CN104410321B - A kind of single excitation ultrasonic elliptical vibratory many oscillators device for transporting objects - Google Patents
A kind of single excitation ultrasonic elliptical vibratory many oscillators device for transporting objects Download PDFInfo
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- CN104410321B CN104410321B CN201410740447.2A CN201410740447A CN104410321B CN 104410321 B CN104410321 B CN 104410321B CN 201410740447 A CN201410740447 A CN 201410740447A CN 104410321 B CN104410321 B CN 104410321B
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Abstract
The invention discloses a kind of single excitation ultrasonic elliptical vibratory many oscillators device for transporting objects, it is mainly used in the most accurate conveying of strip-shaped materials, the present invention uses multiple oscillator as excitor, and each oscillator includes single-excitation ultrasonic oval vibration energy converter, elliptical vibration modal transducer and is arranged on the friction-driven block of elliptical vibration modal transducer front end；Described single-excitation ultrasonic oval vibration energy converter includes that back shroud, piezoelectric ceramic piece, electrode slice and front shroud are coupled compression by bolt by bolt and the back shroud being sequentially sleeved on bolt, piezoelectric ceramic piece, electrode slice and front shroud, back shroud and front shroud；Elliptical vibration modal transducer is arranged on the front end of single-excitation ultrasonic oval vibration energy converter, for straight beam and the composite construction of cant beam, 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 and friction-driven block by this elliptical vibration modal transducer, when multiple oscillators are operated simultaneously, strip-shaped materials is driven to move continuously.
Description
Technical field
The present invention relates to the use of the vibration precision transportation art of piezoelectric ceramics inverse piezoelectric effect, especially relate to a kind of many oscillators device for transporting objects utilizing single excitation ultrasonic elliptical vibratory to be driven.
Background technology
The field such as automated production processing and assembling such as prepare at medicine, chemical industry, food, machinery, material, material and the transmission of parts and assembling, have been used up traditional low-frequency high-amplitude electric and magnetic oscillation transmitting device, during the work of this device, noise is more, dispensing precision is low, being not easy to realize precise closed-loop control, power volume is little, and these problems govern the raising of accurate transmission systematic entirety energy always.
The excess sound pressure electric drive having developed rapidly and having applied since the eighties in 20 century provides opportunity for accurate transmission system, it is by the rubbing action between stator and mover, the micro breadth oscillation of elastomer is converted into macroscopical straight line (rotation) motion of mover, pushes directly on load.Because of its have that volume is little, lightweight, low-speed big, noise are little, response is fast, positioning precision is high, without advantages such as electromagnetic interference and environmental suitability are strong, obtained increasingly extensive application in technical fields such as medical treatment, Aero-Space, robot, MEMS.
But existing traveling-wave ultrasonic conveyer device also exist row wave attenuation be restricted compared with big, long distance delivery be difficult to, material maldistribution, deficiency such as structure is complicated, output is little, manufactures is difficult, and life-span higher, relatively costly to manufacture matching requirements is short in delivered length.These problems constrain they application in the industrial production.
Summary of the invention
The invention provides a kind of novel list excitation ultrasonic elliptical vibratory many oscillators device for transporting objects, purpose is not enough in order to overcome present in existing material precision conveying device, simplify vibration precision conveying device structure, reduce manufacture difficulty, reduce cost, raising service life and improve system job stability.
