CN103414373A - Single-incentive rotating ultrasonic motor - Google Patents
Single-incentive rotating ultrasonic motor Download PDFInfo
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- CN103414373A CN103414373A CN2013103739025A CN201310373902A CN103414373A CN 103414373 A CN103414373 A CN 103414373A CN 2013103739025 A CN2013103739025 A CN 2013103739025A CN 201310373902 A CN201310373902 A CN 201310373902A CN 103414373 A CN103414373 A CN 103414373A
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Abstract
The invention discloses a single-incentive rotating ultrasonic motor. A rotor comprises a rotating disc and a friction layer arranged on the surface of the rotating disc. A stator comprises an ultrasonic vibration transducer, an elliptic vibration mode converter and a friction driving block arranged at the front end of the elliptic vibration mode converter, wherein the elliptic vibration mode converter is arranged at the front end of the ultrasonic vibration transducer and is of an inclined wedge-shaped structure, the elliptic vibration mode converter can convert longitudinal ultrasonic vibration generated by the ultrasonic vibration transducer into longitudinal and bent composite ultrasonic elliptic vibration at the tail end of the elliptic vibration mode converter and on the friction driving block, and the rotor is driven to continuously rotate.
Description
Technical field
The present invention relates to utilize the ultrasound electric machine field of piezoelectric ceramic inverse piezoelectric effect, especially relate to a kind of single stimulated rotation ultrasonic motor.
Background technology
Rotary ultrasonic motor is a kind of novel electrical micro-machine that develops rapidly and apply the eighties in 20th century, to utilize the inverse piezoelectric effect of piezoelectric to realize the electric coupling apparatus that electric energy-mechanical energy is changed, by the rubbing action between stator and rotor, the macroscopic view that elastomeric micro breadth oscillation is converted to rotor rotatablely moves, and directly promotes load.Because it has that volume is little, lightweight, low-speed big, noise is little, response is fast, positioning precision is high, without electromagnetic interference and the advantage such as environmental suitability is strong, in technical fields such as medical treatment, Aero-Space, robot, MEMS, obtained increasingly extensive application.
The problems such as in existing rotary-type ultrasound electric machine, mainly adopt the outer flexural vibration mode of face to be combined into the capable ripple of end face, and drive the rotor rotation at present, the ubiquity driving moment is little, and axial volume is large, the internal-and external diameter contact zone wearing and tearing difference of rotor is large; In addition, even adopted in plane vibration mode, in order to apply the radial tightening power in face, the disk of oscillator or rotor or annulus are made two semi-discs or semicircular ring, middle by spring, be connected into disk or annulus to apply the radial tightening power in face, also be difficult at present realize large torque, and functional reliability is low.At publication number, be CN101030740A, denomination of invention is in the patent documentation of " bending-rotation ultrasonic motor of single-phase driving ", the structure that discloses a kind of body is the single-phase driving standing wave rotary ultrasonic motor of taper, this motor relies on six piezoelectric ceramic pieces that are superimposed together vertically to excite the vibration of stator, and six piezoelectric ceramic pieces rely on clamp nut and last item cover to be fixed on axis.Although this motor has the advantages such as output torque is larger, but six piezoelectric ceramic pieces of motor will mutually stagger and 60 install by the polarization subregion, its complex structure, and the screw (revolving force) because of clamp nut in the compaction process of piezoelectric ceramic piece very easily causes between piezoelectric ceramic piece and misplaces, be difficult to guarantee the specification requirement of dislocation 60 degree between adjacent piezoelectric ceramic piece; In addition, between this motor stator and rotor, be not with any positioner, this makes stator and rotor contact position precision between the two be affected, and then affects the stability of motor torque and speed; Thereby there is complex structure in this type of rotary ultrasonic motor, high to the contact position required precision between stator and rotor, manufacture is installed more difficult, the defects such as poor stability of motor torque and speed.
Summary of the invention
The invention provides a kind of novel single stimulated rotation ultrasonic motor, purpose is the deficiency existed in above-mentioned rotary ultrasonic motor in order to overcome.
Single stimulated rotation ultrasonic motor, comprise stator and rotor, and rotor comprises rotating disk and is arranged on the frictional layer of disc surfaces; Stator comprises ultrasonic vibration transducer, elliptical vibration MODAL TRANSFORMATION OF A device and friction-driven piece; Described ultrasonic vibration transducer outline is cylindrical, it comprises bolt and is set in successively back shroud, piezoelectric ceramic piece, electrode slice and the front shroud on bolt, on front shroud, be provided with and can connect with other constructional device the ring flange of use, back shroud and front shroud connect back shroud, piezoelectric ceramic piece, electrode slice and front shroud to compress by bolt, formed the power conversion part of single stimulated rotation ultrasonic motor, the ultrasonic electric energy of ultrasonic-frequency power supply output has been converted to the ultrasonic vibrational energy of ultrasonic transducer.
