JPH0130214B2 - - Google Patents
Info
- Publication number
- JPH0130214B2 JPH0130214B2 JP23985483A JP23985483A JPH0130214B2 JP H0130214 B2 JPH0130214 B2 JP H0130214B2 JP 23985483 A JP23985483 A JP 23985483A JP 23985483 A JP23985483 A JP 23985483A JP H0130214 B2 JPH0130214 B2 JP H0130214B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- core
- wing
- recording
- shaped core
- 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.)
- Expired
Links
- 239000000463 material Substances 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 239000011521 glass Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910002971 CaTiO3 Inorganic materials 0.000 description 1
- 229910018605 Ni—Zn Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001513 hot isostatic pressing Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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
- G11B5/10—Structure or manufacture of housings or shields for heads
- G11B5/105—Mounting of head within housing or assembling of head and housing
-
- 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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/265—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
Description
【発明の詳細な説明】
本発明は、主にデイジタル信号用磁気記録再生
装置に使用される記録再生用磁気ヘツドの製造方
法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a magnetic head for recording and reproducing, which is mainly used in a magnetic recording and reproducing apparatus for digital signals.
フロツピイデイスク用の記録再生ヘツドとし
て、記録再生ヘツドのコアの両側に、その磁気ギ
ヤツプと同じ方向に消去用磁気ギヤツプを設けた
消去ヘツドを配設するトンネルイレーズ型の磁気
ヘツドと、記録再生ヘツドの両側に一定の間隔を
隔てて消去ヘツドコアを配設するストラドル型磁
気ヘツドとがある。いずれも、消去ヘツド用コア
と記録再生ヘツド用コアとの間隔の間で生ずる漏
れ磁界によつて記録信号の両側の歪、または乱れ
を磁気的にトリミング消去することによつて、磁
気ヘツドのトラツクの位置ずれで生ずる信号対雑
音比を改善するものである。
As a recording/reproducing head for a floppy disk, there is a tunnel erase type magnetic head in which an erasing head is provided with an erasing magnetic gap in the same direction as the magnetic gap on both sides of the core of the recording/reproducing head, and a recording/reproducing head. There is a straddle type magnetic head in which erasing head cores are arranged at regular intervals on both sides of the head. In either case, the tracks of the magnetic head are removed by magnetically trimming and erasing the distortion or disturbance on both sides of the recorded signal due to the leakage magnetic field generated between the core for the erase head and the core for the recording/reproducing head. This improves the signal-to-noise ratio caused by positional deviation.
ところで、この種の磁気ヘツドは高密度記録の
ため記録再生用ギヤツプは2μm以下、消去用ギヤ
ツプは20μm前後あるいはそれ以下と狭く、また
全体の寸法は幅Ｗ、奥行Ｌはおよそ６×６mm程度
であり、前記コア、スライダー等の構成部材には
高い加工精度を要する。 By the way, this type of magnetic head has a narrow recording/reproducing gap of less than 2 μm and an erasing gap of around 20 μm or less due to high-density recording, and its overall dimensions are approximately 6 x 6 mm in width W and depth L. However, components such as the core and slider require high processing precision.
また、これらの構成部材の接合（接着）は低融
点のガラスや特殊樹脂で行われるが、極めて狭い
磁気ギヤツプを形成するために作業が煩雑なこと
と作業工数を多く要し、さらには、特性が均一な
多量の磁気ヘツドを得るには組立作業に熟練度が
要求されて信頼性、品質保証に限界があり、コス
トも高くなるという欠点があつた。 In addition, bonding (adhesion) of these components is performed using low-melting glass or special resin, but the work is complicated and requires a large number of man-hours to form an extremely narrow magnetic gap, and furthermore, the characteristics However, in order to obtain a large quantity of magnetic heads with uniformity, a high level of skill is required in the assembly process, which limits reliability and quality assurance, and increases costs.
本発明は、これらを解決しようとするもので、
合理的な製造法を提供し、信頼性、生産性の良い
ストラドル・イレーズ型の磁気ヘツドを提供する
ことを目的とする。
The present invention aims to solve these problems.
The purpose is to provide a straddle erase type magnetic head with good reliability and productivity by providing a rational manufacturing method.
