JPS6450910A - Magnetic encoder - Google Patents

Magnetic encoder

Info

Publication number
JPS6450910A
JPS6450910A JP20645187A JP20645187A JPS6450910A JP S6450910 A JPS6450910 A JP S6450910A JP 20645187 A JP20645187 A JP 20645187A JP 20645187 A JP20645187 A JP 20645187A JP S6450910 A JPS6450910 A JP S6450910A
Authority
JP
Japan
Prior art keywords
tooth
gear
teeth
phase
integrally
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
JP20645187A
Other languages
Japanese (ja)
Inventor
Kenichi Tamura
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.)
Tamagawa Seiki Co Ltd
Original Assignee
Tamagawa Seiki 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 Tamagawa Seiki Co Ltd filed Critical Tamagawa Seiki Co Ltd
Priority to JP20645187A priority Critical patent/JPS6450910A/en
Publication of JPS6450910A publication Critical patent/JPS6450910A/en
Pending legal-status Critical Current

Links

Landscapes

  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

PURPOSE:To make the weight of a gear light to reduce a rotational inertia force and thereby to improve precision in the phase of a mark pulse, by forming a tooth for the mark pulse on one of gears for detection integrally in extension in the axial direction CONSTITUTION:A gear 4 for detection having many teeth 3 and made of a magnetic material is fixed integrally to the rotating shaft 2 of a driving motor 1. On a specified tooth 3a out of these teeth 3, a tooth 5a for a mark pulse extending integrally in the axial direction and in the lateral direction of the gear 4 is formed. This tooth 5a is formed in such a manner that the teeth 3 of a width W is formed on the gear 4 and a part of a width W' is cut and removed therefrom. When the rotating shaft 2 rotates in prescribed numbers with the operation of the motor 1, a couple of count signals corresponding to each of the teeth 3 and being different in phase are obtained from a first magnetism detector 6a. From a second magnetism detector 6b, a couple of mark pulses corresponding to the tooth 5a and being different in phase are obtained.
JP20645187A 1987-08-21 1987-08-21 Magnetic encoder Pending JPS6450910A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20645187A JPS6450910A (en) 1987-08-21 1987-08-21 Magnetic encoder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20645187A JPS6450910A (en) 1987-08-21 1987-08-21 Magnetic encoder

Publications (1)

Publication Number Publication Date
JPS6450910A true JPS6450910A (en) 1989-02-27

Family

ID=16523591

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20645187A Pending JPS6450910A (en) 1987-08-21 1987-08-21 Magnetic encoder

Country Status (1)

Country Link
JP (1) JPS6450910A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007285741A (en) * 2006-04-13 2007-11-01 Tdk Corp Rotation detection device
CN100362322C (en) * 2004-06-24 2008-01-16 发那科株式会社 Magnetic type angle sensor
WO2012014697A1 (en) * 2010-07-30 2012-02-02 Thk株式会社 Encoder and actuator
DE102014007912B4 (en) 2013-05-29 2018-04-26 Fanuc Corporation A rotation detector for determining the rotational movement of a rotating machine and equipped with a rotation detector device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100362322C (en) * 2004-06-24 2008-01-16 发那科株式会社 Magnetic type angle sensor
US7400141B2 (en) * 2004-06-24 2008-07-15 Fanuc Ltd Magnetic type angle sensor
JP2007285741A (en) * 2006-04-13 2007-11-01 Tdk Corp Rotation detection device
WO2012014697A1 (en) * 2010-07-30 2012-02-02 Thk株式会社 Encoder and actuator
DE102014007912B4 (en) 2013-05-29 2018-04-26 Fanuc Corporation A rotation detector for determining the rotational movement of a rotating machine and equipped with a rotation detector device

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