CN206759337U - Stick-slip linear actuator based on piezoelectric fabric - Google Patents
Stick-slip linear actuator based on piezoelectric fabric Download PDFInfo
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- CN206759337U CN206759337U CN201720338675.6U CN201720338675U CN206759337U CN 206759337 U CN206759337 U CN 206759337U CN 201720338675 U CN201720338675 U CN 201720338675U CN 206759337 U CN206759337 U CN 206759337U
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- mover
- piezoelectric fabric
- sheet type
- compliant mechanism
- driving head
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Abstract
The stick-slip linear actuator based on piezoelectric fabric is the utility model is related to, belongs to micro-nano precision actuation field.It is made up of pedestal (1), pretightning force weighted platform (2), stator (3), mover (4)；Wherein pretightning force weighted platform (2) and mover (4) be arranged on pedestal (1) on, stator (3) be arranged on pretightning force weighted platform (2) on, and with mover (4) Elastic Contact；Described stator (3) is the compliant mechanism for being stained with piezoelectric fabric (3 2), by applying sawtooth waveforms electric signal to piezoelectric fabric (3 2), piezoelectric fabric (3 2) slowly extends, it is quick to shorten, based on stick-slip principle, stator (3) is produced friction drive, be delivered to by driving head (3 1 3) on mover (4), driving mover (4) motion.The utility model has the advantages that：It is simple in construction, precision is high, stroke is big, available for fields such as micro-nano technology, precision optics, Aero-Space.
Description
Technical field
The stick-slip linear actuator based on piezoelectric fabric is the utility model is related to, belongs to micro-nano precision actuation technical field.
Background technology
Along with the fast development in the fields such as precision and ultra-precision machining, electronics, biotechnology, accurate measurement, to micro-nano
The requirement more and more higher of rice precision actuation technology, each research institution is also actively entering to big stroke, high-precision piezoelectric actuator
Row research.Big stroke and high accuracy are conflicting, how preferably to solve this contradiction, realize big stroke, high-precision piezoelectricity
Driver turns into a urgent problem to be solved.Piezoelectric fabric is a kind of new piezoelectric, has flexible big, quality
It is small, it is adapted to be attached at surface, higher electromechanical coupling factor, the advantages that survivability is strong, available for realizing big stroke, high-precision
The design of the piezoelectric actuator of degree.
The content of the invention
In order to realize big stroke, high-precision combination, the utility model discloses a kind of stick-slip straight line based on piezoelectric fabric
Driver.
The utility model is achieved through the following technical solutions：Stick-slip linear actuator based on piezoelectric fabric is by pedestal, pre-
Clamp force weighted platform, stator, mover composition, wherein pretightning force weighted platform and mover are arranged on pedestal, and stator is arranged on pre-
On clamp force weighted platform.Described stator includes compliant mechanism, piezoelectric fabric, screw, spring-damper；Apply to piezoelectric fabric
Sawtooth waveforms electric signal, in slow deformation stage, piezoelectric fabric slowly extends, and sheet type arc compliant mechanism slowly stretches, curvature
Diminish, driving head is produced y to displacement, produce friction drive, driving mover motion；In the rapid deformation stage, piezoelectric fabric
Quick to shorten, sheet type arc compliant mechanism snapback, curvature becomes big, reduces frictional resistance.
Described compliant mechanism includes U-shaped buckstay, the straight flexible hinge of sheet type, driving head, the submissive machine of sheet type arc
Structure, screwed hole；Described U-shaped buckstay (3-1-1), the straight flexible hinge of sheet type, driving head and sheet type arc compliant mechanism
Connection cyclization clockwise；The straight flexible hinge of described sheet type uses sheet-like structure of the thickness for a, described sheet type arc
Compliant mechanism uses thickness as b arc thin slices；Piezoelectric fabric is stained with the downside of sheet type arc compliant mechanism, can drive driving head around
The micro- rotation of the straight flexible hinge of sheet type, driving mover motion；Described screwed hole is used to install spring-damper, and stator can be achieved
The regulation of pretightning force between mover.
