JPS6417272A - Head moving device - Google Patents

Head moving device

Info

Publication number
JPS6417272A
JPS6417272A JP17276287A JP17276287A JPS6417272A JP S6417272 A JPS6417272 A JP S6417272A JP 17276287 A JP17276287 A JP 17276287A JP 17276287 A JP17276287 A JP 17276287A JP S6417272 A JPS6417272 A JP S6417272A
Authority
JP
Japan
Prior art keywords
feeding
amt
linear cam
advance
linearity
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
JP17276287A
Other languages
Japanese (ja)
Inventor
Masaki Yono
Katsuo Usui
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP17276287A priority Critical patent/JPS6417272A/en
Publication of JPS6417272A publication Critical patent/JPS6417272A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/08—Track changing or selecting during transducing operation

Landscapes

  • Moving Of The Head To Find And Align With The Track (AREA)

Abstract

PURPOSE:To increase a track feeding accuracy and to enable a high speed feeding even using a linear cam of bad accuracy by detecting the sipping amt. in advance from the linearity of the linear cam by a forming part and correcting the slipping amt. by the number of steps in the feeding of a stepping motor. CONSTITUTION:In the linear cam 1 of a forming part, the slippage from a linearity shows the similar trend in the case of using the same die and the amt. thereof becomes equal approximately. The slipping amt. is measured in advance by the measuring device such as laser micrometer, etc., to grasp the trend and slippage of the linear cam and based on these data the feeding amt. showing the linearity by the linear cam 1 is calculated and inputted into a microcomputer 8. A stepping motor 3 is used for feeding to execute a cam feeding according to the number of steps inputted in advance. The track feeding of high accuracy is thus enabled without necessitating the use of a high positioning sensor.
JP17276287A 1987-07-13 1987-07-13 Head moving device Pending JPS6417272A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17276287A JPS6417272A (en) 1987-07-13 1987-07-13 Head moving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17276287A JPS6417272A (en) 1987-07-13 1987-07-13 Head moving device

Publications (1)

Publication Number Publication Date
JPS6417272A true JPS6417272A (en) 1989-01-20

Family

ID=15947864

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17276287A Pending JPS6417272A (en) 1987-07-13 1987-07-13 Head moving device

Country Status (1)

Country Link
JP (1) JPS6417272A (en)

Similar Documents

Publication Publication Date Title
MX160172A (en) IMPROVEMENTS IN METHOD AND APPARATUS OF CONTROL OF TICKET MANAGEMENT
DE3882612D1 (en) INCREMENTAL LENGTH OR ANGLE MEASURING DEVICE.
JPS6417272A (en) Head moving device
DE3069083D1 (en) Process for incrementally measuring geometrical dimensions, and devices to perform the process
EP1074395A3 (en) Recording Apparatus
JPS6446808A (en) Correcting system for position shift of commodity transfer device
JPS52101065A (en) Magnetic scale
JPS5323657A (en) High precision length measurilng system o f filament materials
JPS6486355A (en) Cassette autochanger
JPS6472873A (en) Registering method for belt-shaped film
JPS6416354A (en) Tool diameter measuring method
KR910006970B1 (en) System for feeding and positioning articles being processed
JPS52114349A (en) Optical sensor
JPS6466501A (en) Thickness measurement of insb single crystal wafer for compound substrate
JPS57151260A (en) Linear step motor
ATE83462T1 (en) CONTROL DEVICE FOR CONVEYOR SYSTEMS.
DE3879942D1 (en) DISTANCE MEASUREMENT ARRANGEMENT AND METHOD.
JPS5242746A (en) Process for assorting the kind of automobiles
JPS5728204A (en) Measuring method for object moving continuously
JPS6454576A (en) Automatic reading method for time chart
JPS57196315A (en) Automatic compensating device of backlash amount
EP0184637A3 (en) Process for the manufacture of a magnetic switch element which will demagnetize fast also in a slowly changing magnetic field
JPS5288904A (en) Apparatus for stopping vehicle at constant position
JPS5693004A (en) Setting method for origin in three-dimension measurement
JPS5333193A (en) Measuring apparatus of transformed quantity at diffusion welding