CN103191859B - Single driven ultrasonic elliptical vibration transducer - Google Patents
Single driven ultrasonic elliptical vibration transducer Download PDFInfo
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- CN103191859B CN103191859B CN201310164627.6A CN201310164627A CN103191859B CN 103191859 B CN103191859 B CN 103191859B CN 201310164627 A CN201310164627 A CN 201310164627A CN 103191859 B CN103191859 B CN 103191859B
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Abstract
The invention discloses a single driven ultrasonic elliptical vibration transducer. The single driven ultrasonic elliptical vibration transducer comprises an ultrasonic vibration transducer and an elliptical vibration mode converter, wherein the ultrasonic vibration transducer comprises a bolt and a rear cover plate, a piezoelectric ceramic piece, an electrode slice and a front cover plate which are sequentially sheathed on the bolt, the rear cover plate, the piezoelectric ceramic piece, the electrode slice and the front cover plate are tightly pressed and fixed by a front cover plate and the bolt through threaded connection, the elliptical vibration mode converter is arranged at the front end of the front cover plate and takes the shape of a cylinder on the whole, and three rectangular notches which are distributed in a staggered manner are respectively formed in the upper side and the lower side of the elliptical vibration mode converter and can be used for converting longitudinal ultrasonic vibration generated by the ultrasonic vibration transducer into longitudinal bending composite ultrasonic elliptical vibration. The single driven ultrasonic elliptical vibration transducer adopts a sandwich type structure, and has the advantages of high power capacity, simple structure, high energy conversion efficiency, stable working performance and the like.
Description
Technical field
The present invention relates to the ultrasonic vibration field utilizing piezoelectric ceramics inverse piezoelectric effect, especially relate to a kind of single excitation ultrasonic elliptical vibratory transducer.
Background technology
Ultrasonic elliptical vibratory has in fields such as UVC, ultra-sonic welded, ultrasonic grinding, ultrasonic polishing, linear ultrasonic motor and rotary ultrasonic motors to be applied more widely.Current researcher adopts extensional vibration mostly, twisting vibration, two kinds of vibration modes in flexural vibrations and radial vibration carry out compound to produce ultrasonic elliptical vibratory, the piezoelectric ceramic piece adopting two groups or more is needed to excite the two or more mode of oscillations producing and have certain phase difference, also be necessary for often group piezoelectric ceramic piece and be equipped with a road ultrasound-driven power supply signal, and need to control the phase difference between the ultrasound-driven power supply signal of each road, ultrasonic vibration system and Control system architecture complexity, manufacture difficulty is large, control difficulty is high, production cost is high, not easily realize microminiaturization, service behaviour is stable not, these problems constrain the application in the industrial production of ultrasonic elliptical vibratory transducer and popularization.
In order to overcome the deficiency in above-mentioned ultrasonic elliptical vibratory transducer technology, volume the 2nd phase in " BJ University of Aeronautics & Astronautics's journal " February the 31st in 2005 upper paper " the elliptical vibration cutting transducer based on finite element analysis ", the asymmetric ultrasonic elliptical vibratory of structure proposing a kind of single signal of telecommunication excitation cuts transducer, and finite element dynamic analysis and experimental study have been carried out to this transducer, achieve good experiment effect, but the conversion of extensional vibration to flexural vibrations will be improved further, improve the ratio of elliptical vibration track minor axis and major axis, improve cutting effect, the mode only relying on side, ultrasonic transformer front end interpolation mass and cutter is dissatisfactory, and from ultrasonic transformer to additional mass and from additional mass to cutter, need twice physical connection, the ultrasonic vibrational energy from PZT (piezoelectric transducer) to cutter is caused to be lost larger, have impact on ultrasonic elliptical vibratory cutting effect.
Summary of the invention
The invention provides a kind of novel list excitation ultrasonic elliptical vibratory transducer, object is to overcome the deficiency existed in above-mentioned single excitation single-excitation ultrasonic oval vibration energy converter.
A kind of single excitation ultrasonic elliptical vibratory transducer, comprise single-excitation ultrasonic oval vibration energy converter and elliptical vibration modal transducer, described single-excitation ultrasonic oval vibration energy converter comprises bolt and is set in back shroud, piezoelectric ceramic piece, electrode slice and the front shroud on bolt successively, back shroud, piezoelectric ceramic piece, electrode slice and front shroud are fixed by thread connection by front shroud and bolt, constitute the energy conversion part of single excitation ultrasonic elliptical vibratory transducer, 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 is arranged on the front end of front shroud, its entirety is cylindrical, upper and lower both sides offer three rectangular indentation be dislocatedly distributed, the object arranging rectangular indentation is to change single mode of oscillation encouraging ultrasonic elliptical vibratory transducer, make its longitudinal vibration mode frequency and flexural vibration mode frequency close to or equal, 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.
