CN104993734A - Moving-magnetic type magneto micro-displacement drive - Google Patents
Moving-magnetic type magneto micro-displacement drive Download PDFInfo
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- CN104993734A CN104993734A CN201510351682.5A CN201510351682A CN104993734A CN 104993734 A CN104993734 A CN 104993734A CN 201510351682 A CN201510351682 A CN 201510351682A CN 104993734 A CN104993734 A CN 104993734A
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- magnetostrictive material
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- permanent magnet
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- conducting magnet
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Abstract
The invention relates to a moving-magnetic type magneto micro-displacement drive. The moving-magnetic type magneto micro-displacement drive comprises an outer magnetic conductive iron core, an inner magnetic conductive iron core, a permanent magnet, a magnetostrictive material, a compression bolt, a Belleville spring and an output shaft; the outer magnetic conductive iron core and the inner magnetic conductive iron core are relatively disposed; the permanent magnet is disposed between the outer magnetic conductive iron core and the inner magnetic conductive iron core; the magnetostrictive material is located in the inner magnetic conductive iron core; the compression bolt is screwed to the inner magnetic conductive iron core; the Belleville spring abuts against between the compression bolt and the outer shaft; and the output shaft abuts against one side of the magnetostrictive material and is driven by the magnetostrictive material. The permanent magnet is used to provide a drive magnetic field for the magnetostrictive material, and the drive magnetic field in the magnetostrictive material is changed through a change of a position of the permanent magnet, so a stretching and shrinkng length of the magnetostrictive material is changed, micron-size control can be achieved, and the moving-magnetic type magneto micro-displacement drive is suitable for high-precision positioning requirement.
Description
[technical field]
The present invention relates to a kind of displacement driver, be specifically related to a kind of moving-magnetic type mangneto micro-displacement driver, electric rotating machine or linear electric motors can drive macroscopical converts displacement of permanent magnet to become magnetostrictive material micron order micrometric displacement by it, belong to hi-Fix equipment technical field.
[background technology]
Intellectual material, as piezoelectric ceramic and magnetostrictive material, can realize micron order location.After piezoelectric ceramic applies voltage, by piezoelectricity positive result, realize micrometric displacement location, realize larger location stroke by displacement amplifying mechanism or closed assembly mode.Piezoelectric ceramic weak point is that material itself is more crisp, and it is limited tangentially to bear load force.Be different from piezoelectric ceramic, magnetostrictive material, by applying magnetic field, utilize magnetic effect to realize micrometric displacement location.Conventional magnetostrictive material have Terfenol_D and iron gallium alloy Galfenol, wherein, iron gallium alloy Galfenol magnetostrictive material are firm, can bear the load force of larger different directions, and the Galfenol of stress anneal type normally can work in without precompression situation.
Patent (application number 200610150582.7, Authorization Notice No. CN101166005) utilizes magnetostrictive material in conjunction with micro displacement magnifying mechanism, realizes micrometric displacement adjustable drive by regulating electric current.Patent (application number 200710125011.2, publication number CN101188874) adopts permanent magnet to provide excitation field for magnetostrictive material.Change magnetostrictive material internal magnetic field by coil current, realize micro-displacement and drive.Patent (application number 200410090867.7, publication number CN1619938) utilizes coil drive magnetostrictive material to drive as stroke directions, utilizes piezoelectric ceramic to do hoop position, realizes long distance and high precision location.Applying quiescent biasing magnetic field permanent magnet body is placed on shell by patent (application number 200510056369.5, publication number: CN1670977), and coil and magnetostrictive material are placed on inside, realize Micro-displacement Driving.
At present, magnetic telescopic driver utilizes magnetic telescopic driver positive result, and adopt permanent magnet to provide quiescent biasing magnetic field, the magnetic that regulating winding electric current changes in magnetostrictive material is close, realizes micrometric displacement adjustment.The weak point of this type of drive is that energy consumption is large, and temperature is high.Magnetostrictive material magnetic permeability is usually lower, and this just needs more number of ampere turns to drive, and in coil, electric current can produce thermal losses.Often add the steady operation of extra heat radiation cooling device guarantee actuator in actual use.
Therefore, for solving the problems of the technologies described above, the necessary moving-magnetic type mangneto micro-displacement driver providing a kind of innovation, to overcome described defect of the prior art.
[summary of the invention]
For solving the problems of the technologies described above, the object of the present invention is to provide a kind of moving-magnetic type mangneto micro-displacement driver that macroscopical displacement that electric rotating machine or linear electric motors drive permanent magnet to produce can be converted to the displacement of magnetostrictive material micron order microcosmic.
For achieving the above object, the technical solution used in the present invention is: a kind of moving-magnetic type mangneto micro-displacement driver, and it comprises outer conducting magnet core, interior conducting magnet core, permanent magnet, magnetostrictive material, hold-down bolt, butterfly spring and output shaft; Wherein, described outer conducting magnet core and interior conducting magnet core are oppositely arranged; Described permanent magnet is arranged between outer conducting magnet core and interior conducting magnet core; Described magnetostrictive material are positioned at conducting magnet core; Described hold-down bolt is bolted on interior conducting magnet core; Described butterfly spring is connected between hold-down bolt and output shaft; Described output shaft is connected to the side of magnetostrictive material, and is driven by magnetostrictive material.
