JPS5971125A - Manufacture of magnetic head - Google Patents

Manufacture of magnetic head

Info

Publication number
JPS5971125A
JPS5971125A JP57181479A JP18147982A JPS5971125A JP S5971125 A JPS5971125 A JP S5971125A JP 57181479 A JP57181479 A JP 57181479A JP 18147982 A JP18147982 A JP 18147982A JP S5971125 A JPS5971125 A JP S5971125A
Authority
JP
Japan
Prior art keywords
core
erasing
chip
recording
tip
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
Application number
JP57181479A
Other languages
Japanese (ja)
Other versions
JPS638526B2 (en
Inventor
Eiji Nakagawa
中川　永二
Shoichi Koyama
小山　庄一
Tetsuya Iwata
哲也 岩田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alps Alpine Co Ltd
Original Assignee
Alps Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Priority to JP57181479A priority Critical patent/JPS5971125A/en
Priority to KR1019830004255A priority patent/KR840006864A/en
Publication of JPS5971125A publication Critical patent/JPS5971125A/en
Publication of JPS638526B2 publication Critical patent/JPS638526B2/ja
Granted legal-status Critical Current

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
    • G11B5/127—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
    • G11B5/2651—Manufacture

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)

Abstract

PURPOSE:To obtain a magnetic head possible for high-density recording, by forming a reinforcing section made of a nonmagnetic material to the outside of an erasing core tip in one body with the erasing core tip prior to processing of groove of a chip paired with erasing cores. CONSTITUTION:The 1st roof type filling groove 13 is provided at a core blank material 12 and molten glass is poured and a link section 8 is formed by cooling the glass. Then, the 2nd filling groove is provided at both sides of the tip of the filling groove 13, molten glass is poured and cooled to form a reinforcing section 15. Both shoulders 16 are removed by polishing to form a center projection 17, a groove 9 is formed by cutting, and sliced into a prescribed thickness, and the chip 6 paired with erasing cores is obtained, where two erasing cores 7 having a thin tip 10 are linked as one body with the link member 8. Then, this chip 6 is inserted to the 2nd inserting groove 3 of a core holder 1, a coupling member block 11 is inserted to a gap among the core holder 1, a recording reproducing core 4 and the chip 6, and they are bonded together by heating. Then, the magnetic head assembling is finished, by polishing the surface of the core holder in contact with the magnetic recording medium, the recording and reproducing core 4 and the erasing core-paired chip 6 with good accuracy.

Description

【発明の詳細な説明】 本発明は磁気ヘッドに係り、特に磁気ディスクなどの磁
気記録媒体を用いるデジタル記録再生装置用の磁気ヘッ
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 magnetic head, and more particularly to a method of manufacturing a magnetic head for a digital recording/reproducing device using a magnetic recording medium such as a magnetic disk.

第１図ないし第３図は、この種の従来の磁気ヘッドを説
明するための図である。1 to 3 are diagrams for explaining this type of conventional magnetic head.

第１図に示すように、セラミックスなどからなるコア保
持体１には、一方向に延びた第１の嵌合溝２と、それと
直交するように延びた第２の嵌合溝３とが形成されてい
る。前記第１の嵌合溝２には、フェライトやセンダスト
などからなる記録再生コア４が嵌め込まれ、この記録再
生コア４のほぼ中央部には記録再生ギャップを構成する
ためのガラス層５が設けられている。前記第２の嵌合溝
３には、消去コア対テッグ６が嵌め込まれる。この消去
コア対チップ６は、フェライトやセンダストなどからな
る２つの消去コア７．７をガラスなどからなる非磁性連
結材８で一体に連結したものからなっている。消失コア
対チッグ６の磁気記録媒体と対向する側のほぼ中央には
、コア保持体１に嵌着された記録再生コア４の一部を跨
ぐための溝部９が形成され、この溝部９の外側にそれぞ
れの消去コア７の先端部１０が配置された形になってい
る。As shown in FIG. 1, a core holder 1 made of ceramics or the like is formed with a first fitting groove 2 extending in one direction and a second fitting groove 3 extending perpendicularly thereto. has been done. A recording/reproducing core 4 made of ferrite, sendust, or the like is fitted into the first fitting groove 2, and a glass layer 5 for forming a recording/reproducing gap is provided approximately at the center of the recording/reproducing core 4. ing. The erase core pair Teg 6 is fitted into the second fitting groove 3 . This erasing core pair chip 6 consists of two erasing cores 7.7 made of ferrite, sendust, etc., which are integrally connected by a nonmagnetic connecting material 8 made of glass or the like. A groove 9 for straddling a part of the recording/reproducing core 4 fitted in the core holder 1 is formed approximately in the center of the vanishing core pair tip 6 on the side facing the magnetic recording medium. The tip end portion 10 of each erasing core 7 is disposed at.

