JPS5910150A - Steel plate frame rotary electric machine - Google Patents
Steel plate frame rotary electric machineInfo
- Publication number
- JPS5910150A JPS5910150A JP11768182A JP11768182A JPS5910150A JP S5910150 A JPS5910150 A JP S5910150A JP 11768182 A JP11768182 A JP 11768182A JP 11768182 A JP11768182 A JP 11768182A JP S5910150 A JPS5910150 A JP S5910150A
- Authority
- JP
- Japan
- Prior art keywords
- frame
- welding
- cooling fin
- welded
- fin
- 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
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Frames (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は鋼板製フレームの外側に冷却フィンを溶接した
鋼板フレーム回転電機に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a steel plate frame rotating electrical machine in which cooling fins are welded to the outside of a steel plate frame.
機の正面図であシ、第２図は第１図のｕ−■線に沿う矢
視側断面図、第３図は第２図の冷却フィン要部拡大断面
図、第４図は第３図のＩＶ−ＩＶ線に沿う矢視方向の要
部断側面図において、従来の構造は固定子鉄心１に巻線
２を納めた後に、鋼板でｔＪ字形に設けた冷却フィン３
を複数個フレーム４の外周軸方向に溶接し、このフレー
ム４内に固定子鉄心１を挿嵌して設け、固定子鉄心１の
内径には空隙を介して回転軸６に嵌着した回転子鉄心７
を設け、回転軸６の両端の軸受（図示しない）を介して
、両側の軸受ブラケット８に回転子鉄心７を回転自在に
支承して設ける。しかして、Ｕ字形の冷却フィン３は予
め底部に溶接用下穴９を穿ち、ＭＩＧ溶接により溶接金
属１２を埋めてフレーム４の外周軸方向の複数箇所で、
溶接固定する。この溶接箇所の溶接点１３においては、
断面積１８の溶接部１４が得られる。上記した従来の構
造では、Ｕ字形の冷却フィン３とフレーム４とが、溶接
点１３の溶接部１４の断面積１８０箇所においては剛体
に溶着固の部分においては、密着形成が困難である。た
とへ溶接する事前にフレーム４の外周軸方向と冷却フィ
ン３との接合面が密着するように、冷却フィン３を高精
度に機械加工を行なっても、発生する溶接熱で変形して
しまった。この為に回転電機の発生熱がフレーム４から
冷却フィン３への熱伝達が十分に成されないので、十分
な冷却効果が得られないという欠点があった。尚、ＭＩ
Ｇ溶接では発生する溶接熱が比較的高いのてフレーム４
の熱変形が大きく、この為にフレーム４内に固定子鉄心
１を圧入する作業が困難であるという欠点もあった。2 is a side sectional view taken along the line u-■ in FIG. 1, FIG. 3 is an enlarged sectional view of the main part of the cooling fin in FIG. In the cross-sectional side view of the main part in the arrow direction along the IV-IV line in the figure, in the conventional structure, after the winding 2 is housed in the stator core 1, cooling fins 3 are provided in a tJ shape with a steel plate.
A plurality of stator cores 1 are welded in the direction of the outer circumferential axis of the frame 4, and a stator core 1 is inserted into the frame 4, and a rotor fitted to the rotating shaft 6 through a gap is provided on the inner diameter of the stator core 1. iron core 7
The rotor core 7 is rotatably supported by bearing brackets 8 on both sides via bearings (not shown) at both ends of the rotating shaft 6. Therefore, the U-shaped cooling fins 3 are made by pre-drilling pilot holes 9 for welding in the bottom and filling the weld metal 12 by MIG welding at multiple locations along the outer circumferential axis of the frame 4.
Fix by welding. At welding point 13 of this welding location,
A weld 14 with a cross-sectional area 18 is obtained. In the above-described conventional structure, it is difficult to form close contact between the U-shaped cooling fins 3 and the frame 4 in a portion where the U-shaped cooling fins 3 and the frame 4 are welded to a rigid body at 180 cross-sectional areas of the welded portion 14 at the welded point 13. Even though the cooling fins 3 were machined with high precision so that the joint surface between the outer circumferential axis of the frame 4 and the cooling fins 3 were in close contact with each other before welding them together, the cooling fins 3 were deformed by the welding heat generated. . For this reason, the heat generated by the rotating electric machine is not sufficiently transferred from the frame 4 to the cooling fins 3, resulting in a drawback that a sufficient cooling effect cannot be obtained. Furthermore, MI
Since the welding heat generated in G welding is relatively high, frame 4
There is also a drawback that the thermal deformation of the stator core 1 is large, which makes it difficult to press-fit the stator core 1 into the frame 4.
