CN204349834U - A kind of plate-like ultrasound electric machine with two degrees of freedom - Google Patents
A kind of plate-like ultrasound electric machine with two degrees of freedom Download PDFInfo
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- CN204349834U CN204349834U CN201420727304.3U CN201420727304U CN204349834U CN 204349834 U CN204349834 U CN 204349834U CN 201420727304 U CN201420727304 U CN 201420727304U CN 204349834 U CN204349834 U CN 204349834U
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- precompression
- plate
- guide rail
- electric machine
- motor oscillator
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- 238000002604 ultrasonography Methods 0.000 title claims abstract description 29
- 230000000694 effects Effects 0.000 claims abstract description 18
- 239000000919 ceramic Substances 0.000 claims description 42
- 239000011159 matrix material Substances 0.000 claims description 26
- 230000005284 excitation Effects 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000005483 Hooke's law Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010358 mechanical oscillation Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The utility model discloses a kind of plate-like ultrasound electric machine with two degrees of freedom, comprises upper mounting plate, friction plate, guide rail fixed plate, lower shoe and motor oscillator and precompression bringing device thereof; This ultrasound electric machine also comprises Y-direction cross roller guide rail and X-direction cross roller guide rail; Described guide rail fixed plate is connected by Y-direction cross roller guide rail with upper mounting plate, realizes Y-direction guide effect; Described guide rail fixed plate is connected by X-direction cross roller guide rail with lower shoe, realizes X-direction guide effect; The upper end of described motor oscillator and precompression bringing device thereof is provided with friction plate, withstands on friction plate by precompression; Described friction plate is bonded on upper mounting plate.By applying different pumping signals, plate-like ultrasound electric machine with two degrees of freedom oscillator can drive platform to move on an x-y plane.The utility model achieves the accurate location of single ultrasound electric machine on two degrees of freedom workbench and uses.
Description
Technical field
The utility model relates to the utility model and relates to a kind of plate-like ultrasound electric machine with two degrees of freedom, belongs to Precision Piezoelectric actuation technology field.
Background technology
Ultrasound electric machine utilizes the inverse piezoelectric effect of piezoelectric to convert electrical energy into mechanical energy.The elastic composites of the given shape that the stator of usual ultrasound electric machine is made up of piezoelectric ceramic and metal elastic gonosome.Piezoelectric ceramic adopts the AC signal of supersonic frequency to encourage, and then in stator elastomeric, motivate the mechanical oscillation of same frequency, and stator output end face particle amplitude can reach several microns to tens microns even tens microns.The particle be superimposed upon on stator output end face by vibration mode produces the movement locus needed, and is generally elliptical orbit.Rotor (or mover) applies village by precompression and is pressed on stator, and by friction coupling, the macroscopic motion that the microcosmic elliptic motion on stator is converted into rotor (or mover) exports.
Ultrasound electric machine flexible structure is various, develop into and occurred now hundred kinds of dissimilar prototypes and product, forms of motion according to mover divides, and can be divided into single-degree-of-freedom electric rotating machine, single-degree-of-freedom linear electric motors, rotate freely motor and how free linear electric motors more.Current multivariant linear motor is studied less at present, be 200710134000.0 " a kind of ultrasound electric machine with two degrees of freedom " mentioned by retrieval request number, just mainly realize both direction, counter motion, compared with this motor, the motor oscillator part of a kind of plate-like ultrasound electric machine with two degrees of freedom that the utility model is mentioned is thinner, be easier to miniaturization, and only use monolithic piezoelectric ceramic sheet to excite second order to bend the vibration shape, just realize both direction, counter motion, use scale grating and grating reading head to realize position feedback simultaneously, pass through closed-loop control, improve the control precision of motor, be easier to apply in precise hard_drawn tuhes field.
Utility model content
Technical problem to be solved:
The utility model is intended to develop that a kind of volume is little, structure simple, be easy to realization, fast response time, single stator structure ultrasound electric machine with two degrees of freedom that can be applied in precise hard_drawn tuhes field.
