JPH0276108A - Production of magnetic head - Google Patents
Production of magnetic headInfo
- Publication number
- JPH0276108A JPH0276108A JP22820988A JP22820988A JPH0276108A JP H0276108 A JPH0276108 A JP H0276108A JP 22820988 A JP22820988 A JP 22820988A JP 22820988 A JP22820988 A JP 22820988A JP H0276108 A JPH0276108 A JP H0276108A
- Authority
- JP
- Japan
- Prior art keywords
- core
- slider
- softening point
- glass
- magnetic
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 7
- 239000011521 glass Substances 0.000 claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 8
- 239000000696 magnetic material Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 239000005388 borosilicate glass Substances 0.000 abstract description 9
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 238000009792 diffusion process Methods 0.000 abstract description 2
- 239000005355 lead glass Substances 0.000 abstract description 2
- 238000002844 melting Methods 0.000 abstract description 2
- 239000012299 nitrogen atmosphere Substances 0.000 abstract description 2
- 239000007790 solid phase Substances 0.000 abstract description 2
- 230000015556 catabolic process Effects 0.000 abstract 1
- 238000006731 degradation reaction Methods 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000156 glass melt Substances 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Magnetic Heads (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、磁気記録媒体からデータを読み出したり、磁
気記録媒体にデータを書き込んだりする磁気記録再生装
置に用いられる磁気ヘッドの製造方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method of manufacturing a magnetic head used in a magnetic recording/reproducing device that reads data from and writes data to a magnetic recording medium. .
従来の技術
第3図、第4図は従来の浮動型磁気ヘッドを示す斜視図
及び側面図である。第3図、第4図において、1はフェ
ライト等で構成されたコア、2はフェライト等で構成さ
れたスライダーで、スライダー2はコア1とともに磁気
回路を構成している。BACKGROUND ART FIGS. 3 and 4 are a perspective view and a side view of a conventional floating magnetic head. In FIGS. 3 and 4, 1 is a core made of ferrite or the like, 2 is a slider made of ferrite or the like, and the slider 2 and the core 1 form a magnetic circuit.
又、スライダー2とコア1はギャップ充填材となるほう
珪酸ガラス等を介して接合されている。この時、コア1
とスライダー2の接合面はギャップ対向面のみであり、
接合力は十分に得られないので、接合ガラス3によって
接合力の補強を行なっている。4はフロントギャップ、
5はバックギャップである。Further, the slider 2 and the core 1 are bonded to each other via borosilicate glass or the like which serves as a gap filler. At this time, core 1
The joint surface between slider 2 and slider 2 is only the gap facing surface,
Since a sufficient bonding force cannot be obtained, the bonding force is reinforced by the bonding glass 3. 4 is the front gap,
5 is the back gap.
以上の様に構成された従来の磁気ヘッドについて以下そ
の製造方法を説明する。A method of manufacturing the conventional magnetic head constructed as described above will be described below.
先ず第5図に示す様にコア及びスライダーとなるフェラ
イト等で構成された磁性ブロック6.7をそれぞれ用意
する。次に第6図に示す様に磁性ブロック6に巻線溝6
a及びフロントギャップ対肉面6b、パックギャップ対
向面6cを形成する。First, as shown in FIG. 5, magnetic blocks 6 and 7 each made of ferrite or the like are prepared as a core and a slider. Next, as shown in FIG.
a, a front gap facing meat surface 6b, and a pack gap facing surface 6c.
次に第7図に示す様にパックギャップ対向面6c及びフ
ロントギャップ対向面6bにギャップ充填材となるほう
珪酸ガラス等の材料でできたギャップ膜8を形成する。Next, as shown in FIG. 7, a gap film 8 made of a material such as borosilicate glass to serve as a gap filler is formed on the pack gap facing surface 6c and the front gap facing surface 6b.
次にギャップ膜8を介して磁性ブロック6.7が当接す
る様に磁性ブロック6.7を固定し、フロントギャップ
対向面6b側の巻線溝6aに接合用ガラス9を配置し、
加熱する。Next, the magnetic block 6.7 is fixed so that it comes into contact with the magnetic block 6.7 through the gap film 8, and the bonding glass 9 is placed in the winding groove 6a on the side facing the front gap 6b.
