CN208924138U - Mode conversion dual-rotor ultrasonic motor based on triangular displacement amplification - Google Patents
Mode conversion dual-rotor ultrasonic motor based on triangular displacement amplification Download PDFInfo
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- CN208924138U CN208924138U CN201821276603.4U CN201821276603U CN208924138U CN 208924138 U CN208924138 U CN 208924138U CN 201821276603 U CN201821276603 U CN 201821276603U CN 208924138 U CN208924138 U CN 208924138U
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 17
- 230000003321 amplification Effects 0.000 title claims abstract description 14
- 238000003199 nucleic acid amplification method Methods 0.000 title claims abstract description 14
- 239000011159 matrix material Substances 0.000 claims abstract description 36
- 239000000919 ceramic Substances 0.000 claims abstract description 17
- 230000008859 change Effects 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims 1
- 239000000758 substrate Substances 0.000 claims 1
- 238000002604 ultrasonography Methods 0.000 abstract description 12
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 230000010287 polarization Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The utility model discloses a kind of mode conversion birotor ultrasonic motor based on triangular displacement amplification, birotor ultrasonic motor includes stator module, the first rotor and the second rotor；Stator module includes metallic matrix, the first driving end, the second driving end and first to third piezoelectric ceramic piece；First driving end, the second driving end include threaded rod, first to third trident driving head, disk and nut.The utility model uses triangular displacement enlarger, has the function of reinforcing delivery efficiency；The spring prepressing device used when having cast out conventional ultrasound design of electrical motor, structure are more compact；There is extraordinary symmetry simultaneously, the symmetry in this structure control characteristic and impedance operator is conducive to the controller design of motor.
Description
Technical field
The utility model relates to ultrasound electric machine field more particularly to a kind of double turns of mode conversions based on triangular displacement amplification
Sub- ultrasound electric machine.
Background technique
Piezoelectric ceramic piece is a kind of novel functional material, can convert mutually mechanical energy and electric energy.It is made pottery using piezoelectricity
The inverse piezoelectric effect of porcelain can be designed into piezoelectric actuator to obtain mechanical output.Although piezoelectric ceramic piece can export
Biggish power, but due to the limitation of output displacement, be unable to satisfy the engineering field of larger displacement requirement, want under normal conditions
It works using enlarger or under resonance condition.The piezoelectric actuator of disresonance type generallys use enlarger contraposition shift-in
Row amplification, such as triangular displacement enlarger, amplification factor is only related with the tilt angle of slash.
The piezoelectric actuator of resonant mode amplifies output displacement using resonance principle, such as ultrasound electric machine, utilizes piezoelectricity
The inverse piezoelectric effect excitation ultrasound of material vibrates, and by frictional drive, the micro breadth oscillation of elastomer is converted into the macro of rotor
Rotary motion is seen, mechanical energy output is converted electrical energy into.Mode conversion type ultrasound electric machine is a kind of with unidirectional output characteristic
Ultrasound electric machine, general only to need a longitudinal vibration exciting unit that can obtain indulging for particle at contact point by mode conversion structure curved
Complex vibration has many advantages, such as simple structure, convenient control, output power.
Operation mode planning is designed when most of design of ultrasound electric machine at this stage is to resonance, by displacement equations machine
The case that structure incorporates collaborative design is less.If the planning of displacement amplifying mechanism and the operation mode of ultrasound electric machine is combined design,
It can get the output displacement of superposition, enhance output effect.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of base for defect involved in background technique
In the mode conversion birotor ultrasonic motor of triangular displacement amplification.