Described elliptical vibration MODAL TRANSFORMATION OF A device and front shroud are made into the front end of a whole installation at front shroud, perhaps utilize an additional connection double-screw bolt elliptical vibration MODAL TRANSFORMATION OF A device to be connected in to the front end of front shroud, elliptical vibration MODAL TRANSFORMATION OF A device is the inclined wedge-shaped structure, the former integral body of inclined wedge-shaped structure elliptical vibration MODAL TRANSFORMATION OF A device is cuboid, after being cut a part, ultrasonic vibration transducer axis direction one side forms the inclined wedge-shaped structure, form in two sides of inclined wedge-shaped, a cut parallel sided is not in the ultrasonic vibration transducer axis, the another side be cut becomes 3-30 degree angle with the ultrasonic vibration transducer axis.
The purpose that makes elliptical vibration MODAL TRANSFORMATION OF A device form the inclined wedge-shaped structure is in order to change the mode of oscillation of ultrasonic vibration transducer, its extensional vibration model frequency and flexural vibration mode frequency are approached or equate, existence due to inclined wedge-shaped structure elliptical vibration MODAL TRANSFORMATION OF A device, the longitudinal ultrasonic vibration that the ultrasonic vibration transducer produces is after being delivered to inclined wedge-shaped structure elliptical vibration MODAL TRANSFORMATION OF A device, end at inclined wedge-shaped structure elliptical vibration MODAL TRANSFORMATION OF A device is decomposed into a part of extensional vibration component and a part of flexural vibrations component, and two oscillating components have certain phase difference, and then be compounded to form the elliptical orbit vibration at the end of inclined wedge-shaped structure elliptical vibration MODAL TRANSFORMATION OF A device.
Described friction-driven piece is arranged on the front end of elliptical vibration MODAL TRANSFORMATION OF A device by welding, bonding or screw attachment mode, the friction-driven piece contacts with the frictional layer on rotating disk.The ring flange of ultrasonic vibration transducer is used for installing stator and precompression device, stator is connected to the single stimulated rotation ultrasonic motor of formation in aggregates with rotor, and the ultrasonic vibration transducer axis after ring flange is fixing and the angle of plane of rotor disc are 20 degree ~ 160 degree.
After the ultrasonic electric signal of ultrasonic-frequency power supply output is linked into the electrode slice of ultrasonic vibration transducer, the ultrasonic vibration transducer namely produces ultrasonic vibration, after ultrasonic vibrational energy is delivered to elliptical vibration MODAL TRANSFORMATION OF A device end from the ultrasonic vibration transducer, be converted to extensional vibration and the compound vertical curved composite ultrasonic elliptical vibratory of flexural vibrations with certain phase difference, namely be converted to the vertical curved composite ultrasonic elliptical vibratory of elliptical vibration MODAL TRANSFORMATION OF A device end; And drive the friction-driven piece and elliptical vibration MODAL TRANSFORMATION OF A device end is done ultrasonic elliptical vibratory together, and then drive rotor and carry out the continuous rotation motion.Compare single stimulated rotation ultrasonic motor of existing Introduction of Literatures, this rotary ultrasonic motor has that power capacity is large, energy conversion efficiency is high, simple in structure, easy to manufacture, cost is low, the rigidity of structure is large, control-driven system is simple and the advantage such as vibration performance is stable.
Further, described single stimulated rotation ultrasonic motor only has one group of extensional vibration piezoelectric ceramic piece.
Further, described single stimulated rotation ultrasonic motor Zhi Xu mono-road ultrasonic electric signal excitation.
