CN103406250B - Single excitation ultrasonic elliptical vibratory transducer - Google Patents
Single excitation ultrasonic elliptical vibratory transducer Download PDFInfo
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- CN103406250B CN103406250B CN201310373888.9A CN201310373888A CN103406250B CN 103406250 B CN103406250 B CN 103406250B CN 201310373888 A CN201310373888 A CN 201310373888A CN 103406250 B CN103406250 B CN 103406250B
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- 230000005284 excitation Effects 0.000 title claims abstract description 29
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- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses 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, and 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, for inclined wedge-shaped structure, the longitudinal ultrasonic vibration that single-excitation ultrasonic oval vibration energy converter produces can be converted to the vertical curved composite ultrasonic elliptical vibratory of elliptical vibration modal transducer end by this elliptical vibration modal transducer.The present invention adopts sandwich type structural, has the advantages such as power capacity is large, structure simple, elliptical vibration modal transducer part-structure rigidity is large, energy conversion efficiency is high, stable work in work.
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.
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 outline is cylindrical, it 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 connected compression by bolt by back shroud and front shroud, constitute the energy conversion part of single-excitation ultrasonic oval vibration energy converter, the ultrasonic electric energy that ultrasonic-frequency power supply exports is converted to the ultrasonic vibrational energy of single-excitation ultrasonic oval vibration energy converter.
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 connection stud elliptical vibration modal transducer to be connected in the front end of front shroud.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.
The object making elliptical vibration modal transducer form 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.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, and the rigidity of structure is large, easy to manufacture, cost is low, control-driven system is simple and vibration performance such as to stablize at the advantage.
Further, the front shroud of described list excitation ultrasonic elliptical vibratory transducer is provided with ring flange, for connecting of single excitation ultrasonic elliptical vibratory transducer and external structure.
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 single-excitation ultrasonic oval vibration energy converter elliptical vibration modal transducer end, 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. ring flange, 7. elliptical vibration modal transducer, 8. ultrasonic-frequency power supply
Detailed description of the invention
Composition graphs 1, shown in 2, single excitation ultrasonic elliptical vibratory transducer, comprise single-excitation ultrasonic oval vibration energy converter and elliptical vibration modal transducer 7, single-excitation ultrasonic oval vibration energy converter outline is cylindrical, it 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 is provided with the ring flange 6 that can connect with external structure, back shroud 2 and front shroud 5 pass through bolt 1 by back shroud 2, piezoelectric ceramic piece 3, electrode slice 4 and front shroud 5 connect compression, 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 single-excitation ultrasonic oval vibration energy converter, 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, 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 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.
Single excitation ultrasonic elliptical vibratory transducer intrinsic frequency is 24.82KHz, impedance is 76 ohm, dynamic electric resistor is 18 ohm, ultrasonic-frequency power supply 8 output voltage range is 0-400V, current range is 0-4A, output frequency is 24.82 ± 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 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, namely the vertical curved composite ultrasonic elliptical vibratory of elliptical vibration modal transducer 7 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 220V, electric current is 1.20A, the ultrasonic elliptical vibratory length semiaxis amplitude using laser doppler vibrometer to record elliptical vibration modal transducer 7 end is respectively 11.2 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 2.67 can be obtained.
Claims (4)
1. 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 outline is cylindrical, it 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 connected compression by bolt by back shroud and front shroud; It is characterized in that: described elliptical vibration modal transducer is arranged on the front end of front shroud, for 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.
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 an one-piece parts.
3. single excitation ultrasonic elliptical vibratory transducer according to claim 1, is characterized in that: also comprise one and connect stud, for elliptical vibration modal transducer being connected in the front end of front shroud.
4. single excitation ultrasonic elliptical vibratory transducer according to claim 1, is characterized in that: front shroud is provided with ring flange, for connecting of single excitation ultrasonic elliptical vibratory transducer and external structure.
