JPH0340278A - Floating magnetic head - Google Patents
Floating magnetic headInfo
- Publication number
- JPH0340278A JPH0340278A JP17512589A JP17512589A JPH0340278A JP H0340278 A JPH0340278 A JP H0340278A JP 17512589 A JP17512589 A JP 17512589A JP 17512589 A JP17512589 A JP 17512589A JP H0340278 A JPH0340278 A JP H0340278A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic head
- rail
- dimension
- recording medium
- 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.)
- Granted
Links
- 238000002156 mixing Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract 3
- 239000006185 dispersion Substances 0.000 abstract 1
- 238000005498 polishing Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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」
この発明は、コンポジットタイプなどの浮動式磁気ヘッ
ドに関するものである。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a floating magnetic head such as a composite type.
「従来の技術j
従来、回転中の磁気ディスクなどの磁気記録媒体に対し
、その磁気記録面から離間して浮上しつつ信号の書き込
みと読み出しを行う浮動式磁気ヘッドの一例として、第
5図と第6図に示す構造の磁気ヘットI4が知られてい
る。``Prior art j'' Conventionally, as an example of a floating magnetic head that writes and reads signals on a rotating magnetic recording medium such as a magnetic disk while floating away from the magnetic recording surface, A magnetic head I4 having the structure shown in FIG. 6 is known.
この磁気ヘッドHは、非磁性材からなるスライダー1の
媒体対向面に、少なくとも2本の平行なレール部2.2
を形成し、このレール部2の終端部にガラス接合材て磁
気コア4を固定してなる構成こなっている。この磁気コ
ア4は一般にI型コアと@線溝を形成したC型コアを組
み合わせて形成されている。そして、レール部2.2の
両端部には、それぞれテーパ面2 a、 2 bか形成
されている。This magnetic head H has at least two parallel rail portions 2.2 on the medium facing surface of the slider 1 made of a non-magnetic material.
is formed, and a magnetic core 4 is fixed to the terminal end of the rail portion 2 using a glass bonding material. This magnetic core 4 is generally formed by combining an I-shaped core and a C-shaped core in which @line grooves are formed. Tapered surfaces 2a and 2b are formed at both ends of the rail portion 2.2, respectively.
前記テーパ面2aは、磁気記録媒体が回転する際に、そ
の表面部分に発生する気流を浮力として効率良く利用し
ようとするためのものであり、レール部2.2の表面部
分は、磁気ヘッドHの浮動状態において磁気記録媒体と
所定間隔離間するエアーベアリング面2Aとされる。ま
た、前記テーパ面2aは、磁気記録媒体に対する磁気ヘ
ッドHの浮上量を安定させ、浮上時に磁気ギャップが磁
気記録媒体に接近しないようにするとともに、磁気記録
媒体が回転を開始する時あるいは回転を停止する時に、
スライダーlの端部で磁気記録媒体に損傷を与えないよ
うにするなどの目的で設けられている。The tapered surface 2a is intended to efficiently utilize the airflow generated on the surface portion of the magnetic recording medium as buoyancy when the magnetic recording medium rotates, and the surface portion of the rail portion 2.2 is designed to support the magnetic head H. The air bearing surface 2A is separated from the magnetic recording medium by a predetermined distance in the floating state. Further, the tapered surface 2a stabilizes the flying height of the magnetic head H with respect to the magnetic recording medium, prevents the magnetic gap from approaching the magnetic recording medium during flying, and when the magnetic recording medium starts or stops rotating. When stopping,
This is provided for the purpose of preventing damage to the magnetic recording medium at the end of the slider l.
