CN204928620U - Accurate sharp driver based on galfenol thin slice - Google Patents
Accurate sharp driver based on galfenol thin slice Download PDFInfo
- Publication number
- CN204928620U CN204928620U CN201520678958.6U CN201520678958U CN204928620U CN 204928620 U CN204928620 U CN 204928620U CN 201520678958 U CN201520678958 U CN 201520678958U CN 204928620 U CN204928620 U CN 204928620U
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- China
- Prior art keywords
- thin slice
- shell fragment
- galfenol
- driving shaft
- permanent magnet
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Abstract
The utility model discloses an accurate sharp driver based on galfenol thin slice, it includes casing, coil and drive shaft, casing one end is sealed, and one end opening, open end are provided with the open -ended end cover, be equipped with two shell fragments in the casing, the one end of shell fragment is connected on the closed end face of casing, and the other end of shell fragment links to each other with the one end of drive shaft, and the other end of drive shaft passes the opening of end cover, be provided with the cylindric skeleton in the casing, wound wire circle on the cylindric skeleton, it has the galfenol thin slice to bond on the lateral surface of two shell fragments, and the biggest magnetic induced shrinkage or elongation direction of two galfenol thin slices is unanimous to it is unanimous with the length direction of shell fragment, the both ends of cylindric skeleton are provided with annular permanent magnet respectively, and the magnetic field direction of two permanent magnets is unanimous. The utility model discloses a shock resistance is strong for the galfenol material, and difficult fracture behind the repeated deformation has improved the life of driver indirectly, and the output displacement of driver and power output are all great.
Description
Technical field
The utility model relates to magnetostriction type driver, is specifically related to a kind of precise direct line drive based on Galfenol thin slice.
Background technology
Magnetostriction type driver utilizes magnetostrictive material when outside residing magnetic field size changes, and corresponding the deforming of its material is designed.Existing magnetostriction type driver generally adopts Terfenol-D material, it is large that Terfenol-D material has driving stroke, driving precision is high, the advantages such as fast response time, is widely used in fields such as precision positioning, vibration control, accurate acoustical devices.But the mechanical performance of Terfenol-D material is poor, easy embrittlement, impact resistance is weak, and these limit the application of Terfenol-D material to a certain extent.
Galfenol material is a kind of novel magnetostriction functional material, and strain is large, and precision is high, High power output, and response is quick, and its good mechanical performance, not easily embrittlement, is the ideal material of structure precision driver.
At present, Galfenol material is mainly divided into club-shaped material and lamellar material from application form.Club-shaped material is generally used for the linear actuator constructing direct promotion form, High power output but output displacement is little; And lamellar material generally becomes cantilever beam with elastomeric material compound structure, output displacement is large but power output is little.
Summary of the invention
The technical problems to be solved in the utility model is, provides the precise direct line drive based on Galfenol thin slice that a kind of satisfactory mechanical property, long service life, output displacement and power output are all larger.
The technical scheme that the utility model adopts is: a kind of precise direct line drive based on Galfenol thin slice, and it comprises housing, coil and driving shaft, and described shell one end is closed, one end open, and openend is provided with the end cap of opening; Be provided with two panels shell fragment in described housing, one end of shell fragment is connected on the Closed End of housing, and the other end of shell fragment is connected with one end of driving shaft, and the other end of driving shaft passes the opening of end cap; Cylindrical skeleton is provided with, winding around on cylindrical skeleton in housing; The lateral surface of two panels shell fragment is bonded with Galfenol thin slice, the maximum mangneto telescopic direction of two panels Galfenol thin slice is consistent, and consistent with the length direction of shell fragment; 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 the magnetic field for offsetting magnetic field of permanent magnet after described coil electricity, described shell fragment and propeller shaft sleeve are in cylindrical skeleton.
By such scheme, the end cap opening part of housing is provided with linear bearing, and described driving shaft and linear bearing are slidably matched.
By such scheme, described shell fragment is long rectangular tab, and the length-width ratio of long rectangular tab is 10:1, and thickness is 0.8 ~ 1mm.
By such scheme, described Galfenol thin slice is long rectangular tab, and the length-width ratio of this thin slice is 9:1, and thickness is 0.3 ~ 0.5mm.
By such scheme, described driving shaft is cylindrical shape.
By such scheme, the longitudinal center line of the longitudinal center line of the longitudinal center line of described driving shaft, the longitudinal center line of linear bearing, coil, cylindrical skeleton and permanent magnet is same straight line.
Housing in the utility model, end cap are made up of permeability magnetic material, and driving shaft, cylindrical skeleton and shell fragment are made up of non-permeable material.
Operation principle of the present utility model is: after driver installation, and permanent magnet produces bias magnetic field, and Galfenol thin slice extends by the effect generation deformation of bias magnetic field, and drive two panels shell fragment to bend laterally, driving shaft is also moved to the left certain distance thereupon; After coil passes into electric current, produce driving magnetic field, the adjustment sense of current, makes the magnetic direction of driving magnetic field contrary with the magnetic direction of bias magnetic field; After driving magnetic field and bias magnetic field superpose, partial magnetic field is cancelled out each other, along with the increase gradually of electric current in coil, driving magnetic field strengthens gradually, the total magnetic field acted on Galfenol thin slice is weakened gradually, Galfenol flaps collapse, and the bending amplitude of shell fragment reduces, promotion driving axial moves right, thus externally power output or displacement; When driving magnetic field increase to be enough to offset bias magnetic field completely time, the deformation of Galfenol thin slice disappear, shell fragment recovers straightened condition thereupon, and now, driving shaft exports maximum displacement to the right, as shown in Figure 3.