A kind of list encourages ultrasonic elliptical vibratory many oscillators device for transporting objects, and it uses multiple oscillator as excitor, and each oscillator includes single-excitation ultrasonic oval vibration energy converter, elliptical vibration modal transducer and friction-driven block；Described single-excitation ultrasonic oval vibration energy converter is overall in cylinder, it includes bolt and the back shroud being sequentially sleeved on bolt, piezoelectric ceramic piece, electrode slice and front shroud, it is provided with the ring flange that can couple with other constructional device, back shroud and front shroud on front shroud, by bolt, back shroud, piezoelectric ceramic piece, electrode slice and front shroud is coupled compression；Constitute single energy conversion part encouraging ultrasonic elliptical vibratory many oscillators device for transporting objects, 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 fabricated to a front end being integrally provided in front shroud, or the welding of elliptical vibration modal transducer is arranged on the front end of front shroud.Elliptical vibration modal transducer includes the composite construction that straight beam and cant beam are constituted, straight beam and cant beam are perpendicular to the cross section of its center axis and are rectangle, the central axis of straight beam and the central axes of single-excitation ultrasonic oval vibration energy converter, one end of straight beam couples with the front shroud of ultrasonic transducer, and the other end overhangs；The side of one end of cant beam and the front shroud off-center axis of ultrasonic transducer couples, the middle part of the other end and straight beam couples, the central axis of cant beam becomes 0-90 degree angle, straight beam and cant beam to be arc transition with the connection place of ultrasonic transducer front shroud to couple with the central axis of straight beam.
The molectron that elliptical vibration modal transducer is constituted after being arranged on single-excitation ultrasonic oval vibration energy converter front end is referred to as single excitation ultrasonic elliptical vibratory transducer, elliptical vibration modal transducer is that the purpose of straight beam and cant beam composite construction is in order to change single mode of oscillation encouraging ultrasonic elliptical vibratory transducer so that it is longitudinal vibration mode frequency and flexural vibration mode frequency are close or equal；Existence due to oblique beam structure, the longitudinal ultrasonic vibration that single-excitation ultrasonic oval vibration energy converter produces is after being delivered to cant beam, it is decomposed into a part of extensional vibration component and a part of bending vibration component at cant beam root, the extensional vibration component that decomposes when cant beam and after bending vibration component is delivered to straight beam, it is combined mutually with the extensional vibration propagated on straight beam, finally in the formation of straight beam end, there is the extensional vibration component of certain phase contrast and the ultrasonic elliptical vibratory that bending vibration component is compound.
Described friction-driven block is arranged on the front end of elliptical vibration modal transducer by welding, bonding or screw attachment mode, friction-driven block contacts with strip-shaped materials, the length of strip-shaped materials should be greater than the spacing of two friction-driven blocks of 2 times, the half being smaller than carried material length that the most described oscillator is arranged along material conveying direction.The ring flange of single-excitation ultrasonic oval vibration energy converter is used for installing oscillator and precompression device, multiple oscillators connecting into one and is monolithically fabricated single excitation ultrasonic elliptical vibratory many oscillators device for transporting objects, the angle between single-excitation ultrasonic oval vibration energy converter axis and horizontal plane after ring flange and support are fixing is 0 degree ~ 90 degree.
Described oscillator is along the direction spaced set that material carries, and its path is straight line path or curved path；Described oscillator is arranged parallel along the single-row setting in the direction that material carries or multiple row.
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, single-excitation ultrasonic oval vibration energy converter i.e. produces supersonic vibration, ultrasonic vibrational energy is after single-excitation ultrasonic oval vibration energy converter is delivered to elliptical vibration modal transducer end, the extensional vibration being converted to there is certain phase contrast and the compound vertical curved composite ultrasonic elliptical vibratory of bending vibration, i.e. be converted to the vertical curved composite ultrasonic elliptical vibratory of elliptical vibration modal transducer end, and drive friction-driven block to do ultrasonic elliptical vibratory together with elliptical vibration modal transducer end, and then drive strip-shaped materials to move continuously.Compare the device for transporting objects that existing document is introduced, the advantages such as this list excitation ultrasonic elliptical vibratory many oscillators device for transporting objects has that power capacity is big, energy conversion efficiency is high, simple in construction, easy to manufacture, low cost, the rigidity of structure big, it is simple to control drive system and vibration performance is stable.
Further, each oscillator of described list excitation ultrasonic elliptical vibratory many oscillators device for transporting objects all only has one group of extensional vibration piezoelectric ceramic piece.
Further, multiple oscillator Zhi Xu mono-roads ultrasonic electric signal excitation of described list excitation ultrasonic elliptical vibratory many oscillators device for transporting objects.
