JP2000217334A - Linear motor - Google Patents
Linear motorInfo
- Publication number
- JP2000217334A JP2000217334A JP11015432A JP1543299A JP2000217334A JP 2000217334 A JP2000217334 A JP 2000217334A JP 11015432 A JP11015432 A JP 11015432A JP 1543299 A JP1543299 A JP 1543299A JP 2000217334 A JP2000217334 A JP 2000217334A
- Authority
- JP
- Japan
- Prior art keywords
- armature
- mounting plate
- linear motor
- core
- winding
- 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.)
- Granted
Links
Landscapes
- Linear Motors (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、工作機等のテーブ
ル送りに利用されるフラット形のリニアモータに関す
る。The present invention relates to a flat linear motor used for feeding a table of a machine tool or the like.
【０００２】[0002]
【従来の技術】従来、工作機械等のテーブル送りに利用
される永久磁石同期機形のリニアモータは、図５に示す
ように構成されている。図において、３１はリニアモー
タで、移動子である電機子取付板３２と、電機子取付板
３２に取付けられた電機子３３と、電機子３３に磁気的
空隙を介して対向し、かつ図示しない架台に固定された
界磁ヨーク３６と、この界磁ヨーク３６に交互に極性が
異なるように隣接して等ピッチで配置した永久磁石３７
ａ、３７ｂ、３７ｃ…とから構成されている。電機子３
３は、略Ｉ字形に打ち抜いた電磁鋼板の両側面に巻線収
納溝３４ａと凹凸状の係合部３４ｂ、３４ｃとを設け、
かつ電磁鋼板を積層した電機子コア３４を備えると共
に、電機子コア３４の巻線収納溝３４ａにＵ、Ｖ、Ｗ相
からなる電機子巻線３５を整列巻きして収納し、一つの
電機子ブロックを構成する。そして、一つの電機子コア
３４の係合部３４ｂに、他の電機子コアの係合部３４ｃ
を嵌め込み、複数の電機子コア３４を電機子取付板３２
の下面に、電機子コア３４の長手方向と永久磁石列の長
手方向（リニアモータ３１のストローク方向）が直角と
なるよう、順次隣り合わせに並べながら溶接によって固
定している。このような構成において、リニアモータ３
１の電機子巻線３５に図示しない電源により交流を通電
すると、この電機子巻線３５と永久磁石３７ａ、３７
ｂ、３７ｃ…との電磁作用により、積層された電機子コ
ア３４を貫通するように界磁が発生し、リニアモータ３
１の移動子は電機子コア３４の長手方向と直角なストロ
ーク方向に直線移動する。2. Description of the Related Art Conventionally, a permanent magnet synchronous machine type linear motor used for table feeding of a machine tool or the like is configured as shown in FIG. In the figure, reference numeral 31 denotes a linear motor, which is an armature mounting plate 32 as a moving element, an armature 33 mounted on the armature mounting plate 32, and faces the armature 33 via a magnetic gap and is not shown. A field yoke 36 fixed to a gantry, and permanent magnets 37 arranged at equal pitches adjacent to the field yoke 36 alternately with different polarities.
a, 37b, 37c... Armature 3
3 is provided with a winding accommodating groove 34a and concave and convex engaging portions 34b, 34c on both side surfaces of an electromagnetic steel sheet punched into a substantially I-shape;
And an armature core 34 formed by laminating magnetic steel sheets, and armature windings 35 of U, V, and W phases are aligned and housed in the winding accommodating grooves 34a of the armature core 34, and one armature is provided. Make up the block. Then, the engaging portion 34b of one armature core 34 is connected to the engaging portion 34c of another armature core.
Into the armature mounting plate 32
Are fixed by welding while being arranged side by side so that the longitudinal direction of the armature core 34 and the longitudinal direction of the row of permanent magnets (stroke direction of the linear motor 31) are perpendicular to each other. In such a configuration, the linear motor 3
When an alternating current is supplied to the first armature winding 35 from a power source (not shown), the armature winding 35 and the permanent magnets 37a, 37
b, 37c..., generate a magnetic field so as to penetrate the laminated armature core 34,
One mover moves linearly in a stroke direction perpendicular to the longitudinal direction of the armature core 34.
