JP3150822B2 - Linear motor - Google Patents
Linear motorInfo
- Publication number
- JP3150822B2 JP3150822B2 JP12465393A JP12465393A JP3150822B2 JP 3150822 B2 JP3150822 B2 JP 3150822B2 JP 12465393 A JP12465393 A JP 12465393A JP 12465393 A JP12465393 A JP 12465393A JP 3150822 B2 JP3150822 B2 JP 3150822B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- mover
- stator
- permanent magnet
- permanent magnets
- 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 - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、工作機械等で位置決め
に使用するリニアモータに関し、特にその可動子及び固
定子の構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linear motor used for positioning in a machine tool or the like, and more particularly to a structure of a mover and a stator thereof.
【０００２】[0002]
【従来の技術】工作機械等において直線運動を得るに
は、機械的な変換（回転機とボールねじや、ラック＆ピ
ニオンギアなどによる直線変換）が主に利用されている
が、リニアモータを利用することにより機械的な変換が
不要になるため、高速化、非接触駆動、ダイレクト・ド
ライブ、静粛性（発生音が少なく、低振動）、構造のシ
ンプル化、メンテナンスフリーを実現することができ
る。図８は従来のリニアモータの一例を示す断面図であ
る。鉄心７２の内側に、複数個の永久磁石７１が隣接す
る永久磁石７１および対向する永久磁石７１が互いに異
極となるように並設され接着された固定子と、フレーム
７３に多相（図ではＵ，Ｖ，Ｗ相）の巻線が備えられ、
対向する永久磁石７１間の空隙にて移動する可動子が具
備されるという構造をしている。このタイプのリニアモ
ータでは推力を上げるために、巻線に大電流を流した
り、対向する永久磁石間の距離を短くして空隙部の磁束
密度を上げるという工夫をしている。2. Description of the Related Art To obtain a linear motion in a machine tool or the like, mechanical conversion (linear conversion using a rotating machine and a ball screw, a rack and pinion gear, etc.) is mainly used, but a linear motor is used. This eliminates the need for mechanical conversion, so that high speed, non-contact drive, direct drive, quietness (less noise, low vibration), simplified structure, and maintenance-free operation can be realized. FIG. 8 is a sectional view showing an example of a conventional linear motor. Inside the iron core 72, a plurality of permanent magnets 71 are adjacent to and adjacent to the permanent magnet 71 and the fixed permanent magnet 71 are attached so that the opposite permanent magnets have opposite polarities. U, V, W phases)
It has a structure in which a mover that moves in a gap between the opposed permanent magnets 71 is provided. In order to increase the thrust in this type of linear motor, a large current is applied to the windings, and the distance between the opposed permanent magnets is shortened to increase the magnetic flux density in the gap.
【０００３】[0003]
【発明が解決しようとする課題】上述したような従来の
リニアモータでの推力を上げる一方の手段である巻線の
大電流化は、巻線からの発熱が制御上問題となるため、
他方の手段である空隙部の高磁束密度化が通常採用され
ている。しかしながら可動子構成体の幅は薄くなり、機
械構造的に支持機構への負担が増加するという欠点があ
る。これを解決するためには複数のリニアモータを並行
動作させるようなシステムを作れば良いのだが、永久磁
石や可動子（巻線）などが倍以上必要となりコストが上
昇するという問題があった。また、従来のリニアモータ
では、燒結体である永久磁石を使用するため衝撃に弱
く、組立や運搬の際に永久磁石が破損してしまい不良品
となることがある。それを防ぐには樹脂などで永久磁石
表面を保護するなどの工夫が必要になるが、樹脂の成型
や材料などのコストがかかるという欠点があった。さら
に永久磁石はそれぞれ鉄心に接着する必要があるため、
接着・乾燥・固定などに時間がかかってしまうという欠
点があった。そして、永久磁石により界磁を発生させる
が、永久磁石の異極を隣合わせて配置させるため、空隙
の磁束密度分布は矩形波上に分布することになる。これ
は、可動子と固定子の間隙のギャップパーミアンスの変
化となり、磁気的な不均衡が原因で推力波形に脈動が生
じるという問題があった。本発明は上述した事情から成
されたものであり、本発明の目的はコストが低く、特性
が安定し、機械的に堅牢なリニアモータを提供すること
にある。In order to increase the thrust in the conventional linear motor as described above, increasing the current of the winding, which is one of the means for increasing the thrust, involves a problem in control of the heat generated from the winding.
