CH167285A - Process for the production of laminated cores for electrical machines and apparatus. - Google Patents
Process for the production of laminated cores for electrical machines and apparatus.Info
- Publication number
- CH167285A CH167285A CH167285DA CH167285A CH 167285 A CH167285 A CH 167285A CH 167285D A CH167285D A CH 167285DA CH 167285 A CH167285 A CH 167285A
- Authority
- CH
- Switzerland
- Prior art keywords
- sheets
- production
- electrical machines
- weld
- laminated core
- Prior art date
Links
Landscapes
- Manufacture Of Motors, Generators (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Description
Verfahren zur Herstellung von Blechpaketen für elektrische Maschinen und Apparate. Die lamellierten Blechpakete für elektri sche Maschinen und Apparate, wie beispiels weise die Statorbleche von Einbaumotoren oder lamellierte Pole bezw. Polschuhe von Gleichstrom- oder Synchronmaschinen, fer ner die Magnetkörper von Apparaten etc., werden häufig durch Pressbolzen, Nieten, Sprengringe und dergleichen zusammen gehalten.
Gemäss der Erfindung können aber solche Bleche auf sehr einfache Weise ohne Ver wendung von Schrauben oder Nieten durch Schweissen zusammengehalten werden.
Gegenstand der Erfindung ist ein Ver fahren zur Herstellung von Blechpaketen für elektrische Maschinen und Apparate, bei wel chem die in Paketform aneinander gelegten Bleche durch mehrere Schweissnähte mitein ander verbunden werden.
Am Umfang der Bleche können Nuten eingestanzt werden, die zur Aufnahme des Schweissgutes dienen, so dass ein glattes Blech paket entsteht. Es ist aber nicht unbedingt erforderlich, dass die Schweissnähte in Nuten liegen, sondern der Erfindungsgedanke lässt sich auch verwirklichen dadurch, dass die Bleche mittelst Schweissraupen zusammen gehalten werden.
In der Zeichnung sind einige Ausführungs beispiele von nach der Erfindung hergestell ten Blechpaketen veranschaulicht. In Fig. 1 ist das Blech a am äussern Umfang mit Aus sparungen b zur Aufnahme der Schweiss nähte versehen. Die Fig. 2 zeigt, wie die einzelnen Bleche a eines lamellierten Pols mittelst in Nuten b untergebrachten Schweiss gutes, sowie durch Schweissraupen c zusam mengehalten werden können.
Für manche Zwecke, wie zum Beispiel zur Aufnahme von Halteschrauben oder zur Zentrierung usw., ist es vorteilhaft, in oder auf die lamellierten Bleche einen Profilstab ein- oder aufzulegen und ihn mit dem Blech paket zu verschweissen. Die Fig. 3 veran schaulicht diese weitere Entwicklung der Er- findun. In geeigneten Nuten sind Profil- kn stäbe d axial eingelegt und mit den Blech paketen verschweisst. In Fig. 4 ist eine ähn liche Ausführung dargestellt, nur mit dem Unterschied, dass der Stab d ausserhalb und nicht in einer Aussparung des Blechpaketes a sich befindet.
Eingelegte Stäbe, wie in Fig. 3, sind auch geeignet, bei hohem Pressdruck die Zugspan nung aufzunehmen und die Schweissnaht so zu entlasten, dass sie im wesentlichen nur auf Schub beansprucht ist.
Die Nahtverschweissung des Blechpaketes direkt in Nuten oder mit Profilstücken bietet bei segmentierten, geschichteten Rotorblechen eine gute Aufnahmemöglichkeit für die durch Zentrifugal- und Umfangskraft verursachten Tangentialkräfte, indem diese als Schub spannungen in einer sehr grossen Anzahl von Querschnitten in den Schweissnähten auf genommen werden. Ferner ersetzt dieses Ver fahren die häufig üblichen Schichtbolzen, welche gleichzeitig zur Verschichtung und radialen Abfangung dienen. Dadurch wird ein besonderer Stützring entbehrlich.
Selbstverständlich ist das geschilderte Ver fahren ebensogut anwendbar für isolierte, wie für unisolierte Bleche.
Process for the production of laminated cores for electrical machines and apparatus. The laminated laminated cores for electrical cal machines and apparatus, such as, for example, the stator laminations of built-in motors or laminated poles respectively. Pole shoes of direct current or synchronous machines, fer ner the magnetic bodies of apparatus, etc., are often held together by press bolts, rivets, snap rings and the like.
According to the invention, however, such sheets can be held together by welding in a very simple manner without the use of screws or rivets.
The invention relates to a process for the production of sheet metal stacks for electrical machines and apparatus, in wel chem the sheets placed next to one another in package form are connected to each other by several welds.
