CN109004858A - A kind of piezo-electric motor - Google Patents
A kind of piezo-electric motor Download PDFInfo
- Publication number
- CN109004858A CN109004858A CN201710416239.0A CN201710416239A CN109004858A CN 109004858 A CN109004858 A CN 109004858A CN 201710416239 A CN201710416239 A CN 201710416239A CN 109004858 A CN109004858 A CN 109004858A
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- CN
- China
- Prior art keywords
- piezoelectric ceramics
- clamping device
- piezo
- foot
- electric motor
- 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.)
- Pending
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- 239000000919 ceramic Substances 0.000 claims abstract description 59
- 238000003780 insertion Methods 0.000 claims abstract description 3
- 230000037431 insertion Effects 0.000 claims abstract description 3
- 238000005452 bending Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000003068 static effect 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
-
- 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
- H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
-
- 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
- H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
- H02N2/04—Constructional details
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention discloses a kind of piezo-electric motors, it includes piezoelectric ceramics, clamping device, motor shell；Piezoelectric ceramics is fixed in motor shell by clamping device；The piezoelectric ceramics is rectangle piezoelectric ceramics；The electrode of piezoelectric ceramics set on one side there are four equal part, opposite another side are equipped with full electrode；The short side end of piezoelectric ceramics is equipped with column driving foot；The intermediate position of the short side end of piezoelectric ceramics is equipped with fluting corresponding with column driving foot；In the side insertion fluting of column driving foot；The clamping device is the U-shaped structure for applying two holding frames of component and left and right by pretightning force and forming；The outside of one of holding frame is equipped with distortion spring piece；Holding frame clamps two long sides of piezoelectric ceramics, and the clip position of holding frame, which is located at, deforms smaller or zero deformation position when piezoelectric ceramics is driven；Its overall structure is small and compact, long service life, and driving foot is shorter, and it is firm to be bonded, and clamping device is simple, and size is small.
Description
Technical field
The present invention relates to driving element technical fields, and in particular to a kind of piezo-electric motor.
Background technique
Piezo-electric motor as a kind of completely new driver, with low speed high torque, big static retention forces square, fast response time,
Small in volume, the resolution ratio of nanometer scale and the advantages that without magnetic interference by extensive concern both domestic and external, and in crowd
It is multi-field to be applied.In general, piezo-electric motor can be divided into linear piezoelectric motor and rotating piezoelectric motor.Linear piezoelectric
Mover in motor is for linear motion；Mover in rotating piezoelectric motor rotates.L1-B2 type piezo-electric motor is a kind of
Typical linear piezoelectric motor (see United States Patent (USP) US5877579), the vibrating elements of the motor are a rectangle piezoelectric ceramics, pottery
The one side of porcelain is full electrode, and another side is quartering electrode, ceramic through-thickness polarization.Longitudinal vibration of the motor operations in the first rank
The beam mode (B2) of dynamic model formula (L1) and second-order.When L1 and B2 are added in diagonal two electrodes while exciting,
Position generates elliptical standing wave among the end of ceramics, by the friction-driven driving mover movement enough for being bonded in the position.Work as vibration
When the dynamic excitation by another pair electrode, driving force is on the contrary, mover is moved towards other direction.This ceramic structure is simple, has larger
Thrust, applied in industry.The clamping device of piezoelectric ceramics how is designed when manufacturing L1B2 piezo-electric motor, side
Just pretightning force applying mechanism and reliable friction-driven foot structure, micromation integrally-built for piezo-electric motor and motor
The raising of energy is most important.
Summary of the invention
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of simple structure and reasonable design, make
With convenient piezo-electric motor, overall structure is small and compact, long service life, and driving foot is shorter, and it is firm to be bonded, clamping device letter
Single, size is small.
