A large squirrel cage rotor that is sound and has no cavities in the end rings can be obtained, and those that were previously made of copper or copper alloy are now made of aluminum, which is cheaper and has better quality. This has the effect of providing a stable squirrel cage rotor.
第1図はこの発明の一実施例によるかご形回転子の製造
方法を示す断面図、第2図はこの発明に係る回転子バー
の端部の形状を示す正面図aとその側面図すである。第
3図は従来のかご形回転子の製造方法を示す断面図、第
4図は従来の回転子バーを示す正面図aと側面図すであ
る。
図中、1は回転子バー、2は鉄心、7は金型、7aはエ
ンドリング形成部、7bはゲート部、8は仮軸、9は導
体材料、10は加圧プランジャー、11はスリーブ、1
2は型締移動テーブル、13は鋸刃状の切込、14は丸
穴である。
なお、図中同一符号は同−又は相当部分を示す。FIG. 1 is a sectional view showing a method of manufacturing a squirrel cage rotor according to an embodiment of the present invention, and FIG. 2 is a front view a and a side view thereof showing the shape of the end of a rotor bar according to the present invention. be. FIG. 3 is a sectional view showing a conventional method of manufacturing a squirrel cage rotor, and FIG. 4 is a front view a and a side view showing a conventional rotor bar. In the figure, 1 is a rotor bar, 2 is an iron core, 7 is a mold, 7a is an end ring forming part, 7b is a gate part, 8 is a temporary shaft, 9 is a conductive material, 10 is a pressure plunger, 11 is a sleeve ,1
2 is a mold clamping moving table, 13 is a saw blade-like cut, and 14 is a round hole. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
スロットに打込み、この回転子バーの両端突出部をかご
形回転子のエンドリングを形成する金形にはめ込んだ後
、溶湯鍛造方法にてエンドリングを形成し、回転子バー
を鋳ぐるむことを特徴とするかご形回転子の製造方法。After driving a rotor bar with a serrated cut and a hole in the end into the rotor slot, and inserting the protrusions at both ends of the rotor bar into the mold that forms the end ring of the squirrel cage rotor. A method for manufacturing a squirrel cage rotor, characterized in that an end ring is formed by a molten metal forging method, and a rotor bar is cast around the end ring.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3867289A JPH02219444A (en) | 1989-02-17 | 1989-02-17 | Manufacture of cage rotor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3867289A JPH02219444A (en) | 1989-02-17 | 1989-02-17 | Manufacture of cage rotor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH02219444A true JPH02219444A (en) | 1990-09-03 |
Family
ID=12531764
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3867289A Pending JPH02219444A (en) | 1989-02-17 | 1989-02-17 | Manufacture of cage rotor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02219444A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130106233A1 (en) * | 2010-07-08 | 2013-05-02 | Nhk Spring Co., Ltd. | Squirrel-cage rotor and manufacturing method of squirrel-cage rotor |
FR3095091A1 (en) * | 2019-04-11 | 2020-10-16 | Favi-Le Laiton Injecte | manufacturing process of a bi-material squirrel cage rotor |
-
1989
- 1989-02-17 JP JP3867289A patent/JPH02219444A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130106233A1 (en) * | 2010-07-08 | 2013-05-02 | Nhk Spring Co., Ltd. | Squirrel-cage rotor and manufacturing method of squirrel-cage rotor |
FR3095091A1 (en) * | 2019-04-11 | 2020-10-16 | Favi-Le Laiton Injecte | manufacturing process of a bi-material squirrel cage rotor |
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