CN102684547A - Composite metal ceramic tubular piezoelectric motor - Google Patents
Composite metal ceramic tubular piezoelectric motor Download PDFInfo
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- CN102684547A CN102684547A CN2011100617031A CN201110061703A CN102684547A CN 102684547 A CN102684547 A CN 102684547A CN 2011100617031 A CN2011100617031 A CN 2011100617031A CN 201110061703 A CN201110061703 A CN 201110061703A CN 102684547 A CN102684547 A CN 102684547A
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- 239000000919 ceramic Substances 0.000 title claims abstract description 78
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 42
- 239000002184 metal Substances 0.000 title claims abstract description 42
- 239000002131 composite material Substances 0.000 title claims abstract description 12
- 230000007704 transition Effects 0.000 claims description 5
- 230000010287 polarization Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The invention discloses a composite metal ceramic tubular piezoelectric motor, which relates to a minisize piezoelectric ceramic motor and provides a linear piezoelectric motor with low voltage drive and large thrust. The composite metal ceramic tubular piezoelectric motor comprises a stator and electrodes arranged on the surfaces of piezoelectric ceramic plates and is characterized in that the stator is provided with a metal tube, a piezoelectric ceramic component and a drive foot; wherein the metal tube is a quadrangle column tube, the piezoelectric ceramic component is provide with four piezoelectric ceramic plates which are provided with an electrode respectively, the polarization direction of the piezoelectric ceramic plates are along the thickness direction, and the four piezoelectric ceramic plates are respectively fixed at one of four sides of the metal tube; and the drive foot is fixed on one of the four piezoelectric ceramic plates or on one of four edges of the metal tube.
Description
Technical field
The invention belongs to the piezoelectric applied technical field, relate to a kind of miniature piezo-ceramic motor.
Background technology
Piezo-electric motor is as a kind of brand-new driver; With low speed high torque, big static holding torque, response speed is fast, volume is little in light weight; The resolution of nanometer scale and do not have advantages such as magnetic interference and receive extensive concern both domestic and external, and obtained application in various fields.Usually, piezo-electric motor can be divided into linear piezoelectric motor and rotating piezoelectric motor.Mover moving linearly in the linear piezoelectric motor; Mover in the rotating piezoelectric motor rotates.Generally speaking, under the situation of equal thrust, people hope further to improve the efficient of motor, reduce the piezo-electric motor driving voltage and reduce the piezo-electric motor size, so that piezo-electric motor can be applied to more occasions.
U.S. Pat 5877579 discloses a kind of typical linear piezoelectric motor formula L1-B2 type motor, and the vibrating elements of this motor is a rectangle piezoelectric ceramic.The one side of pottery is full electrode, and another side is a quartering electrode, and pottery polarizes along thickness direction.Motor operations is at the compressional vibration pattern (L1) on first rank and the beam mode (B2) on second rank.When L1 and B2 are added in two electrodes in diagonal angle and excite simultaneously, produce oval standing wave in the middle part, end of pottery, drive the mover motion by the brake pad that is bonded in this position.When vibration was excited electrode by another, actuating force was opposite, and mover moves towards other direction.Though this motor configuration is simple, ceramic size is thicker, needs bigger voltage could form certain Oscillation Amplitude in the end and drives the mover motion.In addition, the efficient of motor is not high yet, and it is more serious to generate heat, can only intermittent work under high capacity.
U.S. Pat 6940209 discloses a kind of ceramet multiple tube motor, and the stator of this motor is made up of a metal tube and four piezoelectric ceramic, and four pieces of potteries are pasted on the outer surface of metal tube along vertical symmetry of pipe.Pottery is along thickness direction polarization, two potteries of right opposite and metal tube formation pair of electrodes.When two pairs of electrodes apply respectively phase difference be 90 the degree certain high frequency electrical signal the time, will get the motion (Wobbling) of shaking the head that two ends produce a kind of similar " hula hoop " at multiple tube.Inboard, two ends at metal tube is processed with screw thread.Rotor is being threaded of a screw shaped metal and stator two ends, when shaking the head of stator work " hula hoop " moved, can drive rotor and do the twisted linear motion.Though this design can be made the less motor of size, and being connected between stable stator and rotor, complex structure, motor thrust is limited.
Summary of the invention
The purpose of this invention is to provide a kind of low voltage drive that has, linear piezoelectric pottery motor---the metal-ceramic composite tube shape piezo-electric motor of high thrust.
The present invention includes stator and the electrode of being located at the piezoelectric ceramic surface, it is characterized in that stator is provided with metal tube, piezo ceramic element and driving foot; Metal tube is the square column jecket; Piezo ceramic element is provided with 4 piezoelectric ceramic; 4 piezoelectric ceramic are equipped with electrode, and the polarised direction of piezoelectric ceramic is along thickness direction, and 4 piezoelectric ceramic are fixed in 1 side in 4 sides of metal tube respectively; Drive foot and be fixed on wherein 1 piezoelectric ceramic in 4 piezoelectric ceramic, or be fixed on 1 seamed edge in 4 seamed edges of metal tube.
