CN107425750B - Reinforced piezoelectric actuator device and implementation method thereof - Google Patents
Reinforced piezoelectric actuator device and implementation method thereof Download PDFInfo
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- CN107425750B CN107425750B CN201710705950.8A CN201710705950A CN107425750B CN 107425750 B CN107425750 B CN 107425750B CN 201710705950 A CN201710705950 A CN 201710705950A CN 107425750 B CN107425750 B CN 107425750B
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/10—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing rotary motion, e.g. rotary motors
- H02N2/12—Constructional details
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention discloses a reinforced piezoelectric actuator device and a realization method thereof, wherein the device comprises piezoelectric actuator units, wherein the piezoelectric actuator units are arranged in series; the stator and the rotor of each piezoelectric actuator unit are provided with through holes penetrating up and down, and a coaxial shaft arranged in the through holes is driven by the rotor connection, and one end of the coaxial shaft is arranged as a power output end. The reinforced piezoelectric actuator device and the implementation method thereof adopt the through holes in the centers of the stators and the rotors of the piezoelectric actuator units and the coaxial shafts matched through the through holes, and the rotor of each piezoelectric actuator unit drives the coaxial shafts, so that the driving force series superposition of the piezoelectric actuators can be realized for different application occasions, and the application of the piezoelectric actuators is wider.
Description
Technical Field
The present invention relates to a driving device and a method thereof, and more particularly, to a piezoelectric actuator assembly and a method for implementing the same.
Background
In the prior art, the piezoelectric actuator is a common driving device, and compared with a traditional coil driving motor, the piezoelectric actuator has the characteristics of small volume, low speed, large torque, high precision and high operability, and is suitable for occasions of precisely controlling transmission. However, the existing piezoelectric actuators cannot meet some requirements that require smaller volumes to output greater torque, resulting in a limited range of applications for piezoelectric actuators.
Accordingly, the prior art is still in need of improvement and development.
Disclosure of Invention
The invention aims to provide a reinforced piezoelectric actuator device and a realization method thereof, and provides a piezoelectric actuator device with any reinforced moment and a realization method thereof, aiming at the problem that the piezoelectric actuator in the prior art cannot meet the requirement of outputting larger torque with smaller volume.
The technical scheme of the invention is as follows:
a reinforced piezoelectric actuator device comprising a piezoelectric actuator unit, wherein the piezoelectric actuator unit is provided as a plurality of piezoelectric actuator units connected in series; the stator and the rotor of each piezoelectric actuator unit are provided with through holes penetrating up and down, and a coaxial shaft arranged in the through holes is driven by the rotor connection, and one end of the coaxial shaft is arranged as a power output end.
In the reinforced piezoelectric actuator device, the through hole on the rotor is arranged to be non-circular, and the coaxial corresponding position is arranged to be a corresponding section adapting shape.
In the reinforced piezoelectric actuator device, the through hole on the rotor is provided with a structure with one side flush.
The reinforced piezoelectric actuator device, wherein the piezoelectric actuator units are arranged to be greater than or equal to 2.
The reinforced piezoelectric actuator device is characterized in that a stator of each piezoelectric actuator unit is arranged on a stator base, the stator base is provided with a wing part used for assembling other piezoelectric actuator units in series, and at least two connecting holes are arranged on the wing part.
In the reinforced piezoelectric actuator device, a connecting column is arranged between the wing parts of two adjacent piezoelectric actuator units, wherein the connecting column is provided with a male head with threads at one end and a female head matched with the male heads of other connecting columns at the other end.
The reinforced piezoelectric actuator device comprises three connecting holes and three connecting columns of each piezoelectric actuator unit.
A method of implementing the enhanced piezoelectric actuator device, comprising the steps of:
A. each piezoelectric actuator unit is controlled to drive the same shaft;
B. and driving rotation through the coaxial shaft.
The implementation method includes that in the step A, each piezoelectric actuator unit is controlled to be driven synchronously.
According to the reinforced piezoelectric actuator device and the implementation method thereof, through holes in the centers of the stators and the rotors of the piezoelectric actuator units and the coaxial shafts matched through the through holes are adopted, and the rotor of each piezoelectric actuator unit drives the coaxial shafts, so that the driving force series superposition of the piezoelectric actuators can be realized according to different application occasions, and the application of the piezoelectric actuators is wider.
