CN100336295C - Vibration conversion type ultrasonic motor based on half wave combined bar piezoclectric vibrator - Google Patents
Vibration conversion type ultrasonic motor based on half wave combined bar piezoclectric vibrator Download PDFInfo
- Publication number
- CN100336295C CN100336295C CNB031006078A CN03100607A CN100336295C CN 100336295 C CN100336295 C CN 100336295C CN B031006078 A CNB031006078 A CN B031006078A CN 03100607 A CN03100607 A CN 03100607A CN 100336295 C CN100336295 C CN 100336295C
- Authority
- CN
- China
- Prior art keywords
- stator
- motor
- rotor
- piezoelectric
- vibrator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The present invention relates to a vibration conversion type ultrasonic motor based on half wave combined bar piezoelectric vibrators, which belongs to the technical field of piezoelectric ultrasonic motors. The present invention is characterized in that the ultrasonic motor comprises a stator, a rotor, a prestretching mechanism and a mechanical torque output mechanism of the motor, and the length of the stator is half wavelength when corresponding working frequency is a piezoelectric vibrator of a longitudinal oscillation composite bar. The stator comprises an upper stator, a piezoelectric plate, an electrode plate and a lower stator which are tightly stacked from top to bottom, and a set of parallel oblique slots are graved on a post surface of a non-wave node point of the upper stator. The rotor comprises a friction plate and a metal disc, wherein the friction plate contacts with the upper end surface of the upper stator by friction, and the metal disc is stuck with the upper surface of the friction plate. The prestretching mechanism comprises a rubber washer, a spring leaf and a circlip, wherein the rubber washer and the spring leaf press on an upper end concave surface of the metal disc, and the circlip is clamped on the lower bearing. The mechanical torque output mechanism of the motor comprises an upper bearing, a lower bearing and a rotating shaft which penetrates through central lines of the stator and the rotor. A rotation direction of the motor is determined by the orientation of the oblique slots, and the stator of the motor is more compact because of the half wavelength vibrator.
Description
Technical field
Vibration conversion hysteria ultrasonic motor based on half-wave compound bar piezoelectric vibrator belongs to the piezoelectric ultrasound motor technical field.
Background technology
Piezoelectric ultrasound motor is fast owing to responding, energy self-locking during outage, and no electromagnetic interference is not subjected to characteristics such as electromagnetic interference effect and energy low-speed running yet, as precision element the ten minutes application prospects is arranged.Wherein there is a class to be referred to as the ultrasonic motor that mixes the transducing type, comprised two kinds of piezoelectric patches doing thickness vibration and twisting vibration in its bar-shaped oscillator, make it to produce required compressional vibration and the twisting vibration of driving rotor with the excitation stator as stator.People such as J.Tsujino then propose the another kind of simpler method of opening one group of parallel skewed slot on the oscillator cylinder at the node place, make the compressional vibration of oscillator partly be converted into twisting vibration, and the direction of rotation of rotor depends on the direction of skewed slot.The structure of this motor is simple and firm, and bigger output torque can be arranged, and is applicable to some application, but its length as the bar-shaped oscillator of stator is that to be equal to or greater than all-wave long.
Summary of the invention
The objective of the invention is to propose the more compact and more practical vibration conversion hysteria ultrasonic motor of a kind of structure based on half-wave compound bar piezoelectric vibrator.
The invention is characterized in: ultrasonic motor is by stator, rotor, and the mechanical force moment output mechanism of pre-tightening mechanism and motor is formed.Said stator comprises tight successively from top to down folded last stator, piezoelectric patches, and electrode slice and following stator, the described stator of going up is carved with one group of parallel skewed slot on the cylinder at non-node place; Said rotor comprise and the friction plate of last stator upper surface CONTACT WITH FRICTION and and friction plate on the bonding rosette in plane.Said pre-tightening mechanism comprises rubber washer and the spring leaf that is pressed on the concave surface of rosette upper end, and is stuck in the jump ring on the lower bearing; The mechanical force moment output mechanism of said motor comprises rotating shaft and the metal (upper that runs through stator and rotor centerline.The length of said stator is the half-wave wavelength that stator longitudinally vibrates.
