JPS61104472A - Disk device - Google Patents
Disk deviceInfo
- Publication number
- JPS61104472A JPS61104472A JP23926085A JP23926085A JPS61104472A JP S61104472 A JPS61104472 A JP S61104472A JP 23926085 A JP23926085 A JP 23926085A JP 23926085 A JP23926085 A JP 23926085A JP S61104472 A JPS61104472 A JP S61104472A
- Authority
- JP
- Japan
- Prior art keywords
- medium
- aggregate
- head
- force
- motion
- 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
- G11B21/00—Head arrangements not specific to the method of recording or reproducing
- G11B21/02—Driving or moving of heads
- G11B21/12—Raising and lowering; Back-spacing or forward-spacing along track; Returning to starting position otherwise than during transducing operation
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
- G11B19/02—Control of operating function, e.g. switching from recording to reproducing
- G11B19/04—Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
-
- 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
- G11B5/54—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 into or out of its operative position or across tracks
Landscapes
- Rotational Drive Of Disk (AREA)
- Supporting Of Heads In Record-Carrier Devices (AREA)
- Moving Of Heads (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は、ディスクメモリ装置に係り、特に該でいない
時にヘッドがディスク表面に接触するウィンチェスタを
のヘッド／ディスク集合体に組込まれたスピンドルの〜
始動手段に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a disk memory device, and in particular to a spindle incorporated in a head/disk assembly of a Winchester, in which the head contacts the disk surface at other times. ~
Relating to starting means.
・〔従来技術とその問題点〕
ディスクメモリ装置をより小型にする要求が高まるにつ
れ、その構成安素なより小型にすることが必要となって
きた。一方、溝成安素な小型化すると、多くの場合、克
服せねばならない他の制約が発生する。- [Prior art and its problems] As the demand for smaller disk memory devices increases, it has become necessary to make them smaller and simpler to construct. On the other hand, rapid miniaturization often creates other constraints that must be overcome.
ディスクメモリ装置のスピンドルモータは、該装置の主
！！構成髪素の１１ｆｌＡである。しかし、モータが小
型になると、始動トルクが減少する。当然ながら、より
高い始動トルクを有する小微スピンドルモータを設計す
ることは可能である。しかし、そのよっなモータは一般
に、より多くの電力を必要とし、多量の熱を発生するう
これらのことは小型ディスクメモリ装置の主要欠点とな
る。The spindle motor of a disk memory device is the main motor of the device! ! It is the constituent hair element 11flA. However, as the motor becomes smaller, the starting torque decreases. Of course, it is possible to design small spindle motors with higher starting torques. However, such motors generally require more power and generate a large amount of heat, which are major disadvantages of small disk memory devices.
ヘッド接触盤ディスクメモリ装置では、ヘッドとディス
クとの接触摩擦の由に、かな−９大きい始−動トルクが
スピンドルモータに要求される。上記摩擦は、ヘッド材
料とディスク媒体材料が異なれば、より大きくなり得る
。摩擦が大きくなればなる程、スピンドルモータに安来
される始動トルクは増大する。In a head-contact disk memory device, a starting torque of -9 is required from the spindle motor due to contact friction between the head and the disk. The friction can be higher if the head and disk media materials are different. The greater the friction, the greater the starting torque delivered to the spindle motor.
本発明の目的は、ヘッド接触型ディスクメモリｆｅｉｔ
において、ヘッドとディスクとの接触による始動４礫力
を上回りる工うにヘンドボジョナを付速する。An object of the present invention is to provide a head-contact type disk memory feit.
At this time, the hend positioner is accelerated to exceed the starting force caused by the contact between the head and the disk.
