CN106533257A - Ultrasonic motor with overhanging beam structure employing spring stator - Google Patents
Ultrasonic motor with overhanging beam structure employing spring stator Download PDFInfo
- Publication number
- CN106533257A CN106533257A CN201611101389.4A CN201611101389A CN106533257A CN 106533257 A CN106533257 A CN 106533257A CN 201611101389 A CN201611101389 A CN 201611101389A CN 106533257 A CN106533257 A CN 106533257A
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- Prior art keywords
- overhanging
- spring stator
- piezoelectric ceramics
- stator
- spring
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- 239000000919 ceramic Substances 0.000 claims abstract description 60
- 238000002604 ultrasonography Methods 0.000 claims description 23
- 238000005452 bending Methods 0.000 claims description 19
- 238000010276 construction Methods 0.000 claims description 18
- 230000005284 excitation Effects 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 5
- 230000010287 polarization Effects 0.000 claims description 5
- 229910052573 porcelain Inorganic materials 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 230000017525 heat dissipation Effects 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract 4
- 230000006872 improvement Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/10—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
- H02N2/16—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors using travelling waves, i.e. Rayleigh surface waves
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/10—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
- H02N2/12—Constructional details
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention discloses an ultrasonic motor with an overhanging beam structure employing a spring stator. The ultrasonic motor comprises a rotor, a stator, an overhanging beam and multiple pieces of piezoelectric ceramics, wherein the spring stator is adopted as the stator; the multiple pieces of piezoelectric ceramics include two sheets of A-phase piezoelectric ceramics and one sheet of B-phase piezoelectric ceramics; the spring stator is a segment of metal wire of which the section is in a square or round form and is wound around the rotor as the center axis according to a cylindrical spiral curve; the B-phase piezoelectric ceramics is fixed on one side, back to the spring stator, of the overhanging beam; the two sheets of A-phase piezoelectric ceramics are fixed on two opposite sides of the overhanging beam respectively and are adjacent to the B-phase piezoelectric ceramics; two ends of one side, opposite to the spring stator, of the overhanging beam are vertically fixed at two ends of the metal wire respectively; and a connection line between two ends of the metal wire extends along the axis direction of the rotor and the overhanging beam fixed at two ends of the metal wire is parallel to the axis of the rotor. The ultrasonic motor is beneficial to solving of a heat-dissipation problem of a cylindrical stator and beneficial to microminiaturization of the structure size.
Description
Technical field
The present invention relates to a kind of ultrasound electric machine, more particularly to a kind of spring stator ultrasound electric machine with overhanging girder construction.
Background technology
Ultrasound electric machine is a kind of inverse piezoelectric effect of utilization piezoelectric element, the resonance in elastomer ultrasound frequency domain and it is fixed, turn
Frictional drive between son realizes the New-type electric machine for activating output.Different from electromagnetic machine, ultrasound electric machine will directly be input into electric energy
Change into mechanical energy output, it is not necessary to coil, so not receiving magnetic interference, also do not produce magnetic field.In addition, ultrasound electric machine is also
Have the advantages that compact conformation, response are fast, control accuracy is high, energy density is big, rotating speed Low-torque is big and noise-less pollution.Size
In the Miniature ultrasonic motor of millimeter magnitude, due to more short and small frivolous structure, in minimally invasive medical, precision instrument and Aero-Space
Require that tightened up field has broad application prospects Deng to driver size.
Chinese patent literature discloses several Miniature ultrasonic motors, but they all use determining for tubulose or column structure
Son.Tubular stator is constrained due to the presence of mesopore；Although column stator can enter to stator
Row miniaturized design, but solid construction easily causes the problems such as radiating bad；Tubulose all uses similar clamping screw with column stator
Structure is assembled, and operation is more complicated, and very high to the requirement on machining accuracy of part.
The content of the invention
For above-mentioned technological deficiency, the present invention provides a kind of spring stator ultrasound electric machine with overhanging girder construction, and which has
Beneficial to the heat dissipation problem for solving post class stator, further, since spring stator structure is simply compact, it is more beneficial in physical dimension
Miniaturization.
