JPS55144759A - Manufacturing method for rotor of step motor for clock - Google Patents

Manufacturing method for rotor of step motor for clock

Info

Publication number
JPS55144759A
JPS55144759A JP5107779A JP5107779A JPS55144759A JP S55144759 A JPS55144759 A JP S55144759A JP 5107779 A JP5107779 A JP 5107779A JP 5107779 A JP5107779 A JP 5107779A JP S55144759 A JPS55144759 A JP S55144759A
Authority
JP
Japan
Prior art keywords
rotor
belt material
perforated
detached
clock
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
JP5107779A
Other languages
Japanese (ja)
Inventor
Hironori Nomura
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch 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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP5107779A priority Critical patent/JPS55144759A/en
Publication of JPS55144759A publication Critical patent/JPS55144759A/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
    • H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
    • H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/2726—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of a single magnet or two or more axially juxtaposed single magnets
    • H02K1/2733—Annular magnets

Landscapes

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

Abstract

PURPOSE:To obtain such a rotor as is minimized for moment of inertia and reduced for assembling process by a method wherein a rotor magnet and a rotor shaft are attached to a rotor seat formed throgh forward feed system as a belt material and then detached from the belt material. CONSTITUTION:A pilot hole 5 for process locating and an escape hole 6 for drawing are perforated in a belt material 4 consisting of soft metallic material or plastic material 50-100mum, a drawing is then carried out and a small hole 7 is perforated therein at the center. Next, the small hole 7 is depressed through burring process to form a cylindrical projection 8, thus obtaning a rotor seat 2. Then, a rotor magnet 1 is fitted in the rotor seat 2, and a rotor shaft 3 is also attached. Finally the rotor is detached from the belt material 4 to obtain a product.
JP5107779A 1979-04-25 1979-04-25 Manufacturing method for rotor of step motor for clock Pending JPS55144759A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5107779A JPS55144759A (en) 1979-04-25 1979-04-25 Manufacturing method for rotor of step motor for clock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5107779A JPS55144759A (en) 1979-04-25 1979-04-25 Manufacturing method for rotor of step motor for clock

Publications (1)

Publication Number Publication Date
JPS55144759A true JPS55144759A (en) 1980-11-11

Family

ID=12876739

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5107779A Pending JPS55144759A (en) 1979-04-25 1979-04-25 Manufacturing method for rotor of step motor for clock

Country Status (1)

Country Link
JP (1) JPS55144759A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7296781B2 (en) 2004-09-27 2007-11-20 Keihin Corporation Electromagnetic fuel injection valve

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7296781B2 (en) 2004-09-27 2007-11-20 Keihin Corporation Electromagnetic fuel injection valve
CN100387826C (en) * 2004-09-27 2008-05-14 株式会社京浜 Electromagnet type fuel injection valve

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