【０００３】[0003]
【発明が解決しようとする課題】ところが、このような
従来のいわゆる磁束貫通形のリニアモータは、電機子取
付板と電機子コアの結合に溶接が用いられているため、
溶接時に熱変形が生じ、その結果、機械寸法の歪みや、
磁気歪みの影響によりコギング推力が増大して、モータ
特性が悪くなるという問題があった。そこで、本発明
は、製造時に電機子取付板が熱変形することなく、コギ
ング推力の発生を抑えることができるリニアモータを提
供することを目的とする。However, in such a conventional so-called magnetic flux penetrating linear motor, welding is used to join the armature mounting plate and the armature core.
Thermal deformation occurs during welding, resulting in distortion of machine dimensions,
There is a problem that the cogging thrust increases due to the influence of the magnetostriction and the motor characteristics deteriorate. Therefore, an object of the present invention is to provide a linear motor capable of suppressing generation of cogging thrust without causing thermal deformation of an armature mounting plate during manufacturing.
【０００４】[0004]
【課題を解決するための手段】上記問題を解決するた
め、請求項１記載の本発明は、交互に極性が異なる複数
の界磁用の永久磁石を隣り合わせに並べて固定子を構成
する界磁ヨークと、前記永久磁石列と直角方向に磁気的
空隙を介して対向すると共に、略長方形状に打ち抜いた
電磁鋼板の両側面に形成してなる巻線収納溝と凹凸状の
係合部を有し、かつこの電磁鋼板を積層した電機子コア
と、前記電機子コアの巻線収納溝に整列巻きして収納し
た電機子巻線と、前記電機子巻線を巻装した複数の電機
子コアの係合部を係合して構成する電機子と、前記電機
子の上面に固定された移動子を構成する電機子取付板と
を備え、前記電機子を前記永久磁石列の長手方向に向か
って走行するようにしたリニアモータにおいて、前記電
機子コアは、略Ｔ字形と略Ｉ字形の形状からなるそれぞ
れ大小異なる第１電機子コアおよび第２電機子コアから
構成してあり、前記第１電機子コアは、前記電機子取付
板との対向面側に形成されたアリ溝と、前記アリ溝に挿
入され、かつタップ孔を内部に有する結合部材とが設け
てあり、前記電機子取付板は、前記結合部材に設けたタ
ップ孔と対向するように同一径に形成してなる孔部が設
けてあり、前記結合部材のタップ孔と前記電機子取付板
の孔部をボルトネジにより締め付け固定し、前記電機子
巻線および前記電機子コアの全体を覆うようにモールド
樹脂により固着したものである。また、請求項２記載の
本発明は、請求項１に記載のリニアモータにおいて、前
記アリ溝に挿入された結合部材と前記電機子取付板とを
一体化したものである。また、請求項３記載の本発明
は、請求項１または２に記載のリニアモータにおいて、
前記電機子取付板の内部に、前記電機子から発生した熱
を熱交換するように冷媒を流す冷媒通路を設けたもので
ある。上記手段により、電機子取付板と電機子間の固定
に溶接を用いることなく、両部材間を、電機子コアに設
けたアリ溝に挿入した結合部材を介してボルトネジによ
り締め付け固定し、かつ電機子全体をモールド樹脂によ
り固着したので、従来に比べて強固に接合し固定するこ
とができ、電機子取付板の変形を防止することができ
る。その結果、機械寸法の歪みや、磁気歪みの影響によ
るコギング推力の発生を抑えることができ、モータ特性
への悪影響を低減できる。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention according to the first aspect of the present invention is directed to a field yoke which constitutes a stator by arranging a plurality of field permanent magnets having different polarities alternately side by side. And a winding accommodating groove and a concave-convex engaging portion formed on both sides of a magnetic steel sheet punched out in a substantially rectangular shape while facing the permanent magnet row at right angles via a magnetic gap. And an armature core formed by laminating the electromagnetic steel sheets, an armature winding lined and housed in a winding accommodating groove of the armature core, and a plurality of armature cores wound with the armature winding. An armature configured by engaging an engaging portion, and an armature mounting plate that forms a mover fixed to the upper surface of the armature, wherein the armature is moved in a longitudinal direction of the permanent magnet row. In the linear motor adapted to run, the armature core is substantially T-shaped. And a first armature core and a second armature core having a substantially I-shape and differing in size from each other. The first armature core is formed on the surface facing the armature mounting plate. A dovetail groove and a coupling member inserted into the dovetail groove and having a tap hole therein are provided, and the armature mounting plate is formed to have the same diameter so as to face the tap hole provided in the coupling member. The tapping hole of the coupling member and the hole of the armature mounting plate are tightened and fixed with bolt screws, and molded resin is formed so as to cover the entire armature winding and the armature core. Is fixed by the According to a second aspect of the present invention, in the linear motor according to the first aspect, the coupling member inserted into the dovetail groove and the armature mounting plate are integrated. According to a third aspect of the present invention, in the linear motor according to the first or second aspect,
A refrigerant passage is provided inside the armature mounting plate, through which a refrigerant flows so as to exchange heat generated from the armature. By means of the above, without using welding for fixing between the armature mounting plate and the armature, the two members are fastened and fixed by bolt screws via a coupling member inserted into a dovetail groove provided in the armature core, and Since the entire armature is fixed by the mold resin, the armature can be joined and fixed more firmly than before, and the armature mounting plate can be prevented from being deformed. As a result, it is possible to suppress the occurrence of cogging thrust due to the influence of the mechanical dimension distortion and the magnetic distortion, and it is possible to reduce the adverse effect on the motor characteristics.