The other means, that is, high magnetic flux density in the air gap is usually adopted. However, there is a disadvantage that the width of the mover structure is reduced, and the load on the support mechanism is increased mechanically. To solve this problem, it is only necessary to create a system that operates a plurality of linear motors in parallel. However, there is a problem in that permanent magnets, movers (windings), and the like are required more than twice, and the cost is increased. Further, the conventional linear motor uses a permanent magnet which is a sintered body, and thus is vulnerable to impact. The permanent magnet may be damaged during assembly or transportation, resulting in a defective product. To prevent this, some measures such as protecting the surface of the permanent magnet with a resin or the like are required, but there is a disadvantage in that the cost of resin molding and material is high. Furthermore, since each permanent magnet needs to be bonded to the iron core,
There is a disadvantage that it takes time to bond, dry, fix, and the like. Then, a field is generated by the permanent magnet, but since the different poles of the permanent magnet are arranged adjacent to each other, the magnetic flux density distribution of the air gap is distributed on a rectangular wave. This results in a change in the gap permeance of the gap between the mover and the stator, and there has been a problem that pulsation occurs in the thrust waveform due to magnetic imbalance. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a linear motor that is low in cost, has stable characteristics, and is mechanically robust.
【０００４】[0004]
【課題を解決するための手段】本発明は、永久磁石を使
用したリニアモータに関するものであり、上記目的は中
空構造のフレームの外側に巻線が備えられた可動子と、
複数個の第１の永久磁石が空隙を介して向かい合う磁極
が同極となるように前記可動子の移動方向に並設され、
前記第１の永久磁石の磁極を構成する部分の可動子に対
向する面の断面形状が、可動子の移動方向に対して永久
磁石の間は円弧状の突極形状を成すとともに、磁極性が
反転する磁気橋絡部が直線状の逆突極形状を成す磁性材
料にて被覆され、かつ前記可動子をその外面から励磁す
る第１の固定子と、複数個の第２の永久磁石が空隙を介
して向かい合う磁極が同極となるように、かつ前記第１
の永久磁石と対応する磁極が異極となるように前記可動
子の移動方向に並設され、前記第２の永久磁石の磁極を
構成する部分の可動子面に対向する面の断面形状が、可
動子の移動方向に対して永久磁石の間は直線状の突極形
状を成すとともに、磁極性が反転する磁気橋絡部が円弧
状の逆突極形状を成す磁性材料にて被覆され、かつ前記
可動子をその内面から励磁する第２の固定子とを具備す
ることにより達成される。SUMMARY OF THE INVENTION The present invention relates to a linear motor using a permanent magnet, and an object of the present invention is to provide a mover provided with a winding outside a hollow frame.
A plurality of first permanent magnets are juxtaposed in the moving direction of the mover such that magnetic poles facing each other via the air gap have the same polarity;
A pair of the mover of the portion constituting the magnetic pole of the first permanent magnet is
The cross-sectional shape of the facing surface is permanent in the moving direction of the mover.
An arc-shaped salient pole shape is formed between the magnets, and the magnetic polarity is
An inverting magnetic bridging portion is covered with a magnetic material having a linear inverted salient pole shape , and a first stator for exciting the mover from its outer surface and a plurality of second permanent magnets are provided in a gap. And the first and second magnetic poles facing each other have the same polarity.
The permanent magnets and the corresponding magnetic poles are arranged side by side in the moving direction of the mover so as to have different polarities, and the cross-sectional shape of the surface facing the mover surface of the portion constituting the magnetic pole of the second permanent magnet is: Yes
Straight salient poles between the permanent magnets in the moving direction of the rotor
The magnetic bridge where the magnetic polarity is reversed
Is coated with a magnetic material forming the Jo reverse salient pole shape, and is achieved by having a second stator for energizing said movable element from the inner surface thereof.
【０００５】[0005]
【作用】本発明にあっては、２系統の固定子により可動
子の内側と外側から励磁できる構造とした為、空隙の磁
束密度が向上し、効率の向上が図れる。また、永久磁石
の保護・固定のために磁性材料を使用したことにより、
前述のことと併せもって材料費及び組立の際の工数や時
間の節減ができる。According to the present invention, since the two stators are used to excite the inside and outside of the mover, the magnetic flux density in the air gap is improved and the efficiency is improved. In addition, by using magnetic material for protection and fixing of permanent magnet,
In addition to the above, material costs and man-hours and time required for assembly can be reduced.
