JPS6224700A - Manufacture of magnetic shield part - Google Patents
Manufacture of magnetic shield partInfo
- Publication number
- JPS6224700A JPS6224700A JP16315485A JP16315485A JPS6224700A JP S6224700 A JPS6224700 A JP S6224700A JP 16315485 A JP16315485 A JP 16315485A JP 16315485 A JP16315485 A JP 16315485A JP S6224700 A JPS6224700 A JP S6224700A
- Authority
- JP
- Japan
- Prior art keywords
- plate material
- unevenness
- magnetic
- manufacturing
- shield case
- 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
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は例えば磁気へ、ドのシールドケースに用いられ
る磁気シールド部品の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a method of manufacturing a magnetic shield component used, for example, in a magnetic shield case.
テープレコーダ、ビデオカセットチーブレコーダなどに
用いられる磁気へ、ドは、磁性合金の板材からなるシー
ルドケースの内部にへ、ドコアを配置し、エポキシ樹脂
などの樹脂によシヘ、ドコアをシールドケースに固着し
た構造をなすものである。そして、ヘッドコアがテープ
と摺接する時の圧力でシールドケースから抜は出すこと
を防止するために、シールドケースの内面に凹凸を形成
し、この凹凸にヘッドコアの外面を接触させて保持し、
ヘッドコアをシー岬ドケースから抜けに＜＜シている。For magnetism used in tape recorders, video cassette recorders, etc., the core is placed inside a shield case made of a plate of magnetic alloy, and then covered with resin such as epoxy resin, and the core is fixed to the shield case. It has a similar structure. In order to prevent the head core from being pulled out of the shield case due to the pressure generated when it comes into sliding contact with the tape, unevenness is formed on the inner surface of the shield case, and the outer surface of the head core is held in contact with the unevenness.
The head core is removed from the sea cape case.
従来、この磁気ヘッドに用いるシールドケースは、次の
方法によって製作されている。すなわち、磁性合金の板
材を角筒形をなすケース形状に絞シ加工してシールドケ
ースを形成し、その後にシールドケースの内面に凹凸を
形成する加工を行なりている。シールドケースの内面に
凹凸を形成する加工としては、サンドブラストによりシ
ールドケースの内面を粗面にする方法、あるいはシール
ドケースの壁部に外面側から内面側に突出する突起を形
成する方法などが行なわれている。Conventionally, a shield case used for this magnetic head has been manufactured by the following method. That is, a shield case is formed by drawing a magnetic alloy plate material into a rectangular cylindrical case shape, and then a process is performed to form irregularities on the inner surface of the shield case. Processing to form irregularities on the inner surface of the shield case includes methods such as roughening the inner surface of the shield case by sandblasting, or forming protrusions that protrude from the outer surface to the inner surface on the wall of the shield case. ing.
しかしながら、このようなシールドケースの製造方法で
は、プレス加工により角筒形に形成したシールドケース
に対して凹凸を形成する加工を行なうもので、凹凸形成
加工が面倒である。However, in this method of manufacturing a shield case, the shield case, which is formed into a rectangular cylinder shape by press working, is processed to form unevenness, and the process of forming the unevenness is troublesome.
特にシールドケースの内部は狭いので内部側から加工を
行なうことは大変難しく、シールドケースの内面にヘッ
ドコアを強固に押えることができる凹凸を容易且つ確実
に形成することが困難である。しかも、シールピケ−２
１個１個に凹凸形成作業を行なうので、生産能率が悪い
という問題がある。In particular, since the inside of the shield case is narrow, it is very difficult to process from the inside, and it is difficult to easily and reliably form unevenness on the inner surface of the shield case that can firmly press the head core. Moreover, Seal Pique-2
Since unevenness is formed on each piece, there is a problem of poor production efficiency.
本発明は前記事情に基づいてなされたもので、磁気へ、
ドなどの部品を保持するための凹凸を容易１つ確実に形
成することができ、生産性に浸れた磁気シールド部品の
製造方法を提供することを目的とする。The present invention has been made based on the above circumstances, and is directed to magnetism.
An object of the present invention is to provide a method for manufacturing a magnetic shielding component that can easily and reliably form one unevenness for holding a component such as a magnetic shield component, and is highly productive.