【０００５】[0005]
【発明の実施の形態】以下、本発明の実施例を図に基づ
いて説明する。図１は、本発明の実施例を示すリニアモ
ータの側断面図である。図２は、図１におけるリニアモ
ータの電機子取付板を取り除いた状態を示す斜視図であ
る。なお、９個の電機子コアブロックに対して、８個の
界磁磁極が対向するリニアモータの例を用いて説明す
る。図１において、１はリニアモータで、２は移動子を
構成する電機子取付板、３は電機子取付板２に取付けら
れた電機子、６は電機子３に磁気的空隙を介して対向し
図示しない架台に固定された界磁ヨーク、７ａ、７ｂ、
７ｃ…は界磁ヨーク６に交互に極性が異なるように等ピ
ッチで並べて配置した永久磁石であり、従来と同じ基本
構成を示している。本発明が従来と異なる特徴は、以下
のとおりである。電機子３において、４１は略Ｔ字形状
をした第１電機子コア、４２は略Ｉ字形状をした第２電
機子コアであって、大小異なる２種類のそれぞれのコア
両側面には電機子巻線５を巻装する巻線収納溝４ａと凹
凸状の係合部４ｂ、４ｃを有するとともに、第１電機子
コア４１を５個、第２電機子コア４２を４個交互に並べ
て結合している。４ｄは第１電機子コア４１の電機子取
付板２との対向面側に形成したアリ溝、１２はアリ溝４
ｄに紙面に対して垂直方向から挿入した結合部材であ
り、この結合部材１２の内部に雌ねじを有するタップ孔
１２ａを形成している。また、電機子取付板２におい
て、２ａは結合部材１２に設けたタップ孔１２ａと対向
するように同一径に形成した孔部であって、電機子取付
板２の上面側から沈み孔加工を施して背面側に貫通させ
ている。この電機子取付板２の孔部２ａからボルトネジ
１１を挿入し、結合部材１２のタップ孔１２ａに向かっ
てねじ込んだ後、電機子コアを剛に固定している。８は
モールド樹脂であり、図２にも示すように電機子巻線５
および各電機子コア４１、４２全体を覆うように固着
し、外部との絶縁も兼用している。また、９は電機子取
付板２内部に設けた冷媒通路である。この冷媒通路９内
に冷媒が充填してある。図３にリニアモータの冷媒通路
を有する電機子取付板２の斜視図を示している。９ａ、
９ｂは電機子取付板２の側面に設けた冷媒注入口および
冷媒排出口で、冷媒注入口９ａから注入した冷媒を電機
子取付板２内部に設けた冷媒通路９およびバイパスパイ
プ１０を流通して冷媒排出口９ｂより外部に排出させ、
電機子３より発生した熱を熱交換するようにしている。
次に、このような構成のリニアモータの動作について説
明する。前記電機子巻線５に通電すると、この電機子巻
線５と永久磁石７ａ、７ｂ、７ｃ…との電磁作用によ
り、各電機子コア４１、４２を貫通する界磁が発生して
電機子３を直線方向に移動させる。この際電機子３は、
電機子取付板２と各電機子コア４１、４２の高剛性構造
により、機械寸法の歪みや磁気歪み等を生じることはな
く、永久磁石との間で一定のギャップを維持した状態
で、一定の速度で移動する。また、電機子３を電機子巻
線５と永久磁石７ａ…との電磁作用により直線方向に移
動させると、電機子巻線５に流れる電流により電機子巻
線５に損失熱（銅損）が発生し、電機子コアの温度が上
昇する。このとき、電機子取付板２の側面に設けた冷媒
注入口９ａより注入した冷媒が電機子取付板２内部に設
けた冷媒通路９内を流通すると共に、冷媒が冷媒排出口
９ｂより外部に排出しながら、各電機子コア４１、４２
を介して電機子取付板２に伝導した熱を熱交換し除去す
る。したがって、電機子巻線からの発熱によって、電機
子取付板が熱変形を生じない。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side sectional view of a linear motor showing an embodiment of the present invention. FIG. 2 is a perspective view showing a state where an armature mounting plate of the linear motor in FIG. 1 is removed. A description will be given using an example of a linear motor in which eight field poles face nine armature core blocks. In FIG. 1, reference numeral 1 denotes a linear motor, 2 denotes an armature mounting plate constituting a moving element, 3 denotes an armature mounted on the armature mounting plate 2, and 6 faces the armature 3 via a magnetic gap. Field yokes 7a, 7b fixed to a frame (not shown)
.. Are permanent magnets arranged at equal pitches on the field yoke 6 alternately so as to have different polarities, and show the same basic configuration as the conventional one. The features of the present invention different from those of the related art are as follows. In the armature 3, reference numeral 41 denotes a first armature core having a substantially T-shape, and reference numeral 42 denotes a second armature core having a substantially I-shape. It has a winding accommodating groove 4a for winding the winding 5 and engaging portions 4b and 4c having irregularities. Five first armature cores 41 and four second armature cores 42 are alternately arranged and connected. ing. 4d is a dovetail groove formed on the side of the first armature core 41 facing the armature mounting plate 2, and 12 is a dovetail groove 4.
