CN104410320A - Single-excitation ultrasonic ellipsoidal vibration precise conveyer - Google Patents
Single-excitation ultrasonic ellipsoidal vibration precise conveyer Download PDFInfo
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- CN104410320A CN104410320A CN201410740348.4A CN201410740348A CN104410320A CN 104410320 A CN104410320 A CN 104410320A CN 201410740348 A CN201410740348 A CN 201410740348A CN 104410320 A CN104410320 A CN 104410320A
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Abstract
The invention discloses a single-excitation ultrasonic ellipsoidal vibration precise conveyer. A rotor comprises a conveyor belt, a belt wheel and a friction layer arranged on the side surface of the belt wheel. A stator comprises an ultrasonic vibration transducer, an ellipsoidal vibration mode converter and a friction driving block arranged at the front end of the ellipsoidal vibration mode converter. The ultrasonic vibration transducer comprises a bolt, and a rear cover plate, a piezoelectric ceramic piece, an electrode plate and a front cover plate, which are sequentially arranged on the bolt in a sleeving way, and the rear cover plate, the piezoelectric ceramic piece, the electrode plate and the front cover plate are connected and tightly pressed by the rear cover plate and the front cover plate through the bolt. The ellipsoidal vibration mode converter is arranged at the front end of the ultrasonic vibration transducer and has a wedge-shaped structure. Longitudinal ultrasonic vibration produced by the ultrasonic vibration transducer can be converted to the longitudinal/flexural composite ultrasonic ellipsoidal vibration of the bottom end of the ellipsoidal vibration mode converter and the friction driving block by the ellipsoidal vibration mode converter, the belt wheel is driven to make continuous rotating motion, the conveyor belt is accordingly driven to move, and the precise conveying of powder or bulk materials is realized.
Description
Technical field
The present invention relates to the accurate transportation art of the vibration utilizing piezoelectric ceramic inverse piezoelectric effect, especially relate to a kind of list excitation ultrasonic elliptical vibratory that utilizes and carry out the precision conveying device driven.
Background technology
The field such as automated production processing and assembling such as to prepare at medicine, chemical industry, food, machinery, material, the transmission of material and parts and assembling, adopt traditional low-frequency high-amplitude electric and magnetic oscillation transmitting device always, during this device work, noise is more, dispensing precision is low, be not easy to realize precise closed-loop control, power volume is little, and these problems govern the raising of accurate transmission system overall performance always.
The excess sound pressure electric drive having developed rapidly and applied since the eighties in 20 century is that accurate transmission system provides opportunity, it is by the rubbing action between stator and mover, elastomeric micro breadth oscillation is converted to macroscopical straight line (rotation) motion of mover, directly promote load.Because it has that volume is little, lightweight, low-speed big, noise are little, response is fast, positioning precision is high, without electromagnetic interference and the advantage such as environmental suitability is strong, obtains increasingly extensive application in technical fields such as medical treatment, Aero-Space, robot, MEMS.
But existing traveling-wave ultrasonic conveying device also exist row wave attenuation compared with large, long distance delivery be restricted be difficult to realize, material in delivered length maldistribution, complex structure, power output is little, manufactures is difficult, to the deficiency such as manufacture that matching requirements are higher, cost is higher and the life-span is short.These problems constrain their application in the industrial production.
Summary of the invention
The invention provides a kind of novel list excitation ultrasonic elliptical vibratory precision conveying device, object is to overcome the deficiency existed in the conveying of above-mentioned material precision, simplify vibration precision conveying device structure, reduce manufacture difficulty, reduce cost, improve useful life and improve system works stability.
Single excitation ultrasonic elliptical vibratory precision conveying device, comprise stator and mover, described mover comprises the frictional layer that mover comprises transport tape, belt wheel and is arranged on band wheel side; Described stator comprises single-excitation ultrasonic oval vibration energy converter, elliptical vibration modal transducer and friction-driven block; Described single-excitation ultrasonic oval vibration energy converter outline is cylindrical, it comprises bolt and is set in back shroud, piezoelectric ceramic piece, electrode slice and the front shroud on bolt successively, front shroud is provided with the ring flange that can connect with other constructional device, back shroud, piezoelectric ceramic piece, electrode slice and front shroud are connected compression by bolt by back shroud and front shroud, constitute the energy conversion part of single excitation ultrasonic elliptical vibratory precision conveying device, the ultrasonic electric energy that ultrasonic-frequency power supply exports is converted to the ultrasonic vibrational energy of ultrasonic transducer.