The present invention solution be：A kind of spring stator ultrasound electric machine with overhanging girder construction, which includes rotor, determines
Son, overhanging beam, some piezoelectric ceramics；Stator adopts spring stator, the electroceramics to include two panels A phase piezoelectric ceramics and a piece of B phases
Piezoelectric ceramics；It is square or circular tinsel that the spring stator is one section of section, according to cylindrical screw curve with rotor being
Heart axis coiling is formed；B phase piezoelectric ceramics is fixed on overhanging beam and facing away from the side of the spring stator, two A phases piezoelectricity potteries
Porcelain is separately fixed in the opposite sides of overhanging beam and adjacent with B phase piezoelectric ceramics, and overhanging beam is facing to the spring stator one
The two ends of side are respectively and vertically fixed on the two ends wiry, axis direction of the line between the tinsel two ends along rotor
The overhanging beam for extending and making to be fixed on the tinsel two ends is parallel with the axis of rotor.
As the further improvement of such scheme, apply sin sinusoidal voltages in two panels A phase piezoelectric ceramics, make pottery in B phases piezoelectricity
Porcelain applies cos cosinusoidal voltages, overhanging beam ground connection；The inner surface of the spring stator is drive surface, for driving rotor to rotate, the bullet
Spring stator is excited, and superposition is formed and drives traveling wave.
Used as the further improvement of such scheme, B phases piezoelectric ceramics excites the spring stator to exist after applied voltage excitation
First-order bending vibration is produced in vertical direction；Two panels A phase piezoelectric ceramics after applied voltage excitation produces alternate tension and compression and stretches
Compression deformation, makes to excite the spring stator to produce first-order bending vibration in the horizontal direction.
Further, it is when applied voltage is encouraged for B phases piezoelectric ceramics and A phases piezoelectric ceramics simultaneously, same in the spring stator
When existence time and spatially phase place differ 90 ° of two first-order bending vibration mode, the now inner surface of the spring stator
Particle just with elliptical orbit move；The phase contrast for changing biphase excitation realizes that particle is rotated backward.
Used as the further improvement of such scheme, 90 degree of the tinsel bending two ends form the bearing of connection overhanging beam.
Further, overhanging beam is connected with the mode of the bearing screw on the spring stator or welding, and is ensured overhanging
Beam is parallel to each other with the central axis of the spring stator.
Used as the further improvement of such scheme, overhanging beam includes bar beam and two connections positioned at bar beam two ends
Arm, two linking arms extend to be separately fixed on the two ends wiry towards the two ends wiry respectively.
Further, the cross section of bar beam is rectangle, and the side fixation B phases that two linking arms are facing away from bar beam are pressed
Electroceramics, fixes two A phase piezoelectric ceramics respectively with two adjacent opposite sides of linking arm in bar beam.
Used as the further improvement of such scheme, two A phases piezoelectric ceramics are pasted onto using conducting resinl through silver-plated process
On overhanging beam.
As the further improvement of such scheme, the length of all piezoelectric ceramics and the equal length of overhanging beam, and edge
The thickness direction polarization of overhanging beam, the polarised direction of two A phase piezoelectric ceramics are identical.
Compared with the prior art, the present invention has the beneficial effect that：
1. first-order bending vibration mode is produced when the present invention makes spring stator work in two mutually orthogonal directions,
Superposition is formed and drives traveling wave, and the spring stator elasticity of flexure is very big, easily excites, and amplitude is larger；
2. the present invention is adopted and fixes piezoelectric ceramics by paster mode on overhanging beam, it is easy to which piezoelectric ceramics is pasted, processing；
3. the present invention by had using spring stator it is simple and compact for structure, be easy to microminaturization the characteristics of, spring is fixed
The size of son can reach below 1mm.
Description of the drawings
Fig. 1 is the dimensional structure diagram of spring stator ultrasound electric machine of the present invention with overhanging girder construction.
Front views of the Fig. 2 for Fig. 1.
Fig. 3 a are the entity variation diagram of piezoelectric ceramics polarization and on-load voltage.
Fig. 3 b are the curvilinear motion figure of piezoelectric ceramics polarization and on-load voltage.
Elliptic motion stereograms of Fig. 4 a for the particle of spring stator inner surface.
Elliptic motion curve charts of Fig. 4 b for the particle of spring stator inner surface
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, it is below in conjunction with drawings and Examples, right
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, and
It is not used in the restriction present invention.