Technical scheme:
In order to realize above function, the utility model provides a kind of plate-like ultrasound electric machine with two degrees of freedom, comprises upper mounting plate 3, friction plate 5, guide rail fixed plate 6, lower shoe 7 and motor oscillator and precompression bringing device 8 thereof;
Be provided with guide rail fixed plate 6 between described upper mounting plate 3 and lower shoe 7, the centre position of guide rail fixed plate 6 is a chamber, and described ultrasonic motor oscillator and precompression bringing device 8 thereof are an entirety, are arranged in this chamber, and are arranged on lower shoe 7;
It is characterized in that: this ultrasound electric machine also comprises Y-direction cross roller guide rail 4 and X-direction cross roller guide rail 9; Described guide rail fixed plate 6 is connected by Y-direction cross roller guide rail 4 with upper mounting plate 3, realizes Y-direction guide effect; Described guide rail fixed plate 6 is connected by X-direction cross roller guide rail 9 with lower shoe 7, realizes X-direction guide effect; The upper end of described motor oscillator and precompression bringing device 8 thereof is provided with friction plate 5, withstands on friction plate 5 by precompression; Described friction plate 5 is bonded on upper mounting plate 3.
Further, described motor oscillator and precompression bringing device 8 thereof comprise motor oscillator matrix 10, piezoelectric ceramic piece 11, hold-down nut 12, precompression plate 13, guide pillar 14, base 15, precompression nut 16, precompression post 17, precompression spring 18 and Ceramic Balls 19; The center of described motor oscillator matrix 10 upper surface is provided with a cylindrical boss, fluted on boss, places a Ceramic Balls 9 in groove; Described piezoelectric ceramic piece 11 is bonded on motor oscillator matrix 10, and both deads in line;
Described guide pillar 14 top is less than lower outer diameter, and its top is threadedly connected with motor oscillator matrix 10 through the edge of motor oscillator matrix 10; Matched in clearance between guide pillar 14 and precompression plate 13, its top is fixed together by hold-down nut 12 and precompression plate 13, and is interference fits between the bottom of guide pillar 14 and base 15;
Described precompression post 17 is threadedly connected with between base 15, and bottom is provided with precompression nut 16, and and is linked together by precompression spring 18 between precompression plate 13.
Further, described piezoelectric ceramic piece 11 is an entirety, and is bonded on motor oscillator matrix 10, and its exposed surface is evenly divided into four independent electrode zones, and in each electrode zone, polarised direction is identical, and polarised direction is piezoelectric ceramic piece 11 axis direction.
Described Ceramic Balls 19 is bonded on motor oscillator matrix 10, and when two electrode zones applying phase differences that piezoelectric ceramic piece 11 is relative are the sinusoidal excitation signal of 90 °, Ceramic Balls 19 produces the elliptic motion of respective direction; When Ceramic Balls 19 produces elliptic motion in X direction, by the guide effect of X-direction cross roller guide rail 9, promote upper mounting plate 3 and move in X direction; When Ceramic Balls 19 produces the elliptic motion along Y-direction, by the guide effect of Y-direction right-angled intersection guide rail 4, promotion upper mounting plate 3 produces and moves along Y-direction.
Preferred as one, between described upper mounting plate 3 and guide rail fixed plate 6, be provided with scale grating 1 and grating reading head 2, for position feedback; Described scale grating 1 is bonded on upper mounting plate 3; Described grating reading head 2 is fixed in guide rail fixed plate 6; Grating reading head 2 can move on scale grating 1 length direction, when motor movement, provides position feedback.
Further, precompression is transmitted by precompression spring 18 between described precompression post 17 and motor oscillator matrix 10; Owing to being interference fits between guide pillar 14 and base 15, for being threaded between base 15 with precompression post 17, by rotating the precompression nut 16 on precompression post 17, change the distance between precompression post 17 and motor oscillator matrix 10, and change the decrement of compression precompression spring 18, and then change the size of precompression.
Beneficial effect:
The utility model achieves by using a kind of plate-like ultrasound electric machine with two degrees of freedom:
1. the forward and reverse motion by using single stator structure to realize the both direction of motor, compact conformation, is more easy to miniaturized, makes motor have more wide application space;
2. by monolithic piezoelectric ceramic sheet identical for polarised direction is divided into four homogeneous electrode regions, second order is utilized to bend the vibration shape, obtain the elliptic motion of driving head, avoid the problem requiring polarised direction different in single ceramic sheet, motor is reduced greatly for the requirement of piezoelectric ceramic piece;
3. by motor oscillator and precompression bringing device thereof, utilize precompression spring to realize the adjustment of precompression, ensure, between motor stator and mover, there is certain precompression;
4. utilize scale grating and grating reading head, realize the position feedback of motor, by the closed-loop control of motor, be more beneficial to the accurate location of motor, make motor have wide application space in precision positioning field.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated:
Fig. 1 is a kind of plate-like ultrasound electric machine with two degrees of freedom structural representation;
Fig. 2 is motor oscillator and precompression bringing device structural representation thereof;
Fig. 3 is piezoelectric ceramic piece electrode zone segmentation schematic diagram;
Fig. 4 is a kind of plate-like ultrasound electric machine with two degrees of freedom structural representation;
Fig. 5 is a kind of plate-like ultrasound electric machine with two degrees of freedom end view;
Fig. 6 is a kind of plate-like ultrasound electric machine with two degrees of freedom upward view.