Described elliptical vibration modal transducer and front shroud are made into the front end that is integrally provided in front shroud, or the welding of elliptical vibration modal transducer is arranged on the front end of front shroud.Described elliptical vibration modal transducer is inclined wedge-shaped structure, the former entirety of inclined wedge-shaped structure elliptical vibration modal transducer is cuboid, inclined wedge-shaped structure is formed be cut a part along its side of single-excitation ultrasonic oval vibration energy converter axis direction after, formed in two sides of inclined wedge-shaped, not cut side is parallel to single-excitation ultrasonic oval vibration energy converter axis, and the another side be cut becomes 3-30 degree angle with single-excitation ultrasonic oval vibration energy converter axis.Transition arc is provided with in the connection place of elliptical vibration modal transducer and ultrasonic transducer front shroud.
The sub-assembly that elliptical vibration modal transducer is formed after being arranged on single-excitation ultrasonic oval vibration energy converter front end is called single excitation ultrasonic elliptical vibratory transducer, the object making elliptical vibration modal transducer become inclined wedge-shaped structure is the mode of oscillation in order to change single excitation ultrasonic elliptical vibratory transducer, make its longitudinal vibration mode frequency and flexural vibration mode frequency close to or equal; Due to the existence of inclined wedge-shaped structure elliptical vibration modal transducer, the longitudinal ultrasonic vibration that single-excitation ultrasonic oval vibration energy converter produces is after being delivered to inclined wedge-shaped structure elliptical vibration modal transducer, be a part of extensional vibration component and a part of flexural vibrations component at the end parse of inclined wedge-shaped structure elliptical vibration modal transducer, and two oscillating components have certain phase difference, and then be compounded to form elliptic vibrations at the end of inclined wedge-shaped structure elliptical vibration modal transducer.
Described friction-driven block is arranged on the front end of elliptical vibration modal transducer by welding, bonding or screw attachment mode, and friction-driven block is tangent with the frictional layer being with wheel side to arrange and contact; The ring flange of single-excitation ultrasonic oval vibration energy converter is used for installing stator and precompression device, stator is connected formation in aggregates single excitation ultrasonic elliptical vibratory precision conveying device with mover, the single-excitation ultrasonic oval vibration energy converter axis after ring flange is fixed with support becomes the angle of 20 degree ~ 160 degree with belt wheel plane.
After the ultrasonic electric signal of ultrasonic-frequency power supply output is linked into the electrode slice of single-excitation ultrasonic oval vibration energy converter, namely single-excitation ultrasonic oval vibration energy converter produces ultrasonic vibration, after ultrasonic vibrational energy is delivered to elliptical vibration modal transducer end from single-excitation ultrasonic oval vibration energy converter, be converted to the vertical curved composite ultrasonic elliptical vibratory of extensional vibration and the flexural vibrations compound with certain phase difference, namely the vertical curved composite ultrasonic elliptical vibratory of elliptical vibration modal transducer end is converted to, and drive friction-driven block to do ultrasonic elliptical vibratory together with elliptical vibration modal transducer end, friction-driven block and rotating disk contact rear drive dial rotation, and then drive belt and carry out precise motion with material.Compare the precision conveying device that existing document is introduced, this list excitation ultrasonic elliptical vibratory precision conveying device has that power capacity is large, energy conversion efficiency is high, structure is simple, easy to manufacture, cost is low, the rigidity of structure is large, control-driven system is simple and vibration performance such as to stablize at the advantage.
Further, described list excitation ultrasonic elliptical vibratory precision conveying device only has one group of extensional vibration piezoelectric ceramic piece.