To achieve the above object, the technical solution adopted by the present invention is that: it include piezoelectric ceramics, clamping device, motor shell
Body；Piezoelectric ceramics is fixed in motor shell by clamping device；The piezoelectric ceramics is rectangle piezoelectric ceramics；Piezoelectricity pottery
The electrode of porcelain set on one side there are four equal part, opposite another side are equipped with full electrode；The short side end of piezoelectric ceramics is equipped with column
Driving foot；The intermediate position of the short side end of piezoelectric ceramics is equipped with fluting corresponding with column driving foot；The one of column driving foot
In side insertion fluting；The clamping device is the U-shaped structure for applying two holding frames of component and left and right by pretightning force and forming；Its
In a holding frame outside be equipped with distortion spring piece；Holding frame clamps two long sides of piezoelectric ceramics, the clamping of holding frame
Position, which is located at, deforms smaller or zero deformation position when piezoelectric ceramics is driven；
Preferably, column driving foot is cylindrical drive foot；Fluting is arc-shaped fluting；The side of cylindrical drive foot
A part be embedded in arc-shaped fluting；Two end faces of cylindrical drive foot and piezoelectric ceramics upper and lower surface are substantially flush；
Preferably, it is the cylindricality driving foot that 3 right-angle sides and a circular arc are constituted that column driving foot, which is end face,；Fluting is length
Rectangular fluting；In a part of embedded groove of 3 right-angle side sides of cylindricality driving foot；The positive cross-notching bottom of cylindricality arc surface and
Driven sliding block connects；
Preferably, the clamping device be can bending integral structure；
Preferably, the inner wall of the motor shell and the contact site of clamping device are pasted with the thin slice for reducing coefficient of friction；
Preferably, the quantity of the piezoelectric ceramics is a pair；Two piezoelectric ceramics are respectively provided in two clamping devices, and two
Clamping device side-by-side horizontal is arranged in motor shell；The middle position that the pretightning force of two clamping devices applies component end is equipped with
Prefastening force spring piece；The both ends of the prefastening force spring piece application pretightning force component contact with two clamping devices respectively；Pretightning force
The intermediate position of spring leaf is equipped with eccentric pin；
Preferably, the quantity of the piezoelectric ceramics is several right；Piezoelectric ceramics is respectively provided in corresponding clamping device；It is several
Clamping device horizontal Tile or stacked on top are arranged in motor shell；The pretightning force of each pair of clamping device applies component end
It is equipped with a prefastening force spring piece and eccentric pin.
After adopting the above structure, the invention has the following beneficial effects: a kind of piezo-electric motor of the present invention, overall structure it is small and
Compact, long service life, driving foot is shorter, and it is firm to be bonded, and clamping device is simple, and size is small, and, setting simple with structure is closed
The advantages that reason, low manufacture cost.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is piezoelectric ceramics scheme of installation；
Fig. 3 is the structural schematic diagram of piezoelectric ceramics；
Fig. 4 is the structural schematic diagram of clamping device；
Fig. 5 is the structural schematic diagram of electricity driving displacement platform.
Description of symbols:
1, eccentric pin；2, prefastening force spring piece；3, clamping device；4, motor shell；5, piezoelectric ceramics；6, thin slice；7, slide unit；
8, piezo-electric motor；9, pedestal；3-1, holding frame；3-2, clip position；3-3, distortion spring piece；3-4, pretightning force apply component；
5-1, driving foot；The electrode of 5-2, four equal parts；5-3, long side；7-1, linear slider；7-2, driving piece.
Specific embodiment
With reference to the accompanying drawing, the present invention is further illustrated.
Referring to shown in Fig. 1-4, present embodiment the technical solution adopted is that: it includes piezoelectric ceramics 5, clamping device
3, motor shell 4；Piezoelectric ceramics 5 is fixed in motor shell 4 by clamping device 3；The piezoelectric ceramics 5 is rectangle pressure
Electroceramics；The electrode 5-2 of piezoelectric ceramics 5 set on one side there are four equal part, opposite another side are equipped with full electrode；Piezoelectric ceramics 5
Short side end be equipped with cylindrical drive foot 5-1；The intermediate position of the short side end of piezoelectric ceramics 5 is equipped with and cylindrical drive foot
Corresponding arc-shaped fluting；The side of cylindrical drive foot 5-1 is embedded in and is pasted onto arc-shaped fluting, and the opposite other side is then
It is contacted with by driving linear slider 7-1；Two end faces of cylindrical drive foot 5-1 and 5 upper and lower surface of piezoelectric ceramics are substantially flush；
The clamping device 3 is the U-shaped structure for applying two holding frame 3-1 of component 3-4 and left and right by pretightning force and forming；One of them
The outside of holding frame is equipped with distortion spring piece 3-3；Holding frame 3-1 clamps the two long side 5-3, holding frame 3-1 of piezoelectric ceramics
Clip position be located at when piezoelectric ceramics 5 is driven that deformation is smaller or the position of zero deformation；
Cylindrical drive foot 5-1 is made of wear-resistant material, and wear-resistant material can be ceramics or other cemented carbide materials；Driving