In figure: 1-scale grating, 2-grating reading head, 3-upper mounting plate, 4-Y direction cross roller guide rail, 5-friction plate, 6-guide rail fixed plate, 7-lower shoe, 8-motor oscillator and precompression bringing device thereof, 9-X direction cross roller guide rail, 10-motor oscillator matrix, 11-piezoelectric ceramic piece, 12-hold-down nut, 13-precompression plate, 14-guide pillar, 15-base, 16-precompression nut, 17-precompression post, 18-precompression spring, 19-Ceramic Balls.
Embodiment
The plate-like ultrasound electric machine with two degrees of freedom that the utility model provides, for making the purpose of this utility model, technical scheme and effect clearly, clearly, and further describe the utility model with reference to accompanying drawing examples.Should be appreciated that concrete enforcement described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Embodiment 1
As shown in Figure 1, ultrasound electric machine with two degrees of freedom of the present utility model is made up of upper mounting plate 3, Y-direction cross roller guide rail 4, friction plate 5, guide rail fixed plate 6, lower shoe 7 and motor oscillator and precompression bringing device 8 thereof; Described motor oscillator and precompression bringing device 8 thereof are fixed by screws on lower shoe 7, are withstood on friction plate 5 by precompression, and friction plate 5 is bonded on upper mounting plate 3; Be connected with Y-direction cross roller guide rail 4 between upper mounting plate 3 and guide rail fixed plate 6, when motor produces Y-direction actuating force, realized the Y-direction guiding movement of motor by Y-direction cross roller guide rail 4; Be connected with X-direction cross roller guide rail 9 between lower shoe 7 and guide rail fixed plate 6, when motor produces X-direction actuating force, realized the X-direction guiding movement of motor by X-direction cross roller guide rail 9.
As shown in Figure 2, motor oscillator and precompression bringing device 8 thereof by, motor oscillator matrix 10, piezoelectric ceramic piece 11, hold-down nut 12, precompression plate 13, guide pillar 14, base 15, precompression nut 16, precompression post 17, precompression spring 18, Ceramic Balls 19 form; Be bonded with Ceramic Balls 19 in groove on described motor oscillator matrix 10 boss, its bottom surface is bonded with piezoelectric ceramic piece 11, the axis of piezoelectric ceramic piece 11 and the dead in line of motor oscillator matrix 10; Described guide pillar 14 is a multidiameter, be threaded connection between its top and motor oscillator matrix 10, and by hold-down nut 12, precompression plate 13 is fixed together, it is matched in clearance between guide pillar 14 and precompression plate 13, be interference fits between guide pillar 14 and base 15, guide pillar 14 is uniformly distributed along base 15 circumferencial direction by 120 ° of intervals; Transmit precompression by precompression spring 18 between described precompression post 17 and precompression plate 18, precompression post 17 bottom is provided with precompression nut 16, and and is threaded connection between base 15.
As shown in Figure 2, when described precompression nut 16 is rotated by external force, due to the Movement transmit effect be threaded, precompression post 17 is made to produce rectilinear motion, cause precompression post 17 to change with the spacing of pressure plare 13, and then make precompression spring 18 produce distortion, according to Hooke's law, what the precompression that precompression spring 18 produces and precompression spring 18 produced is deformed into direct ratio, just can be obtained the size of applied precompression by this deflection; Described guide pillar 14 mainly plays guide effect in precompression applying process.
As shown in Figure 3, the polarised direction of described piezoelectric ceramic piece 11 is normal orientation, its surface uniform is divided into four electrode zones, and two wherein relative electrode zones are one group, and piezoelectric ceramic piece 11 is bonded on motor oscillator matrix 10 by installation direction and direction of motion angle mode at 45 °.
