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
Application number
Other languages
German (de)
Inventor
Cie Aktiengesellschaft Boveri
Original Assignee
Bbc Brown Boveri & Cie
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bbc Brown Boveri & Cie filed Critical Bbc Brown Boveri & Cie
Publication of CH167285A publication Critical patent/CH167285A/en

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  • 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)

PATENTANSPRUCH: Verfahren zur Herstellung von Blech paketen für elektrische Maschinen und Ap parate, dadurch gekennzeichnet, dass die in Paketform aneinander gelegten Bleche durch Schweissnähte miteinander verbunden werden. UNTERANSPRÜCHE: 1. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass die einzelnen Bleche des Blechpaketes mit einer Anzahl Nuten versehen sind, welche zur Aufnahme des Schweissgutes dienen. 2. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass die einzelnen Bleche des Blechpaketes mittelst Schweissraupen auf der ungenuteten Oberfläche verbunden werden. 3. PATENT CLAIM: Process for the production of sheet metal packages for electrical machines and apparatus, characterized in that the sheets placed next to one another in package form are connected to one another by weld seams. SUBClaims: 1. Method according to claim, characterized in that the individual sheets of the laminated core are provided with a number of grooves which are used to accommodate the weld metal. 2. The method according to claim, characterized in that the individual sheets of the laminated core are connected by means of weld beads on the unslotted surface. 3. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass das Blechpaket mit ungefähr axial ein- oder aufgelegten Pro filstäben versehen wird, welch letztere- mit den Blechen verschweisst werden. Method according to patent claim, characterized in that the laminated core is provided with approximately axially inserted or placed profile rods, which latter are welded to the metal sheets.
CH167285D 1932-04-14 1933-03-06 Process for the production of laminated cores for electrical machines and apparatus. CH167285A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (9)

* Cited by examiner, † Cited by third party
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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