CN106936333A - A kind of rod-type paster longitudinal-torsional compound ultrasonic motor - Google Patents

A kind of rod-type paster longitudinal-torsional compound ultrasonic motor Download PDF

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Publication number
CN106936333A
CN106936333A CN201611266917.1A CN201611266917A CN106936333A CN 106936333 A CN106936333 A CN 106936333A CN 201611266917 A CN201611266917 A CN 201611266917A CN 106936333 A CN106936333 A CN 106936333A
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CN
China
Prior art keywords
rotor
stator
support
groove
foundation system
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Pending
Application number
CN201611266917.1A
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Chinese (zh)
Inventor
杨淋
任韦豪
张蕉蕉
朱星星
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Nanjing University of Aeronautics and Astronautics
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Nanjing University of Aeronautics and Astronautics
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Priority to CN201611266917.1A priority Critical patent/CN106936333A/en
Publication of CN106936333A publication Critical patent/CN106936333A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02NELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/10Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
    • H02N2/103Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors by pressing one or more vibrators against the rotor
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02NELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/10Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
    • H02N2/12Constructional details

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  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

A kind of rod-type paster longitudinal-torsional compound ultrasonic motor, including stator and rotor assembly, wherein, rotor assembly includes the first precompressed rotor-support-foundation system, the second precompressed rotor-support-foundation system and rotary shaft, first precompressed rotor-support-foundation system, the second precompressed rotor-support-foundation system are laid in stator module two ends respectively, and in mirror alignment;Stator is open circles tubulose metallic matrix, six rectangle planes of formed objects are cut out on excircle in the middle of metallic matrix, one axially distributed groove is cut out respectively every two rectangle planes, and the position of groove is arranged on the junction of two neighboring plane, three road grooves are set altogether, and the two ends of groove are provided with the semicircle perforate equal with groove width;Two rectangular piezoelectric ceramic pieces based on d31 effects are pasted on two rectangle planes between every twice groove respectively, an exciting unit is formed;Motor stator structure of the present invention is simpler, and preferably, output torque is big for extensional vibration and torsional frequency uniformity, has its irreplaceable advantage in the occasion that bulk is limited.