本発明は上記した事情に鑑みて成されたもので、従来の
欠点を改良し、フレームとＵ字形の冷却フィンとの接触
面積を拡大し、且つ、冷却フィン溶接時のフレームの熱
変形を小くなりシ、寸法精度を向上して剛体に溶接形成
した錫ｉ板フレーム回転％、 Ｆ！＜を提供する字を目
的とするものである。The present invention has been made in view of the above-mentioned circumstances, and it improves the conventional drawbacks, expands the contact area between the frame and the U-shaped cooling fins, and reduces thermal deformation of the frame when welding the cooling fins. The rotation percentage of the tin plate frame, which is welded to a rigid body with improved dimensional accuracy, is F! It is intended for characters that provide <.
〔発明の実施例〕
以下に本発明の一実施例を図面な参照して説明する。第
５図は本発明の抵抗スポット溶接中の冷却フィン要部拡
大断面図、第６図は本発明の／ｌｌ’ｌ却フィン要部拡
大断面図、第７図は第６図の■−Ｖｌｌ線に沿う矢視断
面図である。但し前ｈｉシした従来と同一部分は同一符
号を用い詳細な説明は省皓づ′る。[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to the drawings. Fig. 5 is an enlarged cross-sectional view of the main part of the cooling fin during resistance spot welding of the present invention, Fig. 6 is an enlarged cross-sectional view of the main part of the cooling fin of the present invention, and Fig. 7 is the ■-Vll of Fig. 6. FIG. 3 is a cross-sectional view taken along the line. However, parts that are the same as those of the previously mentioned prior art are designated by the same reference numerals, and a detailed explanation will be omitted.
本発明は第５図乃至第７図で示すように、Ｕ字形の冷却
フィン３とフレーム４とは複数摘所の溶接点１４におい
て、抵抗スポット溶接の上部電極１６と下部電極１７で
それぞれ挾鶏状態に設け、旧つ上部−極】６の先端は球
面状の突部１６ａを設ける。しかして、抵抗スポット溶
接時には球面状の突部１６ａを冷却フ・ｒン３のベース
部１９に押込むように加圧し、通電して、冷却フ・ｆン
３をフレーム４の外周軸方向に溶接する。この場合、冷
却フィン３とフレー１．４との接触面間には翫面積１８
ａの溶接部１４を生ずると共に、冷却フィン３０ベース
剖１９に塑性変形が加えられ、断面積１８ａの溶接部１
４の周囲が塑性変形し、接触面積２０に拡大密着した密
着部１５ヲ、フレーム４の軸方向の複敬箇所で形成する
。As shown in FIGS. 5 to 7, the U-shaped cooling fins 3 and the frame 4 are welded at a plurality of welding points 14 by an upper electrode 16 and a lower electrode 17 of resistance spot welding, respectively. The tip of the upper pole 6 is provided with a spherical protrusion 16a. Therefore, during resistance spot welding, the spherical protrusion 16a is pressed into the base part 19 of the cooling fan 3, and electricity is applied to weld the cooling fan 3 in the direction of the outer circumferential axis of the frame 4. . In this case, there is an area of 18 between the contact surfaces between the cooling fins 3 and the flares 1.4.
At the same time, plastic deformation is applied to the cooling fin 30 base section 19 to form the welded part 14 with a cross-sectional area 18a.
The periphery of the frame 4 is plastically deformed, and a contact area 15 that is enlarged and adheres to the contact area 20 is formed at a double contact point in the axial direction of the frame 4.
尚、下部電極１７がフレーム４の内周軸方向に密接する
円弧面で支持し、溶接時のフレーム４の内周面の変形を
阻止する。しかして、フレーム４の外周軸方向に順次複
数個の冷却フィン３を抵抗スポット溶接で溶着固定して
形成する。Note that the lower electrode 17 supports the frame 4 with an arcuate surface closely spaced in the direction of the inner circumferential axis to prevent deformation of the inner circumferential surface of the frame 4 during welding. Thus, a plurality of cooling fins 3 are sequentially welded and fixed in the direction of the outer circumferential axis of the frame 4 by resistance spot welding.
本発明による抵抗スポット溶接によれば、上部電極の先
端を冷却フィンのベース部に押込み、フレームの外周軸
方向の複数箇所で、加圧通電溶接すると共に、冷却フィ
ンのベース部に塑性変形が加えられて密着部が溶接部の
周囲で、拡大されるので、従来のＭＩＧ溶接の場合と比
較して、密着部による接触程度が増し、冷却フィンに熱
伝達し放熱する放熱効果が向上し、更に溶接部と密着部
とで剛性が増した割合に抵抗スポット溶接時に発生する
溶接熱Ｑユ、従来と比較した場合少々く、それだけフレ
ームの熱変形による歪の発生が防止されるので、フレー
ム内径に固定子鉄心の圧入が容易で品質が向上する効果
がある。According to the resistance spot welding according to the present invention, the tip of the upper electrode is pushed into the base of the cooling fin, and pressure and current welding is performed at multiple locations in the axial direction of the outer circumference of the frame, and plastic deformation is applied to the base of the cooling fin. Since the close contact area is expanded around the welded part, the degree of contact by the close contact area is increased compared to conventional MIG welding, and the heat dissipation effect of transferring heat to the cooling fins and dissipating the heat is improved. The welding heat generated during resistance spot welding due to the increase in rigidity between the welded part and the close contact part is slightly lower than that of conventional methods, and as distortion due to thermal deformation of the frame is prevented, the inner diameter of the frame can be reduced. It is easy to press-fit the stator core, which has the effect of improving quality.