Heat.
この時加熱する温度は接合用ガラス9が融解する温度よ
り高く、はう珪酸ガラスが融解する温度より低くする。The heating temperature at this time is higher than the temperature at which the bonding glass 9 melts, and lower than the temperature at which the silicic acid glass melts.
この様にして磁性ブロック6.7を接合した状態を第8
図に示す。次に磁性ブロック6.7を接合したものを所
定の幅に成るようにスライス加工を行う。例えば第8図
に示す点線AB及び点線CDに沿って切削をして、第9
図に示す様なコアブロック10を切り出す。次に第10
図に示す様にコアブロック10の媒体対向面にダイヤモ
ンド砥石でスキー加工を施し、溝11.12を形成する
。次にスキー加工を施したコアブロックlOの磁性ブロ
ック6の部分を、第11図に示す様に所定のトラック幅
とおなし間隔を持って連結されている砥石で削る。第1
1図に示す回転軸EFを中心に回転させた砥石を第11
図に示す矢印G方向から磁性ブロックに当てていく。そ
して第12図に示す様な形状にしあげる。最後に媒体対
向面をラップ加工や面取りを行う。The state in which the magnetic blocks 6 and 7 are joined in this way is shown in the eighth section.
As shown in the figure. Next, the bonded magnetic blocks 6 and 7 are sliced into a predetermined width. For example, cut along dotted line AB and dotted line CD shown in FIG.
A core block 10 as shown in the figure is cut out. Then the 10th
As shown in the figure, the medium facing surface of the core block 10 is skied with a diamond grindstone to form grooves 11 and 12. Next, the portion of the magnetic block 6 of the ski-processed core block IO is ground with a grindstone connected to each other with a predetermined track width and grinding interval, as shown in FIG. 1st
The 11th grindstone rotates around the rotation axis EF shown in Figure 1.
Apply it to the magnetic block from the direction of arrow G shown in the figure. Then, it is shaped into the shape shown in FIG. Finally, the medium facing surface is lapped or chamfered.
発明が解決しようとする課題
一般的に傷の入った接合ガラス9は応力が加わると亀裂
が生じ易くなる。前記従来の構成では、スキー加工や磁
性ブロック6を削って所定のトーラック幅にする時に、
接合用ガラス9に傷が入るので、コア1の面取りを行な
ったり、コア1に巻線を巻いたりする工程で、接合ガラ
ス9に応力が加わると、コア1がスライダー2から取れ
てしまう事があった。Problems to be Solved by the Invention In general, bonded glass 9 with scratches tends to crack when stress is applied. In the conventional configuration, when processing skis or cutting the magnetic block 6 to obtain a predetermined toe rack width,
Since the bonding glass 9 will be scratched, if stress is applied to the bonding glass 9 during the process of chamfering the core 1 or winding a wire around the core 1, the core 1 may come off from the slider 2. there were.
本発明は前記従来の問題点を解決するもので、接合ガラ
スに入った傷等を修復し、コアとスライダーの接合力の
低下を防止する事ができる磁気ヘッドの製造方法を提供
する事を目的としている。The present invention solves the above-mentioned conventional problems, and an object thereof is to provide a method for manufacturing a magnetic head that can repair scratches etc. in the bonded glass and prevent a decrease in the bonding force between the core and the slider. It is said that
課題を解決するための手段
この目的を達成するために、ギャップ充填材となる非磁
性体を介して二つの磁性ブロックを接合させるとともに
、接合用ガラスで補強し、磁性ブロックを所定のトラッ
ク幅に切削した後に、接合用ガラスの軟化点よりも大き
な温度で、しかも磁気ギャップ充填材の軟化点よりも小
さな温度で熱処理を行なう工程を備えている。Means for Solving the Problem In order to achieve this objective, two magnetic blocks are bonded via a non-magnetic material that serves as a gap filler, reinforced with bonding glass, and the magnetic blocks are made into a predetermined track width. After cutting, the method includes a step of performing heat treatment at a temperature higher than the softening point of the bonding glass and lower than the softening point of the magnetic gap filler.
