JPS6157086A - Magnetic disk device - Google Patents
Magnetic disk deviceInfo
- Publication number
- JPS6157086A JPS6157086A JP17862684A JP17862684A JPS6157086A JP S6157086 A JPS6157086 A JP S6157086A JP 17862684 A JP17862684 A JP 17862684A JP 17862684 A JP17862684 A JP 17862684A JP S6157086 A JPS6157086 A JP S6157086A
- Authority
- JP
- Japan
- Prior art keywords
- track
- magnetic disk
- head
- zero
- magnetic
- 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
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B5/60—Fluid-dynamic spacing of heads from record-carriers
- G11B5/6005—Specially adapted for spacing from a rotating disc using a fluid cushion
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
Landscapes
- Supporting Of Heads In Record-Carrier Devices (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は回転型アクチュエータを有する磁気ディスク装
置に係わり、特に磁気ヘッドのシーク時に生じるヘッド
の浮上量変動の影響を軽減し、信顛性を向上した磁気デ
ィスク装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic disk device having a rotary actuator, and in particular, to reducing the influence of fluctuations in the flying height of a head that occur when the magnetic head seeks, thereby improving reliability. This invention relates to an improved magnetic disk device.
磁気デ、イスク装置は計算機用周辺記憶装置としての役
割を果たしており、高速回転している磁気ディスク上に
微少な間隙を保って磁気ヘッドを保持し、同心円状の多
数のトラックに情報を記録す５ る装置である。Magnetic disc devices play the role of peripheral storage devices for computers. They hold a magnetic head with a small gap between them on a high-speed rotating magnetic disk, and record information on a large number of concentric tracks. 5.
上記磁気ヘッドは磁気ディスクの回転により浮上し、読
み（リード）／書き（ライト）を行うが、磁気ディスク
装置の高密度化に伴い磁気ヘッドの浮上量が小さく設定
されるに従い、ヘッドクラッシュを起し易くなるので、
ヘッドクラシソシュを起さなし、）ような磁気ヘッドが
要望されている。The above-mentioned magnetic head levitates as the magnetic disk rotates and performs reading/writing, but as magnetic disk drives become more dense and the flying height of the magnetic head is set smaller, head crashes occur. Because it becomes easier to
There is a demand for a magnetic head that does not cause head crash.
〔従来の技術〕 １
磁気ディスク装置は、例えば第２図に示すように、モー
タ１を有烹るスピンドル２により回転する磁気ディスク
３とヘッド駆動用の回転型アクチュエータ４に取付けら
れたアーム５と該アーム５にジンバルバネ６を介して支
持された磁気ヘッド７より構成される。なお、８はベー
ス、９はアームを回転させる回転軸である。[Prior Art] 1. As shown in FIG. 2, for example, a magnetic disk drive consists of a magnetic disk 3 rotated by a spindle 2 having a motor 1, and an arm 5 attached to a rotary actuator 4 for driving a head. It consists of a magnetic head 7 supported by the arm 5 via a gimbal spring 6. Note that 8 is a base, and 9 is a rotation axis for rotating the arm.
上記磁気ディスク装置は磁気ヘッド７を搭載したアーム
５′が第３図（イ）に示すように回転軸９を支点として
、回転し、磁気ヘッド７を磁気ディスク３の半径方向に
移動させ所定トラ・ツクに位置づけさせる構造となって
いる。In the above-mentioned magnetic disk device, an arm 5' carrying a magnetic head 7 rotates about a rotating shaft 9 as a fulcrum, as shown in FIG.・It has a structure that allows Tsuku to position it.
上記回転型アクチュエータ４は回転軸９を中心に回転し
、直進型アクチュエータのように前進がないので小型、
軽量に出来るという特長がある反面、ヨー角（円周方向
のトラックの接線とへ・ノドスライダとの角）θが半径
位置によって、第３図（イ）に示す如くθが中央でＯ１
最アウタでθ。The rotary actuator 4 rotates around a rotating shaft 9 and does not move forward like a linear actuator, so it is small and
Although it has the advantage of being lightweight, the yaw angle (the angle between the tangent of the track in the circumferential direction and the heel/nod slider) depends on the radial position, and as shown in Figure 3 (a), θ is O1 at the center.
θ at the outermost position.
最インナーで−θと変動する問題がある。There is a problem in that it fluctuates to -θ at the innermost position.
