JPS63182808A - Manufacture of magnet for magnetic encoder - Google Patents

Manufacture of magnet for magnetic encoder

Info

Publication number
JPS63182808A
JPS63182808A JP1499587A JP1499587A JPS63182808A JP S63182808 A JPS63182808 A JP S63182808A JP 1499587 A JP1499587 A JP 1499587A JP 1499587 A JP1499587 A JP 1499587A JP S63182808 A JPS63182808 A JP S63182808A
Authority
JP
Japan
Prior art keywords
magnetic
ring
cut
sufficient
magnet
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.)
Granted
Application number
JP1499587A
Other languages
Japanese (ja)
Other versions
JPH048926B2 (en
Inventor
Noriyuki Nagae
Toru Matsuura
Toji Kawamura
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.)
Yaskawa Electric Corp
Original Assignee
Yaskawa Electric Manufacturing 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 Yaskawa Electric Manufacturing Co Ltd filed Critical Yaskawa Electric Manufacturing Co Ltd
Priority to JP1499587A priority Critical patent/JPH048926B2/ja
Publication of JPS63182808A publication Critical patent/JPS63182808A/en
Publication of JPH048926B2 publication Critical patent/JPH048926B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To make a magnetic encoder small-sized with a sufficient flux used by a method wherein a ring magnetic plate is magnetized to a single polarity, the magnetic plate is cut into a ring shape and neighboring tracks are turned and deviated in the circumferential direction to obtain a sufficient magnetic flux. CONSTITUTION:A magnetic plate 4 consisting of a ring rubber magnetic material is inserted into a non-magnetic guide 3 to be fixed with a magnetic circuit tap 5. A coil to be magnetized is made conductive by a short-circuit current. After magnetization, an N pole and an S pole are formed on each semicircle, right and left. A magnetic plate 4 is cut by a cut-away line 6 to be divided into two ring magnets 4a and 4b and either of them, here the magnet 4b on the inner side is turned by 180 deg.. The magnets 4a and 4b are fixed with adhesives. Thereby, sufficient magnetic property can be obtained thus to be able to make a magnetic encoder small-sized.
JP1499587A 1987-01-23 1987-01-23 Expired - Lifetime JPH048926B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1499587A JPH048926B2 (en) 1987-01-23 1987-01-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1499587A JPH048926B2 (en) 1987-01-23 1987-01-23

Publications (2)

Publication Number Publication Date
JPS63182808A true JPS63182808A (en) 1988-07-28
JPH048926B2 JPH048926B2 (en) 1992-02-18

Family

ID=11876511

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1499587A Expired - Lifetime JPH048926B2 (en) 1987-01-23 1987-01-23

Country Status (1)

Country Link
JP (1) JPH048926B2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003025354A (en) * 2001-07-12 2003-01-29 Nok Corp Method for molding rubber composition, molded object comprising rubber composition, and magnetic encoder
EP1596202A1 (en) * 2004-05-14 2005-11-16 Schenck RoTec GmbH Method for the application of a magnetic marker on a rotatable object which is to be positioned and corresponding apparatus
WO2006067878A1 (en) * 2004-12-20 2006-06-29 Harmonic Drive Systems Inc. Method for magnetizing ring magnet and magnetic encoder
JP2010502214A (en) * 2006-09-08 2010-01-28 エスモ テクノロジーズ ピーティーイー リミテッド Device for treating perishable objects or liquids and method for manufacturing the same
JP2011033601A (en) * 2009-08-06 2011-02-17 Koyo Electronics Ind Co Ltd Method for fixing magnet in magnetic encoder and magnetic encoder using the same
US7896552B2 (en) 2005-03-18 2011-03-01 Johannes Heidenhain Gmbh Rotary encoder
JP2012242205A (en) * 2011-05-18 2012-12-10 Nsk Ltd Angle detection encoder and magnetization method for the same
CN111799056A (en) * 2020-08-13 2020-10-20 东莞金坤新材料股份有限公司 Magnetic body coplanar bipolar magnetizing device

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003025354A (en) * 2001-07-12 2003-01-29 Nok Corp Method for molding rubber composition, molded object comprising rubber composition, and magnetic encoder
US7505242B2 (en) 2004-05-14 2009-03-17 Schenck Rotec Gmbh Method for applying a magnetic mark to a rotatable article to be positioned and corresponding device
EP1596202A1 (en) * 2004-05-14 2005-11-16 Schenck RoTec GmbH Method for the application of a magnetic marker on a rotatable object which is to be positioned and corresponding apparatus
JP4698610B2 (en) * 2004-12-20 2011-06-08 株式会社ハーモニック・ドライブ・システムズ Method for magnetizing ring magnet and magnetic encoder
US7498914B2 (en) 2004-12-20 2009-03-03 Harmonic Drive Systems Inc. Method for magnetizing ring magnet and magnetic encoder
JPWO2006067878A1 (en) * 2004-12-20 2008-06-12 株式会社ハーモニック・ドライブ・システムズ Method for magnetizing ring magnet and magnetic encoder
WO2006067878A1 (en) * 2004-12-20 2006-06-29 Harmonic Drive Systems Inc. Method for magnetizing ring magnet and magnetic encoder
US7896552B2 (en) 2005-03-18 2011-03-01 Johannes Heidenhain Gmbh Rotary encoder
JP2010502214A (en) * 2006-09-08 2010-01-28 エスモ テクノロジーズ ピーティーイー リミテッド Device for treating perishable objects or liquids and method for manufacturing the same
JP4785091B2 (en) * 2006-09-08 2011-10-05 エスモ テクノロジーズ ピーティーイー リミテッド Device for treating perishable objects or liquids and method for manufacturing the same
JP2011033601A (en) * 2009-08-06 2011-02-17 Koyo Electronics Ind Co Ltd Method for fixing magnet in magnetic encoder and magnetic encoder using the same
JP2012242205A (en) * 2011-05-18 2012-12-10 Nsk Ltd Angle detection encoder and magnetization method for the same
CN111799056A (en) * 2020-08-13 2020-10-20 东莞金坤新材料股份有限公司 Magnetic body coplanar bipolar magnetizing device
CN111799056B (en) * 2020-08-13 2021-02-02 东莞金坤新材料股份有限公司 Magnetic body coplanar bipolar magnetizing device

Also Published As

Publication number Publication date
JPH048926B2 (en) 1992-02-18

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term