CN1389973A - Universal hollow-structure great-moment ring piezoelectric ultrasonic motor - Google Patents
Universal hollow-structure great-moment ring piezoelectric ultrasonic motor Download PDFInfo
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- CN1389973A CN1389973A CN 02125283 CN02125283A CN1389973A CN 1389973 A CN1389973 A CN 1389973A CN 02125283 CN02125283 CN 02125283 CN 02125283 A CN02125283 A CN 02125283A CN 1389973 A CN1389973 A CN 1389973A
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Abstract
The general annular piezoelectricity ultrasonic motor of large moment with hollow structure features in that the stator comprises the metal ring with driving teeth and the annular piezoelectric ceramic pieces. The rotator comprises metal pieces matching the driving teeth, the spring and rubber gasket. The base comprises the ball bearing for positioning the hollow central shaft. The piezoelectric ceramic pieces are polarized along the thickness with inversion once per 1/2 wavelength. The difference of 1/4 or 3/4 wavelength is existed between the two groups of the polarized sections, which are connected to the two AC signals. The invented motor possesses the versatility, provides the maximum output torque larger than 5K gfcm, and rotate speed less than 120r/min.
Description
Technical field
General hollow structure great-moment ring piezoelectric ultrasonic motor belongs to the piezoelectric ultrasonic motor technical field.
Background technology
Piezoelectric ultrasonic motor since self response speed fast, cut off self-lock, do not have characteristics such as electromagnetic distu, low-speed running, have very as the driving element of precision instrument and use widely.External ring piezoelectric motor mainly contains two kinds: a kind of is because adopt the piezoelectric ceramic piece of loop configuration, and is called the ring piezoelectric motor, but it does not possess the characteristics of structure hollow.Fig. 1 is Japanese Sashida, the structure of the ring piezoelectric ultrasonic motor of Matsushita and the exploitation of Canon company, and it mainly comprises rotor 11, friction material 12, stator 13 and piezoelectric ceramic ring plate 14.The fixed form of stator all adopts the soft sheet rubber of pad last layer below piezoelectric ceramic piece.Thereby be difficult to enough pretightning forces are provided between stator and rotor, when external diameter was 60mm, the maximum output torque of motor was generally about 1Kgfcm.Fig. 2 is the structure of the ring piezoelectric ultrasonic motor of Shinsei company exploitation, and it mainly comprises rotor 20, stator 21, axle 22, pretension adjusting mechanism 23, pedestal 24 and shell 25.Wherein, pretension adjusting mechanism 23 comprises elasticity video disc 230, rubber sheet gasket 231, adjusts pad 232 and axle pre-load nut 233.Rotor 20 comprises metallic plate 201 and friction material 202.Stator 21 is made up of the circular metal plate 211 that is milled with tooth 2110, ring-shaped pottery sheet 212.Pedestal also has axle sleeve 241 and bearing 242 except pedestal itself.Its stator more than 21 adopts to be fixed with the mode of screw or other rigidity freely-supported in the interior week of stator plectane 211, relatively be fit to add bigger axial pre tightening force, provide possibility for obtaining big output torque, when the about 60mm of external diameter, the maximum output torque of motor is generally about 6Kgfcm, but the structure of this ring piezoelectric motor is non-hollow.Abroad another is to be the matching used ring piezoelectric motor of camera specially, its structure has the characteristics of hollow, pass through from the centre for light, but the design of motor itself is not based on the universal product, its pedestal, adjustment part etc. all are used with camera lens, do not have versatility, its maximum output torque is also little.Thereby it does not possess the characteristics of versatility and big moment.
Summary of the invention
The object of the present invention is to provide the big moment piezoelectric ultrasonic motor of a kind of general hollow structure to use for making driving element in the precision optical machinery.
