CN105305876A - Rib plate stress type longitudinal-torsional composite ultrasonic motor - Google Patents
Rib plate stress type longitudinal-torsional composite ultrasonic motor Download PDFInfo
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- CN105305876A CN105305876A CN201510777895.4A CN201510777895A CN105305876A CN 105305876 A CN105305876 A CN 105305876A CN 201510777895 A CN201510777895 A CN 201510777895A CN 105305876 A CN105305876 A CN 105305876A
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- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 239000000919 ceramic Substances 0.000 claims abstract description 66
- 238000005452 bending Methods 0.000 claims abstract description 18
- 238000005266 casting Methods 0.000 claims description 10
- 229920002379 silicone rubber Polymers 0.000 claims description 10
- 239000002783 friction material Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 abstract 5
- 230000010287 polarization Effects 0.000 description 9
- 238000005457 optimization Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 230000005284 excitation Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 238000002604 ultrasonography Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/10—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention relates to a rib plate stress type longitudinal-torsional composite ultrasonic motor, which comprises a stator component, a rotor component and a rotating shaft, wherein the stator component comprises a stator; the rotor component comprises a first rotor and a second rotor; the first rotor and the second rotor are respectively arranged at two ends of the stator; the first rotor, the second rotor and the stator coaxially sleeve the rotating shaft; the stator is a cylindrical metal body; a first longitudinal vibration piezoelectric ceramic chip group and a second longitudinal vibration piezoelectric ceramic chip group are arranged at two end surfaces of the metal body respectively; one side of the first longitudinal vibration piezoelectric ceramic chip group is connected with the metal body; a first friction plate is adhered to the other side of the first longitudinal vibration piezoelectric ceramic chip group; one side of the second longitudinal vibration piezoelectric ceramic chip group is connected with the metal body; a second friction plate is adhered to the other side of the second longitudinal vibration piezoelectric ceramic chip group; 2n rib plates are evenly distributed on the circumferential outer surface of the metal body; and bending vibration piezoelectric ceramic chips are adhered to the side surfaces of the rib plates. According to the rib plate stress type longitudinal-torsional composite ultrasonic motor, the piezoelectric ceramic for exciting a first-order torsional vibration in the stator part is low in cost; and the motor is high in output torque and high in maneuverability.
Description
Technical field
The present invention relates to a kind of floor stress type longitudinal-torsional composite ultrasonic motor, belong to Ultrasonic Motor Techniques field.
Background technology
Ultrasound electric machine utilizes the inverse piezoelectric effect of piezoelectric ceramic and the new type power output device of ultrasonic vibration.Compared with electromagnetic machine, there is compact conformation, low speed high torque, response fast (Millisecond), cut off self-lock, position and speeds control is good, not by the advantage such as electromagnetic interference and low noise operation.Longitudinal-torsional compound ultrasonic motor is the one in ultrasound electric machine.Longitudinal-torsional compound ultrasonic motor is made up of longitudinal vibration and torsion oscillator usually.These two oscillators inspire two orthogonal vibrations respectively, and two kinds of vibrations can regulate separately, are not coupled mutually, so the particle elliptical orbit after superposition is easy to control.Therefore, the feature of this motor is that output torque is large, controllability strong, rotating characteristic is consistent, low-speed stability good, dynamic response performance is good.But, the torsion modes of general longitudinal-torsional compound ultrasonic motor need to adopt based on
d 15the circular vibration piezoelectric ceramic of effect encourages, but this potsherd cost is very high, complex process, rate of finished products are low.1998, Ueha developed a kind of stress type longitudinal-torsional compound ultrasonic motor of dual-rotor structure, this motor based on
d 15the circular vibration piezoelectric ceramic of effect carrys out the torsion modes of exciting electric, and in addition, longitudinal vibration piezoelectric ceramic piece is positioned on stators and rotators end face by this motor respectively, considerably increases the assembly technology difficulty of motor and the use difficulty of motor.There is following shortcoming in existing stress type longitudinal-torsional motor: torsion modes wherein need to adopt based on
d 15the circular torsional oscillation potsherd of effect encourages, particularly need to adopt based on
d 15the circular torsional oscillation potsherd of effect carrys out the 1 rank torsion modes that exciting goes out motor stator, and torsional oscillation potsherd processing technology is complicated, and cost is high, thus affects motor batch low-cost production.
