JPH01298945A - Permanent magnet type linear pulse motor - Google Patents
Permanent magnet type linear pulse motorInfo
- Publication number
- JPH01298945A JPH01298945A JP12700788A JP12700788A JPH01298945A JP H01298945 A JPH01298945 A JP H01298945A JP 12700788 A JP12700788 A JP 12700788A JP 12700788 A JP12700788 A JP 12700788A JP H01298945 A JPH01298945 A JP H01298945A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- pulse motor
- linear pulse
- type linear
- magnet type
- 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
- 230000005405 multipole Effects 0.000 claims description 4
- 238000005530 etching Methods 0.000 claims description 2
- 230000004907 flux Effects 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 description 2
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Linear Motors (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
本発明は、簡単な構成上の改良によって推力を増大でき
るようにした永久磁石形リニアパルスモータに関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a permanent magnet type linear pulse motor whose thrust can be increased by simple structural improvements.
[従来の技術]
永久磁石形リニアパルスモータとしては、スライダー側
の電磁石を構成する各磁極の先端部に多極に着磁した永
久磁石を備える構成のものが知られている。[Prior Art] As a permanent magnet type linear pulse motor, one is known in which a multi-pole magnetized permanent magnet is provided at the tip of each magnetic pole constituting an electromagnet on the slider side.
第4図(イ)〜(ニ)はそれぞれ従来のものの構成とそ
の動作原理を示すための正面図である。FIGS. 4(a) to 4(d) are front views showing the configuration and operating principle of conventional devices, respectively.
同図において、Rはスライダー、9はスケールである。In the figure, R is a slider and 9 is a scale.
スライダーRは、励磁コイル1a〜4aを備えた4個の
電磁石の磁極1〜4.これらの各磁極の先端部にスケー
ル9ftmのティーススロットに対応した微小長さの、
多極薄形の永久磁石5〜8を設けて成る。一方、スケー
ル9は、スライダーHの永久磁石5〜8と所定間隔を隔
てて対向設置され、対向面に誘導子歯を備えて構成され
る。The slider R has magnetic poles 1 to 4 of four electromagnets each having excitation coils 1a to 4a. At the tip of each of these magnetic poles, there is a minute length corresponding to a tooth slot with a scale of 9ftm.
It is provided with multi-thin permanent magnets 5 to 8. On the other hand, the scale 9 is disposed opposite the permanent magnets 5 to 8 of the slider H at a predetermined interval, and is configured to have inductor teeth on the opposing surface.
なお、(イ)〜(ニ)は移動磁界を発生する原埋を示す
ために、(ロ)以降の図ではコイルは図示せず9w1磁
されるコイルと通過磁束を符号により重点的に記載する
ようにしている。In addition, (a) to (d) indicate the original burial that generates a moving magnetic field, so in the figures after (b), the coil is not shown, and the coil that is magnetized by 9w1 and the passing magnetic flux are described with emphasis by symbols. That's what I do.
[発明が解決しようとする課題]
上記した永久磁石5〜8は、多極のため、理論上はこの
ような多極となる永久磁石を各磁極1〜4毎に製作した
ものを張り付けるようにしても良いが2このような製作
方法では生産効率が悪く。[Problems to be Solved by the Invention] Since the above-mentioned permanent magnets 5 to 8 have multiple poles, it is theoretically possible to attach a permanent magnet having such multiple poles to each of the magnetic poles 1 to 4. 2 Although it is possible to do so, the production efficiency is poor with this manufacturing method.
実際には多極着磁の手段によって各永久磁石を構成する
のが実情である。In reality, each permanent magnet is constructed by means of multipolar magnetization.
ところで、このように永久磁石に多極の着磁を行う場合
、とくに希土類の高性能磁石では、たとえば、第5図(
イ)にハツチを付して示すように。By the way, when magnetizing a permanent magnet with multiple poles in this way, especially for high-performance rare earth magnets, for example, as shown in Fig. 5 (
b) as shown with a hatch.
隣接するN[!、S極の各境目に未着磁部分M1〜M、
が必ず生じる。従って、第5図(イ)の構成は磁気的に
は同図(ロ)の構成と等価となる。Adjacent N[! , unmagnetized portions M1 to M at each boundary of the S pole,
will definitely occur. Therefore, the configuration shown in FIG. 5(a) is magnetically equivalent to the configuration shown in FIG. 5(b).
