CN1606227A - Minitype rod traveling wave type ultrasonic motor - Google Patents
Minitype rod traveling wave type ultrasonic motor Download PDFInfo
- Publication number
- CN1606227A CN1606227A CN 200410065703 CN200410065703A CN1606227A CN 1606227 A CN1606227 A CN 1606227A CN 200410065703 CN200410065703 CN 200410065703 CN 200410065703 A CN200410065703 A CN 200410065703A CN 1606227 A CN1606227 A CN 1606227A
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- rotor
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- traveling wave
- shell
- base
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- 239000000919 ceramic Substances 0.000 claims abstract description 13
- 238000002604 ultrasonography Methods 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 2
- 230000005684 electric field Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
A micro-rod traveling wave supersonic motor is composed of a stator part including screwing tightly the piezoelectric ceramic set and electrode plates by the base and the up balance block with a crew rod on the base. The rotor part is composed of a rotor, a bearing and a disk spring. The shell part is composed of a holddown and a shell. The pre-pressure of the stator and rotor is applied by pressing the disk spring with press blocks. When a certain AC voltage is inlet into the motor in supersonic frequency, the top surface mass points on the top balance block of the stator form elliptic movement, a friction is generated between the rotor and stator since pre-pressure exists between them. The power is output by the rotor shaft.
Description
Technical field:
Minitype rod traveling wave type ultrasonic motor of the present invention belongs to the ultrasound electric machine in the electrical micro-machine field.
Background technology:
Ultrasound electric machine is to utilize the inverse piezoelectric effect of piezoelectric ceramic and the novel electrical micro-machine of ultrasonic vibration.Wherein rod traveling wave type ultrasonic motor belongs to a kind of of traveling wave type ultrasonic motor.Because have more special advantages than hour ultrasound electric machine than conventional motors, so microminiaturization is the trend of ultrasound electric machine development in size.Existing rod traveling wave type design of electrical motor volume is bigger, installs and fixes inconvenience, has limited the application of this motor greatly.
Summary of the invention:
It is littler that purpose of the present invention just is to develop a kind of volume, is easier to processing, assembling and use, and efficient is higher, the minitype rod traveling wave type ultrasonic motor that range of application is wider.
For achieving the above object, the stator design of this minitype rod traveling wave type ultrasonic motor adopts an end to prop up other end boundary condition freely admittedly, adopts the direct outputting power of armature spindle.Be that stator comprises and the gluing base that links to each other in shell lower end that last balancing weight is connected by base solid shafting screw thread with base concrete the composition, and the piezoelectric ceramic group that therebetween is equipped with electrode pad set places in the shell between inner face and the last balancing weight lower surface; The rotor lower surface contacts with last balancing weight upper surface, and disk spring places on the rotor upper surface, and armature spindle links to each other with the briquetting that places the shell upper surface by bearing and locatees.
The present invention compared with prior art, structure is compact more, processing and assembling all are easy to realize higher precision, are more convenient for simultaneously installing and using, and are particularly suitable for drive unit miniature, precision optical machinery.
Description of drawings:
Fig. 1 is the structural representation of minitype rod traveling wave ultrasound electric machine.
Label title among Fig. 1: 1, base, 2, electrode pad set, 3, the piezoelectric ceramic piece group, 4, go up balancing weight, 5, shell, 6, rotor, 7, butterfly spring, 8, bearing, 9, briquetting.
Fig. 2 is motor stator FEM (finite element) model and operation mode schematic diagram.