Summary of the invention
The invention provides a kind of floor stress type longitudinal-torsional composite ultrasonic motor, the present invention adopt production technology simpler based on
d 31the floor that the piezoelectric ceramic piece of effect comes on exciting electric stator produces flexural vibration mode, thus brings out stator generation torsion modes, forms 1 rank torsion modes required for machine operation.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of floor stress type longitudinal-torsional composite ultrasonic motor, comprise stator module, rotor assembly and rotation axis, described stator module comprises stator, described rotor assembly comprises the first rotor and the second rotor, described the first rotor and the second rotor are separately positioned on stator two ends, and the first rotor, the second rotor and stator are all socketed on the rotating shaft; Described stator is cylindrical metallic object, the both ends of the surface of described metallic object are respectively arranged with first group of longitudinal vibration piezoelectric ceramic piece and second group of longitudinal vibration piezoelectric ceramic piece, the side of described first group of longitudinal vibration piezoelectric ceramic piece is connected with metallic object, opposite side is pasted with the first friction plate, the side of second group of longitudinal vibration piezoelectric ceramic piece is connected with metallic object, and opposite side is pasted with the second friction plate; The circumferential outer surface of described metallic object is evenly distributed with 2n floor, and the side of described floor is all pasted with bending vibration piezoelectric ceramic piece, and described the first rotor and stator contact side, the second rotor and stator contact side are equipped with friction material; Described the first rotor opposite side, the second rotor opposite side are respectively equipped with precompression device, and described precompression device is locked by locking nut.
As present invention further optimization, described precompression device comprises auxiliary casting die and silicon rubber, and described the first rotor, the second rotor opposite side are disposed with silicon rubber and auxiliary casting die respectively, and silicon rubber and auxiliary casting die are all socketed on the rotating shaft;
As present invention further optimization, the surface uniform of described first friction plate, the second friction plate is laid with profile of tooth projection, and the inside/outside diameter size of described friction plate is identical with the inside/outside diameter size of longitudinal vibration piezoelectric ceramic piece;
As present invention further optimization, when described rotation axis is through stator, supported by two journal bearings;
As present invention further optimization, the circumferential outer surface of described metallic object is evenly provided with four floors, and be uniformly distributed in 90 degree between two; Described four floors are all pasted with bending vibration piezoelectric ceramic piece.
By above technical scheme, relative to prior art, the present invention has following beneficial effect:
The present invention adopt production technology simpler based on
d 31the floor that the piezoelectric ceramic piece of effect comes on exciting electric stator produces flexural vibration mode, thus bring out stator generation torsion modes, form 1 rank torsion modes required for machine operation, for encouraging the piezoelectric ceramic cost of 1 rank twisting vibration in stationary part low, motor output torque is large, workable.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structure cutaway view of the preferred embodiments of the present invention;
Fig. 2 is the vertical view of preferred embodiment of the present invention;
In Fig. 3,3a is the polarization subregion of bending vibration of the present invention pressure potsherd, and being 1. the polarised direction in A district in 3b figure, is 2. the polarised direction in B district;
Fig. 4 is the operation mode of the floor stress type longitudinal-torsional composite ultrasonic motor that the present invention proposes, 3. be the 1 rank torsion modes vibration shape be distributed in stationary part, 4. be the 2 rank longitudinal vibration Mode Shape be distributed in whole motor, wherein, 2 rank longitudinal vibration mode pitch planes are positioned on stator and rotor contact-making surface;
Fig. 5 is the first piezoelectric ceramic polarization arrangement and the electric excitation mode of the floor stress type longitudinal-torsional composite ultrasonic motor that the present invention proposes.In figure, first group of longitudinal vibration piezoelectric ceramic polarization arrangement 5. with the second group of longitudinal vibration piezoelectric ceramic polarization arrangement is 8. identical, bending vibration piezoelectric ceramic polarised direction arranges (6., 7.), then need three sinusoidal signals to encourage, the phase difference between them is φ, φ+90 ° and φ+180 ° respectively as shown in FIG.;
Fig. 6 is the second piezoelectric ceramic polarization arrangement and the electric excitation mode of the floor stress type longitudinal-torsional composite ultrasonic motor that the present invention proposes.In figure, first group of longitudinal vibration piezoelectric ceramic polarization arrangement 5. with the second group of longitudinal vibration piezoelectric ceramic polarization arrangement is 8. contrary, bending vibration piezoelectric ceramic polarised direction arranges that (6., 7.) is constant, two sinusoidal signals are only needed to encourage, phase difference between them is 90 °, is respectively φ, φ+90 ° as shown in the figure.
