CN101262182A - Compound vibrator line ultrasonic electromotor - Google Patents
Compound vibrator line ultrasonic electromotor Download PDFInfo
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- CN101262182A CN101262182A CNA2008100274504A CN200810027450A CN101262182A CN 101262182 A CN101262182 A CN 101262182A CN A2008100274504 A CNA2008100274504 A CN A2008100274504A CN 200810027450 A CN200810027450 A CN 200810027450A CN 101262182 A CN101262182 A CN 101262182A
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Abstract
The invention discloses a linear ultrasonic motor with composite vibrators. The linear ultrasonic motor comprises a frame, a mover, a vibrator and a pre-fastening mechanism, wherein, a sliding base and a hub are fixed inside the frame, the mover is arranged and capable of moving on the sliding base, the vibrator is an elastic metal body taking the shape of a right angled isosceles triangle, shifting teeth which contact the mover are arranged at the right angle part, the front surface and the back surface of the two right-angle side parts are provided with four piezoelectric ceramic pieces and the bottom surface of the vibrator contacts the pre-fastening mechanism. The motor has easy design, simple structure, convenient installation, large push force, long stroke and high working efficiency; with the two prism-shaped composite vibrator and that the shifting teeth with micro-displacement amplification function contact the surface of the mover, and that the two longitudinal prism-shaped composite vibrators are combined into a longitudinal bending composite vibrator of the shifting teeth, the longitudinal bending composite vibrator drives the mover to do a macro movement, thereby obtaining large drive force, comparatively longer working stroke, comparatively higher working rate and comparatively higher disconnection and self-locking capacity.
Description
Technical field
The present invention relates to utilize the motor of piezoelectric effect, particularly a kind of composite vibrator linear supersonic motor.
Background technology
Ultrasound electric machine is the electrical micro-machine that utilizes piezoelectric ceramic inverse piezoelectric effect and ultrasonic vibration.It generally is made up of oscillator, mover (or rotor) and pre-tightening mechanism, and wherein oscillator is formed by piezoelectric ceramic or piezoelectric ceramic and metallic elastic bluk recombination usually.
In the present existing linear type ultrasound motor, complex vibration mode is indulged, bent to main the employing, vertical and beam frequency reaches unanimity, to produce the elliptical trajectory of surperficial particle, but ubiquity design process complexity, materials processing difficulty, the demanding problem of assembly precision, in fact be difficult to realize vertically and beam frequency consistent, make the performance (as actuating force, actuating speed etc.) of linear electric motors and the reliability of working reduces greatly, be difficult to realize industrial applications.The patent No. be " 200510122908.0 " disclosure of the Invention a kind of " linear motion stepping ultrasonic motor ", oscillator comprises two square metallic elastic bodies, the root of two shaker arms of each metallic elastic body posts piezoelectric ceramic respectively, is used for the excited vibration arm and produces longitudinal vibration; Mover is the bar shape that the lower surface has even calibration teeth groove, utilizes the spring force of flat spring to be pressed on the driving head of oscillator through the lower surface of bearing with mover.Longitudinal vibration by piezoelectric ceramic excited vibrational arm, the sinusoidal signal of utilizing phase difference 90 to spend encourages two shaker arms of same oscillator simultaneously, the synergy of these two shaker arm longitudinal vibrations makes driving head produce elliptic motion and promotes mover straight line step motion, constitutes linear ultrasonic motor.But utilize square metallic elastic body merely, the elliptical trajectory of its driving head is less, be difficult for to realize linear ultrasonic motor than high thrust and driving velocity faster, and motor working efficiency is not high.
Summary of the invention
The present invention provides a kind of simple in structure, the big stroke of high thrust, the composite vibrator linear supersonic motor of high efficiency in order to overcome the deficiency that above prior art exists.
Purpose of the present invention realizes by following technical scheme: this composite vibrator linear supersonic motor, it is characterized in that: comprise frame, mover, oscillator and pre-tightening mechanism, the frame internal fixation has slide and hub, mover movably is installed on the slide, oscillator is the metallic elastic body of right angled isosceles triangle, and the place, right angle is provided with moving tooth, and moving tooth contacts with mover, the front and rear surfaces at two right-angle side positions is provided with four piezoelectric ceramic pieces, and the bottom surface of oscillator contacts with pre-tightening mechanism.
