JPH0362201B2 - - Google Patents
Info
- Publication number
- JPH0362201B2 JPH0362201B2 JP17507684A JP17507684A JPH0362201B2 JP H0362201 B2 JPH0362201 B2 JP H0362201B2 JP 17507684 A JP17507684 A JP 17507684A JP 17507684 A JP17507684 A JP 17507684A JP H0362201 B2 JPH0362201 B2 JP H0362201B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- marks
- combination
- scale according
- magnetic scale
- 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
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 229910002056 binary alloy Inorganic materials 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 230000005415 magnetization Effects 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000002269 spontaneous effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910017881 Cu—Ni—Fe Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、リニアアクチユエータのエンコーダ
ーや回転数検出用のエンコーダー等に利用される
マグネテイツクスケールに関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a magnetic scale used as an encoder for a linear actuator, an encoder for detecting rotational speed, and the like.
従来の技術
従来この種のマグネテイツクスケールとして
は、オーデイオ用として広く利用されている磁気
テープもしくはキユニフエ（Cu−Ni−Fe合金）
の薄帯に磁気的マークを付したものが充当されて
いる。しかしながら、オーデイオ用の磁気テープ
は保磁力が300〜1000エルステツド（Oe）程度、
キユニフエは400〜600（Oe）程度であり、この程
度の保磁力では高密度に磁気的マークを付する点
で問題がでてくる。Conventional technology Conventionally, this type of magnetic scale uses magnetic tape or KiuniFu (Cu-Ni-Fe alloy), which are widely used for audio applications.
A thin strip with magnetic markings is used. However, magnetic tape for audio has a coercive force of about 300 to 1000 Oe.
The coercive force of Kiunihue is about 400 to 600 (Oe), and with this level of coercive force, problems arise in attaching magnetic marks with high density.
発明が解決しようとする問題点
上記従来の低保磁力材では、磁気的マークを等
間隔に着磁する場合、先に着磁した磁気的マーク
を次に着磁する磁界で弱めるとか消してしまうと
いつた不都合が発生する。Problems to be Solved by the Invention In the conventional low coercivity material described above, when magnetic marks are magnetized at equal intervals, the magnetic marks magnetized first are weakened or erased by the magnetic field of the next magnetization. This will cause some inconvenience.
問題点を解決するための手段
本発明は、Ｒ−Ｔ−Ｍ（Ｒ：希土類元素より選
ばれた１種もしくは２種以上の組合せ、Ｔ：Fe、
Co、Niより選ばれた１種もしくは２種以上の組
合せ；Ｍ：Si、Ｂ、Ｐより選ばれた１種もしくは
２種以上の組合せ）よりなる硬磁性の急冷合金薄
帯の表面に磁気的マークを付してなることを特徴
とするマグネテイツクスケールである。Means for Solving the Problems The present invention provides R-T-M (R: one or a combination of two or more selected from rare earth elements, T: Fe,
Magnetic on the surface of a hard magnetic rapidly solidified alloy ribbon consisting of one type or combination of two or more selected from Co, Ni; M: one type or combination of two or more selected from Si, B, P. This is a magnetic scale that is characterized by having marks attached to it.
上記硬磁性（永久磁石特性）を有する急冷合金
薄帯は、その保持力が2000〜8000（Oe）と広い範
囲で選択することができる。その組成中Ｒで示さ
れる希土類元素としては20〜60at％の範囲がよ
く、この範囲外では2000（Oe）以上の保持力が得
られない。 The rapidly solidified alloy ribbon having the above-mentioned hard magnetism (permanent magnetic properties) can be selected from a wide range of coercivity ranging from 2000 to 8000 (Oe). The rare earth element represented by R in the composition is preferably in the range of 20 to 60 at%, and a holding power of 2000 (Oe) or more cannot be obtained outside this range.
Ｔで示される遷移元素は、磁束密度を向上させ
るが、37at％未満ではその自発磁化の値が
30emu／ｇ以下となつてマグネテイツクスケール
としての実用的見地から不適当であり、77at％を
越えると自発磁化の値は80emu／ｇと大きいが、
保持力が2000（Oe）を割り込んでしまうので実用
上好ましくない。 The transition element denoted by T improves the magnetic flux density, but if it is less than 37at%, its spontaneous magnetization value decreases.
If it is less than 30 emu/g, it is unsuitable from a practical standpoint as a magnetic scale, and if it exceeds 77 at%, the spontaneous magnetization value is as large as 80 emu/g.
Since the holding force falls below 2000 (Oe), it is not practical.
