JPH0620211A - Manufacture of magnitic head - Google Patents
Manufacture of magnitic headInfo
- Publication number
- JPH0620211A JPH0620211A JP17660892A JP17660892A JPH0620211A JP H0620211 A JPH0620211 A JP H0620211A JP 17660892 A JP17660892 A JP 17660892A JP 17660892 A JP17660892 A JP 17660892A JP H0620211 A JPH0620211 A JP H0620211A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- core
- magnetic head
- cores
- accuracy
- 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
Landscapes
- Magnetic Heads (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、磁気記録再生に用いる
フェライト製の磁気ヘッドの製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a magnetic head made of ferrite used for magnetic recording and reproduction.
【０００２】[0002]
【従来の技術】以下に従来のフェライトコアを用いた磁
気ヘッドの製造方法について説明する。2. Description of the Related Art A conventional method of manufacturing a magnetic head using a ferrite core will be described below.
【０００３】図３に示すように、フェライト材料製のＩ
型形状の磁気ヘッドコア２（以下コア２という）と、フ
ェライト材料製のＣ型形状の磁気ヘッドコア１（以下コ
ア１という）で対向面にギャップを形成した構成であ
る。As shown in FIG. 3, I made of a ferrite material is used.
A gap is formed between opposing surfaces of a mold-shaped magnetic head core 2 (hereinafter referred to as core 2) and a C-shaped magnetic head core 1 (hereinafter referred to as core 1) made of a ferrite material.
【０００４】コア１とコア２が対向するコア１のギャッ
プ面９とコア２のギャップ面１０の両方または少なくと
も片方に石英ガラス、ほう珪酸ガラスもしくは鉛ガラス
をスパッタリングして所定の磁気ギャップ長と同じ膜厚
に付着させたガラス薄膜４が形成されている。Quartz glass, borosilicate glass, or lead glass is sputtered on both or at least one of the gap surface 9 of the core 1 and the gap surface 10 of the core 2 where the core 1 and the core 2 face each other, and the same magnetic gap length is obtained. A glass thin film 4 attached to the film thickness is formed.
【０００５】図中の６はコア１の底面、７はコア２の底
面、８はコア１の上面、寸法Ｈはコア１の底面６より上
面８までの高さ、寸法Ｌはコア１，２の長さを示す。In the figure, 6 is the bottom surface of the core 1, 7 is the bottom surface of the core 2, 8 is the top surface of the core 1, dimension H is the height from the bottom surface 6 to the top surface 8 of the core 1, and dimension L is the cores 1 and 2. Indicates the length of.
【０００６】コア１とコア２を接合させるときは、図４
に示すように、コア１，２を組合せて接合用に使用され
る接合治具１６の組立面１７に底面６，７を当接させ、
スペーサー１２を両側に配置して装着し、コア１の高さ
寸法Ｈのほぼ中間の位置を押える押えごま１３をセット
し、押えごま１３の背面側に耐熱性材料のばね材１５を
配置し接合治具１６の本体に取り付けられた加圧ねじ１
４を調節して、ばね材１５を押えごま１３で加圧した状
態で、薄膜ガラス４の融点より低い融点のギャップの接
合ガラス棒５ａをギャップ部３の上部１１に挿入し接合
治具１６と一緒に還元性雰囲気の電気炉で４８０℃〜８
００℃の温度に加熱して溶融させ、図４に示すように、
磁気ギャップ長を所定寸法に保持して、コア１とコア２
を接合ガラス５で接合していた。接合治具１６の組立面
１７にコア１，２を配置したときに、コア１，２の底面
６，７に対するギャップ面９，１０の直角度の精度（以
下、直角精度という）が良くて９０°の場合は、磁気ギ
ャップ長が安定するが、図５に示すように直角精度が悪
くθ2＞９０°の場合は、接合治具１６の組立面１７に
当接させた底面６，７に影響されてギャップ部３の底面
６，７側のギャップ２０の磁気ギャップ長が上部１１側
のギャップ２１の磁気ギャップ長より広くなり特性が不
安定となる。When the core 1 and the core 2 are to be joined,
As shown in, the bottom surfaces 6 and 7 are brought into contact with the assembly surface 17 of the joining jig 16 used for joining by combining the cores 1 and 2,
The spacers 12 are arranged on both sides and mounted, and the presser sesame 13 for pressing the core 1 at a position approximately in the middle of the height dimension H is set, and the spring material 15 made of a heat resistant material is arranged on the back side of the presser sesame 13 and joined. Pressure screw 1 attached to the body of jig 16
4 is adjusted and the spring material 15 is pressed by the pressing sesame 13, the joining glass rod 5a having a gap having a melting point lower than that of the thin film glass 4 is inserted into the upper portion 11 of the gap portion 3 to form the joining jig 16. Together with an electric furnace in a reducing atmosphere at 480 ° C-8
It is heated and melted at a temperature of 00 ° C., and as shown in FIG.
The magnetic gap length is maintained at a predetermined dimension, and the core 1 and the core 2 are
Were bonded with the bonding glass 5. When the cores 1 and 2 are arranged on the assembly surface 17 of the joining jig 16, the accuracy of the squareness of the gap surfaces 9 and 10 with respect to the bottom surfaces 6 and 7 of the cores 1 and 2 (hereinafter referred to as right angle accuracy) is good. When the angle is 0, the magnetic gap length is stable, but as shown in FIG. 5, when the right angle accuracy is poor and θ 2 > 90 °, the bottom surfaces 6 and 7 which are brought into contact with the assembly surface 17 of the joining jig 16 are contacted. As a result, the magnetic gap length of the gap 20 on the bottom surfaces 6 and 7 side of the gap portion 3 becomes wider than the magnetic gap length of the gap 21 on the upper portion 11 side, and the characteristics become unstable.
【０００７】すなわち、磁気ギャップ長が底面６，７側
の方向に行くにしたがって均一でなくなり、コア１，２
の直角精度が磁気ギャップ長に大きな影響を与えること
になる。したがって、コア１，２の上述の直角精度を出
す精密加工に多くの作業工数を要していた。またコア
１，２の直角精度が悪いと、磁気ギャップ長の不良が発
生していた。That is, the magnetic gap length becomes less uniform as it goes toward the bottom surfaces 6, 7, and the cores 1, 2
The right angle accuracy of will greatly affect the magnetic gap length. Therefore, a lot of man-hours are required for the precision machining of the cores 1 and 2 to obtain the above-mentioned right angle accuracy. If the right angle accuracy of the cores 1 and 2 is poor, the magnetic gap length is defective.
【０００８】[0008]
【発明が解決しようとする課題】上述のように従来の方
法では磁気ヘッドコア１，２の底面６，７に対するギャ
ップ面９，１０の直角精度が良いことを必要とし、直角
精度が悪いと磁気ギャップ長の不良が生ずるという問題
点を有していた。As described above, the conventional method requires that the gap surfaces 9 and 10 have good right angle accuracy with respect to the bottom surfaces 6 and 7 of the magnetic head cores 1 and 2. There was a problem that long defects occurred.
【０００９】本発明は上記従来の問題点を解決するもの
で、コアの底面に対するギャップ面の直角精度を必要と
せず、かつ高精度の磁気ギャップ長が容易に形成できる
磁気ヘッドの製造方法を提供することを目的とする。The present invention solves the above-mentioned conventional problems and provides a method of manufacturing a magnetic head which does not require the accuracy of the right angle of the gap surface with respect to the bottom surface of the core and can easily form a highly accurate magnetic gap length. The purpose is to do.
【００１０】[0010]
【課題を解決するための手段】この目的を達成するため
に本発明の磁気ヘッドの製造方法は、一対の磁気ヘッド
コアの底面を接合治具の組立面から浮かせて保持し、接
合ガラスで接合させる方法である。In order to achieve this object, a method of manufacturing a magnetic head according to the present invention is arranged such that the bottom surfaces of a pair of magnetic head cores are floated from an assembly surface of a bonding jig and held, and bonded by a bonding glass. Is the way.
【００１１】[0011]
【作用】この方法において、磁気ヘッドコアの底面に対
するギャップ面の直角精度の影響を受けずに高精度な磁
気ギャップ長とすることとなる。In this method, the magnetic gap length can be made highly accurate without being affected by the accuracy of the perpendicularity of the gap surface to the bottom surface of the magnetic head core.
【００１２】[0012]
【実施例】以下本発明の一実施例について図面を参照し
ながら説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
【００１３】本発明の一実施例を示す図１ないし図２で
は、従来例と同一部品に同一番号を付して説明は省略す
る。図３で説明した従来例と同様のコア１とコア２の接
合方法について説明する。In FIGS. 1 and 2 showing an embodiment of the present invention, the same parts as those in the conventional example are designated by the same reference numerals and the description thereof will be omitted. A method of joining the core 1 and the core 2 similar to the conventional example described in FIG. 3 will be described.
【００１４】図１（ｂ）および図１（ｃ）に示すよう
に、接合治具１６の組立面１７の上に、コア１，２の長
さＬの寸法よりも４mm〜６mm長く円柱のセラミック材料
製の棒１８をコア１，２の組立時のコア１，２の各背面
の下側に位置させて、接合治具１６の両側に均等にはみ
だすように置き、その上に接合治具１６の組立面１７と
同等以下の面積で厚みが３mm〜５mmの直方体のセラミッ
ク材料製の板１９を置き、コア１，２を組合せて板１９
の上に乗せて、スペーサー１２を両側に配置しコア１の
高さ寸法Ｈのほぼ中間の位置を押える押えごま１３をセ
ットし、押えごま１３の背面にばね材１５を配置し接合
治具１６に取り付けられた加圧ねじ１４を調整してばね
材１５をゆるく加圧し仮止めする。コア１，２とスペー
サー１２とが仮固定された状態で、接合治具１６の組立
面１７の上に配置されている棒１８を取り除き、フリー
になった板１９も取りはずして、コア１，２とスペーサ
ー１２が組立面１７から浮いた状態で接合治具１６に取
り付けられた加圧ねじ１４を調整して、ばね材１５を加
圧し本締めして適確な加圧を行い図１（ａ）に示した状
態とする。As shown in FIGS. 1 (b) and 1 (c), on the assembly surface 17 of the joining jig 16, a cylindrical ceramic longer than the dimension of the length L of the cores 1 and 4 by 4 mm to 6 mm. A rod 18 made of a material is positioned below the respective back surfaces of the cores 1 and 2 when the cores 1 and 2 are assembled, and is placed on both sides of the joining jig 16 so as to be evenly protruded. A rectangular parallelepiped ceramic material plate 19 having an area equal to or smaller than that of the assembly surface 17 of 3 mm to 5 mm is placed, and the cores 1 and 2 are combined to form the plate 19.
Place the spacers 12 on both sides and set the presser sesame 13 to press the core 1 at a position approximately in the middle of the height H of the core 1. Place the spring material 15 on the back surface of the presser sesame 13 and join the joining jig 16 By adjusting the pressure screw 14 attached to the spring member 15, the spring member 15 is loosely pressed and temporarily fixed. With the cores 1 and 2 and the spacers 12 temporarily fixed, the rods 18 arranged on the assembly surface 17 of the joining jig 16 are removed, and the free plate 19 is also removed. 1A is adjusted by adjusting the pressure screw 14 attached to the joining jig 16 while the spacer 12 and the spacer 12 are floating from the assembly surface 17 and pressurizing the spring material 15 and finally tightening the pressure. ).
【００１５】以降の工程は、前述従来例で説明した工程
と同様であるので説明は省略する。以下にコア１および
コア２の直角精度により、コア１とコア２を組合せると
きに、底面６と底面７で形成する角度について説明す
る。Since the subsequent steps are the same as the steps described in the above-mentioned conventional example, the description thereof will be omitted. The angle formed by the bottom surface 6 and the bottom surface 7 when the core 1 and the core 2 are combined will be described below based on the right angle accuracy of the core 1 and the core 2.
【００１６】直角精度は精度の高い９０°をθ1で、精
度の悪い９０°超をθ2、また９０°未満をθ3で示す。The right angle accuracy is represented by θ 1 for highly accurate 90 °, θ 2 for less accurate 90 °, and θ 3 for less than 90 °.
【００１７】コア１およびコア２とも直角精度の高いθ
1のときは、図２（ａ）に示すようにθ1＋θ2＝１８０
°となり、同一平面上に底面６と底面７が配置される。Both the core 1 and the core 2 have a high θ accuracy.
When 1 , as shown in FIG. 2A, θ 1 + θ 2 = 180
And the bottom surface 6 and the bottom surface 7 are arranged on the same plane.
【００１８】コア１およびまたはコア２が直角精度の悪
いθ2またはθ3のときは、その組合せにより図２（ｂ）
ないし図２（ｉ）に示すような状態となる。When the core 1 and / or the core 2 have a poor right angle accuracy of θ 2 or θ 3 , the combination of them is shown in FIG.
To the state shown in FIG. 2 (i).
【００１９】すなわち、図２（ｂ）は、コア１がθ
1で、かつコア２がθ2のときでθ1＋θ2＞１８０°、図
２（ｃ）は、コア１がθ1で、かつコア２がθ3のときで
θ1＋θ3＜１８０°、図２（ｄ）は、コア１がθ2で、
かつコア２がθ2のときでθ2＋θ2＞１８０°、図２
（ｅ）は、コア１がθ2で、かつコア２がθ1のときでθ
2＋θ1＞１８０°、図２（ｆ）は、コア１がθ2で、か
つコア２がθ3のときでθ2＋θ3≧１８０°もしくはθ2
＋θ3≦１８０°、図２（ｇ）は、コア１がθ3で、かつ
コア２がθ2のときでθ3＋θ2≧１８０°もしくはθ3＋
θ2≦１８０°、図２（ｈ）は、コア１がθ3で、かつコ
ア２がθ1のときでθ3＋θ1＜１８０°、図２（ｉ）
は、コア１がθ3で、かつコア２がθ3のときでθ3＋θ3
＜１８０°となる。That is, in FIG. 2B, the core 1 is θ
1, and θ 1 + θ 2> 180 ° when the core 2 theta 2, FIG. 2 (c), the core 1 is theta 1 and θ 1 + θ 3 <180 ° when the core 2 is theta 3 2D, the core 1 is θ 2 ,
And when the core 2 is θ 2 , θ 2 + θ 2 > 180 °,
(E) shows θ when core 1 is θ 2 and core 2 is θ 1.
2 + θ 1 > 180 °, FIG. 2 (f) shows that θ 2 + θ 3 ≧ 180 ° or θ 2 when the core 1 is θ 2 and the core 2 is θ 3.
+ Θ 3 ≦ 180 °, in FIG. 2G, when the core 1 is θ 3 and the core 2 is θ 2 , θ 3 + θ 2 ≧ 180 ° or θ 3 +
θ 2 ≦ 180 °, FIG. 2 (h) shows that θ 3 + θ 1 <180 ° when the core 1 is θ 3 and the core 2 is θ 1 , FIG.
Is, θ 3 + θ 3 when the core 1 is theta 3, and the core 2 theta 3
<180 °.
【００２０】組合せ時のコア１の底面６とコア２の底面
７で形成する角度が１８０°を超えないときは、同一平
面より上部に底面６と底面７が配置されるので、組立面
１７もしくは板１９に無関係にギャップ部３の磁気ギャ
ップ長は均一に接合できる。When the angle formed by the bottom surface 6 of the core 1 and the bottom surface 7 of the core 2 in combination does not exceed 180 °, the bottom surface 6 and the bottom surface 7 are arranged above the same plane, so that the assembly surface 17 or The magnetic gap length of the gap portion 3 can be bonded uniformly regardless of the plate 19.
【００２１】しかし、前述の角度が１８０°を超えると
きは、組立面１７もしくは板１９に影響されるが、板１
９で仮止めしたのち、板１９を取り除いて、組立面１７
より浮かした状態で接合することにより、直角精度に無
関係にギャップ部３の磁気ギャップ長を均一に接合でき
ることになる。However, when the above-mentioned angle exceeds 180 °, the plate 1 is affected by the assembly surface 17 or the plate 19.
After temporarily fixing at 9, remove the plate 19 and remove the assembly surface 17
By joining in a more floating state, the magnetic gap length of the gap portion 3 can be joined uniformly regardless of the right angle accuracy.
【００２２】以上のように本実施例によれば、接合治具
の組立面から磁気ヘッドコアを浮かして接合させる方法
により、コア１，２の底面６，７に対しての規制がなく
なり、コア１，２の底面６，７に対するギャップ面１
０，９の直角精度が不必要となるのでコア１，２の底面
６，７に対する直角度の精度管理もし易くなって作業工
数も削減でき、かつ高精度の磁気ギャップ長を容易に形
成できる。As described above, according to this embodiment, the magnetic head cores are floated from the assembling surface of the joining jig to join the cores, and the bottom surfaces 6 and 7 of the cores 1 and 2 are not regulated. , 2 to the bottom surfaces 6 and 7 of the gap surface 1
Since the right angle accuracy of 0 and 9 is not necessary, the accuracy of the squareness of the bottom surfaces 6 and 7 of the cores 1 and 2 can be easily controlled, the number of work steps can be reduced, and a highly accurate magnetic gap length can be easily formed.