Present invention employs mechanical vibration MODAL TRANSFORMATION OF A mechanism and the extensional vibration of single-excitation ultrasonic oval vibration energy converter is changed the extensional vibration being decomposed into straight beam, the extensional vibration of cant beam and bending vibration component, finally synthesize vertical curved composite ultrasonic elliptical vibratory at straight beam end, simplify single overall structure encouraging ultrasonic elliptical vibratory many oscillators device for transporting objects, greatly reduce the complexity of vibrational system, reduce manufacture, assembly difficulty and production cost, whole single excitation ultrasonic elliptical vibratory many oscillators device for transporting objects simple in construction, easy to manufacture, be conducive to being miniaturized the realization of target；Additionally this invention only needs a road control circuit and ultrasonic electric signal to encourage, control difficulty low, avoid two-phase or multiphase supersonic vibration and be compounded to form the complicated ultrasonic-frequency power supply development cost of 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, it is easily achieved the miniaturization of 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 the structural representation of the present invention.
Fig. 2 is single front view encouraging ultrasonic elliptical vibratory transducer in the present invention.
Fig. 3 is single left view encouraging ultrasonic elliptical vibratory transducer in the present invention.
Fig. 4 is the application example schematic diagram of the present invention.
Label declaration in figure: 1. bolt, 2. back shroud, 3. piezoelectric ceramic piece, 4. electrode slice, 5. front shroud, 6. ring flange, 7. elliptical vibration modal transducer, 8. friction-driven block, 9. strip-shaped materials, 10. ultrasonic-frequency power supply.
Detailed description of the invention
Shown in Fig. 1,2,3, a kind of single excitation ultrasonic elliptical vibratory many oscillators device for transporting objects, it uses 5 oscillators as excitor, and 5 aligned spaced sets of oscillator, each oscillator includes single-excitation ultrasonic oval vibration energy converter, elliptical vibration modal transducer 7 and friction-driven block 8；Single-excitation ultrasonic oval vibration energy converter is overall in cylinder, it includes bolt 1 and the back shroud 2 being sequentially sleeved on bolt 1, piezoelectric ceramic piece 3, electrode slice 4 and front shroud 5, the ring flange 6 that can couple it is provided with other constructional device on front shroud 5, back shroud 2, piezoelectric ceramic piece 3, electrode slice 4 and front shroud 5 are coupled compression by bolt 1 by back shroud 2 and front shroud 5, constituting single energy conversion part encouraging ultrasonic elliptical vibratory many oscillators device for transporting objects, the ultrasonic electric energy exported by ultrasonic-frequency power supply 10 is converted to the ultrasonic vibrational energy of single-excitation ultrasonic oval vibration energy converter.Each oscillator of this list excitation ultrasonic elliptical vibratory many oscillators device for transporting objects only has one group of extensional vibration piezoelectric ceramic piece 3, transducer piezoelectric ceramics section diameter 30mm, and the material of piezoelectric ceramic piece 3 is PZT-8, 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 fabricated to an one-piece parts and are arranged on the front end of front shroud 5, elliptical vibration modal transducer 7 includes the composite construction that straight beam and cant beam are constituted, straight beam and cant beam are perpendicular to the cross section of its center axis and are rectangle, the central axis of straight beam and the central axes of single-excitation ultrasonic oval vibration energy converter, one end of straight beam couples with the front shroud 5 of ultrasonic transducer, the other end overhangs, and the cross section length of side is 12×12mm, long 72mm；The side of one end of cant beam and the front shroud 5 off-center axis of ultrasonic transducer couples, and the middle part that central axis distance is 25mm, the other end and straight beam of the connection place distance front shroud 5 of cant beam central axis and front shroud 5 couples, and the cross section length of side is 12×12mm.The central axis of cant beam becomes 30 angles, straight beam and cant beam to be arc transition with the connection place of ultrasonic transducer front shroud 5 to couple with the central axis of straight beam, and transition arc radius is 5mm.