The utility model uses following technical scheme to solve above-mentioned technical problem:
It include stator module, the first rotor and second based on the mode conversion birotor ultrasonic motor of triangular displacement amplification
Rotor；
The stator module includes metallic matrix, the first driving end, the second driving end and first to third piezoelectric ceramics
Piece；
The metallic matrix is cylindrical, and it is recessed to be equipped with the equilateral triangle of vertex circumferentially for end face and lower end surface thereon
Slot, circumferential direction is uniformly provided with first to third mounting groove, is respectively used to setting first to third piezoelectricity and makes pottery on the wall surface of metallic matrix
Tile；
First driving end, the second driving end include threaded rod, first to third trident driving head, disk and spiral shell
It is female；
Described first to third trident driving head include the first long side, the second long side, short side, upper positioning side and lower positioning
Side, wherein the short side, upper positioning are arranged in parallel in, lower positioning；One end of short side respectively with one end of the first long side,
One end of two long sides is connected, and the other end of the first long side is connected with the one end on upper positioning side, the other end of the second long side and lower fixed
The one end on position side is connected；First long side, upper positioning side and the second long side, lower positioning frontier juncture straight line where the short side are symmetrical；
Short side and upper positioning side are located at the first long side two sides, and angle, the first long side and upper positioning side between short side and the first long side
Between angle be all larger than equal to 90 °；
The wall surface of the threaded rod is equipped with the sliding slot parallel with its axis；
The center of the disk is equipped with through-hole, and the through-hole wall is equipped with and the matched cunning of threaded rod upper hopper chute
Block, so that the disk is covered on the threaded rod, can freely up and down be slided on the threaded rod；
The threaded rod lower end at first driving end and the center of the metallic matrix upper surface are connected；First driving end circle
The lower end surface of disk is equipped with the equilateral triangle connected in star of vertex circumferentially；The first of first driving end is to third trident driving head
It is upper positioning while, it is lower positioning while respectively correspond be arranged in first driving end disc lower end surface equilateral triangle connected in star three sides, gold
In three sides for belonging to the equilateral triangle connected in star of matrix upper surface；First driving end is arranged in the nut at the first driving end
Threaded rod on disk with the first driving end is threadedly coupled, for providing pretightning force, making the first of the first driving end to third
Trident driving head is vertically arranged between the disk lower end surface and metallic matrix upper surface at the first driving end；
The threaded rod upper end at second driving end and the center of the metallic matrix lower end surface are connected；Second driving end circle
The upper surface of disk is equipped with the equilateral triangle connected in star of vertex circumferentially；The first of second driving end is to third trident driving head
Upper positioning respectively corresponds three sides that the equilateral triangle connected in star of metallic matrix lower end surface is arranged in, the second drive in, lower positioning
In three sides of moved end disk upper surface equilateral triangle connected in star；Second driving end is arranged in the nut at the second driving end
Threaded rod under disk with the second driving end is threadedly coupled, for providing pretightning force, making the first of the second driving end to third
Trident driving head is vertically arranged between metallic matrix lower end surface and the disk upper surface at the second driving end；
The first rotor, the second rotor are cylindrical, and inner wall is equipped with circumferential groove；
The first rotor covers at first driving end first to outside third trident driving head, the in the first driving end
One is embedded in the circumferential groove on the first rotor inner wall to the short side of third trident driving head；
Second rotor covers at second driving end first to outside third trident driving head, the in the second driving end
One is embedded in the circumferential groove in the second rotor inner wall to the short side of third trident driving head；
Described first is correspondingly arranged at described first in third mounting groove to third piezoelectric ceramic piece, equal through-thickness
Polarization, direction are directed toward the center of circle, are in three rank longitudinal vibration mode for connecing external drive signal to motivate stator module.
The further side of optimization of the mode conversion birotor ultrasonic motor amplified as the utility model based on triangular displacement
The range of case, the angle between first long side and upper positioning side is 90 ° -135 °.
The invention also discloses a kind of works of mode conversion birotor ultrasonic motor that should be amplified based on triangular displacement
Make method, the course of work of the stator module and the first rotor is as follows:
Apply sinusoidal signal simultaneously to first to third piezoelectric ceramic piece, so that stator module is in three rank longitudinal vibrations；At this point,
Inspired in the first driving end under mode conversion effect first to third trident driving head single order bending vibration；
The direction of displacement of particle and the direction of displacement of particle on metallic matrix upper surface on first driving end disc on the contrary, by
This, which generates triangle amplification, makes the first driving end first to the bending amplitude of third trident driving head be strengthened, and drives first
Under the compound action that the mode conversion and triangle of moved end first to third trident driving head are amplified, axial movement is transformed into first
The tangential motion at end first to third trident driving head short side contact point is driven, contact resultant direction is directed toward the center of circle；
Due to the arranged off-centre at the first driving end first to third trident driving head, contact force generates rotating torque and promotes the
One rotor rotates.
