CN205666764U - Step -by -step piezo -actuator - Google Patents
Step -by -step piezo -actuator Download PDFInfo
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- CN205666764U CN205666764U CN201620571601.2U CN201620571601U CN205666764U CN 205666764 U CN205666764 U CN 205666764U CN 201620571601 U CN201620571601 U CN 201620571601U CN 205666764 U CN205666764 U CN 205666764U
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- resilient material
- piezoelectric vibrator
- friction
- low friction
- quality piece
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Abstract
The utility model relates to a step -by -step piezo -actuator, including piezoelectric vibrator, middle quality piece, side quality piece and compound cantilever, two measure -alike piezoelectric vibrator is about middle quality piece symmetrical arrangement, and fixed connection is on middle quality piece and side quality piece respectively at piezoelectric vibrator's both ends, and compound cantilever constitutes with high friction elastic material laminating for thin - type structure and by low friction elastic material, low friction elastic material with high friction elastic material's coefficient of friction is different, low friction elastic material and high friction elastic material's laminating face with the bonding face of piezoceramics and elastic medium board is parallel, the lower bottom surface of middle quality piece and work plane contactless, compound cantilever with work plane contact, the piezoelectric vibrator vibration, side quality piece produces the motion and makes the compound elbow of hanging bent, different coefficient of friction's material contact work plane in the compound cantilever, the driver can produce directional motion, simple structure, suitability for environment advantage such as strong.
Description
Technical field
This utility model belongs to Piezoelectric Driving field, is specifically related to a kind of step piezoelectric driver.
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 stepping pressure
Electric drive, this driver is made up of piezoelectric vibrator, intermediate mass block, side mass and composite cantilever, and piezoelectric vibrator is at alternation
Producing flexural deformation under the effect of electric current, side mass produces vibration, and composite cantilever produces bending, within a period of motion,
Owing to composite cantilever uses the material of different coefficients of friction, different materials frictional force when contacting working face is different, frictional force
Little then displacement is big, and driver is towards less material one lateral movement of coefficient of friction.This utility model, compared with current driver, is transported
Dynamic more stable, simple in construction, and ambient adaptability is strong.
To achieve these goals, this utility model is by the following technical solutions:
This utility model one step piezoelectric driver, including piezoelectric vibrator, intermediate mass block and side mass, its feature
Being also to include composite cantilever, wherein said piezoelectric vibrator is constituted by piezoelectric ceramics and elastic base plate are bonding, and two equivalently-sized
Described piezoelectric vibrator be arranged symmetrically with about intermediate mass block, the two ends of described piezoelectric vibrator are respectively fixedly connected with at intermediate mass
On block and side mass；Described composite cantilever is sheet type structure and by low friction resilient material and high friction resilient material lamination
Constituting, described low friction resilient material and described high friction resilient material are all sheet type structure and equivalently-sized, described low rub
Wipe the coefficient of friction coefficient of friction less than described high friction resilient material of elastomeric material, at each described side mass lower surface
It is arranged vertically four described composite cantilever, the lamination face of described low friction resilient material and high friction resilient material and described piezoelectricity
Pottery is parallel with the bonding plane of elastic base plate, and all of described low friction resilient material is towards the same side；Described intermediate mass block
Bottom surface do not contact with working face, described composite cantilever contacts with described working face.
The composite cantilever quantity of each described side mass lower surface can be M row N row, and M is more than or equal to 2, and N is more than
In 2.
During work, piezoelectric vibrator occurs cyclic bending to deform as power source under the effect of alternating voltage, side mass
Composite cantilever flexural deformation while motion, within a period of motion, owing to composite cantilever uses the material of different coefficients of friction
Material, different materials frictional force when contacting working face is different, and driver is towards less material one lateral movement of coefficient of friction
Total distance is more than total distance of material one lateral movement bigger towards coefficient of friction, therefore driver is towards the little material of coefficient of friction
One lateral movement.Within a cycle, during 1/4 to four cycle, piezoelectric vibrator bends, and side mass is made by piezoelectric vibrator
Exerting oneself and travel forward, intermediate mass block is by counteracting force backward rearward movement, in side mass lower surface and work
Make the composite cantilever bending of plane contact, the low friction resilient material contact working face that coefficient of friction is less, side mass the
Once travelling forward, during 1/4th week end of term, the state of driver is as shown in the upside figure dotted line in Fig. 3, and solid line is a week
Initial position when phase starts；During 3/1 to four/4ths cycles, side mass is by piezoelectric vibrator active force backward
And rearward movement, intermediate mass block is by counteracting force forward and travels forward, the high friction resilient material that coefficient of friction is bigger
Material contact working face, side mass for the first time rearward movement, during 3/4ths week end of term in the state of driver such as Fig. 3 in
Between shown in figure dotted line, initial position when solid line is to start in a cycle；During 3 to one/4th cycle, side mass is subject to
Piezoelectric vibrator active force forward also travels forward, and intermediate mass block is by counteracting force backward rearward movement, friction system
The low friction resilient material contact working face that number is less, mass second time in side travels forward, driver during all end of term
State as shown in the downside figure dotted line in Fig. 3, initial position when solid line is to start in a cycle, due to low friction resilient material
The coefficient of friction of material is less than high friction resilient material, therefore the frictional force that low friction resilient material produces is less than high friction resilient material
The frictional force produced, in the cycle, the frictional force that when side mass is for the first time and second time travels forward, composite cantilever produces
Less than frictional force during rearward movement for the first time, therefore side mass first time and the proal total distance of second time are more than side matter
Total distance of gauge block rearward movement for the first time, on the basis of the mass of side, driver travels forward.
