CN103414375A - Single-electric-signal driving rotating ultrasonic motor - Google Patents
Single-electric-signal driving rotating ultrasonic motor Download PDFInfo
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- CN103414375A CN103414375A CN2013103739010A CN201310373901A CN103414375A CN 103414375 A CN103414375 A CN 103414375A CN 2013103739010 A CN2013103739010 A CN 2013103739010A CN 201310373901 A CN201310373901 A CN 201310373901A CN 103414375 A CN103414375 A CN 103414375A
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Abstract
The invention discloses a single-electric-signal driving rotating ultrasonic motor. The single-electric-signal driving rotating ultrasonic motor comprises mandrels, rear cover plates, piezoelectric ceramic pieces, electrode plates, elliptical vibration mode converters, a friction plate, a bearing, a spring and a nut, wherein a stator of the ultrasonic motor is composed of each mandrel, each rear cover plate, each piezoelectric ceramic piece, each electrode plate and each elliptical vibration mode converter, a rotor of the ultrasonic motor is composed of the friction plate and the bearing, a positive-pressure prestressing force adjusting mechanism of the stators and the rotor is composed of the spring and the nut. Through the structure of the elliptic vibration mode converter with the special design, the elliptic track motion of mass points on a driving tooth end face of each stator is achieved through longitudinal vibration of the piezoelectric ceramic pieces, and the rotor is driven to rotate. The single-electric-signal driving rotating ultrasonic motor has the advantages of being simple in structure, easy to manufacture, prone to microminiaturization and integration, low in cost, low in control difficulty and wide in application prospect.
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-electrical signal and drive rotary 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.The problems such as in existing rotary-type ultrasound electric machine, the ubiquity driving moment is little at present, and axially volume wearing and tearing difference in internal-and external diameter contact zone large, rotor is large, functional reliability is low.
Single-electrical signal driven-mode conversion hysteria ultrasound electric machine is also a kind of of ultrasound electric machine, and it is the driving that utilizes one group of piezo ceramic element, and the MODAL TRANSFORMATION OF A device by special construction makes stator produce the complex vibration with two kinds of mode of oscillation components.If between these two mode of oscillations, exist certain phase difference and frequency close, on stator and rotor contact interface, the end face particle of stator will produce the elliptical orbit vibration, thereby by the friction between stator and rotor, obtains motion and the moment of torsion of rotor.
At publication number, be CN101860259A, denomination of invention is in the patent documentation of " single-electrical signal-stimulated rotation ultrasonic motor ", disclosing a kind of utilization utilizes window shape dislocation MODAL TRANSFORMATION OF A device that sandwich oscillator generation extensional vibration is converted to driving gear particle elliptical vibration, and then the ultrasound electric machine of driving rotor rotation, this invention control-driven system is simple, assembling easily, but its window shape dislocation MODAL TRANSFORMATION OF A device manufacture difficulty is larger, production cost is higher, has restricted its promotion and application in industrial production.
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 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; There is complex structure in this type of rotary ultrasonic motor, manufacture to install more difficultly, and cost is higher, the problems such as poor stability of motor torque and speed.
Summary of the invention
For overcoming the deficiencies in the prior art, the object of the present invention is to provide a kind of novel single-electrical signal to drive rotary ultrasonic motor.
Single-electrical signal drives rotary ultrasonic motor, it is characterized in that: comprise axle and be set in successively back shroud, piezoelectric ceramic piece, electrode slice, elliptical vibration MODAL TRANSFORMATION OF A device, frictional disk, bearing, spring and the nut on axle; Described axle, back shroud, piezoelectric ceramic piece, electrode slice, elliptical vibration MODAL TRANSFORMATION OF A device form the stationary part of described ultrasound electric machine, axle and elliptical vibration MODAL TRANSFORMATION OF A device are fixed back shroud, piezoelectric ceramic piece, electrode slice and elliptical vibration MODAL TRANSFORMATION OF A device after by thread connection, formed the power conversion part of ultrasound electric machine, the ultrasonic electric energy of ultrasonic-frequency power supply output has been converted to the ultrasonic vibrational energy of stationary part.
