CN205666773U - Variable damping piezo -actuator - Google Patents
Variable damping piezo -actuator Download PDFInfo
- Publication number
- CN205666773U CN205666773U CN201620579814.XU CN201620579814U CN205666773U CN 205666773 U CN205666773 U CN 205666773U CN 201620579814 U CN201620579814 U CN 201620579814U CN 205666773 U CN205666773 U CN 205666773U
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- China
- Prior art keywords
- resilient material
- elastic material
- low friction
- piezoelectric vibrator
- piezoelectric
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Abstract
The utility model relates to a variable damping piezo -actuator, including piezoelectric vibrator, quality piece and compound cantilever, piezoelectric vibrator's both ends difference fixed connection is on quality piece and compound cantilever, compound cantilever constitutes with high friction elastic material laminating for thin - type structure and by low friction elastic material, low friction elastic material and high friction elastic material are thin - type structure and measure -alike, low friction elastic material is different with high friction elastic material's coefficient of friction, the bonding face of piezoceramics and elastic medium board is parallel with high friction elastic material's laminating face with low friction elastic material, piezoelectric vibrator's bending motion drives the bending of compound cantilever, different coefficient of friction's material contact work plane in the compound cantilever, driver directional motion, the utility model discloses also can work in the complex environment, suitability for environment is strong to owing to be the elastic material contact, long service life also can normally be worked in compound cantilever wearing and tearing.
Description
Technical field
This utility model belongs to Piezoelectric Driving field, is specifically related to a kind of mutative damp piezoelectric actuator.
Background technology
Along with the development of science and technology, micro drives technology is at ultraprecise machinery and manufacture, accurate measurement, biologic medical
Deng occupying increasingly consequence in ambit, mini drive the most increasingly receives publicity at civilian aspect.Piezoelectricity is made pottery
Ceramic material possess high accuracy, response is fast, drive that power is low, operating frequency width, not by advantages such as electromagnetic interference, the most in recent years,
Thus class component is comparatively fast developed as the precision driver in the source of driving.But, existing piezoelectric type mini drive
Structure is relative complex, processing difficulties, relatively costly, and mostly is rigid structure, and during work, driver is the most firm with working face
Property contact, of a relatively high to the requirement of working environment, the suitability is strong, therefore design a kind of simple in construction, motion stabilization, environment
The strong microminiature driver of the suitability is the most necessary.
Summary of the invention
For solving the problems such as the motion of current miniature piezoelectric drivers is unstable, the suitability is the strongest, it is proposed that a kind of mutative damp
Piezoelectric actuator, this driver is made up of piezoelectric vibrator, mass and composite cantilever, and piezoelectric vibrator is under the effect of alternating current
Producing flexural deformation, the bending of piezoelectric vibrator drives composite cantilever bending, in a working cycle process, in conjunction with composite cantilever
The effect of the elastomeric material of different coefficients of friction, driver is towards less material one lateral movement of coefficient of friction.This utility model
Compared with current driver, move more stable, service life length and ambient adaptability strong.
To achieve these goals, this utility model is by the following technical solutions:
This utility model one mutative damp piezoelectric actuator, including piezoelectric vibrator and mass, is further characterized in that and includes
Composite cantilever, one end of described piezoelectric vibrator described in two of which is respectively fixedly connected with the described composite cantilever of equivalent, two institutes
The other end stating piezoelectric vibrator is fixedly connected on described mass；Described composite cantilever is sheet type structure and by low friction bullet
Property material and high friction resilient material lamination constitute, described low friction resilient material and described high friction resilient material are all thin slice
Type structure and equivalently-sized, the coefficient of friction of described low friction resilient material is less than the friction system of described high friction resilient material
Number, all of described low friction resilient material is towards the same side；Described piezoelectric vibrator is by the bonding structure of piezoelectric ceramics and elastic base plate
Become, the bonding plane of described piezoelectric ceramics and described elastic base plate and described low friction resilient material and described high friction resilient material
Lamination face parallel.
The quantity of described piezoelectric vibrator and corresponding described composite cantilever is M row N row, and M is more than or equal to 2, and N is more than or equal to
2。
During work, driver being placed on working face, composite cantilever contacts with working face.Piezoelectric vibrator is as dynamic
Power source occurs cyclic bending to deform under the effect of alternating voltage, and piezoelectric vibrator drives composite cantilever to produce bending.Such as Fig. 3 institute
Showing, piezoelectric vibrator curvature movement to the left to peak swing position are limit on the left position, as shown by the solid line；Piezoelectric vibrator bends to the right
Moving to peak swing position is limit on the right-right-hand limit position, shown in dotted line.As shown in the upside figure in Fig. 3, piezoelectric vibrator is from left pole
Extreme position moves to limit on the right-right-hand limit position, and the low friction resilient material contact working face that coefficient of friction is less, composite cantilever is subject to
Piezoelectric vibrator active force to the right moves right, mass by piezoelectric vibrator counteracting force to the left to left movement, mass
Being A to the distance of left movement, this process is referred to as first half term；And then, as shown in the downside figure in Fig. 3, piezoelectric vibrator is from right pole
Extreme position moves to limit on the left position, and the material of contact working face is become rubbing from the low friction resilient material that coefficient of friction is less
Wiping the bigger high friction resilient material of coefficient, composite cantilever is subject to left movement, mass by piezoelectric vibrator active force to the left
Moving right to piezoelectric vibrator counteracting force to the right, the distance that mass moves right is B, and this process is referred to as the second half.After
Half way is compared to first half term, and the frictional force that composite cantilever is subject to is little, due to piezoelectric vibrator during extreme position compared with big then move distance
Amplitude constant, therefore the move distance B of the second half mass more than first half term mass motion distance A.First half term adds later half
Journey is a cycle of operation of driver, and on the basis of mass, driver completes the distance that a cycle of operation moved and is
B-A, driver moves right.