Grooves can be punched on the circumference of the sheets, which serve to hold the weld metal, so that a smooth sheet package is created. However, it is not absolutely necessary for the weld seams to lie in grooves, but the idea of the invention can also be implemented in that the metal sheets are held together by means of weld beads.
In the drawing, some embodiment examples of hergestell th sheet stacks according to the invention are illustrated. In Fig. 1, the sheet a is provided on the outer circumference with cutouts b for receiving the weld seams. Fig. 2 shows how the individual sheets a of a laminated pole can be held together by means of welds housed in grooves b and weld beads c together.
For some purposes, such as for receiving retaining screws or for centering, etc., it is advantageous to insert or place a profile bar in or on the laminated sheets and weld it to the sheet metal package. 3 illustrates this further development of the invention. Profile kn rods d are axially inserted in suitable grooves and welded to the laminated core. In Fig. 4 a similar design is shown, only with the difference that the rod d is located outside and not in a recess of the laminated core a.
Inserted rods, as in FIG. 3, are also suitable for absorbing the tensile stress at high pressure and relieving the weld seam so that it is essentially only subjected to thrust.
The seam welding of the laminated core directly in grooves or with profile pieces offers a good way of absorbing the tangential forces caused by centrifugal and circumferential forces in the case of segmented, layered rotor laminations by absorbing them as shear stresses in a very large number of cross-sections in the weld seams. This process also replaces the commonly used layer bolts, which are used for layering and radial support at the same time. This makes a special support ring unnecessary.
Of course, the process described can be used just as well for insulated as for uninsulated sheets.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE167285X | 1932-04-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH167285A true CH167285A (en) | 1934-02-15 |
Family
ID=5686501
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH167285D CH167285A (en) | 1932-04-14 | 1933-03-06 | Process for the production of laminated cores for electrical machines and apparatus. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH167285A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2448785A (en) * | 1945-05-03 | 1948-09-07 | Gen Electric | Laminated core construction |
US2562254A (en) * | 1948-01-21 | 1951-07-31 | Smith Corp A O | Electromagnetic device and method of making same |
DE946169C (en) * | 1942-06-19 | 1956-07-26 | Aeg | Leafed magnetic core |
US2790918A (en) * | 1954-11-29 | 1957-04-30 | Allis Louis Co | Laminated core construction for dynamoelectric machines |
DE1019750B (en) * | 1955-11-21 | 1957-11-21 | Kleinschanzlin Pumpen A G | Welded housing jacket for electric motors, especially for submersible pump motors |
DE1037574B (en) * | 1955-09-12 | 1958-08-28 | Westinghouse Electric Corp | Laminated core, especially for stands for small electric motors, the lamellae of which consist of a sheet metal strip wound on edge |
DE1160533B (en) * | 1959-09-18 | 1964-01-02 | Siemens Ag | Damper winding for salient pole generators |
DE1281539B (en) * | 1962-02-13 | 1968-10-31 | Licentia Gmbh | Electric motor with stand plates connected by plastic glue |
DE102010052217A1 (en) * | 2010-11-24 | 2012-05-24 | Sew-Eurodrive Gmbh & Co. Kg | Electric motor e.g. line start permanent magnet (LSPM) motor has circlip that is arranged inside short circuit cage, such that radial region of circlip is partially covered in recesses in laminated core of rotor |
-
1933
- 1933-03-06 CH CH167285D patent/CH167285A/en unknown
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE946169C (en) * | 1942-06-19 | 1956-07-26 | Aeg | Leafed magnetic core |
US2448785A (en) * | 1945-05-03 | 1948-09-07 | Gen Electric | Laminated core construction |
US2562254A (en) * | 1948-01-21 | 1951-07-31 | Smith Corp A O | Electromagnetic device and method of making same |
US2790918A (en) * | 1954-11-29 | 1957-04-30 | Allis Louis Co | Laminated core construction for dynamoelectric machines |
DE1037574B (en) * | 1955-09-12 | 1958-08-28 | Westinghouse Electric Corp | Laminated core, especially for stands for small electric motors, the lamellae of which consist of a sheet metal strip wound on edge |
DE1019750B (en) * | 1955-11-21 | 1957-11-21 | Kleinschanzlin Pumpen A G | Welded housing jacket for electric motors, especially for submersible pump motors |
DE1160533B (en) * | 1959-09-18 | 1964-01-02 | Siemens Ag | Damper winding for salient pole generators |
DE1281539B (en) * | 1962-02-13 | 1968-10-31 | Licentia Gmbh | Electric motor with stand plates connected by plastic glue |
DE102010052217A1 (en) * | 2010-11-24 | 2012-05-24 | Sew-Eurodrive Gmbh & Co. Kg | Electric motor e.g. line start permanent magnet (LSPM) motor has circlip that is arranged inside short circuit cage, such that radial region of circlip is partially covered in recesses in laminated core of rotor |
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