CN203608110U - Magnetostriction-type inertial impact driver - Google Patents
Magnetostriction-type inertial impact driver Download PDFInfo
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- CN203608110U CN203608110U CN201320850202.6U CN201320850202U CN203608110U CN 203608110 U CN203608110 U CN 203608110U CN 201320850202 U CN201320850202 U CN 201320850202U CN 203608110 U CN203608110 U CN 203608110U
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- driving shaft
- terfenol
- cantilever beam
- cantilever beams
- magnetostriction
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Abstract
A magnetostriction-type inertial impact driver comprises a frame, a driving shaft, coils, cantilever beams and Terfenol-D slices. Two ends of the driving shaft are installed in a through hole of the frame and form clearance fit with the through hole. The cantilever beams are symmetrically installed on two sides of the driving shaft. Free ends of the cantilever beams are provided with counterweight blocks. The Terfenol-D slices are bonded to one side of each cantilever beam. Largest magnetostrictive directions of the Terfenol-D slices are the same and are the same with a length direction of the cantilever beams. The coils which are arranged on the frame and are symmetrically distributed sleeve the cantilever beams of the two sides of the driving shaft. The cantilever beams pass through the coils. By using the magnetostriction-type inertial impact driver of the utility model, because the driving shaft, the cantilever beams and the Terfenol-D slices are not contacted with the coils, a moving part does not need to drag a power supply cable during a moving process. Therefore, an interference of the power supply cable to the driver can be greatly reduced and motion precision and stability of the driver are increased.
Description
Technical field
The utility model relates to a kind of magnetostriction type inertia impact driver.
Background technology
Inertia impact driver refers at sawtooth waveforms and drives under the effect of signal, utilizes the drive source inertial impact force that distortion produces fast to realize a kind of driving mechanism of micrometric displacement.Because it has the many advantages such as volume is little, driving voltage is low, cost is low, need the field of precision positioning to present wide application prospect in aviation, robot, micromachined etc.Early stage inertia impact motor is mainly electromagnetic type, is driving element structure inertia impact motor and generally adopt at present piezoelectric.Piezoelectric type inertia impact driver has obtained application with its unique advantage in fields such as cell manipulation, fiber alignment, digital camera jitter compensations, has represented bright market prospects.But, still there are some outstanding problems in piezoelectric type inertia impact driver, it utilizes the inverse piezoelectric effect of piezoelectric to drive, type of drive is that voltage drives, need cable that electric energy is provided, conventionally inertia impact actuator mechanism size is little, lightweight, and the deadweight of power cable and vibration can produce considerable influence to the kinematic accuracy of driver.In addition, piezoelectric, in having the advantage that response is fast, deformation precision is high, also exists that deformation quantity is little, the little deficiency of exerting oneself, and makes piezoelectric type inertia impact driver not ideal enough aspect translational speed and load capacity.
Giant magnetostrictive material is a kind of New Magnetic Field Controlled machine functional material, adopts field drives, thereby can realize without cable and driving.As the Typical Representative of giant magnetostrictive material, Terfenol-D is the novel magnetostriction alloy of one that rare earth element terbium (Tb), dysprosium (Dy) and metallic elements of ferrum (Fe) are prepared from by a certain percentage, having large strain, high accuracy, brute force and respond the advantages such as fast, reliability is high, is the ideal material of structure precision driver.
Summary of the invention
The purpose of this utility model is just to provide that a kind of range of strain is large, kinematic accuracy is high, the magnetostriction type inertia impact driver of good stability.
Magnetostriction type inertia impact driver of the present utility model, comprises frame, driving shaft, coil, cantilever beam, Terfenol-D thin slice, is characterized in, the two ends of driving shaft are arranged in the through hole of frame, coordinate with via clearance, can in through hole, slide; Cantilever beam is arranged on the both sides of driving shaft symmetrically, and cantilever beam is rectangle sheet, and the free end of cantilever beam arranges balancing weight; Terfenol-D thin slice is bonded in a side of cantilever beam, all bonding some Terfenol-D thin slices in same side of every cantilever beam, and the maximum magnetostriction direction of Terfenol-D thin slice is consistent, and consistent with the length direction of cantilever beam; Be arranged on coil symmetrical in frame and be nested with on the cantilever beam of driving shaft both sides, cantilever beam is through coil, and described coil is rectangle.
Frame is non-magnet material, as copper, aluminium etc.; Driving shaft is non-magnet material, as copper, aluminium etc.; Cantilever beam is non-magnetic elastomeric material, as beryllium-bronze etc.; Balancing weight is non-magnet material.
The operation principle of magnetostriction type inertia impact driver of the present utility model: Terfenol-D thin slice extends along cantilever beam length direction in the coil magnetic field of energising, drives cantilever beam flexural deformation; The flexibility of cantilever beam increases with the elongation of Terfenol-D thin slice, and the elongation of Terfenol-D thin slice increases with the magnetic field intensity of coil; Terfenol-D thin slice, after coil blackout, magnetic field disappear, returns to the former length before energising, and cantilever beam also resets into the straightened condition before energising.Pass into the sawtooth current that the slow liter shown in Fig. 2 falls soon, one-period current signal drive under motion process be, the first step: coil passes into electric current; Second step: electric current slowly increases, Terfenol-D thin slice slowly extends, and cantilever beam drives balancing weight slowly bending left, and the frictional force between driving shaft and frame through hole makes driving shaft keep motionless; The 3rd step: electric current diminishes rapidly, Terfenol-D thin slice shortens rapidly, and cantilever beam drives balancing weight to reset rapidly to the right, and the frictional force between driving shaft and frame through hole is not enough to overcome inertial impact force, and driving axial moves left; The 4th step: electric current to zero, Terfenol-D thin slice recovers former length, and cantilever beam drives balancing weight to set back, and axially moves left and stops.