d is a connecting member inserted from a direction perpendicular to the paper surface, and a tap hole 12 a having a female screw is formed inside the connecting member 12. In the armature mounting plate 2, reference numeral 2 a denotes a hole portion formed to have the same diameter so as to face the tap hole 12 a provided in the coupling member 12, and is provided with a sink hole from the upper surface side of the armature mounting plate 2. Through the rear side. A bolt screw 11 is inserted through the hole 2a of the armature mounting plate 2 and screwed toward the tap hole 12a of the coupling member 12, and the armature core is rigidly fixed. Numeral 8 denotes a molding resin, and as shown in FIG.
Further, the armature cores 41 and 42 are fixed so as to cover the whole thereof, and also serve as insulation from the outside. Reference numeral 9 denotes a refrigerant passage provided inside the armature mounting plate 2. The refrigerant is filled in the refrigerant passage 9. FIG. 3 shows a perspective view of the armature mounting plate 2 having the refrigerant passage of the linear motor. 9a,
Reference numeral 9b denotes a refrigerant inlet and a refrigerant outlet provided on the side surface of the armature mounting plate 2, and the refrigerant injected from the refrigerant inlet 9a flows through the refrigerant passage 9 and the bypass pipe 10 provided inside the armature mounting plate 2. Discharged to the outside through the refrigerant discharge port 9b,
The heat generated by the armature 3 is exchanged.
Next, the operation of the linear motor having such a configuration will be described. When the armature winding 5 is energized, a magnetic field penetrating the armature cores 41, 42 is generated by the electromagnetic action of the armature winding 5 and the permanent magnets 7a, 7b, 7c. Is moved in the linear direction. At this time, the armature 3
Due to the high rigidity structure of the armature mounting plate 2 and each of the armature cores 41 and 42, there is no occurrence of mechanical dimension distortion or magnetic distortion, and a constant gap is maintained between the armature mounting plate 2 and the permanent magnet. Move at speed. When the armature 3 is moved in a linear direction by the electromagnetic action of the armature winding 5 and the permanent magnets 7a, the heat flowing through the armature winding 5 causes heat loss (copper loss) to the armature winding 5. Occurs and the temperature of the armature core rises. At this time, the refrigerant injected from the refrigerant inlet 9a provided on the side surface of the armature mounting plate 2 flows through the refrigerant passage 9 provided inside the armature mounting plate 2, and the refrigerant is discharged to the outside through the refrigerant outlet 9b. Meanwhile, each armature core 41, 42
The heat conducted to the armature mounting plate 2 through the heat exchange is removed by heat exchange. Therefore, heat generation from the armature winding does not cause thermal deformation of the armature mounting plate.
