JPS5857633A - Burnishing method of magnetic disk medium - Google Patents
Burnishing method of magnetic disk mediumInfo
- Publication number
- JPS5857633A JPS5857633A JP15627281A JP15627281A JPS5857633A JP S5857633 A JPS5857633 A JP S5857633A JP 15627281 A JP15627281 A JP 15627281A JP 15627281 A JP15627281 A JP 15627281A JP S5857633 A JPS5857633 A JP S5857633A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic disk
- head
- disk medium
- medium
- slider
- 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
- G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
Landscapes
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は磁気ディスク媒体のバーニラシ一方法に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for verniscaling magnetic disk media.
磁気ディスク装置の磁気ヘッドは、磁気ディ1゜スフの
回転による空気流により微小すきま金保って浮上する。The magnetic head of a magnetic disk drive flies while maintaining a minute gap due to the airflow generated by the rotation of the magnetic disk.
この浮上すきまは記憶密度を高くする@、J−さいこと
が必要とされ、磁気ディスク媒体の表面の平滑性に対す
る要求も、厳しくなってきている。すなわち磁気ヘッド
浮動の町。This floating gap needs to be small to increase the storage density, and the requirements for the smoothness of the surface of the magnetic disk medium are also becoming stricter. In other words, it is a town with floating magnetic heads.
害となる磁気ディスク媒体表面の凹凸や塵埃はできるだ
け少ないことが望ましい。そこで磁気ディスク製造工程
におけるバーニッシュ工程では加工用ヘッドを実使用時
の磁気ヘッドの浮上すき1ニジ小さい浮上すき寸で、磁
気ディスク5表面を走査させ、表面の突出物及び塵埃を
取シ除いている。It is desirable to minimize harmful unevenness and dust on the surface of the magnetic disk medium. Therefore, in the burnishing process in the magnetic disk manufacturing process, the processing head is scanned over the surface of the magnetic disk 5 with a flying clearance one degree smaller than the flying clearance of the magnetic head during actual use, and the protrusions and dust on the surface are removed. There is.
しかしながら従来のバーニッシュ工程では、。However, in the traditional burnishing process.
磁気ディスクの位置すなわち加工ヘッドの位置の半径長
さに比例してディスクの周速度が増加l。The circumferential speed of the disk increases in proportion to the radial length of the position of the magnetic disk, that is, the position of the processing head.
するため、加工ヘッドの浮上すきまは内周部よ。Therefore, the floating clearance of the processing head is closer to the inner circumference.
りも外周部が大きくなる。その結果、磁気ディ。Also, the outer circumference becomes larger. As a result, magnetic di.
スフ表面には外周はど高い突出物及び大きい塵埃が残る
ことになる。そこでこの対策として、磁気ディスク媒体
の回転数全調整する方法が考1゜えられるが、モータの
特性、回転系の慣性、時。High protrusions and large amounts of dust will remain on the surface of the carpet. Therefore, as a countermeasure to this problem, a method of fully adjusting the rotation speed of the magnetic disk medium can be considered, but it depends on the characteristics of the motor, the inertia of the rotation system, and the time.
間の問題で困難が多い。さらに外周部で回転数。There are many difficulties due to problems in between. Furthermore, the number of revolutions at the outer periphery.
を下けた場合、加工効果も低下する。If it is lowered, the processing effect will also be lowered.
外周部に内周部よ勺も島い突出物及び大きい塵埃が残る
ということは、磁気ヘッド浮動開始、1)時と停止時に
、磁気ヘッドと磁気ディスク媒体が接触した状態を持つ
周知のコンタクトスタートストップ方式の磁気ディスク
の場合、外周部はど、磁気ヘッドが高い突出物及び大き
い塵埃に高速で衝突することになり、該磁気ヘッド、・
磁気ディスクの寿命の点で問題である。The fact that small protrusions and large dust remain on the outer periphery than on the inner periphery is due to the well-known contact start, in which the magnetic head and magnetic disk medium are in contact when the magnetic head starts floating and when it stops. In the case of a stop type magnetic disk, the magnetic head collides with tall protrusions and large dust at high speed on the outer periphery, causing damage to the magnetic head.
This is a problem in terms of the lifespan of the magnetic disk.
この発明の目的とするところを」、」1記の如き従来の
問題点を除去するものであり、iiE&気ディスクの全
域Vこわたり周一な浮上すきまで加工用ヘッドを浮動さ
せ、磁気ディスク媒体の表面を−1,1様に平滑化する
ことである。The purpose of the present invention is to eliminate the conventional problems as described in 1 above, and to float the processing head to a uniform floating gap over the entire area of the magnetic disk medium. This is to smooth the surface in a -1,1 manner.