本発明は、記録再生用磁気ギヤツプの両側に該
記録再生用磁気ギヤツプと直交する向きに消去用
磁気ギヤツプを有する磁気ヘツドの製造方法にお
いて、
(1) 消去ヘツド用コアを与えるために軟磁性板材
料を、底部ほぼ中央部に突部を有し全体的に翼
形状のコアに形成する工程と、
(2) スライダー部となる非磁性板材に、該板材を
横切る方向に上記翼形状のコアを嵌合する溝を
形成するとともに、該溝の長さ方向ほぼ中央部
に上記突部を嵌合して裏面に露出できる穴部を
形成する工程と、
(3) 上記(1)の工程で得た翼形状のコアを、その突
部を上記(2)の工程で得た非磁性板材の穴部に嵌
合しながら、上記溝部に嵌合させ、該翼形状コ
アと非磁性板材とを固着する工程と、
(4) 上記(3)の工程で得た該翼形状コアを固着され
た非磁性板材を、該翼形状コアの上記突部上の
互いに離れた２位置を通り、しかも該翼形状コ
アの延在方向と直角な方向の２本の仮想線に沿
つて分割する工程と、
(5) 略Ｕ字形で“Ｕ”字の底部に記録再生用磁気
ギヤツプを形成した記録再生用ヘツドコアを形
成する工程と、
(6) 上記(4)の工程で分割された中央部を除いた左
右両側の分割片で、上記(5)の工程で得た“Ｕ”
字形の記録再生用ヘツドコアの底部を挟持しか
つ固着し、これによつて、該記録再生用ヘツド
コアの磁気ギヤツプの両側に、上記(4)で分割さ
れた翼形状コアとの間に形成された消去用磁気
ギヤツプを有したスライダ部材を形成する工
程、とを有することを特徴とする磁気ヘツドの
製造方法である。
The present invention provides a method for manufacturing a magnetic head having erasing magnetic gaps on both sides of a recording/reproducing magnetic gap in a direction perpendicular to the recording/reproducing magnetic gap. (2) Forming the material into an overall wing-shaped core with a protrusion in the center of the bottom; (2) forming the wing-shaped core on a non-magnetic plate material that will become the slider part in a direction transverse to the plate material; (3) forming a groove to be fitted into the groove and forming a hole that can be exposed on the back surface by fitting the protrusion into the approximately central portion of the groove in the length direction; The wing-shaped core is fitted into the groove while its protrusion is fitted into the hole of the non-magnetic plate obtained in step (2) above, and the wing-shaped core and the non-magnetic plate are fixed. (4) Passing the non-magnetic plate material to which the wing-shaped core obtained in step (3) above is fixed, passing through two mutually distant positions on the protrusion of the wing-shaped core, and (5) A recording and reproducing head core that is approximately U-shaped and has a magnetic gap for recording and reproducing formed at the bottom of the "U" shape. (6) The "U" obtained in the step (5) above with the divided pieces on both the left and right sides excluding the center part divided in the step (4) above.
The bottom part of the recording/reproducing head core is held and fixed, thereby forming a magnetic gap between the wing-shaped core divided in (4) above on both sides of the magnetic gap of the recording/reproducing head core. A method of manufacturing a magnetic head, comprising the step of forming a slider member having an erasing magnetic gap.
以下、本発明の実施例を図面を参照して詳細に
説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
本発明について図面を用いて説明する。 The present invention will be explained using the drawings.
第１図は、スライダー部となるべき非磁性板材
の形状を示す図である。CaTiO3あるいは
BaTi4O20などのフエライトコアとほぼ同じよう
な熱膨張係数を有する非磁性材で構成された平板
の中央にこれを横切るように延在する溝２を直線
状に形成されており、溝２の底部中央には貫通穴
３を形成している。 FIG. 1 is a diagram showing the shape of a non-magnetic plate material that is to become a slider section. CaTiO3 or
A groove 2 extending across the center of a flat plate made of a non-magnetic material having almost the same thermal expansion coefficient as a ferrite core such as BaTi 4 O 20 is formed in a straight line. A through hole 3 is formed in the center of the bottom.
第２図は、消去用のコアとなるべき軟磁性コア
部材４を示す図で、肉厚の薄い（例えばｔ＝0.15
〜0.17mm）Mn―Znフエライト、Ni―Znフエライ
ト等の熱間静水圧プレス（HIP）処理された軟磁
性材料で構成され、コアの左右及び下部の突部５
とを機械的に補強するためにガラス６が盛られて
いて、全体的には翼形状となつている。突部５は
消去用ギヤツプを形成するためのものである。 FIG. 2 is a diagram showing a soft magnetic core member 4 that is to become an erasing core, and has a thin wall thickness (for example, t=0.15
~0.17mm) Made of soft magnetic material processed by hot isostatic pressing (HIP) such as Mn-Zn ferrite and Ni-Zn ferrite, the protrusions 5 on the left and right sides and bottom of the core
Glass 6 is placed in order to mechanically reinforce the structure, and the overall shape is wing-shaped. The protrusion 5 is for forming an erasing gap.
