CN101741213A - Cylindrical permanent magnet linear motor - Google Patents
Cylindrical permanent magnet linear motor Download PDFInfo
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- CN101741213A CN101741213A CN 201010110732 CN201010110732A CN101741213A CN 101741213 A CN101741213 A CN 101741213A CN 201010110732 CN201010110732 CN 201010110732 CN 201010110732 A CN201010110732 A CN 201010110732A CN 101741213 A CN101741213 A CN 101741213A
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- axial charging
- linear motor
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Abstract
The invention discloses a cylindrical permanent magnet linear motor, which relates to a linear motor. The cylindrical permanent magnet linear motor aims to solve the problems that the existing cylindrical permanent magnet linear motor has low air gap magnetic density and low thrust density. A plurality of annular axial magnetized permanent magnets are divided into a plurality of groups in pair, an annular magnetic conducting stator core is arranged between the two annular axial magnetized permanent magnets in each group, an annular radial magnetized permanent magnet is embedded on the inside diameter surface of the annular magnetic conducting stator core along the center of the thickness direction, and the magnetized directions of the adjacent two annular radial magnetized permanent magnets are opposite; and the two annular axial magnetized permanent magnets in the same group are magnetized in parallel, and the annular radial magnetized permanent magnets and the two annular axial magnetized permanent magnets in the same group are magnetized in series. The cylindrical permanent magnet linear motor has the advantages of high air gap magnetic density and high thrust density, and can be widely applied to various places which need to provide high-precision linear motion.
Description
Technical field
The present invention relates to a kind of linear electric motors, be specifically related to a kind of permanent-magnetism linear motor.
Background technology
Cylindrical permanent-magnet linear motor has advantages such as winding utilization height, no lateral ends winding, no unilateral magnetic force, and the cylindrical permanent-magnet linear motor of slotless configuration, no slot effect, force oscillation is little, overload capacity is strong, has therefore embodied tangible technical advantage in high-precision rectilinear motion applications.Existing cylindrical permanent-magnet linear motor, the general axial charging permanent magnet structure cylindrical permanent-magnet linear motor that adopts as shown in Figure 1, there is the low shortcoming of air gap flux density in this structure, has limited the raising of motor pushing force density.
Summary of the invention
The problem that leakage field is big, pushing force density is low that the present invention exists for the cylindrical permanent-magnet linear motor that solves existing axial charging permanent magnet structure, and the cylindrical permanent-magnet linear motor that proposes.
Cylindrical permanent-magnet linear motor, it comprises mover assembly and motor shaft, described mover assembly is made up of cylindrical shape mover iron core and armature winding; Armature winding is installed on the inner surface of cylindrical shape mover iron core; It also comprises stator module, and described stator module is installed on the motor shaft; Stator module is made up of a plurality of ring axial charging permanent magnets, a plurality of annular radial magnetizing permanent magnetism body, a plurality of annular magnetic conducting stator core and a plurality of conducting magnet core ring; Is that one group mode is divided into many groups with described a plurality of ring axial charging permanent magnets according to per two ring axial charging permanent magnets, be provided with an annular magnetic conducting stator core between every group of two ring axial charging permanent magnets, annular radial magnetizing permanent magnetism body is inlaid in the annular magnetic conducting stator core along on the aperture surface of thickness direction center, and described every group of two ring axial charging permanent magnets and the annular magnetic conducting stator core that is equiped with annular radial magnetizing permanent magnetism body constitute a magnetic pole of the stator; The magnetizing direction of adjacent two magnetic pole of the stator is identical; The magnetizing direction of two ring axial charging permanent magnets in same group is opposite, and the magnetizing direction of adjacent two annular radial magnetizing permanent magnetism bodies is opposite; Be provided with a conducting magnet core ring between described adjacent two magnetic pole of the stator, two ring axial charging permanent magnets in same group adopt shunt excitation, annular radial magnetizing permanent magnetism body and same group of two ring axial charging permanent magnet adopt series excitation, leave air gap between described mover assembly and the stator module.
It is little that the present invention has a leakage field, air gap flux density height, the advantage that the motor pushing force density is high.It adopts two ring axial charging permanent magnets 3 and an annular radial magnetizing permanent magnetism body 4 that an excitation field is provided, and by annular conducting magnet core 5, form the poly-magnetic magnetic circuit of comprehensive shunt excitation and series excitation, improve air gap flux density effectively, thereby improved the pushing force density of motor.
Description of drawings
Fig. 1 is the structural representation of existing slotless cylindrical permanent-magnet linear motor; Fig. 2 is the structure vertical profile schematic diagram of cylindrical permanent-magnet linear motor of the present invention; Fig. 3 is the A-A cutaway view of Fig. 2; Fig. 4 is the partial enlarged drawing of Fig. 2 B portion.