Two right-angle side positions of described oscillator are prism, and the top of two right-angle sides is flat pyramid, and flat pyramid and moving tooth combine as a whole.
Described mover is the line slide rail that front and rear surfaces has gathering sill, and gathering sill cooperates with slide.
Described pre-tightening mechanism comprises pretension screw and leaf spring, and the bottom surface of oscillator contacts with leaf spring, and the pretension screw is installed on the lower cover of frame and contacts with leaf spring.
The front and rear surfaces symmetry at described two right-angle side positions is pasted with the piezoelectric ceramic piece of four rectangles, the inside and outside surface of piezoelectric ceramic piece all scribbles the electrode for polarization and excitation usefulness, piezoelectric ceramic piece polarizes along thickness direction, outer surface is the initial surface of polarization, inner surface is the terminal surface of polarization, and inner surface is pasted on the surface at right-angle side position.
Described electrode is silver-plated electrode.
The outer surface of two piezoelectric ceramic pieces at a described right-angle side position connects sin ω t pumping signal line, and the outer surface of two piezoelectric ceramic pieces at another right-angle side position connects cos ω t pumping signal line, and four inner surfaces connect common ground.
Two side plates of described frame are provided with mounting groove, and oscillator is positioned in two mounting grooves.
The operation principle of composite vibrator linear supersonic motor of the present invention is as follows:
Utilize the d31 effect of piezoelectric ceramic piece, oscillator is the same frequency that motivates the prism at composite oscillator two right-angle side positions under the 90 alternating current effects of spending respectively at phase difference, phase difference is the vertical complex vibration (prism stretching of 90 degree, another prism compression), vertical complex vibration has the vertical curved complex vibration of moving tooth place generation that micrometric displacement amplifies, form the track of elliptic motion at moving tooth microcosmic particle place, cause the strain of leaf spring by the feeding depth that changes the pretension screw, adjust the pretightning force that contacts of oscillator and mover, and then make mover under the effect of contact pretightning force, rely on frictional drive to produce required rectilinear motion.
The present invention has following advantage with respect to prior art:
One, design easily: be easy to inspire simultaneously two prisms with frequency, homotype mode of oscillation, make that the electric machine structure design is more or less freely;
Two, high thrust, big stroke, high efficiency: the composite oscillator by two prisms adds that the moving tooth with micrometric displacement amplification contacts with the mover surface, the indulging of the synthetic moving tooth of composite oscillator longitudinally of two prisms bent complex vibration, the macroscopic view that vertical curved complex vibration drives mover moves, and can obtain bigger actuating force, long impulse stroke, higher operating rate and the bigger power that cuts off self-lock;
Three, simple in structure, be convenient to install: paste the rectangular piezoelectric ceramic sheet in prism surface symmetry and be easy to realize, electric machine structure is simple, motor is easy to assembly, reliable operation, directly realize the rectilinear motion of mover, forward and reverse motion is switched flexibly, performance is consistent, can be widely used in machine tool feeding mechanism and other linear motion device than high thrust or longer stroke.
Description of drawings
Fig. 1 is the structural representation of a kind of composite vibrator linear supersonic motor of the present invention.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is the enlarged drawing of the oscillator of Fig. 2.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Composite vibrator linear supersonic motor as shown in Figure 1 and Figure 2, comprise frame 1, mover 2, oscillator 3, pretension screw 4 and leaf spring 5, frame 1 internal fixation has slide 6 and hub 7, mover 2 movably is installed on the slide 6, mover 2 has the line slide rail of gathering sill 20 for front and rear surfaces, and gathering sill 20 cooperates with slide 6.Oscillator 3 is the metallic elastic body of right angled isosceles triangle, the place, right angle is provided with moving tooth 30, and moving tooth 30 contacts with mover 2, and the front and rear surfaces at two right-angle side positions is provided with four piezoelectric ceramic pieces 8, the bottom surface of oscillator 3 contacts with leaf spring 5, and pretension screw 4 is installed on the lower cover 9 of frame 1 and contacts with leaf spring 5.
Two side plates of frame 1 are provided with mounting groove 10, and oscillator 3 is positioned in two mounting grooves 10.Two right-angle side positions of oscillator 3 are prism, and the top of two right-angle sides is flat pyramid 31, and flat pyramid 31 combines as a whole with moving tooth 30.The front and rear surfaces symmetry at two right-angle side positions is pasted with the piezoelectric ceramic piece 8 of four rectangles, the inner surface 80 of piezoelectric ceramic piece 8, outer surface 81 (as shown in Figure 3) all scribble the silver-plated electrode for polarization and excitation usefulness, piezoelectric ceramic piece 8 polarizes along thickness direction, outer surface 81 is the initial surface of polarization, inner surface 80 is the terminal surface of polarization, and inner surface 80 is pasted on the surface at right-angle side position.The outer surface 81 of two piezoelectric ceramic pieces 8 at one right-angle side position connects sin ω t pumping signal line 82, and the outer surface 81 of two piezoelectric ceramic pieces 8 at another right-angle side position connects 83, four inner surfaces of cos ω t pumping signal line 80 and connects common ground 84.
The installation process of this motor:
Above-mentioned embodiment is the preferred embodiments of the present invention; can not limit claim of the present invention; other any change or other equivalent substitute mode that does not deviate from technical scheme of the present invention and made is included within protection scope of the present invention.
Claims (8)
1, composite vibrator linear supersonic motor, it is characterized in that: comprise frame, mover, oscillator and pre-tightening mechanism, the frame internal fixation has slide and hub, mover movably is installed on the slide, oscillator is the metallic elastic body of right angled isosceles triangle, and the place, right angle is provided with moving tooth, and moving tooth contacts with mover, the front and rear surfaces at two right-angle side positions is provided with four piezoelectric ceramic pieces, and the bottom surface of oscillator contacts with pre-tightening mechanism.
2, composite vibrator linear supersonic motor according to claim 1 is characterized in that: two right-angle side positions of described oscillator are prism, and the top of two right-angle sides is flat pyramid, and flat pyramid and moving tooth combine as a whole.
3, composite vibrator linear supersonic motor according to claim 1 is characterized in that: described mover is the line slide rail that front and rear surfaces has gathering sill, and gathering sill cooperates with slide.
4, composite vibrator linear supersonic motor according to claim 1 is characterized in that: described pre-tightening mechanism comprises pretension screw and leaf spring, and the bottom surface of oscillator contacts with leaf spring, and the pretension screw is installed on the lower cover of frame and contacts with leaf spring.
5, composite vibrator linear supersonic motor according to claim 1, it is characterized in that: the front and rear surfaces symmetry at described two right-angle side positions is pasted with the piezoelectric ceramic piece of four rectangles, the inside and outside surface of piezoelectric ceramic piece all scribbles the electrode for polarization and excitation usefulness, piezoelectric ceramic piece polarizes along thickness direction, outer surface is the initial surface of polarization, inner surface is the terminal surface of polarization, and inner surface is pasted on the surface at right-angle side position.
6, composite vibrator linear supersonic motor according to claim 5 is characterized in that: described electrode is silver-plated electrode.
7, composite vibrator linear supersonic motor according to claim 5, it is characterized in that: the outer surface of two piezoelectric ceramic pieces at a described right-angle side position connects sin ω t pumping signal line, the outer surface of two piezoelectric ceramic pieces at another right-angle side position connects cos ω t pumping signal line, and four inner surfaces connect common ground.
8, composite vibrator linear supersonic motor according to claim 1 is characterized in that: two side plates of described frame are provided with mounting groove, and oscillator is positioned in two mounting grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100274504A CN101262182A (en) | 2008-04-15 | 2008-04-15 | Compound vibrator line ultrasonic electromotor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100274504A CN101262182A (en) | 2008-04-15 | 2008-04-15 | Compound vibrator line ultrasonic electromotor |
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| CN101262182A true CN101262182A (en) | 2008-09-10 |
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| CNA2008100274504A Pending CN101262182A (en) | 2008-04-15 | 2008-04-15 | Compound vibrator line ultrasonic electromotor |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102237818A (en) * | 2011-06-29 | 2011-11-09 | 南京航空航天大学 | Tower-like ultrasonic motor with asymmetrical structure and asymmetrical modes thereof as well as electric excitation mode of asymmetrical modes |
| CN101697460B (en) * | 2009-10-28 | 2011-11-30 | 南京航空航天大学 | Two-way single-mode ramp type tower-shaped linear ultrasonic motor and electric excitation method |
| CN101694974B (en) * | 2009-10-16 | 2012-03-07 | 南京航空航天大学 | Tower-shaped linear ultrasonic motor and electric excitation mode |
| CN105515439A (en) * | 2016-01-08 | 2016-04-20 | 苏州市职业大学 | Laminated piezoelectric ceramic linear ultrasonic motor |
| CN105515438A (en) * | 2016-01-08 | 2016-04-20 | 苏州市职业大学 | Laminated piezoelectric ceramic linear ultrasonic motor |
| CN105973985A (en) * | 2016-06-24 | 2016-09-28 | 中冶建筑研究总院有限公司 | Ultrasonic probe for nonmetallic material defect detection |
| CN106793287A (en) * | 2016-12-15 | 2017-05-31 | 电子科技大学 | A kind of LED illumination circuit generated electricity based on human pressure |
| CN108306546A (en) * | 2018-03-04 | 2018-07-20 | 长春工业大学 | Compact dual actuation component piezoelectricity stick-slip Drive And Its Driving Method |
| CN110752768A (en) * | 2019-04-08 | 2020-02-04 | 浙江师范大学 | Piezoelectric precision driving device based on asymmetric triangular arc type flexible hinge mechanism |
| CN110855179A (en) * | 2019-04-08 | 2020-02-28 | 浙江师范大学 | Crawling type piezoelectric precision driving device based on asymmetric triangular flexible hinge mechanism |
| CN112542959A (en) * | 2020-11-25 | 2021-03-23 | 上海工程技术大学 | Single-phase excitation bidirectional movement miniature ultrasonic motor and method |
| CN113938051A (en) * | 2021-09-29 | 2022-01-14 | 东北电力大学 | Two-parallel bending vibrator composite actuation stepping piezoelectric driver and working method thereof |
-
2008
- 2008-04-15 CN CNA2008100274504A patent/CN101262182A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694974B (en) * | 2009-10-16 | 2012-03-07 | 南京航空航天大学 | Tower-shaped linear ultrasonic motor and electric excitation mode |
| CN101697460B (en) * | 2009-10-28 | 2011-11-30 | 南京航空航天大学 | Two-way single-mode ramp type tower-shaped linear ultrasonic motor and electric excitation method |
| CN102237818A (en) * | 2011-06-29 | 2011-11-09 | 南京航空航天大学 | Tower-like ultrasonic motor with asymmetrical structure and asymmetrical modes thereof as well as electric excitation mode of asymmetrical modes |
| CN102237818B (en) * | 2011-06-29 | 2013-07-03 | 南京航空航天大学 | Tower-like ultrasonic motor with asymmetrical structure and asymmetrical modes thereof as well as electric excitation mode of asymmetrical modes |
| CN105515439A (en) * | 2016-01-08 | 2016-04-20 | 苏州市职业大学 | Laminated piezoelectric ceramic linear ultrasonic motor |
| CN105515438A (en) * | 2016-01-08 | 2016-04-20 | 苏州市职业大学 | Laminated piezoelectric ceramic linear ultrasonic motor |
| CN105973985A (en) * | 2016-06-24 | 2016-09-28 | 中冶建筑研究总院有限公司 | Ultrasonic probe for nonmetallic material defect detection |
| CN106793287A (en) * | 2016-12-15 | 2017-05-31 | 电子科技大学 | A kind of LED illumination circuit generated electricity based on human pressure |
| CN108306546A (en) * | 2018-03-04 | 2018-07-20 | 长春工业大学 | Compact dual actuation component piezoelectricity stick-slip Drive And Its Driving Method |
| CN110752768A (en) * | 2019-04-08 | 2020-02-04 | 浙江师范大学 | Piezoelectric precision driving device based on asymmetric triangular arc type flexible hinge mechanism |
| CN110855179A (en) * | 2019-04-08 | 2020-02-28 | 浙江师范大学 | Crawling type piezoelectric precision driving device based on asymmetric triangular flexible hinge mechanism |
| CN112542959A (en) * | 2020-11-25 | 2021-03-23 | 上海工程技术大学 | Single-phase excitation bidirectional movement miniature ultrasonic motor and method |
| CN113938051A (en) * | 2021-09-29 | 2022-01-14 | 东北电力大学 | Two-parallel bending vibrator composite actuation stepping piezoelectric driver and working method thereof |
| CN113938051B (en) * | 2021-09-29 | 2023-09-29 | 东北电力大学 | Two-parallel bending vibrator compound actuation stepping piezoelectric driver and working method thereof |
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Open date: 20080910 |