「発明が解決しようとする課題」
第7図は、前記テーパ面2bの周囲部分を拡大して示し
た図である。第7図において斜線で示す三角形の部分は
、テーパ面2bを形成するためにスライダーlの一部を
研摩して除去した部分を示し、Bはその最大深さの寸法
を示している。また、第7図の矢印gで示した部分の下
方に第5図に示したギヤツブGが位置し、この矢印gで
示した部分からテーパ面2bの端部までの寸法をAで示
している。"Problem to be Solved by the Invention" FIG. 7 is an enlarged view of the surrounding area of the tapered surface 2b. In FIG. 7, the triangular portion indicated by diagonal lines indicates the portion of the slider l which has been partially polished and removed to form the tapered surface 2b, and B indicates its maximum depth dimension. Also, the gear G shown in FIG. 5 is located below the part indicated by arrow g in FIG. 7, and the dimension from this part indicated by arrow g to the end of the tapered surface 2b is indicated by A. .
ところで、現在、一般的な浮動式磁気ヘッドのテーパ面
2bのテーパ角は、108前後に規定されている。この
種の浮動式磁気ヘッドにおいて、ギヤツブ部Gでの浮上
特性のバラツキを減少させるためには、前述の寸法Aの
公差を小さくする必要があり、さらに、スライダーlを
薄型化するためには、前述の寸法Bをできる限り小さく
(B=0 、1 mm以下)することが好ましいが、従
来の構造では以下の理由により限界があった。Incidentally, at present, the taper angle of the tapered surface 2b of a general floating magnetic head is defined to be around 108 degrees. In this type of floating magnetic head, in order to reduce the variation in flying characteristics at the gear part G, it is necessary to reduce the tolerance of the dimension A mentioned above, and furthermore, in order to make the slider l thinner, Although it is preferable to make the above-mentioned dimension B as small as possible (B=0, 1 mm or less), the conventional structure has limitations due to the following reasons.
■寸法Aの公差は、第8図に示すテーパ加工の研摩公差
りに対し、
(寸法Aの公差)−(研摩公差D )/ (sin I
Oo)なる関係があるので、研摩公差りの5,7倍と
なってしまう。研摩公差りは現在のところ、±10〜2
0μm程度が限界であるので、結局、前記寸法Aの公差
を±0.05mm以下にすることは困難となる。■The tolerance of dimension A is (tolerance of dimension A) - (polishing tolerance D) / (sin I
Since there is a relationship as follows, the polishing tolerance is 5.7 times greater than the polishing tolerance. The polishing tolerance is currently ±10~2.
Since the limit is approximately 0 μm, it becomes difficult to reduce the tolerance of the dimension A to ±0.05 mm or less.
■寸法Bを小さくするには、第8図に示すように、B=
CtanlO” の関係があるので、テーパ角を10”
より小さくすれば良いが、テーパ角を小さくすると、
寸法Aの公差が[1/5in(テーパ角))(きされる
ために、寸法Aの公差が増大してしまう問題がある。従
って前記した従来の磁気ヘッドHの構造においては、B
=0.15mm程度が限界となっていた。■To reduce dimension B, as shown in Figure 8, B=
Since there is a relationship of ``CtanlO'', the taper angle is set to 10''.
It is better to make it smaller, but if you make the taper angle smaller,
Since the tolerance of dimension A is [1/5 inch (taper angle)], there is a problem that the tolerance of dimension A increases.Therefore, in the structure of the conventional magnetic head H described above, B
The limit was approximately 0.15 mm.
一方、テーパ面2bを研削加工により形成した場合、エ
アーベアリング面2Aとテーパ面2bとの境界部分に境
界線に沿って凹凸状のチッピングが発生し、磁気ヘッド
Hの浮上特性に悪影響を与える問題がある。On the other hand, when the tapered surface 2b is formed by grinding, uneven chipping occurs along the boundary line between the air bearing surface 2A and the tapered surface 2b, which adversely affects the flying characteristics of the magnetic head H. There is.
本発明は前記課題を解決するためになされたしので、レ
ール部の終端部に切欠部を形成することで安定した浮動
状態を得ることができ、磁気記録媒体に損傷を与えるこ
とがないとともに、切欠部の段差部分にチッピングが生
じていない浮動型磁気ヘッドを提供することを目的とす
る。The present invention has been made to solve the above problems, and by forming a notch at the end of the rail part, a stable floating state can be obtained, and the magnetic recording medium will not be damaged. It is an object of the present invention to provide a floating magnetic head in which chipping does not occur at the stepped portion of a notch.
