CN214315088U - Large-stroke piezoelectric inertia driving platform - Google Patents
Large-stroke piezoelectric inertia driving platform Download PDFInfo
- Publication number
- CN214315088U CN214315088U CN202120645760.3U CN202120645760U CN214315088U CN 214315088 U CN214315088 U CN 214315088U CN 202120645760 U CN202120645760 U CN 202120645760U CN 214315088 U CN214315088 U CN 214315088U
- Authority
- CN
- China
- Prior art keywords
- inertia
- sliding
- platform
- inertial
- mass block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model relates to a big stroke piezoelectricity inertia drive platform belongs to the precision machinery field. The piezoelectric vibration damper comprises a base, a sliding guide rail, a mass block, a piezoelectric element, an inertia mechanism, a flexible hinge and a sliding platform. The piezoelectric element converts electric energy into kinetic energy based on the inverse piezoelectric effect of the piezoelectric ceramic, and drives the mass block to move by using the inertia principle; the time-lag effect of the flexible hinge is utilized to enable the additional mass block to generate secondary inertial motion, and the single-step stroke of the inertial platform is improved. The inertia mechanism comprises a flexible structure and a mass structure and generates inertia motion; the sliding guide rail is fixed on the base, the moving part is fixed below the sliding platform through threaded connection, and the sliding platform slides in the guide rail. At present, the method has good application prospect in the fields of nanotechnology, optical instruments and micromanipulation.
Description
Technical Field
The utility model relates to an accurate machinery field, in particular to big stroke piezoelectricity inertia drive platform can be used to fields such as aviation field, medical equipment, micro-operation, optical instrument.
Background
The piezoelectric driving technology is a precise driving technology for controlling mechanical deformation and further outputting force and displacement based on the inverse piezoelectric effect of a piezoelectric material, has the characteristics of simple structure, high precision, high resolution, electromagnetic interference resistance and the like, and has important application in the fields of optical instruments, nanotechnology, medical instruments and the like. The piezoelectric driving device has more motion principles, and mainly comprises an inertial motion principle, an inchworm motion principle, a resonance principle and the like at present, wherein the inertial motion principle is divided into a friction inertial principle and an impact inertial principle, and has the characteristic of simple structure; the inertia actuating mechanism has been widely used in the fields of microsurgery microscope, semiconductor manufacture, precise optical alignment, etc. due to its long distance, ultra-precision and miniaturization characteristics. The inertia principle needs to overcome the friction force to make itself move due to its driving characteristic, so the efficiency and the stroke are influenced to a certain extent.
In summary, although the inertia driving principle has a simple structure, the stroke and efficiency problems are significant, and some improvements in the structure of the inertia mechanism are required to further increase the stroke.
Disclosure of Invention
An object of the utility model is to provide a big stroke piezoelectricity inertia drive platform solves the problem that the aforesaid exists. The utility model discloses utilize inertia drive principle to make the mechanism shorten the in-process at the piezoelectric element extension and produce the motion to utilize the time lag effect of flexible hinge to make the quality piece produce inertial impact to the mechanism, make sliding platform produce the slip along the slip track, realized the big stroke motion of straight line. The utility model provides a big stroke piezoelectricity inertia drive platform has characteristics such as stroke length, with low costs, control is simple, positioning accuracy is high, efficiency optimization.
The above object of the utility model is realized through following technical scheme:
a large-stroke piezoelectric inertia driving platform utilizes an inertia driving principle and a time-lag effect of a flexible hinge to increase a single-step stroke; the piezoelectric actuator comprises a base 1, a sliding rail 2, an inertia mechanism 3, a piezoelectric element 4, a flexible hinge 5, a mass block 6 and a sliding platform 7; the inertia mechanism 3 comprises a flexible structure and a mass structure, and the inertia mechanism 3 is provided with two mounting position fixed flexible hinges and is fixed below the sliding platform 7 through threaded connection; under the action of an electric signal in the working process, the piezoelectric element 4 drives the inertia mechanism 3 to generate inertia motion, and drives the sliding platform 7 to slide on the sliding track 2.
The piezoelectric element 4 is installed in the installation groove of the inertia mechanism 3 after being pre-tightened, generates deformation of slow extension and fast contraction under the excitation action of an electric signal, transmits the deformation to the mass structure of the inertia mechanism 3 through the flexible structure of the inertia mechanism 3, and the mass structure continuously drives the inertia mechanism 3 to move forwards integrally due to inertia.
One end of the flexible hinge 5 is connected with the inertia mechanism 3, and the other end of the flexible hinge is connected with the mass block 6, so that the inertial motion of the inertia mechanism 3 is transmitted to the mass block 6 at the other end; due to the time lag effect generated by the deformation of the flexible hinge, the inertial motion generated by the inertial structure 3 is transmitted to the mass block 6 after a certain delay; the kinetic energy of the mass 6 gives rise to an inertial impulse to the mechanism, giving rise to an additional stroke of the inertial mechanism 3.
