CN101119079A - Triangle bended plate type piezoelectric straight line ultrasound electric motor - Google Patents
Triangle bended plate type piezoelectric straight line ultrasound electric motor Download PDFInfo
- Publication number
- CN101119079A CN101119079A CNA200710045921XA CN200710045921A CN101119079A CN 101119079 A CN101119079 A CN 101119079A CN A200710045921X A CNA200710045921X A CN A200710045921XA CN 200710045921 A CN200710045921 A CN 200710045921A CN 101119079 A CN101119079 A CN 101119079A
- Authority
- CN
- China
- Prior art keywords
- piezoelectric
- triangle
- electric motor
- straight line
- plate type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The present invention relates to a triangular bent-plate piezoelectric linear ultrasonic motor, including a stator and a rotor. The rotor is a linear guide rail, the upper part of which is supported by two guide wheels with the spring support parallel arranged, while the lower part is supported by the stator. The stator consists of a hollow triangular elastic frame and a piezoelectric actuator adhering on the outside surface of the frame. The triangular top point of the hollow triangular elastic frame has a projection abutting with the bottom surface of the linear guide rail, while the midpoint of the bottom edge of the triangle has a clamp fastener connected with the seat. The motor of the invention has a relatively small lateral dimension, can be used for the bidirectional driving and controlling, and has the advantages of simple structure, use convenience and low cost.
Description
Technical field
The present invention relates to the miniature linear that a kind of rectilinear motion drove and controlled dual-purpose, particularly a kind of triangle bended plate type linear ultrasonic motor simple and compact for structure.
Background technology
Along with dynamo-electric industry develops to high precision int, electronic product is microminiaturization and slimming just rapidly.In many fields such as information technology, semiconductor manufacturing, industrial detection, military most advanced and sophisticated equipment, biologic medical, Aero-Space, the rectilinear motion type of drive of traditional electric rotating machine acceleration and deceleration machine more and more is difficult to meet the demands, and presses for miniature linear that can directly drive, compact conformation.Piezoelectric straight line ultrasound electric motor has after big, controlled good, the outage of direct driving, power to volume ratio can self-locking, noise is low, can be used for advantages such as strong magnetic and vacuum environment, becomes novel electrical micro-machine hot of research and development.Yet laterally (perpendicular to the direction of rectilinear motion output) size is generally bigger than normal for the piezoelectric straight line ultrasound electric motor of exploitation at present, has limited its Application for Field in spatial form dimensional requirement harshness.The piezoelectric straight line ultrasound electric motor that has cost for general purpose user is too high.
A kind of linear ultrasonic motor is arranged in the prior art, and (application for a patent for invention number: 200510122995.X), this motor comprises stator, mover and support.Stator is by the effect beam, and an arc frame and a strand slice are formed.It has utilized 3 stacked piezoelectric elements, 2 right and lefts that are arranged in stator wherein, be called the stacked piezoelectric element of longitudinal vibration, excite the stator top to drive the horizontal direction vibration of lug boss, 1 below that is arranged in stator in addition, be called the curved stacked piezoelectric element that shakes, excite the vertical vibration of lug boss.When the stacked piezoelectric element of two longitudinal vibrations adopts the two-phase phase difference is 180 ° two-phase sinusoidal signal excitation, the curved stacked piezoelectric element that shakes adopts with above-mentioned two-phase phase difference when all being 90 ° sinusoidal signal excitation, under the synergy of three groups of stacked piezoelectric elements, the stator top drives lug boss and produces elliptic motion, utilizes friction to promote mover and exports continuous rectilinear motion.This motor major defect is, part is more, causes complex process, and cost is higher, and stacked piezoelectric element is difficult for obtaining.
Summary of the invention
The objective of the invention is to the defective that exists at prior art, provide a kind of lateral dimension triangle bended plate type piezoelectric straight line ultrasound electric motor smaller, bi-directional drive and control usefulness.Simple in structure, do not use special process and components and parts, it is convenient, cheap to drive and control.
For achieving the above object, mainly take following several technical measures.
1) become solid stator and be hollow stator---
Existing piezoelectric linear motor, its stator adopts solid construction substantially.The benefit of solid construction is the thrust output that can increase motor, but also brings the processing request height, the shortcoming of motor Heavy Weight.The fillet plate brake forming of piezoelectric linear motor of the present invention, motor stator, manufacture craft is simple, very light in weight.
