JPH0827892B2 - Manufacturing method of magnetic head - Google Patents
Manufacturing method of magnetic headInfo
- Publication number
- JPH0827892B2 JPH0827892B2 JP61189912A JP18991286A JPH0827892B2 JP H0827892 B2 JPH0827892 B2 JP H0827892B2 JP 61189912 A JP61189912 A JP 61189912A JP 18991286 A JP18991286 A JP 18991286A JP H0827892 B2 JPH0827892 B2 JP H0827892B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- groove
- thin film
- magnetic head
- manufacturing
- 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 - Lifetime
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は磁気記録・再生装置用の磁気ヘツドの製造方
法に関する。The present invention relates to a method of manufacturing a magnetic head for a magnetic recording / reproducing apparatus.
従来の、磁気ギヤツプ対向面に磁性薄膜を具備する磁
気ヘツドの製造方法は、前記磁性薄膜を成膜した面に加
工を加えず磁気ギヤツプを形成しつつ接合部材を用いて
２体の磁性体ブロツクを接合していた。このため特開昭
53−47811により第７図、第８図、第９図に示すように
磁性薄膜１を具備する磁性体ブロツク２及び３を磁気ギ
ヤツプ５及び10を形成しつつ接合部材４により接合して
いるという構造になつていた。また特開昭60−154310に
より第９図に示す構造も前記の工程により作製されたも
のである。A conventional method of manufacturing a magnetic head having a magnetic thin film on a surface facing a magnetic gear is to form a magnetic gear without processing the surface on which the magnetic thin film is formed, and use a joining member to form two magnetic material blocks. Were joined. For this reason
According to 53-47811, the magnetic material blocks 2 and 3 having the magnetic thin film 1 are joined by the joining member 4 while forming the magnetic gears 5 and 10 as shown in FIGS. 7, 8 and 9. It was structured. The structure shown in FIG. 9 according to JP-A-60-154310 is also manufactured by the above steps.
しかし従来の技術では接合部材４を磁性薄膜１に直接
に接合するために接合強度が小さく第８図、第９図に示
す如く接合部材４の中にクラツク（ひび割れ）が発生し
たり、あるいは接合部からブロツクが２つに割れてしま
うという問題点を有していた。そこで本発明はこのよう
な問題点を解決するもので、その目的とするところは、
磁気ギヤツプ対向面に磁性薄膜を具備する磁気ヘツドの
前記磁気ギヤツプ対向面の接合強度を大きくする製造方
法を提供するところにある。However, in the conventional technique, since the joining member 4 is directly joined to the magnetic thin film 1, the joining strength is small and cracks (cracks) occur in the joining member 4 as shown in FIG. 8 and FIG. There was a problem that the block was broken into two parts. Therefore, the present invention solves such a problem, and its purpose is to:
Another object of the present invention is to provide a manufacturing method for increasing the bonding strength of the magnetic head facing surface of a magnetic head having a magnetic thin film on the magnetic gear facing surface.
本発明の磁気ヘッドの製造方法は、第１磁性体ブロッ
クと第２磁性体ブロックを磁性薄膜を成膜した面を対向
させ磁気ギャップを有するように接合部材を用いて接合
した磁気ヘッドの製造方法において、前記第１磁性体ブ
ロックと前記第２磁性体ブロックのそれぞれは次の工
程、すなわち、 磁性体コアに前記磁性薄膜を成膜する面に平行して２
本の第１の溝を形成する工程と、 上記工程を経た磁性体コアに第１の溝を形成した面に
磁性体薄膜を形成する工程と、 上記工程を経た磁性体コアに、前記平行した２本の第
１の溝にまたがって平行して第２の溝を、溝の幅及び深
さが前記第１の溝よりもそれぞれ大きく形成する工程、 を経たものであることを特徴とする。A method of manufacturing a magnetic head according to the present invention is a method of manufacturing a magnetic head, in which a first magnetic material block and a second magnetic material block are bonded to each other by using a bonding member so that surfaces having a magnetic thin film formed thereon face each other and have a magnetic gap. In the first step, each of the first magnetic body block and the second magnetic body block is subjected to the next step, that is, in parallel with the surface on which the magnetic thin film is formed on the magnetic core.