Said metal tube is preferably square or positive square column jecket, and 4 seamed edges of metal tube are preferably the seamed edge of plane transition, or are the seamed edge of arc transition.
Said 4 piezoelectric ceramic are identical rectangle sheet piezoelectric ceramic.
Said 4 piezoelectric ceramic are fixed in 1 side in 4 sides of metal tube respectively, be 4 piezoelectric ceramic respectively symmetry be pasted on 1 side in 4 sides of metal tube.
The said electrode of being located at the piezoelectric ceramic surface is to be coated on the piezoelectric ceramic full electrode on two surfaces up and down.
Also be provided with holder and elastic component on the said stator, holder is clamped on the stator, and elastic component is connected with holder.Holder is clamped in the node location place of stator, can avoid influencing the vibration of stator like this, and the effect of flexure strip is to apply pretightning force in driving on the foot, plays the effect of fixed stator simultaneously.
Said driving foot is fixed on 1 piezoelectric ceramic in 4 piezoelectric ceramic; Or be fixed on 1 seamed edge in 4 seamed edges of metal tube; Be to drive foot to be fixed on the centre position of 1 piezoelectric ceramic in 4 piezoelectric ceramic, or be on 1 the seamed edge centre position that is fixed in 4 seamed edges of metal tube.
Compare with existing linear piezoelectric pottery motor, the present invention has following outstanding advantage:
During use, when applying certain high frequency electrical signal, can produce the shake the head motion (Wobbling) or the standing wave motion of a kind of similar " hula hoop " in the middle part of metal tube through the electrode pair piezoelectric ceramic.The driving foot that is positioned at this position is then done elliptic motion, and drive foot and just drive with it touches and moved by actuator (like slide block), thus realization driving function.The present invention has simple in structure and undersized outstanding advantage, can adopt thin piezoelectric ceramic simultaneously, can realize low voltage drive and high thrust work.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1.
Fig. 2 is the polarization and the electric type of drive sketch map of the embodiment of the invention 1.
Fig. 3 is the structural representation of the embodiment of the invention 2.
Fig. 4 is the structural representation of the embodiment of the invention 3.
Fig. 5 is the STRUCTURE DECOMPOSITION sketch map of Fig. 4.
Fig. 6 is the structural representation of the embodiment of the invention 4.
Fig. 7 is the STRUCTURE DECOMPOSITION sketch map of Fig. 6.
Scheme of installation when Fig. 8 uses for the present invention.
Fig. 9 is the sketch map that the present invention is used to drive the slide block moving linearly of being located on the guide rail.
Embodiment
Embodiment 1
Referring to Fig. 1 and 2, stator is provided with metal tube 101, piezoelectric ceramic 102 (4), driving foot 103 and electrode (two pairs).Metal tube 101 cross sections are positive square, and 4 seamed edges 1011 of metal tube 101 are facet transition seamed edge, can lower the rigidity of metal tube 101, and metal tube 101 centre bore labels are 1010.High strength epoxy resin 1 piezoelectric ceramic 102 of symmetry stickup is respectively adopted in 4 sides of metal tube 101.Drive foot 103 and be located on 1 seamed edge 1011 of metal tube 101, drive foot 103, process like aluminium oxide ceramics, carbide alloy etc. generally by high-abrasive material.Two surfaces up and down of piezoelectric ceramic 102 are full electrode, along the thickness direction polarization, shown in Fig. 2 arrow.The polarised direction of wherein a pair of adjacent 2 piezoelectric ceramic 102 is identical, promptly point to the stator outside, and another polarised direction to adjacent 2 piezoelectric ceramic 102 is opposite, promptly points to the stator inboard.Stator is by the power drives of exportable two groups of certain frequencies and phase difference, and output waveform can be sine wave, square wave, triangular wave, or other waveforms.By shown in Figure 2.Existing is example with the sine wave signal, inserts pumping signal Vsin ω t, other pair of electrodes access Vcos ω t therein on the pair of electrodes, forms two pairs of AC driving signals with 90 ° of phase differences thus.When direction of an electric field was consistent with polarised direction, piezoelectric ceramic shortened along polarised direction (thickness direction) elongation simultaneously along its length, otherwise piezoelectric ceramic shortens along polarised direction (thickness direction), simultaneously elongation along its length.Because the drive voltage signal of input is two group pulse signals with 90 ° of phase differences; So stator produces alternately deformation on the both direction of quadrature; And finally make bonding driving foot 103 do the elliptical orbit motion, drive foot 103 and drive simultaneously by actuator (, not drawing among Fig. 1 and 2) like slide block.If two groups of power supplys switch each other, then will be moved in the opposite direction by actuator.Stator also can be driven by single phase poaer supply, and stator will vibrate along the normal direction of a pair of piezoelectric ceramic that applies drive signal like this, and drives by actuator (mover) towards a direction motion.When power supply puts on another to the piezoelectric ceramic pottery, will be moved to another way by actuator (mover).