「課題を解決するための手段」
本発明は前記課題を解決するために、磁気記録媒体に対
向する面にレール部を設けてスライダーを構成し、前記
レール部表面の終端側に磁気コアを固定してなる浮動式
磁気ヘッドにおいて、前記レール部の終端部に切欠部を
形成するととらに、レール部表面をブレンド加工により
研摩してなるものである。"Means for Solving the Problems" In order to solve the problems described above, the present invention provides a slider by providing a rail portion on the surface facing the magnetic recording medium, and fixing a magnetic core to the terminal end side of the surface of the rail portion. In the floating magnetic head, a notch is formed at the end of the rail, and the surface of the rail is polished by blending.
「作用 」
スライダ一部の終端部に形成した切欠部が磁気ヘッドを
安定浮動させる。また、レール部表面をブレンド加工に
より研摩することで、切欠部の段差部分を研摩できるの
で、この段差部分のチッピングが除去され、磁気ヘッド
の浮動状態が安定する。``Function'' A notch formed at the end of a portion of the slider allows the magnetic head to float stably. Further, by polishing the surface of the rail portion by blending, the stepped portion of the cutout portion can be polished, so that chipping at this stepped portion is removed and the floating state of the magnetic head is stabilized.
1実施例」
第1図と第2図は本発明をミニコンボノットタイプの浮
動式磁気ヘッドに適用した一実施例を示すもので、この
実施例の磁気ヘッド1oは、先に説明した従来の磁気ヘ
ッドHとほぼ同等の構造となっているので、従来の磁気
ヘッドHと同一構成部分には同一の符号を付してそれら
の説明を省略する。1 Embodiment" Figures 1 and 2 show an embodiment in which the present invention is applied to a mini-combo knot type floating magnetic head. The magnetic head 1o of this embodiment is different from the conventional one described above. Since the structure is almost the same as that of the magnetic head H, the same components as those of the conventional magnetic head H are given the same reference numerals, and their explanation will be omitted.
この実施例の磁気ヘッド10において、従来の磁気ヘッ
ドHと異なっているのは、レール部2における終端部の
構造である。この実施例においては、従来のテーパ面2
bの代わりに切欠部2dが形成され、切欠部2dの段差
部分2eがブレンド加工により研摩されて仕上げられて
いる。The magnetic head 10 of this embodiment differs from the conventional magnetic head H in the structure of the terminal end of the rail section 2. In this embodiment, the conventional tapered surface 2
A notch 2d is formed in place of b, and a stepped portion 2e of the notch 2d is polished and finished by blending.
前記切欠部2dを形成するには、スライダーlの終端部
を砥石などの研削工具で研削して形成する。この研削加
工を行ってレール部2の終端部に切欠部2dを形成した
状態では、第3図に示すように切欠部2dの段差部分に
不揃いの凹凸状のチッピングTが生じている。研削加工
を行って所定の深さで所定幅の切欠部2dを形成したな
らば、前記チッピング部分を除去するために、レール部
2の表面(エアベアリング面2A)にブレンド加工を行
う。The notch 2d is formed by grinding the end of the slider l with a grinding tool such as a grindstone. When this grinding process is performed to form the notch 2d at the end of the rail portion 2, irregular uneven chippings T occur at the stepped portion of the notch 2d, as shown in FIG. After the cutout portion 2d having a predetermined depth and a predetermined width is formed by the grinding process, a blending process is performed on the surface of the rail portion 2 (air bearing surface 2A) in order to remove the chipped portion.
ブレンド加工を行うには、ゴムのような弾性体の上に、
フィニッシングテーブ(研摩仕上用テープ)を置き、フ
ィニッシングテーブにスライダーlのレール部2を押し
付けつつレール部2と直行する方向に磨り動かして研摩
することで行う。To perform the blending process, place it on top of an elastic material such as rubber.
A finishing table (polishing tape) is placed, and the rail portion 2 of the slider 1 is pressed against the finishing table and polished by moving in a direction perpendicular to the rail portion 2.