Magnetostriction type inertia impact driver of the present utility model, passes into the sawtooth current signal that slow liter as shown in Figure 2 falls soon, and under the current signal of a sawtooth period drives, driver motion process as shown in Figure 3; Pass into the sawtooth current signal that slow liter as shown in Figure 2 falls soon as continued, can realize the driving shaft of driver continuously to left movement; Based on same operation principle, if pass into the slow sawtooth current falling of the fast liter shown in Fig. 4, the driving shaft that can realize driver moves right continuously; Because driving shaft, cantilever beam, Terfenol-D thin slice all do not contact with coil, moving component is on motion process, without towing power cable, therefore, the interference of power cable to driver motion be can greatly reduce, thereby kinematic accuracy and the stability of driver improved.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the sawtooth current signal graph that slow liter of the present utility model falls soon;
Fig. 3 is motion principle schematic diagram of the present utility model;
Fig. 4 is the slow sawtooth current signal graph falling of fast liter of the present utility model.
Embodiment
A kind of magnetostriction type inertia impact driver, comprises frame 1, driving shaft 2, coil 3, cantilever beam 5, Terfenol-D thin slice 6, is characterized in, the two ends of driving shaft 2 are arranged in the through hole of frame 1, coordinate with via clearance; Cantilever beam 5 is arranged on the both sides of driving shaft 2 symmetrically, and cantilever beam 5 is rectangle sheet, and the free end of cantilever beam 5 arranges balancing weight 4; Terfenol-D thin slice 6 is bonded in a side of cantilever beam 5, can bonding some Terfenol-D thin slice 6 on every cantilever beam, and the maximum magnetostriction direction of Terfenol-D thin slice 6 is consistent, and consistent with the length direction of cantilever beam 5; Be arranged on coil symmetrical in frame 13 and be nested with on the cantilever beam 5 of driving shaft 2 both sides, cantilever beam 5 is through coil 3, and described coil 3 is rectangle, and Terfenol-D thin slice 6 thickness are 0.5-1mm, the long and wide 3-4mm that is.
Claims (3)
1. a magnetostriction type inertia impact driver, comprise frame (1), driving shaft (2), coil (3), cantilever beam (5), Terfenol-D thin slice (6), it is characterized in that: the two ends of driving shaft (2) are arranged in the through hole of frame (1), coordinate with via clearance; Cantilever beam (5) is arranged on the both sides of driving shaft (2) symmetrically, and the free end of cantilever beam (5) arranges balancing weight (4); Terfenol-D thin slice (6) is bonded in a side of cantilever beam (5), and the maximum magnetostriction direction of Terfenol-D thin slice (6) is consistent, and consistent with the length direction of cantilever beam (5); Be arranged on symmetrical coil (3) in frame (1) and be nested with on the cantilever beam (5) of driving shaft (2) both sides, cantilever beam (5) is through coil (3).
2. magnetostriction type inertia impact driver according to claim 1, is characterized in that: cantilever beam (5) is rectangle sheet.
3. magnetostriction type inertia impact driver according to claim 1, is characterized in that: described coil (3) is rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320850202.6U CN203608110U (en) | 2013-12-23 | 2013-12-23 | Magnetostriction-type inertial impact driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320850202.6U CN203608110U (en) | 2013-12-23 | 2013-12-23 | Magnetostriction-type inertial impact driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203608110U true CN203608110U (en) | 2014-05-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320850202.6U Expired - Fee Related CN203608110U (en) | 2013-12-23 | 2013-12-23 | Magnetostriction-type inertial impact driver |
Country Status (1)
| Country | Link |
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| CN (1) | CN203608110U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103684039A (en) * | 2013-12-23 | 2014-03-26 | 南昌工程学院 | Magnetostrictive inertial impact driver |
| CN105119519A (en) * | 2015-09-02 | 2015-12-02 | 南昌工程学院 | Terfenol-D-slice-based inertial impact linear driver |
-
2013
- 2013-12-23 CN CN201320850202.6U patent/CN203608110U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103684039A (en) * | 2013-12-23 | 2014-03-26 | 南昌工程学院 | Magnetostrictive inertial impact driver |
| CN103684039B (en) * | 2013-12-23 | 2017-01-11 | 南昌工程学院 | Magnetostrictive inertial impact driver |
| CN105119519A (en) * | 2015-09-02 | 2015-12-02 | 南昌工程学院 | Terfenol-D-slice-based inertial impact linear driver |
| CN105119519B (en) * | 2015-09-02 | 2017-06-16 | 南昌工程学院 | Inertia impact linear actuator based on Terfenol D thin slices |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 Termination date: 20151223 |
|
| EXPY | Termination of patent right or utility model |