Foot can also drive foot for the column of other shapes；
A holding frame is contacted with the inner wall of motor shell 4 in clamping device 3, another holding frame passes through distortion spring piece 3-3
It is contacted with the inner wall of shell；Distortion spring piece 3-3 is made by being placed in motor shell 4 after being squeezed and deformed to 5 direction of piezoelectric ceramics
Piezoelectric ceramics 5 not will shake left and right；
The pretightning force of clamping device 3 apply two holding frame 3-1 of component 3-4 and left and right can be made into each other can bending integral type
Structure；Clamping device 3, which is adopted, to be made from an insulative material, such as plastics；
It, can be in the inner wall and clamping device 3 of motor shell 4 to reduce the frictional force between clamping device 3 and the inner wall of motor shell 4
Contact site be pasted with reduce coefficient of friction thin slice 6, such as using plastic adhesive tape be pasted on the inner wall of motor shell or
It is grease-added on inner wall, to reduce the frictional force of contact position；
The quantity of piezoelectric ceramics 5 is a pair, and two piezoelectric ceramics 5 are respectively provided in two clamping devices 3, two clampings dresses
3 side-by-side horizontals are set to be arranged in motor shell 4；The middle position that the pretightning force of two clamping devices applies the end component 3-4 is equipped with
Prefastening force spring piece 2；The both ends of prefastening force spring piece 2 are contacted with the application pretightning force component 3-4 of two clamping devices respectively；Pressure
Driving foot 5-1 must apply on certain pressure (pretightning force) to driven linear slider 7-1 when electric notor 8 works；Pretightning force
The intermediate position of spring leaf 2 is equipped with eccentric pin 1；Eccentric pin 1 is deformed prefastening force spring piece 2 when rotating to generate pressure
Pretightning force needed for electric notor 8；Since eccentric pin 1 is in 2 middle position of prefastening force spring piece, on two piezoelectric ceramics 5
The pretightning force of generation is approximately equal.
For the thrust for increasing piezo-electric motor, the quantity of piezoelectric ceramics 5 is incessantly a pair of, and piezoelectric ceramics 5 is respectively provided at accordingly
In clamping device 3；It is arranged in motor shell 4 to several pairs of 3 horizontal Tiles of clamping device or stacked on top；Each pair of clamping device 3
Pretightning force apply component end and share prefastening force spring piece 2 and apply pretightning force.
Referring to shown in Fig. 5, piezo-electric motor 8 and slide unit 7 constitute electricity driving displacement platform；Slide unit 7 is equipped with linear slider 7-1；Directly
The side of line sliding block 7-1 is pasted with wear-resisting driving piece 7-2；The column driving foot of piezo-electric motor 8 and driving piece 7-2 contact, drive
Dynamic linear slider 7-1 is for linear motion；Piezo-electric motor 8 and slide unit 7 are mounted on same pedestal 9.
The above is only used to illustrate the technical scheme of the present invention and not to limit it, and those of ordinary skill in the art are to this hair
The other modifications or equivalent replacement that bright technical solution is made, as long as it does not depart from the spirit and scope of the technical scheme of the present invention,
It is intended to be within the scope of the claims of the invention.
Claims (6)
1. a kind of piezo-electric motor, it is characterised in that it includes piezoelectric ceramics, clamping device, motor shell；Piezoelectric ceramics passes through folder
Device is held to be fixed in motor shell；The piezoelectric ceramics is rectangle piezoelectric ceramics；There are four the setting on one side of piezoelectric ceramics
The electrode of equal part, opposite another side are equipped with full electrode；The short side end of piezoelectric ceramics is equipped with column driving foot；Piezoelectric ceramics
The intermediate position of short side end is equipped with fluting corresponding with column driving foot；In the side insertion fluting of column driving foot；It is described
Clamping device be to apply component and the U-shaped structure that forms of two holding frames in left and right by pretightning force；Outside one of holding frame
Side is equipped with distortion spring piece；Holding frame clamps two long sides of piezoelectric ceramics, and the clip position of holding frame is located at piezoelectric ceramics
Smaller or zero deformation position is deformed when being driven.
2. a kind of piezo-electric motor according to claim 1, it is characterised in that the column driving foot is cylindrical drive
Foot；Fluting is arc-shaped fluting；A part of the side of cylindrical drive foot is embedded in arc-shaped fluting；Cylindrical drive foot
Two end faces and piezoelectric ceramics upper and lower surface are substantially flush.
3. a kind of piezo-electric motor according to claim 1, it is characterised in that it is 3 straight that the column driving foot, which is end face,
The cylindricality that the arm of angle and a circular arc are constituted drives foot；Fluting is that rectangle is slotted；One of 3 right-angle side sides of cylindricality driving foot
Divide in embedded groove；The positive cross-notching bottom of cylindricality arc surface.
4. a kind of piezo-electric motor according to claim 1, it is characterised in that the clamping device be can bending one
Formula structure.
5. a kind of piezo-electric motor according to claim 1, it is characterised in that the inner wall of the motor shell and clamping fill
The contact site set is pasted with the thin slice for reducing coefficient of friction.