A step of forming a first groove of the book; a step of forming a magnetic thin film on a surface of the magnetic core that has undergone the above steps on which the first grooves have been formed; The step of forming the second groove in parallel with the two first grooves so that the width and depth of the groove are larger than those of the first groove, respectively.
第１図は本発明における一実施例による製造方法によ
り作製された磁気ヘツドの側面図であり、第２図、第３
図は２体の磁性体ブロツク12と19に副たる逃げ溝11と磁
性薄膜１と主たる逃げ溝７を加工する工程を説明する斜
視図である。第２図（ａ）は本実施例の加工をする前の
磁性体コアの斜視図であり、第２図（ｂ）は副たる逃げ
溝11を加工した磁性体ブロツク12の斜視図である。また
第２図（ｃ）は前記磁性体ブロツク12の副たる逃げ溝11
を具備する面13に磁性薄膜１を成膜した後の磁性体ブロ
ツク12の斜視図である。第２図（ｃ）において磁性薄膜
１は副たる逃げ溝11のために段差が生じ連続した一面に
ならない。第２図（ｄ）は主たる逃げ溝７を形成した磁
性体ブロツク12の斜視図である。副たる逃げ溝11のため
に磁性薄膜１は不連続になつているためギヤツプデプス
15を測定するための稜線16は主たる逃げ溝７を加工する
ときの大きな研削抵抗により割れ等がなく正確に測定す
ることができる。また主たる逃げ溝７を加工するときに
研削砥石の磨耗により磁性薄膜１を剥離させた場合でも
前記膜の剥離は副たる逃げ溝11のところで止まり（膜が
不連続なため）、フロントギヤツプ対向面17やリアギヤ
ツプ対向面18にまで拡大しない。即ち副たる逃げ溝11を
磁性薄膜１の成膜前に形成してあるので主たる逃げ溝７
の加工はそれほど厳しく管理する必要がなくなる。FIG. 1 is a side view of a magnetic head manufactured by a manufacturing method according to an embodiment of the present invention, and FIGS.
The figure is a perspective view for explaining a step of processing the secondary escape groove 11, the magnetic thin film 1 and the main escape groove 7 in the two magnetic blocks 12 and 19. 2 (a) is a perspective view of the magnetic core before processing of this embodiment, and FIG. 2 (b) is a perspective view of the magnetic block 12 in which the secondary relief groove 11 is processed. Further, FIG. 2 (c) shows a secondary relief groove 11 of the magnetic block 12.
FIG. 6 is a perspective view of the magnetic block 12 after the magnetic thin film 1 is formed on the surface 13 provided with. In FIG. 2 (c), the magnetic thin film 1 has a step due to the secondary relief groove 11 and does not form a continuous surface. FIG. 2D is a perspective view of the magnetic block 12 in which the main escape groove 7 is formed. Since the magnetic thin film 1 is discontinuous due to the secondary relief groove 11, the gear cup depth is increased.
The ridge line 16 for measuring 15 can be accurately measured without cracks or the like due to a large grinding resistance when the main relief groove 7 is processed. Further, even when the magnetic thin film 1 is peeled off due to the abrasion of the grinding wheel when the main relief groove 7 is processed, the peeling of the film stops at the secondary relief groove 11 (because the film is discontinuous), and the front gearup facing surface 17 And do not expand to the rear gear facing surface 18. That is, since the sub relief groove 11 is formed before the magnetic thin film 1 is formed, the main relief groove 7 is formed.
Processing does not need to be so strictly controlled.
また第３図（ａ），（ｂ），（ｃ），（ｄ）は各々第
２図（ａ），（ｂ），（ｃ），（ｄ）の工程に相当する
ものである。第４図は第２図、第３図で形成された磁性
体ブロツク12と19を接合部材４により接合することを示
す斜視図である。接合部材４は第１図の磁気ヘツドに示
す主たる接合部分８において磁性体ブロツク12と13に拡
散接合するために非常に高い接合強度を持たせることが
可能になる。Further, FIGS. 3 (a), (b), (c), and (d) correspond to the steps of FIGS. 2 (a), (b), (c), and (d), respectively. FIG. 4 is a perspective view showing that the magnetic material blocks 12 and 19 formed in FIGS. 2 and 3 are joined by the joining member 4. Since the joining member 4 is diffusion-joined to the magnetic material blocks 12 and 13 at the main joining portion 8 shown in the magnetic head of FIG. 1, it is possible to give very high joining strength.