Described elliptical vibration modal transducer and front shroud are made into the front end that is integrally provided in front shroud, or utilize an additional attachment bolt elliptical vibration modal transducer to be connected in the front end of front shroud.Compare the list excitation ultrasonic elliptical vibratory transducer that existing document is introduced, this list excitation ultrasonic elliptical vibratory transducer 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 transducer only has one group of extensional vibration piezoelectric ceramic piece.
Further, described list excitation ultrasonic elliptical vibratory transducer Zhi Xu mono-road ultrasonic electric signal excitation.
Further, the operating frequency range of single excitation ultrasonic elliptical vibratory transducer is 18kHz-40kHz.
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 ultrasonic transducer elliptical vibration modal transducer, simplify the overall structure of single excitation ultrasonic elliptical vibratory transducer, greatly reduce the complexity of vibrational system, reduce manufacture, assembly difficulty and production cost, whole single excitation ultrasonic elliptical vibratory transducer architecture 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 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. elliptical vibration modal transducer, 7. rectangular indentation, 8. ultrasonic-frequency power supply
Detailed description of the invention
Composition graphs 1, shown in 2, a kind of single excitation ultrasonic elliptical vibratory transducer, comprise single-excitation ultrasonic oval vibration energy converter and elliptical vibration modal transducer 6, described single-excitation ultrasonic oval vibration energy converter comprises bolt 1 and is set in the back shroud 2 on bolt 1 successively, piezoelectric ceramic piece 3, electrode slice 4 and front shroud 5, front shroud 5 and bolt 1 by thread connection by back shroud 2, piezoelectric ceramic piece 3, electrode slice 4 and front shroud 5 are fixed, constitute the energy conversion part of single excitation ultrasonic elliptical vibratory transducer, the ultrasonic electric energy that ultrasonic-frequency power supply 8 exports can be converted to the ultrasonic vibrational energy of ultrasonic transducer, single excitation ultrasonic elliptical vibratory transducer only has one group of extensional vibration piezoelectric ceramic piece 3, piezoelectric ceramic transducer section diameter 30mm, piezoelectric ceramic piece 3 is PZT-8, be of a size of:
Ф 30 × Ф 15 × 5, sheet number is 2.
Described elliptical vibration modal transducer 6 and front shroud 5 are made into the front end that is integrally provided in front shroud 5, elliptical vibration modal transducer 6 entirety is cylindrical, diameter 15mm, upper and lower both sides offer three rectangular indentation be dislocatedly distributed 7, three rectangular indentation 7 width are 6mm, and the degree of depth is 3mm, and the distance of the centre-to-centre spacing front end face of three rectangular indentation 7 is respectively 15mm, 25mm, 35mm.
Single excitation ultrasonic elliptical vibratory transducer intrinsic frequency is 25.32KHz, impedance is 96 ohm, dynamic electric resistor is 17 ohm, ultrasonic-frequency power supply 8 output voltage range is 0-400V, current range is 0-4A, output frequency is 25.32 ± 0.01KHz, and ultrasonic-frequency power supply 8 has automatic frequency tracking function in designated frequency range.。
During operation, after list encourages the electrode slice 4 of ultrasonic elliptical vibratory transducer to access the signal of telecommunication of ultrasonic-frequency power supply 8 output, due to the inverse piezoelectric effect of piezoelectric ceramic piece 3, piezoelectric ceramic piece 3 will produce longitudinal ultrasonic vibration, namely the electric energy that ultrasonic-frequency power supply 8 exports is converted to ultrasonic vibrational energy by single-excitation ultrasonic oval vibration energy converter, and drive whole transducer system to carry out longitudinal ultrasonic vibration, after ultrasonic vibrational energy is delivered to elliptical vibration modal transducer 6 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 6 end is converted to.
When single excitation ultrasonic elliptical vibratory transducer on-load voltage, run after within 10 minutes, reaching stable vibration state, the output voltage of ultrasonic-frequency power supply 8 is 240V, electric current is 1.45A, the ultrasonic elliptical vibratory length semiaxis amplitude using laser doppler vibrometer to record elliptical vibration modal transducer 6 end is respectively 10.3 microns and 4.2 microns, and by the dual trace oscilloscope with lissajouf figure calculation function, graphic operation is carried out to the signal that laser doppler vibrometer records, the ultrasonic elliptical vibratory track that axial ratio is 2.45 can be obtained.
Claims (3)
1. a single excitation ultrasonic elliptical vibratory transducer: comprise single-excitation ultrasonic oval vibration energy converter and elliptical vibration modal transducer, described single-excitation ultrasonic oval vibration energy converter comprises bolt and is set in back shroud, piezoelectric ceramic piece, electrode slice and the front shroud on bolt successively, and back shroud, piezoelectric ceramic piece, electrode slice and front shroud are fixed by thread connection by front shroud and bolt; It is characterized in that: described elliptical vibration modal transducer is arranged on the front end of front shroud, its entirety is cylindrical, and upper and lower both sides offer three rectangular indentation be dislocatedly distributed.