2) realize elliptic motion with triangular structure---
The operation principle of nearly all linear ultrasonic motor all is consistent, inspire the resonance of motor oscillating, and manage on the driving interface of ticker to form oval-shaped oscillation trajectory, guide rail or slide block (straight line mover) are close on the driving interface of ticker, and the effect that so just can utilize friction converts the vibration of stator to the motion output of rectilinear direction.The mode that makes ticker produce elliptic vibration has varied, has also just caused electric machine structure to vary.Piezoelectric linear motor of the present invention adopts the long isosceles triangular structure in base, the hypotenuse of two symmetries constitutes power arm, and during the convex or concave flexural vibrations, triangular apex moves up and down two arms in the same way, during the incorgruous convex or concave flexural vibrations of two arms, triangular apex is done left and right sides weaving.Can synthesize the elliptic vibration track thus.
3) vibrational energy is effectively exported---
Utilize piezoelectric ceramic to excite elastomeric flexural vibrations, amplitude is very small, can't produce effective friction power transmission driving action.Even utilize elastomeric resonance to amplify the amplitude of vibration, also be limited, be difficult to satisfy the driving requirement.For this reason, the present invention has adopted the structure that is called Unimorph (vibrating reed that is composited by monolithic piezoelectric ceramic and elastic sheet metal), and at its end, the vibration amplitude of piezoelectric ceramic is effectively amplified.For making the transverse vibration amplitude also obtain amplifying, in the triangular apex Position Design one projective structure.For preventing the effect of contraction of motor guiding fixture, only link with a fixing point and guiding fixture at middle part, triangle ticker base to vibration.
According to abovementioned technology, the present invention adopts following technical proposals:
A kind of triangle bended plate type piezoelectric straight line ultrasound electric motor comprises stator and mover, it is characterized in that mover is a line slideway, and the directive wheel by two band spring stabilizers that be arranged in parallel above it supports, and following by stator support; Described stator is made up of with piezoelectric actuated that sticks on its outer surface three-pointed hollow star elastomer framework, there is the conflict bottom surface of described line slideway of lug boss at the triangular apex place of this three-pointed hollow star elastomer framework, and the midpoint on its triangle base has clamper to fixedly connected with base.
Above-mentioned three-pointed hollow star elastomer framework is the member of carbon steel or duralumin, hard alumin ium alloy or copper, perhaps is composite element.
Above-mentioned three-pointed hollow star elastomer framework is for for the panel beating bent member, perhaps cuts for line or the member of stamping-out moulding.
Above-mentioned piezoelectric actuated be upper and lower surface evenly apply galactic pole, along the piezoelectric ceramic piece of thickness direction polarization.
The polarised direction of two piezoelectric actuated piezoelectric ceramic pieces on the above-mentioned triangle base outer surface that is pasted on three-pointed hollow star elastomer framework is in the same way, and guarantees that the polarised direction of two piezoelectric actuated piezoelectric ceramic pieces on its triangle two hypotenuse outer surfaces is incorgruous.
The signal of telecommunication access way of piezoelectric actuated piezoelectric ceramic piece of above-mentioned excitation: two piezoelectric actuated piezoelectric ceramic piece on the three-pointed hollow star elastomer framework triangle two hypotenuse outer surfaces inserts excitation signal of telecommunication A, and two piezoelectric actuated piezoelectric ceramic piece on its triangle base outer surface inserts excitation signal of telecommunication B, three-pointed hollow star elastomer framework ground connection, phase difference is 90 degree between excitation signal of telecommunication A and the excitation signal of telecommunication B.
A kind of triangle bended plate type piezoelectric straight line ultrasound electric motor comprises stator and mover, it is characterized in that mover is a line slideway, and the guide face wheel by two band spring leaf legs that be arranged in parallel above it supports the relative horizontal location with base of this line slideway; Described stator is made up of with piezoelectric actuated that sticks on its outer surface three-pointed hollow star elastomer framework, the triangular apex of this three-pointed hollow star elastomer framework has the conflict bottom surface of described line slideway of lug boss, and its triangle base has clamper to be fixedly supported on the base.
The present invention has following conspicuous outstanding substantive distinguishing features and remarkable advantage compared with prior art:
1) owing to paste piezoelectric ceramic piece on the employing three-pointed hollow star elastomer framework, structure is simple especially, and is cheap, is particularly suitable for for precision and the less demanding general workplace of thrust.