Prototype test shows that it can operate as normal, and different skewed slot orientations make motor that different direction of rotation be arranged.
Description of drawings
The existing a kind of mixing transducing type ultrasonic motor schematic diagram of Fig. 1.
The existing a kind of vibration conversion hysteria ultrasonic motor schematic diagram of Fig. 2 based on the compound bar piezoelectric vibrator.
The vibration conversion hysteria ultrasonic motor that Fig. 3 the present invention proposes based on half-wavelength compound bar piezoelectric vibrator.
Embodiment
Comparison diagram 2 and Fig. 3, as can be seen, because parallel skewed slot is opened at the node place in Fig. 2, thus must be fixed at another node place, long thereby stator length must be all-wave.Parallel skewed slot of the present invention is opened non-node place on the stator cylinder, so can adopt half-wavelength to significantly reduce volume.
Stator 2 includes thickness vibration piezoelectric patches 201 and twisting vibration piezoelectric patches 202 in Fig. 1, and pre-tightening mechanism 3 guarantees that rotor 1 and 2 of stators have certain pretightning force.
The length of stator 4 is that all-wave is long in Fig. 2, has one group of parallel skewed slot 401 at a node place, and pre-tightening mechanism 6 guarantees that rotor 5 and 4 of stators have certain pretightning force.
Stator 7 is by the piezoelectric patches 702 of thickness direction polarization in Fig. 3, copper electrode sheet 703, under the stainless steel on stator 701 and the cylinder non-node place be carved with on the duralumin of one group of parallel skewed slot stator 704 and form, rotor 8 is by steel disk 801, frictional layer 802 is formed, and pre-tightening mechanism 9 is made up of spring leaf 901 rubber washers 902 and jump ring 903.The mechanical output mechanism 10 of motor is made up of rotating shaft 1001 and bearing 1002,1003.
Claims (1)
1, based on the vibration conversion hysteria ultrasonic motor of half-wavelength compound bar piezoelectric vibrator, the mechanical force moment output mechanism that contains rotor, stator, pre-tightening mechanism and motor, it is characterized in that, when said stator during as a longitudinal vibration compound bar piezoelectric vibrator, the length of stator is the half-wave wavelength that stator longitudinally vibrates, and this stator comprises tight successively from top to down folded last stator, piezoelectric patches, electrode slice and following stator, the described stator of going up is carved with one group of parallel skewed slot on the cylinder at non-node place; Said rotor comprise and the friction plate of last stator upper surface CONTACT WITH FRICTION and and friction plate on the bonding rosette in plane; Said pre-tightening mechanism comprises rubber washer and the spring leaf that is pressed on the concave surface of rosette upper end, and is stuck in the jump ring on the lower bearing; The mechanical force moment output mechanism of said motor comprises rotating shaft and the metal (upper that runs through stator and rotor centerline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031006078A CN100336295C (en) | 2003-01-17 | 2003-01-17 | Vibration conversion type ultrasonic motor based on half wave combined bar piezoclectric vibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031006078A CN100336295C (en) | 2003-01-17 | 2003-01-17 | Vibration conversion type ultrasonic motor based on half wave combined bar piezoclectric vibrator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1518204A CN1518204A (en) | 2004-08-04 |
| CN100336295C true CN100336295C (en) | 2007-09-05 |
Family