Embodiment:
The present invention is based on the piezoelectric effect of utilizing piezoelectric ceramic piece and swashs an end and prop up admittedly and an end second order flexural vibration mode of spring beam and the novel ultrasound electric machine that is developed into freely.It mainly is made up of three parts such as stator, rotor, housings.Fig. 1 is a concrete structure schematic diagram of the present invention, and as seen from the figure, the stator of motor with piezoelectric ceramic group 3 (totally 5)/electrode pad set 2 (totally 6), compresses formation spring beam by the screw rod on the datum axle by base 1 and last balancing weight 4.Base and shell glued joint, and form oscillator one end and prop up other end boundary condition freely admittedly.Motor is easier for installation, reliable like this, can be to do not influence the operation mode of motor because of the installation site.4 one-tenth bands of last balancing weight outer toroid groove.Groove size and position are calculated through finite element optimum design and are determined, to obtain optimum resonance frequency and maximum stator faces amplitude.The upper end is provided with horn mouth, and purpose is to add large amplitude and reduce the weight of motor own.Briquetting 9 is to be slidingly matched with shell 5, and rotor 6 is positioned, and guarantees the contact position of rotor 6 and last balancing weight 4, compresses butterfly spring 7 simultaneously, and the precompression between the stator and rotor is provided.Butterfly spring 7 has nonlinear feature, and the bulk of also having dwindled motor in the constant precompression is provided between given, rotor.Four screwed holes are arranged on the briquetting 9, be used to install and fix motor.Be rolling bearing 8 between briquetting 9 and the armature spindle, play radial support and positioning action rotor.The contact portion of rotor 6 and last counterweight 4 end faces adopts the flex rotor of inner groovy, and its better elastic can reduce radial slippage, improves the efficient of frictional drive.When the motor precompression is regulated when suitable, with briquetting 9 and shell 5 gluing be one.This structure has guaranteed in motor size than hour good assembly precision.Because stationary part is positioned at shell 5 inside, machine operation is more safely with stable so simultaneously.
Every piezoelectric ceramic piece electroplate, subregion not below, above two subregions, wherein a subregion carries out forward polarization, another subregion reverse polarization.Piezoelectric ceramic piece after the polarization is subjected to electric field action can produce distortion.The subregion that polarised direction is identical with direction of an electric field produces elongation strain, and the subregion that polarised direction is opposite with direction of an electric field produces compression.So a slice piezoelectric ceramic piece just can make stator produce transverse bending vibration under action of alternative electric field.Accompanying drawing 2 (a) is the FEM (finite element) model of motor stator part.Get 4 piezoelectric ceramic pieces, be divided into two groups, be called A mutually with B mutually.When A passed to sin ω t (its frequency equals stator second order flexural vibration mode frequency) alternating voltage mutually, stator was with the generation resonance that bends right and left, shown in the A phase operation mode of accompanying drawing 2 (b); When B pass to identical frequency mutually with A, during with the cos ω t alternating voltage of the width of cloth, flexural resonance before and after stator produces is shown in the B phase operation mode of accompanying drawing 2 (c).If with these two voltages be added to respectively simultaneously A mutually and B mutually, so, this two orthogonal flexural vibrations synthetic, stator just presents second order rotoflector mode, stator upper surface formation B
01The row ripple, arbitrary particle produces elliptic motion on the stator upper surface thereby make.This elliptic motion just adds the precompression between stator and rotor, makes and produces frictional force between stator and rotor, promotes rotor and rotates in the opposite direction along stator faces row ripple side.The 5th piezoelectric ceramic piece is as the feedback phase in the accompanying drawing 1, and it is a direct piezoelectric effect of utilizing piezoelectric ceramic piece, produces alternating voltage, in order to as feedback voltage motor being carried out automatic frequency tracking, thereby guarantees that rotating speed of motor is stable.
Rotor of the present invention adopts novel band inner groovy flex rotor, is easier to processing, shown in part 6 in the accompanying drawing 1.Rotor size through optimal design has guaranteed the stator and rotor excellent contact, has significantly reduced the slide relative between the stator and rotor, thereby has reduced energy loss, has improved efficiency of motor.
Claims (3)
1, a kind of minitype rod traveling wave ultrasound electric machine, comprise stator, rotor and shell, it is characterized in that, described stator comprises the base (1) that links to each other with shell (5) lower end, last balancing weight (4) is threaded by base (1) solid shafting with base (1), and the piezoelectric ceramic group (3) that the centre accompanies electrode pad set (2) places in the shell (5) between base (1) inner face and last balancing weight (4) lower surface; Described rotor (6) lower surface contacts with last balancing weight (4) upper surface, and disk spring (7) places on rotor (6) upper surface, and armature spindle links to each other with the briquetting (9) that places shell (5) upper surface by bearing (8) and locatees.
2, minitype rod traveling wave ultrasound electric machine according to claim 1 is characterized in that, rotor (6) is the inner groovy flex rotor.