The sliding rail 2 is fixed on the base 1, the sliding platform 7 slides on the sliding rail 2, the lower part of the sliding platform 7 is provided with a threaded hole for mounting the inertia mechanism 3, and the accumulated positive displacement is excited by periodic electric signals to enable the sliding platform 7 to generate macroscopic linear motion.
The beneficial effects of the utility model reside in that: the inertia motion is realized by using the time lag effect of the flexible hinge, and the single step stroke is improved. Compact structure, low cost, simple control, no electromagnetic interference and good application prospect in the fields of optical instruments, medical instruments and micromanipulation.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate example embodiments of the invention and together with the description serve to explain the invention without limitation.
FIG. 1 is a schematic view of the overall structure of the present invention
FIG. 2 is a schematic view of the inertial structure of the present invention
FIG. 3 is a schematic view of the flexible hinge of the present invention
FIG. 4 is a schematic diagram of the movement of the present invention
FIG. 5 is a driving electrical signal diagram of the present invention
In the figure: 1. a base; 2. a sliding track; 3. an inertial mechanism; 4. a piezoelectric element; 5. a flexible hinge; 6. a mass block; 7. a sliding platform; 31. a flexible structure; 32. and (5) quality structure.
Detailed Description
The details of the present invention and its embodiments are further described below with reference to the accompanying drawings.
Referring to fig. 1 and 4, the utility model relates to a large-stroke piezoelectric inertia driving platform, which belongs to the field of precision machinery. The piezoelectric vibration damper comprises a base, a sliding guide rail, a mass block, a piezoelectric element, an inertia mechanism, a flexible hinge and a sliding platform. The piezoelectric element converts electric energy into kinetic energy based on the inverse piezoelectric effect of the piezoelectric ceramic, and drives the mass block to move by using the inertia principle; the time-lag effect of the flexible hinge is utilized to enable the additional mass block to generate secondary inertial motion, and the single-step stroke of the inertial platform is improved. The inertia mechanism comprises a flexible structure and a mass structure and generates inertia motion; the sliding guide rail is fixed on the base, the moving part is fixed below the sliding platform through threaded connection, and the sliding platform slides in the guide rail. At present, the method has good application prospect in the fields of nanotechnology, optical instruments and micromanipulation.
Referring to fig. 1 and 4, the present invention provides a large stroke piezoelectric inertia driving platform, which utilizes the inertia driving principle and the time lag effect of a flexible hinge to increase the single step stroke, and includes: the device comprises a base, a sliding rail, an inertia mechanism, a piezoelectric element, a flexible hinge, a mass block and a sliding platform.
The inertia mechanism 3 comprises a flexible structure and a mass structure, and the inertia mechanism 3 is provided with two mounting position fixed flexible hinges and is fixed below the sliding platform 7 through threaded connection; under the action of an electric signal in the working process, the piezoelectric element 4 drives the inertia mechanism 3 to generate inertia motion, and drives the sliding platform 7 to slide on the sliding track 2.
The piezoelectric element 4 is installed in the installation groove of the inertia mechanism 3 after being pre-tightened, generates deformation of slow extension and fast contraction under the excitation action of an electric signal, transmits the deformation to the mass structure of the inertia mechanism 3 through the flexible structure of the inertia mechanism 3, and the mass structure continuously drives the inertia mechanism 3 to move forwards integrally due to inertia.
One end of the flexible hinge 5 is connected with the inertia mechanism 3, and the other end is connected with the mass block 6, so that the inertia motion of the inertia mechanism 3 is transmitted to the mass block 6 at the other end. Due to the time lag effect generated by the deformation of the flexible hinge, the inertial motion generated by the inertial structure 3 is transmitted to the mass block 6 after a certain delay; the kinetic energy of the mass 6 gives rise to an inertial impulse to the mechanism, giving rise to an additional stroke of the inertial mechanism 3.
The sliding rail 2 is fixed on the base 1, the sliding platform 7 slides on the sliding rail 2, the lower part of the sliding platform 7 is provided with a threaded hole for mounting the inertia mechanism 3, and the accumulated positive displacement is excited by periodic electric signals to enable the sliding platform 7 to generate macroscopic linear motion.
Referring to fig. 2, the inertia mechanism is composed of a flexible structure 31 and a mass structure 32; the deformation of the piezoelectric element 4 is transferred via the flexible structure 31 to the mass structure 32, causing an inertial motion.
Referring to fig. 3, the deformed portion of the flexible hinge 5 is a circular arc, which effectively reduces the rigidity of the structure and provides a deformation space for transmitting the motion generated by the piezoelectric element 3.