The invention is characterized in that it contains: stator comprises that the surface has the becket and the ring piezoelectric potsherd that is connected in this becket bottom of continuous pectination driving gear; Rotor comprises the metal ring plate that the bottom surface cooperates with the said stator driving gear, disk spring and be positioned at this metal ring plate upper surface and pressurized in the rubber sheet gasket of this disk spring; Pedestal comprises to the sterically defined standard ball bearing of output shaft with endoporus said stator is carried out sterically defined pedestal; Output shaft comprises the central shaft of hollow, and this central shaft has the ring washer and the pre-load nut at screw thread place near the axle key of rotor one end near the central shaft lower end; Above-mentioned ring piezoelectric potsherd reverse side polarizes along thickness direction, every half wavelength oppositely once, be divided into two groups between the polarized area of this piezoelectric ceramic, the space differs 1/4 wavelength or 3/4 wavelength between two groups, the reverse side of this piezoelectric ceramic is unified grounding electrode, on its front, connecing phase difference between two groups of polarized areas of piezoelectric ceramic piece respectively is the two-way AC signal of 90 degree.There is the screw that is performed part that fixedly passes the motor hollow space upper end at described central shaft near the rotor place.Have near the disk spring place in the upper end of described central shaft and to compress the ring flange that disk spring is used.
It has reached intended purposes to use proof.
Description of drawings
The structural representation one of the existing ring piezoelectric ultrasonic motor of Fig. 1.
The structural representation two of the existing ring piezoelectric ultrasonic motor of Fig. 2.
The structural representation of the hollow ring piezoelectric ultrasonic motor of Fig. 3 embodiment of the invention.
The structural representation of the hollow ring piezoelectric ultrasonic motor stator of Fig. 4 embodiment of the invention.
The polarization distribution schematic diagram of the ring piezoelectric potsherd of Fig. 5 embodiment of the invention; A, the front; B, reverse side.
The actual vibration test result of the hollow ring piezoelectric ultrasonic motor stator of Fig. 6 embodiment of the invention.
The photo of the hollow ring piezoelectric ultrasonic motor of Fig. 7 embodiment of the invention.
Embodiment
Ask for an interview Fig. 3～Fig. 5.
Fig. 3 is the general structure of present embodiment.It is made up of rotor portion 30, stationary part 31, base part 32, shaft portion 33.Wherein, stationary part 31 is to be made of becket 313 that has pectination driving gear 310 and ring piezoelectric potsherd 314, and ring piezoelectric potsherd 314 is bonded in the bottom of becket 313 by epoxide-resin glue; Base part 32 has a pedestal 321 that has fixing threaded hole 3210, and its inwall has a standard ball bearing 320 to be used for central shaft 33 location; Rotor 30 is made up of disk spring 300, sheet rubber 301 and metal ring plate 302, sheet rubber 301 and metal ring plate 302 usefulness epoxide-resin glues are bonding, under the effect of disk spring 300, metal ring plate 302 closely cooperates with stator driving gear 310, and rotor portion 30 is closely contacted with stationary part 31; Axle 33 comprises: the ring washer 332 and the pre-load nut 333 at screw thread 3301 places of central shaft 330 lower ends of the axle key 331 of close rotor 30 1 sides, close hollow, close rotor 30 1 sides of central shaft 330 also are distributed with 4 screw holes 3300 and a ring flange 3302, and the effect of screw hole 3300 is the parts that are performed that fixedly pass the motor hollow space.The effect of ring flange 3302 is to compress disk spring 300.The output torque of motor is passed to central shaft 330 by the metal ring plate 302 in the rotor 30, rubber ring plate 301, disk spring 300, passes to by the screw in the screw hole 3300 and is performed part.
Fig. 4 is its stator structure.Stator 31 mainly is made up of the becket 313 of ring piezoelectric potsherd 314 and middle attenuate, and both connect with epoxide-resin glue.Inner ring at stator 31 has a boss 312, and it is sitting in the endoporus of pedestal 321, plays the effect to stator 31 location of piezoelectric motor.The outer rim of stator 31 has comb teeth structure 310, and its effect is the amplitude that amplifies stator 31.There is unthreaded hole 311 at attenuate place in metal ring plate 313, wherein, has a unthreaded hole need be screwed the ground wire of driving power, has a unthreaded hole to fix by realizing circumference between cylinder alignment pin and the pedestal 321.
The subregion of piezoelectric ceramic ring plate 314 obverse and reverses as shown in Figure 5.There are the signal of telecommunication SIN of two time phase differences, 90 degree and the input of COS in the front, reflects the signal of telecommunication feedback end of vibrational state in addition.The sign symbol of piezoelectric ceramic piece 314 reverse side has been represented the polarised direction of corresponding ceramic zone, and piezoelectric ceramic ring plate 314 is along the thickness direction polarization, and every half wavelength oppositely once.Be divided into two groups between the polarized area of piezoelectric ceramic piece 314, the space differs 1/4 wavelength or 3/4 wavelength between two groups.The reverse side of piezoelectric ceramic piece 314 is mutually bonding with becket 313.
