WO2011096005A1 - Procédé permettant de réaliser un paquet de tôles stator ou rotor pour une machine tournante électrique de taille importante - Google Patents

Procédé permettant de réaliser un paquet de tôles stator ou rotor pour une machine tournante électrique de taille importante Download PDF

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Publication number
WO2011096005A1
WO2011096005A1 PCT/IT2010/000040 IT2010000040W WO2011096005A1 WO 2011096005 A1 WO2011096005 A1 WO 2011096005A1 IT 2010000040 W IT2010000040 W IT 2010000040W WO 2011096005 A1 WO2011096005 A1 WO 2011096005A1
Authority
WO
WIPO (PCT)
Prior art keywords
pack
stator
electric rotating
making
strip
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.)
Ceased
Application number
PCT/IT2010/000040
Other languages
English (en)
Inventor
Pierino Felisa
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.)
Trancerie Emiliane SpA
Original Assignee
Trancerie Emiliane SpA
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 Trancerie Emiliane SpA filed Critical Trancerie Emiliane SpA
Priority to PCT/IT2010/000040 priority Critical patent/WO2011096005A1/fr
Publication of WO2011096005A1 publication Critical patent/WO2011096005A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/021—Magnetic cores
    • H02K15/026—Wound cores

Definitions

  • TITLE PROCESS FOR MAKING A STATOR OR ROTOR LAMINATION PACK FOR A LARGE ELECTRIC ROTATING MACHINE
  • the present invention relates to a process for forming a lamination pack for stators or rotors of electric machines such as alternators, motors, generators and electric rotating machines in general, particularly having large sizes.
  • the lamination pack is currently formed by punching circular sectors from the sheet metal strip or coil and later welding together the sectors.
  • the whole annulus is punched and the portion inside the annulus is recovered to obtain smaller-diameter laminations.
  • the main object of the present invention is to limit the off-cuts to the slot material, which may be achieved by linear punching of a rectilinear sheet metal strip.
  • a further object is to dramatically reduce the investments on plants and dies associated with varying diameters of stators and rotors.
  • Yet another object is to reduce the installed power for the equipment and thus achieve power savings with identical throughputs.
  • Figures 1 and 2 show a punching step according to the prior art
  • FIGS 3, 3a, 3b, 3c show the punching steps according to the present invention.
  • the punching operation is performed rectilinearly on the continuous strip 3, which has already been cut to a height corresponding to the difference between the inside and outside diameters of the stator pack.
  • the slot material is the only scrap that is created.
  • the rectilinear strip is continuously curved, to obtain circular laminations connected together into a pack of desired height.
  • Welds made along multiple generators of the pack will adequately maintain the laminations in contact with each other and ensure bonding therebetween.
  • the circle may be divided into sections in case of large diameters.
  • the number of sections will be defined by the transportation potential, the weight of the section being handled and by customer requirements, particularly in view of reducing assembly times and costs .
  • V-shaped cuts 4 have been formed.
  • These cuts 4 are formed during slot punching and are evenly arranged along the band opposite to that in which the slots have been formed.
  • a single punch press may be used for all diameters, and the slot dies will only need to be replaced.

Landscapes

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

Abstract

La présente invention trouve une application dans le domaine des machines tournantes électriques et a tout particulièrement trait à un procédé permettant de réaliser un paquet de tôles stator ou rotor pour une machine tournante électrique. Le procédé comprend une étape consistant à poinçonner une bande de tôle rectiligne et à courber ensuite ladite bande. La bande rectiligne peut être poinçonnée en continu ou en alternance.
PCT/IT2010/000040 2010-02-05 2010-02-05 Procédé permettant de réaliser un paquet de tôles stator ou rotor pour une machine tournante électrique de taille importante Ceased WO2011096005A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IT2010/000040 WO2011096005A1 (fr) 2010-02-05 2010-02-05 Procédé permettant de réaliser un paquet de tôles stator ou rotor pour une machine tournante électrique de taille importante

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2010/000040 WO2011096005A1 (fr) 2010-02-05 2010-02-05 Procédé permettant de réaliser un paquet de tôles stator ou rotor pour une machine tournante électrique de taille importante

Publications (1)

Publication Number Publication Date
WO2011096005A1 true WO2011096005A1 (fr) 2011-08-11

Family

ID=43827635

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2010/000040 Ceased WO2011096005A1 (fr) 2010-02-05 2010-02-05 Procédé permettant de réaliser un paquet de tôles stator ou rotor pour une machine tournante électrique de taille importante

Country Status (1)

Country Link
WO (1) WO2011096005A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55141958A (en) * 1979-04-24 1980-11-06 Matsushita Electric Ind Co Ltd Manufacture of wound iron core
US4395815A (en) * 1980-01-29 1983-08-02 Card-O-Matic Pty. Limited Method of making electric machines
US4403489A (en) * 1981-04-16 1983-09-13 Westinghouse Electric Corp. Strip winding machine and method
JPS6016159A (ja) * 1983-07-07 1985-01-26 Mitsubishi Electric Corp 回転電機の製造方法
US6147431A (en) * 1998-04-08 2000-11-14 Mitsubishi Denki Kabushiki Kaisha Stator core and method of manufacture therefor
EP1517427A2 (fr) * 2003-09-18 2005-03-23 Hitachi, Ltd. Paquet de tôle ainsi que procédé et machine de fabrication dudit paquet

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55141958A (en) * 1979-04-24 1980-11-06 Matsushita Electric Ind Co Ltd Manufacture of wound iron core
US4395815A (en) * 1980-01-29 1983-08-02 Card-O-Matic Pty. Limited Method of making electric machines
US4403489A (en) * 1981-04-16 1983-09-13 Westinghouse Electric Corp. Strip winding machine and method
JPS6016159A (ja) * 1983-07-07 1985-01-26 Mitsubishi Electric Corp 回転電機の製造方法
US6147431A (en) * 1998-04-08 2000-11-14 Mitsubishi Denki Kabushiki Kaisha Stator core and method of manufacture therefor
EP1517427A2 (fr) * 2003-09-18 2005-03-23 Hitachi, Ltd. Paquet de tôle ainsi que procédé et machine de fabrication dudit paquet

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