The present invention has adopted mechanical oscillation MODAL TRANSFORMATION OF A mechanism the extensional vibration of ultrasonic transducer to be converted to the vertical curved composite ultrasonic elliptical vibratory of elliptical vibration MODAL TRANSFORMATION OF A device, simplified the overall structure of single stimulated rotation ultrasonic motor, greatly reduce the complexity of vibrational system, manufacture, assembly difficulty and production cost have been reduced, whole single stimulated rotation ultrasonic motor is simple in structure, easy to manufacture, is conducive to the realization of microminiaturized target; This invention only needs a road control circuit and ultrasonic electric signal to encourage in addition, the control difficulty is low, avoided two-phase or multiphase ultrasonic vibration to be compounded to form the complicated ultrasonic-frequency power supply development cost of elliptical vibration transducer, control circuit and ultrasonic-frequency power supply structure have been simplified, control circuit and ultrasonic-frequency power supply cost have been reduced, control circuit and ultrasonic-frequency power supply volume have been reduced, be easy to realize the microminiaturization of control circuit and ultrasonic-frequency power supply, integrated, improved reliability, service behaviour is more stable, has a extensive future.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is application example schematic diagram of the present invention.
Number in the figure explanation: 1. bolt, 2. back shroud, 3. piezoelectric ceramic piece, 4. electrode slice, 5. front shroud, 6. ring flange, 7. elliptical vibration MODAL TRANSFORMATION OF A device, 8. rotating disk, 9. frictional layer, 10 friction-driven pieces, 11. ultrasonic-frequency power supplies
Embodiment
Shown in Fig. 1,2, single stimulated rotation ultrasonic motor, comprise stator and rotor, and rotor comprises rotating disk 8 and is bonded in the frictional layer 9 on rotating disk 8 surfaces; Stator comprises ultrasonic vibration transducer, elliptical vibration MODAL TRANSFORMATION OF A device 6 and friction-driven piece 10; Ultrasonic vibration transducer outline is cylindrical, it comprises bolt 1 and is set in successively back shroud 2, piezoelectric ceramic piece 3, electrode slice 4 and the front shroud 5 on bolt 1, on front shroud 5, be provided with the ring flange 6 that can connect with other constructional device use, back shroud 2 and front shroud 5 connect back shroud 2, piezoelectric ceramic piece 3, electrode slice 4 and front shroud 5 to compress by bolt 1, formed the power conversion part of single stimulated rotation ultrasonic motor, the ultrasonic electric energy of ultrasonic-frequency power supply 11 outputs has been converted to the ultrasonic vibrational energy of ultrasonic vibration transducer.This list stimulated rotation ultrasonic motor only has one group of extensional vibration piezoelectric ceramic piece 3, piezoelectric ceramic transducer section diameter 30mm, and the material of piezoelectric ceramic piece 3 is PZT-8, is of a size of:
Ф 30mm * Ф 15mm * 5mm, the sheet number of piezoelectric ceramic piece 3 is 2.
Elliptical vibration MODAL TRANSFORMATION OF A device 7 and front shroud 5 are made into the front end that an one-piece parts is arranged on front shroud 5, and elliptical vibration MODAL TRANSFORMATION OF A device 7 integral body are the inclined wedge-shaped structure, and the former integral body of inclined wedge-shaped structure elliptical vibration MODAL TRANSFORMATION OF A device is cuboid, and the cross section length of side is 15
*15mm, long 40mm, after being cut a part, ultrasonic vibration transducer axis direction one side forms the inclined wedge-shaped structure, form in two sides of inclined wedge-shaped, a cut parallel sided is not in the ultrasonic vibration transducer axis, and the another side be cut becomes 10 degree angles with the ultrasonic vibration transducer axis.
Friction-driven piece 10 is by the bonding front end that is arranged on elliptical vibration MODAL TRANSFORMATION OF A device 7, and friction-driven piece 10 contacts with the frictional layer 9 on rotating disk 8.Utilize the ring flange of ultrasonic vibration transducer that stator and precompression device are installed, stator is connected to the single stimulated rotation ultrasonic motor of formation in aggregates with rotor, the ultrasonic vibration transducer axis after ring flange is fixing and the angle on rotating disk 8 planes are 45 degree.
This list stimulated rotation ultrasonic motor stator natural frequency is 25.32KHz, impedance is 86 ohm, dynamic electric resistor is 17 ohm, Zhi Xu mono-road ultrasonic electric signal excitation, ultrasonic-frequency power supply 11 output voltage ranges are 0-400V, current range is 0-4A, and output frequency is 25.32 ± 0.01KHz, and ultrasonic-frequency power supply 11 has the automatic frequency tracking function in designated frequency range.