Embodiment
Embodiment one: in conjunction with Fig. 2, Fig. 3 and Fig. 4 present embodiment is described, present embodiment comprises mover assembly and motor shaft 7, and described mover assembly is made up of cylindrical shape mover iron core 1 and armature winding 2; Armature winding 2 is installed on the inner surface of cylindrical shape mover iron core 1; It also comprises stator module, and described stator module is installed on the motor shaft 7; Stator module is made up of a plurality of ring axial charging permanent magnets 3, a plurality of annular radial magnetizing permanent magnetism body 4, a plurality of annular magnetic conducting stator core 5 and a plurality of conducting magnet core ring 6; Is that one group mode is divided into many groups with described a plurality of ring axial charging permanent magnets 3 according to per two ring axial charging permanent magnets 3, be provided with an annular magnetic conducting stator core 5 between every group of two ring axial charging permanent magnets 3, annular radial magnetizing permanent magnetism body 4 is inlaid in annular magnetic conducting stator core 5 along on the aperture surface of thickness direction center, and described every group of two ring axial charging permanent magnets 3 and the annular magnetic conducting stator core 5 that is equiped with annular radial magnetizing permanent magnetism body 4 constitute a magnetic pole of the stator; The magnetizing direction of adjacent two magnetic pole of the stator is identical; The magnetizing direction of two ring axial charging permanent magnets 3 in same group is opposite, and the magnetizing direction of adjacent two annular radial magnetizing permanent magnetism bodies 4 is opposite; Be provided with a conducting magnet core ring 6 between described adjacent two magnetic pole of the stator, two ring axial charging permanent magnets 3 in same group adopt shunt excitation, annular radial magnetizing permanent magnetism body 4 adopts series excitation with same group of two ring axial charging permanent magnets 3, leaves air gap 8 between described mover assembly and the stator module.The aperture surface of annular radial magnetizing permanent magnetism body 4 and the outer diametric plane of motor shaft 7 closely cooperate, and both can replenish air-gap field, have the effect that suppresses axial leakage field again.The magnetic flux that same group two ring axial charging permanent magnets 3 and the annular radial magnetizing permanent magnetism body 4 of these group ring axial charging permanent magnet 3 place magnetic pole of the stator send, form the closed-loop path through annular magnetic conducting stator core 5, air gap 8, cylindrical shape mover iron core 1 and constitute a magnetic pole, and with armature winding 2 linkages.The operation principle of other magnetic poles is all identical with above-mentioned magnetic pole, and annular radial magnetizing permanent magnetism body 3, the annular magnetic conducting stator core 5 of two ring axial charging permanent magnets of another group 3 and this group place magnetic pole are formed another magnetic pole.Be provided with a conducting magnet core ring 6 between adjacent two magnetic pole of the stator, this conducting magnet core ring 6 has the adjustable magnetic effect.
Embodiment two: in conjunction with Fig. 2, Fig. 3 and Fig. 4 present embodiment is described, present embodiment and embodiment one difference are the thickness D2 of the thickness D1 of annular radial magnetizing permanent magnetism body 4 less than annular magnetic conducting stator core 5.Other composition is identical with embodiment one with connected mode.
In conjunction with Fig. 4 present embodiment is described, present embodiment and embodiment one or two differences are that the external diameter of the external diameter of the external diameter of described ring axial charging permanent magnet 3 and annular magnetic conducting stator core 5 and conducting magnet core ring 6 is all identical, and the internal diameter of the internal diameter of the internal diameter of described ring axial charging permanent magnet 3 and annular magnetic conducting stator core 5, the internal diameter of annular radial magnetizing permanent magnetism body 4 and conducting magnet core ring 6 is all identical.Other composition is identical with embodiment one or two with connected mode.
Claims (3)
1. cylindrical permanent-magnet linear motor, it comprises mover assembly and motor shaft (7), described mover assembly is made up of cylindrical shape mover iron core (1) and armature winding (2); Armature winding (2) is installed on the inner surface of cylindrical shape mover iron core (1); It is characterized in that it also comprises stator module, described stator module is installed on the motor shaft (7); Stator module is made up of a plurality of ring axial charging permanent magnets (3), a plurality of annular radial magnetizing permanent magnetism bodies (4), a plurality of annular magnetic conducting stator core (5) and a plurality of conducting magnet core ring (6);
Is that one group mode is divided into many groups with described a plurality of ring axial charging permanent magnets (3) according to per two ring axial charging permanent magnets (3),
Be provided with an annular magnetic conducting stator core (5) between every group two ring axial charging permanent magnets (3),
Annular radial magnetizing permanent magnetism body (4) is inlaid in annular magnetic conducting stator core (5) along on the aperture surface of thickness direction center,
Described two every group ring axial charging permanent magnets (3) and the annular magnetic conducting stator core (5) that is equiped with annular radial magnetizing permanent magnetism body (4) constitute a magnetic pole of the stator; The magnetizing direction of adjacent two magnetic pole of the stator is identical; The magnetizing direction of two ring axial charging permanent magnets (3) in same group is opposite, and the magnetizing direction of adjacent two annular radial magnetizing permanent magnetism bodies (4) is opposite; Be provided with a conducting magnet core ring (6) between described adjacent two magnetic pole of the stator, two ring axial charging permanent magnets (3) in same group adopt shunt excitation, annular radial magnetizing permanent magnetism body (4) adopts series excitation with same group two ring axial charging permanent magnets (3), leaves air gap (8) between described mover assembly and the stator module.