この工程において、弾性体に押し付けられたレール部2
は端部においてより多く研摩されるので、レール部20
両端部は第1図に示すように研摩部分のコーナが曲線を
描き、レールwk2の終端部において、切欠部2の段差
部分2eのチッピングTが除去される。以上のようにフ
ィニッシングテープに押し付けて研摩するといった簡単
な作業でチッピングTの除去作業ができる。In this step, the rail portion 2 pressed against the elastic body
is ground more at the ends, so the rail portion 20
As shown in FIG. 1, the corners of the polished portions of both ends are curved, and the chipping T at the stepped portion 2e of the notch 2 is removed at the end of the rail wk2. As described above, the chipping T can be removed by simply pressing it against the finishing tape and polishing it.
このように研摩された磁気ヘッド10においては、研削
加工で切欠部2dを形成するので、第2図に示す寸法A
oの公差と寸法Boは砥石の加工精度そのもののばらつ
きとなる。従って前記構造を採用することで、寸法Ao
の公差を±0.03ma+といった従来の半分程度の値
にすることができ、高精度な加工ができる。また、寸法
Boを0.05mmとすることが可能であり、厚さ0.
5〜1mmの薄型のスライダーにも十分に対応できる。In the magnetic head 10 polished in this way, the notch 2d is formed by the grinding process, so the dimension A shown in FIG.
The tolerance o and the dimension Bo result in variations in the processing accuracy of the grindstone itself. Therefore, by adopting the above structure, the dimension Ao
The tolerance can be reduced to ±0.03 ma+, about half of the conventional value, allowing highly accurate processing. Further, the dimension Bo can be set to 0.05 mm, and the thickness is 0.05 mm.
It can also be used with thin sliders of 5 to 1 mm.
なお、前記実施例においてはこの発明をミニコンポジッ
トタイプの浮動式磁気ヘッドに適用した実施例について
説明したが、この発明を2レールタイプのミニモノリシ
ックタイプ浮動式磁気ヘッドなどの他の構造の磁気ヘッ
ドに適用できるのは勿論である。In the above embodiments, an embodiment in which the present invention is applied to a mini-composite type floating magnetic head has been described, but the present invention can also be applied to magnetic heads of other structures such as a two-rail type mini-monolithic type floating magnetic head. Of course, it can be applied to
「発明の効果」
以上説明したように本発明は、レール部の終端部に従来
のテーパ面に代えて切欠部を形成したので、この切欠部
で磁気ヘッドの磁気記録媒体に対する安定浮上を図るこ
とができ、磁気記録媒体の損傷を引き起こすことがない
。また、切欠部を形成する場合、切欠部の位置と深さは
切欠部の加工精度の値に直接対応するので、従来のテー
パ面を形成する場合よりも精度良く形成することができ
、その場合に磁気ヘッドの安定浮上効果を確実なものに
することができる。また、切欠部を精度良く浅く形成で
きるので、厚さ0.5〜lml11程度の薄型のスライ
ダーに適用することが容易であり磁気ヘッドの薄型化に
対応できる効果がある。"Effects of the Invention" As explained above, in the present invention, a notch is formed at the end of the rail section in place of the conventional tapered surface, so that the magnetic head can stably float relative to the magnetic recording medium using this notch. without causing damage to the magnetic recording medium. In addition, when forming a notch, the position and depth of the notch directly correspond to the machining accuracy value of the notch, so it can be formed with higher precision than when forming a conventional tapered surface. The stable flying effect of the magnetic head can be ensured. Further, since the notch can be formed shallowly with high precision, it is easy to apply to a thin slider with a thickness of about 0.5 to 1 ml, and there is an effect that it can respond to thinning of magnetic heads.