As shown in Figure 3, when to apply phase difference in piezoelectric ceramic piece 11 between electrode zone 1 and electrode zone 3 be the high-frequency and high-voltage sinusoidal excitation signal of 90 °, the Ceramic Balls 19 be bonded on motor oscillator matrix 10 can produce the elliptic motion in xoz plane, under the effect of precompression, X-direction actuating force is produced to the friction plate 5 be bonded on upper mounting plate 3, under the guide effect of X-direction cross roller guide rail 9, motor moves in X direction; When to apply phase difference between electrode zone 1 and electrode zone 3 be the high-frequency and high-voltage sinusoidal excitation signal of-90 °, motor is by counter motion in the X direction.
As shown in Figure 3, when to apply phase difference in piezoelectric ceramic piece 11 between electrode zone 2 and electrode zone 4 be the high-frequency and high-voltage sinusoidal excitation signal of 90 °, the Ceramic Balls 19 be bonded on motor oscillator matrix 10 can produce the elliptic motion in yoz plane, under the effect of precompression, Y-direction actuating force is produced to the friction plate 5 be bonded on upper mounting plate 3, under the guide effect of cross roller guide rail 4 in the Y direction, motor moves along Y-direction; When to apply phase difference between electrode zone 2 and electrode zone 4 be the high-frequency and high-voltage sinusoidal excitation signal of-90 °, motor is by counter motion in the Y direction.
Embodiment 2
As shown in Fig. 4, Fig. 5, Fig. 6, the difference of the present embodiment and embodiment 1 is, present embodiment also comprises scale grating 1, grating reading head 2; Described scale grating 1 is bonded on upper mounting plate 3, and its installation direction is identical with the Y direction of motion, and grating reading head 2 is fixed in guide rail fixed plate 6, when motor movement, grating reading head 2 moves along scale grating 1, obtains current motor positions information, for realizing the closed-loop control of motor.
Be understandable that; for those of ordinary skills; can be equal to according to the technical solution of the utility model and utility model design thereof and replace or change, and all these change or replace the protection range that all should belong to the claim appended by the utility model.
Claims (6)
1. a plate-like ultrasound electric machine with two degrees of freedom, comprises upper mounting plate (3), friction plate (5), guide rail fixed plate (6), lower shoe (7) and motor oscillator and precompression bringing device (8) thereof;
Guide rail fixed plate (6) is provided with between described upper mounting plate (3) and lower shoe (7), the centre position of guide rail fixed plate (6) is a chamber, described ultrasonic motor oscillator and precompression bringing device (8) thereof are an entirety, are arranged in this chamber, and are arranged on lower shoe (7);
It is characterized in that: this ultrasound electric machine also comprises Y-direction cross roller guide rail (4) and X-direction cross roller guide rail (9); Described guide rail fixed plate (6) is connected by Y-direction cross roller guide rail (4) with upper mounting plate (3), realizes Y-direction guide effect; Described guide rail fixed plate (6) is connected by X-direction cross roller guide rail (9) with lower shoe (7), realizes X-direction guide effect; The upper end of described motor oscillator and precompression bringing device (8) thereof is provided with friction plate (5), withstands on friction plate (5) by precompression; Described friction plate (5) is bonded on upper mounting plate (3).
2. a kind of plate-like ultrasound electric machine with two degrees of freedom according to claim 1, is characterized in that: described motor oscillator and precompression bringing device (8) thereof comprise motor oscillator matrix (10), piezoelectric ceramic piece (11), hold-down nut (12), precompression plate (13), guide pillar (14), base (15), precompression nut (16), precompression post (17), precompression spring (18) and Ceramic Balls (19); The center of described motor oscillator matrix (10) upper surface is provided with a cylindrical boss, fluted on boss, places a Ceramic Balls (9) in groove; Described piezoelectric ceramic piece (11) is bonded on motor oscillator matrix (10), and both deads in line;
Described guide pillar (14) top is less than lower outer diameter, and its top is threadedly connected with motor oscillator matrix (10) through the edge of motor oscillator matrix (10); Matched in clearance between guide pillar (14) and precompression plate (13), its top is fixed together by hold-down nut (12) and precompression plate (13), and is interference fits between the bottom of guide pillar (14) and base (15);
Described precompression post (17) is threadedly connected with between base (15), and bottom is provided with precompression nut (16), and and is linked together by precompression spring (18) between precompression plate (13).
