JPS5612844A - Squirrel-cage rotor core and manufacture thereof - Google Patents

Squirrel-cage rotor core and manufacture thereof

Info

Publication number
JPS5612844A
JPS5612844A JP8590979A JP8590979A JPS5612844A JP S5612844 A JPS5612844 A JP S5612844A JP 8590979 A JP8590979 A JP 8590979A JP 8590979 A JP8590979 A JP 8590979A JP S5612844 A JPS5612844 A JP S5612844A
Authority
JP
Japan
Prior art keywords
core
groove
cage rotor
coated
rotor core
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
Application number
JP8590979A
Other languages
Japanese (ja)
Inventor
Kazunobu Itomi
Hiroshi Doke
Kenji Ishihara
Sadaaki Mori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP8590979A priority Critical patent/JPS5612844A/en
Publication of JPS5612844A publication Critical patent/JPS5612844A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/0012—Manufacturing cage rotors

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Induction Machinery (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

PURPOSE:To greatly reduce a stray-load loss and provide an efficient squirrel-cage rotor core, by making the thickness of a coated insulating film on the inside surface of a bar casting groove large on the upper portion of the groove but small on its lower portion. CONSTITUTION:A core 5 is dipped in a solution of a heat-resisting insulating paint such as silicon resin so that the paint is coated on the entire surface of each groove 1. After the core is picked out of the solution, the core is put on rollers 10, 11. The driving roller 10 is slowly rotated in a direction A by a stepless transmission or the like so that the core 5 is rotated in a direction B and the coated film 6 on the surface of the groove 1 is moved toward the peripheral surface of the core 5 by the centrifugal force. The coated film is then dried by heating so that the thickness of the coated film is large and uniform at 8 on the upper portion 1a of each groove 1 but small at 9 on the lower portion 1b of the groove. This results in greatly reducing a stray-load loss and providing an efficient squirrel-cage rotor core.
JP8590979A 1979-07-09 1979-07-09 Squirrel-cage rotor core and manufacture thereof Pending JPS5612844A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8590979A JPS5612844A (en) 1979-07-09 1979-07-09 Squirrel-cage rotor core and manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8590979A JPS5612844A (en) 1979-07-09 1979-07-09 Squirrel-cage rotor core and manufacture thereof

Publications (1)

Publication Number Publication Date
JPS5612844A true JPS5612844A (en) 1981-02-07

Family

ID=13871942

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8590979A Pending JPS5612844A (en) 1979-07-09 1979-07-09 Squirrel-cage rotor core and manufacture thereof

Country Status (1)

Country Link
JP (1) JPS5612844A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003324862A (en) * 2002-04-26 2003-11-14 Nippon Steel Corp Rotary electric machine for vehicle and its manufacturing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003324862A (en) * 2002-04-26 2003-11-14 Nippon Steel Corp Rotary electric machine for vehicle and its manufacturing method

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