The utility model compared with the prior art by using the above technical solution, has following technical effect that
Ultrasound electric machine uses patch type structure in the utility model, and piezoelectric ceramic piece works under d31 mode, compared to folder
Heart type structure, it is readily replaceable when potsherd damages, while the structures such as pretension bolt are eliminated, and it is easy to assembly, it is easy to miniature
Change；Ultrasound electric machine structure in the utility model has an extraordinary symmetry, in this structure control characteristic and impedance operator
Symmetry be conducive to the controller design of motor；Triangular displacement enlarger is used in the utility model, has reinforcement defeated
The effect of efficiency out；The utility model has cast out the spring prepressing device used when conventional ultrasound design of electrical motor, and structure is more tight
It gathers.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of stator module in the utility model；
Fig. 3 is the structural schematic diagram of metallic matrix in the utility model；
Fig. 4 is the structural schematic diagram of trident driving head in the utility model；
Fig. 5 is the structural schematic diagram of the first rotor alternative solution of the utility model；
Fig. 6 is the piezoelectric ceramic piece polarization direction and signal applying mode of the utility model；
Fig. 7 is the driving principle schematic diagram of the utility model.
Wherein, 1- the first rotor, 2- stator module, the second rotor of 3-, 4- threaded rod, 5- nut, 6- disk, 7 tridents drive
Dynamic head, 8- metallic matrix, 9- piezoelectric ceramic piece, 10 the first rotor matrixes, 11- bolt, the second rotor matrix of 12-.
Specific embodiment
The technical solution of the utility model is described in further detail with reference to the accompanying drawing:
The utility model can be embodied in many different forms, and should not be assumed that be limited to the embodiments described herein.
On the contrary, it is thorough and complete to these embodiments are provided so that the disclosure, and this reality will be given full expression to those skilled in the art
With novel range.In the accompanying drawings, for the sake of clarity it is exaggerated component.
As shown in Figure 1, the utility model provides a kind of mode conversion birotor ultrasonic electricity based on triangular displacement amplification
Machine includes stator module, the first rotor and the second rotor.
As shown in Fig. 2, the stator module includes metallic matrix, the first driving end, the second driving end and first to the
Three piezoelectric ceramic pieces.
As shown in figure 3, the metallic matrix is cylindrical, thereon end face and lower end surface be equipped with vertex circumferentially etc.
Side triangular groove, on the wall surface of metallic matrix circumferential direction be uniformly provided with first to third mounting groove, be respectively used to setting first to
Third piezoelectric ceramic piece.
First driving end, the second driving end include threaded rod, first to third trident driving head, disk and spiral shell
It is female；
As shown in figure 4, described first to third trident driving head include the first long side, the second long side, short side, upper positioning
While and when lower positioning, wherein the short side, upper positioning are arranged in parallel in, lower positioning；One end of short side respectively with the first long side
One end, the second long side one end be connected, the other end of the first long side with it is upper positioning side one end be connected, the second long side it is another
It holds and is connected with the one end on lower positioning side；First long side, upper positioning side and the second long side, lower positioning frontier juncture are straight where the short side
Line is symmetrical；Short side and upper positioning side are located at the first long side two sides, and angle between short side and the first long side, the first long side and on
Angle between positioning side is all larger than equal to 90 °；
The wall surface of the threaded rod is equipped with the sliding slot parallel with its axis；
The center of the disk is equipped with through-hole, and the through-hole wall is equipped with and the matched cunning of threaded rod upper hopper chute
Block, so that the disk is covered on the threaded rod, can freely up and down be slided on the threaded rod.
The threaded rod lower end at first driving end and the center of the metallic matrix upper surface are connected；First driving end circle
The lower end surface of disk is equipped with the equilateral triangle connected in star of vertex circumferentially；The first of first driving end is to third trident driving head
It is upper positioning while, it is lower positioning while respectively correspond be arranged in first driving end disc lower end surface equilateral triangle connected in star three sides, gold
In three sides for belonging to the equilateral triangle connected in star of matrix upper surface；First driving end is arranged in the nut at the first driving end
Threaded rod on disk with the first driving end is threadedly coupled, for providing pretightning force, making the first of the first driving end to third
Trident driving head is vertically arranged between the disk lower end surface and metallic matrix upper surface at the first driving end.
The threaded rod upper end at second driving end and the center of the metallic matrix lower end surface are connected；Second driving end circle
The upper surface of disk is equipped with the equilateral triangle connected in star of vertex circumferentially；The first of second driving end is to third trident driving head
Upper positioning respectively corresponds three sides that the equilateral triangle connected in star of metallic matrix lower end surface is arranged in, the second drive in, lower positioning
In three sides of moved end disk upper surface equilateral triangle connected in star；Second driving end is arranged in the nut at the second driving end
Threaded rod under disk with the second driving end is threadedly coupled, for providing pretightning force, making the first of the second driving end to third
Trident driving head is vertically arranged between metallic matrix lower end surface and the disk upper surface at the second driving end.