Further, described list excitation ultrasonic elliptical vibratory precision conveying device Zhi Xu mono-road ultrasonic electric signal excitation.
Present invention employs the vertical curved composite ultrasonic elliptical vibratory that mechanical oscillation MODAL TRANSFORMATION OF A mechanism is converted to the extensional vibration of single-excitation ultrasonic oval vibration energy converter elliptical vibration modal transducer end and vibration head, simplify the overall structure of single excitation ultrasonic elliptical vibratory precision conveying device, greatly reduce the complexity of vibrational system, reduce manufacture, assembly difficulty and production cost, whole single excitation ultrasonic elliptical vibratory precision conveying device structure is simple, 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, control difficulty is low, avoid the complicated ultrasonic-frequency power supply development cost that two-phase or multiphase ultrasonic vibration is compounded to form elliptical vibration transducer, simplify control circuit and ultrasonic-frequency power supply structure, reduce control circuit and ultrasonic-frequency power supply cost, reduce control circuit and ultrasonic-frequency power supply volume, be easy to the microminiaturization realizing control circuit and ultrasonic-frequency power supply, integrated, improve reliability, service behaviour is more stable, has a extensive future.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the front view of single excitation ultrasonic elliptical vibratory transducer in the present invention.
Fig. 3 is the left view of single excitation ultrasonic elliptical vibratory transducer in the present invention.
Fig. 4 is application example schematic diagram of the present invention.
Number in the figure illustrates: 1. bolt, 2. back shroud, 3. piezoelectric ceramic piece, 4. electrode slice, 5. front shroud, 6. ring flange, 7. elliptical vibration modal transducer, 8. transport tape, 9. frictional layer, 10. friction-driven block, 11. belt wheels, 12. ultrasonic-frequency power supplies.
Embodiment
Shown in composition graphs 1,2, single excitation ultrasonic elliptical vibratory precision conveying device, comprise stator and mover, mover comprises transport tape 8, belt wheel 11 and is arranged on the frictional layer 9 on belt wheel 11 surface; Stator comprises single-excitation ultrasonic oval vibration energy converter, elliptical vibration modal transducer 7 and friction-driven block 10; Single-excitation ultrasonic oval vibration energy converter outline is cylindrical, it comprises bolt 1 and is set in back shroud 2, piezoelectric ceramic piece 3, electrode slice 4 and the front shroud 5 on bolt 1 successively, front shroud 5 is provided with the ring flange 6 that can connect with other constructional device, back shroud 2, piezoelectric ceramic piece 3, electrode slice 4 and front shroud 5 are connected compression by bolt 1 by back shroud 2 and front shroud 5, constitute the energy conversion part of single excitation ultrasonic elliptical vibratory precision conveying device, the ultrasonic electric energy exported by ultrasonic-frequency power supply 12 is converted to the ultrasonic vibrational energy of single-excitation ultrasonic oval vibration energy converter.This list excitation ultrasonic elliptical vibratory precision conveying device 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 transducer 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 transducer 7 entirety is inclined wedge-shaped structure, and the former entirety of inclined wedge-shaped structure elliptical vibration modal transducer 7 is cuboid, and the cross section length of side is 15
×15mm, long 40mm, inclined wedge-shaped structure is formed be cut a part along its side of single-excitation ultrasonic oval vibration energy converter axis direction after, formed in two sides of inclined wedge-shaped, not cut side is parallel to single-excitation ultrasonic oval vibration energy converter axis, and the another side be cut becomes 10 degree of angles with single-excitation ultrasonic oval vibration energy converter axis.Be provided with transition arc at elliptical vibration modal transducer 7 and the connection place of ultrasonic transducer front shroud 5, arc radius is 5mm.
Friction-driven block 10 is by the bonding front end being arranged on elliptical vibration modal transducer 7, tangent with the frictional layer 9 that arranges of belt wheel 11 surface and contact; The ring flange 6 of single-excitation ultrasonic oval vibration energy converter is utilized to carry out installation stator and precompression device, stator is connected formation in aggregates single excitation ultrasonic elliptical vibratory precision conveying device with mover, the single-excitation ultrasonic oval vibration energy converter axis after ring flange 6 is fixed with support becomes the angle of 45 degree with belt wheel 11 plane.