第３図を再び参照す、ると、ヘッドと媒体間の摩：ｗＬ
力Ｔｆに打ち勝つのに必要なトルクは奇妙な変化を示し
、番号３０で示すようにＴｍを超えることもある。この
Ｔｆ の変化は、媒体５０表面の摩耗層の性質の変化に
よる。しかし、ここでも、本発明によるヘッド・スライ
ダ集合体８の連続したディザ動作左、フライホイールと
して働く媒体５に＃積された慣性エネルギとによって、
スピンドルモータは加速を続け、最大運転速度に達する
ウヘッドスライダ集合体８が媒体５０表面から浮上し始
めると、Ｔｆは、３２に示すよ５に大きく減少ｔｔ始め
る。ヘッドスライダ集合体８が完全に浮上すると、Ｔｆ
は３４にボすよ５にゼロでない最小値となろうこの値は
、ヘッドスライダ集合体８の空気軸受表面の構成に関係
する。Referring again to FIG. 3, the friction between the head and the medium: wL
The torque required to overcome the force Tf exhibits strange variations and can even exceed Tm, as indicated by number 30. This change in Tf is due to a change in the properties of the wear layer on the surface of the medium 50. However, here too, due to the continuous dithering operation of the head slider assembly 8 according to the present invention, the inertial energy accumulated in the medium 5 acting as a flywheel causes
The spindle motor continues to accelerate, and when the head slider assembly 8 reaches its maximum operating speed and begins to float above the surface of the medium 50, Tf begins to decrease significantly to 5 as shown at 32 (tt). When the head slider assembly 8 completely floats, Tf
This value is related to the configuration of the air bearing surface of the head slider assembly 8.
本発明に従って構成されたディスクメモリ装置では、ヘ
ッドスライダ集合体８は、回転力Ｆｒが媒体５に加えら
れると直ちに、方向１０と１１とに交互に力Ｆａを受け
る。Ｆａの大きさは摩擦力Ｆｆより犬ぎ＜、Ｆ「はＦｆ
より小さい。力ＦｒとＦｆは。In the disk memory device constructed according to the present invention, the head slider assembly 8 receives a force Fa alternately in directions 10 and 11 as soon as the rotational force Fr is applied to the medium 5. The magnitude of Fa is smaller than the frictional force Ff, F" is Ff
smaller. The forces Fr and Ff are.
これらの力が加えられる媒体５上の点とスピンドルモー
タの回転軸中心との距離に従って、各々′ｒｍとＴｆに
関係する。According to the distance between the point on the medium 5 to which these forces are applied and the center of the axis of rotation of the spindle motor, 'rm and Tf are related, respectively.
Ｆａはヘントスライダ集合体８に対するヘッドポジショ
ナ串システムによって与えられる。ヘッドスライダ８の
変位は、それ櫨大きくＩＬりてよく、媒体５上の数トラ
ンク分のオーダでよい。Fa is provided by a head positioner skewer system for the hent slider assembly 8. The displacement of the head slider 8 may be large, on the order of several trunks on the medium 5.
力Ｆａが＊＊力Ｆｆに一旦打ち勝つと、ヘッドスライダ
集合体８のディザ動作は、接触部７に十分な空気の流れ
を発生させて、ヘッドスライダ集合体８をＶ＆体５の表
面から浮上させるのに十分な速度で媒体５が回転するｆ
では、少なくとも続く。Once the force Fa overcomes the force Ff, the dithering operation of the head slider assembly 8 generates a sufficient air flow in the contact portion 7 to lift the head slider assembly 8 above the surface of the V & body 5. The medium 5 rotates at a speed sufficient for f
Well, at least it continues.
上述したように、Ｆａは、媒体５０表面に平行な平面内
のいずれの方向にでも、ヘントスライダ集合体８に印加
されて工い。従って、実際、リニアモータ、又はロータ
リモータを使用するいずれのへンドボジショナ構成も１
本発明に使用され得る。As described above, Fa can be applied to the hent slider assembly 8 in any direction within a plane parallel to the surface of the medium 50. Therefore, in fact, any hend positioner configuration using a linear motor or a rotary motor
It can be used in the present invention.