本発明の磁気シールド部品の製造方法は、磁性合金から
なる板材の表面に、外周面に凹凸を有する圧延ロールを
用いて凹凸を形成する工程と、凹凸を形成した板材を部
品形状に形成する工程とを具備することを特徴とするも
のである。The method for manufacturing a magnetic shield component of the present invention includes a step of forming unevenness on the surface of a plate made of a magnetic alloy using a rolling roll having an uneven outer peripheral surface, and a step of forming the plate with the unevenness into a component shape. It is characterized by comprising the following.
以下、本発明を、磁気へ、ド用シールドクースを製造す
る方法に適用して図面を参照して説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings as applied to a method of manufacturing a shield for magnetic fields.
まず、第１図で示すように磁性合金からなる板材１を用
意する。磁性合金としては、磁気遮蔽効果が大きな鉄−
二、ケル合金（−４′−マロイ）が適している。板材は
、シールドケース複数個分の材料取りが可能な寸法とす
る。First, as shown in FIG. 1, a plate material 1 made of a magnetic alloy is prepared. As a magnetic alloy, iron has a large magnetic shielding effect.
2. Kel alloy (-4'-malloy) is suitable. The size of the plate material is such that it is possible to take enough material for multiple shield cases.
次いで、８ｇ２図で示すように板材１の表面に、外周面
に凹凸４を有する上ロール３と下ロールを用いた圧延加
工によシ凹凸２を形成する。板材１に凹凸２を形成する
面は、シールドケースの内面となる一方の面である。上
ロール３の外周面に形成する凹凸４は、例えば多数の細
い突条または条溝が相互に斜めに交差する形態のものが
好しいが、単なる条溝のものでも良く、且つこの凹凸４
は精密旋盤を用いた切削加工によシ上ロール３の外周面
に形成する。上ロール３は下ロール５と組合せて、板材
１の圧延加工を行なう。Next, as shown in Figure 8g2, unevenness 2 is formed on the surface of the plate material 1 by rolling using an upper roll 3 and a lower roll having unevenness 4 on the outer peripheral surface. The surface on which the unevenness 2 is formed on the plate material 1 is one surface that becomes the inner surface of the shield case. The irregularities 4 formed on the outer circumferential surface of the upper roll 3 are preferably in the form of, for example, a large number of thin protrusions or grooves that intersect diagonally with each other, but they may also be simple grooves.
is formed on the outer peripheral surface of the upper roll 3 by cutting using a precision lathe. The upper roll 3 is combined with the lower roll 5 to roll the plate material 1.
すなわち、図示しない駆動機構によシ回転される上ロー
ル３と下ロール５との間に板材１を通して移送する。こ
の過程で、上ロール３の外周面に形成した凹凸４が板材
１の一方の面に接し、この面の全体に、前記凹凸４と同
じ多数の細い突条または条溝が相互に斜交する形態の凹
凸２を形成する。これによシ−ルドケース１個分の板材
１に対して、１度に凹凸２を形成できる。That is, the plate material 1 is passed between an upper roll 3 and a lower roll 5 which are rotated by a drive mechanism (not shown) and transferred. In this process, the unevenness 4 formed on the outer circumferential surface of the upper roll 3 comes into contact with one surface of the plate material 1, and the same number of thin protrusions or grooves as the above-mentioned unevenness 4 cross obliquely on the entire surface. Forming unevenness 2 in the form. As a result, the unevenness 2 can be formed on the plate material 1 for one shield case at a time.
次いで、板材１をシールドケース複数個分の材料取りに
応じて切断し、シールドケース１個分の展開寸法を有す
る複数の板材１に分割する。Next, the plate material 1 is cut according to the material required for a plurality of shield cases, and is divided into a plurality of plate materials 1 each having an expanded size for one shield case.
そして、切断した板材１に対して凹凸２を形成した一方
の面が内側になるようにしてプレスにより絞シ加工を行
ない、第３図で示すように内面に凹凸２を有する角筒形
をなすシールドケース６を形成する。なお、圧延加工に
よシ板材１に形成した凹凸２は、絞シ加工率が一定で（
絞シ加工による板厚の変動率）あるために、絞シ加工に
よっても所定の精度を保持することができる。Then, the cut plate material 1 is drawn with a press so that one surface on which the unevenness 2 is formed is on the inside, and a rectangular tube shape having the unevenness 2 on the inner surface is formed as shown in Fig. 3. A shield case 6 is formed. It should be noted that the unevenness 2 formed on the sheet material 1 by rolling is given by a constant drawing rate (
Since there is a rate of variation in plate thickness due to the drawing process, a predetermined accuracy can be maintained even through the drawing process.