作 用
この構成により、接合用ガラスが軟化し、接合用ガラス
に生じた傷やチッピング等を修復する事ができる。Function: With this configuration, the glass for bonding is softened, and scratches, chipping, etc. that occur in the glass for bonding can be repaired.
実施例
以下本発明の一実施例における磁気ヘッドの製造方法に
ついて説明する。EXAMPLE A method of manufacturing a magnetic head according to an example of the present invention will be described below.
第12図に示す様に磁性ブロック6を両側面から削って
いって所定のトラック幅にする工程までは従来と同じで
ある。本実施例では接合用ガラスは低融点鉛ガラス(軟
化点515℃)、ギャップ充填材としてほう珪酸ガラス
(軟化点820℃)を用いた。すなわち第12図に示す
製作途中の磁気ヘッドを低融点鉛ガラスの軟化点515
℃からほう珪酸ガラスの軟化点820℃の範囲内で加熱
する。この時加熱は窒素雰囲気中で行なう。本実施例で
は550℃で約10分間加熱した。この時、550℃と
いうのは接合ガラスの軟化点以上であり、コアがスライ
ダーから取れてしまう事が考えられる。しかし、スライ
ダーとコアを接合する時にギ
ャップ充填材となるほう珪酸ガラスとコア及びスライダ
ーの材料となるフェライトの間で固相拡散という現象が
起こり、ある程度コアとスライダーを接合させてお(事
ができる。従って接合ガラスの軟化点以上の温度にして
もコアはスライダーから取れる事はない。この熱処理に
より軟化した接合ガラスは切削加工等によって入った傷
を修復する事ができる。As shown in FIG. 12, the process up to the step of cutting the magnetic block 6 from both sides to obtain a predetermined track width is the same as the conventional method. In this example, low melting point lead glass (softening point 515°C) was used as the bonding glass, and borosilicate glass (softening point 820°C) was used as the gap filler. In other words, the magnetic head in the process of being manufactured as shown in FIG.
℃ to the softening point of borosilicate glass of 820℃. At this time, heating is performed in a nitrogen atmosphere. In this example, heating was performed at 550° C. for about 10 minutes. At this time, 550°C is above the softening point of the bonded glass, and it is conceivable that the core may come off from the slider. However, when bonding the slider and core, a phenomenon called solid phase diffusion occurs between the borosilicate glass that serves as the gap filler and the ferrite that serves as the material for the core and slider, and it is possible to bond the core and slider to some extent. Therefore, even if the temperature is higher than the softening point of the bonded glass, the core will not come off the slider.The bonded glass softened by this heat treatment can repair scratches caused by cutting, etc.
従来例と本実施例のコアとスライダーの接合力の違いを
以下説明する。第1図は試験の要領を示す図で、本試験
はスライダーを固定し、コアに第1図に示す矢印X方向
に荷重を加えていき、コアがスライダーから取れる時の
荷重を測定したものである。この結果を第2図に示す。The difference in bonding force between the core and slider between the conventional example and this example will be explained below. Figure 1 shows the procedure for the test. In this test, the slider was fixed, a load was applied to the core in the direction of the arrow X shown in Figure 1, and the load was measured when the core was removed from the slider. be. The results are shown in FIG.
第2図に示す様に本実施例の方は荷重200g付近で、
又従来例の方では100g付近で最もコアがスライダー
から取れる回数が多かった。すなわち、熱処理を行った
方がコアとスライダーの接合力は強かった。As shown in Figure 2, in this example, the load was around 200g,
In addition, in the conventional example, the number of times the core was removed from the slider was greatest at around 100g. In other words, the bonding force between the core and slider was stronger when heat treatment was performed.
以上の様に本実施例によると、はう珪酸ガラスを介して
二つの磁性ブロックを接合ガラスで接合した後に、接合
ガラスの軟化点より高くはう珪酸ガラスの軟化点より低
い温度で熱処理を行ったので、接合ガラスに入った傷を
修復する事ができ1、コアとスライダーの接合力が低下
する事を防止できる。As described above, according to this example, after bonding two magnetic blocks with bonding glass via borosilicate glass, heat treatment is performed at a temperature higher than the softening point of the bonding glass but lower than the softening point of the borosilicate glass. Therefore, scratches in the bonded glass can be repaired (1) and the bonding strength between the core and the slider can be prevented from decreasing.