Accompanying drawing explanation
Fig. 1 is the installation diagram of this utility model a kind of step piezoelectric driver.
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 step piezoelectric driver, including piezoelectric vibrator 1, intermediate mass block 2 and
Side mass 3, it is characterised in that also including composite cantilever 4, wherein said piezoelectric vibrator 1 is by piezoelectric ceramics 11 and elastic base plate 12
Bonding composition, two equivalently-sized described piezoelectric vibrators 1 are arranged symmetrically with about intermediate mass block 2, the two of described piezoelectric vibrator 1
End is respectively fixedly connected with on intermediate mass block 2 and side mass 3；Described composite cantilever 4 is sheet type structure and by low friction
Elastomeric material 41 and high friction resilient material 42 lamination are constituted, described low friction resilient material 41 and described high friction resilient material
42 is all sheet type structure and equivalently-sized, and the coefficient of friction of described low friction resilient material 41 is less than described high friction resilient material
The coefficient of friction of material 42, in each described side, mass 3 lower surface is arranged vertically four described composite cantilever 4, described low friction
Elastomeric material 41 is parallel with the bonding plane of described piezoelectric ceramics 11 and elastic base plate 12 with the lamination face of high friction resilient material 42,
All of described low friction resilient material 41 is towards the same side；The bottom surface of described intermediate mass block 2 does not connects with working face 5
Touching, described composite cantilever 4 contacts with described working face 5.During work, piezoelectric vibrator 1 as power source at the work of alternating voltage
Deform with lower generation cyclic bending, composite cantilever 4 flexural deformation while side mass 3 motion, within a period of motion, by
Use the material of different coefficients of friction in composite cantilever 4, different materials frictional force when contacting working face 5 is different, driver
Towards total more than material one lateral movement bigger towards coefficient of friction of total distance of less material one lateral movement of coefficient of friction
Distance, therefore driver is towards little material one lateral movement of coefficient of friction.
Claims (2)
1. a step piezoelectric driver, including piezoelectric vibrator (1), intermediate mass block (2) and side mass (3), its feature exists
In also including composite cantilever (4), wherein:
Described piezoelectric vibrator (1) is by piezoelectric ceramics (11) and elastic base plate (12) is bonding constitutes, two equivalently-sized described pressures
Electric tachometer indicator (1) is arranged symmetrically with about intermediate mass block (2), and the two ends of described piezoelectric vibrator (1) are respectively fixedly connected with in middle interstitial
On gauge block (2) and side mass (3)；Described composite cantilever (4) is sheet type structure and by low friction resilient material (41) and height
Friction resilient material (42) lamination is constituted, and described low friction resilient material (41) and described high friction resilient material (42) are all thin
Flap-type structure and equivalently-sized, the coefficient of friction of described low friction resilient material (41) is less than described high friction resilient material (42)
Coefficient of friction, in each described side, mass (3) lower surface is arranged vertically four described composite cantilever (4), described low friction
Gluing of the lamination face of elastomeric material (41) and high friction resilient material (42) and described piezoelectric ceramics (11) and elastic base plate (12)
Junction is parallel, and all of described low friction resilient material (41) is towards the same side；The bottom surface of described intermediate mass block (2) and work
Making plane (5) not contact, described composite cantilever (4) contacts with described working face (5).
2. according to a kind of step piezoelectric driver described in claim one, it is characterised in that: under each described side mass (3)
Composite cantilever (4) quantity on surface can be 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 |
|---|---|---|---|
| CN201620571601.2U CN205666764U (en) | 2016-06-12 | 2016-06-12 | Step -by -step piezo -actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620571601.2U CN205666764U (en) | 2016-06-12 | 2016-06-12 | Step -by -step piezo -actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205666764U true CN205666764U (en) | 2016-10-26 |
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ID=57155120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620571601.2U Withdrawn - After Issue CN205666764U (en) | 2016-06-12 | 2016-06-12 | Step -by -step piezo -actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205666764U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106059377A (en) * | 2016-06-12 | 2016-10-26 | 吉林大学 | Stepping piezoelectric actuator |
| CN108063564A (en) * | 2018-01-12 | 2018-05-22 | 吉林大学 | A kind of novel friction type linear piezoelectric actuator |
-
2016
- 2016-06-12 CN CN201620571601.2U patent/CN205666764U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106059377A (en) * | 2016-06-12 | 2016-10-26 | 吉林大学 | Stepping piezoelectric actuator |
| CN108063564A (en) * | 2018-01-12 | 2018-05-22 | 吉林大学 | A kind of novel friction type linear piezoelectric actuator |
| CN108063564B (en) * | 2018-01-12 | 2023-12-01 | 吉林大学 | Novel friction type linear piezoelectric 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 |
Granted publication date: 20161026 Effective date of abandoning: 20171124 |
|
| AV01 | Patent right actively abandoned |