CN105119520B - Galfenol-slice-based precise linear driver - Google Patents
Galfenol-slice-based precise linear driver Download PDFInfo
- Publication number
- CN105119520B CN105119520B CN201510556605.3A CN201510556605A CN105119520B CN 105119520 B CN105119520 B CN 105119520B CN 201510556605 A CN201510556605 A CN 201510556605A CN 105119520 B CN105119520 B CN 105119520B
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- China
- Prior art keywords
- galfenol
- housing
- drive shaft
- shell fragment
- thin slices
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- 239000012634 fragment Substances 0.000 claims description 27
- 230000005611 electricity Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 18
- 238000006073 displacement reaction Methods 0.000 abstract description 8
- 230000035939 shock Effects 0.000 abstract description 2
- 241001391944 Commicarpus scandens Species 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 4
- 229910001329 Terfenol-D Inorganic materials 0.000 description 4
- 230000005389 magnetism Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
Abstract
The invention discloses a Galfenol-slice-based precise linear driver comprising a housing, a coil, and a drive shaft. One end of the housing is enclosed and the other end is open; and an opened end cover is arranged at the open end. Two spring plates are arranged inside the housing; one end of each spring plate is connected to the enclosed end surface of the housing and the other end of the spring plate is connected with one end of the drive shaft; and the other end of the drive shaft passes through the open of the end cover. A cylindrical skeleton is arranged in the housing; and the coil winds around the cylindrical skeleton. Galfenol slices are bonded to the outer sides of the two spring plates, wherein the maximum magnetostriction directions of the two Galfenol slices are consistent and are consistent with the length directions of the spring plates. Besides, annular permanent magnets are respectively arranged at the two ends of the cylindrical skeleton, wherein the magnetic field directions of the two permanent magnets are consistent. According to the invention, because the Galfenol material has the high shock-resistant capability and is not easy to break after repeated deformation, the service life of the driver is prolonged indirectly; and the output displacement and output force of the driver are large.
Description
Technical field
The present invention relates to magnetostriction type driver, and in particular to a kind of accurate linear drives based on Galfenol thin slices
Device.
Background technology
Magnetostriction type driver is its material using magnetostriction materials when magnetic field size changes residing for outside
Accordingly deform and design.Existing magnetostriction type driver typically adopts Terfenol-D materials, Terfenol-D
Material has and drives stroke big, the advantages of drive high precision, fast response time, in precision positioning, vibration control, accurate acoustics
The fields such as device are widely used.However, the mechanical performance of Terfenol-D materials is poor, and easy embrittlement, impact resistance
Weak, these limit to a certain extent the application of Terfenol-D materials.
Galfenol materials are a kind of new magnetostriction functional materials, and strain is big, high precision, High power output, response
Quickly, and its good mechanical performance, embrittlement is difficult, is the ideal material for constructing precision driver.
At present, Galfenol materials are broadly divided into club-shaped material and lamellar material from application form.Club-shaped material one
As push directly on the linear actuator of form for construction, High power output but output displacement is little；And lamellar material is typically and bullet
Property Material cladding is configured to cantilever beam, and output displacement is big but power output is little.
The content of the invention
Thin slice technical problem to be solved is to provide a kind of satisfactory mechanical property, long service life, output by the present invention
The larger accurate linear actuator based on Galfenol thin slices of displacement and power output.
The technical solution used in the present invention is：A kind of accurate linear actuator based on Galfenol thin slices, it includes shell
Body, coil and drive shaft, the shell one end closing, one end open, opening is provided with the end cap of opening；Set in the housing
The one end for having two panels shell fragment, shell fragment is connected on the Closed End of housing, and the other end of shell fragment is connected with one end of drive shaft, is driven
Opening of the other end of moving axis through end cap；Cylindrical skeleton is provided with housing, wound around coil on cylindrical skeleton；Two panels shell fragment
Galfenol thin slices are bonded with lateral surface, the maximum mangneto telescopic direction of two panels Galfenol thin slice is consistent, and and shell fragment
Length direction it is consistent；The two ends of cylindrical skeleton are respectively arranged with the permanent magnet of ring-type, and the magnetic direction of two panels permanent magnet is consistent；
The magnetic direction produced after coil electricity is contrary with the magnetic direction of permanent magnet；Produce after the coil electricity for offsetting permanent magnetism
The magnetic field in body magnetic field, the shell fragment and propeller shaft sleeve are in cylindrical skeleton.
By such scheme, linear bearing is provided with the end cap opening of housing, the drive shaft is slidably matched with linear bearing.
