CN102684547B - Composite metal ceramic tubular piezoelectric motor - Google Patents
Composite metal ceramic tubular piezoelectric motor Download PDFInfo
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- CN102684547B CN102684547B CN201110061703.1A CN201110061703A CN102684547B CN 102684547 B CN102684547 B CN 102684547B CN 201110061703 A CN201110061703 A CN 201110061703A CN 102684547 B CN102684547 B CN 102684547B
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- 239000000919 ceramic Substances 0.000 title claims abstract description 82
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 50
- 239000002184 metal Substances 0.000 title claims abstract description 50
- 239000002131 composite material Substances 0.000 title claims abstract description 11
- 230000007704 transition Effects 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 4
- 230000010287 polarization Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 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
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
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 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, large static retention forces square, fast response time, small in volume, the resolution ratio of nanometer scale and be subject to extensive concern both domestic and external without advantages such as magnetic interference, and obtain application in various fields.Usually, piezo-electric motor can be divided into linear piezoelectric motor and rotating piezoelectric motor.Mover moving linearly in linear piezoelectric motor; Mover in rotating piezoelectric motor rotates.In general, when equal thrust, people wish the efficiency improving motor further, reduce piezo-electric motor driving voltage and reduce piezo-electric motor size, can be applied to more occasions to make piezo-electric motor.
US Patent No. 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 ceramics.The one side of pottery is full electrode, and another side is quartering electrode, ceramic through-thickness polarization.The compressional vibration pattern (L1) of motor operations on the first rank and the beam mode (B2) of second-order.When L1 and B2 be added in two, diagonal angle electrode excite simultaneously time, produce oval standing wave in the middle part, end of pottery, drive mover to move by the brake pad being bonded in this position.When vibration is excited by another pair of electrodes, driving force is contrary, and mover moves towards other direction.Although this motor configuration is simple, ceramic dimension is thicker, needs larger voltage could form certain Oscillation Amplitude in end and moves to drive mover.In addition, the efficiency of motor is not high yet, and heating is comparatively serious, under high load can only intermittent work.
US Patent No. 6940209 discloses a kind of ceramic metal composite tube motor, and the stator of this motor is made up of a metal tube and four piezoelectric ceramics, and four sections of potteries are pasted on the outer surface of metal tube along longitudinal symmetry of pipe.The polarization of pottery through-thickness, two potteries of right opposite and metal tube form pair of electrodes.When to apply phase difference be respectively certain high frequency electrical signal of 90 degree to two pairs of electrodes, will obtain at multiple tube the yaw motion (Wobbling) that two ends produce a kind of similar " hula hoop ".Screw thread is processed with inside the two ends of metal tube.Rotor is a screw shaped metal, and being threaded of stator two ends, and when the yaw motion of " hula hoop " made by stator, can do twisted linear motion by rotor driven.Although this design can make the less motor of size, and the connection between stable stator and rotor, complex structure, motor thrust is limited.
Summary of the invention
The object of this invention is to provide one and there is low voltage drive, linear piezoelectric pottery motor---the composite metal ceramic tubular piezoelectric motor of high thrust.
The present invention includes stator and the electrode being located at piezoelectric ceramics surface, it is characterized in that stator is provided with metal tube, piezo ceramic element and driving foot; Metal tube is square column jecket, piezo ceramic element is provided with 4 piezoelectric ceramics, 4 piezoelectric ceramics are equipped with electrode, the polarised direction of piezoelectric ceramics is through-thickness, 4 piezoelectric ceramics are fixed in 1 side in 4 sides of metal tube respectively, on wherein 1 piezoelectric ceramics driving foot to be fixed in 4 piezoelectric ceramics, or on 1 seamed edge being fixed in metal tube 4 seamed edges.
Described 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.
Described 4 piezoelectric ceramics are identical rectangle sheet piezoelectric ceramics.
Described 4 piezoelectric ceramics are fixed in 1 side in 4 sides of metal tube respectively, are that 4 piezoelectric ceramics are respectively on symmetrical 1 side be pasted in 4 sides of metal tube.
The described electrode being located at piezoelectric ceramics surface is the full electrode being coated on upper and lower two surfaces of piezoelectric ceramics.
Described stator is also provided with holder and elastic component, and holder is clamped on stator, and elastic component is connected with holder.Holder is clamped in the node location place of stator, can avoid the vibration affecting stator like this, and the effect of flexure strip applies pretightning force on driving foot, plays the effect of fixed stator simultaneously.