2. cylindrical permanent-magnet linear motor according to claim 1 is characterized in that the thickness D2 of the thickness D1 of annular radial magnetizing permanent magnetism body (4) less than annular magnetic conducting stator core (5).
3. cylindrical permanent-magnet linear motor according to claim 1, the external diameter that it is characterized in that described ring axial charging permanent magnet (3) is all identical with the external diameter of the external diameter of annular magnetic conducting stator core (5) and conducting magnet core ring (6), and the internal diameter of the internal diameter of described ring axial charging permanent magnet (3) and the internal diameter of annular magnetic conducting stator core (5), annular radial magnetizing permanent magnetism body (4) is all identical with the internal diameter of conducting magnet core ring (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101107328A CN101741213B (en) | 2010-02-21 | 2010-02-21 | Cylindrical permanent magnet linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101107328A CN101741213B (en) | 2010-02-21 | 2010-02-21 | Cylindrical permanent magnet linear motor |
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| Publication Number | Publication Date |
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| CN101741213A true CN101741213A (en) | 2010-06-16 |
| CN101741213B CN101741213B (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101107328A Active CN101741213B (en) | 2010-02-21 | 2010-02-21 | Cylindrical permanent magnet linear motor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969261A (en) * | 2010-10-22 | 2011-02-09 | 哈尔滨工业大学 | High-power density permanent magnet motor |
| CN104393737A (en) * | 2014-11-24 | 2015-03-04 | 北京航空航天大学 | Linear oscillation motor |
| CN105103422A (en) * | 2013-04-12 | 2015-11-25 | 三菱电机株式会社 | Movable element and linear motor |
| WO2022047940A1 (en) * | 2020-09-03 | 2022-03-10 | 瑞声声学科技(深圳)有限公司 | Linear motor |
| CN114244062A (en) * | 2021-12-21 | 2022-03-25 | 杭州电子科技大学 | Linear reciprocating pump based on ferromagnetic structure and linear reciprocating driving method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1866700A (en) * | 2006-06-23 | 2006-11-22 | 中国科学院电工研究所 | Cylindrical permanent magnetic system |
| CN1929269A (en) * | 2006-09-28 | 2007-03-14 | 哈尔滨工业大学 | Axially magnetizing circular column permanent-magnet linear motor |
| DE102005051235A1 (en) * | 2005-10-26 | 2008-03-13 | Festo Ag & Co. | Electro-dynamic linear motor, has magnet rings magnetized in radial, axial and reverse axial and radial manner, where length of axially magnetized rings is ten to ninety percentages lesser than length of radially magnetized rings |
| CN101527493A (en) * | 2009-04-27 | 2009-09-09 | 青岛同日电机有限公司 | Moving magnet-type cylindrical linear motor |
-
2010
- 2010-02-21 CN CN2010101107328A patent/CN101741213B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005051235A1 (en) * | 2005-10-26 | 2008-03-13 | Festo Ag & Co. | Electro-dynamic linear motor, has magnet rings magnetized in radial, axial and reverse axial and radial manner, where length of axially magnetized rings is ten to ninety percentages lesser than length of radially magnetized rings |
| CN1866700A (en) * | 2006-06-23 | 2006-11-22 | 中国科学院电工研究所 | Cylindrical permanent magnetic system |
| CN1929269A (en) * | 2006-09-28 | 2007-03-14 | 哈尔滨工业大学 | Axially magnetizing circular column permanent-magnet linear motor |
| CN101527493A (en) * | 2009-04-27 | 2009-09-09 | 青岛同日电机有限公司 | Moving magnet-type cylindrical linear motor |
Non-Patent Citations (1)
| Title |
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| 《微电机》 20070928 肖俏伟等 圆筒型永磁同步直线电动机气隙磁场分析 , 第09期 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969261A (en) * | 2010-10-22 | 2011-02-09 | 哈尔滨工业大学 | High-power density permanent magnet motor |
| CN101969261B (en) * | 2010-10-22 | 2012-06-27 | 哈尔滨工业大学 | High-power density permanent magnet motor |
| CN105103422A (en) * | 2013-04-12 | 2015-11-25 | 三菱电机株式会社 | Movable element and linear motor |
| CN104393737A (en) * | 2014-11-24 | 2015-03-04 | 北京航空航天大学 | Linear oscillation motor |
| CN104393737B (en) * | 2014-11-24 | 2018-08-10 | 北京航空航天大学 | Linear vibration motor |
| WO2022047940A1 (en) * | 2020-09-03 | 2022-03-10 | 瑞声声学科技(深圳)有限公司 | Linear motor |
| CN114244062A (en) * | 2021-12-21 | 2022-03-25 | 杭州电子科技大学 | Linear reciprocating pump based on ferromagnetic structure and linear reciprocating driving method thereof |
| CN114244062B (en) * | 2021-12-21 | 2022-12-30 | 杭州电子科技大学 | Linear reciprocating pump based on ferromagnetic structure and linear reciprocating driving method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101741213B (en) | 2012-05-23 |
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