また本実施例においては副たる逃げ溝11と主たる逃げ
溝７が段差を作つているので接合のためのセツトのとき
に接合部材４を置きやすいという特徴も有する。Further, in this embodiment, since the sub escape groove 11 and the main escape groove 7 form a step, the joining member 4 can be easily placed at the time of setting for joining.
第５図は本発明による別の実施例であり、リアギヤツ
プ10にも接合部材４をつけて接合している。この場合接
合強度はよりいつそう大きくできる。また第６図は本発
明による別の実施例であり、磁性薄膜１は片側のブロツ
クにのみ成膜されている。このため副たる逃げ溝11も磁
性薄膜１の成膜されているブロツクについているだけで
ある。ただし主たる接合部分８を作るための主たる逃げ
溝７は両方のブロツクに設けてある。FIG. 5 shows another embodiment according to the present invention, in which the rear gear cup 10 is also joined with the joining member 4. In this case, the bonding strength can be increased so much. FIG. 6 shows another embodiment according to the present invention, in which the magnetic thin film 1 is formed only on one block. Therefore, the secondary relief groove 11 is only attached to the block on which the magnetic thin film 1 is formed. However, the main relief groove 7 for making the main joint portion 8 is provided in both blocks.
以上のように主たる逃げ溝７は磁性体ブロツク12及び
19と接合部材４とが拡散接合することにより接合強度の
高い、磁性薄膜１をギヤツプ対向面に具備する磁気ヘツ
ドを提供するためのものであり、一方副たる逃げ溝11は
主たる逃げ溝７の加工を助ける役をしている。As described above, the main clearance groove 7 is formed of the magnetic block 12 and
19 and the bonding member 4 are diffusion bonded to provide a magnetic head having a magnetic thin film 1 having a high bonding strength on the facing surface of the gear, while the secondary escape groove 11 is the main escape groove 7 of the main escape groove 7. It plays a role in helping processing.
さて３つの実施例において本発明の特徴であるところ
の副たる逃げ溝と主たる逃げ溝の加工はスライシングマ
シーン等による機械的加工をしているが、この他の方法
としてはレーザー加工等も考えられる。また化学エツチ
ングを併用したレーザー加工によつても可能である。ま
た磁性体ブロツク12及び19はMn−Znフエライトを用いた
がNi−Nnフエライトでもよい。また磁性薄膜はセンダス
トを用いたがアモルフアス系のCo−Zr−Nb膜やパーマロ
イ膜でも可能である。成膜方法は本実施例ではスパツタ
リング法を用いたが蒸着法でも可能であるしパーマロイ
膜の場合はメツキ法でもよい。In the three embodiments, the sub relief groove and the main relief groove, which are the features of the present invention, are machined by a slicing machine or the like, but laser machining or the like can be considered as another method. . It is also possible to perform laser processing together with chemical etching. Further, although the magnetic substance blocks 12 and 19 use Mn-Zn ferrite, Ni-Nn ferrite may be used. Further, although sendust was used as the magnetic thin film, an amorphous Co-Zr-Nb film or a permalloy film can also be used. Although the sputtering method is used as the film forming method in the present embodiment, it is also possible to use the vapor deposition method, and in the case of the permalloy film, the plating method may be used.