In figure: 1 is stator, 2 is journal bearing, and 3 is the first rotor, 4 is first group of longitudinal vibration piezoelectric ceramic piece, and 5 is second group of longitudinal vibration piezoelectric ceramic piece, and 6 is the first friction plate, 7 is friction material, 8 is the second rotor, and 9 is silicon rubber, and 10 is auxiliary casting die, 11 is locking nut, 12 is rotation axis, and 13 is bending vibration piezoelectric ceramic piece, and 14 is the second friction plate.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
As shown in Figure 1-Figure 3, the invention provides a kind of floor stress type longitudinal-torsional composite ultrasonic motor, comprise stator module, rotor assembly and rotation axis 12, described stator module comprises stator 1, described rotor assembly comprises the first rotor 3 and the second rotor 8, described the first rotor 3 and the second rotor 8 are separately positioned on stator 1 two ends, and the first rotor 3, second rotor 8 and stator 1 are all socketed on rotation axis 12, and are fixed by interference fits and otch; Described stator 1 is cylindrical metallic object, the both ends of the surface of described metallic object are respectively arranged with first group of longitudinal vibration piezoelectric ceramic piece 4 and second group of longitudinal vibration piezoelectric ceramic piece 5, the side of described first group of longitudinal vibration piezoelectric ceramic piece 4 is connected with metallic object, opposite side is pasted with the first friction plate 6, the side of second group of longitudinal vibration piezoelectric ceramic piece 5 is connected with metallic object, and opposite side is pasted with the second friction plate 14; The circumferential outer surface of described metallic object is evenly distributed with 2n floor, and the side of described floor is all pasted with bending vibration piezoelectric ceramic piece 13, and described the first rotor 3 contacts side with stator 1, the second rotor 8 contacts side with stator 1 and is equipped with friction material 7; Described the first rotor 3 opposite side, the second rotor 8 opposite side are respectively equipped with precompression device, and described precompression device is locked by locking nut 11.
As present invention further optimization, described precompression device comprises auxiliary casting die 10 and silicon rubber 9, described the first rotor 3, second rotor 8 opposite side is disposed with silicon rubber 9 and auxiliary casting die 10 respectively, and silicon rubber 9 and auxiliary casting die 10 are all socketed on rotation axis 12;
As present invention further optimization, the surface uniform of described first friction plate 6, second friction plate 14 is laid with profile of tooth projection, and the inside/outside diameter size of described friction plate is identical with the inside/outside diameter size of longitudinal vibration piezoelectric ceramic piece;
As present invention further optimization, when described rotation axis 12 is through stator 1, supported by two journal bearings 2;
As present invention further optimization, the circumferential outer surface of described metallic object is evenly provided with four floors, and be uniformly distributed in 90 degree between two; Described four floors are all pasted with bending vibration piezoelectric ceramic piece 13.
Shown in Fig. 4, piezoelectric ceramic on the floor of stator 1 part of floor stress type longitudinal-torsional composite ultrasonic motor of the present invention is two subregion bending vibration piezoelectric ceramic pieces 13, when this bending vibration piezoelectric ceramic piece 13 applying simple-sinusoidal voltage excitation, floor produces flexural vibration mode, and bringing out 1 rank torsion modes of motor stator 1, stator 1 part two end faces do rightabout twisting vibration; 2 rank longitudinal vibration mode are excited by longitudinal vibration piezoelectric ceramic piece, are distributed in whole motor, and the pitch plane of longitudinal vibration mode is positioned near rotor contact-making surface.
The piezoelectric ceramic polarization arrangement of floor stress type longitudinal-torsional composite ultrasonic motor of the present invention, first group of longitudinal vibration piezoelectric ceramic piece, 4, second group of longitudinal vibration piezoelectric ceramic piece 5 polarize arrangement then both can identical also can be contrary, every a slice bending vibration potsherd Xu Fenliangge district polarization and polarised direction is contrary, and paste four bending vibration potsherds on the stator 1 polarised direction about stator 1 geometric center axial symmetry.
Shown in Fig. 5-Fig. 6, the motivational techniques of floor stress type longitudinal-torsional composite ultrasonic motor of the present invention are: when first group of longitudinal vibration piezoelectric ceramic piece, 4, second group of longitudinal vibration piezoelectric ceramic piece 5 polarize arrangement contrary time, encourage bending vibration piezoelectric ceramic piece 13 and first group of longitudinal vibration piezoelectric ceramic piece, 4, second group of longitudinal vibration piezoelectric ceramic piece 5 by the sinusoidal signal that two phase differences are 90 ° simultaneously; When first group of longitudinal vibration piezoelectric ceramic piece, 4, second group of longitudinal vibration piezoelectric ceramic piece 5 polarize arrangement identical time, three sinusoidal signals are utilized to encourage, wherein first group of longitudinal vibration piezoelectric ceramic piece 4 and second group of longitudinal vibration piezoelectric ceramic piece 5 add the sinusoidal signal that phase difference is 180 °, phase place is designated as φ and φ+180 ° (0 °≤φ <360 °) respectively, being applied to, bending vibration piezoelectric ceramic piece 13 is then the identical sinusoidal signal of phase place, and phase place is φ ± 90 °; Bending vibration piezoelectric ceramic piece 13 excites same phase difference to be frequently 1 rank flexural vibration mode on stator 1 floor of 90 °, thus induce 1 rank torsion modes of stator 1, first, second group longitudinal vibration piezoelectric ceramic excites 2 rank longitudinal vibration mode of whole motor, thus drives rotor turns.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on specification, must determine its technical scope according to right.