2) the motor lateral dimension is less relatively, can be used for the narrow occasion of motor accommodation space.
3) motor need not complicated guiding fixture.
Description of drawings
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the structural representation of another embodiment of the present invention.
Embodiment
Embodiment one:
Referring to Fig. 1, this triangle bended plate type piezoelectric straight line ultrasound electric motor comprises stator and mover, mover is a line slideway 10, support by two directive wheels that have spring stabilizer 4 that be arranged in parallel 5 above it, and following by stator support, this stator is made up of with piezoelectric actuated 2,7,8,10 that sticks on its outer surface three-pointed hollow star elastomer framework 1.Elastomer can be metal materials such as carbon steel, duralumin, hard alumin ium alloy, copper, also can be higher nonmetallic materials or composite material of the better hardness of other elasticity.Employed piezoelectric actuated be upper and lower surface evenly apply galactic pole, along the piezoelectric ceramic piece of thickness direction polarization, so be piezoelectric ceramic piece to call piezoelectric actuated in the following text.Stator is the left-right symmetric structure.There is lug boss 3 top of stator (being the vertex of a triangle place).Trip bolt forms framework 1 and tight whole.There is clamper 9 center of the lower crossbeam of motor (being the midpoint on triangle base).Clamper 9 can be made up of trip bolt and rectangle cushion block, links to each other with basis 11.Line slideway (or being called slide block) 6, be pressed in the end of motor lug boss 3 under two parallel directive wheels 5 and spring 4 effects.Piezoelectric actuated 2,7 piezoelectric ceramic piece are used to excite the elastomeric horizontal beat mode of oscillation of motor; Piezoelectric actuated 8,10 piezoelectric ceramic piece are used to excite the elastomeric dipping and heaving mode of oscillation of motor.Guarantee during stickup that piezoelectric actuated 8, the polarised direction of 10 piezoelectric ceramic piece are (such as making progress) in the same way, guarantee that piezoelectric actuated 2, the polarised direction of 7 piezoelectric ceramic piece are incorgruous (such as 3 perpendicular to the adhesive surface directed outside, 4 point to perpendicular to adhesive surface inboard).The signal access way of excitation piezoelectric ceramic piece as shown in Figure 3.
Operation principle: the driving voltage signal A from high frequency alternation simple harmonic quantity waveform to piezoelectric ceramic piece and the B that apply.Phase difference is 90 degree between A phase and the B phase signals.The A phase signals can inspire the resonance vibration shape of the horizontal beat of motor; The B phase signals can inspire the resonance vibration shape of motor dipping and heaving.According to Theory of Vibration, these two vibration shapes are excited under same frequency, and two vibration phase mutual deviations 90 can synthesize the vibration of elliptical path when spending at the end (also being referred to as to drive the interface) of motor lug boss 8.So when motor and mover 10 are assembled together, and when keeping certain precompression, motor can drive the output of mover moving linearly.
Utilize the structure dynamic design, method for designing is general prior art (such as using finite element analysis and method for designing), can make the model frequency basically identical of satisfied two mode of oscillations (symmetric vibration mode and antisymmetric vibration mode) of physical dimension of motor.
Embodiment two:
Referring to Fig. 2, the structure of this triangle bended plate type piezoelectric straight line ultrasound electric motor is same as the previously described embodiments basically, institute's difference is that former mover becomes relative transfixion, and former stator is made linear translational motion, that is: stator is that line slideway (6) is supported by the directive wheel 5 of two band spring stabilizers 4 that be arranged in parallel above it, this line slideway 6 and base 11 relative horizontal location, mover is by three-pointed hollow star elastomer framework 1 and sticks on piezoelectric actuated 2 of its outer surface, 7,8,10 form, the triangular apex of this three-pointed hollow star elastomer framework 1 has the bottom surface of the described line slideway 6 of lug boss 3 conflicts, and there are clamper 9 sliding supports on its triangle base on base 11.Above-mentioned three-pointed hollow star elastomer framework 1 is a bulk line excision forming spare.