Described driving head is provided with driving head pretension plane, for being contacted with spring-damper；It is provided with driving head drive
Dynamic cambered surface, for mover elastic linear contact, mover can be driven to move.
Operation principle：Piezoelectric fabric has the characteristic for the elongation that is powered, and based on the characteristic, piezoelectric fabric is bonded at into the thin of stator
On the downside of chip arc compliant mechanism, the size of pretightning force is adjusted by spring-damper, is stained with by the excitation of sawtooth waveforms electric signal
The stator of piezoelectric fabric, stator is produced friction drive, be delivered to by driving head on mover, driving mover motion.
The beneficial effects of the utility model are：It is simple in construction, precision is high, stroke is big.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding to of the present utility model, forms the part of the application,
Illustrative example of the present utility model and its illustrate be used for explain the utility model, do not form to improper limit of the present utility model
It is fixed.
Fig. 1 show structural representation of the present utility model；
Fig. 2 show stator structure schematic diagram of the present utility model；
Fig. 3 show compliant mechanism structural representation of the present utility model；
Fig. 4 show compliant mechanism partial enlarged drawing of the present utility model；
Fig. 5 show driving principle schematic diagram of the present utility model；
Fig. 6 show sawtooth waveform schematic diagram of the present utility model.
Wherein：1st, pedestal；2nd, pretightning force weighted platform；3rd, stator；3-1, compliant mechanism；3-1-1, U-shaped buckstay；3-1-
2nd, the straight flexible hinge of sheet type；3-1-3, driving head；3-1-4, sheet type arc compliant mechanism；3-1-5, screwed hole；3-2, pressure
Electric fiber；3-3, screw；3-4, spring-damper；4th, mover.
Embodiment
Detailed content and its embodiment of the present utility model are further illustrated below in conjunction with the accompanying drawings.
Referring to shown in Fig. 1 to Fig. 6, present embodiment provides a kind of the specific of stick-slip linear actuator based on piezoelectric fabric
Embodiment.Stick-slip linear actuator based on piezoelectric fabric is by pedestal (1), pretightning force weighted platform (2), stator (3), mover
(4) form, wherein pretightning force weighted platform (2) and mover (4) are arranged on pedestal (1), and stator (3) loads installed in pretightning force
On platform (2).Described stator (3) includes compliant mechanism (3-1), piezoelectric fabric (3-2), screw (3-3), spring-damper
(3-4)；Apply sawtooth waveforms electric signal to piezoelectric fabric (3-2), in the slow deformation stages of 0-t1, piezoelectric fabric (3-2) is slowly stretched
Long, sheet type arc compliant mechanism (3-1-4) slowly stretches, and curvature diminishes, and driving head (3-1-3) is produced y to displacement, produces
Friction drive, driving mover (4) motion；In the t1-t2 rapid deformation stages, piezoelectric fabric (3-2) quickly shortens, sheet type arc
Shape compliant mechanism (3-1-4) snapback, curvature become big, reduce frictional resistance.
Described compliant mechanism (3-1) includes U-shaped buckstay (3-1-1), the straight flexible hinge of sheet type (3-1-2), driving
Head (3-1-3), sheet type arc compliant mechanism (3-1-4), screwed hole (3-1-5)；Described U-shaped buckstay (3-1-1), thin slice
Connection is cyclic clockwise for the straight flexible hinge of formula (3-1-2), driving head (3-1-3) and sheet type arc compliant mechanism (3-1-4)；Institute
The straight flexible hinge of sheet type (3-1-2) stated uses sheet-like structure of the thickness for a, described sheet type arc compliant mechanism
(3-1-4) uses thickness as b arc thin slices；Piezoelectric fabric (3-2) is stained with the downside of sheet type arc compliant mechanism (3-1-4), can
Driving head (3-1-3) is driven around the straight flexible hinge of sheet type (3-1-2) micro- rotation, driving mover (4) motion；Described screwed hole
(3-1-5) is used to install spring-damper (3-4), and the regulation of pretightning force between stator (3) and mover (4) can be achieved.