Single excitation ultrasonic elliptical vibratory precision conveying device stator natural frequency is 19.84KHz, impedance is 76 ohm, dynamic electric resistor is 16 ohm, the ultrasonic electric signal excitation of Zhi Xu mono-road, ultrasonic-frequency power supply 12 output voltage range is 0-400V, current range is 0-4A, and output frequency is 19.84 ± 0.01KHz, and ultrasonic-frequency power supply 12 has automatic frequency tracking function in designated frequency range.
After the ultrasonic electric signal of ultrasonic-frequency power supply 12 output is linked into the electrode slice 4 of single-excitation ultrasonic oval vibration energy converter, namely single-excitation ultrasonic oval vibration energy converter produces ultrasonic vibration, after ultrasonic vibrational energy is delivered to elliptical vibration modal transducer 7 end from single-excitation ultrasonic oval vibration energy converter, be converted to the vertical curved composite ultrasonic elliptical vibratory of extensional vibration and the flexural vibrations compound with certain phase difference, be namely converted to the vertical curved composite ultrasonic elliptical vibratory of elliptical vibration modal transducer 7 end; And drive friction-driven block 10 to do ultrasonic elliptical vibratory together with elliptical vibration modal transducer 7 end.After friction-driven block 10 contacts with the frictional layer 9 being arranged on belt wheel 11 surface, driving pulley 11 carries out continuous rotation motion, and drives belt movement, and then drives the material movement of required conveying.System cloud gray model after 10 minutes system reach stable vibration state, the output voltage of ultrasonic-frequency power supply 12 is 220V, and electric current is 1.35A, and belt wheel 11 diameter is 40mm, and belt movement velocity peak values is 56.3mm/s.
Claims (6)
1. single excitation ultrasonic elliptical vibratory precision conveying device, comprises mover and stator, it is characterized in that: mover comprises transport tape, belt wheel and is arranged on the frictional layer of band wheel side; Stator comprises single-excitation ultrasonic oval vibration energy converter, elliptical vibration modal transducer and friction-driven block; Described single-excitation ultrasonic oval vibration energy converter outline is cylindrical, it comprises bolt and is set in back shroud, piezoelectric ceramic piece, electrode slice and the front shroud on bolt successively, front shroud is provided with the ring flange that can connect with other constructional device, back shroud, piezoelectric ceramic piece, electrode slice and front shroud are connected compression by bolt by back shroud and front shroud; Described elliptical vibration modal transducer is arranged on the front end of front shroud, described elliptical vibration modal transducer is inclined wedge-shaped structure, the former entirety of inclined wedge-shaped structure elliptical vibration modal transducer is cuboid, inclined wedge-shaped structure is formed be cut a part along its side of single-excitation ultrasonic oval vibration energy converter axis direction after, formed in two sides of inclined wedge-shaped, not cut side is parallel to single-excitation ultrasonic oval vibration energy converter axis, and the another side be cut becomes 3-30 degree angle with single-excitation ultrasonic oval vibration energy converter axis; Transition arc is provided with in the connection place of elliptical vibration modal transducer and ultrasonic transducer front shroud; Described friction-driven block is arranged on the front end of elliptical vibration modal transducer, friction-driven block and the frictional layer that arranges of band wheel side tangent and contact; Single-excitation ultrasonic oval vibration energy converter axis after ring flange is fixed with support becomes the angle of 20 degree ~ 160 degree with belt wheel plane.
2. single excitation ultrasonic elliptical vibratory precision conveying device according to claim 1, is characterized in that: described elliptical vibration modal transducer and front shroud are made into the front end that is integrally provided in front shroud.
3. single excitation ultrasonic elliptical vibratory precision conveying device according to claim 1, is characterized in that: described elliptical vibration modal transducer welding is arranged on the front end of front shroud.