ディスクメモリ装置のへッドボジショナを駆動するため
に使われるモータは、通常、高始動トルク特性ヲ持つス
テッパモータであることに注目すべきであろうこのよう
な特性は１選択されたトランク上への正確な位置決めな
モータが保証するために必要である。ヘンドボジショナ
システム用に設計されたステッパモータは％機械的振動
等によるトランク追従誤差を押えるための固有の保持力
を与えるために高トルクケ出力する。従って、殆ントの
ヘッド接触盤ディスクメモリ装置に既に使われているこ
のような高トルク出力能力は、始動動作期間中に使用す
ること力ζき、よって小型の、低トルク、低パワースピ
ンドルモータを使用することができる。ステッパモータ
のトルクは、ヘッドポジショナシステムの機械的設計を
考慮することによって、Ｆａとなろう
〔発明の効果〕
不発明によれば、ヘンドボジ７ヨナシステムのディザ動
作を利用しているので、小型、低トルク、低電力のスピ
ンドルモータを使用することができろうIt should be noted that the motors used to drive the head positioners of disk memory devices are typically stepper motors with high starting torque characteristics. A good positioning motor is necessary to guarantee. Stepper motors designed for hend positioner systems provide high torque output to provide inherent holding force to reduce trunk tracking errors due to mechanical vibrations, etc. Therefore, such high torque output capabilities, which are already used in most head-contact disc memory devices, require less power to be used during the starting operation, and thus require smaller, lower torque, lower power spindle motors. can be used. The torque of the stepper motor will be Fa by considering the mechanical design of the head positioner system. [Effects of the Invention] According to the invention, since the dither operation of the hendobj7yon system is used, it can be small, A low torque, low power spindle motor could be used
第１図は本発明によるディスク装置においてディスク表
面上にスライダヘッド集会体が乗った状態を示した斜視
図、第２図は第１図りん一人線に沿った断面図、第３図
はスピンドルモータの回転角と、スピンドルモータのト
ルク２よびヘッド・回転媒体間摩憚力との関係を示した
特性線図である。
５：ディスク媒体。
８ニス之イダヘッド集合体。FIG. 1 is a perspective view showing the slider head assembly mounted on the disk surface in a disk device according to the present invention, FIG. 2 is a cross-sectional view taken along the line of FIG. FIG. 2 is a characteristic diagram showing the relationship between the rotation angle of the spindle motor, the torque 2 of the spindle motor, and the frictional force between the head and the rotating medium. 5: Disc medium. 8 Nis no Idahead collection.
Claims (1)
表面に平行に、ヘッドにディザ運動を与える手段を設け
たことを特徴とするディスク装置。A head-contact type disk memory device, characterized in that the disk device is provided with means for applying dither motion to the head parallel to the surface of a rotating medium.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US66489184A | 1984-10-25 | 1984-10-25 | |
| US664891 | 1984-10-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61104472A true JPS61104472A (en) | 1986-05-22 |
Family
ID=24667871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23926085A Pending JPS61104472A (en) | 1984-10-25 | 1985-10-25 | Disk device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS61104472A (en) |
| DE (1) | DE3537515A1 (en) |
| GB (1) | GB2166279A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH071617B2 (en) * | 1986-06-30 | 1995-01-11 | 株式会社東芝 | Magnetic disk device and magnetic head control method for magnetic disk device |
| JPS63177382A (en) * | 1987-01-19 | 1988-07-21 | Nec Corp | Disk device |
| US4970610A (en) * | 1988-10-04 | 1990-11-13 | International Business Machines Corporation | Magnetic disk drive start procedure for starting reaction torque amplification |
| KR100871705B1 (en) * | 2007-03-13 | 2008-12-08 | 삼성전자주식회사 | Method for reducing wear of disk using a dithering process and disk drive using the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4530021A (en) * | 1982-11-26 | 1985-07-16 | International Business Machines Corporation | Micromotion release of heads from lubricated magnetic disks |
-
1985
- 1985-10-22 DE DE19853537515 patent/DE3537515A1/en not_active Withdrawn
- 1985-10-24 GB GB08526314A patent/GB2166279A/en not_active Withdrawn
- 1985-10-25 JP JP23926085A patent/JPS61104472A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE3537515A1 (en) | 1986-04-30 |
| GB8526314D0 (en) | 1985-11-27 |
| GB2166279A (en) | 1986-04-30 |
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