By such scheme, the shell fragment is long rectangular tab, and the length-width ratio of long rectangular tab is 10：1, thickness be 0.8～
1mm。
By such scheme, the Galfenol thin slices are long rectangular tab, and the length-width ratio of the thin slice is 9：1, thickness is 0.3
～0.5mm.
By such scheme, the drive shaft is cylindrical shape.
By such scheme, the longitudinal center line of the drive shaft, the longitudinal center line of linear bearing, the axial centre of coil
The longitudinal center line of line, cylindrical skeleton and permanent magnet is same straight line.
Housing, end cap in the present invention is made up of permeability magnetic material, and drive shaft, cylindrical skeleton and shell fragment are by non-permeable material
Make.
The present invention operation principle be：After driver installation, permanent magnet produces bias magnetic field, and Galfenol thin slices are received
The effect of bias magnetic field deforms upon elongation, drives the outside lateral bend of two panels shell fragment, and drive shaft is also moved to the left therewith certain
Distance；Coil is passed through after electric current, produces driving magnetic field, adjusts the sense of current, makes the magnetic direction and bias magnetic field of driving magnetic field
Magnetic direction it is contrary；After driving magnetic field and bias magnetic field superposition, partial magnetic field is cancelled out each other, as electric current is gradually in coil
Increase, driving magnetic field gradually strengthens, and the total magnetic field acted on Galfenol thin slices is gradually weakened, Galfenol flaps collapses,
The bending amplitude of shell fragment reduces, and promotes driving axial to move right, so as to external power output or displacement；When driving magnetic field increases to foot
To be completely counterbalanced by during bias magnetic field, the deformation of Galfenol thin slices disappears, and shell fragment recovers therewith straightened condition, now, driving axial
Right output maximum displacement, as shown in Figure 3.
The invention has the beneficial effects as follows：1st, the Galfenol material strong shock resistances for adopting, not easily broken after repeated deformation
Split, the service life of driver is improve indirectly；2nd, permanent magnet is provided with, and raw bias magnetic field, and produce the biasing of drive shaft
Displacement, so that coil is passed through electric current rear drive shaft pushing away to the right, rather than contracts to the left；3rd, should by laminar Galfenol materials
For constructing linear actuator, output displacement and power output are larger.
Description of the drawings
Fig. 1 is the structural representation of a specific embodiment of the invention.
Top views of the Fig. 2 for the present embodiment shell fragment after bonding with Galfenol thin slices.
Fig. 3 is the motion schematic diagram of the present embodiment.
Wherein：1st, housing；2nd, cylindrical skeleton；3rd, coil；4th, permanent magnet；5th, drive shaft；6th, linear bearing；7、Galfenol
Thin slice；8th, shell fragment；9th, end cap.
Specific embodiment
In order to be better understood from the present invention, below in conjunction with the accompanying drawings the present invention is further illustrated with specific embodiment.
A kind of accurate linear actuator based on Galfenol thin slices as shown in Figure 1, including housing 1, coil 3 and driving
Axle 5, the one end of housing 1 closing, one end open, opening is provided with the end cap 9 of opening；Two panels shell fragment 8 is provided with the housing 1,
One end of shell fragment 8 is connected on the Closed End of housing 1, and the other end of shell fragment 8 is connected with one end of drive shaft 5, drive shaft 5
Opening of the other end through end cap 9；Galfenol thin slices 7 (as shown in Figure 2), two panels are bonded with the lateral surface of two panels shell fragment 8
The maximum mangneto telescopic direction of Galfenol thin slices 7 is consistent, and consistent with the length direction of shell fragment 8；Cylinder is provided with housing 1
Shape skeleton 2, wound around coil 3 on cylindrical skeleton 2；The two ends of cylindrical skeleton 2 are respectively arranged with the permanent magnet 4 of ring-type, two panels permanent magnetism
The magnetic direction of body 4 is consistent；The magnetic direction that coil 3 is produced after being powered is contrary with the magnetic direction of permanent magnet 4；The coil 3
The magnetic field for offsetting the magnetic field of permanent magnet 4 is produced after energization, the shell fragment 8 and drive shaft 5 are enclosed within cylindrical skeleton 2.
Preferably, linear bearing 6 is provided with the opening of end cap 9 of housing 1, the drive shaft 5 is slided with linear bearing 6 and matched somebody with somebody
Close.
Preferably, shell fragment 8 is long rectangular tab, and the length-width ratio of long rectangular tab is 10：1, thickness is 0.8～1mm.