On described 1 piezoelectric ceramics driving foot to be fixed in 4 piezoelectric ceramics, or on 1 seamed edge being fixed in metal tube 4 seamed edges, be drive foot be fixed on the centre position of 1 piezoelectric ceramics in 4 piezoelectric ceramics, or be fixed on 1 seamed edge centre position in metal tube 4 seamed edges.
Compare with existing linear piezoelectric pottery motor, the present invention has following outstanding advantages:
During use, when applying certain high frequency electrical signal by electrode pair piezoelectric ceramics, yaw motion (Wobbling) or the standing wave motion of a kind of similar " hula hoop " can be produced in the middle part of metal tube.The driving foot being positioned at this position then does elliptic motion, drives foot to move with regard to driving the driven member (as slide block) touched with it, thus realizes driving function.The present invention has the simple and undersized outstanding advantages of structure, can adopt thinner piezoelectric ceramics simultaneously, can realize low voltage drive and high thrust work.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1.
Fig. 2 is polarization and the electric drive mode schematic diagram of the embodiment of the present invention 1.
Fig. 3 is the structural representation of the embodiment of the present invention 2.
Fig. 4 is the structural representation of the embodiment of the present invention 3.
Fig. 5 is the STRUCTURE DECOMPOSITION schematic diagram of Fig. 4.
Fig. 6 is the structural representation of the embodiment of the present invention 4.
Fig. 7 is the STRUCTURE DECOMPOSITION schematic diagram of Fig. 6.
Fig. 8 is the scheme of installation of the present invention when applying.
Fig. 9 is that the present invention is for driving the schematic diagram of the slide block moving linearly be located on guide rail.
Detailed description of the invention
Embodiment 1
See Fig. 1 and 2, stator is provided with metal tube 101, piezoelectric ceramics 102 (4), drives foot 103 and electrode (two to).Metal tube 101 cross section is 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 label is 1010.4 sides of metal tube 101 adopt high strength epoxy resin symmetrical stickup 1 piezoelectric ceramics 102 respectively.Drive foot 103 to be located on 1 seamed edge 1011 of metal tube 101, drive foot 103 general by high-abrasive material, as aluminium oxide ceramics, carbide alloy etc. are made.Two surfaces up and down of piezoelectric ceramics 102 are full electrode, and through-thickness polarizes, as shown by the arrows in figure 2.Wherein the polarised direction of a pair adjacent 2 piezoelectric ceramics 102 is identical, namely points to outside stator, and another is contrary to the polarised direction of adjacent 2 piezoelectric ceramics 102, namely points to inside stator.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.As shown in Figure 2.Now for sine wave signal, pair of electrodes accesses pumping signal Vsin ω t, in addition pair of electrodes access Vcos ω t wherein, form two thus to the alternating current drive signal with 90 ° of phase differences.When direction of an electric field is consistent with polarised direction, piezoelectric ceramics extends along polarised direction (thickness direction), shortens along its length simultaneously, otherwise piezoelectric ceramics shortens along polarised direction (thickness direction), extends along its length simultaneously.Because the drive voltage signal of input is the two group pulse signals with 90 ° of phase differences, so stator produces alternately deformation in orthogonal both direction, and finally make bonding drive foot 103 to do elliptical orbit motion, drive foot 103 to drive driven member (as slide block, not drawing in Fig. 1 and 2) simultaneously.If two groups of power supplys switch mutually, then driven member will be moved in the opposite direction.Stator also can be driven by single phase poaer supply, and the normal direction along a pair piezoelectric ceramics applying drive singal is vibrated by such stator, and drives driven member (mover) to move towards a direction.When power supply puts on another to piezoelectric ceramics pottery, driven member (mover) will be moved to another way.
Embodiment 2
See Fig. 3, similar to Example 1, difference is, drives foot 103 to be located at the surperficial centre position of 1 piezoelectric ceramics 102 in 4 piezoelectric ceramics 102.Operation principle is identical.All the other labels in Fig. 3 are corresponding consistent with embodiment 1.
Embodiment 3
See Figure 4 and 5, similar to Example 2, difference is, stator is also provided with holder 100 and elastic component 104, gripping member 100 is bonding with piezoelectric ceramics 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 forms integral structure.The effect of elastic component 104 applies pretightning force on driving foot 103 by holder 100, plays the effect of fixed stator simultaneously.Elastic component 104 is 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 affect the vibration of stator like this.Adopted vibration mode is depended in the position of node, and as adopted first-order bending vibration pattern, the position of node is positioned at λ place, end 0.224, and λ is the length of metal tube 101.Length as piezoelectric ceramics 102 is less than the length of metal tube 101, and node location can depart from, and draws node location by theory calculate or experiment.In order to save space, the length direction that spring leaf 104 also can be parallel to stator is installed.