Fig. 1 and Fig. 2 is seen also, the Design of Ultrasonic Motor of the present invention is a kind of spring stator with overhanging girder construction
Ultrasound electric machine.Ultrasound electric machine includes rotor 1, stator 2, overhanging beam 3, some piezoelectric ceramics.
Stator 2 adopts spring stator, and it is square or circular tinsel that the spring stator is one section of section, according to cylinder spiral shell
Rotation curve axis coiling centered on rotor 1 is formed, therefore, during work (following article introduction), spring stator mutually hangs down at two
First-order bending vibration mode is produced on straight direction, superposition is formed and drives traveling wave.
Electroceramics includes two panels A phase piezoelectric ceramics 4 and a piece of B phases piezoelectric ceramics 5.B phases piezoelectric ceramics 5 is fixed on overhanging beam
On 3 sides that facing away from the spring stator, two A phases piezoelectric ceramics 4 be separately fixed in the opposite sides of overhanging beam 3 and with
B phases piezoelectric ceramics 5 is adjacent.Two A phases piezoelectric ceramics 4 can be pasted onto on overhanging beam 3 using conducting resinl through silver-plated process.B phases
Piezoelectric ceramics 5 may also be employed conducting resinl and be pasted onto on overhanging beam 3, and piezoelectric ceramics can through-thickness polarization.3 face of overhanging beam
Two ends against the spring stator side are respectively and vertically fixed at the line on the two ends wiry, between the tinsel two ends
The overhanging beam 3 for extending and making to be fixed on the tinsel two ends along the axis direction of rotor 1 is parallel with the axis of rotor 1.
Incorporated by reference to Fig. 3 a, Fig. 3 b, Fig. 4 a and Fig. 4 b, the spring stator ultrasound electric machine base with overhanging girder construction of the present invention
In mode superposition method produce traveling wave, drive point be spring stator inner surface particle at formation elliptic motion.Spring stator
Inner surface as drive surface, rotor 1 can be driven to rotate.Along spring external stator periphery, axially connected one piece of rectangle is overhanging
Beam 3 is to paste piezoelectric ceramics.The B phases piezoelectric ceramics 5 for being pasted on 3 upper surface of overhanging beam excites spring after applied voltage excitation
Stator produces first-order bending vibration in vertical direction.The two panels A phase piezoelectric ceramics 4 for being pasted on 3 or so surface of overhanging beam is being applied
Alternate tension and compression and dilatation are produced after making alive excitation, is shaken so as to excite spring stator to produce first-order flexure in the horizontal direction
It is dynamic.When two-phase voltage is encouraged simultaneously, while existence time differs 90 ° of two single orders with spatially phase place in spring stator
Flexural vibration mode, now the particle of spring stator inner surface is just with elliptical orbit motion；The phase contrast for changing biphase excitation can
To realize that particle is rotated backward.
Overhanging beam 3 is fixed on the two ends of spring stator for convenience, flexible 90 degree of two ends wiry form connection
The bearing 6 of overhanging beam 3.Overhanging beam 3 can be connected with the mode of screw or welding with the bearing 6 on the spring stator, and ensure outer
Beam 3 is parallel to each other with the central axis of the spring stator.So, overhanging beam 3 can be fixed on 90 ° of spring stator two ends bung flange
At position, it is used for two pieces of connecting plates (two linking arms 32 i.e. hereafter) of connection on overhanging beam 3 positioned at spring stator two ends spiral shell
On the same straight line of circle.
Certainly, in other embodiments, it is also possible to be not provided with bearing 6, but identical mesh is realized by designing overhanging beam 3
's.Such as, overhanging beam 3 may include bar beam and two linking arms positioned at bar beam two ends, and two linking arms 32 are respectively towards the gold
The two ends of category silk extend to be separately fixed on the two ends wiry.The cross section of bar beam can be rectangle, carry on the back in bar beam
B phases piezoelectric ceramics 5 is fixed in side against two linking arms, solid respectively with two adjacent opposite sides of linking arm in bar beam
Fixed two A phases piezoelectric ceramics 4.Equal length of the length of all piezoelectric ceramics preferably with overhanging beam 3, and along overhanging beam 3
Thickness direction polarizes, and the polarised direction of two A phases piezoelectric ceramics 4 is identical.