このため、永久磁石の未着磁部分を通過するコイルの起
磁力による磁束は、リニアパルスモータの推力には何等
貢献しない。Therefore, the magnetic flux caused by the magnetomotive force of the coil that passes through the unmagnetized portion of the permanent magnet does not contribute to the thrust of the linear pulse motor.
即ち、永久磁石に未着磁部分を有する場合には。That is, when the permanent magnet has an unmagnetized portion.
コイルを励磁した時、第5図(イ)に示す永久磁石の磁
極による磁束に加えて、コイルの起磁力による磁束が流
れた際に、これらの合成磁束は同図(ロ)に示すように
未着磁部分M1〜M、を含めて。When the coil is excited, in addition to the magnetic flux due to the magnetic poles of the permanent magnet shown in Figure 5 (a), when the magnetic flux due to the magnetomotive force of the coil flows, the combined magnetic flux is as shown in the same figure (b). Including unmagnetized portions M1 to M.
スライダー側の磁極からスケール9側に流れる。It flows from the magnetic pole on the slider side to the scale 9 side.
この結果、Ll+L2で示すような漏洩磁束が発生し、
磁極部の磁気飽和が早まり、リニアパルスモータの推力
を低下させる原因となっていた。As a result, leakage magnetic flux as shown by Ll+L2 is generated,
The magnetic saturation of the magnetic pole part was accelerated, causing a reduction in the thrust of the linear pulse motor.
[課題を解決するための手段]
本発明は、上記課題を解決するために、スライダー側ま
たはスケール側に多極に着磁した永久磁石を備える永久
磁石形リニアパルスモータにおいて、永久磁石の未着磁
部分に隣接する部分にスリットを形成するようにした永
久磁石形リニアパルスモータに関するものである。[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a permanent magnet type linear pulse motor equipped with a multi-pole magnetized permanent magnet on the slider side or the scale side. This invention relates to a permanent magnet type linear pulse motor in which a slit is formed in a portion adjacent to a magnetic portion.
[実施例]
以下第1図および第2図に示す本発明の第1および第2
の各実施例について説明する。各図において第4図と均
等な構成についてはこれと同等な符号を付して示した。[Example] First and second embodiments of the present invention shown in FIGS. 1 and 2 below
Each example will be explained. In each figure, components equivalent to those in FIG. 4 are designated by the same reference numerals.
第1図は本発明の第1の実施例を示すものである。同図
において、10a+〜10a+2はそれぞれスリットで
1永久磁石5〜8の各未着磁部分M + 。FIG. 1 shows a first embodiment of the invention. In the figure, 10a+ to 10a+2 are slits, respectively, and unmagnetized portions M + of one permanent magnet 5 to 8.
M 2 、 M 3と隣接する各磁極1〜4の境界部分
に複数個(たとえば各3個)形成される。A plurality of (for example, three each) are formed at the boundary between M 2 and M 3 and adjacent magnetic poles 1 to 4.
第2図(イ)〜(ハ)は本発明の第2の実施例を示すも
ので、この場合には永久磁石11をスライダー側ではな
くスケール側に備え、この永久磁石11を図示のように
、N、S、N、S・・・・の極性となるようにした永久
磁石板を用い、この各永久磁石板11の未着磁となる各
磁極の境界部分に隣接する中間層として複数個のスリッ
トS+。FIGS. 2(a) to 2(c) show a second embodiment of the present invention. In this case, the permanent magnet 11 is provided not on the slider side but on the scale side, and this permanent magnet 11 is placed on the scale side as shown in the figure. , N, S, N, S, etc., and use a plurality of permanent magnet plates as intermediate layers adjacent to the boundary portions of each unmagnetized magnetic pole of each permanent magnet plate 11. Slit S+.
S 2. S *、 S 4・・・を形成したスリット
板を用い、永久磁石板11.スリット板12.基板13
との各相互間を接着剤Zl、Z2により一体となるよう
に接着してスケール9′を構成する。なお。S2. Using a slit plate formed with S*, S4..., a permanent magnet plate 11. Slit plate 12. Board 13
The scale 9' is constructed by adhering the two parts together with adhesives Zl and Z2. In addition.
この場合のスリット板に対するスリットの形成はハーフ
エツチングの方法で行えば良い。In this case, the slits may be formed in the slit plate by a half-etching method.
[作用]
本発明による永久磁石形のリニアパルスモータでは、上
記のように永久磁石の各磁極境界に生じる未着磁部分に
隣接する磁束通路にスリットを設けるようにしたため、
磁気回路的には第3図(イ)は同図(ロ)に示す構成と
なる。[Function] In the permanent magnet type linear pulse motor according to the present invention, slits are provided in the magnetic flux path adjacent to the unmagnetized portions that occur at the boundaries of each magnetic pole of the permanent magnet as described above.