Friction-driven block 8 is by the bonding front end being arranged on elliptical vibration modal transducer 7, and friction-driven block 8 contacts with strip-shaped materials 9, and the spacing of two friction-driven blocks 8 is 40mm.The a length of 90mm of strip-shaped materials 9, the ring flange 6 utilizing single-excitation ultrasonic oval vibration energy converter carries out installing and precompression device, multiple oscillators connecting into one and is monolithically fabricated single excitation ultrasonic elliptical vibratory many oscillators device for transporting objects, the angle between single-excitation ultrasonic oval vibration energy converter axis and horizontal plane after ring flange 6 and support are fixing is 75 degree.
The natural frequency of single excitation ultrasonic elliptical vibratory each oscillator of many oscillators device for transporting objects is 19.84KHz, impedance is 70 ~ 80 ohm, dynamic electric resistor is 14 ~ 25 ohm, the ultrasonic electric signal excitation of this conveyer device Zhi Xu mono-road, ultrasonic-frequency power supply 10 output voltage range is 0-400V, current range is 0-4A, and output frequency is 19.84 ± 0.01KHz, and ultrasonic-frequency power supply 10 has automatic frequency tracking function in designated frequency range.
Shown in Fig. 4, after the ultrasonic electric signal of ultrasonic-frequency power supply 10 output is linked into the electrode slice 4 of single-excitation ultrasonic oval vibration energy converter, single-excitation ultrasonic oval vibration energy converter i.e. produces supersonic vibration, ultrasonic vibrational energy is after single-excitation ultrasonic oval vibration energy converter is delivered to elliptical vibration modal transducer 7 end, the extensional vibration being converted to have certain phase contrast and the compound vertical curved composite ultrasonic elliptical vibratory of bending vibration, be i.e. converted to the vertical curved composite ultrasonic elliptical vibratory of elliptical vibration modal transducer 7 end；And drive friction-driven block 8 to do ultrasonic elliptical vibratory together with elliptical vibration modal transducer 7 end.After running 10 minutes, system reaches stable vibration state, the output voltage of ultrasonic-frequency power supply 10 is 220V, and electric current is 11.8A, after friction-driven block 8 contacts with strip-shaped materials 9, driving strip-shaped materials 9 to carry out continuous linear motion, the velocity peak values of strip-shaped materials 9 is 24.3mm/s.
Claims (6)
1. single excitation ultrasonic elliptical vibratory many oscillators device for transporting objects, it is characterized in that: single excitation ultrasonic elliptical vibratory many oscillators device for transporting objects uses multiple oscillators as excitor, and each oscillator includes single-excitation ultrasonic oval vibration energy converter, elliptical vibration modal transducer and friction-driven block；Described single-excitation ultrasonic oval vibration energy converter is overall in cylinder, it includes bolt and the back shroud being sequentially sleeved on bolt, piezoelectric ceramic piece, electrode slice and front shroud, it is provided with the ring flange that can couple with other constructional device, back shroud and front shroud on front shroud, by bolt, back shroud, piezoelectric ceramic piece, electrode slice and front shroud is coupled compression；Described elliptical vibration modal transducer is arranged on the front end of front shroud, described elliptical vibration modal transducer includes the composite construction that straight beam and cant beam are constituted, straight beam and cant beam are perpendicular to the cross section of its center axis and are rectangle, the central axis of straight beam and the central axes of single-excitation ultrasonic oval vibration energy converter, one end of straight beam couples with the front shroud of ultrasonic transducer, and the other end overhangs；The side of one end of cant beam and the front shroud off-center axis of ultrasonic transducer couples, the middle part of the other end and straight beam couples, the central axis of cant beam becomes 0-90 degree angle, straight beam and cant beam to be arc transition with the connection place of ultrasonic transducer front shroud to couple with the central axis of straight beam；Described friction-driven block is arranged on the front end of elliptical vibration modal transducer；The angle between single-excitation ultrasonic oval vibration energy converter axis and horizontal plane after ring flange and support are fixing is 0 ~ 90 degree；Described oscillator is along the direction spaced set that material carries, its path is straight line path or curved path, described oscillator is arranged parallel along the single-row setting in the direction that material carries or multiple row, the half being smaller than carried material length that described oscillator is arranged along material conveying direction；Each oscillator of described list excitation ultrasonic elliptical vibratory many oscillators device for transporting objects all only has one group of extensional vibration piezoelectric ceramic piece；Multiple oscillator Zhi Xu mono-roads ultrasonic electric signal excitation of described list excitation ultrasonic elliptical vibratory many oscillators device for transporting objects.