Embodiment 2
Referring to Fig. 3, similar with embodiment 1, difference is, drives the surperficial centre position that foot 103 is located at 1 piezoelectric ceramic 102 in 4 piezoelectric ceramic 102.Operation principle is identical.All the other labels among Fig. 3 are corresponding consistent with embodiment 1.
Embodiment 3
Referring to Figure 4 and 5, similar with embodiment 2, difference is, also is provided with holder 100 and elastic component 104 on the stator, and gripping member 100 is bonding with piezoelectric ceramic 102, and elastic component 104 is bonding with holder 100.Bonding employing epoxy resin.Bonding stator, holder 100 and the elastic component 104 of making is integrally formed the formula structure.The effect of elastic component 104 is to apply pretightning force in driving on the foot 103 through holder 100, plays the effect of fixed stator simultaneously.Elastic component 104 is a spring leaf.Holder 100 is clamped in the node location place of stator, and other positions of stator do not contact with spring leaf 104, can not influence the vibration of stator like this.The vibration mode that is adopted is depended in the position of node, and as adopting the first-order bending vibration pattern, the position of node is positioned at 0.224 λ place, end, and λ is the length of metal tube 101.Like the length of piezoelectric ceramic 102 length less than metal tube 101, node location can depart from, and can draw node location through Theoretical Calculation or experiment.In order to save the space, spring leaf 104 also can be parallel to the length direction of stator and install.
Embodiment 4
Referring to Fig. 6 and 7, similar with embodiment 3, difference is that the reconfiguration of embodiment 3 described holders 100 (like Fig. 4 and shown in Figure 5) is stator cover 106, can conveniently install and simplify shape of spring plate like this.Stator cover 106 is fastened in (dismantled and assembled) on the stator, and spring leaf 107 bottoms are overlapped 106 upper surface inlaid types with stator and are connected (dismantled and assembled).All the other labels among Fig. 6 and 7 are corresponding consistent with embodiment 3.
Referring to Fig. 8, when the present invention uses, stator (among Fig. 8 be example with embodiment 3 said stators) is positioned in the housing; Housing is provided with base 301 and lid 302; Be provided with motor standing groove 3010 in the base 301, stator places in the motor standing groove 3010, and lid 302 is fixed on the base 301 through trip bolt 303.All the other labels among Fig. 8 are corresponding consistent with embodiment 3.
Referring to Fig. 9, the piezo-electric motor 400 that is installed in the housing is connected through the slide block 602 on driving foot 103 and being located at linear guides 601, so just can drive slide block 602 (by actuator) moving linearly.Thereby piezo-electric motor 400 has been realized the driving function.Label 104 is a spring leaf.
Claims (7)
1. a metal-ceramic composite tube shape piezo-electric motor comprises stator and the electrode of being located at the piezoelectric ceramic surface, it is characterized in that stator is provided with metal tube, piezo ceramic element and driving foot; Metal tube is the square column jecket; Piezo ceramic element is provided with 4 piezoelectric ceramic; 4 piezoelectric ceramic are equipped with electrode, and the polarised direction of piezoelectric ceramic is along thickness direction, and 4 piezoelectric ceramic are fixed in 1 side in 4 sides of metal tube respectively; Drive foot and be fixed on wherein 1 piezoelectric ceramic in 4 piezoelectric ceramic, or be fixed on 1 seamed edge in 4 seamed edges of metal tube.
2. a kind of metal-ceramic composite tube shape piezo-electric motor as claimed in claim 1 is characterized in that said metal tube is positive square column jecket, 4 seamed edges that seamed edge is the plane transition of metal tube, or be the seamed edge of arc transition.
3. a kind of metal-ceramic composite tube shape piezo-electric motor as claimed in claim 1 is characterized in that said 4 piezoelectric ceramic are identical rectangle sheet piezoelectric ceramic.
4. a kind of metal-ceramic composite tube shape piezo-electric motor as claimed in claim 1; It is characterized in that said 4 piezoelectric ceramic are fixed in 1 side in 4 sides of metal tube respectively, be 4 piezoelectric ceramic respectively symmetry be pasted on 1 side in 4 sides of metal tube.