【０００６】次に本発明の第２の実施例を説明する。図
４は、本発明の第２の実施例を示すリニアモータの側断
面図である。第２実施例では、第１実施例における第１
電機子コアのアリ溝内に挿入された結合部材と電機子取
付板とを一体化している。すなわち、図４に示すよう
に、電機子取付板２のアリ溝４ｄとの対向部分に、結合
部材（図示せず）を電機子取付板２に一体化する構成に
より、アリ溝４ｄの部分のみで電機子取付板２と電機子
３を強固に固定するようにしている。このような構成に
することにより、部品点数を削減できるとともに、電機
子取付板２の上面にワーク、工具などを固定する別の用
途として充分活用できる。また、動作については第１の
実施例と同じなので省略する。なお、図４では説明を簡
単にするためにタップ孔および孔部を省略している。し
たがって、本発明の各実施例は、大きさが異なる一方の
電機子コアの電機子取付板との対向面側に形成されたア
リ溝に結合部材を挿入し、電機子コアのアリ溝に挿入し
た結合部材のタップ孔と電機子取付板内の孔部をボルト
ネジにより締め付け固定すると共に、電機子全体をモー
ルド樹脂により固着したので、電機子取付板と電機子コ
アを強固に固定でき、電機子取付板の変形を防止するこ
とができる。また、電機子取付板の内部に冷媒通路を設
け、冷媒通路内に冷媒を流通させることで、電機子巻線
より発生した熱を冷媒により熱交換するので、電機子取
付板の温度はほとんど上昇することなく、電機子取付板
の熱変形を防止することができる。なお、本発明の第２
の実施例においても、第１実施例と同様に電機子取付板
内部に、電機子巻線から発生した熱を熱交換するように
冷媒を流す冷媒通路を設けるようにしても構わない。ま
た、本発明の第１および第２実施例において、電機子取
付板の孔部並びに電機子コアのアリ溝内に設けたタップ
孔の数と位置は、電機子コアの幅に応じて適宜選択すれ
ば良い。このようなリニアモータを工作機械のユーザ等
に提供する際、電機子取付板や電機子コアにおいて、任
意の位置にあるいは任意の数のタップ孔をユーザ側の用
途に応じて取り付けることが可能で、上記実施例に限定
されるものではない。Next, a second embodiment of the present invention will be described. FIG. 4 is a side sectional view of a linear motor according to a second embodiment of the present invention. In the second embodiment, the first embodiment
The coupling member inserted into the dovetail groove of the armature core and the armature mounting plate are integrated. That is, as shown in FIG. 4, a coupling member (not shown) is integrated with the armature mounting plate 2 at a portion of the armature mounting plate 2 facing the dovetail groove 4 d, so that only the portion of the dovetail groove 4 d is provided. The armature mounting plate 2 and the armature 3 are firmly fixed. With such a configuration, the number of components can be reduced, and it can be sufficiently utilized as another application for fixing a work, a tool, or the like on the upper surface of the armature mounting plate 2. Further, the operation is the same as that of the first embodiment, so that the description is omitted. In FIG. 4, tap holes and holes are omitted for simplicity of description. Therefore, in each embodiment of the present invention, the coupling member is inserted into the dovetail groove formed on the side of the one armature core having a different size facing the armature mounting plate, and inserted into the dovetail groove of the armature core. The armature mounting plate and armature core can be firmly fixed because the tapped hole of the coupling member and the hole in the armature mounting plate are tightened and fixed with bolt screws, and the entire armature is fixed with mold resin. Deformation of the mounting plate can be prevented. In addition, by providing a refrigerant passage inside the armature mounting plate and allowing the refrigerant to flow through the refrigerant passage, the heat generated from the armature winding is exchanged by the refrigerant, so that the temperature of the armature mounting plate almost rises. Without doing so, thermal deformation of the armature mounting plate can be prevented. The second embodiment of the present invention
In this embodiment, similarly to the first embodiment, a refrigerant passage for flowing a refrigerant may be provided inside the armature mounting plate so as to exchange heat generated from the armature winding. In the first and second embodiments of the present invention, the number and positions of the holes of the armature mounting plate and the tap holes provided in the dovetail groove of the armature core are appropriately selected according to the width of the armature core. Just do it. When such a linear motor is provided to a user of a machine tool or the like, it is possible to attach an arbitrary number of tap holes or an arbitrary number of tap holes in an armature mounting plate or an armature core according to a user's application. However, the present invention is not limited to the above embodiment.