Described elliptical vibration MODAL TRANSFORMATION OF A device is integrated, comprise the barrel portion of lower end and the driving gear part of upper end, described driving gear part is in the uniform upper end that is arranged on barrel portion of circumferencial direction, each driving gear is radially the inclined wedge-shaped structure, the former overall structure of this inclined wedge-shaped radially be projected as rectangle, after being cut a part, ultrasound electric machine axis direction one side forms the inclined wedge-shaped structure, namely form in two sides of inclined wedge-shaped, cut side projection radially is not parallel to the ultrasound electric machine axis, the another side be cut projection radially becomes 3-40 degree angle with the ultrasound electric machine axis, described driving gear quantity is 3-12.
The purpose that makes driving gear form the inclined wedge-shaped structure is in order to change the mode of oscillation of elliptical vibration MODAL TRANSFORMATION OF A device, its extensional vibration model frequency and flexural vibration mode frequency are approached or equate, existence due to the inclined wedge-shaped structure, the longitudinal ultrasonic vibration that the power conversion of ultrasound electric machine partly produces is after being delivered to inclined wedge-shaped driving gear end, at inclined wedge-shaped structure driving gear end, be 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 vibration track at the end of inclined wedge-shaped structure driving gear, namely be converted to elliptical vibration MODAL TRANSFORMATION OF A device driving gear end along the tangential vertical curved composite ultrasonic elliptical vibratory of ultrasound electric machine circumference.
Described frictional disk and bearing form the rotor portion of ultrasound electric machine; Described spring and nut form the malleation prefastening force adjustment mechanism of ultrasound electric machine rotor portion and stationary part.
Further, described elliptical vibration MODAL TRANSFORMATION OF A device driving gear end is bonded with the A friction material.
Further, on described frictional disk, be bonded with the B friction material with the contacted end face of driving gear.
Further, described back shroud and described axle can manufacture split-type structural or integral structure.
Stator of the present invention adopts the sandwich transducer structure, elliptical vibration mode converter by particular design, utilize the longitudinal vibration mode of one group of piezoelectric ceramic to realize that the elliptical orbit of stator driving gear end face particle moves, drive rotor, have simple in structure, the advantages such as power capacity is large, easy to manufacture, and assembly difficulty is low; The present invention only needs one group of control circuit and driving power thereof in addition, and control-driven system is simple, easy to manufacture, controls difficulty little, and reliability is high; Simultaneously the present invention have volume little, lightweight, be easy to microminiaturization, integrated, cost is low, 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, have a extensive future.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is parts three-dimensional exploded schematic diagram of the present invention.
Fig. 3 is elliptical vibration MODAL TRANSFORMATION OF A device three-dimensional structure schematic diagram of the present invention.
Fig. 4 is application example schematic diagram of the present invention.
Number in the figure explanation: 1. axle, 2. back shroud, 3. piezoelectric ceramic piece, 4. electrode slice, 5. elliptical vibration MODAL TRANSFORMATION OF A device, 6.A friction material, 7. B friction material, 8. frictional disk, 9. bearing, 10. spring, 11. nuts, 12. ultrasonic-frequency power supplies
Embodiment
Shown in Fig. 1,2,3,4, single-electrical signal of the present invention drives rotary ultrasonic motor, comprises axle 1 and is set in successively back shroud 2, piezoelectric ceramic piece 3, electrode slice 4, elliptical vibration MODAL TRANSFORMATION OF A device 5, frictional disk 8, bearing 9, spring 10 and the nut 11 on axle 1; Described axle 1, back shroud 2, piezoelectric ceramic piece 3, electrode slice 4, elliptical vibration MODAL TRANSFORMATION OF A device 5 form the stationary part of described ultrasound electric machine, internal thread by the external screw thread on axle 1 and elliptical vibration MODAL TRANSFORMATION OF A device 5 connects, back shroud 2, piezoelectric ceramic piece 3, electrode slice 4 and elliptical vibration MODAL TRANSFORMATION OF A device 5 are fixed, formed the power conversion part of ultrasound electric machine, the ultrasonic electric energy of ultrasonic-frequency power supply 12 outputs can be converted to the ultrasonic vibrational energy of ultrasound electric machine, described back shroud 2 and described axle 1 manufacture split-type structural.