【０００６】[0006]
【実施例】以下図面に基づいて本発明の実施例を具体的
に説明する。図１は本発明のリニアモータの一例を示す
上部より見た部分断面図であり、図２は横から見た部分
断面図である。また図３は可動子の進行方向より見た部
分断面図である。このリニアモータは、複数のスロット
を有するフレーム５とスロットに巻回された多相巻線６
ａ，６ｂ，６ｃとで構成される可動子を備えている。そ
して、永久磁石１及び磁性材料板３で構成され、可動子
に対して外側より励磁する第１の固定子と永久磁石２及
び磁性材料板４で構成され、可動子に対して内側より励
磁する第２の固定子と、第１の固定子及び第２の固定子
を継持する磁性材料ブロック３２とで構成される固定子
を備えている。図１に示すように、複数個の永久磁石１
は永久磁石１の磁極を構成する部分の可動子に対向する
面の断面形状が、可動子の移動方向に対して永久磁石１
の間は円弧状の突極形状を成すとともに、磁極性が反転
する磁気橋絡部が直線状の逆突極形状を成す磁性材料に
て被覆され、複数個の永久磁石２は永久磁石２の磁極を
構成する部分の可動子に対向する面の断面形状が、可動
子の移動方向に対して永久磁石２の間は直線状の突極形
状を成すとともに、磁極性が反転する磁気橋絡部が円弧
状の逆突極形状を成す磁性材料にて被覆されている。 DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a partial sectional view of an example of the linear motor of the present invention as viewed from above, and FIG. 2 is a partial sectional view as viewed from the side. FIG. 3 is a partial cross-sectional view as seen from the moving direction of the mover. This linear motor comprises a frame 5 having a plurality of slots and a polyphase winding 6 wound around the slots.
a, 6b, and 6c. The first stator is constituted by the permanent magnet 1 and the magnetic material plate 3 and is excited from the outside with respect to the mover. The first stator is constituted by the permanent magnet 2 and the magnetic material plate 4 and is excited from the inside with respect to the mover. The stator includes a second stator and a magnetic material block 32 that carries over the first stator and the second stator. As shown in FIG.
Is opposed to the mover of the portion constituting the magnetic pole of the permanent magnet 1
The cross-sectional shape of the surface is such that the permanent magnet 1
Has an arc-shaped salient pole shape and the magnetic polarity is reversed
Magnetic bridging part has a linear inverted salient pole shape
And the plurality of permanent magnets 2
The cross-sectional shape of the surface of the constituent part facing the mover
A linear salient pole between the permanent magnets 2 in the moving direction of the armature
The magnetic bridge where the magnetic polarity is reversed
Is covered with a magnetic material having a reverse salient pole shape.
【０００７】まず、可動子について説明する。図４に示
すようなフレーム５に備えられているスロット１１ａ〜
１１ｃ、１２ａ〜１２ｃに多相巻線（図ではＵ、Ｖ、Ｗ
相の３相）６ａ，６ｂ，６ｃが巻かれている。この例で
はコの字状のスロットを対１１ａと１２ａ、１１ｂと１
２ｂ、１１ｃと１２ｃにして、それらの側面→上面→側
面→側面→上面→側面を通るように巻線６ａ，６ｂ，６
ｃが巻かれているが、対のスロットの上面のみ及び側面
のみで巻線６ａ，６ｂ，６ｃを巻いても良い。これらの
スロットは、機械的に巻線を保護する役割と巻線が発生
する熱を放熱する役割を併せ持つ。フレーム５にはテー
ブル２１が穴４１を貫通するボルト７により直接取付け
られており、可動子とテーブル２１との剛性を向上させ
ている。またテーブル２１は、リニアベアリング３１を
介して台座３３に直線移動可能に載置されている。First, the mover will be described. Slots 11a to 11 provided in the frame 5 as shown in FIG.
11c, 12a to 12c are multi-phase windings (U, V, W
3a), 6a, 6b and 6c are wound. In this example, the U-shaped slots are paired 11a and 12a, 11b and 1
2b, 11c and 12c, and the windings 6a, 6b and 6 pass through the side surface → the upper surface → the side surface → the side surface → the upper surface → the side surface.