【０００７】[0007]
【発明の効果】以上述べたように、本発明によれば、次
のような効果がある。 （１）大小異なる２種類の電機子ブロックを交互に配列
した構成において、電機子取付板と電機子コアの両部材
間を、電機子コアに設けたアリ溝に挿入した結合部材を
介してボルトネジにより締め付け固定し、かつ電機子全
体をモールド樹脂により剛に固着することで、従来のよ
うに電機子コアと電機子取付板の固定に溶接を用いるこ
となく、電機子取付板の変形を防止することができる。 （２）電機子取付板の内部に冷媒通路を設け、冷媒通路
内に冷媒を流通させることにより、電機子巻線から発生
した熱を電機子取付板内において熱交換することができ
るため、電機子取付板の温度上昇を抑えて、電機子取付
板の熱変形を防止することができる。 （３）上記（１）、（２）により、機械寸法の歪みや、
磁気歪みの影響によるコギング推力の発生を抑えること
ができ、モータ特性への悪影響を低減することができ
る。As described above, according to the present invention, the following effects can be obtained. (1) In a configuration in which two types of armature blocks having different sizes are alternately arranged, a bolt screw is inserted between both members of the armature mounting plate and the armature core via a coupling member inserted into a dovetail groove provided in the armature core. And the armature as a whole is rigidly fixed with mold resin to prevent deformation of the armature mounting plate without using welding to fix the armature core and the armature mounting plate as in the past. be able to. (2) By providing a refrigerant passage inside the armature mounting plate and allowing the refrigerant to flow through the refrigerant passage, heat generated from the armature winding can be exchanged within the armature mounting plate. The temperature rise of the armature mounting plate can be suppressed, and thermal deformation of the armature mounting plate can be prevented. (3) According to the above (1) and (2), distortion of machine dimensions and
The occurrence of cogging thrust due to the influence of magnetostriction can be suppressed, and adverse effects on motor characteristics can be reduced.
【図１】本発明の第１の実施例を示すリニアモータの側
断面図である。FIG. 1 is a side sectional view of a linear motor according to a first embodiment of the present invention.
【図２】図１におけるリニアモータの電機子取付板を取
り除いた状態を示す斜視図である。FIG. 2 is a perspective view showing a state where an armature mounting plate of the linear motor in FIG. 1 is removed.
【図３】図１におけるリニアモータの冷媒通路を有する
電機子取付板の斜視図である。FIG. 3 is a perspective view of an armature mounting plate having a refrigerant passage of the linear motor in FIG. 1;
【図４】本発明の第２の実施例を示すリニアモータの側
断面図である。FIG. 4 is a side sectional view of a linear motor showing a second embodiment of the present invention.
【図５】従来のリニアモータの側断面図である。FIG. 5 is a side sectional view of a conventional linear motor.