Drawings
Fig. 1 and 2 are schematic perspective views of different angles of the reinforced piezoelectric actuator device of the present invention.
Fig. 3 is a schematic side view of the horse-shaped piezo-electric actuator device according to the preferred embodiment of the present invention.
Fig. 4 is an exploded schematic view of the piezoelectric actuator device of the present invention.
Fig. 5 is a schematic perspective view of a piezoelectric actuator unit of the present invention.
Fig. 6 is an exploded view showing an assembly structure of the piezoelectric actuator unit of the present invention.
Detailed Description
The preferred embodiments of the present invention are described in detail below.
In a preferred embodiment of the present invention, as shown in fig. 1, 2 and 3, the reinforced piezoelectric actuator device includes a plurality of piezoelectric actuator units 110, preferably three piezoelectric actuator units 110 may be configured according to the length of the coaxial shaft 111 and the torque force to be output. The piezoelectric actuator units 110 are provided in series in plurality, specifically, in parallel, so that the output of the rotor can be output through the coaxial shaft 110.
The stator 112 and the rotor 113 provided with each piezoelectric actuator unit 110 are provided with through holes penetrating up and down, the through holes on the stator 112 are usually provided as more surplus fit holes, and the through holes 114 on the rotor 113 are required to have a transmission function, as shown in fig. 6, by which the rotor 113 is connected to drive the coaxial shafts 111 provided in the through holes. The coaxial shaft 111 has a cross-sectional structure in which a plurality of piezoelectric actuator units 110 are assembled in series, and the other end thereof is provided as a power output end 101, as shown in fig. 1 and 2. The through hole 114 in the rotor 113 may be adapted to the coaxial shaft 111 and form a power output through the coaxial shaft 111.
It will be appreciated that the cross-sectional structure of the coaxial shaft 111 for assembling the piezoelectric actuator unit 110 is provided as a non-circular cross-section, preferably as a fixed cross-section in the axial direction into which it can be assembled from one side, while in the rotational direction the rotor can drive the coaxial shaft 111 in rotation.
To facilitate assembly of the piezoelectric actuator units, the through holes 114 provided in the stator 112 and the rotor 113 should be non-circular and provided with corresponding cross-sectional adaptation shapes at corresponding assembly positions of the coaxial shafts 111 so that each piezoelectric actuator unit can drive coaxial rotation to form a power output outwards. The more specific and easy-to-set structure is that the through hole 114 of the rotor and the corresponding assembly position section of the coaxial shaft 111 are set to be flush on one side, as shown in fig. 4, the flush on one side of the coaxial shaft 111 is formed by turning during the machining process of the shaft, and the assembly end (relative to the power output end) is always provided with the piezoelectric actuator units, so that the piezoelectric actuator units can be assembled one by one conveniently.
When a plurality of motor units are output in series, the whole volume of the reinforced piezoelectric actuator device is prolonged, so that the longest assembly space can be reserved in the structure designed and used for the piezoelectric actuator device, and the number of the adopted piezoelectric actuator units can be adjusted according to actual torque requirements.
In order to facilitate the assembly of the enhanced piezoelectric actuator device according to the present invention in series, as shown in fig. 4, the stator of each piezoelectric actuator unit is disposed on a stator base 121, the stator base 121 is provided with a wing portion for assembling other piezoelectric actuator units in series, and at least two connecting holes 122 are provided on the wing portion. A connecting post 123 is provided between the wing portions of the adjacent two piezoelectric actuator units 110 to support and connect the adjacent two piezoelectric actuator units. The connecting post 123 is configured as a male head with threads at one end and a female head at the other end adapted to the male heads of other connecting posts. In this way, the connecting post 123 is provided as a standardized part that can be used in an assembled configuration. Preferably, the number of the connecting holes and the connecting posts of each piezoelectric actuator unit is greater than or equal to 2, so that the piezoelectric actuator units are more firmly assembled in series. As shown in fig. 5, the stator base of the piezoelectric actuator unit of the present invention is provided with a threaded hole, and the wing part can be formed by additional assembly and connection.
