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CH232999A - Process for the production of an induction motor with a squirrel cage rotor for high speeds. - Google Patents

Process for the production of an induction motor with a squirrel cage rotor for high speeds.

Info

Publication number
CH232999A
CH232999A CH232999DA CH232999A CH 232999 A CH232999 A CH 232999A CH 232999D A CH232999D A CH 232999DA CH 232999 A CH232999 A CH 232999A
Authority
CH
Switzerland
Prior art keywords
short
high speeds
circuit
squirrel cage
induction motor
Prior art date
Application number
Other languages
German (de)
Inventor
Haftung Licentia Beschraenkter
Original Assignee
Licentia Gmbh
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 Licentia Gmbh filed Critical Licentia Gmbh
Publication of CH232999A publication Critical patent/CH232999A/en

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K17/00Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02Asynchronous induction motors
    • H02K17/16Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
    • H02K17/168Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors having single-cage rotors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Induction Machinery (AREA)

Description

  

  'Verfahren zur Herstellung eines Induktionsmotors mit Käfigläufer für hohe Drehzahlen.    Für manche Zwecke werden heute Induk  tionsmotoren mit Käfigläufern für hohe Dreh  zahlen benötigt, das heisst Motoren, deren  Drehzahlen bei beachtlichen Leistungen über  3000 U/min betragen und bis zu 40 000 U/min  reichen. Die Herstellung der Käfigwicklung,  insbesondere der Kurzschlussringe, machte  bisher bei solchen Induktionsmotoren erheb  liche Schwierigkeiten wegen der hohen Flieh  kraftbeanspruchungen, die in den Kurzschluss  ringen auftreten.  



  Die     Erfindung        betrifft    ein Verfahren zur  Herstellung eines eingangs erwähnten Motors  und beseitigt diese Srhwierigkeiten dadurch,  dass die Kurzschlussringe in an den Stirnseiten  des Läufers vorgesehene Ringnuten durch  elektrische Auftragsschweissung eingebracht  werden.  



  Die Erfindung sei anhand zweier in der  Zeichnung gezeigter Ausführungsbeispiele von  Motoren erläutert, von welchen jeweils nur  die eine Stirnseite gezeichnet ist. Bei dem in    der Fig. 1 dargestellten Ausführungsbeispiel  ist in die Stirnfläche des massiven Läufer  körpers 1, wie die Fig. 1a zeigt, eine Ring  nut 2 so gedreht, dass die Löcher 3 (Fig. 1c)  für die Kurzschlussstäbe 4 am Grunde der  Ringnut 2 münden. Daraufhin werden die  Kurzschlussstäbe 4 so eingezogen, dass ihre  Enden um einen kleinen Betrag in die Ring  nut 2 hineinragen.

   Der Kurzschlussring, zum  Beispiel aus Kupfer, wird dann dadurch  hergestellt, dass     -mit    Hilfe des elektrischen  Schweissens als Auftragsschweissung der Kup  ferwerkstoff in die Nut 2 eingeschmolzen  wird, wobei die Enden der Kurzschlussstäbe  4 mit dem Werkstoff des Kurzschlussringes  5     verschmelzen.     



  Bei dem in der Fig. 2 dargestellten Aus  führungsbeispiel ist die Ringnut 2, da der     41     Läufer 6     lamelliert    ist, in der massiven  Pressplatte 7 eingedreht. Die Kurzschlussstäbe  4 und der     Kurzschlussring    5 sind im übrigen       in    der gleichen Weise in die Löcher 3,     bezw.         in die Ringhut 2 eingebracht, wie bei dein  Ausführungsbeispiel der Fig. 1.



  '' Method of manufacturing an induction motor with a squirrel cage rotor for high speeds. For some purposes, induction motors with squirrel cage rotors for high speeds are required today, that is, motors whose speeds are over 3000 rpm and range up to 40,000 rpm with considerable powers. The production of the cage winding, especially the short-circuit rings, made so far in such induction motors considerable difficulties because of the high centrifugal force stresses that occur in the short-circuit wrestles.



  The invention relates to a method for producing a motor mentioned at the beginning and eliminates these difficulties in that the short-circuit rings are introduced into annular grooves provided on the end faces of the rotor by electrical build-up welding.



  The invention will be explained with reference to two exemplary embodiments of motors shown in the drawing, of which only one end face is drawn. In the embodiment shown in FIG. 1, an annular groove 2 is rotated in the end face of the solid rotor body 1, as shown in FIG. 1a, so that the holes 3 (FIG. 1c) for the short-circuit rods 4 at the bottom of the annular groove 2 open. The short-circuit rods 4 are then drawn in such that their ends protrude into the ring groove 2 by a small amount.