前述のように記録再生コア４ならびに消去コア対チップ
６をコア保持体１の第１の嵌合溝２および第２の嵌合溝
３に順次嵌め込んだのち、コア保持体１と記録再生コア
４ならびに消失コア対チップ６との隙間に、ガラスなど
からなる結合材ブロック１１を挿入する。そして結合材
ブロック１１の融点以上の温度に加熱することにより、
コア保持体１と配録再生コア４と消失コア対チップ６と
を一体に結着せしめて、記録再生コア４ならびに消失コ
ア対チップ６の位置決めを行なう。しかるのち磁気記録
媒体と接する側の表面を精度よく研摩することにより、
磁気ヘッドの組立てを終了する。After the recording/reproducing core 4 and the erasing core pair chip 6 are sequentially fitted into the first fitting groove 2 and the second fitting groove 3 of the core holder 1 as described above, the core holder 1 and the recording/reproducing core are fitted. 4 and the gap between the vanishing core and the chip 6, a binding material block 11 made of glass or the like is inserted. By heating the binder block 11 to a temperature higher than its melting point,
The core holder 1, the recording/reproducing core 4, and the lost core pair chip 6 are tied together, and the recording/reproducing core 4 and the lost core pair chip 6 are positioned. Then, by precisely polishing the surface that contacts the magnetic recording medium,
Finish assembling the magnetic head.

一方、磁気ディスクなどの磁気記録媒体においては、磁
気記録の高密度化、あるいは同じ記録容量で磁気ディス
クを小型化する場合、単位長さ当りの記録再生トラック
の数が増すとともに、１つ１つの記録再生トラックの幅
ならびに隣の記録再生トラックとの隙間がそれぞれ狭く
なる。これに対応して記録再生コア４の幅Ｗ（第２図参
照）が狭くなるのはもちろんのこと、消去コア７の先端
部１０における厚さｔも例えば第２図に示すようところ
がこのように消去コア７の先端部１０が徐々に薄くなる
と、切削加工によって所定の深さの溝部９を形成すると
きに、それの両側にある先端部１０が容易に折れ曲がっ
たり、欠損したりして製品不良を生じる。このようなこ
とがあるため、歩留りを考慮すると消去コア７の先端部
１０の厚さは約１１０μｍが限度であり、磁気記録の高
密度化に障害となる。On the other hand, in magnetic recording media such as magnetic disks, when increasing the density of magnetic recording or reducing the size of magnetic disks with the same recording capacity, the number of recording and reproducing tracks per unit length increases, and each The width of the recording/reproducing track and the gap between it and the adjacent recording/reproducing track become narrower. Correspondingly, not only the width W (see FIG. 2) of the recording/reproducing core 4 becomes narrower, but also the thickness t at the tip 10 of the erasing core 7, for example, as shown in FIG. If the tip 10 of the erasing core 7 gradually becomes thinner, the tips 10 on both sides of the groove 9 are easily bent or damaged when cutting to form the groove 9 of a predetermined depth, resulting in product defects. occurs. Because of this, in consideration of yield, the thickness of the tip end 10 of the erasing core 7 is limited to approximately 110 μm, which is an obstacle to increasing the density of magnetic recording.