このように製作したシールドケース６は、内部にヘッド
コアを配置して樹脂で固着することによシ、磁気ヘッド
を構成する。シールドケース６の内面に形成した凹凸２
は、へ、ドコアの外面に接触してヘッドコアをシールド
部品７６から抜は出さ力いように強固に保持する。The thus manufactured shield case 6 constitutes a magnetic head by arranging the head core inside and fixing it with resin. Irregularities 2 formed on the inner surface of the shield case 6
The head core is firmly held in contact with the outer surface of the head core so that the head core is not pulled out from the shield component 76.
しかして、このようなシールドケースの製造方法によれ
ば、圧延加工により板材１に凹凸２を容易且つ均一な状
態で形成でき、また外周面に凹凸４を有する圧延ロール
３を用いて板材１を圧延することにより、板材１の表面
にへ、ドコアを強固に保持できる高さく深さ）の凹凸２
を確実に形成できる。特に、シールドケース６の内面に
形成した多数の細い突条または条溝の凹凸２は、へ、ド
コアに加わるあらゆる方向の外力に対してへ、ドコアを
強固に保持できるものであり、このような圧延加工によ
れば、へ。According to the manufacturing method of such a shield case, the unevenness 2 can be easily and uniformly formed on the plate material 1 by rolling, and the plate material 1 can be formed using the rolling roll 3 having the unevenness 4 on the outer peripheral surface. By rolling, the surface of the plate material 1 is made with unevenness (height and depth) that can firmly hold the core.
can be formed reliably. In particular, the many thin protrusions or grooves 2 formed on the inner surface of the shield case 6 can firmly hold the core against external forces applied to the core in all directions. According to the rolling process, to.
ドコアの保持に適した形態の凹凸２を確実に形成するこ
とが可能である。しかも、−回の圧延加工によシ複数個
のシールドケースの凹凸２を一度に形成できるために、
生産性が高い。It is possible to reliably form the unevenness 2 in a form suitable for holding the core. Moreover, since the unevenness 2 of the shield case can be formed in multiple times at the same time by the rolling process,
High productivity.
シールドケースに形成する凹凸は、前述した説明のもの
に限定されない。例えば第５図で示すシールドケース６
のように、多数の小突起によって形成される粗面をなす
凹凸２を形成しても良い。この場合には、第４図で示す
ように外周面に粗面をなす凹凸４を形成した上ロール３
を用いて板材１に圧延加工を施し、板材１の一力の面に
粗面をなす凹凸２を形成する。圧延ロール３の凹凸３は
、サンドブラスト加工によシ−ルド部品を粗面にして形
成する。The irregularities formed on the shield case are not limited to those described above. For example, the shield case 6 shown in FIG.
The rough surface 2 may be formed by a large number of small protrusions, as shown in FIG. In this case, as shown in FIG.
The plate material 1 is rolled using a rolling process to form roughness 2 on the single force surface of the plate material 1. The unevenness 3 of the rolling roll 3 is formed by roughening the shield part by sandblasting.
なお、本発明は磁気へ、ド用のシールドケースを製作す
る場合に限らず、他の用途に用いる磁気シールド部品を
製造する場合にも適用できる。Note that the present invention is applicable not only to the production of a shield case for magnetic fields, but also to the production of magnetic shield parts for other uses.
次に実施例について説明する。 Next, an example will be described.
構成が重量比で７８％Ｎｌ −４％Ｍｏ −６％Ｃｕの
磁性合金からなる厚さ０．６ ｔｗｍの板材を用意し、
前記第２図で示す圧延ロールを用いて圧延加工を行ない
、板材の一側面に幅０．３〜０．５露、深さ１０〜２０
μｍの多数の条溝が斜交する凹凸を形成した。次いで、
板材をシールドケース複数個分に切断して、切断した板
材に対し凹凸形成面を内側にして絞シ加工を行ない、第
３図で示ｆｌＢ気へ、ド用シールドケースを製作した。A plate material with a thickness of 0.6 twm made of a magnetic alloy having a composition of 78% Nl - 4% Mo - 6% Cu by weight was prepared,
Rolling is carried out using the rolling rolls shown in FIG.