The vibration-testing result schematic diagram of the stator of present embodiment is seen Fig. 6.This image is the test result of laser-Doppler, and one dark one latent both colors are represented the positive and negative vibration along the stator thickness direction respectively.This image is the row standing wave that forms on the stator 31 of piezoelectric motor of one road SIN or COS wherein, and the standing wave that differs 1/4 wavelength when another same column space position also forms on stator, will form to realize the capable ripple that drives.The photo of corresponding hollow ring piezoelectric ultrasonic motor as shown in Figure 7.
Its Specifeca tion speeification of hollow structure ring piezoelectric ultrasonic motor of present embodiment is as follows: profile is a round pie, stator diameter 62mm, motor body thickness 20mm, motor internal hollow diameters 20mm, axial length 55mm, diameter 25mm, operating frequency all can positive and negative two-way rotation under 33kHz (8 wavelength) and two kinds of situations of 40kHz (9 wavelength), the stepping of motor movement mode and continuously rotation all can, rotating speed is less than 120r/min, maximum moment is greater than 5kgfcm.
Claims (3)
1, general hollow structure great-moment ring piezoelectric ultrasonic motor, comprise rotor, stator, pedestal and output shaft, it is characterized in that it contains: stator comprises that the surface has the becket of continuous pectination driving gear and is connected in the ring piezoelectric potsherd of this becket bottom; Rotor comprises the metal ring plate that the bottom surface cooperates with the said stator driving gear, disk spring and be positioned at this metal ring plate upper surface and pressurized in the rubber sheet gasket of this disk spring; Pedestal comprises to the sterically defined standard ball bearing of output shaft with endoporus said stator is carried out sterically defined pedestal; Output shaft comprises the central shaft of hollow, and this central shaft has the ring washer and the pre-load nut at screw thread place near the axle key of rotor one end near the central shaft lower end; Above-mentioned ring piezoelectric potsherd reverse side polarizes along thickness direction, every half wavelength oppositely once, be divided into two groups between the polarized area of this piezoelectric ceramic, the space differs 1/4 wavelength or 3/4 wavelength between two groups, the reverse side of this piezoelectric ceramic is unified grounding electrode, on its front, connecing phase difference between two groups of polarized areas of piezoelectric ceramic piece respectively is the two-way AC signal of 90 degree.
2, general hollow structure great-moment ring piezoelectric ultrasonic motor according to claim 1 is characterized in that: there is the screw hole that is performed part that fixedly passes the motor hollow space upper end at described central shaft near the rotor place.
3, general hollow structure great-moment ring piezoelectric ultrasonic motor according to claim 1 is characterized in that: have near the disk spring place in the upper end of described central shaft to compress the ring flange that disk spring is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02125283 CN1207839C (en) | 2002-07-31 | 2002-07-31 | Universal hollow-structure great-moment ring piezoelectric ultrasonic motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02125283 CN1207839C (en) | 2002-07-31 | 2002-07-31 | Universal hollow-structure great-moment ring piezoelectric ultrasonic motor |
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| CN1389973A true CN1389973A (en) | 2003-01-08 |
| CN1207839C CN1207839C (en) | 2005-06-22 |
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| CN 02125283 Expired - Fee Related CN1207839C (en) | 2002-07-31 | 2002-07-31 | Universal hollow-structure great-moment ring piezoelectric ultrasonic motor |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100459403C (en) * | 2005-04-18 | 2009-02-04 | 南京航空航天大学 | Standing wave frequency change step ultrasonic electric machine |
