JPS6151325B2 - - Google Patents

Info

Publication number
JPS6151325B2
JPS6151325B2 JP3772378A JP3772378A JPS6151325B2 JP S6151325 B2 JPS6151325 B2 JP S6151325B2 JP 3772378 A JP3772378 A JP 3772378A JP 3772378 A JP3772378 A JP 3772378A JP S6151325 B2 JPS6151325 B2 JP S6151325B2
Authority
JP
Japan
Prior art keywords
core
core portion
core block
groove
back 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
Application number
JP3772378A
Other languages
Japanese (ja)
Other versions
JPS54130113A (en
Inventor
Hisahiro Hanaoka
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.)
Olympus Corp
Original Assignee
Olympus Optical 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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP3772378A priority Critical patent/JPS54130113A/en
Priority to DE19792912309 priority patent/DE2912309A1/en
Publication of JPS54130113A publication Critical patent/JPS54130113A/en
Publication of JPS6151325B2 publication Critical patent/JPS6151325B2/ja
Granted legal-status Critical Current

Links

Description

【発明の詳細な説明】 この発明は高精度な多素子磁気ヘツドの製造方
法に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a highly accurate multi-element magnetic head.

従来多素子磁気ヘツドの製造方法には一つ一つ
のコアを積層して形成する方法や比較的新しい方
法としては特開昭53−1010号公報に示すようにフ
ロントコアブロツクとバツクコアブロツクとを
夫々別個に形成し、それらを衝合させた後、所定
の工程をへて多素子磁気ヘツドを製造するように
している。
Conventional methods for manufacturing multi-element magnetic heads include a method of stacking each core one by one, and a relatively new method of manufacturing a front core block and a back core block as shown in Japanese Patent Application Laid-open No. 1010/1983. After forming each magnetic head separately and abutting them, a predetermined process is performed to manufacture a multi-element magnetic head.

しかしながら前者の磁気ヘツドはトラツク位置
あるいはギヤツプのアラインメント等が狂いやす
くまた後者にあつてはギヤツプのアラインメント
やトラツク位置精度は出るが、寸法精度の極めて
厳しい溝加工をフロントコア部ならびにバツクコ
ア部の2回に分けて行う必要があり、高度な加工
精度を要求され生産性が劣化すると共に、2つの
コアブロツクを接合した際の相互のズレを発生さ
せるおそれがあり、磁気ヘツドの性能上大きな問
題を有していた。
However, the former type of magnetic head tends to cause track position or gap alignment to go awry, while the latter type has good gap alignment and track position accuracy, but groove machining with extremely strict dimensional accuracy is required twice on the front core and back core. This requires a high level of machining accuracy, which reduces productivity, and there is a risk of mutual misalignment when the two core blocks are joined, which poses a major problem in terms of the performance of the magnetic head. was.

この発明は上記の問題を解決し、コアブロツク
の溝切加工をフロントコアとバツクコアを一体に
接合した状態で、両者を一度に加工する事により
生産性を高めると共に性能向上をも計り得る多素
子磁気ヘツドの製造方法を提供する事にある。
This invention solves the above-mentioned problems, and by machining the front core and the back core at the same time in the condition that they are integrally joined, the multi-element magnetic material can increase productivity and improve performance. The purpose of this invention is to provide a method for manufacturing a head.

以下この発明の一実施例を図面を参照しつつ説
明する。第1図に示すように酸化物強磁性体より
なるコアブロツク1は対称的な一対のコア1a,
1bを衝合させ、そのフロントコア部ではギヤツ
プを形成するガラス材等を溶着させ、かつバツク
コア部3はエポキシ樹脂等により一体に接着され
ている。上記の如く形成したコアブロツク1を第
2図に示すように、ダイヤモンド砥石等のカツタ
ーで複数の溝6を所定の間隔で形成する。
An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a core block 1 made of oxide ferromagnetic material has a pair of symmetrical cores 1a,
1b are abutted against each other, a glass material or the like forming the gap is welded to the front core part, and the back core part 3 is bonded together with epoxy resin or the like. As shown in FIG. 2, the core block 1 formed as described above is formed with a plurality of grooves 6 at predetermined intervals using a cutter such as a diamond grindstone.