A large number of μm-sized grooves formed obliquely intersecting concavities and convexities. Then,
The plate material was cut into a plurality of shield cases, and the cut plate material was subjected to a drawing process with the surface on which the concave and convex portions were formed on the inside to produce a shield case for the board as shown in FIG. 3.
そして、このシールドケースにエポキシ樹脂を介してヘ
ッドコアを固着してる吐気へ、ドを製作し、この磁気ヘ
ッドをカセットテープレコーダに組込んで使用した結果
、へ、ドコアはシールドケースに強固に固層された状態
を保持できシールドケースから抜は外れることがなかっ
た。Then, as a result of manufacturing a magnetic head that fixed the head core to this shield case via epoxy resin and using it by incorporating this magnetic head into a cassette tape recorder, the core was firmly attached to the shield case. It was possible to maintain the state in which it was removed, and it did not come off the shield case.
以上説明したように本発明の磁気シールド部品の製造方
法によれば、磁気シールド部品を形成する板材に圧延加
工によシ凹凸を形成し、その後に前記板材を加工してシ
ールド部品を形成するので、ヘッドコアなどの部品を強
固に保持できる凹凸を容易且つ確実に形成できるととも
に、シールド部品の生産能率を向上でき、特に内面に凹
凸を有する磁気シールド部品を生産性良く製作できる。As explained above, according to the method for manufacturing a magnetic shield component of the present invention, unevenness is formed by rolling on a plate material forming a magnetic shield component, and then the plate material is processed to form a shield component. In addition, it is possible to easily and reliably form unevenness that can firmly hold components such as a head core, and it is also possible to improve the production efficiency of shield components, and in particular, it is possible to manufacture magnetic shield components having unevenness on the inner surface with high productivity.
第１図および第２図は本発明の製造方法の一例を示す説
明図、＠３図は第１図および第２図で示される製造方法
によシ製造された磁気ヘッド用シールドケースを示す斜
視図、第４図は本発明の製造方法の他の例を示す説明図
、第５図は第４図で示される製造方法により製造された
磁気シールド用シールドケースを示す斜視図である。
１・・・板材、２・・・凹凸、３．５・・・ロール、４
・・・凹凸、６・・・磁気へ、ド用シールドケース。
出願人代理人 弁理士 鈴 江 武 彦第２図
第３図
第４図
第５ｖ！ＪFIGS. 1 and 2 are explanatory diagrams showing an example of the manufacturing method of the present invention, and FIG. 3 is a perspective view showing a magnetic head shield case manufactured by the manufacturing method shown in FIGS. 1 and 2. 4 are explanatory views showing other examples of the manufacturing method of the present invention, and FIG. 5 is a perspective view showing a shield case for magnetic shielding manufactured by the manufacturing method shown in FIG. 4. 1... Plate material, 2... Unevenness, 3.5... Roll, 4
...Irregularities, 6... Shield case for magnetic and de. Applicant's agent Patent attorney Takehiko Suzue Figure 2 Figure 3 Figure 4 Figure 5v! J
Claims (6)
有する圧延ロールを用いて凹凸を形成する工程と、凹凸
を形成した前記板材を部品形状に形成する工程とを具備
する磁気シールド部品の製造方法。(1) A magnetic shield component comprising the steps of forming irregularities on the surface of a plate material made of a magnetic alloy using a rolling roll having irregularities on the outer peripheral surface, and forming the plate material with the irregularities into a component shape. manufacturing method.
ある特許請求の範囲第１項に記載の磁気シールド部品の
製造方法。(2) The method for manufacturing a magnetic shield component according to claim 1, wherein the unevenness formed on the plate material is a large number of protrusions or grooves.
である特許請求の範囲第１項に記載の磁気シールド部品
の製造方法。(3) The method for manufacturing a magnetic shield component according to claim 1, wherein the unevenness formed on the plate material is a rough surface with many small protrusions lined up.
の内面である特許請求の範囲第１項ないし第３項いずれ
かに記載の磁気シールド部品の製造方法。(4) The method for manufacturing a magnetic shield component according to any one of claims 1 to 3, wherein the surface of the plate material forming the unevenness is the inner surface of the magnetic shield component.
である特許請求の範囲第１項ないし第４項いずれかに記
載の磁気シールド部品の製造方法。(5) The method for manufacturing a magnetic shield component according to any one of claims 1 to 4, wherein the magnetic alloy forming the plate material is an iron-nickel magnetic alloy.