| CN101267171B (en) * | 2008-04-25 | 2011-02-09 | 天津大学 | Electromagnetic voltage adjusting multi freedom degree spherical ultrasonic electromotor |
| CN101980438A (en) * | 2010-10-18 | 2011-02-23 | 南京航空航天大学 | Microminiature rotary travelling wave ultrasonic motor and electric excitation mode thereof |
| CN102118118A (en) * | 2011-03-18 | 2011-07-06 | 广东嘉和微特电机股份有限公司 | Linear type ultrasonic micromotor |
| CN101277075B (en) * | 2008-02-04 | 2011-11-09 | 浙江大学 | Core-aligning core-regulating mechanism for two freedom ball motor |
| CN101546967B (en) * | 2009-05-08 | 2012-05-23 | 电子科技大学 | Thin type standing wave rotary ultrasonic motor |
| CN102751906A (en) * | 2012-07-10 | 2012-10-24 | 南京航空航天大学 | Threaded hollow revolution type travelling wave ultrasound motor |
| CN102922526A (en) * | 2012-10-25 | 2013-02-13 | 上海大学 | Bionic mechanical eyeball based on spherical ultrasonic motor |
| CN103051243A (en) * | 2013-01-11 | 2013-04-17 | 南京航空航天大学 | Hollow ultrasonic motor with built-in vibrating ring |
| CN103516106A (en) * | 2012-06-28 | 2014-01-15 | 深圳市大族激光科技股份有限公司 | Hollow rotary motor and laser scribing device |
| CN103986366A (en) * | 2014-06-04 | 2014-08-13 | 南京航空航天大学 | Hollow ultrasonic motor allowing stator to float |
| CN111049424A (en) * | 2019-12-24 | 2020-04-21 | 上海交通大学 | Piezoelectric speed regulating motor and driving control method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100438307C (en) * | 2005-11-18 | 2008-11-26 | 清华大学 | Screw thread driven polyhedron ultrasonic motor |
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2002
- 2002-07-31 CN CN 02125283 patent/CN1207839C/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100459403C (en) * | 2005-04-18 | 2009-02-04 | 南京航空航天大学 | Standing wave frequency change step ultrasonic electric machine |
| CN101277075B (en) * | 2008-02-04 | 2011-11-09 | 浙江大学 | Core-aligning core-regulating mechanism for two freedom ball motor |
| CN101267171B (en) * | 2008-04-25 | 2011-02-09 | 天津大学 | Electromagnetic voltage adjusting multi freedom degree spherical ultrasonic electromotor |
| CN101546967B (en) * | 2009-05-08 | 2012-05-23 | 电子科技大学 | Thin type standing wave rotary ultrasonic motor |
| CN101980438A (en) * | 2010-10-18 | 2011-02-23 | 南京航空航天大学 | Microminiature rotary travelling wave ultrasonic motor and electric excitation mode thereof |
| CN102118118A (en) * | 2011-03-18 | 2011-07-06 | 广东嘉和微特电机股份有限公司 | Linear type ultrasonic micromotor |
| CN102118118B (en) * | 2011-03-18 | 2012-12-19 | 广东嘉和微特电机股份有限公司 | Linear type ultrasonic micromotor |
| CN103516106A (en) * | 2012-06-28 | 2014-01-15 | 深圳市大族激光科技股份有限公司 | Hollow rotary motor and laser scribing device |
| CN103516106B (en) * | 2012-06-28 | 2017-09-29 | 大族激光科技产业集团股份有限公司 | A kind of hollow rotating motor and laser scriber |
| CN102751906B (en) * | 2012-07-10 | 2015-01-14 | 南京航空航天大学 | Threaded hollow revolution type travelling wave ultrasound motor |
| CN102751906A (en) * | 2012-07-10 | 2012-10-24 | 南京航空航天大学 | Threaded hollow revolution type travelling wave ultrasound motor |
| CN102922526A (en) * | 2012-10-25 | 2013-02-13 | 上海大学 | Bionic mechanical eyeball based on spherical ultrasonic motor |
| CN103051243A (en) * | 2013-01-11 | 2013-04-17 | 南京航空航天大学 | Hollow ultrasonic motor with built-in vibrating ring |
| CN103051243B (en) * | 2013-01-11 | 2015-01-28 | 南京航空航天大学 | Hollow ultrasonic motor with built-in vibrating ring |
| CN103986366A (en) * | 2014-06-04 | 2014-08-13 | 南京航空航天大学 | Hollow ultrasonic motor allowing stator to float |
| CN103986366B (en) * | 2014-06-04 | 2016-04-20 | 南京航空航天大学 | The hollow ultrasonic motor that stator floats |
| CN111049424A (en) * | 2019-12-24 | 2020-04-21 | 上海交通大学 | Piezoelectric speed regulating motor and driving control method thereof |
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| CN1207839C (en) | 2005-06-22 |
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