CN202231635U - Double-vibrator parallel travelling wave type ultrasonic motor - Google Patents
Double-vibrator parallel travelling wave type ultrasonic motor Download PDFInfo
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- CN202231635U CN202231635U CN 201120358517 CN201120358517U CN202231635U CN 202231635 U CN202231635 U CN 202231635U CN 201120358517 CN201120358517 CN 201120358517 CN 201120358517 U CN201120358517 U CN 201120358517U CN 202231635 U CN202231635 U CN 202231635U
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- ultrasonic motor
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Abstract
The utility model relates to a double-vibrator parallel travelling wave type ultrasonic motor, which comprises a fixed base, an end base plate, vibrators, a rotor and an output shaft; the rotor is installed on the output shaft; the output shaft is installed on the fixed base and a movable base plate through a bearing; a piezoelectric component is stuck on the end face at one side of the vibrator; the end face at the other side of the vibrator is in tight contact with one end face of the rotor, so that a friction driving surface is formed; the double-vibrator parallel travelling wave type ultrasonic motor is characterized in that the vibrators are installed at two sides of the rotor respectively, so that the double-vibrator travelling wave type ultrasonic motor is formed; the two vibrators are respectively fixed on the fixed base and the end base plate; guide rods are also installed on the fixed base and the end base plate; the double-vibrator parallel travelling wave type ultrasonic motor has the advantages that: friction driving surfaces are arranged at two sides of each rotor, so that double-surface driving is formed; the driving torque is increased; therefore, the power of the ultrasonic motor is increased; the plurality of double-vibrator travelling wave type ultrasonic motors are installed side by side; the power and the driving torque of the ultrasonic motor are doubled; and the application range of the ultrasonic motor is enlarged.
Description
Technical field
The utility model belongs to a kind of supersonic frequency Piexoelectric actuator, particularly a kind of pair of parallel traveling-wave ultrasonic motor of oscillator.
Background technology
Supersonic motor is a kind of inverse piezoelectric effect of utilizing piezoelectric ceramic, makes oscillator produce the supersonic frequency vibration, and drives the New-type electric machine of mover rotation through the friction effect between oscillator and mover.Supersonic motor is compared with traditional electromagnetic machine, and it has characteristics such as simple in structure, flexible, that forms of motion is various, cut off self-lock, inertia is little, response is fast, control characteristic is good.Simultaneously, supersonic motor also has low speed, advantage that moment of torsion/volume ratio is big.But the rated power of supersonic motor is smaller, generally has only several watts.Existing rotary traveling wave type supersonic motor is made up of housing, end cap, output shaft and an oscillator and a mover; Oscillator is equivalent to the stator of common motor; Mover is equivalent to the rotor of common motor; Oscillator is fixed in the housing, and mover is fixed on the output shaft, and output shaft passes through Bearing Installation in housing and end cap.On the end face of oscillator one side, be pasted with the piezoelectric element of the annular that is made up of two groups of piezoelectric ceramic pieces, the end face of oscillator opposite side closely contacts with an end face of mover, forms friction drive surface.High frequency, alternation sin, cos signal are put on the piezoelectric element, just inspire the elastomeric flexural vibrations row of drive vibrator ripple.When refracted traveling wave is uploaded sowing time at the circumference of oscillator, the track of arbitrary particle in one-period on the oscillator circumference all is oval, and the ELLIPTIC REVOLUTION direction is counterclockwise.When mover is pressed on oscillator surface and contacts with crest; Because each crest place particle direction of rotation of oscillator is identical; Mover can be against the motion of row direction of wave travel under frictional force drives; The microcosmic elliptic motion of oscillator surface particle is converted into the macroscopic motion of rotor, final, realize that the rotation of ultrasound electric machine drives.When the row direction of wave travel changed, particle microcosmic elliptical orbit is switching-over simultaneously also, and mover moves along opposite direction.The subject matter that this supersonic motor exists is that friction drive surface is single, thereby driving moment is little, has limited its application to a certain extent.Therefore, how further to improve the power of supersonic motor, the driving moment that increases supersonic motor is the problem that people are concerned about, also need solution.
Summary of the invention
The technical problem that the utility model will solve is, overcomes the problem that driving moment is little, rated power is low that existing supersonic motor exists, and provides two oscillators that a kind of driving moment is big, rated power is high parallel traveling-wave ultrasonic motor.
The utility model comprises firm banking, end seat board, oscillator, mover and output shaft, and mover is installed on the output shaft, and output shaft passes through Bearing Installation on firm banking and mobile seat board; On the end face of oscillator one side, be pasted with piezoelectric element; The end face of oscillator opposite side closely contacts with an end face of mover, forms friction drive surface, and its special character is; Be separately installed with an oscillator in the both sides of mover; Constitute two oscillator traveling-wave ultrasonic motors, two oscillators are separately fixed on firm banking and the end seat board, on firm banking and end seat board, guide post are installed also.