このヨー角θの変動により第３図（イ） （ロ）に示す
りに磁気ヘッド７のス′ライダ１０へ入力する空気量が
異なり、このため、ヘッドの浮上量は第４図の如く中央
のヨー角が０度の所で最も高く、インナー、アウタのヨ
ー角がずれ大きくなる所で浮上量が低下する現象がある
。なお、１）はコア、１２はコイルである。Due to this variation in the yaw angle θ, the amount of air input to the slider 10 of the magnetic head 7 changes as shown in FIGS. There is a phenomenon in which the flying height is highest when the yaw angle of the inner and outer parts is 0 degrees, and the flying height decreases where the yaw angles of the inner and outer parts become more misaligned. Note that 1) is a core, and 12 is a coil.
このためトラック領ｔ！ｆ（Ｌ）でこの変動を最も小さ
くするため第５図の如くトラック領域りのは・′中央に
ヨー角０度にすることが行われている。For this reason, truck territory t! In order to minimize this variation in f(L), the yaw angle is set to 0 degrees at the center of the track area as shown in FIG.
又磁気ディスク装置において、使用開始時に磁気ディス
クが回転を始め、規定回転数に達した時点で磁気ヘッド
がトラック０に位置付けられ、０トラツクから使われる
ので、使用頻度が最も高くなる。この最も使用頻度の高
いトラック０の位置が第５図のように磁気ディスク３の
最インナー、又は最アウタに設けられているため、ヨー
角のずれる浮上量マージンの少ない領域において、浮上
している時間が長いので、磁気ディスクとの接触により
ヘッドクラッシュの危険性が高いと云う問題点があった
。In addition, in a magnetic disk device, when the magnetic disk starts to be used, the magnetic disk starts rotating, and when it reaches a specified number of rotations, the magnetic head is positioned at track 0, and the magnetic head is used from track 0, so that the frequency of use is the highest. Since the most frequently used track 0 is located at the innermost or outermost position of the magnetic disk 3 as shown in FIG. Since the time is long, there is a problem that there is a high risk of head crash due to contact with the magnetic disk.
上記従来の問題点は、磁気ディスクの使用頻度の高いト
ラック位置における磁気ヘッドのスライダと円周方向の
トラックの接線となす角をほぼ０度とし、さらにその位
置をトラックＯとする本発明の磁気ディスク装置によっ
て解決される。The problem with the conventional method is that the angle between the tangent between the slider of the magnetic head and the track in the circumferential direction at a frequently used track position of the magnetic disk is approximately 0 degrees, and that position is track O. Solved by disk device.
即ち、磁気ディスクの１ラツク領域のＬｉ、ぼ中央にヨ
ー角０度とし、さらにそめ位置を最も使用頻度の高いト
ラック０とし、浮上量のマージンの多い領域での磁気ヘ
ッドの浮上している時間が長くなるようにすることによ
りヘッドクラッシュの危 ・険を防ぐようにした。
□
〔実施例〕 □
以下、本発明の要旨を図面により具体的に説明する。In other words, the yaw angle is set to 0 degrees at the center of Li of one rack area of the magnetic disk, and the track 0, which is the most frequently used position, is set aside, and the flying time of the magnetic head in the area with a large flying height margin is calculated. By making the head longer, the risk of head crash is prevented.
□ [Example] □ The gist of the present invention will be specifically explained below with reference to the drawings.
第１図は本発明の一実施例を説明する図である。FIG. 1 is a diagram illustrating an embodiment of the present invention.
第１図において、磁気ディスク３の使用頻度の高いトラ
ックをヨー角０度近傍位置に割当てる。即ち、第４図に
示すトラック領域りのほぼ中央にヨー角０度の位置が設
定されるが、トラックは第５図に示す従来のように最イ
ンナーより０トラツク。In FIG. 1, frequently used tracks on the magnetic disk 3 are assigned to positions near a yaw angle of 0 degrees. That is, the position of the yaw angle of 0 degrees is set approximately at the center of the track area shown in FIG. 4, but the track is 0 from the innermost track as in the conventional case shown in FIG.
１トラック、２トラツク、−−−−−−−と□割当るの
でなく、使用頻度の高いＯトラックをトラック領域のほ
ぼ中央に割当て、１−ラック１．トラック２ 、−−−
−−を任意の形で割当てる。例えば図朱のようにアウタ
。Rather than assigning 1 track, 2 tracks, etc., the frequently used O track is assigned to approximately the center of the track area, and 1-rack 1. Track 2, ---
--assign in any form. For example, outerwear like Zushu.