Description

A kind of rod-type paster longitudinal-torsional compound ultrasonic motor
Technical field
The present invention relates to a kind of rod-type paster longitudinal-torsional compound ultrasonic motor, belong to ultrasound electric machine field.
Background technology
The research of longitudinal-torsional compound ultrasonic motor can substantially trace back to the end of the eighties in 20th century, up to the present, its knot Structure species is as many as tens kinds.Traditional longitudinal-torsional compound ultrasonic motor contains two PZT oscillators --- longitudinal vibration and torsion Oscillator, vertical, torsion oscillator inspires two mutually perpendicular vibrations respectively, and both vibrations can be adjusted individually, not coupled mutually.It is vertical Compound ultrasonic motor is turned round compared with other types of ultrasound electric machine, because having that output torque is especially big, controllability by force, rotating The features such as characteristic is consistent, low-speed stability is good, dynamic response performance is good and turn into one of focus of recent domestic research.Closely Researcher proposes various longitudinal-torsional compound ultrasonic motor structures over 20 years.1994, Ueha was with sandwich The multi-modal type of longitrorse that piezoelectric stator structure structure of the substitution with stacked piezoelectric stator have developed an a diameter of 80mm surpasses Acoustic-electric machine;Since 1992, the Tomikawa of Japanese chevron university carried out substantial amounts of research to tests of longitudinaltorsionaultrasonic ultrasonic motors.Root According to the design feature of motor, the motor that oneself is developed is divided into multi-modal stator type and the single class of mode stator type two by he;2000 Year or so, Tsujino is studied oblique slot type mode conversion type ultrasound electric machine, and the motor only needs one group of piezoelectric vibrator to swash Encourage, but single direction rotation can only be realized;2010 or so Zhao Chunsheng, poplars are drenched and propose a kind of chip longitudinal-torsional compound ultrasonic electricity Machine, the motor needs three groups of piezoelectric ceramic pieces to be respectively used to encourage motor stator longitudinal vibration mode and torsional oscillation mode, required piezoelectricity pottery Ceramics quantity is more and barbola work requirement is high, and the structure is not easy to miniaturization.
At present, existing Hybrid transducer motor has the following disadvantages:
1st, the twisting vibration of stator base has three kinds of energisation modes, and one is produced by the torsional oscillation piezoelectric ceramics based on d15 effects, but This torsional oscillation piezoelectric ceramic process is complicated, processing difficulties, high cost;Two is by the longitudinal vibration Piezoelectric Ceramics Excitation based on d33 effects Extensional vibration conversion and obtain, which needs to design corresponding mode converter, complex structure, and can only realize unidirectional rotation Turn, three are encouraged by one group of piezoelectric ceramic piece based on d31 effects at an angle each other, barbola work requirement is high, It is not easy to realize that motor is miniaturized.
2nd, traditional sandwich longitudinal-torsional compound ultrasonic motor complex structure, part be more, assembly process is more, and easily produces Raw rigging error, causes extensional vibration and torsional frequency inconsistent.
The content of the invention
The present invention provides a kind of rod-type paster longitudinal-torsional compound ultrasonic motor, is a kind of steady rotating speed, and output performance is excellent, Low cost, Miniaturized longitudinal-torsional composite ultrasonic motor, this motor cost is low, and number of parts is few, processing technology and assembler Skill is simple, and motor stator structure is simpler, it is only necessary to which the length and width of regulating tank can just make the longitrorse vibrational of motor frequently Rate is consistent, and preferably, motor is easy to miniaturization for extensional vibration and torsional frequency uniformity, and output torque is big, in bulk There is its irreplaceable advantage in limited occasion.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of rod-type paster longitudinal-torsional compound ultrasonic motor, including stator and rotor assembly, wherein, rotor assembly includes that first is pre- Pressure rotor-support-foundation system, the second precompressed rotor-support-foundation system and rotary shaft, the first precompressed rotor-support-foundation system, the second precompressed rotor-support-foundation system are laid respectively At stator module two ends, and in mirror alignment;First precompressed rotor-support-foundation system, the second precompressed rotor-support-foundation system and stator are coaxially socketed On the rotating shaft, the stator be open circles tubulose metallic matrix, cut out on the excircle in the middle of metallic matrix six it is identical The rectangle plane of size, one axially distributed groove is cut out every two rectangle planes respectively, and the position of groove is arranged on phase Adjacent two junctions of plane, set three road grooves altogether, and the two ends of groove are provided with the semicircle perforate equal with groove width;In every twice groove Between two rectangle planes on paste two rectangular piezoelectric ceramic pieces based on d31 effects respectively, form an exciting unit; Offered respectively in bearing hole, bearing hole at the two ends of stator and be laid with bearing respectively;
Used as present invention further optimization, the first precompressed rotor-support-foundation system, the second precompressed rotor-support-foundation system include rotor, friction material Material, silicon rubber spring, gland and locking nut, wherein, rotor is pasted with friction material, silicon rubber bullet with the side of stator contact Spring, gland, locking nut are successively set on the opposite side of rotor, and rotor, silicon rubber spring, gland are socketed in rotary shaft On, silicon rubber spring, gland are pressed on rotor by coupling between locking nut and rotary shaft;
As present invention further optimization, six rectangles of formed objects are cut out on the excircle in the middle of metallic matrix and is put down Face, six rectangle planes are uniformly distributed in 120 degree two-by-two;Uniformly three strips are offered on the metallic matrix of stator to cut Groove, the two ends of groove are provided with the semicircle perforate equal with groove width, for regulation motor torsional frequency, and each two strip Two rectangle planes are provided between grooving;
It is viscous along stator shaft orientation respectively on two rectangle planes between described every twice groove as present invention further optimization Two rectangular piezoelectric ceramic pieces based on d31 effects of patch, form an exciting unit, the piezoelectric ceramic piece of all exciting units Polarised direction is directed to the center of circle or away from the center of circle;Apply phase respectively between two rectangular piezoelectric ceramic pieces of each exciting unit Potential difference is 90 ° of sinusoidal excitation voltage or cosine driving voltage, and symmetric vibration mode and antisymmetry for inspiring unit are shaken Dynamic model state, three groups of exciting units are eventually exhibited as 1 rank longitudinal vibration mode of stator body along the circumferential synthetic incentive effect of stator With 2 rank torsion modes;