Ｍで示されるメタロイド元素は、急冷合金が薄
帯となるために不可欠な元素であるが、0.1at％
未満では薄帯となりにくく、また3at％を越える
と保持力が2000（Oe）より低くなつてしまう。 The metalloid element denoted by M is an essential element for the rapidly solidified alloy to become a ribbon, but at 0.1 at%
If it is less than 3 at%, it will be difficult to form a ribbon, and if it exceeds 3 at%, the holding power will be lower than 2000 (Oe).
本発明における急冷合金薄帯をつくるには、所
定の組成に秤量した材料を透明石英もしくは窒化
ケイ素製のルツボ（下部に吹き出し用小穴有）に
入れ、不活性雰囲気中で加熱（1100〜1350℃）
し、周速が10〜40m／ｓで回転している銅製ホイ
ール上に噴出して得られる。この場合、薄帯の表
面粗さが問題となる場合は、２個の銅製ホイール
の間に溶液を噴出して作成する。得られる薄帯の
厚さは10〜50μｍである。 To produce the rapidly solidified alloy ribbon of the present invention, materials weighed to a predetermined composition are placed in a transparent quartz or silicon nitride crucible (with a small hole for blowing at the bottom) and heated in an inert atmosphere (1100 to 1350°C). )
It is obtained by spraying it onto a copper wheel rotating at a circumferential speed of 10 to 40 m/s. In this case, if the surface roughness of the ribbon is a problem, it is created by squirting a solution between two copper wheels. The thickness of the ribbon obtained is 10 to 50 μm.
急冷合金薄帯に付される磁気的マークは、Ｎ極
とＳ極が等間隔にそして交互になるように付して
もよければ“０”、“１”の二進法による磁気的書
き込みであつてもよい。これらはその使用目的に
よつて分類されるが、読み取り側が薄帯と非接触
型である場合、Ｎ，Ｎ，Ｓ，Ｓ，Ｎ，Ｎ，Ｓ，Ｓ
…と同極を２個ずつ続けて交互に着磁した方が強
力な信号として得られるので望ましい。 The magnetic marks attached to the quenched alloy ribbon may be magnetic writing in the binary system of "0" and "1" if it is acceptable to mark them so that the north and south poles are equally spaced and alternate. Good too. These are classified according to their purpose of use, but if the reading side is a thin strip or non-contact type, N, N, S, S, N, N, S, S
It is preferable to alternately magnetize two pieces of the same polarity as ... because a stronger signal can be obtained.
また、急冷薄帯面上に一列に磁気的マークを付
するだけでなく、同種のあるいは異なる磁気的マ
ークを並列に入れ、いずれかの一列をアドレス用
として使用することも実施できる。こうすること
によつて、多目的のマグネテイツクスケールが一
本の急冷合金薄帯で得られる。 Further, in addition to placing magnetic marks in a line on the surface of the quenched ribbon, it is also possible to place magnetic marks of the same type or different types in parallel and use one of the lines for addressing. In this way, a multi-purpose magnetic scale is obtained from a single rapidly solidified alloy ribbon.
実施例
Pr0.4−Fe0.456−Co0.114−Si0.03合金をAr雰囲気
中で高周波溶解したのち、回転している銅ロール
上に射出することにより巾1.5mm、厚み35μｍの長
尺の急冷合金薄帯（1Hc：3800Oe、自発磁化
45.2emu／ｇ）を得た。Example Pr 0.4 −Fe 0.456 −Co 0.114 −Si 0.03 alloy is melted at high frequency in an Ar atmosphere and then injected onto a rotating copper roll to produce a long rapidly solidified alloy ribbon with a width of 1.5 mm and a thickness of 35 μm. ( 1 Hc: 3800Oe, spontaneous magnetization
45.2 emu/g).
この急冷合金薄帯をプラスチツクカードの表面
に接着剤にて固定し、書き込みが２周波PE方式
で記録密度が210BPIの二進法デジタル数値書き
込み装置を使用して書き込みを行なつた。書き込
みヘツドはパーマロイPBを使用し、100μｍのギ
ヤツプで書き込み電流は120mAを使用した。数
字は１ワード８ビツトで構成され任意の数字が10
数字７回繰返し書き込みを行なつた。図１に書き
込み電流80mAで書き込みを行なつた時のビツト
信号波形を示す。 This quenched alloy ribbon was fixed to the surface of a plastic card with adhesive, and writing was performed using a binary digital numerical writing device with a two-frequency PE method and a recording density of 210 BPI. Permalloy PB was used as the write head, with a gap of 100 μm and a write current of 120 mA. Numbers are composed of 1 word and 8 bits, and any number can be 10.
I wrote the numbers repeatedly 7 times. Figure 1 shows the bit signal waveform when writing is performed with a write current of 80mA.