Accompanying drawing explanation
Fig. 1 is the installation diagram of this utility model a kind of mutative damp piezoelectric actuator.
Fig. 2 is the structural representation of composite cantilever in this utility model.
Motion schematic diagram when Fig. 3 is utility model works.
Detailed description of the invention
Seeing figures.1.and.2, this utility model one mutative damp piezoelectric actuator, including piezoelectric vibrator 1, mass 2 and multiple
Closing cantilever 3, one end of two described piezoelectric vibrators 1 is respectively fixedly connected with the described composite cantilever 3 of equivalent, two described pressures
The other end of electric tachometer indicator 1 is fixedly connected on described mass 2；Described composite cantilever 3 is sheet type structure and by low friction bullet
Property material 31 and high friction resilient material 32 lamination constitute, described low friction resilient material 31 and described high friction resilient material 32
Being all sheet type structure and equivalently-sized, the coefficient of friction of described low friction resilient material 31 is less than described high friction resilient material
The coefficient of friction of 32, all of described low friction resilient material 31 is towards the same side；Described piezoelectric vibrator 1 is by piezoelectric ceramics 11 He
The bonding composition of elastic base plate 12, the bonding plane of described piezoelectric ceramics 11 and described elastic base plate 12 and described low friction resilient material
31 is parallel with the lamination face of described high friction resilient material 32.
During work, piezoelectric vibrator 1 produces flexural deformation under the effect of alternating current, and the bending of piezoelectric vibrator 1 drives multiple
Close cantilever bending 3, in a working cycle process, in conjunction with the effect of the elastomeric material of composite cantilever 3 different coefficients of friction, drive
Dynamic device is towards less material one lateral movement of coefficient of friction.
Claims (2)
1. a mutative damp piezoelectric actuator, including piezoelectric vibrator (1) and mass (2), is further characterized in that and includes compound hanging
Arm (3), wherein:
One end of two described piezoelectric vibrators (1) is respectively fixedly connected with the described composite cantilever (3) of equivalent, two described pressures
The other end of electric tachometer indicator (1) is fixedly connected on described mass (2)；Described composite cantilever (3) is sheet type structure and by low
Friction resilient material (31) and high friction resilient material (32) lamination are constituted, and described low friction resilient material (31) and described height rub
Wiping elastomeric material (32) be all sheet type structure and equivalently-sized, and the coefficient of friction of described low friction resilient material (31) is less than institute
Stating the coefficient of friction of high friction resilient material (32), all of described low friction resilient material (31) is towards the same side；Described pressure
Electric tachometer indicator (1) is by piezoelectric ceramics (11) and elastic base plate (12) is bonding constitutes, described piezoelectric ceramics (11) and described elastic base plate
(12) bonding plane is parallel with the lamination face of described low friction resilient material (31) and described high friction resilient material (32).
2. according to a kind of mutative damp piezoelectric actuator described in claim one, it is characterised in that: described piezoelectric vibrator (1) and right
The quantity of the described composite cantilever (3) answered is M row N row, and M is more than or equal to 2, and N is more than or equal to 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620579814.XU CN205666773U (en) | 2016-06-12 | 2016-06-12 | Variable damping piezo -actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620579814.XU CN205666773U (en) | 2016-06-12 | 2016-06-12 | Variable damping piezo -actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205666773U true CN205666773U (en) | 2016-10-26 |
Family
ID=57155226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620579814.XU Withdrawn - After Issue CN205666773U (en) | 2016-06-12 | 2016-06-12 | Variable damping piezo -actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205666773U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846719A (en) * | 2016-06-12 | 2016-08-10 | 吉林大学 | Variable damping piezoelectric actuator |
| CN107947627A (en) * | 2018-01-12 | 2018-04-20 | 吉林大学 | A kind of more piezoelectric vibrator bidirectional drives |
| CN108916637A (en) * | 2018-06-27 | 2018-11-30 | 西南科技大学 | A kind of friction surface and its design method influencing frictional force |
-
2016
- 2016-06-12 CN CN201620579814.XU patent/CN205666773U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846719A (en) * | 2016-06-12 | 2016-08-10 | 吉林大学 | Variable damping piezoelectric actuator |
| CN105846719B (en) * | 2016-06-12 | 2017-10-10 | 吉林大学 | A kind of mutative damp piezoelectric actuator |
| CN107947627A (en) * | 2018-01-12 | 2018-04-20 | 吉林大学 | A kind of more piezoelectric vibrator bidirectional drives |
| CN108916637A (en) * | 2018-06-27 | 2018-11-30 | 西南科技大学 | A kind of friction surface and its design method influencing frictional force |
| CN108916637B (en) * | 2018-06-27 | 2020-06-16 | 西南科技大学 | Friction surface influencing friction force and design method thereof |
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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 |
Granted publication date: 20161026 Effective date of abandoning: 20171010 |
|
| AV01 | Patent right actively abandoned |