Described driving head (3-1-3) is provided with driving head pretension plane (3-1-3-1), for spring-damper (3-
4) contact；Driving head driving cambered surface (3-1-3-2) is provided with, for being moved with mover (4) elastic linear contact, driving mover (4).
Claims (3)
1. the stick-slip linear actuator based on piezoelectric fabric, it is characterised in that：By pedestal (1), pretightning force weighted platform (2), determine
Sub (3), mover (4) composition, wherein pretightning force weighted platform (2) and mover (4) are arranged on pedestal (1), and stator (3) is arranged on
On pretightning force weighted platform (2), and with mover (4) Elastic Contact；It is fine that described stator (3) includes compliant mechanism (3-1), piezoelectricity
Tie up (3-2), screw (3-3), spring-damper (3-4)；Apply sawtooth waveforms electric signal to piezoelectric fabric (3-2), slowly deforming
Stage, piezoelectric fabric (3-2) slowly extend, and sheet type arc compliant mechanism (3-1-4) slowly stretches, and curvature diminishes, and makes driving
Head (3-1-3) produces y to displacement, produces friction drive, driving mover (4) motion；In the rapid deformation stage, piezoelectric fabric
(3-2) quickly shortens, sheet type arc compliant mechanism (3-1-4) snapback, and curvature becomes big, reduces frictional resistance, suppresses
Mover (4) retracts.
2. the stick-slip linear actuator according to claim 1 based on piezoelectric fabric, it is characterised in that：Described submissive machine
Structure (3-1) includes U-shaped buckstay (3-1-1), the straight flexible hinge of sheet type (3-1-2), driving head (3-1-3), sheet type arc
Compliant mechanism (3-1-4), screwed hole (3-1-5)；Described U-shaped buckstay (3-1-1), the straight flexible hinge of sheet type (3-1-2),
Connection is cyclic clockwise for driving head (3-1-3) and sheet type arc compliant mechanism (3-1-4)；The straight flexible hinge of described sheet type
(3-1-2) uses sheet-like structure of the thickness for a, and described sheet type arc compliant mechanism (3-1-4) uses thickness as b arcs
Thin slice；Piezoelectric fabric (3-2) is stained with the downside of sheet type arc compliant mechanism (3-1-4), driving head (3-1-3) can be achieved around thin slice
The straight flexible hinge of formula (3-1-2) micro- rotation, driving mover (4) motion；Described screwed hole (3-1-5) is used to install spring damping
Device (3-4), the regulation of pretightning force between stator (3) and mover (4) can be achieved.
3. the stick-slip linear actuator according to claim 1 based on piezoelectric fabric, it is characterised in that：Described driving head
(3-1-3) is provided with driving head pretension plane (3-1-3-1), for being contacted with spring-damper (3-4)；It is provided with driving head drive
Dynamic cambered surface (3-1-3-2), for mover (4) Elastic Contact, mover (4) can be driven to move.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720338675.6U CN206759337U (en) | 2017-04-01 | 2017-04-01 | Stick-slip linear actuator based on piezoelectric fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720338675.6U CN206759337U (en) | 2017-04-01 | 2017-04-01 | Stick-slip linear actuator based on piezoelectric fabric |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206759337U true CN206759337U (en) | 2017-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720338675.6U Expired - Fee Related CN206759337U (en) | 2017-04-01 | 2017-04-01 | Stick-slip linear actuator based on piezoelectric fabric |
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| Country | Link |
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| CN (1) | CN206759337U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849743A (en) * | 2017-04-01 | 2017-06-13 | 吉林大学 | Stick-slip linear actuator based on piezoelectric fabric |
-
2017
- 2017-04-01 CN CN201720338675.6U patent/CN206759337U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849743A (en) * | 2017-04-01 | 2017-06-13 | 吉林大学 | Stick-slip linear actuator based on piezoelectric fabric |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171215 Termination date: 20200401 |
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| CF01 | Termination of patent right due to non-payment of annual fee |