特許請求の範囲第１項ないし第５項いずれかに記載の磁
気シールド部品の製造方法。(6) A method for manufacturing a magnetic shield component according to any one of claims 1 to 5, which is used for a shield case of a magnetic head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16315485A JPS6224700A (en) | 1985-07-24 | 1985-07-24 | Manufacture of magnetic shield part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16315485A JPS6224700A (en) | 1985-07-24 | 1985-07-24 | Manufacture of magnetic shield part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6224700A true JPS6224700A (en) | 1987-02-02 |
Family
ID=15768249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16315485A Pending JPS6224700A (en) | 1985-07-24 | 1985-07-24 | Manufacture of magnetic shield part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6224700A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03147502A (en) * | 1989-11-01 | 1991-06-24 | Alps Electric Co Ltd | Shielding case for magnetic head and production thereof |
| JPH0394607U (en) * | 1990-01-19 | 1991-09-26 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5156212A (en) * | 1974-11-11 | 1976-05-17 | Alps Electric Co Ltd | Jikihetsudono shiirudokeesuno seizohoho |
| JPS54147166A (en) * | 1978-05-11 | 1979-11-17 | Araya Kougiyou Kk | Production of rim |
| JPS5620720A (en) * | 1979-07-25 | 1981-02-26 | Hino Motors Ltd | Supercharger for internal combustion engine |
| JPS5870412A (en) * | 1981-10-21 | 1983-04-26 | Alps Electric Co Ltd | Manufacture of shielding case of magnetic head |
| JPS5877713A (en) * | 1981-10-30 | 1983-05-11 | Sumitomo Metal Ind Ltd | Manufacture of heat transfer pipe |
-
1985
- 1985-07-24 JP JP16315485A patent/JPS6224700A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5156212A (en) * | 1974-11-11 | 1976-05-17 | Alps Electric Co Ltd | Jikihetsudono shiirudokeesuno seizohoho |
| JPS54147166A (en) * | 1978-05-11 | 1979-11-17 | Araya Kougiyou Kk | Production of rim |
| JPS5620720A (en) * | 1979-07-25 | 1981-02-26 | Hino Motors Ltd | Supercharger for internal combustion engine |
| JPS5870412A (en) * | 1981-10-21 | 1983-04-26 | Alps Electric Co Ltd | Manufacture of shielding case of magnetic head |
| JPS5877713A (en) * | 1981-10-30 | 1983-05-11 | Sumitomo Metal Ind Ltd | Manufacture of heat transfer pipe |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03147502A (en) * | 1989-11-01 | 1991-06-24 | Alps Electric Co Ltd | Shielding case for magnetic head and production thereof |
| JPH0394607U (en) * | 1990-01-19 | 1991-09-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6224700A (en) | Manufacture of magnetic shield part | |
| US9205530B2 (en) | Lapping a workpiece | |
| GB902838A (en) | A process for the production of magnetic recording media | |
| JP3205942B2 (en) | A method for forming a concave portion of a shield cover for a magnetic recording device. | |
| JPS61178878A (en) | Carrier tape | |
| JPS5497403A (en) | Production of magnetic recording media | |
| JPH0779042B2 (en) | Magnetic steel sheet for laminated iron core | |
| JP2605846B2 (en) | Polishing method for magnetic recording media | |
| JPS6422744U (en) | ||
| JPS6315026Y2 (en) | ||
| JPS6321600A (en) | Manufacture of collimator for scintillation camera | |
| JPH0785302B2 (en) | Magnetic recording medium and manufacturing method thereof | |
| JPS60125932A (en) | Production of anisotropic floppy disk | |
| JP2001076338A (en) | Production of magnetic recording medium | |
| JPS59195324A (en) | Production of magnetic recording medium | |
| JPS60172746U (en) | Vacuum continuous processing equipment | |
| JPS59185715U (en) | magnetic head | |
| JPS62287968A (en) | Lapping carrier and manufacture method therefor | |
| JPH0352134B2 (en) | ||
| JPS5948700A (en) | Honeycomb construction material for collimator | |
| JPS59183084U (en) | Dustproof screen for earphones | |
| JPH04201872A (en) | Emboss type cavity tape | |
| JPS61170590A (en) | Production of shell for electroforming | |
| JPS60144911A (en) | Magnet roll for magnetic brush development | |
| JPS63217558A (en) | Manufacture of guide roller for magnetic tape device |