Described pair of oscillator traveling-wave ultrasonic motor installed several side by side, and one or a pair of middle seat board are installed between adjacent two oscillator traveling-wave ultrasonic motors, and oscillator is separately fixed on firm banking, middle seat board and the end seat board.
On the output shaft, the outside of end seat board or a pair of in the middle of spring is installed between the seat board, make the certain pressure of maintenance between oscillator and the mover.
The advantage of the utility model is:
1, be separately installed with an oscillator in the both sides of mover, constitute two oscillator traveling-wave ultrasonic motors, all there is a friction drive surface both sides of each mover, form double-side driving, have increased driving moment, thereby have improved the power of supersonic motor.
2, two oscillator traveling-wave ultrasonic motors are installed a plurality ofly side by side, have significantly improved the power and the driving moment of supersonic motor, thereby have enlarged the scope of application of supersonic motor.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the structural representation of the utility model oscillator;
Fig. 4 is A-A cutaway view of Fig. 3;
Fig. 5 is the rearview of Fig. 3;
Fig. 6 is the structural representation of the utility model mover;
Fig. 7 is B-B cutaway view of Fig. 6;
Fig. 8, Fig. 9 are the structural representations of other embodiments of the utility model.
Embodiment
Embodiment 1:
Like Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 and shown in Figure 7, the utility model comprises firm banking 1, end seat board 6, oscillator 2, mover 5 and output shaft 11, and mover 5 is circular; Its two side ends is towards indent; The outer rim of end face is an annular, and this annular end face is the working surface of mover 5, and mover 5 is installed on the output shaft 11 through key 13; And can on output shaft 11, do trace and move axially, output shaft 11 is installed on firm banking 1 and the mobile seat board 6 through bearing 12; On the end face of oscillator 2 one sides, be pasted with the piezoelectric element 17 of the annular that constitutes by two groups of piezoelectric ceramic pieces; Several double wedges 16 are arranged on the end face of oscillator 2 opposite sides; So that under the situation that does not improve oscillator bending stiffness, natural frequency, effectively increase the amplitude of oscillator circumferencial direction; Described double wedge 16 is fan-shaped that the inboard is little, the outside is big, on oscillator 2, constitutes the annular working surface, and this working surface closely contacts with the working surface of mover 5, forms friction drive surface, drives mover 5 rotations; Be separately installed with an oscillator 2 in the both sides of mover 5; All there is a friction drive surface both sides that are mover 5; Drive mover 5 rotations, constitute two oscillator traveling-wave ultrasonic motors, to increase driving moment; Improve the power output of supersonic motor, two oscillator 2 usefulness screws 7 are separately fixed on firm banking 1 and the end seat board 6; On firm banking 1 and end seat board 6, guide post 3 is installed also; The end of guide post 3 is equipped with clamp ring 4; In case not-go-end portion seat board 6 comes off from guide post 3; Described guide post 3 has two, and 3 pairs of end seat boards 6 of guide post play supporting and guide effect, and end seat board 6 can be done trace and move axially on guide post 3 and output shaft 11; Output at output shaft 11 is equipped with clamp ring 14, and on output shaft 11, the outside of end seat board 6 is equipped with spring 10, described spring 10 is a pair of patellate spring plate; A pair of patellate spring plate is oppositely arranged, and promptly two patellate spring plates are buckled together, and spring 10 usefulness packing rings 9 are fixed on the output shaft 11 with nut 8; Between spring 10 and bearing 12, compacting ring 15 is installed also; Spring 10 is formed the axial compressive force adjusting device with nut 8, through adjustment nut 8, changes the deflection of spring 10; Can adjust the axial location of end seat board 6, and then the pressure of 5 of adjustment oscillator 2 and rotors.
Type of drive of the utility model and operation principle are identical with prior art; The operation mode of oscillator 2 is the out-of-plane bending mode of pairwise orthogonal; Under in sine, cosine signal, encouraging; The movement locus of oscillator 2 surface particles is oval, and the surface forms the row ripple, relies on 5 rotations of friction-driven mover.
Embodiment 2:
As shown in Figure 8, its structure such as embodiment 1, difference is; Described pair of oscillator traveling-wave ultrasonic motor installed several side by side; The quantity of two oscillator traveling-wave ultrasonic motors is not limit, when the axial arrangement size allows, can install a plurality of, to increase the power and the driving moment of supersonic motor; In the present embodiment, two oscillator traveling-wave ultrasonic motors are installed 3 side by side; Seat board 18 in the middle of between adjacent two oscillator traveling-wave ultrasonic motors, being equipped with one; Middle seat board 18 can be done trace and move axially on guide post 3 and output shaft 11; Oscillator 2 usefulness screws 7 are separately fixed on firm banking 1, middle seat board 18 and the end seat board 6, constitute parallel traveling-wave ultrasonic motor.