Claims (5)
1. a floor stress type longitudinal-torsional composite ultrasonic motor, comprise stator module, rotor assembly and rotation axis, described stator module comprises stator, described rotor assembly comprises the first rotor and the second rotor, described the first rotor and the second rotor are separately positioned on stator two ends, and the first rotor, the second rotor and stator are all socketed on the rotating shaft; It is characterized in that: described stator is cylindrical metallic object, the both ends of the surface of described metallic object are respectively arranged with first group of longitudinal vibration piezoelectric ceramic piece and second group of longitudinal vibration piezoelectric ceramic piece, the side of described first group of longitudinal vibration piezoelectric ceramic piece is connected with metallic object, opposite side is pasted with the first friction plate, the side of second group of longitudinal vibration piezoelectric ceramic piece is connected with metallic object, and opposite side is pasted with the second friction plate; The circumferential outer surface of described metallic object is evenly distributed with 2n floor, and the side of described floor is all pasted with bending vibration piezoelectric ceramic piece, and described the first rotor and stator contact side, the second rotor and stator contact side are equipped with friction material; Described the first rotor opposite side, the second rotor opposite side are respectively equipped with precompression device, and described precompression device is locked by locking nut.
2. floor stress type longitudinal-torsional composite ultrasonic motor according to claim 1, it is characterized in that: described precompression device comprises auxiliary casting die and silicon rubber, described the first rotor, the second rotor opposite side are disposed with silicon rubber and auxiliary casting die respectively, and silicon rubber and auxiliary casting die are all socketed on the rotating shaft.
3. floor stress type longitudinal-torsional composite ultrasonic motor according to claim 2, it is characterized in that: the surface uniform of described first friction plate, the second friction plate is laid with profile of tooth projection, the inside/outside diameter size of described friction plate is identical with the inside/outside diameter size of longitudinal vibration piezoelectric ceramic piece.
4. floor stress type longitudinal-torsional composite ultrasonic motor according to claim 3, is characterized in that: when described rotation axis is through stator, supported by two journal bearings.
5. floor stress type longitudinal-torsional composite ultrasonic motor according to claim 4, is characterized in that: the circumferential outer surface of described metallic object is evenly provided with four floors, and be uniformly distributed in 90 degree between two; Described four floors are all pasted with bending vibration piezoelectric ceramic piece.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510777895.4A CN105305876B (en) | 2015-11-16 | 2015-11-16 | A kind of floor stress type longitudinal-torsional composite ultrasonic motor |
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| CN201510777895.4A CN105305876B (en) | 2015-11-16 | 2015-11-16 | A kind of floor stress type longitudinal-torsional composite ultrasonic motor |
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| CN105305876A true CN105305876A (en) | 2016-02-03 |
| CN105305876B CN105305876B (en) | 2018-02-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111555657A (en) * | 2020-06-03 | 2020-08-18 | 集美大学 | Traveling wave rotary ultrasonic motor friction plate with groove |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101719735A (en) * | 2010-01-12 | 2010-06-02 | 南京航空航天大学 | Large-moment double-rotor stress type longitudinal-torsional composite ultrasonic motor and electric excitation method thereof |
| JP2013021788A (en) * | 2011-07-08 | 2013-01-31 | Olympus Corp | Ultrasonic motor |
| CN104506079A (en) * | 2014-12-12 | 2015-04-08 | 上海大学 | Cross multi-degree-of-freedom ultrasonic motor |
| CN205212729U (en) * | 2015-11-16 | 2016-05-04 | 南京航空航天大学 | Floor stress type longitrorse compound ultrasonic motor |
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2015
- 2015-11-16 CN CN201510777895.4A patent/CN105305876B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101719735A (en) * | 2010-01-12 | 2010-06-02 | 南京航空航天大学 | Large-moment double-rotor stress type longitudinal-torsional composite ultrasonic motor and electric excitation method thereof |
| JP2013021788A (en) * | 2011-07-08 | 2013-01-31 | Olympus Corp | Ultrasonic motor |
| CN104506079A (en) * | 2014-12-12 | 2015-04-08 | 上海大学 | Cross multi-degree-of-freedom ultrasonic motor |
| CN205212729U (en) * | 2015-11-16 | 2016-05-04 | 南京航空航天大学 | Floor stress type longitrorse compound ultrasonic motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111555657A (en) * | 2020-06-03 | 2020-08-18 | 集美大学 | Traveling wave rotary ultrasonic motor friction plate with groove |
| CN111555657B (en) * | 2020-06-03 | 2021-09-21 | 集美大学 | Traveling wave rotary ultrasonic motor friction plate with groove |
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| CN105305876B (en) | 2018-02-16 |
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