2. single excitation ultrasonic elliptical vibratory transducer 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 transducer according to claim 1, is characterized in that: also comprise an attachment bolt, for elliptical vibration modal transducer being connected in the front end of front shroud.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310164627.6A CN103191859B (en) | 2013-05-08 | 2013-05-08 | Single driven ultrasonic elliptical vibration transducer |
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| CN201310164627.6A CN103191859B (en) | 2013-05-08 | 2013-05-08 | Single driven ultrasonic elliptical vibration transducer |
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| CN103191859A CN103191859A (en) | 2013-07-10 |
| CN103191859B true CN103191859B (en) | 2015-05-13 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103447557B (en) * | 2013-08-26 | 2015-11-18 | 苏州科技学院 | Single excitation ultrasonic elliptical vibratory truning fixture |
| CN103406250B (en) * | 2013-08-26 | 2015-08-05 | 苏州科技学院 | Single excitation ultrasonic elliptical vibratory transducer |
| CN104440573A (en) * | 2014-12-09 | 2015-03-25 | 苏州科技学院 | Single electrical signal excitation ultrasonic elliptic vibration grinding wheel dressing device |
| CN104439683A (en) * | 2014-12-09 | 2015-03-25 | 苏州科技学院 | Single excitation ultrasonic elliptic vibration metal welding device |
| CN104440140A (en) * | 2014-12-09 | 2015-03-25 | 苏州科技学院 | Single electrical signal excitation ultrasonic elliptic vibration micro-machining working platform |
| CN104439891B (en) * | 2014-12-09 | 2017-10-31 | 苏州科技大学 | A kind of single-electrical signal encourages ultrasonic elliptical vibratory extruding machining apparatus |
| CN105587623B (en) * | 2015-05-08 | 2019-07-12 | 长春工业大学 | A kind of active hydraulic jet propulsion system of sandwich mode conversion and its driving method |
| CN107930499A (en) * | 2018-01-05 | 2018-04-20 | 苏州科技大学 | A kind of ultrasonic wave disturbs hydrophone |
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|---|---|---|---|---|
| JPH0373207A (en) * | 1989-08-15 | 1991-03-28 | Taga Electric Co Ltd | Ultrasonic rotary machining device |
| JP3406165B2 (en) * | 1996-12-09 | 2003-05-12 | 愛三工業株式会社 | Ultrasonic transducer |
| CN101804575A (en) * | 2010-03-05 | 2010-08-18 | 清华大学 | Elliptical ultrasonic vibration auxiliary cutting device with adjustable track |
| CN102528572A (en) * | 2011-12-13 | 2012-07-04 | 河南理工大学 | Single driven ultrasonic elliptical vibrating device |
| CN103028540A (en) * | 2012-12-11 | 2013-04-10 | 杭州成功超声设备有限公司 | Ultrasonic tool head |
| CN203253608U (en) * | 2013-05-08 | 2013-10-30 | 苏州科技学院 | Single-actuator ultrasonic elliptical vibration transducer |
-
2013
- 2013-05-08 CN CN201310164627.6A patent/CN103191859B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0373207A (en) * | 1989-08-15 | 1991-03-28 | Taga Electric Co Ltd | Ultrasonic rotary machining device |
| JP3406165B2 (en) * | 1996-12-09 | 2003-05-12 | 愛三工業株式会社 | Ultrasonic transducer |
| CN101804575A (en) * | 2010-03-05 | 2010-08-18 | 清华大学 | Elliptical ultrasonic vibration auxiliary cutting device with adjustable track |
| CN102528572A (en) * | 2011-12-13 | 2012-07-04 | 河南理工大学 | Single driven ultrasonic elliptical vibrating device |
| CN103028540A (en) * | 2012-12-11 | 2013-04-10 | 杭州成功超声设备有限公司 | Ultrasonic tool head |
| CN203253608U (en) * | 2013-05-08 | 2013-10-30 | 苏州科技学院 | Single-actuator ultrasonic elliptical vibration transducer |
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| CN103191859A (en) | 2013-07-10 |
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Address after: 215021 No. 298 Binhe Road, Suzhou City, Jiangsu Province Patentee after: Suzhou University of Science and Technology Address before: 215001 No. 1 CREE Road, hi tech Zone, Jiangsu, Suzhou Patentee before: University of Science and Technology of Suzhou |
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Effective date of registration: 20191126 Address after: No. 88, Jinhe Road, bazha Town, Wujiang District, Suzhou City, Jiangsu Province Patentee after: Jiangsu Jiuxiang Aviation Equipment Co., Ltd Address before: 215021 No. 298 Binhe Road, Suzhou City, Jiangsu Province Patentee before: Suzhou University of Science and Technology |