CN205212730U - Floor displacement type longitrorse compound ultrasonic motor - Google Patents
Floor displacement type longitrorse compound ultrasonic motor Download PDFInfo
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- CN205212730U CN205212730U CN201520906449.4U CN201520906449U CN205212730U CN 205212730 U CN205212730 U CN 205212730U CN 201520906449 U CN201520906449 U CN 201520906449U CN 205212730 U CN205212730 U CN 205212730U
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 19
- 150000001875 compounds Chemical class 0.000 title abstract description 8
- 238000005452 bending Methods 0.000 claims abstract description 19
- 239000002783 friction material Substances 0.000 claims abstract description 9
- 239000000919 ceramic Substances 0.000 claims description 34
- 239000002131 composite material Substances 0.000 claims description 17
- 239000002184 metal Substances 0.000 claims description 16
- 229920002379 silicone rubber Polymers 0.000 claims description 14
- 239000011159 matrix material Substances 0.000 claims description 13
- 238000005266 casting Methods 0.000 claims description 7
- 230000010355 oscillation Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000002604 ultrasonography Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000005284 excitation Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The utility model relates to a floor displacement type longitrorse compound ultrasonic motor, the brush motor comprises a stator component and a rotor component, the stator module both ends are equipped with the rotor subassembly respectively, and stator module and the rotor subassembly is coaxial cup joints in the axis of rotation, stator module contacts both sides with the axis of rotation and is equipped with the bearing respectively, stator module includes the stator base member, the bending vibration piezoceramics piece group and the piezoceramics piece group of shaking from north to south, the stator base member is cylindric metallic object, cylindric metallic object circumference surface evenly is equipped with a plurality of floors, bending vibration piezoceramics piece group is fixed in the floor both sides, it fixes on the stator base member between two floors to indulge the piezoceramics piece group of shaking, the rotor subassembly includes friction material, pressure device and rotor in advance, and friction material sets up between stator module and rotor, sets up to be equipped with pressure device in advance respectively in the rotor outside at stator module both ends, the utility model discloses make the motor have good controllability, the motor stator structure is simpler, and maneuverability is strong, and use and the industrialization is laid a good foundation for it.
Description
Technical field
The utility model relates to a kind of floor displacement type longitudinal-torsional composite ultrasonic motor, belongs to Ultrasonic Motor Techniques field.
Background technology
The research of longitudinal-torsional compound ultrasonic motor roughly can trace back to the end of the eighties in 20th century, and up to the present, its structure species is as many as tens kinds.Longitudinal-torsional compound ultrasonic motor contains two PZT oscillators---and longitudinal vibration and torsion oscillator, vertical, torsion oscillator inspires two mutually perpendicular vibrations respectively, and these two kinds of vibrations can regulate separately, are not coupled mutually.Longitudinal-torsional compound ultrasonic motor, compared with the ultrasound electric machine of other type, becomes one of focus of recent domestic research because having the features such as output torque is large especially, controllability is strong, rotating characteristic is consistent, low-speed stability good, dynamic response performance is good.Longitudinal-torsional compound ultrasonic motor can be divided into two groups, i.e. the multi-modal type ultrasound electric machine of longitrorse and longitrorse MODAL TRANSFORMATION OF A type ultrasound electric machine according to the interdependence between vertical, twisting die state.Nearly for decades people, to the research of two types, propose various longitudinal-torsional compound ultrasonic motor structure.1994, Ueha replaced the structure with stacked piezoelectric stator with sandwich piezoelectric stator structure and have developed the multi-modal type ultrasound electric machine of longitrorse that a diameter is 80mm; From 1992, the Tomikawa of Japanese chevron university carried out large quantifier elimination to tests of longitudinaltorsionaultrasonic ultrasonic motors.According to the design feature of motor, he is divided into multi-modal stator type and single mode stator type two class the motor of oneself development; About 2000, Tsujino was studied oblique slot type MODAL TRANSFORMATION OF A type ultrasound electric machine, and this motor only needs one group of piezoelectric vibrator excitation, but can only realize single direction rotation.