第３図を参照して、第１図の非磁性板材１の溝
２中に、第２図の翼形状コア４を嵌合して固着す
る。このとき突部５は穴３中に嵌合されて端面
が、非磁性板材１の底面に露出される。なお、固
着はガラスあるいは樹脂で行われる。 Referring to FIG. 3, the wing-shaped core 4 shown in FIG. 2 is fitted into the groove 2 of the non-magnetic plate 1 shown in FIG. 1 and fixed. At this time, the protrusion 5 is fitted into the hole 3 and the end surface is exposed on the bottom surface of the non-magnetic plate material 1. Note that the fixation is performed using glass or resin.
その後、翼形状コア４の突部５上の互いに離れ
た２点を通り該コア４の延在方向と直角な方向の
２本の仮想線Ｂ―B′，Ｃ―C′で、翼形状コア４と
一緒に非磁性板材１を切断して、左右両側の分割
片と中央部の分割片との３つに分割する。 Thereafter, the wing-shaped core 4 is moved along two imaginary lines B-B' and C-C' passing through two points on the protrusion 5 of the wing-shaped core 4 separated from each other and in a direction perpendicular to the extending direction of the core 4. 4, the non-magnetic plate material 1 is cut and divided into three parts: left and right divided pieces and a central divided piece.
続いて、第４図に示すように、左右両側の分割
片の間に略Ｕ字形の記録再生用のヘツドコア７
を、その磁気ギヤツプＧを有する部分において挟
み込む。 Next, as shown in FIG. 4, a roughly U-shaped recording/reproducing head core 7 is inserted between the left and right divided pieces.
is sandwiched between the parts having the magnetic gap G.
記録再生用ヘツドコア７は、２つのコア７ａお
よび７ｂをガラス等で接合して、予めＵ字形に形
成されたものである。 The recording/reproducing head core 7 is formed in advance into a U-shape by joining two cores 7a and 7b with glass or the like.
こうして、第５図に示されるように、記録再生
用磁気ギヤツプＧの両側に、切断された翼形コア
４ａ，４ｂによつて消去用ギヤツプGe，Geを形
成したスライダー部材が得られる。 In this way, as shown in FIG. 5, a slider member is obtained in which erasing gaps Ge, Ge are formed on both sides of the recording/reproducing magnetic gap G by the cut airfoil cores 4a, 4b.
この後、第６図のように、記録再生用ヘツドコ
ア７にＲ／Ｗコイル８を挿着し、バツクバー９を
取り付けて閉磁路を形成させ、続いて第７図のよ
うに、分割された翼形コア部に、消去用コイル１
０を有する消去用バツクバー１１を取付けて閉磁
路を形成して磁気ヘツドが完成される。 After this, as shown in FIG. 6, the R/W coil 8 is inserted into the recording/reproducing head core 7, and the back bar 9 is attached to form a closed magnetic path. Erasing coil 1 in the shaped core part
A magnetic head is completed by attaching an erasing back bar 11 having a value of 0 to form a closed magnetic path.
上記実施例の説明から明らかなように、本発明
ではスライダー部材の切断を最小限にとどめた為
に、組立作業の効率が良く、しかも寸法精度、特
に磁気ギヤツプを高精度に行うことができ、生産
性、信頼性が向上し、コスト低減も可能となつ
た。
As is clear from the description of the above embodiments, in the present invention, the cutting of the slider member is kept to a minimum, so the assembly work is efficient, and the dimensional accuracy, especially the magnetic gap, can be made with high precision. Productivity and reliability have improved, and costs have also been reduced.
第１図は、スライダー部となる非磁性板材を示
す図で、ａ図は平面図、ｂ図はａ図のＡ―A′線
での断面図、第２図は、消去用ヘツドコアとさる
べきコアの形状を示す図で、ａ図は正面図、ｂ図
は底面図、第３図は、第１図の非磁性板材と第２
図の翼形コアとを組み合わせる工程を示す図で、
ａは組み合わせ関係を示す斜視図、ｂは組合わせ
た後の、ａ図のＡ―A′線での断面図、第４図は、
分割片と記録再生ヘツドとの組み合わせ関係を示
す斜視図、第５図は、組み合わせた後の底面側の
斜視図、第６図は、第５図の組み合わせ体上に、
Ｒ／Ｗコアとバツクバーを組付けた状態を示す斜
視図、第７図は第６図の組み立て体に消去コアと
バツクバーを組み付けた状態を示す斜視図であ
る。
１…スライダー用非磁性板材、２…溝、３…
穴、４…翼形軟磁性コア、５…突部、７…記録再
生ヘツドコア、Ｇ…記録再生用磁気ギヤツプ、
Ge…消去用磁気ギヤツプ。
Figure 1 shows the non-magnetic plate material that will become the slider part, Figure a is a plan view, Figure B is a sectional view taken along line A-A' in Figure A, and Figure 2 is the head core for erasing. Figure 3 shows the shape of the core; Figure a is a front view, Figure B is a bottom view, and Figure 3 shows the non-magnetic plate material in Figure 1 and the
This is a diagram showing the process of combining the airfoil core shown in the figure.
a is a perspective view showing the combination relationship, b is a cross-sectional view taken along line A-A' in figure a after the combination, and FIG.