本発明の目的は、このような従来技術の欠点を解消し、
高密摩記録が可能な磁気ヘッドの製造方法を提供するに
ある。The purpose of the present invention is to eliminate such drawbacks of the prior art,
An object of the present invention is to provide a method for manufacturing a magnetic head capable of high-density recording.

この目的を達成するため、本発明は、この種の磁気ヘッ
ドにおいて、消去コア対チップの渦部加工前に、消去コ
ア先端部の外側にガラスなどの非磁性材からなる補強部
を消去コア先端部と一体に形成したことを特徴とするも
のである。In order to achieve this object, the present invention provides a magnetic head of this type with a reinforcing section made of a non-magnetic material such as glass on the outside of the erase core tip before processing the vortex of the erase core versus the chip. It is characterized by being formed integrally with the section.

次に本発明の実施例を第４図ないし第１２図とともに説
明する。従来と同様にコア保持体１に第１の嵌合溝２と
第２の嵌合溝３とが形成され、これらの溝２，３に記録
再生コア４ならびに消失コア対チッグ６が順次嵌め込ま
れる。記録再生コア４の構成などは従来のものと同様で
あるので、それの説明は省略する。Next, embodiments of the present invention will be described with reference to FIGS. 4 to 12. As in the prior art, a first fitting groove 2 and a second fitting groove 3 are formed in the core holder 1, and the recording/reproducing core 4 and the vanishing core pair 6 are fitted into these grooves 2 and 3 in sequence. . Since the configuration of the recording/reproducing core 4 is the same as that of the conventional one, a description thereof will be omitted.

消去コア対チップ６の製造工程について、第７図ないし
第１２図を用いて説明する。The manufacturing process of the erased core pair chip 6 will be explained using FIGS. 7 to 12.

最初、第７図に示すようにフェライトやセンダストなど
の磁性材料からなる長尺状のコア素材１２を準備する。First, as shown in FIG. 7, a long core material 12 made of a magnetic material such as ferrite or sendust is prepared.

なお、図ではスペース上コア素材１２の一部しか示して
いない。そしてこのコア素材１２の下部中央に上部へ向
けて尖った屋根形の第１の充填溝１３を設け（相８図参
照）、第９図に示すように、この第１の充填溝１３に比
較的融点の高い溶融状態のガラスを注入し冷却して連結
部８を形成する。次に第１０図に示す如くコア素材１２
の上部でかつ前記第１の充填溝１３の尖端部両側に第２
の充填溝１４．１４を設け、この溝１４には前記連結材
８よりも融点の低い溶融状態のガラスをそれぞれ注入し
冷却して補強部１５を形成する０そして第１２図に示す
如くコア素材１２の前記補強部１５の外側にあたる両肩
部１６．１６を研摩によって除去して、両側が補強部１
５．１５で神強された中央突出部１７が形成される。つ
いで第１３図に示すように中央突出部１７の中心から前
記連結材８に向けて切削加工により溝部９を形成し、溝
部９の底部は連結材８の上部に達している。この溝部９
を形成する際、前述のように中央突出部１７の両側が補
強部１５．１５で補強されているため、中央突出部１７
の残部の厚さが薄くなっても欠損するようなことはない
。しかるのち第１４図に示すようにコア素材１２をそれ
の長手方向に沿って所定の厚さにスライスすることによ
り、肉薄の先端部１０を有する２個の消失コア７．７が
連結材８で一体に連結された消失コア対チップ６が順次
得られる。In addition, in the figure, only a part of the core material 12 is shown due to space. Then, a roof-shaped first filling groove 13 is provided at the center of the lower part of this core material 12 (see Fig. 8), and as shown in Fig. 9, a comparison is made with this first filling groove 13. The connecting portion 8 is formed by injecting molten glass with a high target melting point and cooling it. Next, as shown in FIG. 10, the core material 12
and on both sides of the tip of the first filling groove 13.
Filling grooves 14 and 14 are provided, and molten glass having a melting point lower than that of the connecting material 8 is injected into the grooves 14 and cooled to form a reinforcing portion 15.Then, as shown in FIG. Both shoulder portions 16.16 on the outside of the reinforcing portion 15 of No. 12 are removed by polishing, and both sides of the reinforcing portion 15 are removed by polishing.
At step 5.15, the strengthened central protrusion 17 is formed. Next, as shown in FIG. 13, a groove 9 is formed by cutting from the center of the central protrusion 17 toward the connecting member 8, and the bottom of the groove 9 reaches the top of the connecting member 8. This groove 9
When forming the central protruding part 17, since both sides of the central protruding part 17 are reinforced with the reinforcing parts 15.15 as described above.
Even if the thickness of the remaining part becomes thinner, there will be no damage. Then, as shown in FIG. 14, by slicing the core material 12 along its longitudinal direction to a predetermined thickness, two vanishing cores 7.7 having thin tip portions 10 are formed with the connecting material 8. Disappearing core pair chips 6 connected together are sequentially obtained.

