CN200987127Y - K-shaped straight line ultrasonic motor - Google Patents
K-shaped straight line ultrasonic motor Download PDFInfo
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- CN200987127Y CN200987127Y CN 200620126630 CN200620126630U CN200987127Y CN 200987127 Y CN200987127 Y CN 200987127Y CN 200620126630 CN200620126630 CN 200620126630 CN 200620126630 U CN200620126630 U CN 200620126630U CN 200987127 Y CN200987127 Y CN 200987127Y
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- langevin
- piezoelectric ceramic
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- ultrasonic motor
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Abstract
A K-shaped linear ultrasonic motor includes a mover and a stator and is characterized in that the mover is a linear guide rail, the stator is formed by two mutual perpendicular central lines of langevin-type transducer, and the linear guide rail and the two langevin-type transducers are arranged as a K-shaped structure in a plane. The mover and the stator are designed as K-shaped structure by the utility model, moreover, the stator is formed by two mutual perpendicular langevin-type transducers with first order longitudinal vibration operating modal. Therefore, combined with the d33 effect of a piezoelectric ceramic, the exciting vibration effect of the piezoelectric ceramic can be fully taken use of, enhancing the driving capability of the motor. Therefore, the utility model is characterized in that the motor has high efficiency and big output power, with simple and compact structure.
Description
Technical field
The utility model relates to machine field, particularly a kind of linear ultrasonic motor.
Background technology
Traditional electromagnetic machine has 100 years of development history.No matter in theory, on the method for designing and on the manufacturing technology, reached very perfect degree.But because the restriction of its operation principle and structure, be difficult to satisfy requirements such as weak point that defence product such as current spaceship, artificial satellite, aircraft, carrier rocket and other electronic equipment, precision instrument etc. further propose motor, little, thin, low noise, no electromagnetic interference.For this reason, other novel small and special electric machine is all being explored in countries in the world.Wherein, the ultrasound electric machine that grows up is one of most typical representative the late 20th century.
Ultrasound electric machine (Ultrasonic Motor, be called for short USM) be the inverse piezoelectric effect of utilizing piezoelectric, make elastomer produce the microscopic vibration (micron order) of supersonic frequency (more than 20kHz), and this microscopic vibration is converted to the novel driving device of macroscopic motion (rotating or rectilinear motion) by friction or other type of action.It is to adopt brand-new principle and structural design to form, and does not need magnet and coil, has broken the notion that is obtained the motor of rotating speed and moment of torsion up to now by galvanomagnetic effect, is one of new and high technology that is in current subject forward position.
Ultrasound electric machine can be divided into rotary-type and linear pattern two classes by its forms of motion classification.Compare with traditional electromagnetic machine, the maximum characteristics of linear type ultrasound motor are to need not movement conversion mechanism, directly drive mover (rotor that is equivalent to rotary-type motor) and realize rectilinear motion.The research of linear type ultrasound motor slightly is later than rotary-type ultrasound electric machine, because its unique advantage enjoys favor, becomes the another research focus in this field.Particularly after the eighties in last century, states such as Japan, the U.S., Russia, Israel, Singapore have successively developed the linear electric motors of various types, and wherein some linear type ultrasound motor has obtained application.For example, Japan utilizes linear type ultrasound motor to come the remote-control car speculum, and the U.S. is applied to the U.S. information industry with linear type ultrasound motor, and Israel drives vacuum X-Y precision stage with linear type ultrasound motor.Japan is in the prostatitis of still walking aspect the research of linear type ultrasound motor in the world.
Domestic research to linear type ultrasound motor starts from the nineties, and domestic colleges and universities such as Tsing-Hua University, Nanjing Aero-Space University, HUST, Harbin Institute of Technology have carried out the research of this respect and obtained certain achievement.But generally speaking, linear type ultrasound motor still is in conceptual phase at present at home, does not also obtain practical application.
Summary of the invention
The utility model provides a kind of K shape linear ultrasonic motor, its objective is to pass through appropriate design mover and stator structure, makes the drive end of stator obtain peak swing and thrust output, thereby improves motor properties.
For achieving the above object, the technical solution adopted in the utility model is: a kind of K shape linear ultrasonic motor, comprise mover and stator, mover is a straight line guide rail, stator constitutes by two Langevin-type transducer center lines are orthogonal, and line slideway and two Langevin-type transducers are arranged to " K " font structure in a plane.
Related content in the technique scheme is explained as follows:
1, in the such scheme, described each Langevin-type transducer mainly is made up of the electrode slice of head, cylindrical tail portion, one group of piezoelectric ceramic piece and respective amount; The head of two Langevin-type transducers combines as a whole, and becomes drive end; The rear end of two heads is provided with a bearing; Each Langevin-type transducer is laminated cylindrical tail portion, piezoelectric ceramic piece, electrode slice, bearing successively along center line by a bolt and is fixed on the head rear end.
