JPS61157255A - Stepping motor - Google Patents
Stepping motorInfo
- Publication number
- JPS61157255A JPS61157255A JP28131484A JP28131484A JPS61157255A JP S61157255 A JPS61157255 A JP S61157255A JP 28131484 A JP28131484 A JP 28131484A JP 28131484 A JP28131484 A JP 28131484A JP S61157255 A JPS61157255 A JP S61157255A
- Authority
- JP
- Japan
- Prior art keywords
- stator
- rotor
- laminated structure
- copper plate
- secured
- 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
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
- H02K37/10—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type
- H02K37/12—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets
- H02K37/14—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets with magnets rotating within the armatures
- H02K37/18—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors of permanent magnet type with stationary armatures and rotating magnets with magnets rotating within the armatures of homopolar type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は階動電動機の固定子の構造に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to the structure of a stator for a stepwise motor.
従来、この種の階動電動機は回転子軸方向に２極に着磁
された永久磁石を軟磁性鉄でできた複数個の歯をもった
歯車状鉄心で円心円状に囲って回転子とし、固定子は鋼
板を積層構造にし、固定子の極の歯は回転子の歯とある
ピッチずつずれて、その極に巻線が巻かれている。Conventionally, in this type of linear motor, a permanent magnet magnetized with two poles in the direction of the rotor axis is surrounded by a gear-shaped iron core with multiple teeth made of soft magnetic iron. The stator has a laminated steel plate structure, and the stator pole teeth are offset from the rotor teeth by a certain pitch, and the windings are wound around the poles.
上述した従来の階動電動機は巻線の中に鋼板が入ってい
るので、巻線インダクタンスが大きくなり、低周波領域
で駆動するときは巻線インダクタンスの影響はあまりあ
られれないので、十分電流が流れトルクを発生すること
ができるが、高周波領域での駆動は励磁電流の確立がで
きずトルクも著しく低下するという欠点があった。The conventional linear motor mentioned above has a steel plate in the winding, so the winding inductance is large, and when driving in the low frequency range, the influence of the winding inductance is not so great, so the current is sufficient. Although it is possible to generate flow torque, driving in a high frequency range has the drawback that an exciting current cannot be established and the torque decreases significantly.
本発明は前記問題点を解消した装置を提供するものであ
る。The present invention provides an apparatus that solves the above problems.
本発明は外周に複数個の歯が付された回転子鉄心及び回
転子軸方向に２極に着磁された永久磁石からなる回転子
と、複数極からなり各極の歯が回転子の歯とあるピッチ
ずつずれ、各極に巻線が巻かれている固定子とを有し、
その固定子を鋼板と銅板との積層構造としたことを特徴
とする階動電動機である。The present invention consists of a rotor core having a plurality of teeth on its outer periphery, a rotor consisting of a permanent magnet magnetized into two poles in the rotor axis direction, and a rotor having a plurality of poles, each of which has teeth of the rotor. It has a stator with a winding wound around each pole, shifted by a certain pitch,
This is a linear motor characterized in that its stator has a laminated structure of steel plates and copper plates.
次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は本発明の階動電動機の固定子の断面拡大図、第
２図は階動電動機全体の縦断面図、第３図は第２図Ａ−
Ａ矢視図である。軸方向に着磁された円筒状の永久磁石
１はシャフト２に固定され、外周に複数個の歯がつげら
れた円筒状の鉄心３が永久磁石１と同心円上に固定され
て回転子４を形成している。シャフト２０両端はベアリ
ング５で支持されている。第１図に示すように鋼板６と
銅板７との積層構造にて固定子８を形成し、固定子８の
内周には複数からなる極９があり、各極９には回転子４
の歯とあるピッチずつずれた歯９ａを有する。固定子８
はカバー１０で両面から固定されている。また各極９に
は巻線１１が巻かれている。鋼板６と銅板７の枚数の比
率は１：１でなくてよい。また厚さは同じでなくてよい
。Fig. 1 is an enlarged cross-sectional view of the stator of the stator motor of the present invention, Fig. 2 is a longitudinal sectional view of the entire stator motor, and Fig. 3 is Fig. 2A-
It is a view from arrow A. A cylindrical permanent magnet 1 magnetized in the axial direction is fixed to a shaft 2, and a cylindrical iron core 3 having a plurality of teeth on its outer periphery is fixed concentrically with the permanent magnet 1 to drive a rotor 4. is forming. Both ends of the shaft 20 are supported by bearings 5. As shown in FIG. 1, a stator 8 is formed of a laminated structure of a steel plate 6 and a copper plate 7, and a plurality of poles 9 are provided on the inner periphery of the stator 8, and each pole 9 has a rotor 4.