Although c is wound, the windings 6a, 6b, and 6c may be wound only on the upper surface and the side surface of the pair of slots. These slots have both a role of mechanically protecting the winding and a role of radiating heat generated by the winding. The table 21 is directly attached to the frame 5 by the bolts 7 penetrating the holes 41, thereby improving the rigidity between the mover and the table 21. The table 21 is mounted on a pedestal 33 via a linear bearing 31 so as to be linearly movable.
【０００８】次に固定子について説明する。可動子に対
して外側より励磁する固定子である第１の固定子は、永
久磁石１が磁性材料板３の積層体の中に固定される構造
をとり、ボルト９により磁性材料ブロック３２に固定さ
れている。同様に可動子に対して内側より励磁する固定
子である第２の固定子は、永久磁石２が磁性材料板４の
積層体の中に固定される構造をとり、ボルト１０により
磁性材料ブロック３２に固定されている。第１の固定子
と第２の固定子は、共に磁性材料ブロック３２に固定さ
れており磁気回路を構成している。保護板８は、永久磁
石１を固定するのと同時に第１の固定子を保護する役割
を持ち、ボルト９により磁性材料板３と磁性材料ブロッ
ク３２に共締めされている。固定子全体は台座３２に固
定されている。図２に示す例では、移動方向に対する可
動子の巻線端から巻線端の長さをλとした時、磁石（磁
極）１極の長さをλ／２とし、可動子巻線１相分の長さ
をλ／６とするように構成している。Next, the stator will be described. The first stator, which is a stator that is excited from the outside with respect to the mover, has a structure in which the permanent magnet 1 is fixed in a laminated body of the magnetic material plates 3 and is fixed to the magnetic material block 32 by bolts 9. Have been. Similarly, the second stator, which is a stator that is excited from the inside with respect to the mover, has a structure in which the permanent magnet 2 is fixed in the laminated body of the magnetic material plates 4, and the magnetic material block 32 is fixed by bolts 10. It is fixed to. The first stator and the second stator are both fixed to the magnetic material block 32 and constitute a magnetic circuit. The protection plate 8 has a role of protecting the first stator at the same time as fixing the permanent magnet 1, and is fastened to the magnetic material plate 3 and the magnetic material block 32 by bolts 9. The whole stator is fixed to the pedestal 32. In the example shown in FIG. 2, when the length of the winding end from the winding end of the mover to the moving direction is λ, the length of one pole of the magnet (magnetic pole) is λ / 2, The length of the minute is set to λ / 6.
【０００９】図５は第１の固定子、図６は第２の固定子
の部分拡大図である。磁性材料板３と４は積層体で構成
されており、その抜き部分が永久磁石１と２をそれぞれ
固定するのに使用される。図５に示す様に第１の固定子
では、磁極を構成する曲線部の中心の距離ｄ１と永久磁
石２の距離ｄ２はｄ１＞＞ｄ２という関係である。ま
た、図６では同様にｄ３＞＞ｄ４という関係である。ｄ
２，ｄ４の部分は、磁気回路的に見て短絡（空隙の磁気
エネルギーの低下）するように働くが、間隔ｄ２，ｄ４
が短い為に磁気飽和をする。そのため、永久磁石表面の
磁気エネルギーは磁石中心部ほど強く、磁石端に行くほ
ど弱くなる効果がある。可動子側から見るとｄ１〜ｄ
２、ｄ３〜ｄ４の凹凸と、前記の効果により磁極の磁気
エネルギー分布は磁極中心部ほど強く、磁極端に行くほ
ど弱くなる傾向は顕著となる。 推力波形の脈動を低下
させるために、空隙部の磁束密度（磁気エネルギー）を
正弦波状にするには、ｄ１〜ｄ２の凹凸の割合とｄ２，
ｄ４の距離を操作することにより実現できる。FIG. 5 is a partially enlarged view of the first stator, and FIG. 6 is a partially enlarged view of the second stator. The magnetic material plates 3 and 4 are formed of a laminate, and the cutout portions are used to fix the permanent magnets 1 and 2 respectively. As shown in FIG. 5, in the first stator, the distance d1 of the center of the curved portion constituting the magnetic pole and the distance d2 of the permanent magnet 2 have a relationship of d1 >> d2. Also, in FIG. 6, d3 >> d4. d
The portions d2 and d4 act as a short circuit (reduction of magnetic energy in the air gap) in terms of a magnetic circuit.