Embodiment 4
See Fig. 6 and 7, similar to Example 3, difference is, the Structural Transformation of the holder 100 (as shown in Figure 4 and Figure 5) described in embodiment 3 is stator sleeve 106, can conveniently install and simplify the shape of spring leaf like this.Stator sleeve 106 is fastened in (dismantled and assembled) on stator, is connected (dismantled and assembled) bottom spring leaf 107 with stator sleeve 106 upper surface inlaid type.Fig. 6 is corresponding consistent with embodiment 3 with all the other labels in 7.
See Fig. 8, when the present invention applies, stator (for stator described in embodiment 3 in Fig. 8) is positioned in housing, housing is provided with base 301 and lid 302, motor standing groove 3010 is provided with in base 301, stator is placed in motor standing groove 3010, and lid 302 is fixed on base 301 by trip bolt 303.All the other labels in Fig. 8 are corresponding consistent with embodiment 3.
See Fig. 9, the piezo-electric motor 400 be arranged in housing is connected with the slide block 602 be located on linear guides 601 by driving foot 103, so just can be with movable slider 602 (driven member) moving linearly.Thus piezo-electric motor 400 achieves driving function.Label 104 is spring leaf.
Claims (6)
1. a composite metal ceramic tubular piezoelectric motor, comprises stator and the electrode being located at piezoelectric ceramics surface, it is characterized in that stator is provided with metal tube, piezo ceramic element and driving foot; Metal tube is square column jecket, piezo ceramic element is provided with 4 piezoelectric ceramics, 4 piezoelectric ceramics are equipped with electrode, the polarised direction of piezoelectric ceramics is through-thickness, 4 piezoelectric ceramics are fixed in 1 side in 4 sides of metal tube respectively, on wherein 1 piezoelectric ceramics driving foot to be fixed in 4 piezoelectric ceramics, or on 1 seamed edge being fixed in metal tube 4 seamed edges; The external driving power of electrode set by 4 piezoelectric ceramics, described driving power is the AC driven power of exportable two groups of definite value frequencies and phase difference pumping signal, wherein one group of pumping signal is connected on electrode set by 2 piezoelectric ceramics be oppositely arranged, and another group pumping signal is connected on electrode set by another 2 piezoelectric ceramics be oppositely arranged; Described stator is also provided with holder and elastic component, and holder is clamped on stator, and elastic component is connected with holder; Holder and elastic component form integral structure.
2. a kind of composite metal ceramic tubular piezoelectric motor as claimed in claim 1, it is characterized in that described metal tube is positive square column jecket, 4 seamed edges of metal tube are the seamed edge of plane transition, or are the seamed edge of arc transition.
3. a kind of composite metal ceramic tubular piezoelectric motor as claimed in claim 1, is characterized in that described 4 piezoelectric ceramics are identical rectangle sheet piezoelectric ceramics.
4. a kind of composite metal ceramic tubular piezoelectric motor as claimed in claim 1, it is characterized in that described 4 piezoelectric ceramics are fixed in 1 side in 4 sides of metal tube respectively, is that 4 piezoelectric ceramics are respectively on symmetrical 1 side be pasted in 4 sides of metal tube.
5. a kind of composite metal ceramic tubular piezoelectric motor as claimed in claim 1, the electrode being located at piezoelectric ceramics surface described in it is characterized in that is the full electrode being coated on upper and lower two surfaces of piezoelectric ceramics.
6. a kind of composite metal ceramic tubular piezoelectric motor as claimed in claim 1, it is characterized in that on described 1 piezoelectric ceramics driving foot to be fixed in 4 piezoelectric ceramics, or on 1 seamed edge being fixed in metal tube 4 seamed edges, drive foot to be fixed in the centre position of 1 piezoelectric ceramics in 4 piezoelectric ceramics, or be fixed in 1 seamed edge centre position in metal tube 4 seamed edges.
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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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| CN201110061703.1A CN102684547B (en) | 2011-03-14 | 2011-03-14 | Composite metal ceramic tubular piezoelectric motor |
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| CN102684547A CN102684547A (en) | 2012-09-19 |
| CN102684547B true CN102684547B (en) | 2015-03-25 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| WO2021126056A1 (en) * | 2019-12-16 | 2021-06-24 | Piezomotor Uppsala Ab | Electromechanical actuators with composite drive pads |
Citations (3)
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100704990B1 (en) * | 2005-08-08 | 2007-04-10 | 삼성전기주식회사 | Stator and Ceramic Tubular Ultrasonic Motor Using the Same |
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2011
- 2011-03-14 CN CN201110061703.1A patent/CN102684547B/en active Active
Patent Citations (3)
| 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 |
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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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