3. a kind of plate-like ultrasound electric machine with two degrees of freedom according to claim 2, it is characterized in that: described piezoelectric ceramic piece (11) is an entirety, and be bonded on motor oscillator matrix (10), its exposed surface is evenly divided into four independent electrode zones, in each electrode zone, polarised direction is identical, and polarised direction is piezoelectric ceramic piece (11) axis direction.
4. a kind of plate-like ultrasound electric machine with two degrees of freedom according to claim 3, it is characterized in that: described Ceramic Balls (19) is bonded on motor oscillator matrix (10), when two electrode zones applying phase differences that piezoelectric ceramic piece (11) is relative are the sinusoidal excitation signal of 90 °, Ceramic Balls (19) produces the elliptic motion of respective direction; When Ceramic Balls (19) produces elliptic motion in X direction, by the guide effect of X-direction cross roller guide rail (9), promote upper mounting plate (3) and move in X direction; When Ceramic Balls (19) produces the elliptic motion along Y-direction, by the guide effect of Y-direction right-angled intersection guide rail (4), promote upper mounting plate (3) generation and move along Y-direction.
5. any one plate-like ultrasound electric machine with two degrees of freedom according to Claims 1-4, is characterized in that: between described upper mounting plate (3) and guide rail fixed plate (6), be provided with scale grating (1) and grating reading head (2), for position feedback; Described scale grating (1) is bonded on upper mounting plate (3); Described grating reading head (2) is fixed in guide rail fixed plate (6); Grating reading head (2) can move on scale grating (1) length direction, when motor movement, provides position feedback.
6. according to any one plate-like ultrasound electric machine with two degrees of freedom described in claim 2 to 4, it is characterized in that: between described precompression post (17) and motor oscillator matrix (10), transmit precompression by precompression spring (18); Owing to being interference fits between guide pillar (14) and base (15), for being threaded between base (15) with precompression post (17), by rotating the precompression nut (16) on precompression post (17), change the distance between precompression post (17) and motor oscillator matrix (10), and change the decrement of compression precompression spring (18), and then change the size of precompression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420727304.3U CN204349834U (en) | 2014-11-28 | 2014-11-28 | A kind of plate-like ultrasound electric machine with two degrees of freedom |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420727304.3U CN204349834U (en) | 2014-11-28 | 2014-11-28 | A kind of plate-like ultrasound electric machine with two degrees of freedom |
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| CN204349834U true CN204349834U (en) | 2015-05-20 |
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| CN201420727304.3U Expired - Fee Related CN204349834U (en) | 2014-11-28 | 2014-11-28 | A kind of plate-like ultrasound electric machine with two degrees of freedom |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104506076A (en) * | 2014-11-28 | 2015-04-08 | 南京航空航天大学 | Disc-shaped two-degree-of-freedom ultrasonic motor |
| CN106224394A (en) * | 2016-09-06 | 2016-12-14 | 沃德传动（天津）股份有限公司 | A kind of bearing assembly and the pre-tightening apparatus of bearing |
| CN109031123A (en) * | 2018-09-18 | 2018-12-18 | 江苏大学 | A kind of linear type small and special electric machine performance automatic test system |
| CN111969886A (en) * | 2020-08-10 | 2020-11-20 | 四川航天系统工程研究所 | Planar two-degree-of-freedom ultrasonic motor structure |
-
2014
- 2014-11-28 CN CN201420727304.3U patent/CN204349834U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104506076A (en) * | 2014-11-28 | 2015-04-08 | 南京航空航天大学 | Disc-shaped two-degree-of-freedom ultrasonic motor |
| CN106224394A (en) * | 2016-09-06 | 2016-12-14 | 沃德传动（天津）股份有限公司 | A kind of bearing assembly and the pre-tightening apparatus of bearing |
| CN109031123A (en) * | 2018-09-18 | 2018-12-18 | 江苏大学 | A kind of linear type small and special electric machine performance automatic test system |
| CN111969886A (en) * | 2020-08-10 | 2020-11-20 | 四川航天系统工程研究所 | Planar two-degree-of-freedom ultrasonic motor structure |
| CN111969886B (en) * | 2020-08-10 | 2021-06-29 | 四川航天系统工程研究所 | Planar two-degree-of-freedom ultrasonic motor structure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20161128 |