波の途中に磁化反転を示す波形が“０”信号で
磁化反転のない波形が“１”信号を表わす。 A waveform showing magnetization reversal in the middle of the wave represents a "0" signal, and a waveform without magnetization reversal represents a "1" signal.
波形より十分に信号が記録されていることがわ
かる。 It can be seen from the waveform that the signal has been sufficiently recorded.
発明の効果
本発明のマグネテイツクスケールは保磁力が高
いので、磁気的マークを高密度で着磁しても、先
に着磁した磁気的マークが次の着磁によつて弱め
られるような悪影響はほとんどない。また、一つ
の薄帯に複数種の磁気的マークを付することがで
きるので多目的に利用することができる。Effects of the Invention Since the magnetic scale of the present invention has a high coercive force, even if magnetic marks are magnetized with high density, the magnetic marks magnetized first will be weakened by the next magnetization. There are almost no negative effects. Furthermore, since multiple types of magnetic marks can be attached to one ribbon, it can be used for multiple purposes.
図は本発明実施例におけるビツト信号波形を示
すグラフである。
The figure is a graph showing the bit signal waveform in the embodiment of the present invention.
Claims (1)
種もしくは２種以上の組合せ、Ｔ：Fe、Co、Ni
より選ばれた１種もしくは２種以上の組合せ；
Ｍ：Si、Ｂ、Ｐより選ばれた１種もしくは２種以
上の組合せ）よりなる硬磁性の急冷合金薄帯の表
面に磁気的マークを付してなることを特徴とする
マグネテイツクスケール。 ２ 急冷合金薄帯の組成がＲ＝20〜60at％、Ｔ＝
37〜77at％、Ｍ＝0.1〜3at％である特許請求の範
囲１記載のマグネテイツクスケール。 ３ 磁気的マークとしてＮ極とＳ極が等間隔にそ
して交互に配列されている特許請求の範囲１記載
のマグネテイツクスケール。 ４ 磁気的マークとして、Ｎ，Ｎ，Ｓ，Ｓ，Ｎ，
Ｎ，Ｓ，Ｓ…のごとく等間隔に２極は同じ極で交
互に配列されている特許請求の範囲１記載のマグ
ネテイツクスケール。 ５ 磁気的マークが二進法によりなるデジタル数
字記録体となつている特許請求の範囲１記載のマ
グネテイツクスケール。 ６ 特許請求の範囲３，４ならびに５項における
磁気的マークを任意の組合せで並列に付してなる
特許請求の範囲１記載のマグネテイツクスケー
ル。[Claims] 1 R-T-M (R: 1 selected from rare earth elements)
Species or combination of two or more types, T: Fe, Co, Ni
One type or a combination of two or more types selected from;
M: A magnetic scale characterized by having magnetic marks attached to the surface of a hard magnetic rapidly solidified alloy ribbon made of one or a combination of two or more selected from Si, B, and P. 2 The composition of the rapidly solidified alloy ribbon is R = 20 to 60 at%, T =
The magnetic scale according to claim 1, wherein M is 37 to 77 at% and M=0.1 to 3 at%. 3. The magnetic scale according to claim 1, wherein north poles and south poles are arranged alternately and at regular intervals as magnetic marks. 4 As magnetic marks, N, N, S, S, N,
2. The magnetic scale according to claim 1, wherein the two poles are arranged alternately at equal intervals such as N, S, S, . . . . 5. The magnetic scale according to claim 1, wherein the magnetic mark is a digital number recorder based on a binary system. 6. The magnetic scale according to claim 1, wherein the magnetic marks according to claims 3, 4, and 5 are attached in parallel in any combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17507684A JPS6153504A (en) | 1984-08-24 | 1984-08-24 | Magnetic scale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17507684A JPS6153504A (en) | 1984-08-24 | 1984-08-24 | Magnetic scale |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6153504A JPS6153504A (en) | 1986-03-17 |
| JPH0362201B2 true JPH0362201B2 (en) | 1991-09-25 |
Family
ID=15989810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17507684A Granted JPS6153504A (en) | 1984-08-24 | 1984-08-24 | Magnetic scale |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6153504A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5265480A (en) * | 1990-08-23 | 1993-11-30 | Mazda Motor Corporation | Torque detector |
| JP2950979B2 (en) * | 1990-11-30 | 1999-09-20 | マツダ株式会社 | Manufacturing method of sensor having magnetic film |
| JP2933738B2 (en) * | 1991-03-29 | 1999-08-16 | マツダ株式会社 | Magnetic recording medium and method of manufacturing the same |
-
1984
- 1984-08-24 JP JP17507684A patent/JPS6153504A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6153504A (en) | 1986-03-17 |
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