After the ultrasonic electric signal of ultrasonic-frequency power supply output is linked into the electrode slice 4 of ultrasonic vibration transducer, the ultrasonic vibration transducer namely produces ultrasonic vibration, after ultrasonic vibrational energy is delivered to elliptical vibration MODAL TRANSFORMATION OF A device 7 ends from the ultrasonic vibration transducer, be converted to extensional vibration and the compound vertical curved composite ultrasonic elliptical vibratory of flexural vibrations with certain phase difference, namely be converted to the vertical curved composite ultrasonic elliptical vibratory of elliptical vibration MODAL TRANSFORMATION OF A device 7 ends; And drive friction-driven piece 10 and elliptical vibration MODAL TRANSFORMATION OF A device 7 ends are done ultrasonic elliptical vibratory together, and then drive rotor and carry out the continuous rotation motion.The system after 10 minutes of moving reaches steady-working state, and the output voltage of ultrasonic-frequency power supply 11 is 240V, and electric current is 1.45A, and diameter is that the edge peripheral linear speed peak value of the rotating disk 8 of 40mm is 56.2mm/s.
Claims (6)
1. single stimulated rotation ultrasonic motor, comprise rotor and stator, it is characterized in that: rotor comprises rotating disk and is arranged on the frictional layer of disc surfaces; Stator comprises ultrasonic vibration transducer, elliptical vibration MODAL TRANSFORMATION OF A device and friction-driven piece; Described ultrasonic vibration transducer outline is cylindrical, it comprises bolt and is set in successively back shroud, piezoelectric ceramic piece, electrode slice and the front shroud on bolt, on front shroud, be provided with and can connect with other constructional device the ring flange of use, back shroud and front shroud connect back shroud, piezoelectric ceramic piece, electrode slice and front shroud to compress by bolt; Described elliptical vibration MODAL TRANSFORMATION OF A device is arranged on the front end of front shroud, for the inclined wedge-shaped structure, the former integral body of inclined wedge-shaped structure elliptical vibration MODAL TRANSFORMATION OF A device is cuboid, after being cut a part, ultrasonic vibration transducer axis direction one side forms the inclined wedge-shaped structure, form in two sides of inclined wedge-shaped, a cut parallel sided is not in the ultrasonic vibration transducer axis, and the another side be cut becomes 3-30 degree angle with the ultrasonic vibration transducer axis; Described friction-driven piece is arranged on the front end of elliptical vibration MODAL TRANSFORMATION OF A device; Ultrasonic vibration transducer axis after ring flange is fixing and the angle of plane of rotor disc are 20 degree ~ 160 degree.
2. single stimulated rotation ultrasonic motor according to claim 1, it is characterized in that: described elliptical vibration MODAL TRANSFORMATION OF A device and front shroud are made into the front end of a whole installation at front shroud.
3. single stimulated rotation ultrasonic motor according to claim 1, is characterized in that: also comprise that connects a double-screw bolt, for elliptical vibration MODAL TRANSFORMATION OF A device being connected in to the front end of front shroud.
4. according to claim 1 or 2 or 3 described single stimulated rotation ultrasonic motors, it is characterized in that: described friction-driven piece is arranged on the front end of elliptical vibration MODAL TRANSFORMATION OF A device by welding.
5. according to claim 1 or 2 or 3 described single stimulated rotation ultrasonic motors, it is characterized in that: described friction-driven piece is by the bonding front end that is arranged on elliptical vibration MODAL TRANSFORMATION OF A device.
6. according to claim 1 or 2 or 3 described single stimulated rotation ultrasonic motors, it is characterized in that: also comprise a joint bolt, for the friction-driven piece being connected in to the front end of elliptical vibration MODAL TRANSFORMATION OF A device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310373902.5A CN103414373B (en) | 2013-08-26 | 2013-08-26 | Single stimulated rotation ultrasonic motor |
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| CN201310373902.5A CN103414373B (en) | 2013-08-26 | 2013-08-26 | Single stimulated rotation ultrasonic motor |
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| CN103414373A true CN103414373A (en) | 2013-11-27 |