2, in the such scheme, the outer circumference of the cylindrical tail portion of described each Langevin-type transducer is to offering the cannelure that amplifies amplitude.
3, in the such scheme, the spread pattern of described piezoelectric ceramic piece and electrode slice is: one group of piezoelectric ceramic piece stacks so that the same polarity side is relative at described centerline direction, and electrode slice then one folds up every one and to form the high-frequency ac exciting electrode in each piezoelectric ceramic piece both sides.
4, such scheme utilizes the d of piezoelectric ceramic
33Effect.Piezoelectric ceramic has three kinds of (contrary) piezoelectric effects, uses three piezoelectric constant d respectively
33, d
31And d
15Represent.Because d
33Numerically than d
31, d
15Much bigger, thereby its (contrary) piezoelectric effect and arousal effect are best.
Because the technique scheme utilization, the utility model compared with prior art has following advantage:
1, the utility model becomes " K " shape structure with mover with stator design, and stator Langevin-type transducer orthogonal by two, that have single order longitudinal vibration operation mode forms, and can utilize the d of piezoelectric ceramic like this
33Effect, bring into play to greatest extent piezoelectric ceramic the exciting effect, help strengthening the driving force of motor, therefore have characteristics such as efficient height, power output are big, simple and compact for structure.
2, the utility model is different with existing, similar abroad linear type ultrasound motor on the mode of vibration of motor stator, stator is operated in resonance state (being the single order longitudinal vibration), can make the drive end of stator obtain peak swing like this, also help improving the output performance of motor.
3, the outer circumference of the utility model cylindrical tail portion has a significant effect to amplifying amplitude to offering cannelure.
In a word, These characteristics has determined K shape linear electric motors can obtain big thrust output and high movement velocity.Simultaneously, because having, ultrasound electric machine itself cuts off self-lock, responds advantages such as fast, can guarantee that motor has high kinematic accuracy, therefore need the straight-line occasion of high accuracy that wide application prospect is arranged at semi-conductor industry, Aero-Space servo-control system, computer peripheral equipment, Digit Control Machine Tool, precision instrumentation etc.
Description of drawings
Accompanying drawing 1 is the utility model K shape linear ultrasonic motor embodiment stereogram;
Accompanying drawing 2 is the stationary part three-dimensional exploded view among Fig. 1.
In the above accompanying drawing: 1, line slideway; 2, Langevin-type transducer; 3, head; 4, cylindrical tail portion; 5, piezoelectric ceramic piece; 6, electrode slice; 7, drive end; 8, bearing; 9, bolt; 10, cannelure.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment: referring to Fig. 1 and Fig. 2, a kind of K shape linear ultrasonic motor, mechanical structure is made up of mover and stator two parts.Mover is a straight line guide rail 1, and stator constitutes by two Langevin-type transducer 2 center lines are orthogonal, and line slideway 1 and two Langevin-type transducers 2 are arranged to " K " font structure in a plane.Described each Langevin-type transducer 2 mainly is made up of head 3, cylindrical tail portion 4, five piezoelectric ceramic pieces 5 and six electrode slices 6.The head 3 of two Langevin-type transducers 2 combines as a whole, and the rear end that becomes 7, two heads 3 of drive end is provided with a bearing 8.Each Langevin-type transducer 2 is laminated cylindrical tail portion 4, piezoelectric ceramic piece 5, electrode slice 6, bearing 8 successively along center line by a bolt 9 and is fixed on head 3 rear ends.The outer circumference of the cylindrical tail portion 4 of each Langevin-type transducer 2 is to offering the cannelure 10 that amplifies amplitude.
The spread pattern of described piezoelectric ceramic piece and electrode slice is: five piezoelectric ceramic pieces 5 stack so that the same polarity side is relative at centerline direction (such as, first and second sheet is relatively anodal, second is relative with the 3rd negative pole, and the 3rd is relative with the 4th positive pole, and the 4th is relative with the 5th negative pole; Perhaps conversely, first and second sheet negative pole is relative, and second is relative with the 3rd positive pole, and the 3rd is relative with the 4th negative pole, and the 4th is anodal relative with the 5th), electrode slice 6 then one folds up at each piezoelectric ceramic piece 5 both sides formation high-frequency ac exciting electrode every one.
Present embodiment K shape linear ultrasonic motor the key technical indexes is as follows:
Maximum thrust＞20N
Maximal rate＞0.1m/s
Position resolution＜1 μ m
Stator volume＜50 * 50 * 30mm
3
Effective travel ± 50mm
Major economic indicators and benefit: if produce in batches, 500 yuan of 1 motor (comprising driver) costs, 2000 yuan of prices, the profit of 1 motor are 1500 yuan.Calculate if produce 8000 motors per year, annual return is 1,200 ten thousand yuan.
The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection range of the present utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection range of the present utility model.