Preferably, Galfenol thin slices 7 are long rectangular tab, and the length-width ratio of the thin slice is 9：1, thickness be 0.3～
0.5mm。
Preferably, drive shaft 5 is cylindrical shape；The longitudinal center line of drive shaft 5, the longitudinal center line of linear bearing 6, line
The longitudinal center line of the longitudinal center line, cylindrical skeleton 2 and permanent magnet 4 of circle 3 is same straight line.
Claims (6)
1. a kind of accurate linear actuator based on Galfenol thin slices, it includes housing, coil and drive shaft, the housing one
End seal is closed, one end open, and opening is provided with the end cap of opening；Two panels shell fragment, one end connection of shell fragment are provided with the housing
On the Closed End of housing, the other end of shell fragment is connected with one end of drive shaft, the other end the opening through end cap of drive shaft
Mouthful；Cylindrical skeleton is provided with housing, wound around coil on cylindrical skeleton；It is characterized in that：Divide equally on the lateral surface of two panels shell fragment
Be not bonded with Galfenol thin slices, the maximum mangneto telescopic direction of two panels Galfenol thin slice is consistent, and with the length of shell fragment
Direction is consistent；The two ends of cylindrical skeleton are respectively arranged with the permanent magnet of ring-type, and the magnetic direction of two panels permanent magnet is consistent；Coil leads to
The magnetic direction produced after electricity is contrary with the magnetic direction of permanent magnet；Produce after the coil electricity for offsetting magnetic field of permanent magnet
Magnetic field, the shell fragment and propeller shaft sleeve are in cylindrical skeleton.
2. the accurate linear actuator of Galfenol thin slices is based on as claimed in claim 1, it is characterised in that the end in housing
Linear bearing is provided with cover gab, the drive shaft is slidably matched with linear bearing.
3. the accurate linear actuator based on Galfenol thin slices as claimed in claim 1, it is characterised in that the shell fragment is
Long rectangular tab, the length-width ratio of long rectangular tab is 10：1, thickness is 0.8 ~ 1mm.
4. the accurate linear actuator of Galfenol thin slices is based on as claimed in claim 1, it is characterised in that described
Galfenol thin slices are long rectangular tab, and the length-width ratio of the thin slice is 9：1, thickness is 0.3 ~ 0.5mm.
5. the accurate linear actuator of Galfenol thin slices is based on as claimed in claim 1, it is characterised in that the drive shaft
For cylindrical shape.
6. the accurate linear actuator of Galfenol thin slices is based on as claimed in claim 5, it is characterised in that the drive shaft
Longitudinal center line, the longitudinal center line of linear bearing, the longitudinal center line of coil, the axial centre of cylindrical skeleton and permanent magnet
Line is same straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510556605.3A CN105119520B (en) | 2015-09-02 | 2015-09-02 | Galfenol-slice-based precise linear driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510556605.3A CN105119520B (en) | 2015-09-02 | 2015-09-02 | Galfenol-slice-based precise linear driver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105119520A CN105119520A (en) | 2015-12-02 |
| CN105119520B true CN105119520B (en) | 2017-04-12 |
Family
ID=54667440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510556605.3A Active CN105119520B (en) | 2015-09-02 | 2015-09-02 | Galfenol-slice-based precise linear driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105119520B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2854925Y (en) * | 2005-12-06 | 2007-01-03 | 武汉理工大学 | Supermagnetic microactuator |
| US7436104B2 (en) * | 2006-10-20 | 2008-10-14 | The Boeing Company | Non-linear piezoelectric mechanical-to-electrical generator system and method |
| CN103145087B (en) * | 2013-03-14 | 2015-09-09 | 南昌工程学院 | The magnetostriction type composite cantilever that Terfenol-D thin slice drives |
| CN204495494U (en) * | 2015-03-25 | 2015-07-22 | 武汉理工大学 | With the iron gallium alloy force snesor of precompressed mechanism |
| CN204928620U (en) * | 2015-09-02 | 2015-12-30 | 南昌工程学院 | Accurate sharp driver based on galfenol thin slice |
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2015
- 2015-09-02 CN CN201510556605.3A patent/CN105119520B/en active Active
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| Publication number | Publication date |
|---|---|
| CN105119520A (en) | 2015-12-02 |
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Effective date of registration: 20231225 Address after: 330096 No. 66, aixihu North Road, Nanchang high tech Industrial Development Zone, Nanchang City, Jiangxi Province (west side of F1 floor and west side of F5 floor) Patentee after: State Power Investment Group Jiangxi Zhongye Xingda Power Industry Co.,Ltd. Address before: 330099 No.289 Tianxiang Avenue, high tech Zone, Nanchang City, Jiangxi Province Patentee before: NANCHANG INSTITUTE OF TECHNOLOGY |
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