JPS5580855A - Rotary arm type positioning mechanism - Google Patents

Rotary arm type positioning mechanism

Info

Publication number
JPS5580855A
JPS5580855A JP15234778A JP15234778A JPS5580855A JP S5580855 A JPS5580855 A JP S5580855A JP 15234778 A JP15234778 A JP 15234778A JP 15234778 A JP15234778 A JP 15234778A JP S5580855 A JPS5580855 A JP S5580855A
Authority
JP
Japan
Prior art keywords
arm
centroid
shaft
force
coil
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
JP15234778A
Other languages
Japanese (ja)
Inventor
Minoru Fujino
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP15234778A priority Critical patent/JPS5580855A/en
Publication of JPS5580855A publication Critical patent/JPS5580855A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To ensure the high-accuracy positioning with the excellent quick-response properties by distributing the shaft and the coil constituting the driving means at such positions where the specific terms may be satisfied to the centroid of the arm.
CONSTITUTION: In case the rotation radius of the whole system of rotary arm 6 is refeered to as k with the centroid of G, shaft 4 and coil 5 constituting the driving means are distributed so that r1.r2=k may be satisfied, where r1 is the distance between the centroid and shaft 4 and r2 is the distance up to the point where centroid G and force F are applied. Thus arm 6 starts both the parallel-shift motion in the direction of positioning active force F and the rotary motion centering on centroid G and at G via force F which is generated from coil 5 and then applied to arm 6. And arm 6 becomes the immobile point to force F. As a result, the bearing drift of shaft 4 and the rigidity of the rotary arm can be ignored for the high frequency component with which the oscillation of the servo system becomes a problem.
COPYRIGHT: (C)1980,JPO&Japio
JP15234778A 1978-12-08 1978-12-08 Rotary arm type positioning mechanism Pending JPS5580855A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15234778A JPS5580855A (en) 1978-12-08 1978-12-08 Rotary arm type positioning mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15234778A JPS5580855A (en) 1978-12-08 1978-12-08 Rotary arm type positioning mechanism

Publications (1)

Publication Number Publication Date
JPS5580855A true JPS5580855A (en) 1980-06-18

Family

ID=15538545

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15234778A Pending JPS5580855A (en) 1978-12-08 1978-12-08 Rotary arm type positioning mechanism

Country Status (1)

Country Link
JP (1) JPS5580855A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5616969A (en) * 1979-06-04 1981-02-18 Microcomputer Syst Corp Head actuator assembly for fixed disk
JPS56163559A (en) * 1980-05-20 1981-12-16 Yokogawa Hokushin Electric Corp Actuator mechanism of magnetic disk device
JPS57133564A (en) * 1981-02-09 1982-08-18 Fujitsu Ltd Head positioning device
JPS59178630A (en) * 1983-03-29 1984-10-09 Toshiba Corp Optical pickup
JPS63191467U (en) * 1988-06-16 1988-12-09

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5616969A (en) * 1979-06-04 1981-02-18 Microcomputer Syst Corp Head actuator assembly for fixed disk
JPS56163559A (en) * 1980-05-20 1981-12-16 Yokogawa Hokushin Electric Corp Actuator mechanism of magnetic disk device
JPS57133564A (en) * 1981-02-09 1982-08-18 Fujitsu Ltd Head positioning device
JPS59178630A (en) * 1983-03-29 1984-10-09 Toshiba Corp Optical pickup
JPS63191467U (en) * 1988-06-16 1988-12-09
JPH039189Y2 (en) * 1988-06-16 1991-03-07

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