Used as present invention further optimization, the described bearing hole opened up respectively at the two ends of stator is stepped shaft bearing bore, The first journal bearing, the second journal bearing are laid with respectively in bearing hole, and equally distributed cutting is offered on two end faces of stator Groove.
By above technical scheme, relative to prior art, the invention has the advantages that:
Stator of the invention is open circles tubulose metallic matrix, and six formed objects are cut out on the excircle in the middle of metallic matrix Rectangle plane, the rectangular piezoelectric ceramic piece based on d31 effects is pasted respectively, indulged for inspiring 1 rank needed for stator base To mode of oscillation and 2 rank torsion modes, so as to avoid using the torsional oscillation potsherd based on d15 effects, in the middle of motor stator 3 strip groovings are evenly distributed with, and each strip grooving is located at two neighboring rectangle plane middle, for adjusting electricity Torsional vibration frequency, can be conveniently adjusted extensional vibration and the torsional frequency uniformity of motor.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the assembly structure figure of the preferred embodiments of the present invention;
Fig. 2 is the piezoelectric ceramics polarization distribution and electric excitation conceptual scheme of the preferred embodiments of the present invention;
Fig. 3 is the operation mode of paster longitudinal-torsional compound ultrasonic motor proposed by the present invention, and wherein a is represented and is distributed in the stator The 2 rank torsional oscillation mode vibration shapes, b represents distribution 1 rank longitudinal vibration Mode Shape in the stator;
In figure:1 is rotary shaft, and 2 is locking nut, and 3 is gland, and 4 is rotor, and 5 is friction material, and 6 is grooving, and 7 is stator, 8 It is strip grooving, 9 is rectangular piezoelectric ceramic piece, and 10 is bearing, and 11 is silicon rubber spring.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These accompanying drawings are simplified schematic diagram, only with Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant with the present invention.
As shown in figure 1, a kind of rod-type paster longitudinal-torsional compound ultrasonic motor of the invention, including stator 7 and rotor assembly, Wherein, rotor assembly include the first precompressed rotor-support-foundation system, the second precompressed rotor-support-foundation system and rotary shaft 1, the first precompressed rotor-support-foundation system, Second precompressed rotor-support-foundation system is laid in stator module two ends respectively, and in mirror alignment;First precompressed rotor-support-foundation system, the second precompressed Rotor-support-foundation system and stator are coaxially socketed in rotary shaft, and the stator is open circles tubulose metallic matrix, in metallic matrix Between excircle on cut out six rectangle planes of formed objects, every two rectangle planes cut out respectively together it is axially distributed Groove, and the position of groove is arranged on the junction of two neighboring plane, and three road grooves are set altogether, and the two ends of groove are provided with equal with groove width Semicircle perforate;Two Rectangular piezoelectrics based on d31 effects are pasted on two rectangle planes between every twice groove respectively Potsherd 9, forms an exciting unit;Offered respectively in bearing hole, bearing hole at the two ends of stator and be laid with bearing respectively 10;
Used as present invention further optimization, the first precompressed rotor-support-foundation system, the second precompressed rotor-support-foundation system include rotor 4, friction Material 5, silicon rubber spring 11, gland 3 and locking nut 2, wherein, rotor is pasted with friction material with the side of stator contact, Silicon rubber spring, gland, locking nut are successively set on the opposite side of rotor, and rotor, silicon rubber spring, gland are socketed in In rotary shaft, silicon rubber spring, gland are pressed on rotor by coupling between locking nut and rotary shaft;
As present invention further optimization, six rectangles of formed objects are cut out on the excircle in the middle of metallic matrix and is put down Face, six rectangle planes are uniformly distributed in 120 degree two-by-two;Uniformly three strip groovings are offered on the metallic matrix of stator 8, the two ends of groove are provided with the semicircle perforate equal with groove width, for regulation motor torsional frequency, and each two strip Two rectangle planes are provided between grooving;
Shown in Fig. 2-Fig. 3, as present invention further optimization, on two rectangle planes between described every twice groove respectively Two rectangular piezoelectric ceramic pieces based on d31 effects are pasted along stator shaft orientation, an exciting unit is formed, all exciting units The polarised direction of piezoelectric ceramic piece is directed to the center of circle or away from the center of circle;Two rectangular piezoelectric ceramic pieces of each exciting unit it Between apply the sinusoidal excitation voltage or cosine driving voltage that phase difference is 90 ° respectively, the symmetric vibration mould for inspiring unit State and antisymmetric vibration mode, three groups of exciting units are eventually exhibited as 1 rank of stator body along the circumferential synthetic incentive effect of stator Longitudinal vibration mode and 2 rank torsion modes;
Time and spatially phase difference is 90 ° of 1 rank longitudinal vibration mode and the synthesis energy of 2 rank torsion modes in stator Enough give directions stator faces and produce elliptic motion, for driving rotor to rotate;
Used as present invention further optimization, the described bearing hole opened up respectively at the two ends of stator is stepped shaft bearing bore, The first journal bearing, the second journal bearing are laid with respectively in bearing hole, and equally distributed cutting is offered on two end faces of stator Groove 6.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein(Including technology art Language and scientific terminology)With with the application art in those of ordinary skill general understanding identical meaning.Should also Understand, those terms defined in such as general dictionary should be understood that the meaning having with the context of prior art The consistent meaning of justice, and unless defined as here, will not be with idealizing or excessively formal implication be explained.
The implication of "and/or" described herein refers to the simultaneous situation of respective individualism or both and wraps Including including.
The implication of " connection " described herein can be that being directly connected between part can also be passed through between part Other parts are indirectly connected with.
With above-mentioned according to desirable embodiment of the invention as enlightenment, by above-mentioned description, relevant staff is complete Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention Property scope is not limited to the content on specification, it is necessary to its technical scope is determined according to right.