At present, there is following shortcoming in existing Hybrid transducer motor:
1, the twisting vibration of stator matrix has two kinds of energisation modes, and one is produced by the torsional oscillation piezoelectric ceramic based on d15 effect, but this torsional oscillation piezoelectric ceramic process is complicated, processing difficulties, and cost is high; Two is transformed by the extensional vibration of the longitudinal vibration Piezoelectric Ceramics Excitation based on d33 effect and obtain, and which needs to design corresponding mode converter, complex structure, and can only realize single direction rotation.
2, longitudinal-torsional compound ultrasonic motor complex structure, assembly process are more, and easily produce rigging error, cause extensional vibration and torsional frequency inconsistent.
Utility model content
The utility model provides a kind of floor displacement type longitudinal-torsional composite ultrasonic motor, there is provided a kind of rotating speed steady, and easily assemble, the floor displacement type longitudinal-torsional composite ultrasonic motor of low cost, this motor uses two groups of piezoelectric ceramic pieces to motivate longitudinal vibration mode in stator and torsion modes respectively.The rectangular piezoelectric ceramic sheet based on d31 effect is adopted to encourage floor to produce bending vibration and convert the torsional oscillation of stator matrix to, thus avoid using the torsional oscillation potsherd based on d15 effect, be arranged on various occasion easily while motor can normally be worked, thus lay a good foundation for the industrialization of this motor.
The utility model solves the technical scheme that its technical problem adopts:
A kind of floor displacement type longitudinal-torsional composite ultrasonic motor, comprise stator module and rotor assembly, described stator module two ends are respectively equipped with rotor assembly, and stator module and rotor assembly coaxial sleeve connect on the rotating shaft, described stator module contacts both sides with rotation axis and is respectively equipped with bearing, described stator module comprises stator matrix, bending vibration piezoelectric ceramic piece group and longitudinal vibration piezoelectric ceramic piece group, described stator matrix is cylindrical metal body, described cylindrical metal body circumferential surface is evenly provided with multiple floor, centre position, described floor surface offers elliptical slot, described bending vibration piezoelectric ceramic piece group is fixed on floor both sides, described longitudinal vibration piezoelectric ceramic piece group is fixed on the stator matrix between two floors, described rotor assembly comprises friction material, precompression device and rotor, and described friction material is arranged between stator module and rotor, described in be arranged on stator module two ends rotor outside be respectively equipped with precompression device,
As of the present utility model preferred further, described precompression device comprises silicon rubber and assists casting die and silicon rubber spring, and described silicon rubber assists casting die and silicon rubber spring to be successively set on from outside to inside outside rotor;
As of the present utility model preferred further, described precompression device is anchored on rotation axis by locking nut;
As of the present utility model preferred further, described cylindrical metal body circumferential surface is evenly provided with 4 floors, and the top and bottom of described cylindrical metal body is respectively equipped with 4 profile of tooth projections, and described profile of tooth projection is identical with the height of floor;
As of the present utility model preferred further, the length of described floor is greater than the height of cylindrical metal body.
By above technical scheme, relative to prior art, the utility model has following beneficial effect:
The utility model avoids the torsion piezoelectric ceramic piece of operation complexity, and for encouraging the piezoelectric ceramic cost of the twisting vibration of stator matrix low, processing technology is simple, and easy to assembly; Longitudinal vibration mode and torsion modes is encouraged respectively by bending vibration piezoelectric ceramic piece group and longitudinal vibration piezoelectric ceramic piece group, motor is made to have good controllability, motor stator structure is simpler, workable, for its application and industrialization are laid a good foundation.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the cutaway view of floor displacement type longitudinal-torsional composite ultrasonic motor of the present utility model;
Fig. 2 is stator member structure schematic diagram of the present utility model;
Fig. 3 is the structural representation of cylindrical metal body of the present utility model;
Fig. 4 is the operation mode of floor displacement type longitudinal-torsional composite ultrasonic motor stator of the present utility model, wherein: the 1 rank longitudinal vibration Mode Shape 1. referring to stator, is 2. the 2 rank torsional oscillation mode vibration shapes of stator;
Fig. 5 is the first piezoelectric ceramic polarization arrangement and the power-on method of the utility model floor displacement type longitudinal-torsional composite ultrasonic motor stator, in figure, the polarised direction of the bending vibration piezoelectric ceramic piece group of stator fin both sides is contrary, need add φ, φ+90 °, the phase signal excitation shown in φ+180 °;
Fig. 6 is the second piezoelectric ceramic polarization arrangement and the power-on method of the utility model floor displacement type longitudinal-torsional composite ultrasonic motor stator.In figure, the polarised direction of the bending vibration potsherd of stator fin both sides is identical, need add the phase signal excitation shown in φ, φ+90 °, φ.