この発明の特徴は加工用ヘッドの浮上すきま全調整する
ために周速度方向とヘッドスライダ−’に傾は有効な相
対周速度を減少させる点にある。すなわちヘッドスライ
ダ−を内周部では磁1゜気ディスク媒体の周速a方向と
ほぼ平行に設定し、ヘッドが外周部に走査するに従い、
一定の割合で該ヘッドスライダーヲ該ティスク媒体の周
速度方向に対し傾けるのであシ)。The feature of this invention is that in order to fully adjust the flying clearance of the machining head, tilting the head slider in the circumferential velocity direction reduces the effective relative circumferential velocity. That is, the head slider is set at the inner periphery to be approximately parallel to the circumferential velocity a direction of the magnetic disk medium, and as the head scans to the outer periphery,
(This is because the head slider is tilted at a constant rate with respect to the circumferential velocity direction of the disk medium.)
傾き角度は傾くことによシ減少する加」二相へラドの浮
上すき1量が、外周部で周速度が増加し、浮上すきまが
増加するf#:、を相殺するように調節し、内外周全同
一浮上すきまでバーニッシュする。The inclination angle is adjusted so as to offset f#:, which decreases due to inclination. Burnish until the entire circumference reaches the same height.
次に本発明の一実施例につき図面を用いて詳細に説明す
る。Next, one embodiment of the present invention will be described in detail using the drawings.
第1図は本発明の一実施例である磁気ディスク媒体のバ
ーニッシュ工程の構成である。図において1は磁気ディ
スク媒体、2は加工用ヘッド、5はへラドアーム、4は
ロータリーアクカ(具エータ全それぞれ示す。FIG. 1 shows the structure of a burnishing process for a magnetic disk medium according to an embodiment of the present invention. In the figure, 1 is a magnetic disk medium, 2 is a processing head, 5 is a spacing arm, and 4 is a rotary accumulator.
ヘッドアーム3の先端に取付けた加工用ヘッド2のスラ
イダーは磁気ディスク媒体1の内周部では、磁気ディス
ク媒体の周速)W方向に対しほぼ傾き角度θi n:z
Oの平行に設定され、外周部。At the inner periphery of the magnetic disk medium 1, the slider of the processing head 2 attached to the tip of the head arm 3 has an approximately inclination angle θin:z with respect to the circumferential speed (W) direction of the magnetic disk medium.
The outer periphery is set parallel to O.
ではロータリアクチェエータ4によりヘッドアーム3と
ともに加工用ヘッド2が回転し、磁気ディスク媒体10
周速度方向に対し傾き角度θo1Ltとなる。傾き角度
の大きさはアーム3の長さにより設定する。Then, the processing head 2 is rotated together with the head arm 3 by the rotary actuator 4, and the magnetic disk medium 10 is rotated by the rotary actuator 4.
The inclination angle is θo1Lt with respect to the circumferential velocity direction. The magnitude of the inclination angle is determined by the length of the arm 3.
第2図はそれぞれ周速度方向と加工ヘッドスライダの傾
き角度全一定にした場合の、磁気ディスク媒体と加工ヘ
ッドの周速度と浮上すき壕の関係′f!c(It VC
+周速度を一定にした場合の傾き角度と浮上すきまの関
係ヲ(2)に、加工ヘッドの。Figure 2 shows the relationship between the circumferential speed of the magnetic disk medium and the machining head and the floating groove when the circumferential velocity direction and the inclination angle of the machining head slider are all constant. c(It VC
+The relationship between the inclination angle and the flying clearance when the circumferential speed is constant (2) of the machining head.
磁気ディスク媒体」二の半径位置と浮上すきまの関係を
図(3)に示す。Figure (3) shows the relationship between the radial position of the magnetic disk medium and the flying clearance.
傾き角J1の設定の方法を以下に示す。今、加工用ヘッ
ドスライダーが傾いたとき、該加工用へラドスライダ受
圧部の形状に関係する揚力風。The method for setting the inclination angle J1 will be described below. Now, when the machining head slider is tilted, the lift wind is related to the shape of the pressure receiving part of the machining RAD slider.
数の変化は考えに入れないものとすると、浮上すき捷の
変化にはスライダに対する有効な周速度のみが関係する
としてよい。すなわち、浮上すき渣:h、傾き角度2θ
、半径工γ、回転数:ω、周速IQ:y 、有効な周
速1!I : 7ngct1、と1゜おくと、
71− γω ■7Jγeα
1−かα幼 ■
h−f(υrta1) ■
となる。Assuming that changes in the number are not taken into account, it may be assumed that the change in flying clearance is only related to the effective circumferential velocity for the slider. In other words, floating plow: h, inclination angle 2θ
, radius work γ, rotation speed: ω, circumferential speed IQ: y, effective circumferential speed 1! I: 7ngct1, and 1°, 71- γω ■7Jγeα
1- or α young ■ h-f (υrta1) ■.
第2図(1)において、もし内周部半径戸井と外周部半
径γoutの位置で周速度方向と加工用ヘッドの傾きが
等しい場合、内周と外周の有効周速度lrgal −i
nは00式よりlrgal−owtよりも小さくなり、
内周の浮上すきまhinは外周の浮上すき・。In Fig. 2 (1), if the circumferential velocity direction and the inclination of the machining head are equal at the positions of the inner radius and the outer radius γout, then the effective circumferential velocity of the inner and outer circumferences lrgal −i
From formula 00, n is smaller than lrgal-owt,
The floating clearance hin on the inner circumference is the floating clearance on the outer circumference.