In terms of the magnetic circuit, FIG. 3(A) has the configuration shown in FIG. 3(B).
従って、永久磁石による起磁力、コイルによる起磁力に
基く合成磁束は同図(ロ)に示すように流れ、従来、未
着磁部分M1〜M、を通過していた漏洩磁束り、、L2
は上記スリット10a、〜10ai(第2図の第2の実
施例の場合にはスリットS l+ S 2. S 3・
・・・)の存在によって流れなくなる。Therefore, the composite magnetic flux based on the magnetomotive force of the permanent magnet and the magnetomotive force of the coil flows as shown in the same figure (b), and the leakage magnetic flux that conventionally passed through the unmagnetized parts M1 to M, L2
are the slits 10a, -10ai (in the case of the second embodiment shown in FIG. 2, the slits S1+S2.S3.
), the flow stops due to the presence of
[発明の効果]
上記のように本発明の永久磁石形のリニアパルスモータ
は、従来のものにおいて、永久磁石の各磁極境界に生じ
る未着磁部分に隣接するスライダーまたはスケールの境
界部分にスリットを設けるだけの簡羊な構成によって1
次のような優れた特長を有する。[Effects of the Invention] As described above, the permanent magnet type linear pulse motor of the present invention differs from conventional ones in that a slit is provided at the boundary portion of the slider or scale adjacent to the unmagnetized portion that occurs at each magnetic pole boundary of the permanent magnet. 1 with a simple configuration that only requires installation.
It has the following excellent features.
■従来のものにおいて、永久磁石の未着磁部分がら漏れ
ていた不要な磁束がなくなるので、磁極部での磁束密度
を低下(ギャップ部の磁束密度は上昇)させることがで
き、リニアパルスモータの推力を増大できる。■Unnecessary magnetic flux that leaked from the unmagnetized parts of the permanent magnet in conventional magnets is eliminated, so the magnetic flux density at the magnetic poles can be reduced (the magnetic flux density at the gap is increased), and the linear pulse motor Thrust can be increased.
■スリットの部分においても、永久磁石を下面に張り付
ける通常型のリニアパルスモータの場合と同様にレラク
タンス力が作用するため、この点でもリニアパルスモー
タの推力は増大し、結局、全体で、リニアパルスモータ
の推力を大幅に増大させることができる。■The same reluctance force acts on the slit part as in the case of a normal linear pulse motor with a permanent magnet attached to the bottom surface, so the thrust of the linear pulse motor increases at this point as well, and in the end, the overall linear The thrust of the pulse motor can be significantly increased.
第1図および第2図は本発明の第1および第2の実施例
を示すもので、その内、第1図は正面図。
第2図(イ)は正面図、同図(ロ)は分解斜視図。
同図(ハ)は部分断面図である。
また、第3図(イ)、(ロ)はそれぞれ本発明の第1の
実施例についての動作を説明するための部分正面図、さ
らに、第4図および第5図はそれぞれ従来例の場合を示
すもので、その内、第4図(イ)〜(ニ)はその構成と
原理を示す正面図。
第5図(イ)および(ロ)はそれぞれその動作を示す部
分正面図である。
1〜4:磁極
5〜8:永久磁石
11:永久磁石板
10a1〜10a+2ニスリツト
S +、 S 2. S 3. S 4・・・ニスリッ
ト12;スリット板
13二基板
M1〜M3:未着磁部分
9.9° ニスケール
Rニスライダー1 and 2 show first and second embodiments of the present invention, of which FIG. 1 is a front view. Figure 2 (A) is a front view, and Figure 2 (B) is an exploded perspective view. Figure (C) is a partial sectional view. Furthermore, FIGS. 3(A) and 3(B) are partial front views for explaining the operation of the first embodiment of the present invention, and FIGS. 4 and 5 are respectively for the conventional example. Figures 4(a) to 4(d) are front views showing the structure and principle thereof. FIGS. 5(a) and 5(b) are partial front views showing the operation, respectively. 1-4: Magnetic poles 5-8: Permanent magnet 11: Permanent magnet plates 10a1-10a+2 Nislit S+, S2. S 3. S4... Nislit 12; Slit plate 13 Two substrates M1 to M3: Unmagnetized portion 9.9° Niscale R Nislider
Claims (1)
多極に着磁した永久磁石を備える永久磁石形リニアパル
スモータにおいて、上記永久磁石の未着磁部分に隣接す
る部分にスリットを形成するようにしたことを特徴とす
る永久磁石形リニアパルスモータ。 2、スライダーの電磁石を構成する各磁極に対向するス
ケール側の面に多極に着磁した永久磁石を備える永久磁
石形リニアパルスモータにおいて、この永久磁石の未着
磁部分に隣接する部分にスリットを形成するするように
したことを特徴とする永久磁石形リニアパルスモータ。 3、スリットの形成をハーフエッチングにより行うよう