Moving-magnetic type mangneto micro-displacement driver of the present invention is further: described outer conducting magnet core and interior conducting magnet core are formed by silicon steel sheet closed assembly, or are integrally processed by solid steel, or is formed by the die casting of SMC magnetic powder material.
Moving-magnetic type mangneto micro-displacement driver of the present invention is further: described permanent magnet adopts the permanent magnet of neodymium iron boron NdFeB material, and its radial magnetizing, the polarity in inner side or outside is identical.
Moving-magnetic type mangneto micro-displacement driver of the present invention is further: described magnetostrictive material adopt terbium dysprosium ferrum Terfenol_D or iron gallium alloy Galfenol.
Moving-magnetic type mangneto micro-displacement driver of the present invention also can be: described permanent magnet is driven in conjunction with leading screw mode by electric rotating machine, or by linear motor direct drive.
Compared with prior art, the present invention has following beneficial effect: macroscopical displacement that permanent magnet produces by moving-magnetic type mangneto micro-displacement driver of the present invention converts the displacement of magnetostrictive material micron order to, and the electric rotating machine comparatively ripe by technology and techniques of linear motor combine with magnetostrictive material Micro-displacement Driving technology.Permanent magnet suffered reluctance force in rectilinear motion is minimum.Coil only exists in electric rotating machine and linear electric motors, and it produces heat does not affect magnetostrictive material, ensures its stable operation, realizes hi-Fix.
[accompanying drawing explanation]
Fig. 1 is the structural representation of moving-magnetic type mangneto micro-displacement driver of the present invention.
Fig. 2 is permanent magnet magnetic line of force trend graph when centre position.
Fig. 3 is permanent magnet magnetic line of force trend graph when departing from centre position.
[embodiment]
Refer to shown in Figure of description 1 to accompanying drawing 3, the present invention is a kind of moving-magnetic type mangneto micro-displacement driver, and it is made up of a few parts such as outer conducting magnet core 1, interior conducting magnet core 2, permanent magnet 3, magnetostrictive material 4, hold-down bolt 5, butterfly spring 6 and output shafts 7.
Wherein, described outer conducting magnet core 1 and interior conducting magnet core 2 are oppositely arranged.For plate armature, outer conducting magnet core 1 and interior conducting magnet core 2 can by silicon steel sheet closed assemblies; For cylindric low frequency applications occasion, outer conducting magnet core 1 and interior conducting magnet core 2 integrally can be processed by solid steel; For cylindric frequency applications occasion, outer conducting magnet core 1 and interior conducting magnet core 2 can be formed by the die casting of SMC magnetic powder material.
Described permanent magnet 3 is arranged between outer conducting magnet core 1 and interior conducting magnet core 2, and it adopts the permanent magnet of neodymium iron boron NdFeB material, its radial magnetizing, and the polarity in inner side or outside is identical.Described permanent magnet 3 does horizontal linear displacement, and permanent magnet 3 is driven in conjunction with leading screw mode by electric rotating machine, also can by linear motor direct drive.
Described magnetostrictive material 4 are positioned at conducting magnet core 2, and it adopts terbium dysprosium ferrum Terfenol_D or iron gallium alloy Galfenol.
Described hold-down bolt 5 is bolted on interior conducting magnet core 2.Described butterfly spring 6 is connected between hold-down bolt 5 and output shaft 7.Described output shaft 7 is connected to the side of magnetostrictive material 4, and is driven by magnetostrictive material 4.
The operation principle of moving-magnetic type mangneto micro-displacement driver of the present invention is as follows: as shown in Figure 2, permanent magnet 3 is when two interior conducting magnet core 2 middles, its magnetic line of force produced directly forms loop by outer conducting magnet core 1 and interior conducting magnet core 2, not by magnetostrictive material 4.As shown in Figure 3, when permanent magnet 3 external drive left or move right depart from center time, part permanent magnet 3 produce the magnetic line of force will form closed-loop path by outer conducting magnet core 1, interior conducting magnet core 2 and magnetostrictive material 4; Magnetostrictive material 4 produce micrometric displacement under the influence of a magnetic field and stretch, linkage output shaft 7; Permanent magnet 3 reciprocating motion in particular range can ensure that magnetostrictive material 4 are operated in the range of linearity.
The present invention utilizes permanent magnet 3 to provide driving magnetic field for magnetostrictive material 4, changes driving magnetic field in magnetostrictive material 4, thus change magnetostrictive material 4 collapsing length by the position changing permanent magnet 3.Electric rotating machine or linear electric motors can drive macroscopical displacement of permanent magnet to rotate the micrometric displacement changing magnetostrictive material 4 into and drive by the present invention, can realize micron order and control.Coil only exists in electric rotating machine or linear electric motors, and its heat produced can not affect magnetostrictive material 4, and therefore, drive operation is stablized, and is applicable to hi-Fix demand.And another advantage of driver of the present invention is that the change of permanent magnet 3 position causes reluctance linear to change, if do not consider that hysteresis effect affects, in theory permanent magnet 3 moving displacement and magnetostrictive material 4 displacement linear.