Claims (4)
1, a kind of K shape linear ultrasonic motor, comprise mover and stator, it is characterized in that: mover is a straight line guide rail, and stator constitutes by two Langevin-type transducer center lines are orthogonal, and line slideway and two Langevin-type transducers are arranged to " K " font structure in a plane.
2, K shape linear ultrasonic motor according to claim 1 is characterized in that: described each Langevin-type transducer mainly is made up of the electrode slice of head, cylindrical tail portion, one group of piezoelectric ceramic piece and respective amount; The head of two Langevin-type transducers combines as a whole, and becomes drive end; The rear end of two heads is provided with a bearing; Each Langevin-type transducer is laminated cylindrical tail portion, piezoelectric ceramic piece, electrode slice, bearing successively along center line by a bolt and is fixed on the head rear end.
3, K shape linear ultrasonic motor according to claim 2 is characterized in that: the outer circumference of the cylindrical tail portion of described each Langevin-type transducer is to offering the cannelure that amplifies amplitude.
4, K shape linear ultrasonic motor according to claim 2, it is characterized in that: the spread pattern of described piezoelectric ceramic piece and electrode slice is: one group of piezoelectric ceramic piece stacks so that the same polarity side is relative at described centerline direction, and electrode slice then one folds up every one and to form the high-frequency ac exciting electrode in each piezoelectric ceramic piece both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620126630 CN200987127Y (en) | 2006-10-30 | 2006-10-30 | K-shaped straight line ultrasonic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620126630 CN200987127Y (en) | 2006-10-30 | 2006-10-30 | K-shaped straight line ultrasonic motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200987127Y true CN200987127Y (en) | 2007-12-05 |
Family
ID=38916580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620126630 Expired - Fee Related CN200987127Y (en) | 2006-10-30 | 2006-10-30 | K-shaped straight line ultrasonic motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200987127Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101984550A (en) * | 2010-11-24 | 2011-03-09 | 南京航空航天大学 | Flexible hinge based clamping and positioning device for linear ultrasonic motor |
| CN102025287A (en) * | 2010-11-25 | 2011-04-20 | 南京航空航天大学 | Linear ultrasonic motor based on alternating force |
| CN102142790A (en) * | 2011-04-14 | 2011-08-03 | 天津大学 | Method for exciting rotary ultrasonic motor |
| 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 |
| CN101694975B (en) * | 2009-10-16 | 2012-05-23 | 南京航空航天大学 | Bidirectional single-mode inclined track V-shaped linear ultrasonic motor and electric excitation mode |
| CN102497131A (en) * | 2011-12-16 | 2012-06-13 | 苏州市职业大学 | Actuator for linear type ultrasound motor |
| CN104013475A (en) * | 2014-05-06 | 2014-09-03 | 苏州市职业大学 | Ultrasonic wave tooth cleaning device with double langevin oscillators |
| CN105515439A (en) * | 2016-01-08 | 2016-04-20 | 苏州市职业大学 | Laminated piezoelectric ceramic linear ultrasonic motor |
-
2006
- 2006-10-30 CN CN 200620126630 patent/CN200987127Y/en not_active Expired - Fee Related
Cited By (13)
| 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 |
| CN101694975B (en) * | 2009-10-16 | 2012-05-23 | 南京航空航天大学 | Bidirectional single-mode inclined track V-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 |
| CN101984550A (en) * | 2010-11-24 | 2011-03-09 | 南京航空航天大学 | Flexible hinge based clamping and positioning device for linear ultrasonic motor |
| CN101984550B (en) * | 2010-11-24 | 2012-07-18 | 南京航空航天大学 | Flexible hinge based clamping and positioning device for linear ultrasonic motor |
| CN102025287A (en) * | 2010-11-25 | 2011-04-20 | 南京航空航天大学 | Linear ultrasonic motor based on alternating force |
| CN102142790B (en) * | 2011-04-14 | 2013-11-06 | 天津大学 | Method for exciting rotary ultrasonic motor |
| CN102142790A (en) * | 2011-04-14 | 2011-08-03 | 天津大学 | Method for exciting rotary ultrasonic motor |
| CN102497131A (en) * | 2011-12-16 | 2012-06-13 | 苏州市职业大学 | Actuator for linear type ultrasound motor |
| CN102497131B (en) * | 2011-12-16 | 2015-07-15 | 苏州市职业大学 | Actuator for linear type ultrasound motor |
| CN104013475A (en) * | 2014-05-06 | 2014-09-03 | 苏州市职业大学 | Ultrasonic wave tooth cleaning device with double langevin oscillators |
| CN104013475B (en) * | 2014-05-06 | 2016-08-24 | 苏州市职业大学 | A kind of ultrasonic tooth device of pair of Langevin-type transducer |
| CN105515439A (en) * | 2016-01-08 | 2016-04-20 | 苏州市职业大学 | Laminated piezoelectric ceramic linear ultrasonic motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071205 Termination date: 20121030 |