Is short, causing magnetic saturation. Therefore, there is an effect that the magnetic energy on the surface of the permanent magnet becomes stronger toward the center of the magnet and becomes weaker toward the end of the magnet. D1 to d when viewed from the mover side
2. Due to the irregularities of d3 to d4 and the above-described effect, the magnetic energy distribution of the magnetic pole becomes stronger toward the center of the magnetic pole, and becomes weaker toward the magnetic pole. In order to reduce the pulsation of the thrust waveform and to make the magnetic flux density (magnetic energy) in the gap portion sinusoidal, the ratio of the irregularities d1 to d2 and d2
It can be realized by manipulating the distance d4.
【００１０】図５と図６の磁性材料板３、４には、それ
ぞれボルト９、１０を通す穴が空いており、これにより
磁性材料ブロック３２に固定されている。またこの磁性
材料板３、４にはそれぞれ空隙５１と６１が空いている
が、これは電機子反作用による磁極内での磁束の片寄り
を低減させる働きをさせる役割と、固定子の重量を軽減
させる役割を持つ。図７は可動子から見た磁束分布の様
子を示している。従来方式の磁束分布では、磁束の分布
は矩形波状に分布（波形ａ）しているが本実施例では、
磁極中心ほど磁束分布は高く、磁極の切り替わりでは低
くなり、正弦波に近く分布（波形ｃ）し、推力波形の脈
動が低減される。ただし、磁性材料板３、４の空隙５１
と６１がない場合、電機子反作用による影響が顕著に出
て、高調波を含んだ正弦波状分布（波形ｂ）になってし
まい推力波形に脈動として現われることとなる。なお、
本発明は前述の図１から図６に限定されるものでなく、
図１から図６の可動子と固定子を入れ替えた構造にして
も良い。また、図３に示すように可動子の断面はコの字
状になっているが、断面を中空の□状にし、第２の固定
子に棒状磁石を使用しても良い。The magnetic material plates 3 and 4 shown in FIGS. 5 and 6 have holes through which bolts 9 and 10 are passed, respectively, and are fixed to the magnetic material block 32 by these. The magnetic material plates 3 and 4 have voids 51 and 61, respectively, which serve to reduce the deviation of magnetic flux in the magnetic pole due to the armature reaction and reduce the weight of the stator. Have a role to let. FIG. 7 shows the state of the magnetic flux distribution viewed from the mover. In the conventional magnetic flux distribution, the magnetic flux is distributed in a rectangular wave shape (waveform a).
The magnetic flux distribution becomes higher toward the center of the magnetic pole, becomes lower when the magnetic pole is switched, distributes closer to a sine wave (waveform c), and the pulsation of the thrust waveform is reduced. However, the gap 51 between the magnetic material plates 3 and 4
In the case where there is no and 61, the effect of the armature reaction is remarkable, and a sinusoidal distribution (waveform b) including harmonics appears and appears as a pulsation in the thrust waveform. In addition,
The present invention is not limited to FIGS. 1 to 6 described above,
The structure in which the mover and the stator shown in FIGS. 1 to 6 are replaced may be adopted. Although the cross section of the mover has a U-shape as shown in FIG. 3, the cross section may be hollow square and a bar-shaped magnet may be used for the second stator.
【００１１】[0011]
【発明の効果】以上のように本発明によるリニアモータ
によれば、可動子を中空構造にし可動子の内側と外側か
ら励磁するため、磁気回路的に見て有効に永久磁石の磁
気エネルギーを使用して、効率を向上させることができ
ると共に可動子の機械的構造を強化することができる。
また永久磁石を保護・固定するために磁性材料を使用し
たことにより、運搬の際の不良率を低下させることがで
きると共に、従来の永久磁石の接着等の工数を削減する
ことができる。さらに、磁極を構成する磁性材料板は凹
凸が設けられていると共に、磁極が異極になる部分が磁
気回路的に短絡されているため、固定子から見ると磁気
エネルギー分布（磁束密度）は、磁石（磁極）中心程高
くなっており、逆に磁石（磁極）中心から離れる程低く
なっている。このことにより、磁束密度分布は正弦波に
近づくことになり、推力波形の脈動を低減することがで
きる。As described above, according to the linear motor of the present invention, since the movable element has a hollow structure and is excited from inside and outside of the movable element, the magnetic energy of the permanent magnet is effectively used in terms of a magnetic circuit. As a result, the efficiency can be improved and the mechanical structure of the mover can be strengthened.