Claims (5)

1. a kind of rod-type paster longitudinal-torsional compound ultrasonic motor, including stator and rotor assembly, wherein, rotor assembly includes first Precompressed rotor-support-foundation system, the second precompressed rotor-support-foundation system and rotary shaft, the first precompressed rotor-support-foundation system, the second precompressed rotor-support-foundation system difference cloth Stator module two ends are located at, and in mirror alignment;First precompressed rotor-support-foundation system, the second precompressed rotor-support-foundation system and the equal coaxial sleeve of stator Connect on the rotating shaft, it is characterised in that:The stator is open circles tubulose metallic matrix, on the excircle in the middle of metallic matrix Six rectangle planes of formed objects are cut out, one axially distributed groove is cut out respectively every two rectangle planes, and groove Position is arranged on the junction of two neighboring plane, and three road grooves are set altogether;Divide on two rectangle planes between every twice groove Nian Tie not two rectangular piezoelectric ceramic pieces based on d31 effects, one exciting unit of formation;Offered respectively at the two ends of stator Bearing is laid with respectively in bearing hole, bearing hole.
2. rod-type paster longitudinal-torsional compound ultrasonic motor according to claim 1, it is characterised in that:First precompressed rotor system System, the second precompressed rotor-support-foundation system include rotor, friction material, silicon rubber spring, gland and locking nut, wherein, rotor with The side of stator contact is pasted with friction material, and silicon rubber spring, gland, locking nut are successively set on the opposite side of rotor, And rotor, silicon rubber spring, gland are socketed on the rotating shaft, silicon rubber spring, gland by locking nut and rotary shaft it Between connection be pressed on rotor.
3. rod-type paster longitudinal-torsional compound ultrasonic motor according to claim 1, it is characterised in that:In the middle of metallic matrix Excircle on cut out six rectangle planes of formed objects, six rectangle planes are uniformly distributed in 120 degree two-by-two;In stator Three strip groovings uniformly are offered on metallic matrix, the two ends of groove are provided with the semicircle perforate equal with groove width, for adjusting Economize on electricity is provided with two rectangle planes between torsional vibration frequency, and each two strip grooving.
4. rod-type paster longitudinal-torsional compound ultrasonic motor according to claim 1, it is characterised in that:Between every twice groove Two rectangle planes on paste two rectangular piezoelectric ceramic pieces based on d31 effects along stator shaft orientation respectively, form one and swash Unit is encouraged, the polarised direction of the piezoelectric ceramic piece of all exciting units is directed to the center of circle or away from the center of circle;Each exciting unit Two rectangular piezoelectric ceramic pieces between apply the sinusoidal excitation voltage or cosine driving voltage that phase difference is 90 ° respectively, be used for The symmetric vibration mode and antisymmetric vibration mode of unit are inspired, three groups of exciting units are along the circumferential synthetic incentive effect of stator It is eventually exhibited as the 1 rank longitudinal vibration mode and 2 rank torsion modes of stator body.
5. rod-type paster longitudinal-torsional compound ultrasonic motor according to claim 1, it is characterised in that:It is described in stator The bearing hole that two ends open up respectively is to be laid with the first journal bearing, the second radial axle respectively in stepped shaft bearing bore, bearing hole Hold, equally distributed grooving is offered on two end faces of stator.
CN201611266917.1A 2016-12-31 2016-12-31 A kind of rod-type paster longitudinal-torsional compound ultrasonic motor Pending CN106936333A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108551278A (en) * 2018-03-06 2018-09-18 南京航空航天大学 A kind of patch type counter rotating birotor ultrasonic motor