Single excitation ultrasonic elliptical vibratory many oscillators device for transporting objects the most according to claim 1, it is characterised in that: described elliptical vibration modal transducer and front shroud are fabricated to a front end being integrally provided in front shroud.
Single excitation ultrasonic elliptical vibratory many oscillators device for transporting objects the most according to claim 1, it is characterised in that: described elliptical vibration modal transducer welding is arranged on the front end of front shroud.
4. encourage ultrasonic elliptical vibratory many oscillators device for transporting objects according to the list described in claim 1 or 2 or 3, it is characterised in that: described friction-driven block is arranged on the front end of elliptical vibration modal transducer by welding.
5. encourage ultrasonic elliptical vibratory many oscillators device for transporting objects according to the list described in claim 1 or 2 or 3, it is characterised in that: described friction-driven block passes through the bonding front end being arranged on elliptical vibration modal transducer.
6. encourage ultrasonic elliptical vibratory many oscillators device for transporting objects according to the list described in claim 1 or 2 or 3, it is characterised in that: also include 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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| CN201410740447.2A CN104410321B (en) | 2014-12-09 | 2014-12-09 | A kind of single excitation ultrasonic elliptical vibratory many oscillators device for transporting objects |
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| CN201410740447.2A CN104410321B (en) | 2014-12-09 | 2014-12-09 | A kind of single excitation ultrasonic elliptical vibratory many oscillators device for transporting objects |
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| CN104410321A CN104410321A (en) | 2015-03-11 |
| CN104410321B true CN104410321B (en) | 2016-08-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1848654A (en) * | 2006-05-17 | 2006-10-18 | 合肥工业大学 | Double-vibrating mode driving piezoelectric ceramic ultrasound wave electric machine small wave differential controlling method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3735623A1 (en) * | 1987-10-21 | 1989-05-03 | Philips Patentverwaltung | ELECTRIC ROTATIONAL OR LINEAR MOTOR WHOSE RUNNER IS DRIVEN BY MEANS OF ULTRASONIC VIBRATIONS |
| JP4345744B2 (en) * | 2003-01-14 | 2009-10-14 | シンフォニアテクノロジー株式会社 | Piezoelectric parts feeder |
| CN103414370B (en) * | 2013-08-26 | 2015-09-02 | 苏州科技学院 | Singly encourage linear ultrasonic motor |
| CN103401470B (en) * | 2013-08-26 | 2015-08-05 | 苏州科技学院 | Bi-directional drive linear ultrasonic motor |
| CN204271931U (en) * | 2014-12-09 | 2015-04-15 | 苏州科技学院 | A kind of single excitation ultrasonic elliptical vibratory many oscillators device for transporting objects |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1848654A (en) * | 2006-05-17 | 2006-10-18 | 合肥工业大学 | Double-vibrating mode driving piezoelectric ceramic ultrasound wave electric machine small wave differential controlling method |
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Inventor after: Yin Zhen Inventor after: Wu Lei Inventor after: Li Yan Inventor after: Li Hua Inventor after: Cao Ziyang Inventor after: Zhang Lei Inventor after: Liu Qinyun Inventor after: Xu Tie Inventor after: Yang Xinming Inventor after: Zhang Shuai Inventor before: Wu Yongzhi Inventor before: Yin Zhen Inventor before: Li Yan Inventor before: Liu Yisheng |
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