4. the list excitation ultrasonic elliptical vibratory precision conveying device according to claim 1 or 2 or 3, is characterized in that: described friction-driven block is arranged on the front end of elliptical vibration modal transducer by welding.
5. the list excitation ultrasonic elliptical vibratory precision conveying device according to claim 1 or 2 or 3, is characterized in that: described friction-driven block is by the bonding front end being arranged on elliptical vibration modal transducer.
6. the list excitation ultrasonic elliptical vibratory precision conveying device according to claim 1 or 2 or 3, is characterized in that: also comprise a joint bolt, for friction-driven block being connected in the front end of elliptical vibration modal transducer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410740348.4A CN104410320A (en) | 2014-12-09 | 2014-12-09 | Single-excitation ultrasonic ellipsoidal vibration precise conveyer |
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| CN201410740348.4A CN104410320A (en) | 2014-12-09 | 2014-12-09 | Single-excitation ultrasonic ellipsoidal vibration precise conveyer |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3735623A1 (en) * | 1987-10-21 | 1989-05-03 | Philips Patentverwaltung | ELECTRIC ROTATIONAL OR LINEAR MOTOR WHOSE RUNNER IS DRIVEN BY MEANS OF ULTRASONIC VIBRATIONS |
| JP2010051945A (en) * | 2008-08-29 | 2010-03-11 | Mitsubishi Heavy Ind Ltd | Resonance frequency-adjustable apparatus for collecting piezoelectric vibration energy |
| KR101107763B1 (en) * | 2009-01-21 | 2012-01-20 | 임대순 | Piezo electric motor |
| WO2012105734A1 (en) * | 2011-01-31 | 2012-08-09 | Yun Man-Sun | Piezo actuator having an electrode structure for a torsional vibration mode, and rotation-type ultrasonic motor including same |
| CN103414373A (en) * | 2013-08-26 | 2013-11-27 | 苏州科技学院 | Single-incentive rotating ultrasonic motor |
| CN204271941U (en) * | 2014-12-09 | 2015-04-15 | 苏州科技学院 | Single excitation ultrasonic elliptical vibratory precision conveying device |
-
2014
- 2014-12-09 CN CN201410740348.4A patent/CN104410320A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3735623A1 (en) * | 1987-10-21 | 1989-05-03 | Philips Patentverwaltung | ELECTRIC ROTATIONAL OR LINEAR MOTOR WHOSE RUNNER IS DRIVEN BY MEANS OF ULTRASONIC VIBRATIONS |
| JP2010051945A (en) * | 2008-08-29 | 2010-03-11 | Mitsubishi Heavy Ind Ltd | Resonance frequency-adjustable apparatus for collecting piezoelectric vibration energy |
| KR101107763B1 (en) * | 2009-01-21 | 2012-01-20 | 임대순 | Piezo electric motor |
| WO2012105734A1 (en) * | 2011-01-31 | 2012-08-09 | Yun Man-Sun | Piezo actuator having an electrode structure for a torsional vibration mode, and rotation-type ultrasonic motor including same |
| CN103414373A (en) * | 2013-08-26 | 2013-11-27 | 苏州科技学院 | Single-incentive rotating ultrasonic motor |
| CN204271941U (en) * | 2014-12-09 | 2015-04-15 | 苏州科技学院 | Single excitation ultrasonic elliptical vibratory precision conveying device |
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Address after: 215009 Suzhou City, Jiangsu province high tech Zone CREE Road, No. 1 Applicant after: Suzhou University of Science and Technology Address before: 215009 Suzhou City, Jiangsu province high tech Zone CREE Road, No. 1 Applicant before: University of Science and Technology of Suzhou |
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| CB03 | Change of inventor or designer information |
Inventor after: Yin Zhen Inventor after: Wang Bangfu Inventor after: Li Yan Inventor after: Song Juan Inventor after: Zhang Lei Inventor after: Wu Lei Inventor after: Xu Tie Inventor after: Yang Xinming Inventor before: Wang Bangfu Inventor before: Yin Zhen Inventor before: Li Yan Inventor before: Song Juan |
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Application publication date: 20150311 |