Embodiment 3:
As shown in Figure 9, its structure such as embodiment 1, difference is; Described pair of oscillator traveling-wave ultrasonic motor installed several side by side; The quantity of two oscillator traveling-wave ultrasonic motors is not limit, when the axial arrangement size allows, can install a plurality of, to increase the power and the driving moment of supersonic motor; In the present embodiment, two oscillator traveling-wave ultrasonic motors are installed 3 side by side; A pair of middle seat board 23 is installed between adjacent two oscillator traveling-wave ultrasonic motors, and oscillator 2 usefulness screws 7 are separately fixed on firm banking 1, middle seat board 23 and the end seat board 6, constitute parallel traveling-wave ultrasonic motor; On the output shaft 21, each is equipped with spring 10 between to middle seat board 23, spring 10 is a pair of patellate spring plate, a pair of patellate spring plate is oppositely arranged; Packing ring 20 and nut 19 are installed on guide post 22; Spring 10 is formed the axial compressive force adjusting device with nut 19, through adjustment nut 19, changes the deflection of spring 10; The axial location of seat board 23, end seat board 6 in the middle of can adjusting, and then the pressure of 5 of adjustment oscillator 2 and rotors.
Claims (3)
1. two parallel traveling-wave ultrasonic motor of oscillator, it comprises firm banking, end seat board, oscillator, mover and output shaft, mover is installed on the output shaft; Output shaft on firm banking and mobile seat board, is pasted with piezoelectric element through Bearing Installation on the end face of oscillator one side, the end face of oscillator opposite side closely contacts with an end face of mover; Form friction drive surface; It is characterized in that, be separately installed with an oscillator in the both sides of mover, constitute two oscillator traveling-wave ultrasonic motors; Two oscillators are separately fixed on firm banking and the end seat board, on firm banking and end seat board, guide post are installed also.
2. the parallel traveling-wave ultrasonic motor of pair oscillator according to claim 1; It is characterized in that; Described pair of oscillator traveling-wave ultrasonic motor installed several side by side; One or a pair of middle seat board are installed between adjacent two oscillator traveling-wave ultrasonic motors, and oscillator is separately fixed on firm banking, middle seat board and the end seat board.
3. the parallel traveling-wave ultrasonic motor of pair oscillator according to claim 1 and 2 is characterized in that, on the output shaft, the outside of end seat board or a pair of in the middle of spring is installed between the seat board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120358517 CN202231635U (en) | 2011-09-23 | 2011-09-23 | Double-vibrator parallel travelling wave type ultrasonic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120358517 CN202231635U (en) | 2011-09-23 | 2011-09-23 | Double-vibrator parallel travelling wave type ultrasonic motor |
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| Publication Number | Publication Date |
|---|---|
| CN202231635U true CN202231635U (en) | 2012-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120358517 Expired - Fee Related CN202231635U (en) | 2011-09-23 | 2011-09-23 | Double-vibrator parallel travelling wave type ultrasonic motor |
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| CN (1) | CN202231635U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117674A (en) * | 2013-03-16 | 2013-05-22 | 哈尔滨工业大学 | Double-vibrator combined type precise positioning ultrasonic motor excited by ultrasonic vibrators |
| CN103117675A (en) * | 2013-03-16 | 2013-05-22 | 哈尔滨工业大学 | Multi-vibrator combined large-thrust precision positioning ultrasonic motor excited by ultrasonic vibrators |
| CN114696656A (en) * | 2022-05-31 | 2022-07-01 | 南京航达超控科技有限公司 | Four-stator-rotor serial ultrasonic motor |
-
2011
- 2011-09-23 CN CN 201120358517 patent/CN202231635U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117674A (en) * | 2013-03-16 | 2013-05-22 | 哈尔滨工业大学 | Double-vibrator combined type precise positioning ultrasonic motor excited by ultrasonic vibrators |
| CN103117675A (en) * | 2013-03-16 | 2013-05-22 | 哈尔滨工业大学 | Multi-vibrator combined large-thrust precision positioning ultrasonic motor excited by ultrasonic vibrators |
| CN103117675B (en) * | 2013-03-16 | 2015-11-25 | 哈尔滨工业大学 | The high thrust precision positioning ultrasound electric machine of many element combination formula ultrasonic vibrator excitation |
| CN103117674B (en) * | 2013-03-16 | 2016-03-02 | 哈尔滨工业大学 | The precision positioning ultrasound electric machine of two element combination formula ultrasonic vibrator excitation |
| CN114696656A (en) * | 2022-05-31 | 2022-07-01 | 南京航达超控科技有限公司 | Four-stator-rotor serial ultrasonic motor |
| CN114696656B (en) * | 2022-05-31 | 2022-08-23 | 南京航达超控科技有限公司 | Four-stator-rotor series ultrasonic motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20120923 |