In sum, stator 2 is designed to the present invention structure of spring stator, excites two vertically on spring stator
First-order bending vibration, the two flexural vibration modes be spatially it is vertical, when both encourage difference 90 degree of phase angles when,
The two bending vibrations are temporally alternately excited, and in spring stator form traveling wave.Traveling wave is formed such that in spring stator
Surface particle is in elliptic motion, rotor 1 can be driven to rotate, as shown in Fig. 3 a, Fig. 3 b, Fig. 4 a and Fig. 4 b.
The motivational techniques of biphase bending vibration are illustrated with reference to Fig. 3 a, Fig. 3 b.Along the one overhanging horizontal stroke of axial design of spring stator
It is that, using the Piezoelectric Ceramics Excitation bending vibration pasted thereon, three piezoelectric ceramics are divided into biphase that beam is the purpose of overhanging beam 3
Excitation, the B phases piezoelectric ceramics 5 in Fig. 1 separately as a phase, encourage upper and lower to bending vibration, the two panels A phase in Fig. 1 presses
Electroceramics 4 as one group, the bending vibration of common activation left and right directions.Apply sin sinusoidal voltages in two panels A phase piezoelectric ceramics 4；
Apply cos cosinusoidal voltages in B phases piezoelectric ceramics 5；Overhanging beam 3 is grounded.The polarised direction of piezoelectric ceramics and at a time electric field
Direction is as shown in Fig. 2 to protect exciting and replacing for biphase bending vibration.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of spring stator ultrasound electric machine with overhanging girder construction, which includes rotor (1), stator (2), some piezoelectricity pottery
Porcelain；It is characterized in that：Which also includes overhanging beam (3), and using spring stator, the electroceramics includes that two panels A phase piezoelectricity is made pottery to stator (2)
Porcelain (4) and a piece of B phases piezoelectric ceramics (5)；It is square or circular tinsel that the spring stator is one section of section, according to cylinder spiral shell
Rotation curve axis coiling centered on rotor (1) is formed；B phase piezoelectric ceramics (5) is fixed on overhanging beam (3) and facing away from the spring calmly
Son side on, two A phase piezoelectric ceramics (4) be separately fixed in the opposite sides of overhanging beam (3) and with B phase piezoelectric ceramics
(5) adjacent, overhanging beam (3) is respectively and vertically fixed on the two ends wiry facing to the two ends of the spring stator side, should
Line between tinsel two ends extends and makes the overhanging beam being fixed on the tinsel two ends along the axis direction of rotor (1)
(3) it is parallel with the axis of rotor (1).
2. the spring stator ultrasound electric machine of overhanging girder construction is carried as claimed in claim 1, it is characterised in that：In two panels A phase
Piezoelectric ceramics (4) applies sin sinusoidal voltages, applies cos cosinusoidal voltages, overhanging beam (3) ground connection in B phase piezoelectric ceramics (5)；The bullet
The inner surface of spring stator is drive surface, and for driving rotor (1) to rotate, the spring stator is excited in two mutually orthogonal directions
On produce first-order bending vibration mode, superposition is formed and drives traveling wave.
3. the spring stator ultrasound electric machine of overhanging girder construction is carried as claimed in claim 1, it is characterised in that：B phases piezoelectricity is made pottery
Porcelain (5) excites the spring stator to produce first-order bending vibration in vertical direction after applied voltage excitation；Two panels A phase piezoelectricity
Ceramic (4) after applied voltage excitation produce alternate tension and compression and dilatation, make to excite the spring stator to produce in the horizontal direction
Raw first-order bending vibration.
4. the spring stator ultrasound electric machine of overhanging girder construction is carried as claimed in claim 3, it is characterised in that：When B phase piezoelectricity
Ceramic (5) and A phase piezoelectric ceramics (4) while when applied voltage is encouraged, while existence time and spatially phase in the spring stator
Position differs 90 ° of two first-order bending vibration mode, and now the particle of the inner surface of the spring stator is just transported with elliptical orbit
It is dynamic；The phase contrast for changing biphase excitation realizes that particle is rotated backward.