In figure: 1. rotation axis; 2. bearing; 3. stator matrix; 4. friction material; 5. rotor; 6. silicon rubber spring; 7. casting die assisted by silicon rubber; 8. locking nut; 9. longitudinal vibration piezoelectric ceramic piece group; 10,11 bending vibration piezoelectric ceramic piece groups; 12. elliptical slots.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
As shown in Figure 1-Figure 3, the utility model provides a kind of floor displacement type longitudinal-torsional composite ultrasonic motor, comprise stator module and rotor assembly, described stator module two ends are respectively equipped with rotor assembly, and stator module and rotor assembly coaxial sleeve are connected on rotation axis 1, described stator module contacts both sides with rotation axis 1 and is respectively equipped with bearing 2, described stator module comprises stator matrix 3, bending vibration piezoelectric ceramic piece group 10 and longitudinal vibration piezoelectric ceramic piece group 9, described stator matrix 3 is cylindrical metal body, described cylindrical metal body circumferential surface is evenly provided with multiple floor, centre position, described floor surface offers elliptical slot 12, described bending vibration piezoelectric ceramic piece group 10 is fixed on floor both sides, described longitudinal vibration piezoelectric ceramic piece group 9 is fixed on the stator matrix 3 between two floors, described rotor assembly comprises friction material 4, precompression device and rotor 5, and described friction material 4 is arranged between stator module and rotor 5, described in be arranged on stator module two ends rotor 5 outside be respectively equipped with precompression device.
Described elliptical slot 12 is the setting of football pitch shape.
The bending vibration piezoelectric ceramic piece pasted by floor both sides excites 2 rank flexural vibration modes of floor, thus brings out 2 rank torsion modes of stator.The longitudinal vibration piezoelectric ceramic piece being pasted onto stator intermediate cylindrical body side surface inspires 1 rank longitudinal vibration mode of stator; The peak swing of twisting vibration and extensional vibration is all on the end face of stator.
As of the present utility model preferred further, described precompression device comprises silicon rubber and assists casting die 7 and silicon rubber spring 6, and described silicon rubber assists casting die 7 and silicon rubber spring 6 to be successively set on outside rotor 5 from outside to inside;
As of the present utility model preferred further, described precompression device is anchored on rotation axis 1 by locking nut 8;
As of the present utility model preferred further, described cylindrical metal body circumferential surface is evenly provided with 4 floors, and the top and bottom of described cylindrical metal body is respectively equipped with 4 profile of tooth projections, and described profile of tooth projection is identical with the height of floor; This kind of setting can get rid of the friction chip of stator and rotor 5 duration of work generation in time, keeps machine operation to stablize.
As of the present utility model preferred further, the length of described floor is greater than the height of cylindrical metal body.
Fig. 4 is the operation mode of the floor displacement type longitudinal-torsional composite ultrasonic motor stator that the utility model proposes.At figure, the 11 rank longitudinal vibration Mode Shape referring to stator, 2 is the 2 rank torsional oscillation mode vibration shapes of stator.