5. a kind of metal-ceramic composite tube shape piezo-electric motor as claimed in claim 1 is characterized in that the said electrode of being located at the piezoelectric ceramic surface is to be coated on the piezoelectric ceramic full electrode on two surfaces up and down.
6. a kind of metal-ceramic composite tube shape piezo-electric motor as claimed in claim 1 is characterized in that also being provided with holder and elastic component on the said stator, and holder is clamped on the stator, and elastic component is connected with holder.
7. a kind of metal-ceramic composite tube shape piezo-electric motor as claimed in claim 1; It is characterized in that said driving foot is fixed on 1 piezoelectric ceramic in 4 piezoelectric ceramic; Or be fixed on 1 seamed edge in 4 seamed edges of metal tube; Be to drive the centre position that foot is fixed in 1 piezoelectric ceramic in 4 piezoelectric ceramic, or be 1 the seamed edge centre position that is fixed in 4 seamed edges of metal tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110061703.1A CN102684547B (en) | 2011-03-14 | 2011-03-14 | Composite metal ceramic tubular piezoelectric motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110061703.1A CN102684547B (en) | 2011-03-14 | 2011-03-14 | Composite metal ceramic tubular piezoelectric motor |
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| CN102684547A true CN102684547A (en) | 2012-09-19 |
| CN102684547B CN102684547B (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110061703.1A Active CN102684547B (en) | 2011-03-14 | 2011-03-14 | Composite metal ceramic tubular piezoelectric motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467517A (en) * | 2014-11-03 | 2015-03-25 | 孙亚飞 | Piezoelectric composite pipe driving device and manufacturing method for piezoelectric composite pipe driving device |
| CN115211024A (en) * | 2019-12-16 | 2022-10-18 | 艾科威公司 | Electromechanical actuator with composite drive pad |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5453653A (en) * | 1993-07-09 | 1995-09-26 | Nanomotion Ltd. | Ceramic motor |
| CN1633022A (en) * | 2004-12-24 | 2005-06-29 | 清华大学 | In-plane Vibration Linear Ultrasonic Motor of Piezoelectric Ceramic Metal Composite Plate |
| CN2847685Y (en) * | 2005-04-08 | 2006-12-13 | 清华大学 | Grooved metal square colume piezoelectric sheet composite supersonic micro motor |
| US20070029898A1 (en) * | 2005-08-08 | 2007-02-08 | Samsung Electro-Mechanics Co., Ltd. | Stator and ceramic tube type ultrasonic motor using the same |
-
2011
- 2011-03-14 CN CN201110061703.1A patent/CN102684547B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5453653A (en) * | 1993-07-09 | 1995-09-26 | Nanomotion Ltd. | Ceramic motor |
| CN1633022A (en) * | 2004-12-24 | 2005-06-29 | 清华大学 | In-plane Vibration Linear Ultrasonic Motor of Piezoelectric Ceramic Metal Composite Plate |
| CN2847685Y (en) * | 2005-04-08 | 2006-12-13 | 清华大学 | Grooved metal square colume piezoelectric sheet composite supersonic micro motor |
| US20070029898A1 (en) * | 2005-08-08 | 2007-02-08 | Samsung Electro-Mechanics Co., Ltd. | Stator and ceramic tube type ultrasonic motor using the same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467517A (en) * | 2014-11-03 | 2015-03-25 | 孙亚飞 | Piezoelectric composite pipe driving device and manufacturing method for piezoelectric composite pipe driving device |
| CN104467517B (en) * | 2014-11-03 | 2017-05-17 | 孙亚飞 | Piezoelectric composite pipe driving device and manufacturing method for piezoelectric composite pipe driving device |
| CN115211024A (en) * | 2019-12-16 | 2022-10-18 | 艾科威公司 | Electromechanical actuator with composite drive pad |
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| Publication number | Publication date |
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| CN102684547B (en) | 2015-03-25 |
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Effective date of registration: 20180404 Address after: 510000 Guangdong city of Guangzhou Province Economic and Technological Development Zone Nanxiang Branch 1, a self A508-A room (only for office use) Patentee after: JIANCHENG TECHNOLOGIES (GUANGZHOU) Co.,Ltd. Address before: 361009 Leng Dou, Xiamen, Fujian Province, No. 157, 703 Patentee before: Jiang Hai |
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Effective date of registration: 20230903 Address after: Room 1006, No.2003 Qunxian Road, Keqiao street, Keqiao District, Shaoxing City, Zhejiang Province, 312000 Patentee after: Jiancheng Technology (Shaoxing) Co.,Ltd. Address before: Room A508-A, Building 1, No. 1 Nanxiang Branch Road, Guangzhou Economic and Technological Development Zone, Guangdong Province, 510000 (for office use only) Patentee before: JIANCHENG TECHNOLOGIES (GUANGZHOU) Co.,Ltd. |
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