Elliptical vibration MODAL TRANSFORMATION OF A device 5 is integrated, comprise the barrel portion of lower end and the driving gear part of upper end, the driving gear part is in the uniform upper end that is arranged on barrel portion of circumferencial direction, each driving gear is radially the inclined wedge-shaped structure, the former overall structure of this inclined wedge-shaped radially be projected as rectangle, after being cut a part, ultrasound electric machine axis direction one side forms the inclined wedge-shaped structure, namely form in two sides of inclined wedge-shaped, cut side projection radially is not parallel to the ultrasound electric machine axis, the another side be cut projection radially becomes 24 degree angles with the ultrasound electric machine axis, driving gear small end width is 1.5mm, be highly 7.5mm, described driving gear quantity is 6, the driving gear end is bonded with A friction material 6.
Single-electrical signal drives rotary ultrasonic motor external diameter 10mm, length 55mm, and piezoelectric ceramic used is PZT-8, is of a size of
Ф 10 * Ф 5 * 2mm, natural frequency is 99.6KHz, impedance is 76 ohm, dynamic electric resistor is 21 ohm, and ultrasonic-frequency power supply 12 output voltage ranges are 0-400V, and current range is 0-4A, output frequency is 99.6 ± 0.01KHz, and ultrasonic-frequency power supply 12 has the automatic frequency tracking function in designated frequency range.
In conjunction with shown in Figure 4, during operation, after the signal of telecommunication of electrode slice 4 access ultrasonic-frequency power supplies 12 outputs of single-electrical signal driving rotary ultrasonic motor, inverse piezoelectric effect due to piezoelectric ceramic piece 3, piezoelectric ceramic piece 3 will produce the longitudinal ultrasonic vibration, the electric energy that is about to ultrasonic-frequency power supply 12 outputs is converted to ultrasonic vibrational energy, and drive whole stator and carry out the longitudinal ultrasonic vibration, when ultrasonic vibrational energy, be delivered to elliptical vibration MODAL TRANSFORMATION OF A device 5 driving gear ends from stator after, 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 elliptical vibration MODAL TRANSFORMATION OF A device 5 driving gear ends along the tangential vertical curved composite ultrasonic elliptical vibratory of ultrasound electric machine circumference, driving gear end and frictional disk 8 contact, and then the driving rotor is rotated motion, after ultrasound electric machine moves 30 minutes continuously, ultrasonic-frequency power supply 12 output voltages are 100V, electric current is 0.26A, rotary speed of rotator is 486r/min, running status is good.
Claims (5)
1. single-electrical signal drives rotary ultrasonic motor, it is characterized in that: comprise axle and be set in successively back shroud, piezoelectric ceramic piece, electrode slice, elliptical vibration MODAL TRANSFORMATION OF A device, frictional disk, bearing, spring and the nut on axle, described axle, back shroud, piezoelectric ceramic piece, electrode slice, elliptical vibration MODAL TRANSFORMATION OF A device form the stationary part of described ultrasound electric machine, and axle and elliptical vibration MODAL TRANSFORMATION OF A device are fixed back shroud, piezoelectric ceramic piece, electrode slice and elliptical vibration MODAL TRANSFORMATION OF A device after by thread connection, described frictional disk and bearing form the rotor portion of ultrasound electric machine, described spring and nut form the malleation prefastening force adjustment mechanism of ultrasound electric machine rotor portion and stationary part, described elliptical vibration MODAL TRANSFORMATION OF A device is integrated, comprise the barrel portion of lower end and the driving gear part of upper end, described driving gear part is in the uniform upper end that is arranged on barrel portion of circumferencial direction, each driving gear is radially the inclined wedge-shaped structure, the former overall structure of this inclined wedge-shaped radially be projected as rectangle, after being cut a part, ultrasound electric machine axis direction one side forms the inclined wedge-shaped structure, namely form in two sides of inclined wedge-shaped, cut side projection radially is not parallel to the ultrasound electric machine axis, the another side be cut projection radially becomes 3-40 degree angle with the ultrasound electric machine axis.
2. single-electrical signal according to claim 1 drives rotary ultrasonic motor, it is characterized in that: on described elliptical vibration MODAL TRANSFORMATION OF A device, the quantity of driving gear is 3-12.