この溝6は一つのコアブロツク1から複数のト
ラツクを形成するために穿つもので、この溝6に
よつてトラツク部4とシールド部5に分けられ
る。しかる後、コアブロツク1と熱膨張係数等の
物理的特性の類似したセラミツク等の非磁性体基
板7を上記コアブロツク1のバツクコア部3に接
着する。上記コアブロツク1の溝6には更に上記
非磁性体基板7と同様な材質からなる非磁性体板
8を挿入し、夫々を低融点ガラスまたはエポキシ
樹脂等で第3図に示すように接着する。
This groove 6 is bored in order to form a plurality of tracks from one core block 1, and is divided into a track portion 4 and a shield portion 5 by this groove 6. Thereafter, a non-magnetic substrate 7 made of ceramic or the like having similar physical properties such as thermal expansion coefficient to the core block 1 is adhered to the back core portion 3 of the core block 1. A nonmagnetic plate 8 made of the same material as the nonmagnetic substrate 7 is further inserted into the groove 6 of the core block 1, and each is adhered with low melting point glass or epoxy resin as shown in FIG.

このように非磁性体基板7を接着したコアブロ
ツク1を第3図A−Aで示す部分から2つに切断
して第4図ないし第5図に示す如きフロントコア
ブロツク9とバツクコアブロツク10を形成す
る。第4図のフロントコアブロツク9はトラツク
を形成するフロントコア2aと磁気シールド5a
との間に切溝6aが形成されており、その溝6a
内に上記非磁性体基板7と同様な物理特性を有す
非磁性体板11を挿入し接着固定する。
The core block 1 to which the non-magnetic substrate 7 is bonded in this way is cut into two from the portion shown in FIG. 3 A-A to form a front core block 9 and a back core block 10 as shown in FIGS. 4 and 5. Form. A front core block 9 in FIG. 4 includes a front core 2a forming a track and a magnetic shield 5a.
A cut groove 6a is formed between the groove 6a and the groove 6a.
A non-magnetic plate 11 having the same physical properties as the non-magnetic substrate 7 is inserted and fixed by adhesive.

第5図のバツクコアブロツク10も同様に溝6
bによりバツクコア脚部3aとシールド5bとに
分けられる。上記バツクコア10は第6図に示す
ようにその磁気シールド5bをダイヤモンド砥石
などで非磁性体板8の高さまで切り下げる。この
切削精度は溝6の切削精度に比較すると極めて楽
なものである。
Similarly, the back core block 10 in FIG.
b is divided into a back core leg portion 3a and a shield 5b. As shown in FIG. 6, the magnetic shield 5b of the back core 10 is cut down to the height of the non-magnetic plate 8 using a diamond grindstone or the like. This cutting accuracy is extremely easy compared to the cutting accuracy of the groove 6.

このように形成したバツクコア10に第7図に
示すようなコイル12を夫々のバツクコア脚部3
aに装填しエポキシ樹脂等で接着する。上記バツ
クコア10の夫々の脚部3aにコイル12を挿入
した後、フロントコアブロツク9とバツクコアブ
ロツク10の衝合面を鏡面研摩した後、第8図に
示すように重合し、接着剤で接着して多素子磁気
ヘツド要素を形成する。
A coil 12 as shown in FIG. 7 is attached to each of the back core legs 3 on the back core 10 thus formed.
a and adhere with epoxy resin, etc. After inserting the coil 12 into each leg 3a of the back core 10, the abutting surfaces of the front core block 9 and the back core block 10 are polished to a mirror finish, and then polymerized and bonded with adhesive as shown in FIG. to form a multi-element magnetic head element.

この後上記フロントコアブロツクを第9図に示
す如くテープ摺接面をR研摩し、所定のケース等
に入れて一個の多素子磁気ヘツドを形成する。
Thereafter, the tape sliding surface of the front core block is ground as shown in FIG. 9, and then placed in a predetermined case or the like to form one multi-element magnetic head.

このようにすれば、フロントコアとバツクコア
を一体にした状態で一度にフロントコアおよびバ
ツクコアにいたる溝加工を施し、その後フロント
コアとバツクコアに分離するようにしたので寸法
精度が厳しく要求されても、例えば巾が約0.27mm
程度の極めて狭く高精度の加工が要求されても溝
加工を一度ですませることができ、かかる作業能
率を高め生産性の向上を図ることができる。また
分離したのちのバツクコアにコイルを装填するよ
うにもしているのでコイルのターン数に関係な
く、かかるコイルを短時間で組込むこともでき
る。さらに一度分離したフロントコアとバツクコ
アを再び接合するときも一諸に切つた溝を合せる
のでトラツクの位置出しなどを容易に行なうこと
ができ、これによりギヤツプのアラインメントや
トラツクの位置出し精度を向上させることがで
き、高性能な磁気ヘツドが得られる利点もある。
In this way, the front core and back core are integrated and the grooves are machined to the front core and back core at the same time, and then the front core and back core are separated, so even if strict dimensional accuracy is required, For example, the width is about 0.27mm
Even if extremely narrow and highly accurate machining is required, the groove machining can be done only once, thereby increasing work efficiency and productivity. Further, since the coil is loaded into the back core after being separated, such a coil can be assembled in a short time regardless of the number of turns of the coil. Furthermore, when rejoining the front and back cores that have been separated, the grooves cut in one line are aligned, making it easier to position the tracks, thereby improving gap alignment and track positioning accuracy. There is also the advantage that a high-performance magnetic head can be obtained.

