JPS55133655A - Manufacture of rotor of step motor for watch - Google Patents

Manufacture of rotor of step motor for watch

Info

Publication number
JPS55133655A
JPS55133655A JP4014179A JP4014179A JPS55133655A JP S55133655 A JPS55133655 A JP S55133655A JP 4014179 A JP4014179 A JP 4014179A JP 4014179 A JP4014179 A JP 4014179A JP S55133655 A JPS55133655 A JP S55133655A
Authority
JP
Japan
Prior art keywords
rotor
seat
small hole
cup
flange
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
JP4014179A
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 JP4014179A priority Critical patent/JPS55133655A/en
Publication of JPS55133655A publication Critical patent/JPS55133655A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • 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

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 a rotor which has small moment of inertia and excellent mass productivity by forming a rotor seat by which a rotor magnet comprising an intermetal compound is attached to a rotor shaft by drawing a sheet of thin light metal plate. CONSTITUTION:A positioning hole 5 for sequentially-moving continuous machining is provided and also a neighbouring spill port 6 is provided as preliminary machining through a thin plate 4 of light metal which has good malleability, e.g., aluminum, aluminum alloy, and the like. Then, a cup-shaped outer configuration is formed by sequential drawing. Thereafter, a small hole 7 is provided at the center of the bottom of the cup. The surrounding portion of said small hole is further drawn, and a flange 8 is formed. Finally, a rotor seat 3 is formed by taking out the outer configaration from the thin plate 4. then, a rotor magnet 1 comprising an intermetal compound is compressed into the rotor seat 3, and a rotor-rotating shaft 2 is compressed into the small hole 7 with the flange 8 in the rotor seat 3, thereby the rotor is completed.
JP4014179A 1979-04-03 1979-04-03 Manufacture of rotor of step motor for watch Pending JPS55133655A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4014179A JPS55133655A (en) 1979-04-03 1979-04-03 Manufacture of rotor of step motor for watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4014179A JPS55133655A (en) 1979-04-03 1979-04-03 Manufacture of rotor of step motor for watch

Publications (1)

Publication Number Publication Date
JPS55133655A true JPS55133655A (en) 1980-10-17

Family

ID=12572491

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4014179A Pending JPS55133655A (en) 1979-04-03 1979-04-03 Manufacture of rotor of step motor for watch

Country Status (1)

Country Link
JP (1) JPS55133655A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0365781A2 (en) * 1988-10-27 1990-05-02 Timex Corporation Stepping motor rotor assembly for an electronic timepiece

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0365781A2 (en) * 1988-10-27 1990-05-02 Timex Corporation Stepping motor rotor assembly for an electronic timepiece

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