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| CN201310373888.9A CN103406250B (en) | 2013-08-26 | 2013-08-26 | Single excitation ultrasonic elliptical vibratory transducer |
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| CN201310373888.9A CN103406250B (en) | 2013-08-26 | 2013-08-26 | Single excitation ultrasonic elliptical vibratory transducer |
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| CN103406250B true CN103406250B (en) | 2015-08-05 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104475318A (en) * | 2014-11-19 | 2015-04-01 | 东莞市优超精密技术有限公司 | Low-impedance ultrasonic machining energy converter |
| CN104475320B (en) * | 2014-12-09 | 2017-01-11 | 苏州科技学院 | Single-excitation ultrasonic elliptical vibration micro-machining work platform |
| CN104439890B (en) * | 2014-12-09 | 2017-12-08 | 苏州科技大学 | Single excitation ultrasonic elliptical vibratory extruding machining apparatus |
| CN104440560B (en) * | 2014-12-09 | 2017-05-17 | 苏州科技大学 | Single excitation ultrasonic elliptic vibration grinding wheel dressing 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 |
| CN104439892B (en) * | 2014-12-09 | 2017-08-11 | 苏州科技大学 | A kind of single excitation ultrasonic elliptical vibratory extruding machining apparatus |
| CN104438029B (en) * | 2014-12-09 | 2016-08-24 | 苏州科技学院 | A kind of single excitation ultrasonic elliptical vibratory microfabrication work platforms |
| CN106239230B (en) * | 2016-08-30 | 2018-06-01 | 四川大学 | A kind of design method of ultrasonic elliptical vibratory cutting device |
| CN111495722B (en) * | 2019-01-30 | 2021-05-07 | 成都科汇模具有限公司 | Medical ultrasonic knife transducer |
| CN114453228A (en) * | 2021-12-30 | 2022-05-10 | 广东工业大学 | Ultrasonic transmission component |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09121573A (en) * | 1995-10-27 | 1997-05-06 | Olympus Optical Co Ltd | Ultrasonic vibrator and ultrasonic motor using it |
| CN101804575A (en) * | 2010-03-05 | 2010-08-18 | 清华大学 | Elliptical ultrasonic vibration auxiliary cutting device with adjustable track |
| CN103191859A (en) * | 2013-05-08 | 2013-07-10 | 苏州科技学院 | Single driven ultrasonic elliptical vibration transducer |
| CN203484326U (en) * | 2013-08-26 | 2014-03-19 | 苏州科技学院 | Single-actuator ultrasonic elliptical vibration transducer |
-
2013
- 2013-08-26 CN CN201310373888.9A patent/CN103406250B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09121573A (en) * | 1995-10-27 | 1997-05-06 | Olympus Optical Co Ltd | Ultrasonic vibrator and ultrasonic motor using it |
| CN101804575A (en) * | 2010-03-05 | 2010-08-18 | 清华大学 | Elliptical ultrasonic vibration auxiliary cutting device with adjustable track |
| CN103191859A (en) * | 2013-05-08 | 2013-07-10 | 苏州科技学院 | Single driven ultrasonic elliptical vibration transducer |
| CN203484326U (en) * | 2013-08-26 | 2014-03-19 | 苏州科技学院 | Single-actuator ultrasonic elliptical vibration transducer |
Non-Patent Citations (1)
| Title |
|---|
| 新型单激励椭圆超声振动切削系统的研究;李华 等;《中国机械工程》;20051130;第16卷(第22期);第1983-1990页及图1-11 * |
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Inventor after: Yin Zhen Inventor after: Wang Zhongwang Inventor after: Cao Ziyang Inventor after: Li Hua Inventor after: Li Zheng Inventor after: Li Huan Inventor after: Bai Yongting Inventor after: Chen Yuan Inventor after: Yang Xinming Inventor after: Ding Wenyu Inventor before: Yin Zhen Inventor before: Lv Ziqiang Inventor before: Li Hua Inventor before: Cao Ziyang Inventor before: Li Yan Inventor before: Wang Bangfu Inventor before: Xie Ou Inventor before: Liu Yisheng Inventor before: Wu Yongzhi Inventor before: Li Zheng |
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Free format text: CORRECT: INVENTOR; FROM: YIN ZHEN LI HUA CAO ZIYANG LI YAN WANG BANGFU XIE OU LIU YISHENG WU YONGZHI LI ZHENG LV ZIQIANG TO: YIN ZHEN CAO ZIYANG LI HUA LI ZHENG LI HUAN BAI YONGTING CHEN YUAN YANG XINMING DING WENYU WANG ZHONGWANG |
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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: 215009 Suzhou City, Jiangsu province high tech Zone CREE Road, No. 1 Patentee before: University of Science and Technology of Suzhou |
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Effective date of registration: 20191125 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 |