以上の如く、本発明の磁気ヘッドの製造方法は、第１
磁性体ブロックと第２磁性体ブロックを磁性薄膜を成膜
した面を対向させ磁気ギャップを有するように接合部材
を用いて接合した磁気ヘッドの製造方法において、前記
第１磁性体ブロックと前記第２磁性体ブロックのそれぞ
れは次の工程、すなわち、 磁性体コアに前記磁性薄膜を成膜する面に平行して２
本の第１の溝を形成する工程と、 上記工程を経た磁性体コアに第１の溝を形成した面に
磁性体薄膜を形成する工程と、 上記工程を経た磁性体コアに、前記平行した２本の第
１の溝にまたがって平行して第２の溝を、溝の幅及び深
さが前記第１の溝よりもそれぞれ大きく形成する工程、 を経たものであるようにしたから、 ・ギャップデブスは第１の溝により決められ、第１の溝
の幅、深さとも第２の溝よりも小さく設定できるので、
ギャプデブスの稜線は欠け等の形状欠陥がなく平滑な稜
線が得られ、 ・第２の溝は平行した２本の題１の溝にまたがって平行
して、溝の幅及び深さが第の溝よりも小さくしたので、
第２の溝の稜線で磁性薄膜のちぎれ等が生じても第１の
溝の底面に留まり第１の溝の稜線の磁性薄膜にはちぎれ
等の欠陥は生じなくなった。As described above, the method of manufacturing the magnetic head of the present invention is the first
In a method of manufacturing a magnetic head, wherein a magnetic material block and a second magnetic material block are bonded together by using a bonding member so that the surfaces on which the magnetic thin films are formed are opposed to each other, and the first magnetic material block and the second magnetic material block are bonded together. Each of the magnetic blocks is subjected to the next step, that is, 2 steps parallel to the surface on which the magnetic thin film is formed on the magnetic core.
A step of forming a first groove of the book; a step of forming a magnetic thin film on a surface of the magnetic core that has undergone the above steps on which the first grooves have been formed; The second groove is formed in parallel over the two first grooves so that the width and the depth of the groove are larger than those of the first groove, respectively. The gap depth is determined by the first groove, and the width and depth of the first groove can be set smaller than that of the second groove,
The ridge line of the gap debs has no shape defect such as chipping, and a smooth ridge line is obtained. The second groove is parallel over the two parallel grooves of the title 1, and the width and depth of the groove are the first groove. I made it smaller than
Even if the magnetic thin film was torn off at the ridgeline of the second groove, the magnetic thin film stayed on the bottom surface of the first groove and the magnetic thin film at the ridgeline of the first groove was free from defects such as tearing.
・更に、第１の溝と第２の溝を形成したので接合面積が
増加し、第１及び第２磁性体ブロックを接合部材を用い
て接合する際に接着強度の強い整合が得られるという特
有の効果を有する。-Furthermore, since the first groove and the second groove are formed, the bonding area is increased, and when the first and second magnetic material blocks are bonded using a bonding member, a strong matching of the bonding strength is obtained. Have the effect of.
第１図は本発明での一実施例により作られた磁気ヘツド
の側面図。 第２図（ａ）〜（ｄ）は本実施例の工程を示す斜視図。 第３図（ａ）〜（ｄ）は本実施例の工程を示す斜視図。 第４図は本実施例の接合工程を示す斜視図。 第５図は本発明での別の実施例により作られた磁気ヘツ
ドの側面図。 第６図は本発明での別の実施例により作られた磁気ヘツ
ドの側面図。 第７図は従来技術による磁気ヘツドの斜視図。 第８図は第７図におけるフロントギヤツプの拡大正面
図。 第９図は従来技術による磁気ヘツドの斜視図。 １……磁性薄膜 ２……磁性体コア ３……磁性体コア ４……接合部材 ５……フロントギヤツプ ６……磁気ヘツド ７……主たる逃げ溝 ８……主たる接合部分 ９……コイル線 10……リアギヤツプ 11……副たる逃げ溝 12……磁性体ブロツク 13……成膜面 14……主たる逃げ溝の切断目標 15……ギヤツプデプス 16……ギヤツプデプスを示す稜線 17……フロントギヤツプの対向面 18……リアギヤツプの対向面 19……磁性体ブロツク 20……クラツクFIG. 1 is a side view of a magnetic head made according to an embodiment of the present invention. 2A to 2D are perspective views showing the steps of this embodiment. FIGS. 3A to 3D are perspective views showing the steps of this embodiment. FIG. 4 is a perspective view showing a joining process of this embodiment. FIG. 5 is a side view of a magnetic head made according to another embodiment of the present invention. FIG. 6 is a side view of a magnetic head made according to another embodiment of the present invention. FIG. 7 is a perspective view of a conventional magnetic head. FIG. 8 is an enlarged front view of the front gear cup in FIG. FIG. 9 is a perspective view of a conventional magnetic head. 1 ... Magnetic thin film 2 ... Magnetic core 3 ... Magnetic core 4 ... Joining member 5 ... Front gear 6 ... Magnetic head 7 ... Main escape groove 8 ... Main joining portion 9 ... Coil wire 10 ... … Rear gear cup 11 …… Subordinate relief groove 12 …… Magnetic material block 13 …… Film forming surface 14 …… Main relief groove cutting target 15 …… Gear up depth 16 …… Ridge line indicating gear up depth 17 …… Front gear top facing surface 18… … Opposite surface of rear gear 19… Magnetic block 20… Crack