Claims (7)
1. a triangle bended plate type piezoelectric straight line ultrasound electric motor comprises stator and mover, it is characterized in that mover is line slideway (6), and the directive wheel (5) by two band spring stabilizers (4) that be arranged in parallel above it supports, and following by stator support; Described stator is made up of three-pointed hollow star elastomer framework (1) and piezoelectric actuated (2,7,8,10) sticking on its outer surface, there is the conflict bottom surface of described line slideway (10) of lug boss (3) at the triangular apex place of this three-pointed hollow star elastomer framework (1), and the midpoint on its triangle base has clamper (9) to fixedly connected with base (11).
2. triangle bended plate type piezoelectric straight line ultrasound electric motor according to claim 1 is characterized in that the member of described three-pointed hollow star elastomer framework (1) for carbon steel or duralumin, hard alumin ium alloy or copper, perhaps is composite element.
3. triangle bended plate type piezoelectric straight line ultrasound electric motor according to claim 1 is characterized in that described three-pointed hollow star elastomer framework (1) is the panel beating bent member, perhaps is the member of line cutting or stamping-out moulding.
4. triangle bended plate type piezoelectric straight line ultrasound electric motor according to claim 1, it is characterized in that described piezoelectric actuated (2,7,8,10) be upper and lower surface evenly apply galactic pole, along the piezoelectric ceramic piece of thickness direction polarization.
5. triangle bended plate type piezoelectric straight line ultrasound electric motor according to claim 4, the polarised direction that it is characterized in that two piezoelectric actuated (8,10) piezoelectric ceramic piece on the described triangle base outer surface that is pasted on three-pointed hollow star elastomer framework (1) is in the same way, and guarantees that the polarised direction of two piezoelectric actuated (2,7) piezoelectric ceramic piece on its triangle two hypotenuse outer surfaces is incorgruous.
6. triangle bended plate type piezoelectric straight line ultrasound electric motor according to claim 5, it is characterized in that encouraging piezoelectric actuated (2,7,8,10) signal of telecommunication access way of piezoelectric ceramic piece: on three-pointed hollow star elastomer framework (1) the triangle two hypotenuse outer surfaces two piezoelectric actuated (2,7) piezoelectric ceramic piece inserts excitation signal of telecommunication A, and on its triangle base outer surface two piezoelectric actuated (8,10) piezoelectric ceramic piece inserts excitation signal of telecommunication B, three-pointed hollow star elastomer framework (1) ground connection, phase difference is 90 degree between excitation signal of telecommunication A and the excitation signal of telecommunication B.
7. triangle bended plate type piezoelectric straight line ultrasound electric motor, comprise stator and mover, it is characterized in that mover is line slideway (6), the guide face wheel (5) by two band spring leaf legs (4) that be arranged in parallel above it supports this line slideway (6) and the relative horizontal location of base (11); Described stator is made up of three-pointed hollow star elastomer framework (1) and piezoelectric actuated (2,7,8,10) sticking on its outer surface, the triangular apex of this three-pointed hollow star elastomer framework (1) has the conflict bottom surface of described line slideway (6) of lug boss (3), and its triangle base has clamper (9) to be fixedly supported on the base (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710045921XA CN101119079B (en) | 2007-09-13 | 2007-09-13 | Triangle bended plate type piezoelectric straight line ultrasound electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710045921XA CN101119079B (en) | 2007-09-13 | 2007-09-13 | Triangle bended plate type piezoelectric straight line ultrasound electric motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101119079A true CN101119079A (en) | 2008-02-06 |
| CN101119079B CN101119079B (en) | 2010-06-30 |
Family
ID=39055051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710045921XA Expired - Fee Related CN101119079B (en) | 2007-09-13 | 2007-09-13 | Triangle bended plate type piezoelectric straight line ultrasound electric motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101119079B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101741277A (en) * | 2010-02-11 | 2010-06-16 | 宁波大学 | linear piezoelectric motor |