6. a kind of piezo-electric motor according to claim 1, it is characterised in that the quantity of the piezoelectric ceramics is a pair；Two
A piezoelectric ceramics is respectively provided in two clamping devices, and two clamping device side-by-side horizontals are arranged in motor shell；Two folders
The pretightning force for holding device applies the middle position of component end equipped with prefastening force spring piece；The both ends of prefastening force spring piece are respectively with two
The application pretightning force component contact of a clamping device；The intermediate position of prefastening force spring piece is equipped with eccentric pin.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710416239.0A CN109004858A (en) | 2017-06-06 | 2017-06-06 | A kind of piezo-electric motor |
| PCT/CN2018/080534 WO2018223751A1 (en) | 2017-06-06 | 2018-03-26 | Piezoelectric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710416239.0A CN109004858A (en) | 2017-06-06 | 2017-06-06 | A kind of piezo-electric motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109004858A true CN109004858A (en) | 2018-12-14 |
Family
ID=64565704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710416239.0A Pending CN109004858A (en) | 2017-06-06 | 2017-06-06 | A kind of piezo-electric motor |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109004858A (en) |
| WO (1) | WO2018223751A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112165274A (en) * | 2020-09-24 | 2021-01-01 | 南京工程学院 | Longitudinal-bending coupling type linear ultrasonic motor based on homodromous eccentric stator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664552A (en) * | 2012-05-10 | 2012-09-12 | 南京航空航天大学 | Double drive-feet rectangular piezoelectric plate type linear ultrasonic motor |
| CN203387431U (en) * | 2013-08-14 | 2014-01-08 | 金陵科技学院 | Single-driving-foot plate-shaped piezoelectric motor characterized by dual-mode and antifriction driving |
| CN104124891A (en) * | 2014-07-25 | 2014-10-29 | 北京派和科技股份有限公司 | Piezoelectric vibrator and precise displacement platform comprising same |
| CN105071686A (en) * | 2015-07-17 | 2015-11-18 | 南京航空航天大学 | Symmetrical double-feet driving offresonance piezoelectric linear motor |
| CN105236349A (en) * | 2015-10-20 | 2016-01-13 | 天津大学 | Piezoelectric-driven high-precision lead clamp |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19648726C2 (en) * | 1996-11-12 | 2003-03-27 | Piezosystem Jena Gmbh | Piezoelectric drive element |
| JP4327268B2 (en) * | 1998-06-01 | 2009-09-09 | セイコーインスツル株式会社 | Ultrasonic motor and electronic device with ultrasonic motor |
| JP5929139B2 (en) * | 2011-12-06 | 2016-06-01 | セイコーエプソン株式会社 | Actuator, robot hand, robot, electronic component transport device, electronic component inspection device, and printer |
| JP6268999B2 (en) * | 2013-12-06 | 2018-01-31 | セイコーエプソン株式会社 | Piezoelectric motor, robot hand, robot, finger assist device, electronic component transport device, electronic component inspection device, liquid feed pump, printing device, electronic clock, projection device |
| JP6269223B2 (en) * | 2014-03-24 | 2018-01-31 | セイコーエプソン株式会社 | Piezoelectric motor |
| KR20150114685A (en) * | 2014-04-02 | 2015-10-13 | 이인호 | Piezo Actuator |
-
2017
- 2017-06-06 CN CN201710416239.0A patent/CN109004858A/en active Pending
-
2018
- 2018-03-26 WO PCT/CN2018/080534 patent/WO2018223751A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664552A (en) * | 2012-05-10 | 2012-09-12 | 南京航空航天大学 | Double drive-feet rectangular piezoelectric plate type linear ultrasonic motor |
| CN203387431U (en) * | 2013-08-14 | 2014-01-08 | 金陵科技学院 | Single-driving-foot plate-shaped piezoelectric motor characterized by dual-mode and antifriction driving |
| CN104124891A (en) * | 2014-07-25 | 2014-10-29 | 北京派和科技股份有限公司 | Piezoelectric vibrator and precise displacement platform comprising same |
| CN105071686A (en) * | 2015-07-17 | 2015-11-18 | 南京航空航天大学 | Symmetrical double-feet driving offresonance piezoelectric linear motor |
| CN105236349A (en) * | 2015-10-20 | 2016-01-13 | 天津大学 | Piezoelectric-driven high-precision lead clamp |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112165274A (en) * | 2020-09-24 | 2021-01-01 | 南京工程学院 | Longitudinal-bending coupling type linear ultrasonic motor based on homodromous eccentric stator |
| CN112165274B (en) * | 2020-09-24 | 2021-11-30 | 南京工程学院 | Longitudinal-bending coupling type linear ultrasonic motor based on homodromous eccentric stator |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018223751A1 (en) | 2018-12-13 |
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Application publication date: 20181214 |
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