第1図と第2図は本発明の磁気ヘッドの一実施例を示す
もので、第1図は底面図、第2図は端部拡大図、第3図
と第4図は前記磁気ヘッドのブレンド加工前の状態を示
すもので、第3図は底面図、第4図は側面図、第5図な
いし第7図は従来の磁気ヘッドを説明するためのもので
、第5図は底面図、第6図は側面図、第7図は端部拡大
図、第8図は切取部分の説明図である。
2・・・レール部、2A・・・スライダー面、2a、2
b−、・・テーパ面、2d・・・切欠部、2e・・段差
部、4・・・磁気コア、G・・・ギャップ、T・・・チ
ッピング。1 and 2 show an embodiment of the magnetic head of the present invention, FIG. 1 is a bottom view, FIG. 2 is an enlarged end view, and FIGS. 3 and 4 are views of the magnetic head. It shows the state before blending processing. Figure 3 is a bottom view, Figure 4 is a side view, Figures 5 to 7 are for explaining the conventional magnetic head, and Figure 5 is a bottom view. , FIG. 6 is a side view, FIG. 7 is an enlarged view of the end, and FIG. 8 is an explanatory view of a cut portion. 2...Rail part, 2A...Slider surface, 2a, 2
b-,...Tapered surface, 2d...Notch, 2e...Step, 4...Magnetic core, G...Gap, T...Chipping.
Claims (1)
ーを構成し、前記レール部表面の終端側に磁気コアを固
定してなる浮動式磁気ヘッドにおいて、 前記レール部の終端部に切欠部が形成されるとともに、
レール部表面がブレンド加工により研摩されてなること
を特徴とする浮動式磁気ヘッド。[Scope of Claims] A floating magnetic head comprising a slider provided with a rail portion on a surface facing a magnetic recording medium, and a magnetic core fixed to a terminal end side of the surface of the rail portion, comprising: a terminal end of the rail portion; A notch is formed in the part, and
A floating magnetic head characterized by the rail surface being polished by blending.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1175125A JP2930603B2 (en) | 1989-07-06 | 1989-07-06 | Floating magnetic head and method of manufacturing the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1175125A JP2930603B2 (en) | 1989-07-06 | 1989-07-06 | Floating magnetic head and method of manufacturing the same |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0340278A true JPH0340278A (en) | 1991-02-21 |
JP2930603B2 JP2930603B2 (en) | 1999-08-03 |
Family
ID=15990723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1175125A Expired - Lifetime JP2930603B2 (en) | 1989-07-06 | 1989-07-06 | Floating magnetic head and method of manufacturing the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2930603B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6040965A (en) * | 1996-08-28 | 2000-03-21 | Tdk Corporation | Thin film magnetic head having grooves which become gradually shallower |
US6282061B1 (en) * | 1994-03-17 | 2001-08-28 | Fujitsu Limited | Magnetic head with improved floating surface |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5148320A (en) * | 1974-10-23 | 1976-04-26 | Hitachi Ltd | FUDOGATAJIKI HETSUDOSURAIDAA |
JPS61170922A (en) * | 1985-01-23 | 1986-08-01 | Fujitsu Ltd | Magnetic head slider |
JPS62165724A (en) * | 1986-01-17 | 1987-07-22 | Alps Electric Co Ltd | Manufacture of floating magnetic head |
-
1989
- 1989-07-06 JP JP1175125A patent/JP2930603B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5148320A (en) * | 1974-10-23 | 1976-04-26 | Hitachi Ltd | FUDOGATAJIKI HETSUDOSURAIDAA |
JPS61170922A (en) * | 1985-01-23 | 1986-08-01 | Fujitsu Ltd | Magnetic head slider |
JPS62165724A (en) * | 1986-01-17 | 1987-07-22 | Alps Electric Co Ltd | Manufacture of floating magnetic head |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6282061B1 (en) * | 1994-03-17 | 2001-08-28 | Fujitsu Limited | Magnetic head with improved floating surface |
US7142393B2 (en) | 1994-03-17 | 2006-11-28 | Fujitsu Limited | Magnetic head and magnetic disk apparatus |
US6040965A (en) * | 1996-08-28 | 2000-03-21 | Tdk Corporation | Thin film magnetic head having grooves which become gradually shallower |
Also Published As
Publication number | Publication date |
---|---|
JP2930603B2 (en) | 1999-08-03 |
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