ID=34281236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031006078A Expired - Fee Related CN100336295C (en) | 2003-01-17 | 2003-01-17 | Vibration conversion type ultrasonic motor based on half wave combined bar piezoclectric vibrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100336295C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101777853B (en) * | 2010-01-12 | 2012-01-11 | 南京航空航天大学 | d31-effect based unidirectional chip longitudinal-torsional compound ultrasonic motor |
| CN106230307B (en) * | 2016-06-14 | 2019-03-15 | 哈尔滨工业大学 | Unsymmetric structure formula indulges the ultrasonic drawing oscillator of curved complex vibration |
| CN107834899B (en) * | 2017-11-21 | 2019-12-31 | 河南师范大学 | Method for adjusting two-phase modal frequency difference and steering of ultrasonic motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4978067A (en) * | 1989-12-22 | 1990-12-18 | Sono-Tek Corporation | Unitary axial flow tube ultrasonic atomizer with enhanced sealing |
| JPH0332376A (en) * | 1989-06-29 | 1991-02-12 | Piezo Tec Kk | Ultrasonic actuator |
| JPH11168890A (en) * | 1997-10-01 | 1999-06-22 | Asmo Co Ltd | Ultrasonic motor, ultrasonic motor stator, ultrasonic motor rotor, and manufacture of the ultrasonic motor |
-
2003
- 2003-01-17 CN CNB031006078A patent/CN100336295C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0332376A (en) * | 1989-06-29 | 1991-02-12 | Piezo Tec Kk | Ultrasonic actuator |
| US4978067A (en) * | 1989-12-22 | 1990-12-18 | Sono-Tek Corporation | Unitary axial flow tube ultrasonic atomizer with enhanced sealing |
| JPH11168890A (en) * | 1997-10-01 | 1999-06-22 | Asmo Co Ltd | Ultrasonic motor, ultrasonic motor stator, ultrasonic motor rotor, and manufacture of the ultrasonic motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1518204A (en) | 2004-08-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201742324U (en) | Rotary travelling wave ultrasonic motor | |
| CN101719735B (en) | Large-moment double-rotor stress type longitudinal-torsional composite ultrasonic motor and electric excitation method thereof | |
| CN1667934A (en) | Composite ultrasonic micromotor with slotted metal square column piezoelectric sheet | |
| JPS58192474A (en) | Piezoelectric motor | |
| CN100514832C (en) | Piezoelectric ceramic metal composite plate in-plane vibration linear ultrasound motor | |
| CN108551278A (en) | A kind of patch type counter rotating birotor ultrasonic motor | |
| CN100336295C (en) | Vibration conversion type ultrasonic motor based on half wave combined bar piezoclectric vibrator | |
| CN101789713A (en) | Ultrasonic rotary motor by using longitudinal-torsional vibration converter with holes | |
| CN101707445A (en) | Sheet and dual traveling wave type rotary ultrasonic motor and control method thereof | |
| CN102055373B (en) | Multi-rotor cylindrical high-torque ultrasonic motor | |
| CN101123405B (en) | Rotary ultrasonic motor implementation method | |
| CN103036472B (en) | Screw-type linear ultrasonic motor | |
| CN100461609C (en) | Hollow metal square column piezoelectric element composite ultrasonic micromotor | |
| Petit et al. | A piezomotor using longitudinal actuators | |
| CN206302353U (en) | A kind of surface acoustic wave rotation motor | |
| CN102013832B (en) | Ultrasonic linear motor and electric excitation method thereof | |
| CN103368457A (en) | Thin-plate-type rotating ultrasonic motor | |
| CN100511958C (en) | Ultrasonic motor for monitor cradle | |
| CN1176519C (en) | Two-way rotating longitudinal-bending standing-wave supersonic motor | |
| CN103078554A (en) | Method and devices for regulating compression force between stator and rotor of piezoelectric motor | |
| CN201682431U (en) | Sandwich-type cone piezoelectric driving and power generation integrated device | |
| Petit et al. | A multi-mode piezomotor using a flextensional coupler | |
| CN201075843Y (en) | Short column type ultrasound wave electric machine | |
| CN100356677C (en) | Minitype rod traveling wave type ultrasonic motor | |
| CN100384078C (en) | A rotary columnar ultrasound micro-motor of flexural vibration mode |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |