CN103795290A - Patch type longitudinal vibration composite single-foot piezoelectric ultrasonic motor oscillator - Google Patents
Patch type longitudinal vibration composite single-foot piezoelectric ultrasonic motor oscillator Download PDFInfo
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- CN103795290A CN103795290A CN201410040090.7A CN201410040090A CN103795290A CN 103795290 A CN103795290 A CN 103795290A CN 201410040090 A CN201410040090 A CN 201410040090A CN 103795290 A CN103795290 A CN 103795290A
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Abstract
贴片式纵振复合单足压电超声电机振子，涉及超声电机技术领域。本发明是为了解决现有T型直线超声电机振子中存在的加工装配较为复杂、难于实现微型化的问题。所述水平梁末端设有水平变幅杆，竖直梁末端设有竖直变幅杆，水平变幅杆和竖直变幅杆均为截面逐渐变细的块体，驱动足与两个水平变幅杆、竖直变幅杆的小端固定连接，两个水平梁和竖直梁按T型设置，两个水平梁的侧面均设有一个薄壁梁，每个薄壁梁外侧均设有一个法兰；水平梁、竖直梁的上下表面分别设有一片压电陶瓷片，所有压电陶瓷片均沿厚度方向极化，竖直梁上下表面的两片压电陶瓷片极化方向相反，每个水平梁上下表面的两片压电陶瓷片极化方向相反。它可用于超声电机方面。
The invention relates to a patch type longitudinal vibration composite single-leg piezoelectric ultrasonic motor vibrator, which relates to the technical field of ultrasonic motors. The invention aims to solve the problems of complicated processing and assembly and difficulty in miniaturization existing in the existing T-shaped linear ultrasonic motor vibrator. The end of the horizontal beam is provided with a horizontal horn, and the end of the vertical beam is provided with a vertical horn. Both the horizontal horn and the vertical horn are blocks with tapered cross-sections. The small end of the horn and the vertical horn is fixedly connected, and the two horizontal beams and the vertical beams are arranged in a T shape. There is a thin-walled beam on the side of the two horizontal beams, and a flange on the outside of each thin-walled beam. ; The upper and lower surfaces of the horizontal beam and the vertical beam are respectively provided with a piece of piezoelectric ceramics, and all the piezoelectric ceramics are polarized along the thickness direction, and the polarization directions of the two piezoelectric ceramics on the upper and lower surfaces of the vertical beam are opposite, each The polarization directions of the two piezoelectric ceramic sheets on the upper and lower surfaces of the horizontal beam are opposite. It can be used in ultrasonic motor aspects.
Description
Technical field
The present invention relates to the compound monopodia piezoelectric ultrasonic motor of a kind of SMD longitudinal vibration oscillator, belong to piezoelectric ultrasonic motor technical field.
Background technology
Piezoelectric ultrasonic motor is a kind of inverse piezoelectric effect of utilizing piezoelectric ceramic, in elastomer, motivate the vibration in supersonic range, form the particle movement with particular track at surface of elastomer specified point or specific region, and then friction coupling by between stator, rotor converts the microscopic motion of particle to the macroscopic motion of rotor, there is simple in structure, flexible design, low speed high torque/thrust, power/torque density is high, positioning precision is high, fast response time, cut off self-lock, without electromagnetic interference and be not subject to the advantages such as electromagnetic interference.
The fitting-type of current piezoelectric ultrasonic motor mostly is ultrasonic transformer and drives the T-shaped linear ultrasonic motor oscillator of foot composition, for example: publication number is: the T-shaped linear ultrasonic motor oscillator of mentioning in the application for a patent for invention of CN101630924A has solved the problem that the mechanical fan-out capability of ultrasound electric machine is restricted, however this motor oscillator also exist process and assemble comparatively complicated, be difficult to realize microminiaturized problem.
Summary of the invention
The present invention for solve the process and assemble that exists in existing T-shaped linear ultrasonic motor oscillator comparatively complicated, be difficult to realize microminiaturized problem, and the compound monopodia piezoelectric ultrasonic motor of SMD longitudinal vibration oscillator is proposed.
The compound monopodia piezoelectric ultrasonic motor of SMD longitudinal vibration oscillator, it comprises metallic matrix and six piezoelectric ceramic pieces,
Described metallic matrix comprises two horizontal beams, vertical beam, driving foot, two thin walled beams and two flanges,
Described horizontal beam end is provided with level luffing bar, vertical beam end is provided with vertical ultrasonic transformer, level luffing bar and vertically ultrasonic transformer are the tapered block in cross section, drive foot to be fixedly connected with the small end of two level luffing bars, vertical ultrasonic transformer, two horizontal beams and vertical beam are according to T-shaped setting, the side of two horizontal beams is provided with a thin walled beam, and each thin walled beam outside is all processed with a flange; The upper and lower surface of described horizontal beam, vertical beam is respectively arranged with a slice piezoelectric ceramic piece, the equal through-thickness polarization of all piezoelectric ceramic pieces.
The compound monopodia piezoelectric ultrasonic motor of SMD longitudinal vibration of the present invention oscillator utilizes the compound realization of the extensional vibration of horizontal beam and vertical beam to activate, and piezoelectric ceramic piece is arranged near the node of horizontal beam and vertical beam extensional vibration waveform; Oscillator when work proportion be that oscillator resonance frequency, phase difference are that the two-phase alternating current of 90 ° presses signal to carry out; Wherein four piezoelectric ceramic pieces on horizontal beam are one group, adopt in-phase voltage to encourage, and two piezoelectric ceramic pieces on vertical beam are one group, adopt an other phase voltage to encourage; The extensional vibration meeting of horizontal beam causes the vibration that drives sufficient horizontal direction, and referring to Fig. 5, the extensional vibration of vertical beam can cause the vibration that drives sufficient vertical direction, referring to Fig. 4; The stack meeting of two orthogonal extensional vibrations is in the motion that drives foot place to produce elliptical orbit, referring to Fig. 6, and then by driving friction coupling between foot and mover to realize the macroscopic motion output of mover.If adjusting the phase difference of two-phase pumping signal is-90 °, can realize reverse drive.Level luffing bar and vertically ultrasonic transformer all adopt variable cross-section design to play the effect of amassing wealth by heavy taxation of vibrational energy, can improve the amplitude and the vibration velocity that drive the surperficial particle of foot, and motor performance is improved.
The compound monopodia piezoelectric ultrasonic motor of SMD longitudinal vibration of the present invention oscillator adopts paster structure, simple in structure, this motor oscillator comprises metallic matrix and six piezoelectric ceramic pieces, process and assemble is very easy, this motor oscillator is lower to part processing precision requirement in addition, and is easy to realize microminiaturized and integrated.The present invention can be used for ultrasound electric machine aspect.
Accompanying drawing explanation
Fig. 1 be the compound monopodia piezoelectric ultrasonic motor of SMD longitudinal vibration of the present invention oscillator perspective view,
Fig. 2 is the perspective view of metallic matrix 1 in oscillator in Fig. 1,
Fig. 3 is the polarised direction schematic diagram of piezoelectric ceramic piece 2 in Fig. 1,
Fig. 4 is the formation figure of the vertical vibrating mode that in Fig. 1, oscillator when work is utilized,
Fig. 5 is the formation figure of the horizontal vibration mode that in Fig. 1, oscillator when work is utilized,
Fig. 6 is the schematic diagram that promotes mover motion when oscillator is worked in Fig. 1, and a represents the mover direction of motion, and b represents precompression, and c represents mover.
Embodiment
Embodiment one, in conjunction with Fig. 1 to Fig. 3, present embodiment is described, the compound monopodia piezoelectric ultrasonic motor of the SMD longitudinal vibration oscillator described in present embodiment, it comprises metallic matrix 1 and six piezoelectric ceramic pieces 2,
Described metallic matrix 1 comprises two horizontal beam 1-1, vertical beam 1-2, drives sufficient 1-3, two thin walled beam 1-4 and two flange 1-5,
Described horizontal beam 1-1 end is provided with level luffing bar 1-1-1, vertical beam 1-2 end is provided with vertical ultrasonic transformer 1-2-1, level luffing bar 1-1-1 and vertically ultrasonic transformer 1-2-1 are the tapered block in cross section, drive sufficient 1-3 to be fixedly connected with the small end of two level luffing bar 1-1-1, vertical ultrasonic transformer 1-2-1, two horizontal beam 1-1 and vertical beam 1-2 are according to T-shaped setting, the side of two horizontal beam 1-1 is provided with a thin walled beam 1-4, and each thin walled beam 1-4 outside is provided with a flange 1-5; The upper and lower surface of described horizontal beam 1-1, vertical beam 1-2 is respectively arranged with a slice piezoelectric ceramic piece 2, the equal through-thickness polarization of all piezoelectric ceramic pieces 2, two piezoelectric ceramic piece 2 polarised directions that vertical beam 1-2 upper and lower surface arranges are contrary, and two piezoelectric ceramic piece 2 polarised directions that each horizontal beam 1-1 upper and lower surface arranges are contrary.
The compound monopodia piezoelectric ultrasonic motor of the SMD longitudinal vibration oscillator of present embodiment is in application, metallic matrix 1 is connected with the common port of driving power, the outer surface and one of two upper four piezoelectric ceramic pieces 2 that arrange of horizontal beam 1-1 drives signal to be connected mutually, and the outer surface and other of the upper two fixing piezoelectric ceramic pieces 2 of vertical beam 1-2 drives signal to be connected mutually.
The difference of the compound monopodia piezoelectric ultrasonic motor of the SMD longitudinal vibration oscillator described in embodiment two, present embodiment and embodiment one is, is describedly integrated part by two horizontal beam 1-1, vertical beam 1-2, the metallic matrix 1 that drives sufficient 1-3, two thin walled beam 1-4 and two flange 1-5 to form.
In present embodiment, be integrated part by two horizontal beam 1-1, vertical beam 1-2, the metallic matrix 1 that drives sufficient 1-3, two thin walled beam 1-4 and two flange 1-5 to form, can simplify greatly like this ultrasonic motor oscillator manufacture craft; Thin walled beam 1-4, for realizing the effect of resiliency supported and vibration isolation, can drop to minimum on the impact of oscillator self vibration by oscillator and connecting of other member.
Claims (2)
1. the compound monopodia piezoelectric ultrasonic motor of SMD longitudinal vibration oscillator, is characterized in that, it comprises metallic matrix (1) and six piezoelectric ceramic pieces (2),
Described metallic matrix (1) comprises two horizontal beams (1-1), vertical beam (1-2), drives foot (1-3), two thin walled beams (1-4) and two flanges (1-5),
Described horizontal beam (1-1) end is provided with level luffing bar (1-1-1), vertical beam (1-2) end is provided with vertical ultrasonic transformer (1-2-1), level luffing bar (1-1-1) and vertically ultrasonic transformer (1-2-1) are the tapered block in cross section, drive foot (1-3) and two level luffing bars (1-1-1), vertically the small end of ultrasonic transformer (1-2-1) is fixedly connected with, two horizontal beams (1-1) and vertical beam (1-2) are according to T-shaped setting, the side of two horizontal beams (1-1) is provided with a thin walled beam (1-4), each thin walled beam (1-4) outside is provided with a flange (1-5), the upper and lower surface of described horizontal beam (1-1), vertical beam (1-2) is respectively arranged with a slice piezoelectric ceramic piece (2), all through-thickness polarization of all piezoelectric ceramic pieces (2), two piezoelectric ceramic pieces (2) polarised direction that vertical beam (1-2) upper and lower surface arranges is contrary, and two piezoelectric ceramic pieces (2) polarised direction that each horizontal beam (1-1) upper and lower surface arranges is contrary.
2. the compound monopodia piezoelectric ultrasonic motor of SMD longitudinal vibration according to claim 1 oscillator, it is characterized in that, the described metallic matrix (1) being made up of two horizontal beams (1-1), vertical beam (1-2), driving foot (1-3), two thin walled beams (1-4) and two flanges (1-5) is integrated part.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410040090.7A CN103795290A (en) | 2014-01-27 | 2014-01-27 | Patch type longitudinal vibration composite single-foot piezoelectric ultrasonic motor oscillator |
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| CN201410040090.7A CN103795290A (en) | 2014-01-27 | 2014-01-27 | Patch type longitudinal vibration composite single-foot piezoelectric ultrasonic motor oscillator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877733A (en) * | 2015-12-03 | 2017-06-20 | 精工爱普生株式会社 | Piezo drives, motors, robots, and pumps |
| CN107517022A (en) * | 2017-08-04 | 2017-12-26 | 上海交通大学 | A two-degree-of-freedom ultrasonic motor based on a combined stator with three piezoelectric transducers |
| CN109013259A (en) * | 2018-08-09 | 2018-12-18 | 中南大学 | A kind of Large Amplitude Vibration amplitude transformer for ultrasonic vibration at high speed secondary process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030178915A1 (en) * | 2002-03-22 | 2003-09-25 | Yoon Seok Jin | Linear piezoelectric ultrasonic motor |
| JP2008043123A (en) * | 2006-08-09 | 2008-02-21 | Olympus Corp | Ultrasonic motor and vibration detection method of ultrasonic motor |
| CN101630924A (en) * | 2009-08-25 | 2010-01-20 | 哈尔滨工业大学 | T-shaped linear ultrasonic motor oscillator |
| CN102437783A (en) * | 2011-12-22 | 2012-05-02 | 哈尔滨工业大学 | SMD type I-shaped quadruped linear ultrasonic motor vibrator |
-
2014
- 2014-01-27 CN CN201410040090.7A patent/CN103795290A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030178915A1 (en) * | 2002-03-22 | 2003-09-25 | Yoon Seok Jin | Linear piezoelectric ultrasonic motor |
| JP2008043123A (en) * | 2006-08-09 | 2008-02-21 | Olympus Corp | Ultrasonic motor and vibration detection method of ultrasonic motor |
| CN101630924A (en) * | 2009-08-25 | 2010-01-20 | 哈尔滨工业大学 | T-shaped linear ultrasonic motor oscillator |
| CN102437783A (en) * | 2011-12-22 | 2012-05-02 | 哈尔滨工业大学 | SMD type I-shaped quadruped linear ultrasonic motor vibrator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106877733A (en) * | 2015-12-03 | 2017-06-20 | 精工爱普生株式会社 | Piezo drives, motors, robots, and pumps |
| CN107517022A (en) * | 2017-08-04 | 2017-12-26 | 上海交通大学 | A two-degree-of-freedom ultrasonic motor based on a combined stator with three piezoelectric transducers |
| CN107517022B (en) * | 2017-08-04 | 2020-01-07 | 上海交通大学 | A two-degree-of-freedom ultrasonic motor based on a combined stator of three piezoelectric transducers |
| CN109013259A (en) * | 2018-08-09 | 2018-12-18 | 中南大学 | A kind of Large Amplitude Vibration amplitude transformer for ultrasonic vibration at high speed secondary process |
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