3. single-electrical signal according to claim 1 drives rotary ultrasonic motor, and it is characterized in that: described back shroud and described axle are made into split-type structural or integral structure.
4. according to claim 1 or 2 or 3 described single-electrical signals, drive rotary ultrasonic motor, it is characterized in that: described elliptical vibration MODAL TRANSFORMATION OF A device driving gear end is bonded with the A friction material.
5. according to claim 1 or 2 or 3 described single-electrical signals, drive rotary ultrasonic motor, it is characterized in that: with the contacted end face of driving gear, be bonded with the B friction material on described frictional disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310373901.0A CN103414375B (en) | 2013-08-26 | 2013-08-26 | Single-electrical signal drives rotary ultrasonic motor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310373901.0A CN103414375B (en) | 2013-08-26 | 2013-08-26 | Single-electrical signal drives rotary ultrasonic motor |
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| CN103414375A true CN103414375A (en) | 2013-11-27 |
| CN103414375B CN103414375B (en) | 2016-01-20 |
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| CN201310373901.0A Expired - Fee Related CN103414375B (en) | 2013-08-26 | 2013-08-26 | Single-electrical signal drives rotary ultrasonic motor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362897A (en) * | 2014-12-09 | 2015-02-18 | 苏州科技学院 | Single-electric-signal-driven rotary ultrasonic motor |
| CN109861583A (en) * | 2019-04-15 | 2019-06-07 | 太原科技大学 | A kind of superimposed type longitudinal vibration mode rotary piezo-electric motor |
| CN115360933A (en) * | 2022-08-19 | 2022-11-18 | 合肥工业大学 | Single-mode miniature ultrasonic motor based on asymmetric structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09182469A (en) * | 1995-12-25 | 1997-07-11 | Asmo Co Ltd | Ultrasonic motor, and method of driving ultrasonic motor |
| JPH10285964A (en) * | 1997-04-07 | 1998-10-23 | Asmo Co Ltd | Ultrasonic motor and rotor used for the motor |
| US6300705B1 (en) * | 1998-07-29 | 2001-10-09 | Asmo Co., Ltd. | Ultrasonic motor driven by elliptic vibration |
| CN103208944A (en) * | 2013-05-08 | 2013-07-17 | 苏州科技学院 | Single electric signal driving rotation ultrasonic motor |
| CN203406801U (en) * | 2013-08-26 | 2014-01-22 | 苏州科技学院 | Single electric signal driving rotary ultrasonic motor |
-
2013
- 2013-08-26 CN CN201310373901.0A patent/CN103414375B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09182469A (en) * | 1995-12-25 | 1997-07-11 | Asmo Co Ltd | Ultrasonic motor, and method of driving ultrasonic motor |
| JPH10285964A (en) * | 1997-04-07 | 1998-10-23 | Asmo Co Ltd | Ultrasonic motor and rotor used for the motor |
| US6300705B1 (en) * | 1998-07-29 | 2001-10-09 | Asmo Co., Ltd. | Ultrasonic motor driven by elliptic vibration |
| CN103208944A (en) * | 2013-05-08 | 2013-07-17 | 苏州科技学院 | Single electric signal driving rotation ultrasonic motor |
| CN203406801U (en) * | 2013-08-26 | 2014-01-22 | 苏州科技学院 | Single electric signal driving rotary ultrasonic motor |
Non-Patent Citations (1)
| Title |
|---|
| 殷振 等.: "超声内圆磨削***新型振子的仿真和实验研究", 《机械设计与制造》, no. 8, 8 August 2010 (2010-08-08) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104362897A (en) * | 2014-12-09 | 2015-02-18 | 苏州科技学院 | Single-electric-signal-driven rotary ultrasonic motor |
| CN109861583A (en) * | 2019-04-15 | 2019-06-07 | 太原科技大学 | A kind of superimposed type longitudinal vibration mode rotary piezo-electric motor |
| CN115360933A (en) * | 2022-08-19 | 2022-11-18 | 合肥工业大学 | Single-mode miniature ultrasonic motor based on asymmetric structure |
| CN115360933B (en) * | 2022-08-19 | 2024-03-08 | 合肥工业大学 | Single-mode miniature ultrasonic motor based on asymmetric structure |
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| CN103414375B (en) | 2016-01-20 |
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