発明の効果
本発明は、ギャップ充填材となる非磁性体を介して二つ
の磁性ブロックを接合させるとともに、接合用ガラスで
補強し、磁性ブロックを所定のトラック幅に切削した後
に、接合用ガラスの軟化点よりも高く、かつ磁気ギャッ
プ充填材の軟化点よりも低い温度で熱処理を行なう工程
を備えた事により、接合用ガラスが軟化し、接合用ガラ
スに生じた傷やチッピング等を修復する事ができるので
、コアとスライダーの接合力が低下するのを防止する事
ができる。Effects of the Invention The present invention connects two magnetic blocks through a non-magnetic material serving as a gap filler, reinforces them with bonding glass, and cuts the magnetic blocks to a predetermined track width. Equipped with a heat treatment process at a temperature higher than the softening point and lower than the softening point of the magnetic gap filler, the glass for bonding is softened and scratches, chipping, etc. that occur on the glass for bonding can be repaired. This can prevent the bonding force between the core and the slider from decreasing.
第1図は試験方法を示す平面図、第2図は従来例と本実
施例のコアとスライダーの接合力の違いを示すグラフ、
第3図は浮動型磁気ヘッドを示1斜視図、第4図は同側
面図、第5図から第12図は各工程で出来た浮動型磁気
ヘッドを示す斜視図である。
1・・・・・・コア
2・・・・・・スライダー
3・・・・・・接合ガラス
4・・・・・・フロントギャップ
5・・・・・・バックギャップ
代理人の氏名 弁理士 粟野重孝 はか1名第1図
第2図
第3図 41
第5図
第 6 図Figure 1 is a plan view showing the test method, Figure 2 is a graph showing the difference in bonding force between the core and slider between the conventional example and this example.
FIG. 3 is a perspective view of the floating magnetic head, FIG. 4 is a side view of the same, and FIGS. 5 to 12 are perspective views of the floating magnetic head produced in each step. 1... Core 2... Slider 3... Bonded glass 4... Front gap 5... Back gap Name of agent Patent attorney Awano Haka Shigetaka 1 person Figure 1
Figure 2 Figure 3 41 Figure 5 Figure 6
Claims (1)
磁性体を介在させて前記二つの磁性ブロックを接合させ
るとともに、前記ギャップ充填材よりも軟化点の低い接
合用ガラスで前記二つの磁性ブロックの接合の補強をす
る第一の工程と、少なくとも前記磁性ブロックの一方を
所定のトラック幅に切削する第二の工程と、前記第二の
工程の後に前記接合用ガラスの軟化点よりも高い温度で
、しかも前記磁気ギャップ充填材の軟化点よりも低い温
度で熱処理を行なう第三の工程を備えた事を特徴とする
磁気ヘッドの製造方法。A non-magnetic material serving as a magnetic gap filler is interposed between the two magnetic blocks to bond the two magnetic blocks, and a bonding glass having a softening point lower than that of the gap filler is used to bond the two magnetic blocks. a first step of reinforcing the bonding, a second step of cutting at least one of the magnetic blocks to a predetermined track width, and after the second step, at a temperature higher than the softening point of the bonding glass. A method for manufacturing a magnetic head, further comprising a third step of performing heat treatment at a temperature lower than the softening point of the magnetic gap filler.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22820988A JPH0276108A (en) | 1988-09-12 | 1988-09-12 | Production of magnetic head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22820988A JPH0276108A (en) | 1988-09-12 | 1988-09-12 | Production of magnetic head |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0276108A true JPH0276108A (en) | 1990-03-15 |
Family
ID=16872900
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22820988A Pending JPH0276108A (en) | 1988-09-12 | 1988-09-12 | Production of magnetic head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0276108A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6954978B1 (en) * | 2000-10-10 | 2005-10-18 | Maxtor Corporation | Method for reducing corrosion of a head element during the manufacture of a disk drive |
-
1988
- 1988-09-12 JP JP22820988A patent/JPH0276108A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6954978B1 (en) * | 2000-10-10 | 2005-10-18 | Maxtor Corporation | Method for reducing corrosion of a head element during the manufacture of a disk drive |
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