１：リニアモータ ２：電機子取付板（移動子） ２ａ：孔部 ３：電機子 ４１：第１電機子コア ４２：第２電機子コア ４ａ：巻線収納溝 ４ｂ：係合部 ４ｃ：係合部 ４ｄ：アリ溝 ５：電機子巻線 ６：界磁ヨーク（固定子） ７ａ、７ｂ、７ｃ：永久磁石 ８：モールド樹脂 ９：冷媒通路 ９ａ：冷媒注入口 ９ｂ：冷媒排出口 １０：バイパスパイプ １１：ボルトネジ １２：結合部材 １２ａ：タップ孔 1: linear motor 2: armature mounting plate (moving element) 2a: hole 3: armature 41: first armature core 42: second armature core 4a: winding accommodating groove 4b: engagement portion 4c: engagement Joint 4d: Dovetail groove 5: Armature winding 6: Field yoke (stator) 7a, 7b, 7c: Permanent magnet 8: Mold resin 9: Refrigerant passage 9a: Refrigerant inlet 9b: Refrigerant outlet 10: Bypass Pipe 11: Bolt screw 12: Coupling member 12a: Tapped hole
Claims (3)
石を隣り合わせに並べて固定子を構成する界磁ヨーク
と、前記永久磁石列と直角方向に磁気的空隙を介して対
向すると共に、略長方形状に打ち抜いた電磁鋼板の両側
面に形成してなる巻線収納溝と凹凸状の係合部を有し、
かつこの電磁鋼板を積層した電機子コアと、前記電機子
コアの巻線収納溝に整列巻きして収納した電機子巻線
と、前記電機子巻線を巻装した複数の電機子コアの係合
部を係合して構成する電機子と、前記電機子の上面に固
定された移動子を構成する電機子取付板とを備え、前記
電機子を前記永久磁石列の長手方向に向かって走行する
ようにしたリニアモータにおいて、 前記電機子コアは、略Ｔ字形と略Ｉ字形の形状からなる
それぞれ大小異なる第１電機子コアおよび第２電機子コ
アから構成してあり、 前記第１電機子コアは、前記電機子取付板との対向面側
に形成されたアリ溝と、前記アリ溝に挿入され、かつタ
ップ孔を内部に有する結合部材とが設けてあり、 前記
電機子取付板は、前記結合部材に設けたタップ孔と対向
するように同一径に形成してなる孔部が設けてあり、 前記結合部材のタップ孔と前記電機子取付板の孔部をボ
ルトネジにより締め付け固定し、前記電機子巻線および
前記電機子コアの全体を覆うようにモールド樹脂により
固着してあることを特徴とするリニアモータ。1. A field yoke constituting a stator by arranging a plurality of field permanent magnets having different polarities alternately adjacent to each other, and facing a permanent magnet row at right angles to the row of magnetic fields via a magnetic gap. It has a winding receiving groove formed on both sides of an electromagnetic steel plate punched into a substantially rectangular shape and an uneven engaging portion,
And an armature core formed by laminating the electromagnetic steel sheets, an armature winding aligned and housed in a winding accommodating groove of the armature core, and a plurality of armature cores wound with the armature winding. An armature formed by engaging the joint portion, and an armature mounting plate forming a mover fixed to the upper surface of the armature, the armature traveling in the longitudinal direction of the permanent magnet row. In the linear motor, the armature core includes a first armature core and a second armature core, each having a substantially T-shape and a substantially I-shape, and each having a different size. The core is provided with a dovetail groove formed on the side facing the armature mounting plate, and a coupling member inserted into the dovetail groove and having a tap hole therein. Same diameter so as to face the tap hole provided in the coupling member A hole formed is provided, and a tap hole of the coupling member and a hole of the armature mounting plate are tightened and fixed with bolt screws, and molded so as to cover the entire armature winding and the armature core. A linear motor fixed by resin.
機子取付板とを一体化したことを特徴とする請求項１に
記載のリニアモータ。2. The linear motor according to claim 1, wherein the coupling member inserted into the dovetail groove and the armature mounting plate are integrated.
ら発生した熱を熱交換するように冷媒を流す冷媒通路を
設けたことを特徴とする請求項１または２に記載のリニ
アモータ。3. The linear motor according to claim 1, wherein a refrigerant passage for flowing a refrigerant so as to exchange heat generated from the armature is provided inside the armature mounting plate. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01543299A JP4277337B2 (en) | 1999-01-25 | 1999-01-25 | Linear motor and table feeder using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01543299A JP4277337B2 (en) | 1999-01-25 | 1999-01-25 | Linear motor and table feeder using the same |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2000217334A true JP2000217334A (en) | 2000-08-04 |
| JP2000217334A5 JP2000217334A5 (en) | 2006-01-12 |
| JP4277337B2 JP4277337B2 (en) | 2009-06-10 |
Family
ID=11888642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01543299A Expired - Fee Related JP4277337B2 (en) | 1999-01-25 | 1999-01-25 | Linear motor and table feeder using the same |
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| Country | Link |
|---|---|
| JP (1) | JP4277337B2 (en) |
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