5. the spring stator ultrasound electric machine of overhanging girder construction is carried as claimed in claim 1, it is characterised in that：The tinsel two
90 degree of end bending forms the bearing of connection overhanging beam (3).
6. the spring stator ultrasound electric machine of overhanging girder construction is carried as claimed in claim 5, it is characterised in that：Overhanging beam (3)
It is connected with the mode of the bearing screw on the spring stator or welding, and ensures the center of overhanging beam (3) and the spring stator
Axis is parallel to each other.
7. the spring stator ultrasound electric machine of overhanging girder construction is carried as claimed in claim 1, it is characterised in that：Overhanging beam (3)
Including bar beam and two linking arms positioned at bar beam two ends, two linking arms extend to divide towards the two ends wiry respectively
It is not fixed on the two ends wiry.
8. the spring stator ultrasound electric machine of overhanging girder construction is carried as claimed in claim 7, it is characterised in that：The horizontal stroke of bar beam
B phase piezoelectric ceramics (5) is fixed in rectangular cross-section, the side that two linking arms are facing away from bar beam, with two companies in bar beam
Connect the adjacent opposite sides of arm and fix two A phase piezoelectric ceramics (4) respectively.
9. the spring stator ultrasound electric machine of overhanging girder construction is carried as claimed in claim 1, it is characterised in that：Two A phases are pressed
Electroceramics (4) is pasted onto on overhanging beam (3) using conducting resinl through silver-plated process.
10. the spring stator ultrasound electric machine of overhanging girder construction is carried as claimed in claim 1, it is characterised in that：All piezoelectricity
The length of ceramics and the equal length of overhanging beam (3), and along the thickness direction polarization of overhanging beam (3), two A phase piezoelectric ceramics
(4) polarised direction is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611101389.4A CN106533257A (en) | 2016-12-05 | 2016-12-05 | Ultrasonic motor with overhanging beam structure employing spring stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611101389.4A CN106533257A (en) | 2016-12-05 | 2016-12-05 | Ultrasonic motor with overhanging beam structure employing spring stator |
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| Publication Number | Publication Date |
|---|---|
| CN106533257A true CN106533257A (en) | 2017-03-22 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611101389.4A Pending CN106533257A (en) | 2016-12-05 | 2016-12-05 | Ultrasonic motor with overhanging beam structure employing spring stator |
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| Country | Link |
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| CN (1) | CN106533257A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109525143A (en) * | 2018-11-29 | 2019-03-26 | 南京航空航天大学 | A kind of curved compound sheet ultrasound electric machine of diameter and its control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916610A (en) * | 2012-11-15 | 2013-02-06 | 沈阳大学 | Composite type ultrasonic motor |
| CN103095174A (en) * | 2013-01-25 | 2013-05-08 | 东南大学 | Hollow annular traveling wave ultrasonic motor |
| CN205336152U (en) * | 2016-01-07 | 2016-06-22 | 江苏紫金东方超声电机有限公司 | Ultrasound motor |
| CN205356186U (en) * | 2015-11-16 | 2016-06-29 | 南京航空航天大学 | Floor excitation formula displacement type longitrorse compound ultrasonic motor |
-
2016
- 2016-12-05 CN CN201611101389.4A patent/CN106533257A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916610A (en) * | 2012-11-15 | 2013-02-06 | 沈阳大学 | Composite type ultrasonic motor |
| CN103095174A (en) * | 2013-01-25 | 2013-05-08 | 东南大学 | Hollow annular traveling wave ultrasonic motor |
| CN205356186U (en) * | 2015-11-16 | 2016-06-29 | 南京航空航天大学 | Floor excitation formula displacement type longitrorse compound ultrasonic motor |
| CN205336152U (en) * | 2016-01-07 | 2016-06-22 | 江苏紫金东方超声电机有限公司 | Ultrasound motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109525143A (en) * | 2018-11-29 | 2019-03-26 | 南京航空航天大学 | A kind of curved compound sheet ultrasound electric machine of diameter and its control method |
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| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Dong Yinghui Inventor after: Fang Hui Inventor after: Gu Yachun Inventor after: Zhao Yanan Inventor before: Dong Yinghui Inventor before: Gu Yachun Inventor before: Fang Hui Inventor before: Zhao Yanan |
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Application publication date: 20170322 |