In addition, by using a magnetic material to protect and fix the permanent magnet, the defective rate during transportation can be reduced, and man-hours such as conventional bonding of the permanent magnet can be reduced. Furthermore, since the magnetic material plate constituting the magnetic pole is provided with irregularities and the part where the magnetic pole is of a different polarity is short-circuited in a magnetic circuit, the magnetic energy distribution (magnetic flux density) as viewed from the stator is: It is higher at the center of the magnet (magnetic pole), and conversely becomes lower as the distance from the center of the magnet (magnetic pole) increases. As a result, the magnetic flux density distribution approaches a sine wave, and pulsation of the thrust waveform can be reduced.
【図１】本発明のリニアモータの一例を示す上部より見
た部分断面図である。FIG. 1 is a partial cross-sectional view of an example of a linear motor according to the present invention as viewed from above.
【図２】本発明のリニアモータの一例を示す横から見た
部分断面図である。FIG. 2 is a partial cross-sectional view showing one example of the linear motor of the present invention as viewed from the side.
【図３】本発明のリニアモータの一例を示す可動子の進
行方向より見た部分断面図である。FIG. 3 is a partial cross-sectional view showing an example of a linear motor according to the present invention as viewed from a moving direction of a mover.
【図４】本発明のリニアモータの可動子のフレームの一
例を示す斜視図である。FIG. 4 is a perspective view showing an example of a frame of a mover of the linear motor of the present invention.
【図５】本発明のリニアモータの第１の固定子の部分拡
大図である。FIG. 5 is a partially enlarged view of a first stator of the linear motor of the present invention.
【図６】本発明のリニアモータの第２の固定子の部分拡
大図である。FIG. 6 is a partially enlarged view of a second stator of the linear motor of the present invention.
【図７】本発明のリニアモータの可動子側から見た磁束
分布の様子を示した図である。FIG. 7 is a diagram showing a state of a magnetic flux distribution of the linear motor of the present invention as viewed from the mover side.
【図８】従来のリニアモータの一例を示す断面図であ
る。FIG. 8 is a sectional view showing an example of a conventional linear motor.
１、２、７１ 永久磁石 ３、４ 磁性材料板 ５、７３ フレーム ６ａ、６ｂ、６ｃ、７４ａ、７４ｂ、７４ｃ 巻線 ７、９、１０ ボルト ８ 保護板 １１ａ、１１ｂ、１１ｃ、１２ａ、１２ｂ、１２ｃ ス
ロット ２１ テーブル ３１ リニアベアリング ３２ 磁性材料ブロック ３３ 台座 ４１ ボルト穴 ５１、６１ 空隙 ７２ 鉄心1, 2, 71 Permanent magnet 3, 4, Magnetic material plate 5, 73 Frame 6a, 6b, 6c, 74a, 74b, 74c Winding 7, 9, 10 Volt 8 Protective plate 11a, 11b, 11c, 12a, 12b, 12c Slot 21 Table 31 Linear bearing 32 Magnetic material block 33 Pedestal 41 Bolt hole 51, 61 Air gap 72 Iron core
Claims (2)
れた可動子と、複数個の第１の永久磁石が空隙を介して
向かい合う磁極が同極となるように前記可動子の移動方
向に並設され、前記第１の永久磁石の磁極を構成する部
分の可動子に対向する面の断面形状が、可動子の移動方
向に対して永久磁石の間は円弧状の突極形状を成すとと
もに、磁極性が反転する磁気橋絡部が直線状の逆突極形
状を成す磁性材料にて被覆され、かつ前記可動子をその
外面から励磁する第１の固定子と、複数個の第２の永久
磁石が空隙を介して向かい合う磁極が同極となるよう
に、かつ前記第１の永久磁石と対応する磁極が異極とな
るように前記可動子の移動方向に並設され、前記第２の
永久磁石の磁極を構成する部分の可動子面に対向する面
の断面形状が、可動子の移動方向に対して永久磁石の間
は直線状の突極形状を成すとともに、磁極性が反転する
磁気橋絡部が円弧状の逆突極形状を成す磁性材料にて被
覆され、かつ前記可動子をその内面から励磁する第２の
固定子とを備えたことを特徴とするリニアモータ。The moving direction of the mover so that a magnetic pole provided with a winding outside a hollow frame and a plurality of first permanent magnets facing each other via an air gap have the same polarity. And the cross-sectional shape of the surface of the portion that constitutes the magnetic pole of the first permanent magnet , facing the mover, is determined by the direction of movement of the mover.