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

第1図乃至第9図はこの発明の製造方法の工程
を示すもので、第1図はフロントコアの斜視図、
第2図はコアブロツクに溝を穿つて複数のトラツ
クに分割したコアブロツク斜視図、第3図はコア
ブロツクに基板を接着し側面図、第4図はフロン
トコアブロツク、第5図はバツクコアブロツク、
第6図はシールドを切削したバツクコア側面図、
第7図はバツクコアにコイルを巻装する状態の斜
視図、第8図は多素子磁気ヘツド要素の側面図、
第9図は多素子磁気ヘツドの研摩状態説明図であ
る。 1…コアブロツク、2…フロントコア部、2a
…フロントコア、3…バツクコア部、3a…バツ
クコア、4…トラツク、5,5a,5b…シール
ド、6,6a,6b…溝、7…非磁性体基板、
8,11…非磁性体板。
1 to 9 show the steps of the manufacturing method of the present invention, and FIG. 1 is a perspective view of the front core;
Fig. 2 is a perspective view of the core block divided into a plurality of tracks by cutting grooves in the core block, Fig. 3 is a side view of the core block with a substrate bonded to it, Fig. 4 is the front core block, and Fig. 5 is the back core block.
Figure 6 is a side view of the back core with the shield cut out.
FIG. 7 is a perspective view of the back core with the coil wound around it, FIG. 8 is a side view of the multi-element magnetic head element,
FIG. 9 is an explanatory diagram of the polishing state of the multi-element magnetic head. 1...Core block, 2...Front core part, 2a
...Front core, 3... Back core part, 3a... Back core, 4... Track, 5, 5a, 5b... Shield, 6, 6a, 6b... Groove, 7... Nonmagnetic substrate,
8, 11...Nonmagnetic plate.

Claims (1)

【特許請求の範囲】[Claims] 1 フロントコア部とバツクコア部とを一体的に
形成したコアブロツクのバツクコア部よりフロン
トコア部に亘りフロントコア部先端部を残して溝
を加工する工程と、前記溝を形成したコアブロツ
クのバツクコア部に非磁性体基板を接着する工程
と、前記非磁性体基板を接着したコアブロツクの
フロントコア部とバツクコア部に分離する工程
と、前記フロントコア部とバツクコア部を接合す
る工程とを具備したことを特徴とする多素子磁気
ヘツドの製造方法。
1 A step of machining a groove from the back core portion to the front core portion of a core block in which a front core portion and a back core portion are integrally formed, leaving the tip of the front core portion, and forming a groove in the back core portion of the core block where the groove is formed It is characterized by comprising the steps of bonding a magnetic substrate, separating the core block to which the non-magnetic substrate is bonded into a front core portion and a back core portion, and joining the front core portion and back core portion. A method for manufacturing a multi-element magnetic head.
JP3772378A 1978-03-28 1978-03-31 Production of multielement magnetic head Granted JPS54130113A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP3772378A JPS54130113A (en) 1978-03-31 1978-03-31 Production of multielement magnetic head
DE19792912309 DE2912309A1 (en) 1978-03-28 1979-03-28 Multiple magnetic tape recorder head construction - involves forming groove parts in core block with air gap as alternate thick and thin prongs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3772378A JPS54130113A (en) 1978-03-31 1978-03-31 Production of multielement magnetic head

Publications (2)

Publication Number Publication Date
JPS54130113A JPS54130113A (en) 1979-10-09
JPS6151325B2 true JPS6151325B2 (en) 1986-11-08

Family

ID=12505413

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3772378A Granted JPS54130113A (en) 1978-03-28 1978-03-31 Production of multielement magnetic head

Country Status (1)

Country Link
JP (1) JPS54130113A (en)

Also Published As

Publication number Publication date
JPS54130113A (en) 1979-10-09

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