The first rotor, the second rotor are cylindrical, and inner wall is equipped with circumferential groove；
The first rotor covers at first driving end first to outside third trident driving head, the in the first driving end
One is embedded in the circumferential groove on the first rotor inner wall to the short side of third trident driving head；
Second rotor covers at second driving end first to outside third trident driving head, the in the second driving end
One is embedded in the circumferential groove in the second rotor inner wall to the short side of third trident driving head；
Described first is correspondingly arranged at described first in third mounting groove to third piezoelectric ceramic piece, equal through-thickness
The center of circle is directed toward in polarization, direction, is in three rank longitudinal vibrations for connecing external drive signal to motivate the first driving end, the second driving end
Mode.
The range of angle between first long side and upper positioning side is 90 ° -135 °.
As shown in figure 5, the first rotor, the second rotor can also be substituted using the structure in figure for the ease of processing, the
One rotor matrix and the second rotor matrix match, and are fixed with bolt, form the groove on inner wall.
Fig. 6 show the reversal of polarization and pumping signal applying mode of the utility model piezoelectric ceramic piece, three pieces piezoelectricity pottery
The center of circle is directed toward in the polarization of the equal through-thickness of tile 9, direction, by applying sinusoidal signal to motivate three rank longitudinal vibration mould of stator module
State.
Now in conjunction with Fig. 7 to the utility model stator module and first driving end working method be illustrated, to first to
Third piezoelectric ceramic piece applies sinusoidal signal simultaneously, so that stator module is in three rank longitudinal vibrations；At this point, under mode conversion effect
Inspire in the first driving end first to third trident driving head single order bending vibration；The displacement side of particle on first driving end disc
To the direction of displacement with particle on metallic matrix upper surface on the contrary, thus generate triangle amplification make the first driving end first to
The bending amplitude of third trident driving head is strengthened, first driving end first to third trident driving head mode conversion and
Under the compound action of triangle amplification, axial movement is transformed into the first driving end first to third trident driving head short side contact point
The tangential motion at place, contact resultant direction are directed toward the center of circle.Due to the eccentric cloth at the first driving end first to third trident driving head
Set, a part of component of contact force by the support dynamic balance along the first driving end first to third trident driving head short side direction,
Remaining part generates rotatory force by the first driving end first to third trident driving head circumferentially tangential friction dynamic balance
Square promotes the first rotor to rotate.
Bitrochanteric rotary principle is as the first rotor.
If first driving end, second driving end in first to third trident driving head arrangement about metallic matrix
Central symmetry, then two rotor assembly is oppositely oriented；If first to third trident driving head in the first driving end, the second driving end
Median plane mirror symmetry of the arrangement about metallic matrix, then the rotation direction of two rotor assembly is identical.
Those skilled in the art can understand that unless otherwise defined, all terms used herein (include skill
Art term and scientific term) there is meaning identical with the general understanding of those of ordinary skill in the utility model fields
Justice.It should also be understood that those terms such as defined in the general dictionary should be understood that with upper with the prior art
The consistent meaning of meaning hereinafter, and unless defined as here, will not with idealization or meaning too formal come
It explains.
Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into
One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model
The utility model processed, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done,
It should be included within the scope of protection of this utility model.