The beneficial effects of the utility model are: the Galfenol material strong shock resistance 1, adopted, and not easy fracture after repeated deformation, improves the useful life of driver indirectly; 2, be provided with permanent magnet, and raw bias magnetic field, and produce the biased displacement of driving shaft, thus make coil pass into electric current rear drive shaft to push away to the right, instead of contract left; 3, by laminar Galfenol materials application in structure linear actuator, output displacement and power output are all larger.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model specific embodiment.
Fig. 2 be the present embodiment shell fragment bonding with Galfenol thin slice after vertical view.
Fig. 3 is the motion schematic diagram of the present embodiment.
Wherein: 1, housing; 2, cylindrical skeleton; 3, coil; 4, permanent magnet; 5, driving shaft; 6, linear bearing; 7, Galfenol thin slice; 8, shell fragment; 9, end cap.
Embodiment
In order to better understand the utility model, below in conjunction with the drawings and specific embodiments, the utility model is further described.
A kind of precise direct line drive based on Galfenol thin slice as shown in Figure 1, comprises housing 1, coil 3 and driving shaft 5, and housing 1 one end is closed, one end open, and openend is provided with the end cap 9 of opening; Be provided with two panels shell fragment 8 in described 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 driving shaft 5, and the other end of driving shaft 5 passes the opening of end cap 9; The lateral surface of two panels shell fragment 8 is bonded with Galfenol thin slice 7 (as shown in Figure 2), the maximum mangneto telescopic direction of two panels Galfenol thin slice 7 is consistent, and consistent with the length direction of shell fragment 8; Cylindrical skeleton 2 is provided with, winding around 3 on cylindrical skeleton 2 in housing 1; The two ends of cylindrical skeleton 2 are respectively arranged with the permanent magnet 4 of ring-type, and the magnetic direction of two panels permanent magnet 4 is consistent; The magnetic direction produced after coil 3 is energized is contrary with the magnetic direction of permanent magnet 4; Produce the magnetic field for offsetting permanent magnet 4 magnetic field after described coil 3 is energized, described shell fragment 8 and driving shaft 5 are enclosed within cylindrical skeleton 2.
Preferably, end cap 9 opening part of housing 1 is provided with linear bearing 6, and described driving shaft 5 is slidably matched with linear bearing 6.
Preferably, shell fragment 8 is long rectangular tab, and the length-width ratio of long rectangular tab is 10:1, and thickness is 0.8 ~ 1mm.
Preferably, Galfenol thin slice 7 is long rectangular tab, and the length-width ratio of this thin slice is 9:1, and thickness is 0.3 ~ 0.5mm.
Preferably, driving shaft 5 is cylindrical shape; The longitudinal center line of the longitudinal center line of the longitudinal center line of driving shaft 5, the longitudinal center line of linear bearing 6, coil 3, cylindrical skeleton 2 and permanent magnet 4 is same straight line.
Claims (6)
1. based on a precise direct line drive for Galfenol thin slice, it comprises housing, coil and driving shaft, and described shell one end is closed, one end open, and openend is provided with the end cap of opening; Be provided with two panels shell fragment in described housing, one end of shell fragment is connected on the Closed End of housing, and the other end of shell fragment is connected with one end of driving shaft, and the other end of driving shaft passes the opening of end cap; Cylindrical skeleton is provided with, winding around on cylindrical skeleton in housing; It is characterized in that: the lateral surface of two panels shell fragment is bonded with Galfenol thin slice respectively, the maximum mangneto telescopic direction of two panels Galfenol thin slice is consistent, and consistent with the length direction of shell fragment; 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 the magnetic field for offsetting magnetic field of permanent magnet after described coil electricity, described shell fragment and propeller shaft sleeve are in cylindrical skeleton.
2., as claimed in claim 1 based on the precise direct line drive of Galfenol thin slice, it is characterized in that, the end cap opening part in housing is provided with linear bearing, and described driving shaft and linear bearing are slidably matched.
3., as claimed in claim 1 based on the precise direct line drive of Galfenol thin slice, it is characterized in that, described shell fragment is long rectangular tab, and the length-width ratio of long rectangular tab is 10:1, and thickness is 0.8 ~ 1mm.
4. as right will remove the precise direct line drive based on Galfenol thin slice as described in 1, it is characterized in that, described Galfenol thin slice is long rectangular tab, and the length-width ratio of this thin slice is 9:1, and thickness is 0.3 ~ 0.5mm.
5., as claimed in claim 1 based on the precise direct line drive of Galfenol thin slice, it is characterized in that, described driving shaft is cylindrical shape.
6. as claimed in claim 5 based on the precise direct line drive of Galfenol thin slice, it is characterized in that, the longitudinal center line of the longitudinal center line of the longitudinal center line of described driving shaft, the longitudinal center line of linear bearing, coil, cylindrical skeleton and permanent magnet is same straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520678958.6U CN204928620U (en) | 2015-09-02 | 2015-09-02 | Accurate sharp driver based on galfenol thin slice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520678958.6U CN204928620U (en) | 2015-09-02 | 2015-09-02 | Accurate sharp driver based on galfenol thin slice |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204928620U true CN204928620U (en) | 2015-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520678958.6U Withdrawn - After Issue CN204928620U (en) | 2015-09-02 | 2015-09-02 | Accurate sharp driver based on galfenol thin slice |
Country Status (1)
| Country | Link |
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| CN (1) | CN204928620U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119520A (en) * | 2015-09-02 | 2015-12-02 | 南昌工程学院 | Galfenol-slice-based precise linear driver |
-
2015
- 2015-09-02 CN CN201520678958.6U patent/CN204928620U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119520A (en) * | 2015-09-02 | 2015-12-02 | 南昌工程学院 | Galfenol-slice-based precise linear driver |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151230 Effective date of abandoning: 20170412 |