インナー交互にトラック番号を割当てる。Assign track numbers to inner alternates.
上記のように使用頻度の高いトラックを成るべくヨー角
の小さい０近傍の位置とすることにより磁気ヘッドが浮
上マージンの大きい所に長く位置するので、ヘッドクラ
ッシュ等の危険性がなくな以上説明したように、′、本
発明によれば使用頻度の高いトラックを成るべくヨー角
の小さいＯ近傍に位置させ、浮上マージンを持たせヘッ
ドクラッシュをなくすようにし、磁気へラドシーク時に
生じる。ヘッドの浮上！、変動の影響を軽減し、信頼性
を向上した磁気ディスク装置が得られる。As mentioned above, by setting the frequently used track to a position where the yaw angle is as small as possible near 0, the magnetic head can be located in a place with a large flying margin for a long time, eliminating the risk of head crash etc. According to the present invention, frequently used tracks are located near O where the yaw angle is as small as possible, and a flying margin is provided to eliminate head crashes that occur during magnetic helical seek. Levitation of the head! , a magnetic disk device with reduced influence of fluctuations and improved reliability can be obtained.
第１図は本発明の一実施例を説明する図、第２図は磁気
ディスク装置の概略図、
第３図（イ）は回転型アクチュエータの動作説明図、第
３図（ロ）は磁気ヘッドの側面図、第３図（ハ）は第３
図（ロ）の平面図、
第４図はヘッド変動による浮上量の変動を説明する図、
第５図は従来のトラック領域のヨーク角と１−ランク割
付を示す図である。
図において、
２は磁気ディスク、
３はスンドルを示す。
第１ 図
第２図Figure 1 is a diagram explaining one embodiment of the present invention, Figure 2 is a schematic diagram of a magnetic disk device, Figure 3 (a) is a diagram explaining the operation of a rotary actuator, and Figure 3 (b) is a diagram of a magnetic head. The side view of Figure 3 (c) is the side view of the
FIG. 4 is a diagram illustrating fluctuations in flying height due to head fluctuations, and FIG. 5 is a diagram illustrating conventional track area yoke angles and 1-rank assignments. In the figure, 2 indicates a magnetic disk and 3 indicates a sundr. Figure 1 Figure 2
Claims (2)
ヘッドを磁気ディスク上の所定トラックに位置決めして
読み／書きする磁気ディスク装置において、前記磁気デ
ィスクの使用頻度の高いトラック位置における磁気ヘッ
ドのスライダと円周方向のトラックの接線となす角（ヨ
ー角）をほぼ０度とすることを特徴とする磁気ディスク
装置。(1) In a magnetic disk device in which a magnetic head held by an arm of a rotary actuator is positioned on a predetermined track on a magnetic disk to read/write, the slider of the magnetic head is positioned at a frequently used track position on the magnetic disk. A magnetic disk device characterized in that an angle (yaw angle) formed with a tangent to a track in a circumferential direction is approximately 0 degrees.
の接線となす角（ヨー角）は０度付近の位置をトラック
０と割りつけることを特徴とする特許請求の範囲第１項
記載の磁気ディスク装置。(2) The magnetism according to claim 1, wherein the angle (yaw angle) formed by the tangent between the slider of the magnetic head and the track in the circumferential direction is assigned a position near 0 degrees as track 0. disk device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17862684A JPS6157086A (en) | 1984-08-28 | 1984-08-28 | Magnetic disk device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17862684A JPS6157086A (en) | 1984-08-28 | 1984-08-28 | Magnetic disk device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6157086A true JPS6157086A (en) | 1986-03-22 |
Family
ID=16051739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17862684A Pending JPS6157086A (en) | 1984-08-28 | 1984-08-28 | Magnetic disk device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6157086A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008307909A (en) * | 2007-06-12 | 2008-12-25 | Toyota Auto Body Co Ltd | Rear spoiler for automobile |
-
1984
- 1984-08-28 JP JP17862684A patent/JPS6157086A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008307909A (en) * | 2007-06-12 | 2008-12-25 | Toyota Auto Body Co Ltd | Rear spoiler for automobile |
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