In view of the reinforced piezoelectric actuator device of the present invention, the present invention further provides a realization method, which includes the following steps:
A. each piezoelectric actuator unit is controlled to drive the same shaft;
B. and driving rotation through the coaxial shaft.
The rotary driving forces of the piezoelectric actuator units are transmitted outwards in a coaxial mode, and meanwhile, in the driving control of the piezoelectric actuator, each piezoelectric actuator unit can be controlled to adopt a synchronous driving mode, so that a coaxial superposition output effect is realized. Under drive control, different piezoelectric actuator units can be used for distributing and outputting different driving forces, so that the combined output of the piezoelectric actuator units is realized.
The reinforced piezoelectric actuator device and the implementation method thereof can provide the piezoelectric actuator device with any expansion driving capability aiming at different driving force requirements, and can realize the distribution of driving force through the control of a driving program when the driving capability of a motor exceeds the actually required driving capability of the motor, thereby widely applying the piezoelectric actuator.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
Claims (5)
1. A reinforced piezoelectric actuator device comprising a piezoelectric actuator unit, characterized in that the piezoelectric actuator unit is provided in a plurality of in-series; the stator and the rotor of each piezoelectric actuator unit are provided with through holes which are penetrated up and down, and the rotor is connected with and drives a coaxial shaft arranged in the through holes, and one end of the coaxial shaft is arranged as a power output end;
the through holes on the rotor are arranged to be non-circular, and the coaxial corresponding positions are arranged to be corresponding section adapting shapes;
the through hole on the rotor is provided with a structure with one side being flush;
the coaxial has a cross-sectional structure in which a plurality of piezoelectric actuator units are assembled in series, and the other end of the coaxial is set as a power output end;
the stator of each piezoelectric actuator unit is arranged on a stator seat, the stator seat is provided with a wing part used for assembling other piezoelectric actuator units in series, and at least two connecting holes are arranged on the wing part;
the stator seat of the piezoelectric actuator unit is provided with a threaded hole, and the threaded holes are assembled and connected to form the wing part;
a connecting column is arranged between the wing parts of two adjacent piezoelectric actuator units, wherein the connecting column is provided with a male head with threads at one end and a female head matched with the male heads of other connecting columns at the other end.
2. The reinforced piezoelectric actuator device of claim 1, wherein the piezoelectric actuator units are provided in an amount of 2 or more.
3. The reinforced piezoelectric actuator device according to claim 1, wherein the number of the connection holes and the connection posts of each of the piezoelectric actuator units is greater than or equal to 2.
4. A method of implementing a reinforced piezoelectric actuator device according to any one of claims 1-3, comprising the steps of:
A. each piezoelectric actuator unit is controlled to drive the same shaft;
B. and driving rotation through the coaxial shaft.
5. The method according to claim 4, wherein each piezoelectric actuator unit is controlled to be driven synchronously in step a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710705950.8A CN107425750B (en) | 2017-08-17 | 2017-08-17 | Reinforced piezoelectric actuator device and implementation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710705950.8A CN107425750B (en) | 2017-08-17 | 2017-08-17 | Reinforced piezoelectric actuator device and implementation method thereof |
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| Publication Number | Publication Date |
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| CN107425750A CN107425750A (en) | 2017-12-01 |
| CN107425750B true CN107425750B (en) | 2024-03-19 |
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| CN201710705950.8A Active CN107425750B (en) | 2017-08-17 | 2017-08-17 | Reinforced piezoelectric actuator device and implementation method thereof |
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| CN109474201A (en) * | 2018-10-17 | 2019-03-15 | 山东富驰精密机械科技有限公司 | A kind of piezoelectric actuator group and synchronisation control means |
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| BE610698A (en) * | 1960-12-06 | |||
| AU5554290A (en) * | 1989-05-01 | 1990-11-29 | Louris Bood | Electric machine |
| US6433462B2 (en) * | 2000-02-04 | 2002-08-13 | Asmo Co., Ltd. | Ultrasonic motor and method for manufacturing the same |
| CN207039489U (en) * | 2017-08-17 | 2018-02-23 | 深圳市三阶微控实业有限公司 | A kind of reinforced piezoelectric actuator device |
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