| CN102075111A (en) * | 2010-11-27 | 2011-05-25 | 上海大学 | Two-stroke compact type piezoelectric linear motor |
| CN101345494B (en) * | 2008-05-22 | 2012-01-04 | 上海交通大学 | Flexible actuating ultrasonic motor |
| CN102403924A (en) * | 2011-07-06 | 2012-04-04 | 南京航空航天大学 | Wear mitigation method of linear ultrasonic motor and linear ultrasonic motor |
| CN102497131A (en) * | 2011-12-16 | 2012-06-13 | 苏州市职业大学 | Actuator for linear type ultrasound motor |
| CN101753056B (en) * | 2008-12-15 | 2013-01-09 | 财团法人工业技术研究院 | Piezoelectric motor |
| CN103391028A (en) * | 2013-06-28 | 2013-11-13 | 西安交通大学 | Magnetism-piezoelectricity actuator based on triangular geometric displacement amplifying mechanism |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100511956C (en) * | 2005-12-07 | 2009-07-08 | 南京航空航天大学 | Linear motion stepping ultrasonic motor |
-
2007
- 2007-09-13 CN CN200710045921XA patent/CN101119079B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101345494B (en) * | 2008-05-22 | 2012-01-04 | 上海交通大学 | Flexible actuating ultrasonic motor |
| CN101753056B (en) * | 2008-12-15 | 2013-01-09 | 财团法人工业技术研究院 | Piezoelectric motor |
| CN101741277A (en) * | 2010-02-11 | 2010-06-16 | 宁波大学 | linear piezoelectric motor |
| CN101741277B (en) * | 2010-02-11 | 2011-11-23 | 宁波大学 | Linear piezoelectric motor |
| CN102075111A (en) * | 2010-11-27 | 2011-05-25 | 上海大学 | Two-stroke compact type piezoelectric linear motor |
| CN102075111B (en) * | 2010-11-27 | 2013-09-04 | 上海大学 | Two-stroke compact type piezoelectric linear motor |
| CN102403924A (en) * | 2011-07-06 | 2012-04-04 | 南京航空航天大学 | Wear mitigation method of linear ultrasonic motor and linear ultrasonic motor |
| CN102497131A (en) * | 2011-12-16 | 2012-06-13 | 苏州市职业大学 | Actuator for linear type ultrasound motor |
| CN103391028A (en) * | 2013-06-28 | 2013-11-13 | 西安交通大学 | Magnetism-piezoelectricity actuator based on triangular geometric displacement amplifying mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101119079B (en) | 2010-06-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101119079B (en) | Triangle bended plate type piezoelectric straight line ultrasound electric motor | |
| CN102868315A (en) | Paster-type bending vibration composite dual-feet ultrasound motor oscillator | |
| CN102931870B (en) | A kind of standing wave type linear ultrasonic motor | |
| CN111464070A (en) | Linear ultrasonic motor stator and electric excitation method thereof | |
| CN102412757A (en) | Cantilever-type piezoelectric generator with adjustable base frequency resonant frequency | |
| Liu et al. | A novel plate type linear piezoelectric actuator using dual-frequency drive | |
| CN103516251A (en) | Vertical-bending-twisting compound rotary type ultrasonic motor piezoelectric vibrator | |
| JPH07222467A (en) | Ultrasonic motor | |
| CN110299866A (en) | The accurate piezoelectric straight line mobile platform and operation mode of frame structure driving | |
| CN107968541B (en) | Linear vibration motor | |
| CN102868316A (en) | Paster-type dual-feet ultrasound motor oscillator | |
| CN101656489A (en) | Linear ultrasonic motor with V-shaped prism composite oscillator | |
| CN108429487B (en) | Horizontal plate type in-plane longitudinal-bending composite linear ultrasonic motor with small frequency difference and high efficiency | |
| CN102025286A (en) | Alternating force based linear ultrasonic motor | |
| CN210297571U (en) | Linear motor driven by laminated eight-rod piezoelectric stator | |
| CN103107734B (en) | Tubular piezoelectric vibrator | |
| CN107592029B (en) | Planar ultrasonic motor driven by tooth-shaped piezoelectric vibrator and working mode thereof | |
| US8611082B2 (en) | Storage device | |
| JPH0315278A (en) | Elastic vibrator in traveling bending vibration motor | |
| CN110601589A (en) | Linear motor driven by laminated eight-rod piezoelectric stator and operation mode | |
| CN113162463B (en) | Ultrasonic motor vibrator with plate-cantilever beam combined structure and excitation method thereof | |
| JP2012120370A (en) | Ultrasonic transducer and ultrasonic motor | |
| CN203193542U (en) | Tubular piezoelectric vibrator | |
| CN109862493B (en) | Vibrating element | |
| CN102684547B (en) | Composite metal ceramic tubular piezoelectric motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100630 Termination date: 20130913 |