第１図は従来のＷｉ板フレーム回転電機の正面図、第２
図は第１図の■−■線に沿う矢視方向の側断面図、第３
図は第２図の冷却フィン要部拡Ｊ断面図、第４図は第３
図の■−ＩＶ線に沿う矢視断面図、第５図は本発明の抵
抗スポット溶接中の冷却フィン要部拡大断面図、第６図
は本発明の冷却フィン要部拡大断面図、第７図は第６図
の■−■線に沿う矢視断面図である。
１・・・固定子鉄心 ３・・・冷却フィン４・・フ
レーム １４・・・溶’７１ Ｎ１５・ 密着部
１６ 上部を極１６ａ・・先端球面状の突部１８．
１８ａ・・・溶接部の而８ｉ１９・・・冷却フィンのべ
一２部２０ 密着部の面積
（７３１７） 代理人 弁理士 則 近 憲 伯 （
ほか１名）第１図
第３図
第４図Figure 1 is a front view of a conventional Wi board frame rotating electrical machine, Figure 2
The figure is a side sectional view in the direction of arrows along the line ■-■ in Figure 1,
The figure is an enlarged J sectional view of the main part of the cooling fin in Figure 2, and Figure 4 is an enlarged J cross-sectional view of the cooling fin main part in Figure 2.
5 is an enlarged sectional view of the main part of the cooling fin during resistance spot welding of the present invention; FIG. 6 is an enlarged sectional view of the main part of the cooling fin of the present invention; The figure is a sectional view taken along the line ■-■ in FIG. 6. 1... Stator core 3... Cooling fins 4... Frame 14... Welded '71 N15/Adhesive part 16 Upper part is pole 16a... Spherical tip protrusion 18.
18a...The details of the welded part8i19...2 parts of the cooling fin 20 Area of the close contact part (7317) Agent Patent attorney Noriyuki Chika (
(1 other person) Figure 1 Figure 3 Figure 4
Claims (1)
ィンを溶接固定した鋼板フレーム回転電機において、フ
レームの外周に冷却フィンのベース部を当接し、上部電
極の先端球面状の突部を、抵抗スポット溶接時に冷却フ
ィンのベース部に押し込み、下部電極とで挟着状態に加
圧したうえ通電し、相互の接触面間を溶接するとともに
、フレームと冷却フィンの溶接部の周囲において塑性変
形し密着部を形成した事を特徴とする鋼板フレーム回転
電機。In a steel frame rotating electrical machine in which the frame holding the stator core is made of steel and cooling fins are welded and fixed to the outer periphery, the base of the cooling fin is brought into contact with the outer periphery of the frame, and the spherical protrusion at the tip of the upper electrode is connected to the resistor. During spot welding, it is pushed into the base of the cooling fin, pressurized with the lower electrode, and then energized to weld the mutual contact surfaces, and plastically deforms around the welded part of the frame and cooling fin to form a tight bond. A steel plate frame rotating electric machine characterized by forming a section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11768182A JPS5910150A (en) | 1982-07-08 | 1982-07-08 | Steel plate frame rotary electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11768182A JPS5910150A (en) | 1982-07-08 | 1982-07-08 | Steel plate frame rotary electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5910150A true JPS5910150A (en) | 1984-01-19 |
Family
ID=14717648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11768182A Pending JPS5910150A (en) | 1982-07-08 | 1982-07-08 | Steel plate frame rotary electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5910150A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61180553A (en) * | 1985-02-06 | 1986-08-13 | Mitsubishi Electric Corp | Manufacture of frame for rotary electric machine |
| CN102882314A (en) * | 2012-10-23 | 2013-01-16 | 哈尔滨工业大学 | Cooling structure for ultraprecise linear motor |
| CN103078439A (en) * | 2013-01-23 | 2013-05-01 | 无锡锡山安达防爆电气设备有限公司 | Steel-plate machine shell |
-
1982
- 1982-07-08 JP JP11768182A patent/JPS5910150A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61180553A (en) * | 1985-02-06 | 1986-08-13 | Mitsubishi Electric Corp | Manufacture of frame for rotary electric machine |
| CN102882314A (en) * | 2012-10-23 | 2013-01-16 | 哈尔滨工业大学 | Cooling structure for ultraprecise linear motor |
| CN103078439A (en) * | 2013-01-23 | 2013-05-01 | 无锡锡山安达防爆电气设备有限公司 | Steel-plate machine shell |
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