JPS64716A - Method and device for manufacturing multipolar magnet - Google Patents

Method and device for manufacturing multipolar magnet

Info

Publication number
JPS64716A
JPS64716A JP18368587A JP18368587A JPS64716A JP S64716 A JPS64716 A JP S64716A JP 18368587 A JP18368587 A JP 18368587A JP 18368587 A JP18368587 A JP 18368587A JP S64716 A JPS64716 A JP S64716A
Authority
JP
Japan
Prior art keywords
magnetization
magnetic
currents
command signal
material molded
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
JP18368587A
Other languages
Japanese (ja)
Other versions
JPH01716A (en
Inventor
Kazuhiko Muya
Yukio Nakajima
Isamu Koyama
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.)
Resonac Corp
Original Assignee
Shin Kobe Electric Machinery 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 Shin Kobe Electric Machinery Co Ltd filed Critical Shin Kobe Electric Machinery Co Ltd
Priority to JP18368587A priority Critical patent/JPS64716A/en
Publication of JPH01716A publication Critical patent/JPH01716A/en
Publication of JPS64716A publication Critical patent/JPS64716A/en
Pending legal-status Critical Current

Links

Landscapes

  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

PURPOSE: To apply and annihilate a magnetic field for magnetization at the starting point and end point of magnetization slowly by periodically varying the peak value of currents for magnetization every time a magnetic-material molded form to be magnetized makes at least one revolution or more and bringing a varying period to the non-integral times of the period of revolution of said magnetic-material molded form.
CONSTITUTION: A magnetic-material molded form 1 is formed to a cylindrical shape, and a shaft 10 is turned in sixty rpm by a motor 2. An encoder 4 produces four synchronizing pluses (q) per revolution, and a frequency dividing circuit 5 outputs a peak-value change command signal (b) for every five input pluses-that is, for every 1.25 revolutions. A magnetizing power 6 is controlled by the command signal (b), and generates output currents C, which are controlled by the command signal (b) and magnitude of which is increased by stages at every 1.25sec and reduced. A magnetizing pulse generating circuit 7 intermittently controls the output currents C by a pole control signal (p) from the encoder 3 and changes the output current C into pulse currents, and a current forming means 8 for magnetization outputs current (i) for magnetization, which have pulse number corresponding to magnetizing poles and peak value of which is increased by stages and diminished.
COPYRIGHT: (C)1989,JPO&Japio
JP18368587A 1987-03-30 1987-07-24 Method and device for manufacturing multipolar magnet Pending JPS64716A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18368587A JPS64716A (en) 1987-03-30 1987-07-24 Method and device for manufacturing multipolar magnet

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP62-76841 1987-03-30
JP7684187 1987-03-30
JP18368587A JPS64716A (en) 1987-03-30 1987-07-24 Method and device for manufacturing multipolar magnet

Publications (2)

Publication Number Publication Date
JPH01716A JPH01716A (en) 1989-01-05
JPS64716A true JPS64716A (en) 1989-01-05

Family

ID=26417959

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18368587A Pending JPS64716A (en) 1987-03-30 1987-07-24 Method and device for manufacturing multipolar magnet

Country Status (1)

Country Link
JP (1) JPS64716A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101104464B1 (en) * 2009-10-07 2012-01-12 이민성 Ball Contact type Bearing and Support Structure for Vertical Shaft

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101104464B1 (en) * 2009-10-07 2012-01-12 이민성 Ball Contact type Bearing and Support Structure for Vertical Shaft

Similar Documents

Publication Publication Date Title
JPS5251512A (en) Motor with frequency generator
AU5671186A (en) Permanent magnet variable reluctance generator
DE3563568D1 (en) Method and apparatus to recognise the position of the rotor of a stepping motor
JPS5622600A (en) Controlling method for excitation of generator
JPS53147219A (en) Brushless direct current linear motor
JPS64716A (en) Method and device for manufacturing multipolar magnet
ES477691A1 (en) Motor control circuits
JPS57156662A (en) Super-miniaturized two-way rotation stepping motor
GB1206429A (en) Improvements in or relating to electric stepping motors
SU1182584A1 (en) Method of magnetizing multipole rotors of electric machines with permanent magnets
JPS54134313A (en) Pulse motor for electronic clock
JPS5543902A (en) Pulse motor
JPS5453204A (en) Frequency generator
RU2016472C1 (en) Method of control over d c thyratron motor
JPS54717A (en) Motor
RU2016474C1 (en) Method of control over d c thyratron motor
JPS56129587A (en) Controlling device for brushless motor
JPS55127874A (en) Neutral point adjusting method for motor
RU2016473C1 (en) Method of control over d c thyratron motor
SU957364A1 (en) One-phase stepping motor
SU957363A1 (en) One-phase stepping motor
SU450323A1 (en) Shaper of rectangular pulses of adjustable duration
SU1078373A1 (en) Apparatus for magnetizing and demagnetizing ferromagnetic materials
JPS5728595A (en) Revolution number controlling system for direct current motor
JPS5796264A (en) Speed detector for commutator-less motor