| CN103414373B CN103414373B (en) | 2015-09-02 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362892A (en) * | 2014-12-09 | 2015-02-18 | 苏州科技学院 | Single-driven ultrasonic-elliptical-vibration precise conveyer |
| CN104362887A (en) * | 2014-12-09 | 2015-02-18 | 苏州科技学院 | Multi-vibrator two-way material conveying device with single-excitation ultrasonic elliptic vibration |
| CN104377985A (en) * | 2014-12-09 | 2015-02-25 | 苏州科技学院 | Single electro-signal excited ultrasonic elliptical vibration precision conveyor |
| CN104377986A (en) * | 2014-12-09 | 2015-02-25 | 苏州科技学院 | Single-excitation ultrasonic elliptic-vibration multi-vibrator material conveying device |
| CN104410325A (en) * | 2014-12-09 | 2015-03-11 | 苏州科技学院 | Single-excitation rotating ultrasonic motor |
| CN104410322A (en) * | 2014-12-09 | 2015-03-11 | 苏州科技学院 | Single electric signal excited ultrasound elliptic-vibration multi-vibrator material conveying device |
| CN104410320A (en) * | 2014-12-09 | 2015-03-11 | 苏州科技学院 | Single-excitation ultrasonic ellipsoidal vibration precise conveyer |
| CN104467520A (en) * | 2014-12-09 | 2015-03-25 | 苏州科技学院 | Single-excitation ultrasonic elliptic vibration bidirectional precise conveying device |
| CN110601596A (en) * | 2019-05-09 | 2019-12-20 | 山东理工大学 | Standing wave type magnetic repulsion unidirectional rotating motor based on piezoelectric ceramic |
Citations (5)
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|---|---|---|---|---|
| EP0313130A2 (en) * | 1987-10-21 | 1989-04-26 | Philips Patentverwaltung GmbH | Rotary or linear electric motor in which the rotor in driven by ultrasonic vibrations |
| CN101804575A (en) * | 2010-03-05 | 2010-08-18 | 清华大学 | Elliptical ultrasonic vibration auxiliary cutting device with adjustable track |
| CN102120302A (en) * | 2010-12-30 | 2011-07-13 | 河南理工大学 | Single-excitation elliptical ultrasonic vibration finishing device |
| CN103208943A (en) * | 2013-05-08 | 2013-07-17 | 苏州科技学院 | Single-excitation rotary ultrasonic motor |
| CN203406800U (en) * | 2013-08-26 | 2014-01-22 | 苏州科技学院 | Single excitation rotary ultrasonic motor |
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2013
- 2013-08-26 CN CN201310373902.5A patent/CN103414373B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0313130A2 (en) * | 1987-10-21 | 1989-04-26 | Philips Patentverwaltung GmbH | Rotary or linear electric motor in which the rotor in driven by ultrasonic vibrations |
| EP0313130A3 (en) * | 1987-10-21 | 1990-04-25 | Philips Patentverwaltung Gmbh | Rotary or linear electric motor in which the rotor in driven by ultrasonic vibrations |
| CN101804575A (en) * | 2010-03-05 | 2010-08-18 | 清华大学 | Elliptical ultrasonic vibration auxiliary cutting device with adjustable track |
| CN102120302A (en) * | 2010-12-30 | 2011-07-13 | 河南理工大学 | Single-excitation elliptical ultrasonic vibration finishing device |
| CN103208943A (en) * | 2013-05-08 | 2013-07-17 | 苏州科技学院 | Single-excitation rotary ultrasonic motor |
| CN203406800U (en) * | 2013-08-26 | 2014-01-22 | 苏州科技学院 | Single excitation rotary ultrasonic motor |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362892A (en) * | 2014-12-09 | 2015-02-18 | 苏州科技学院 | Single-driven ultrasonic-elliptical-vibration precise conveyer |
| CN104362887A (en) * | 2014-12-09 | 2015-02-18 | 苏州科技学院 | Multi-vibrator two-way material conveying device with single-excitation ultrasonic elliptic vibration |
| CN104377985A (en) * | 2014-12-09 | 2015-02-25 | 苏州科技学院 | Single electro-signal excited ultrasonic elliptical vibration precision conveyor |
| CN104377986A (en) * | 2014-12-09 | 2015-02-25 | 苏州科技学院 | Single-excitation ultrasonic elliptic-vibration multi-vibrator material conveying device |
| CN104410325A (en) * | 2014-12-09 | 2015-03-11 | 苏州科技学院 | Single-excitation rotating ultrasonic motor |
| CN104410322A (en) * | 2014-12-09 | 2015-03-11 | 苏州科技学院 | Single electric signal excited ultrasound elliptic-vibration multi-vibrator material conveying device |
| CN104410320A (en) * | 2014-12-09 | 2015-03-11 | 苏州科技学院 | Single-excitation ultrasonic ellipsoidal vibration precise conveyer |
| CN104467520A (en) * | 2014-12-09 | 2015-03-25 | 苏州科技学院 | Single-excitation ultrasonic elliptic vibration bidirectional precise conveying device |
| CN110601596A (en) * | 2019-05-09 | 2019-12-20 | 山东理工大学 | Standing wave type magnetic repulsion unidirectional rotating motor based on piezoelectric ceramic |
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| CN103414373B (en) | 2015-09-02 |
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