【００２３】[0023]
【発明の効果】以上の実施例の説明からも明らかなよう
に本発明は、一対の磁気ヘッドコアの底面を接合治具の
組立面から浮かせて保持し、接合ガラスで接合させる方
法により、磁気ヘッドコアの底面に対するギャップ面の
直角精度を必要とせず、かつ、高精度の磁気ギャップ長
が容易に形成できる優れた磁気ヘッドの製造方法を実現
できるものである。As is apparent from the above description of the embodiments, the present invention uses a method of holding the bottom surfaces of a pair of magnetic head cores floating from the assembly surface of the bonding jig and bonding them with a bonding glass. It is possible to realize an excellent magnetic head manufacturing method which does not require the accuracy of the gap surface at right angles to the bottom surface of the magnetic head and can easily form a highly accurate magnetic gap length.
【図１】（ａ）は本発明の一実施例の磁気ヘッドの製造
方法の磁気ヘッドコアを接合治具に取付けた状態を示す
断面略図 （ｂ）は同磁気ヘッドの製造方法の磁気ヘッドコアを接
合治具に仮止めした状態を示す断面略図 （ｃ）は図１（ｂ）の平面略図FIG. 1A is a schematic cross-sectional view showing a state in which a magnetic head core according to a method of manufacturing a magnetic head according to an embodiment of the present invention is attached to a joining jig. FIG. 1B shows a magnetic head core according to a method of manufacturing the same magnetic head. A schematic cross-sectional view showing a state of being temporarily fixed to a jig is a schematic plan view of FIG.
【図２】本発明の一実施例の磁気ヘッドの製造方法にお
ける磁気ヘッドコアを組合せたときに、磁気ヘッドコア
の直角精度により相互の底面で形成する角度の概念を示
した断面略図FIG. 2 is a schematic cross-sectional view showing the concept of an angle formed at the bottom surfaces of two magnetic head cores when the magnetic head cores are combined in a method of manufacturing a magnetic head according to an embodiment of the present invention, due to the right angle accuracy of the magnetic head cores.
【図３】一対の磁気ヘッドコアの分解斜視図FIG. 3 is an exploded perspective view of a pair of magnetic head cores.
【図４】従来の磁気ヘッドの製造方法の磁気ヘッドコア
を接合治具に取付け、接合ガラス棒を挿入した状態を示
す断面略図FIG. 4 is a schematic sectional view showing a state in which a magnetic head core of a conventional magnetic head manufacturing method is attached to a joining jig and a joining glass rod is inserted.
【図５】同磁気ヘッドの製造方法による磁気ヘッドコア
の底面に対するギャップ面の直角度が９０°より大きい
ときの接合状態を示す要部断面図FIG. 5 is a cross-sectional view of essential parts showing a joined state when the perpendicularity of the gap surface to the bottom surface of the magnetic head core is greater than 90 ° by the method for manufacturing the magnetic head.
１ 磁気ヘッドコア ２ 磁気ヘッドコア ３ ギャップ部 ４ ガラス薄膜（非磁性膜） ５ 接合ガラス １６ 接合治具 １７ 組立面 １８ 棒 １９ 板 1 magnetic head core 2 magnetic head core 3 gap part 4 glass thin film (non-magnetic film) 5 bonded glass 16 bonding jig 17 assembly surface 18 rod 19 plate
Claims (1)
製の磁気ヘッドコアのギャップ部の各対向面の少なくと
も一方に配設した磁気ギャップ長を規制する非磁性膜を
介して、一対の前記磁気ヘッドコアを接合ガラスで接合
した磁気コアブロックを加工した磁気ヘッドであって、
前記磁気ヘッドコアを所定の隙間だけ接合治具の組立面
から浮かして保持し、前記接合ガラスを溶融して接合さ
せる磁気ヘッドの製造方法。1. A pair of the magnetic head cores via a non-magnetic film for controlling the magnetic gap length, which is provided on at least one of the facing surfaces of the gap portions of the pair of magnetic head cores made of a ferrite material that constitutes a magnetic circuit. A magnetic head obtained by processing a magnetic core block in which
A method of manufacturing a magnetic head, wherein the magnetic head core is floated and held by a predetermined gap from an assembly surface of a bonding jig, and the bonded glass is melted and bonded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17660892A JPH0620211A (en) | 1992-07-03 | 1992-07-03 | Manufacture of magnitic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17660892A JPH0620211A (en) | 1992-07-03 | 1992-07-03 | Manufacture of magnitic head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0620211A true JPH0620211A (en) | 1994-01-28 |
Family
ID=16016547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17660892A Pending JPH0620211A (en) | 1992-07-03 | 1992-07-03 | Manufacture of magnitic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0620211A (en) |
-
1992
- 1992-07-03 JP JP17660892A patent/JPH0620211A/en active Pending
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