Claims (2)
1. the mode conversion birotor ultrasonic motor based on triangular displacement amplification, which is characterized in that include stator module, first turn
Son and the second rotor；
The stator module includes metallic matrix, the first driving end, the second driving end and first to third piezoelectric ceramic piece；
The metallic matrix is cylindrical, and end face and lower end surface are equipped with the equilateral triangle connected in star of vertex circumferentially thereon,
Circumferential direction is uniformly provided with first to third mounting groove, is respectively used to setting first to third piezoelectric ceramics on the wall surface of metallic matrix
Piece；
First driving end, the second driving end include threaded rod, first to third trident driving head, disk and nut；
Described first to third trident driving head include the first long side, the second long side, short side, upper positioning while and when lower positioning,
Wherein, the short side, upper positioning are arranged in parallel in, lower positioning；It is grown respectively with one end of the first long side, second one end of short side
The one end on side is connected, and the other end of the first long side is connected with the one end on upper positioning side, the other end of the second long side and lower positioning side
One end be connected；First long side, upper positioning side and the second long side, lower positioning frontier juncture straight line where the short side are symmetrical；Short side
It is located at the first long side two sides with upper positioning side, and between angle, the first long side and the upper positioning side between short side and the first long side
Angle be all larger than equal to 90 °；
The wall surface of the threaded rod is equipped with the sliding slot parallel with its axis；
The center of the disk is equipped with through-hole, and the through-hole wall is equipped with and the matched sliding block of threaded rod upper hopper chute, makes
The disk is obtained to cover on the threaded rod, can freely up and down slide on the threaded rod；
The threaded rod lower end at first driving end and the center of the metallic matrix upper surface are connected；First driving end disc
Lower end surface is equipped with the equilateral triangle connected in star of vertex circumferentially；The first of first driving end is upper fixed to third trident driving head
Position while, it is lower positioning while respectively correspond be arranged in first driving end disc lower end surface equilateral triangle connected in star three sides, Metal Substrates
In three sides of the equilateral triangle connected in star of body upper surface；The disk at first driving end is arranged in the nut at the first driving end
The upper threaded rod with the first driving end is threadedly coupled, for providing pretightning force, making the first of the first driving end to third trident
Driving head is vertically arranged between the disk lower end surface and metallic matrix upper surface at the first driving end；
The threaded rod upper end at second driving end and the center of the metallic matrix lower end surface are connected；Second driving end disc
Upper surface is equipped with the equilateral triangle connected in star of vertex circumferentially；The first of second driving end is upper fixed to third trident driving head
Position respectively corresponds three sides that the equilateral triangle connected in star of metallic matrix lower end surface is arranged in, lower positioning, second drives end
In three sides of disk upper surface equilateral triangle connected in star；The disk at second driving end is arranged in the nut at the second driving end
Under and the threaded rod at the second driving end be threadedly coupled, for providing pretightning force, making the first of the second driving end to third trident
Driving head is vertically arranged between metallic matrix lower end surface and the disk upper surface at the second driving end；
The first rotor, the second rotor are cylindrical, and inner wall is equipped with circumferential groove；
The first rotor covers at first driving end first to outside third trident driving head, in the first driving end first to
The short side of third trident driving head is embedded in the circumferential groove on the first rotor inner wall；
Second rotor covers at second driving end first to outside third trident driving head, in the second driving end first to
The short side of third trident driving head is embedded in the circumferential groove in the second rotor inner wall；
Described first is correspondingly arranged at described first in third mounting groove to third piezoelectric ceramic piece, equal through-thickness pole
Change, the center of circle is directed toward in direction, is in three rank longitudinal vibration mode for connecing external drive signal to motivate stator module.
2. the mode conversion birotor ultrasonic motor according to claim 1 based on triangular displacement amplification, which is characterized in that
The range of angle between first long side and upper positioning side is 90 ° -135 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821276603.4U CN208924138U (en) | 2018-08-09 | 2018-08-09 | Mode conversion dual-rotor ultrasonic motor based on triangular displacement amplification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821276603.4U CN208924138U (en) | 2018-08-09 | 2018-08-09 | Mode conversion dual-rotor ultrasonic motor based on triangular displacement amplification |
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| Publication Number | Publication Date |
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| CN208924138U true CN208924138U (en) | 2019-05-31 |
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|---|---|---|---|
| CN201821276603.4U Expired - Fee Related CN208924138U (en) | 2018-08-09 | 2018-08-09 | Mode conversion dual-rotor ultrasonic motor based on triangular displacement amplification |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109067239A (en) * | 2018-08-09 | 2018-12-21 | 南京航空航天大学 | Mode conversion dual-rotor ultrasonic motor and method based on triangular displacement amplification |
-
2018
- 2018-08-09 CN CN201821276603.4U patent/CN208924138U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109067239A (en) * | 2018-08-09 | 2018-12-21 | 南京航空航天大学 | Mode conversion dual-rotor ultrasonic motor and method based on triangular displacement amplification |
| CN109067239B (en) * | 2018-08-09 | 2024-03-29 | 南京航空航天大学 | Modal conversion type double-rotor ultrasonic motor and method based on triangular displacement amplification |
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Granted publication date: 20190531 |