Claims (1)
を磁性薄膜を成膜した面を対向させ磁気ギャップを有す
るように接合部材を用いて接合した磁気ヘッドの製造方
法において、前記第１磁性体ブロックと前記第２磁性体
ブロックのそれぞれは次の工程、すなわち、 磁性体コアに前記磁性薄膜を成膜する面に平行して２本
の第１の溝を形成する工程と、 上記工程を経た磁性体コアに第１の溝を形成した面に磁
性体薄膜を形成する工程と、 上記工程を経た磁性体コアに、前記平行した２本の第１
の溝にまたがって平行して第２の溝を、溝の幅及び深さ
が前記第１の溝よりもそれぞれ大きく形成する工程、 を経たものであることを特徴とする磁気ヘッドの製造方
法。1. A method of manufacturing a magnetic head, wherein a first magnetic body block and a second magnetic body block are bonded to each other by using a bonding member so that surfaces having a magnetic thin film formed thereon face each other and have a magnetic gap. Each of the magnetic body block and the second magnetic body block is subjected to the following step, that is, a step of forming two first grooves parallel to the surface on which the magnetic thin film is formed on the magnetic body core, and the above step. The step of forming a magnetic thin film on the surface of the magnetic core on which the first groove is formed, and the two parallel first cores on the magnetic core that has undergone the above steps.
Forming the second groove in parallel with the groove and having a width and a depth larger than those of the first groove, respectively.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61189912A JPH0827892B2 (en) | 1986-08-13 | 1986-08-13 | Manufacturing method of magnetic head |
| US07/866,090 US5245488A (en) | 1986-08-13 | 1992-04-06 | Low-noise composite magnetic head for recording and producing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61189912A JPH0827892B2 (en) | 1986-08-13 | 1986-08-13 | Manufacturing method of magnetic head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6346608A JPS6346608A (en) | 1988-02-27 |
| JPH0827892B2 true JPH0827892B2 (en) | 1996-03-21 |
Family
ID=16249289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61189912A Expired - Lifetime JPH0827892B2 (en) | 1986-08-13 | 1986-08-13 | Manufacturing method of magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0827892B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160038374A (en) * | 2014-09-30 | 2016-04-07 | 부경대학교 산학협력단 | Coil winding machine of BLDC driven by active real-time tension control |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0827898B2 (en) * | 1988-03-29 | 1996-03-21 | 日立金属株式会社 | Floating type composite magnetic head and its magnetic core |
| JP2594168B2 (en) * | 1989-06-20 | 1997-03-26 | 三洋電機株式会社 | Floating magnetic head |
| WO1994011862A1 (en) * | 1992-11-11 | 1994-05-26 | Japan Energy Corporation | Magnetic head |
| WO1994018671A1 (en) * | 1993-02-12 | 1994-08-18 | Datacard Corporation | Magnetic stripe read/write head |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS598120A (en) * | 1982-07-05 | 1984-01-17 | Sharp Corp | Production of magnetic head |
| JPH0785288B2 (en) * | 1986-07-29 | 1995-09-13 | ソニー株式会社 | Magnetic head manufacturing method |
-
1986
- 1986-08-13 JP JP61189912A patent/JPH0827892B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160038374A (en) * | 2014-09-30 | 2016-04-07 | 부경대학교 산학협력단 | Coil winding machine of BLDC driven by active real-time tension control |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6346608A (en) | 1988-02-27 |
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