If the permanent magnets between the permanent magnets have an arc-shaped salient pole shape
The reverse salient pole type in which the magnetic bridging part where the magnetic polarity is reversed is straight
The first stator, which is coated with a magnetic material having a shape , and excites the mover from its outer surface, and a plurality of second permanent magnets facing each other via a gap have the same polarity. And a surface facing the mover surface of a portion constituting the magnetic pole of the second permanent magnet, which is arranged in the moving direction of the mover such that magnetic poles corresponding to the first permanent magnet have different polarities.
Cross section between the permanent magnets in the moving direction of the mover
Has a linear salient pole shape and the magnetic polarity is reversed
A linear motor, wherein a magnetic bridge portion is covered with a magnetic material having an arc-shaped inverted salient pole shape , and a second stator for exciting the mover from its inner surface.
数枚の磁性材料板を積層した構造である請求項１に記載
のリニアモータ。2. The linear motor according to claim 1, wherein the magnetic material has a structure in which a plurality of magnetic material plates having a plurality of gaps are laminated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12465393A JP3150822B2 (en) | 1993-04-30 | 1993-04-30 | Linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12465393A JP3150822B2 (en) | 1993-04-30 | 1993-04-30 | Linear motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06319250A JPH06319250A (en) | 1994-11-15 |
| JP3150822B2 true JP3150822B2 (en) | 2001-03-26 |
Family
ID=14890735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12465393A Expired - Fee Related JP3150822B2 (en) | 1993-04-30 | 1993-04-30 | Linear motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3150822B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6347032B2 (en) | 1997-02-28 | 2002-02-12 | Showa Denko Kabushiki Kaisha | Capacitor |
| US6430026B1 (en) | 1999-06-09 | 2002-08-06 | Showa Denko K.K. | Electrode material for capacitors and capacitor using the same |
| US6529367B1 (en) | 1998-12-15 | 2003-03-04 | Showa Denko Kabushiki Kaisha | Niobium capacitor and method of manufacture thereof |
| KR101560279B1 (en) * | 2013-11-14 | 2015-10-15 | 주식회사 포스코건설 | Dousing water tank and method for providing water using the same |
| KR101560280B1 (en) * | 2013-11-14 | 2015-10-26 | 주식회사 포스코건설 | Water supplying pipe system and water providing using the same |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09140118A (en) * | 1995-09-12 | 1997-05-27 | Fanuc Ltd | Linear motor driving type feeder |
| DE19920626C2 (en) | 1999-05-05 | 2003-01-30 | Karl Hehl | Injection molding machine for processing plastics |
| JP2002064968A (en) * | 2000-08-21 | 2002-02-28 | Nippon Thompson Co Ltd | Slider with built-in moving coil linear motor |
| JP3848596B2 (en) * | 2002-06-11 | 2006-11-22 | ファナック株式会社 | Linear motor |
| JP4614752B2 (en) * | 2004-12-08 | 2011-01-19 | 海二 佐藤 | Linear motor |
| JP2007082352A (en) * | 2005-09-15 | 2007-03-29 | Institute Of Physical & Chemical Research | Linear actuator |
-
1993
- 1993-04-30 JP JP12465393A patent/JP3150822B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6347032B2 (en) | 1997-02-28 | 2002-02-12 | Showa Denko Kabushiki Kaisha | Capacitor |
| US6452777B1 (en) | 1997-02-28 | 2002-09-17 | Showa Denko Kabushiki Kaisha | Capacitor |
| US6529367B1 (en) | 1998-12-15 | 2003-03-04 | Showa Denko Kabushiki Kaisha | Niobium capacitor and method of manufacture thereof |
| US6661646B2 (en) | 1998-12-15 | 2003-12-09 | Showa Denko Kabushiki Kaisha | Niobium capacitor and method of manufacture thereof |
| US6430026B1 (en) | 1999-06-09 | 2002-08-06 | Showa Denko K.K. | Electrode material for capacitors and capacitor using the same |
| KR101560279B1 (en) * | 2013-11-14 | 2015-10-15 | 주식회사 포스코건설 | Dousing water tank and method for providing water using the same |
| KR101560280B1 (en) * | 2013-11-14 | 2015-10-26 | 주식회사 포스코건설 | Water supplying pipe system and water providing using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06319250A (en) | 1994-11-15 |
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| LAPS | Cancellation because of no payment of annual fees |