Shown in Fig. 5-Fig. 6: floor displacement type longitudinal-torsional composite ultrasonic motor of the present utility model energisation mode be: when the identical and polarised direction distributed on all floors of the polarised direction of floor both sides bending vibration potsherd is in clockwise or counterclockwise, the sinusoidal signal being respectively φ and φ ± 90 ° by two phase places encourages bending vibration piezoelectric ceramic piece group 10 and longitudinal vibration piezoelectric ceramic piece group 9 simultaneously.When the polarised direction of floor both sides bending vibration potsherd is contrary, three sinusoidal signals are utilized to encourage, the bending vibration piezoelectric ceramic piece group 10 of wherein stator fin both sides applies the sinusoidal signal that phase place is φ and φ+180 ° respectively, stator intermediate cylindrical body side surface paste and longitudinal vibration piezoelectric ceramic piece group 9 apply the sinusoidal signal that phase place is φ ± 90 °.Bending vibration piezoelectric ceramic piece group 10 wherein on stator floor motivates 1 rank flexural vibration mode of floor, because floor and mediate cylindrical are a rigid unitary, this flexural vibration mode inspires 2 rank torsion modes of mediate cylindrical through transformation energy, thus makes stator entirety present 2 rank torsion modes; Longitudinal vibration piezoelectric ceramic piece group 9 on stator intermediate cylindrical body side surface motivates 1 rank longitudinal vibration mode of mediate cylindrical, make stator entirety present 1 rank longitudinal vibration mode, the synthesis of this 2 rank torsion modes and 1 rank longitudinal vibration mode makes stator faces particle formation elliptical orbit drive rotor 5 to rotate.
In order to make motor energy steady operation, the frequency invariance of 2 rank torsion modes in stator and 1 rank longitudinal vibration mode must be ensured, namely the difference on the frequency of these two mode will control within the specific limits (this difference on the frequency is thought of as 100Hz in this design of electrical motor), in order to achieve this end, football field pattern groove is provided with in the middle of outside each floor, this football field pattern groove is large on the impact of stator longitudinal vibration model frequency, little to stator torsion modes frequency influence, by changing the size of this groove to adjust the frequency invariance of stator longitudinal vibration mode and stator torsion mode.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on specification, must determine its technical scope according to right.
Claims (5)
1. a floor displacement type longitudinal-torsional composite ultrasonic motor, comprise bearing, stator module and rotor assembly, described stator module two ends are respectively equipped with rotor assembly, and stator module and rotor assembly coaxial sleeve connect on the rotating shaft, described stator module contacts both sides with rotation axis and is respectively equipped with bearing, it is characterized in that: described stator module comprises stator matrix, bending vibration piezoelectric ceramic piece group and longitudinal vibration piezoelectric ceramic piece group, described stator matrix is cylindrical metal body, described cylindrical metal body circumferential surface is evenly provided with multiple floor, centre position, described floor surface offers elliptical slot, described bending vibration piezoelectric ceramic piece group is fixed on floor both sides, described longitudinal vibration piezoelectric ceramic piece group is fixed on the stator matrix between two floors, described rotor assembly comprises friction material, precompression device and rotor, and described friction material is arranged between stator module and rotor, described in be arranged on stator module two ends rotor outside be respectively equipped with precompression device.
2. floor displacement type longitudinal-torsional composite ultrasonic motor according to claim 1, it is characterized in that: described precompression device comprises silicon rubber and assists casting die and silicon rubber spring, described silicon rubber assists casting die and silicon rubber spring to be successively set on from outside to inside outside rotor.
3. floor displacement type longitudinal-torsional composite ultrasonic motor according to claim 2, is characterized in that: described precompression device is anchored on rotation axis by locking nut.
4. floor displacement type longitudinal-torsional composite ultrasonic motor according to claim 3, it is characterized in that: described cylindrical metal body circumferential surface is evenly provided with 4 floors, the top and bottom of described cylindrical metal body is respectively equipped with 4 profile of tooth projections, and described profile of tooth projection is identical with the height of floor.
5. floor displacement type longitudinal-torsional composite ultrasonic motor according to claim 4, is characterized in that: the length of described floor is greater than the height of cylindrical metal body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520906449.4U CN205212730U (en) | 2015-11-16 | 2015-11-16 | Floor displacement type longitrorse compound ultrasonic motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520906449.4U CN205212730U (en) | 2015-11-16 | 2015-11-16 | Floor displacement type longitrorse compound ultrasonic motor |
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| Publication Number | Publication Date |
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| CN205212730U true CN205212730U (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520906449.4U Withdrawn - After Issue CN205212730U (en) | 2015-11-16 | 2015-11-16 | Floor displacement type longitrorse compound ultrasonic motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2015
- 2015-11-16 CN CN201520906449.4U patent/CN205212730U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160504 Effective date of abandoning: 20180216 |
|
| AV01 | Patent right actively abandoned |