JPS5940281B2 - Radial magnetization method - Google Patents
Radial magnetization methodInfo
- Publication number
- JPS5940281B2 JPS5940281B2 JP10986679A JP10986679A JPS5940281B2 JP S5940281 B2 JPS5940281 B2 JP S5940281B2 JP 10986679 A JP10986679 A JP 10986679A JP 10986679 A JP10986679 A JP 10986679A JP S5940281 B2 JPS5940281 B2 JP S5940281B2
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- radial
- radial magnetization
- magnets
- magnetization method
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F13/00—Apparatus or processes for magnetising or demagnetising
- H01F13/003—Methods and devices for magnetising permanent magnets
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Description
【発明の詳細な説明】 本発明は放射状着磁の方法に関する。[Detailed description of the invention] The present invention relates to a method of radial magnetization.
最近の有学技術の進歩、とくに電子工業の驚異的な発展
は、ますます小型、高性能で、複雑な磁極を有する永久
磁石の必要性を増大させている。Recent technological advancements, particularly the tremendous development of the electronics industry, have increased the need for ever smaller, higher performance, and more complex permanent magnets with magnetic poles.
とくに第１図のような放射状に磁化を持つ磁石への要求
は、各磁石ユーザーから多かつたが、これらの磁石が製
品化された例）まほとんどない。一部で見られたとして
も、第２図のように厚み方向に着磁した磁石帯を巻いて
作つたものであり、高コストなためほとんど使用されて
いなかつた。このように放射状磁化磁石が、市場の要求
があるにもかかわらず製品化されない理由の１つは、着
磁が簡単にできないという点であつた。本発明はかかる
欠点を除去したものである。In particular, although there have been many requests from various magnet users for magnets with radial magnetization as shown in Figure 1, there are very few examples of these magnets being commercialized. Even if they were seen in some places, they were made by winding magnetic strips magnetized in the thickness direction, as shown in Figure 2, and were rarely used due to their high cost. One of the reasons why radially magnetized magnets have not been commercialized despite market demand is that they cannot be easily magnetized. The present invention eliminates this drawback.
すなわち、第３図のように磁石１の上又は下又は上下に
、磁石の外周又は内周に沿つて導線２を設置し、矢印方
向へパルス電流を流し磁石部に第４図矢印のような放射
状の磁束を発生させることによつて、放射状着磁を可能
にしたものである。以下実施例に基づいて本発明を詳し
く説明する。第３図に於て、磁石１には、外径１５ｍｍ
、穴径１０ｍｍ、厚み２ｍｍの、希土類：還移金属■１
：５等方性磁石を使用、導線２には、線径２．５ｍｍの
銅線をリング部外径１５ｍｍ、リング部内径１０ｍｍに
曲げて使用した。これらを第３図のように、磁石１の上
下に２つの導線リング２を固定して、この導線に矢印の
ように、１００ＯＯＡのパルス電流を流したところ、磁
石１は第１図のように放射状に着磁され、外周部では５
００Ｇの磁束密度を発生さすことができた。又、第５図
のような、外周の一辺の長さが７．５ｍｍ、内周の一辺
の長さが５ｍｍ、厚みが２ｍｍの六角柱の等方性希土類
一遷移金属磁石においても、この磁石の上下に線径２．
５ｍｍの導線をセットし、１００ＯＯＡのパルス通電を
することによつて、外周部の磁束密度が５００Ｇの放射
状磁化磁石を得た。That is, as shown in Fig. 3, a conducting wire 2 is installed above or below the magnet 1 along the outer or inner periphery of the magnet, and a pulse current is passed in the direction of the arrow to the magnet part as shown by the arrow in Fig. 4. Radial magnetization is made possible by generating radial magnetic flux. The present invention will be described in detail below based on Examples. In Figure 3, magnet 1 has an outer diameter of 15 mm.
, hole diameter 10mm, thickness 2mm, rare earth: reduction metal ■1
:5 isotropic magnet was used, and the conductive wire 2 was a copper wire with a wire diameter of 2.5 mm bent to have a ring part outer diameter of 15 mm and a ring part inner diameter of 10 mm. As shown in Fig. 3, two conducting wire rings 2 are fixed above and below the magnet 1, and when a pulse current of 100OOA is passed through the conducting wires as shown by the arrow, the magnet 1 becomes as shown in Fig. 1. Magnetized radially, 5 at the outer periphery
It was possible to generate a magnetic flux density of 00G. Also, in the case of a hexagonal prism isotropic rare earth-transition metal magnet with a side length of 7.5 mm on the outer periphery, a side length of 5 mm on the inner periphery, and a thickness of 2 mm as shown in Fig. 5, this magnet Wire diameter 2.
A radially magnetized magnet with a magnetic flux density of 500 G at the outer periphery was obtained by setting a 5 mm conducting wire and applying a pulse current of 100 OOA.
以上のように本発明は従来簡単にはできないとされてい
た放射状の着磁を可能にしたのみならず、低コスト化に
非常な効果を有するものである。As described above, the present invention not only enables radial magnetization, which was previously thought to be impossible, but also has a significant effect on cost reduction.
固、本発明はバリウム−フェライト、アルニコ、希土数
−遷移金属等、すべての等方性又は異方性の磁石に有効
であり、又、円形、六角形のみでなくいかなる幾可学的
形状の磁石にも有効である。However, the present invention is effective for all isotropic or anisotropic magnets such as barium-ferrite, alnico, rare earth-transition metal, etc., and is effective for magnets of any geometric shape, not just circular or hexagonal. It is also effective for magnets.
第１図は放射状に磁化を持つ穴付円筒磁石の説明図、第
２図は従来の放射状磁石の製造方法の説明図、第３図は
本発明による放射状着磁方法の説明図、１は磁石、２は
導線、第４図は、第３図の一部断面図、第５図は本発明
により着磁された六角柱の放射状磁石の説明図。Figure 1 is an explanatory diagram of a cylindrical magnet with a hole that is radially magnetized, Figure 2 is an explanatory diagram of a conventional method for manufacturing a radial magnet, Figure 3 is an explanatory diagram of a radial magnetization method according to the present invention, and 1 is a diagram of a magnet. , 2 is a conducting wire, FIG. 4 is a partial sectional view of FIG. 3, and FIG. 5 is an explanatory diagram of a hexagonal columnar radial magnet magnetized according to the present invention.
Claims (1)
に、磁石の外周又は内周に沿つて導線を設置して、パル
ス電流により磁石部に放射状磁束を発生させて着磁する
ことを特徴とする放射状着磁の方法。1. In radial magnetization of a magnet, conductive wires are installed above or below the magnet along the outer or inner circumference of the magnet, and magnetization is performed by generating radial magnetic flux in the magnet part using pulsed current. A method of radial magnetization characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10986679A JPS5940281B2 (en) | 1979-08-29 | 1979-08-29 | Radial magnetization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10986679A JPS5940281B2 (en) | 1979-08-29 | 1979-08-29 | Radial magnetization method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5633808A JPS5633808A (en) | 1981-04-04 |
| JPS5940281B2 true JPS5940281B2 (en) | 1984-09-29 |
Family
ID=14521175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10986679A Expired JPS5940281B2 (en) | 1979-08-29 | 1979-08-29 | Radial magnetization method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5940281B2 (en) |
-
1979
- 1979-08-29 JP JP10986679A patent/JPS5940281B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5633808A (en) | 1981-04-04 |
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