   The short-circuit ring, for example made of copper, is then produced in that the copper material is melted into the groove 2 with the help of electrical welding as build-up welding, the ends of the short-circuit rods 4 fusing with the material of the short-circuit ring 5.



  In the exemplary embodiment shown in FIG. 2, the annular groove 2 is screwed into the solid press plate 7, since the rotor 6 is laminated. The short-circuit rods 4 and the short-circuit ring 5 are otherwise in the same way in the holes 3, respectively. introduced into the ring hat 2, as in the exemplary embodiment in FIG. 1.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Induk tionsmotors mit Käfigläufer für hohe Dreh zahlen, dadurch gekennzeichnet, dass die Kurz schlussringe in an den Stirnseiten des Läufers vorgesehene Ringnuten durch elektrische Auf tragsschweissung eingebracht werden. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass die in die Ringnut hin einragenden Enden der Kurzschlussstäbe beim Aufschweissen des Kurzschlussringes mit diesem verschweisst werden. PATENT CLAIM: A method for producing an induction motor with a squirrel cage rotor for high speeds, characterized in that the short-circuit rings are introduced into annular grooves provided on the end faces of the rotor by electrical welding. SUBSTANTIAL CLAIM: Method according to patent claim, characterized in that the ends of the short-circuit rods protruding into the annular groove are welded to the short-circuit ring when the short-circuit ring is welded on.
CH232999D 1942-03-25 1943-02-20 Process for the production of an induction motor with a squirrel cage rotor for high speeds. CH232999A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE232999X 1942-03-25

Publications (1)

Publication Number Publication Date
CH232999A true CH232999A (en) 1944-06-30

Family

ID=5883830

Family Applications (1)

Application Number Title Priority Date Filing Date
CH232999D CH232999A (en) 1942-03-25 1943-02-20 Process for the production of an induction motor with a squirrel cage rotor for high speeds.

Country Status (1)

Country Link
CH (1) CH232999A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1028674B (en) * 1954-05-15 1958-04-24 C O Oeberg & Co S A B Fabrikan Short circuit runners, especially for small and micro motors
EP0786855A4 (en) * 1995-07-13 1998-11-04 Fanuc Ltd CAGE RUNNER
WO2007000429A1 (en) * 2005-06-29 2007-01-04 Siemens Aktiengesellschaft Rotor of an asynchronous machine
US7919895B2 (en) 2005-06-29 2011-04-05 Siemens Aktiengesellschaft Squirrel-cage rotor of an asynchronous machine
WO2016055186A1 (en) * 2014-10-07 2016-04-14 Robert Bosch Gmbh Squirrel-cage rotor for an asynchronous electric machine having a support disk that stabilizes a short-circuit ring
WO2019149430A1 (en) * 2018-01-30 2019-08-08 Siemens Aktiengesellschaft Short-circuit ring for connecting to cage bars
WO2019166554A3 (en) * 2018-03-01 2019-11-07 Thyssenkrupp Ag Rotor, asynchronous machine and use of a pressure disc

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1028674B (en) * 1954-05-15 1958-04-24 C O Oeberg & Co S A B Fabrikan Short circuit runners, especially for small and micro motors
EP0786855A4 (en) * 1995-07-13 1998-11-04 Fanuc Ltd CAGE RUNNER
US5952764A (en) * 1995-07-13 1999-09-14 Fanuc, Ltd. Cage rotor having reinforcing members that prevent deformation of end rings at moderately high rotation speeds
WO2007000429A1 (en) * 2005-06-29 2007-01-04 Siemens Aktiengesellschaft Rotor of an asynchronous machine
US7919895B2 (en) 2005-06-29 2011-04-05 Siemens Aktiengesellschaft Squirrel-cage rotor of an asynchronous machine
WO2016055186A1 (en) * 2014-10-07 2016-04-14 Robert Bosch Gmbh Squirrel-cage rotor for an asynchronous electric machine having a support disk that stabilizes a short-circuit ring
WO2019149430A1 (en) * 2018-01-30 2019-08-08 Siemens Aktiengesellschaft Short-circuit ring for connecting to cage bars
CN111656654A (en) * 2018-01-30 2020-09-11 西门子股份公司 Shorting ring for connection to cage bars
WO2019166554A3 (en) * 2018-03-01 2019-11-07 Thyssenkrupp Ag Rotor, asynchronous machine and use of a pressure disc

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