にした請求項2記載の永久磁石形リニアパルスモータ。[Scope of Claims] 1. In a permanent magnet type linear pulse motor comprising a multi-pole magnetized permanent magnet at the tip of each magnetic pole constituting the electromagnet on the slider side, the permanent magnet is adjacent to the non-magnetized portion of the permanent magnet. A permanent magnet type linear pulse motor characterized by having slits formed in its parts. 2. In a permanent magnet type linear pulse motor, which is equipped with a multi-pole magnetized permanent magnet on the scale side surface facing each magnetic pole that constitutes the electromagnet of the slider, a slit is provided in the part adjacent to the unmagnetized part of this permanent magnet. A permanent magnet type linear pulse motor characterized by forming a permanent magnet type linear pulse motor. 3. A permanent magnet type linear pulse motor according to claim 2, wherein the slits are formed by half etching.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12700788A JPH01298945A (en) | 1988-05-26 | 1988-05-26 | Permanent magnet type linear pulse motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12700788A JPH01298945A (en) | 1988-05-26 | 1988-05-26 | Permanent magnet type linear pulse motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01298945A true JPH01298945A (en) | 1989-12-01 |
Family
ID=14949378
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12700788A Pending JPH01298945A (en) | 1988-05-26 | 1988-05-26 | Permanent magnet type linear pulse motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01298945A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003049263A1 (en) * | 2001-12-03 | 2003-06-12 | Shinko Electric Co., Ltd. | Linear actuator |
US6674186B2 (en) | 2001-05-10 | 2004-01-06 | Smc Kabushiki Kaisha | Linear motor |
JP2006109639A (en) * | 2004-10-06 | 2006-04-20 | Shinko Electric Co Ltd | Pulse motor |
EP1919063A1 (en) * | 2006-11-02 | 2008-05-07 | Sy.Tra.Ma. S.R.L. | Flux-reversal linear motor |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59132380A (en) * | 1983-01-19 | 1984-07-30 | Yokogawa Hokushin Electric Corp | Three-dimensional magnetic flux detection coil |
JPS61277362A (en) * | 1985-05-30 | 1986-12-08 | Yaskawa Electric Mfg Co Ltd | Three-phase linear inductor type synchronous motor |
JPS63257450A (en) * | 1987-04-13 | 1988-10-25 | Hitachi Ltd | Step actuator |
-
1988
- 1988-05-26 JP JP12700788A patent/JPH01298945A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59132380A (en) * | 1983-01-19 | 1984-07-30 | Yokogawa Hokushin Electric Corp | Three-dimensional magnetic flux detection coil |
JPS61277362A (en) * | 1985-05-30 | 1986-12-08 | Yaskawa Electric Mfg Co Ltd | Three-phase linear inductor type synchronous motor |
JPS63257450A (en) * | 1987-04-13 | 1988-10-25 | Hitachi Ltd | Step actuator |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6674186B2 (en) | 2001-05-10 | 2004-01-06 | Smc Kabushiki Kaisha | Linear motor |
DE10220822B4 (en) * | 2001-05-10 | 2020-07-02 | Smc K.K. | Linear motor |
WO2003049263A1 (en) * | 2001-12-03 | 2003-06-12 | Shinko Electric Co., Ltd. | Linear actuator |
US7382067B2 (en) | 2001-12-03 | 2008-06-03 | Shinko Electric Co., Ltd. | Linear actuator |
US7476990B2 (en) | 2001-12-03 | 2009-01-13 | Shinko Electric Co., Ltd. | Linear actuator |
JP2006109639A (en) * | 2004-10-06 | 2006-04-20 | Shinko Electric Co Ltd | Pulse motor |
EP1919063A1 (en) * | 2006-11-02 | 2008-05-07 | Sy.Tra.Ma. S.R.L. | Flux-reversal linear motor |
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