The tooth 9a is shifted by a certain pitch from the tooth 9a. Stator 8
is fixed from both sides with a cover 10. Further, a winding 11 is wound around each pole 9. The ratio of the number of steel plates 6 and copper plates 7 does not have to be 1:1. Also, the thickness does not have to be the same.
実施例において、階動電動機の固定子を鋼板と銅板の積
層構造にすることにより、巻線に励磁電流が流れると固
定子の極の中を通る磁束に変化が生じ、この変化を打ち
消そうと銅板の中に渦電流が流れる。この渦電流が流れ
るだめのエネルギーは励磁電流側から供給されるので、
励磁電流の立」二りは鋼板のみの固定子の場合よりも速
くなる。In the example, by making the stator of a linear motor a laminated structure of steel plates and copper plates, when an exciting current flows through the windings, a change occurs in the magnetic flux passing through the poles of the stator, and this change is canceled out. An eddy current flows inside the copper plate. The energy through which this eddy current flows is supplied from the exciting current side, so
The excitation current rises faster than with a stator made of only steel plates.
本発明は以上説明したように、固定子を鋼板と銅板との
積層構造にすることにより、励磁電流の立上りを速くで
きる効果がある。As explained above, the present invention has the effect of making the rise of the excitation current faster by forming the stator into a laminated structure of steel plates and copper plates.
第１図は本発明の階動電動機固定子の断面拡大図、第２
図は本発明階動電動機の縦断面図、第３図は第２図のＡ
−Ａ’矢視図である。
１・・・永久磁石、２・・・シャフト、３・・・鉄心、
４・・・回転子、５・・・ベアリング、６・・・鋼板、
７・・・銅板、８・・・固定子、９・・・極、１０・・
・カバー、１１・・・巻線。FIG. 1 is an enlarged cross-sectional view of the stator of the stator motor of the present invention, and FIG.
The figure is a vertical cross-sectional view of the floor motor of the present invention, and Figure 3 is A of Figure 2.
-A' arrow view. 1... Permanent magnet, 2... Shaft, 3... Iron core,
4... Rotor, 5... Bearing, 6... Steel plate,
7...Copper plate, 8...Stator, 9...Pole, 10...
・Cover, 11... Winding wire.
Claims (1)
子軸方向に着磁された永久磁石からなる回転子と、複数
極からなり各極の歯が回転子の歯とあるピッチずつずれ
、各極に巻線が巻かれている固定子とを備えた階動電動
機において、鋼板と銅板との積層構造とした固定子を有
することを特徴とする階動電動機。(1) A rotor consisting of a rotor core with multiple teeth attached to the outer periphery and a permanent magnet magnetized in the rotor axial direction, and a rotor consisting of multiple poles, with the teeth of each pole at a pitch that is the same as the teeth of the rotor. What is claimed is: 1. A linear motor having a stator having a stator having a stator having a stator having a stator having a laminated structure of steel plates and copper plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28131484A JPS61157255A (en) | 1984-12-27 | 1984-12-27 | Stepping motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28131484A JPS61157255A (en) | 1984-12-27 | 1984-12-27 | Stepping motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61157255A true JPS61157255A (en) | 1986-07-16 |
Family
ID=17637364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28131484A Pending JPS61157255A (en) | 1984-12-27 | 1984-12-27 | Stepping motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61157255A (en) |
-
1984
- 1984-12-27 JP JP28131484A patent/JPS61157255A/en active Pending
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