まhoutよりも小さくなる。また、第2図(2)にお
いて、例えば外周部γou、tにおいて周速度υout
。It will be smaller than mahout. In addition, in FIG. 2 (2), for example, the peripheral speed υout at the outer peripheral portion γou, t
.
を一定とした場合、■(り式より傾き角度θが01から
θ、へと大きくなると有効周速度υγcalは小さくな
り浮上すきまh2はhl よりも小さくなろ1゜そこで
求める傾き角度は、内周部半径γinの。When is constant, (from the equation), as the inclination angle θ increases from 01 to θ, the effective circumferential speed υγcal decreases and the flying clearance h2 becomes smaller than hl. of radius γin.
傾き角θinと外周部半径γoutの傾き角θ0rLt
kνrgal−in −1in−〇in ■’l
h−gal−owt z 1outωcosθout
■υreal−in −1)real−ou、t
■ 1.。Inclination angle θ0rLt between inclination angle θin and outer radius γout
kνrgal-in -1in-〇in ■'l
h-gal-owt z 1outωcosθout
■υreal-in -1) real-ou, t
■ 1. .
となろ工うに選べばよい。すなわち任意の半径γにおけ
るθをγω魚θ%c one t Vcなるようにする
のである。All you have to do is choose Tonarokoun. That is, θ at an arbitrary radius γ is set to γωfishθ% cone t Vc.
上記のようなθを得々へラドアームの長さは簡単に求め
ることができるが、中周部では厳密にはγωC部θは一
定にはならない。Although the length of the rad arm can be easily determined by obtaining θ as described above, strictly speaking, the γωC portion θ is not constant at the middle circumference.
これにより加工用ヘッド2は第2図(3)のよう。As a result, the processing head 2 looks like that shown in FIG. 2 (3).
に、磁気ディスク媒体1の回転数固定の条件で、該磁気
ディスク媒体1の全域にわたり一定の浮上すきまでバー
ニッシュできる。Furthermore, under the condition that the rotational speed of the magnetic disk medium 1 is fixed, burnishing can be performed over the entire area of the magnetic disk medium 1 to a certain flying clearance.
以上述べた如き構成であるから不発明により、磁気ディ
スク媒体は内外周部の全域にわたり盾望の高さ以上の突
出物・塵埃のない均一な平滑性を持つことが可能となり
、とりわけコンタクトスタートストップ方式の場合に効
果を発揮ス1゜ることかできろ。With the structure described above, the magnetic disk medium can have uniform smoothness over the entire inner and outer periphery without any protrusions or dust that exceed the desired height, and in particular, the contact start stop Is it possible to demonstrate the effect in the case of a method?
第1図はバーニッシュ工程の構成図、第2図は周速度、
傾き角と浮上すき壕の関係図である。
1:磁気ディスク媒体、 2:加工用ヘッド3:ヘッド
アーム、 4;ロータリーアクチュエータ。
・ 7−
7 1 図
才 2 図Figure 1 is a block diagram of the burnishing process, Figure 2 is the circumferential speed,
FIG. 3 is a diagram showing the relationship between the inclination angle and the floating trench. 1: Magnetic disk medium, 2: Processing head 3: Head arm, 4: Rotary actuator.・7-7 1 Illustration 2 Illustration
Claims (1)
該ディスク周速度方向と平行に、外周部では、周速度方
向に対し傾けて浮動させることによフ、該ディスクの内
周から外周まで全域にわたり均一なヘッド浮上すきまで
行なうことを特徴とする磁気ディスク媒体のバーニッシ
ュ]、1方法。At the head slider (inner circumference of the magnetic disk medium),
The magnetic head is made to float parallel to the circumferential speed direction of the disk and at an angle to the circumferential speed direction at the outer circumference, thereby achieving a uniform head flying clearance over the entire area from the inner circumference to the outer circumference of the disk. Burnishing of disc media], 1 method.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15627281A JPS5857633A (en) | 1981-10-02 | 1981-10-02 | Burnishing method of magnetic disk medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15627281A JPS5857633A (en) | 1981-10-02 | 1981-10-02 | Burnishing method of magnetic disk medium |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5857633A true JPS5857633A (en) | 1983-04-05 |
Family
ID=15624179
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15627281A Pending JPS5857633A (en) | 1981-10-02 | 1981-10-02 | Burnishing method of magnetic disk medium |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5857633A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5880899A (en) * | 1997-02-25 | 1999-03-09 | International Business Machines Corporation | Removal of raised irregularities on a data storage disk with controlled abrasion by a magnetoresistive head |
-
1981
- 1981-10-02 JP JP15627281A patent/JPS5857633A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5880899A (en) * | 1997-02-25 | 1999-03-09 | International Business Machines Corporation | Removal of raised irregularities on a data storage disk with controlled abrasion by a magnetoresistive head |
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