FIG. 5 is a perspective view showing the combination of the divided pieces and the recording/reproducing head. FIG. 5 is a perspective view of the bottom side after they are combined. FIG.
FIG. 7 is a perspective view showing the assembled body of FIG. 6 with the erase core and back bar assembled. 1...Non-magnetic plate material for slider, 2...Groove, 3...
Hole, 4...Airfoil-shaped soft magnetic core, 5...Protrusion, 7...Recording/reproducing head core, G...Magnetic gap for recording/reproducing,
Ge...Magnetic gap for erasing.
Claims (1)
用磁気ギヤツプと直交する向きに消去用磁気ギヤ
ツプを有する磁気ヘツドの製造方法において、 (1) 消去ヘツド用コアを与えるために軟磁性板材
料を底部ほぼ中央部に突部を有し全体的に翼形
状のコアに形成する工程と、 (2) スライダー部となる非磁性板材に、該板材を
横切る方向に上記翼形状のコアを嵌合する溝を
形成するとともに、該溝の長さ方向ほぼ中央部
に上記突部を嵌合して裏面に露出できる穴部を
形成する工程と、 (3) 上記(1)の工程で得た翼形状のコアを、その突
部を上記(2)の工程で得た非磁性板材の穴部に嵌
合しながら、上記溝部に嵌合させ、該翼形状コ
アと非磁性板材とを固着する工程と、 (4) 上記(3)の工程で得た該翼形状コアを固着され
た非磁性板材を、該翼形状コアの上記突部上の
互いに離れた２位置を通り、しかも該翼形状コ
アの延在方向と直角な方向の２本の仮想線に沿
つて分割する工程と、 (5) 略Ｕ字形で“Ｕ”字の底部に記録再生用磁気
ギヤツプを形成した記録再生用ヘツドコアを形
成する工程と、 (6) 上記(4)の工程で分割された中央部を除いた左
右両側の分割片で、上記(5)の工程で得た“Ｕ”
字形の記録再生用ヘツドコアの底部を挟持しか
つ固着し、これによつて、該記録再生用ヘツド
コアの磁気ギヤツプの両側に、上記(4)で分割さ
れた翼形状コアとの間に形成された消去用磁気
ギヤツプを有したスライダ部材を形成する工程
とを有することを特徴とする磁気ヘツドの製造
方法。[Scope of Claims] 1. A method for manufacturing a magnetic head having erasing magnetic gaps on both sides of a recording/reproducing magnetic gap in a direction orthogonal to the recording/reproducing magnetic gap, comprising: (1) for providing a core for an erasing head; (2) Forming a soft magnetic plate material into an overall wing-shaped core with a protrusion in the center of the bottom; (3) the step of (1) above, forming a groove into which the core is fitted, and forming a hole which can be exposed on the back surface by fitting the protrusion into the substantially central part in the longitudinal direction of the groove; The wing-shaped core obtained in step (2) is fitted into the groove while the protrusion is fitted into the hole of the non-magnetic plate obtained in step (2) above, and the wing-shaped core and the non-magnetic plate are combined. (4) Passing the non-magnetic plate material to which the wing-shaped core obtained in step (3) above is fixed, passing through two mutually distant positions on the protrusion of the wing-shaped core, and a step of dividing the wing-shaped core along two imaginary lines perpendicular to the direction in which it extends; (6) The "U" obtained in the step (5) above with the divided pieces on both the left and right sides excluding the center part divided in the step (4) above.
The bottom part of the recording/reproducing head core is held and fixed, thereby forming a magnetic gap between the wing-shaped core divided in (4) above on both sides of the magnetic gap of the recording/reproducing head core. 1. A method of manufacturing a magnetic head, comprising the step of forming a slider member having an erasing magnetic gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23985483A JPS60133512A (en) | 1983-12-21 | 1983-12-21 | Production of magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23985483A JPS60133512A (en) | 1983-12-21 | 1983-12-21 | Production of magnetic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60133512A JPS60133512A (en) | 1985-07-16 |
| JPH0130214B2 true JPH0130214B2 (en) | 1989-06-16 |
Family
ID=17050860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23985483A Granted JPS60133512A (en) | 1983-12-21 | 1983-12-21 | Production of magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60133512A (en) |
-
1983
- 1983-12-21 JP JP23985483A patent/JPS60133512A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60133512A (en) | 1985-07-16 |
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