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1667934A (en) * 2005-04-08 2005-09-14 清华大学 Composite ultrasonic micromotor with slotted metal square column piezoelectric sheet
CN101311650A (en) * 2007-05-23 2008-11-26 海尔集团公司 Fastening and loading device for ice maker container
CN101777853A (en) * 2010-01-12 2010-07-14 南京航空航天大学 d31-effect based unidirectional chip longitudinal-torsional compound ultrasonic motor
CN103354430A (en) * 2013-06-28 2013-10-16 南京航空航天大学 Flexible installation fixing apparatus for minitype mode-conversion type ultrasonic motor
CN104124893A (en) * 2014-07-21 2014-10-29 上海交通大学 Grooving type longitrorse compound ultrasonic motor
CN105305875A (en) * 2015-11-16 2016-02-03 南京航空航天大学 Rib plate displacement type longitudinal-torsional composite ultrasonic motor
CN105305874A (en) * 2015-11-16 2016-02-03 南京航空航天大学 Rib plate-excited displacement type longitudinal-torsional composite ultrasonic motor
CN206422710U (en) * 2016-12-31 2017-08-18 南京航空航天大学 A kind of rod-type paster longitudinal-torsional compound ultrasonic motor

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1667934A (en) * 2005-04-08 2005-09-14 清华大学 Composite ultrasonic micromotor with slotted metal square column piezoelectric sheet
CN101311650A (en) * 2007-05-23 2008-11-26 海尔集团公司 Fastening and loading device for ice maker container
CN101777853A (en) * 2010-01-12 2010-07-14 南京航空航天大学 d31-effect based unidirectional chip longitudinal-torsional compound ultrasonic motor
CN103354430A (en) * 2013-06-28 2013-10-16 南京航空航天大学 Flexible installation fixing apparatus for minitype mode-conversion type ultrasonic motor
CN104124893A (en) * 2014-07-21 2014-10-29 上海交通大学 Grooving type longitrorse compound ultrasonic motor
CN105305875A (en) * 2015-11-16 2016-02-03 南京航空航天大学 Rib plate displacement type longitudinal-torsional composite ultrasonic motor
CN105305874A (en) * 2015-11-16 2016-02-03 南京航空航天大学 Rib plate-excited displacement type longitudinal-torsional composite ultrasonic motor
CN206422710U (en) * 2016-12-31 2017-08-18 南京航空航天大学 A kind of rod-type paster longitudinal-torsional compound ultrasonic motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108551278A (en) * 2018-03-06 2018-09-18 南京航空航天大学 A kind of patch type counter rotating birotor ultrasonic motor
CN108551278B (en) * 2018-03-06 2024-04-30 南京航空航天大学 Patch type abnormal-direction rotating double-rotor ultrasonic motor

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