3, require 1,2 described minitype rod traveling wave ultrasound electric machines according to patent, it is characterized in that last balancing weight (4) has an outer toroid groove, the end is horn mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100657039A CN100356677C (en) | 2004-11-12 | 2004-11-12 | Minitype rod traveling wave type ultrasonic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100657039A CN100356677C (en) | 2004-11-12 | 2004-11-12 | Minitype rod traveling wave type ultrasonic motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1606227A true CN1606227A (en) | 2005-04-13 |
| CN100356677C CN100356677C (en) | 2007-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100657039A Expired - Fee Related CN100356677C (en) | 2004-11-12 | 2004-11-12 | Minitype rod traveling wave type ultrasonic motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100356677C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1832325B (en) * | 2006-03-16 | 2012-02-08 | 中国科学技术大学 | Self-locking high precision rotation drive motor |
| CN102974906A (en) * | 2012-12-29 | 2013-03-20 | 苏州市职业大学 | Ultrasonic electrospark composite machining vibrator based on longitudinal vibration mode |
| CN103208944A (en) * | 2013-05-08 | 2013-07-17 | 苏州科技学院 | Single electric signal driving rotation ultrasonic motor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09201081A (en) * | 1996-01-17 | 1997-07-31 | Nikon Corp | Apparatus and method for driving by using vibrating actuator |
| JP3805240B2 (en) * | 2001-11-30 | 2006-08-02 | ニスカ株式会社 | Ultrasonic motor |
| CN1479444A (en) * | 2003-07-03 | 2004-03-03 | 南京航空航天大学 | Rod progressive wave type ultrasonic electric machine |
-
2004
- 2004-11-12 CN CNB2004100657039A patent/CN100356677C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1832325B (en) * | 2006-03-16 | 2012-02-08 | 中国科学技术大学 | Self-locking high precision rotation drive motor |
| CN102974906A (en) * | 2012-12-29 | 2013-03-20 | 苏州市职业大学 | Ultrasonic electrospark composite machining vibrator based on longitudinal vibration mode |
| CN102974906B (en) * | 2012-12-29 | 2016-03-02 | 苏州市职业大学 | Based on the ultrasonic edm Compound Machining oscillator of longitudinal vibration mode |
| CN103208944A (en) * | 2013-05-08 | 2013-07-17 | 苏州科技学院 | Single electric signal driving rotation ultrasonic motor |
| CN103208944B (en) * | 2013-05-08 | 2016-02-24 | 苏州科技学院 | A kind of single-electrical signal drives rotary ultrasonic motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100356677C (en) | 2007-12-19 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NANJING WANNA ULTRASONIC MOTOR CO., LTD. Free format text: FORMER OWNER: NANJING AERONAUTICS AND ASTRONAUTICS UNIV. Effective date: 20120611 |
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Free format text: CORRECT: ADDRESS; FROM: 210016 NANJING, JIANGSU PROVINCE TO: 210019 NANJING, JIANGSU PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20120611 Address after: 210019 Xincheng Science Park, Jianye District, Nanjing, Jiangsu 5108, Nanjing Patentee after: Nanjing Wanma Ultrasonic Motors Co.,Ltd. Address before: Yudaojie Nanjing 210016 Jiangsu province No. 29 Patentee before: Nanjing University of Aeronautics and Astronautics |
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| ASS | Succession or assignment of patent right |
Owner name: JIANGSU FENGKE ULTRASONIC MOTORS TECHNOLOGY CO., L Free format text: FORMER OWNER: NANJING WANNA ULTRASONIC MOTOR CO., LTD. Effective date: 20130129 |
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Free format text: CORRECT: ADDRESS; FROM: 210019 NANJING, JIANGSU PROVINCE TO: 211514 NANJING, JIANGSU PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20130129 Address after: Liuhe District of Nanjing City, Jiangsu province 211514 Dong Gou Zhen Fu Qian Jie No. 1 Patentee after: Jiangsu Fengke Utrasonic Motors Technology Co., Ltd. Address before: 210019 Xincheng Science Park, Jianye District, Jiangsu, Nanjing 5108 Patentee before: Nanjing Wanma Ultrasonic Motors Co.,Ltd. |
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| DD01 | Delivery of document by public notice | ||
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Addressee: Jiangsu Fengke Utrasonic Motors Technology Co., Ltd. Document name: Notification of Termination of Patent Right |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071219 Termination date: 20161112 |