この消去コア対チップ６は、前述のようにコア保持体１
の第２の嵌合溝３に嵌入され、その後に補強部１５と同
じ程度の融点を有するガラス製の結合材ブロック１１（
１４図参照）を、コア保持体１と記録再生コア４ならび
に消去コア対チップ６との隙間に挿入する。そして結合
材ブロック１１ならびに補強部１５の融点以上の温度に
加熱することにより、コア保持体１と記録再生コア４と
消失コア対チップ６とを一体に結着する。しかるのち磁
気記録媒体と接する側のコア保持体１、記録再生コア４
ならびに消去コア対チップ６０表面を精度よく研摩する
ことにより、磁気ヘッドの組立てを終了する。This erased core pair chip 6 is connected to the core holder 1 as described above.
After that, a bonding material block 11 made of glass having a melting point similar to that of the reinforcing portion 15 (
14) are inserted into the gaps between the core holder 1, the recording/reproducing core 4, and the erasing core pair chip 6. By heating the bonding material block 11 and the reinforcing portion 15 to a temperature higher than their melting points, the core holder 1, the recording/reproducing core 4, and the vanishing core pair chip 6 are bonded together. After that, the core holder 1 and the recording/reproducing core 4 on the side in contact with the magnetic recording medium are removed.
The surface of the erase core pair chip 60 is polished with high precision to complete the assembly of the magnetic head.