Above embodiment is only the preferred embodiment of this creation, and not in order to limit this creation, any amendment made within all spirit in this creation and principle, equivalent replacement, improvement etc., within the protection range that all should be included in this creation.
Claims (5)
1. a moving-magnetic type mangneto micro-displacement driver, is characterized in that: comprise outer conducting magnet core, interior conducting magnet core, permanent magnet, magnetostrictive material, hold-down bolt, butterfly spring and output shaft; Wherein, described outer conducting magnet core and interior conducting magnet core are oppositely arranged; Described permanent magnet is arranged between outer conducting magnet core and interior conducting magnet core; Described magnetostrictive material are positioned at conducting magnet core; Described hold-down bolt is bolted on interior conducting magnet core; Described butterfly spring is connected between hold-down bolt and output shaft; Described output shaft is connected to the side of magnetostrictive material, and is driven by magnetostrictive material.
2. moving-magnetic type mangneto micro-displacement driver as claimed in claim 1, is characterized in that: described outer conducting magnet core and interior conducting magnet core are formed by silicon steel sheet closed assembly, or are integrally processed by solid steel, or is formed by the die casting of SMC magnetic powder material.
3. moving-magnetic type mangneto micro-displacement driver as claimed in claim 1, is characterized in that: described permanent magnet adopts the permanent magnet of neodymium iron boron NdFeB material, and its radial magnetizing, the polarity in inner side or outside is identical.
4. moving-magnetic type mangneto micro-displacement driver as claimed in claim 1, is characterized in that: described magnetostrictive material adopt terbium dysprosium ferrum Terfenol_D or iron gallium alloy Galfenol.
5. moving-magnetic type mangneto micro-displacement driver as claimed in claim 1, is characterized in that: described permanent magnet is driven in conjunction with leading screw mode by electric rotating machine, or by linear motor direct drive.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510351682.5A CN104993734B (en) | 2015-06-24 | 2015-06-24 | A kind of moving-magnetic type mangneto micro-displacement driver |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510351682.5A CN104993734B (en) | 2015-06-24 | 2015-06-24 | A kind of moving-magnetic type mangneto micro-displacement driver |
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| CN104993734A true CN104993734A (en) | 2015-10-21 |
| CN104993734B CN104993734B (en) | 2017-11-24 |
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| CN201510351682.5A Expired - Fee Related CN104993734B (en) | 2015-06-24 | 2015-06-24 | A kind of moving-magnetic type mangneto micro-displacement driver |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245600A (en) * | 2018-11-08 | 2019-01-18 | 中国人民解放军陆军工程大学 | Non-coil type ultra-magnetic deformation actuator |
| CN110011564A (en) * | 2019-05-05 | 2019-07-12 | 中国人民解放军陆军工程大学 | Clamp formula ultra-magnetic telescopic linear drive apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100244622A1 (en) * | 2007-10-03 | 2010-09-30 | Feonic Plc | Magnetostrictive actuator |
| CN203788192U (en) * | 2014-03-05 | 2014-08-20 | 上海应用技术学院 | Annular fin type giant magnetostrictive actuator device |
| CN203933441U (en) * | 2014-04-14 | 2014-11-05 | 浙江理工大学 | Realize the linear electric machine of three grades of controls based on iron gallium alloy |
-
2015
- 2015-06-24 CN CN201510351682.5A patent/CN104993734B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100244622A1 (en) * | 2007-10-03 | 2010-09-30 | Feonic Plc | Magnetostrictive actuator |
| CN203788192U (en) * | 2014-03-05 | 2014-08-20 | 上海应用技术学院 | Annular fin type giant magnetostrictive actuator device |
| CN203933441U (en) * | 2014-04-14 | 2014-11-05 | 浙江理工大学 | Realize the linear electric machine of three grades of controls based on iron gallium alloy |
Non-Patent Citations (1)
| Title |
|---|
| 夏永明,叶云岳,卢琴芬,于明湖: "《动磁式直线振荡电机特性研究》", 《第十三届中国小电机技术研讨会论文集》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109245600A (en) * | 2018-11-08 | 2019-01-18 | 中国人民解放军陆军工程大学 | Non-coil type ultra-magnetic deformation actuator |
| CN109245600B (en) * | 2018-11-08 | 2023-10-03 | 中国人民解放军陆军工程大学 | Non-coil type super magnetostriction actuator |
| CN110011564A (en) * | 2019-05-05 | 2019-07-12 | 中国人民解放军陆军工程大学 | Clamp formula ultra-magnetic telescopic linear drive apparatus |
| CN110011564B (en) * | 2019-05-05 | 2023-10-03 | 中国人民解放军陆军工程大学 | Clamp type giant magnetostrictive linear driving device |
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| CN104993734B (en) | 2017-11-24 |
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