本発明は前述のように消去コア対チップの溝部加工前に
、消去コア先端部の外側に補強部を一体に形成したため
、渦部な形成する際に消去コア先端部が欠損したりする
ことがなく、溝加工か容易である。しかも消去コア先端
部の厚さを可及的に薄くすることができ、そのために高
密変記録があるいは（ならびに）磁気ディスクの小型化
可能な磁気ヘッドを提供することがでさる０As described above, in the present invention, the reinforcing part is integrally formed on the outside of the eraser core tip before processing the groove of the eraser core to chip, so that the eraser core tip is not damaged when forming the vortex. It is easy to process grooves. Moreover, the thickness of the tip of the erasing core can be made as thin as possible, which makes it possible to provide a magnetic head that enables high-density variable recording and (as well as) miniaturization of magnetic disks.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は従来の磁気ヘッドの分解斜視図、第２図は従来
の磁気ヘッドで消去コア先端部が肉厚の場合の磁気ヘッ
ドの要部正面図、第３図は従来の磁仮、ヘッドで？１８
１去コア先端部が肉薄の場合の消失コア対チツ７′のｆ
ｌｌｌｊｌｌｌ用４図は本発明の実施例に係る磁気ヘッ
ドの分解？１視図、第５図はその磁気ヘッドの要部正面
図、第６図（Ｊその磁気ヘッドに用いろ消去コア対チッ
プの側面図、第７図、第８図、第９図、東１０図、第１
１図、第１２図、第１３図ならびに第１４図はその消去
コア対チップの脚台工程を説明するための斜視図である
。 ４・・・・・・記録再生コア、６・・・・・・消去コア
対チツフ”、７・・・・・・消失コア、８・・・・・・
連結材、９・・・・・・溝部、１０・・・・・・先端部
、１５・・・・・・補強部。 第２図 ４ −ｗ−１ｑ 特開昭５９−７１１２５　（４） 第４図 第３図 １０、’＞ＴＦ１０ 第５図 ４ 第７図 ２ 第６図 第８図 ２ 第９図 第１１図 ／４　　　　／４Figure 1 is an exploded perspective view of a conventional magnetic head, Figure 2 is a front view of the main parts of a conventional magnetic head with a thick erase core tip, and Figure 3 is a conventional magnetic head. in? 18
1) f of the vanishing core vs. chip 7' when the tip of the core is thin
Illjllll Figure 4 shows the disassembly of the magnetic head according to the embodiment of the present invention? 1 is a perspective view, FIG. 5 is a front view of the main parts of the magnetic head, and FIG. 6 is a side view of the erase core pair used in the magnetic head. Figure, 1st
1, FIG. 12, FIG. 13, and FIG. 14 are perspective views for explaining the step of mounting the erase core pair to the chip. 4...Recording/reproduction core, 6...Erased core vs. chip, 7...Disappeared core, 8...
Connecting material, 9...Groove portion, 10...Tip portion, 15...Reinforcement portion. Fig. 2 4 -w-1q JP-A-59-71125 (4) Fig. 4 Fig. 3 Fig. 10, '>TF10 Fig. 5 4 Fig. 7 2 Fig. 6 Fig. 8 Fig. 2 Fig. 9 Fig. 11/ 4/4

Claims (1)

【特許請求の範囲】[Claims] 肉薄の先端部を有する２個分の消失コアを非磁性連結材
で連結して消去コア対チップを構成し、その消去コア対
チップの磁気記録媒体と対向する側の中央部に設けられ
た溝部に記録再生コアの一部を挿入することにより、そ
の記録再生コアの両側にそれぞれ前記消去コアが配置さ
れた形態になる磁気ヘッドにおいて、前記消去コア対チ
ップの溝部加工前に、消失コア先端部の外側に非磁性材
からなる補強部を消失コア先端部と一体に形成したこと
を特徴とする磁気ヘッドの製造方法。An erasing core pair chip is constructed by connecting two erasing cores each having a thin tip with a non-magnetic connecting material, and a groove portion is provided in the center of the erasing core pair chip on the side facing the magnetic recording medium. In a magnetic head in which the erasing cores are arranged on both sides of the recording/reproducing core by inserting a part of the recording/reproducing core into the chip, the tip of the erasing core is A method of manufacturing a magnetic head, characterized in that a reinforcing part made of a non-magnetic material is formed integrally with the distal end of the vanishing core.
JP57181479A 1982-10-18 1982-10-18 Manufacture of magnetic head Granted JPS5971125A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP57181479A JPS5971125A (en) 1982-10-18 1982-10-18 Manufacture of magnetic head
KR1019830004255A KR840006864A (en) 1982-10-18 1983-09-09 Manufacturing method of the magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57181479A JPS5971125A (en) 1982-10-18 1982-10-18 Manufacture of magnetic head

Publications (2)

Publication Number Publication Date
JPS5971125A true JPS5971125A (en) 1984-04-21
JPS638526B2 JPS638526B2 (en) 1988-02-23

Family

ID=16101471

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57181479A Granted JPS5971125A (en) 1982-10-18 1982-10-18 Manufacture of magnetic head

Country Status (2)

Country Link
JP (1) JPS5971125A (en)
KR (1) KR840006864A (en)

Also Published As

Publication number Publication date
KR840006864A (en) 1984-12-03
JPS638526B2 (en) 1988-02-23

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