The above description is only a preferred example of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made to the present invention should be included in the protection scope of the present invention.
Claims (1)
1. The utility model provides a large stroke piezoelectricity inertia drive platform which characterized in that: the single step stroke is increased by using the inertia driving principle and the time-lag effect of the flexible hinge; the piezoelectric actuator comprises a base (1), a sliding track (2), an inertia mechanism (3), a piezoelectric element (4), a flexible hinge (5), a mass block (6) and a sliding platform (7); the inertia mechanism (3) comprises a flexible structure and a mass structure, and the inertia mechanism (3) is provided with two fixed flexible hinges at installation positions and is fixed below the sliding platform (7) through threaded connection; under the action of an electric signal in the working process, the piezoelectric element (4) drives the inertia mechanism (3) to generate inertia motion to drive the sliding platform (7) to slide on the sliding track (2);
the piezoelectric element (4) is installed in an installation groove of the inertia mechanism (3) after being pre-tightened, is slowly extended and rapidly contracted under the excitation action of an electric signal to generate deformation, the deformation is transmitted to a mass structure of the inertia mechanism (3) through a flexible structure of the inertia mechanism (3), and the mass structure continuously drives the inertia mechanism (3) to integrally move forwards due to inertia;
one end of the flexible hinge (5) is connected with the inertia mechanism (3), and the other end of the flexible hinge is connected with the mass block (6), so that the inertial motion of the inertia mechanism (3) is transmitted to the mass block (6) at the other end; due to the time lag effect generated by the deformation of the flexible hinge, the inertial motion generated by the inertial mechanism (3) is transmitted to the mass block (6) after a certain delay; the kinetic energy of the mass block (6) generates inertial impact on the mechanism, so that the inertial mechanism (3) generates extra stroke;
the sliding rail (2) is fixed on the base (1), the sliding platform (7) slides on the sliding rail (2), the lower portion of the sliding platform (7) is provided with a threaded hole for mounting the inertia mechanism (3), and accumulated positive displacement is excited by periodic electric signals to enable the sliding platform (7) to generate macroscopic linear motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120645760.3U CN214315088U (en) | 2021-03-30 | 2021-03-30 | Large-stroke piezoelectric inertia driving platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120645760.3U CN214315088U (en) | 2021-03-30 | 2021-03-30 | Large-stroke piezoelectric inertia driving platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214315088U true CN214315088U (en) | 2021-09-28 |
Family
ID=77838307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120645760.3U Expired - Fee Related CN214315088U (en) | 2021-03-30 | 2021-03-30 | Large-stroke piezoelectric inertia driving platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214315088U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112865596A (en) * | 2021-03-30 | 2021-05-28 | 吉林大学 | Large-stroke piezoelectric inertia driving platform |
-
2021
- 2021-03-30 CN CN202120645760.3U patent/CN214315088U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112865596A (en) * | 2021-03-30 | 2021-05-28 | 吉林大学 | Large-stroke piezoelectric inertia driving platform |
| CN112865596B (en) * | 2021-03-30 | 2024-04-12 | 吉林大学 | Large-stroke piezoelectric inertia driving platform |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104467525A (en) | Pretightening force adjustable inertial stick-slip drive trans-dimension precision locating platform | |
| CN107622786B (en) | Two-stage piezoelectric driving micro-nano positioning platform | |
| CN214315088U (en) | Large-stroke piezoelectric inertia driving platform | |
| CN112865597A (en) | Time-lag effect inertial piezoelectric driver based on flexible hinge | |
| CN214480330U (en) | Butterfly stroke type secondary impact inertia piezoelectric driver | |
| CN112865596B (en) | Large-stroke piezoelectric inertia driving platform | |
| CN110912444B (en) | Bionic creeping type piezoelectric actuator | |
| CN110798094B (en) | Piezoelectric linear precision driving device based on parasitic inertia principle | |
| CN104362890B (en) | Inertia stick-slip trans-scale precision movement platform capable of achieving bidirectional movement | |
| CN100413202C (en) | Ultra magnetostrictive high precision linear driver using piezozelectric effect clamping | |
| CN214626828U (en) | Time-lag effect inertial piezoelectric driver based on flexible hinge | |
| CN210490748U (en) | Piezoelectric stick-slip driver based on L-shaped flexible hinge | |
| CN2365816Y (en) | Creeping piezoelectric/electrostrictive micro-feeding positioning apparatus | |
| CN112865593B (en) | Bionic impact piezoelectric driver with high output performance and control method thereof | |
| CN108923683B (en) | A kind of across the scale precision movement platform of miniature stick-slip driving | |
| CN211880315U (en) | Double-excitation three-output magnetic drive precise rotating device | |
| CN210093125U (en) | Counter weight type stepping mechanism | |
| KR20080035063A (en) | Linear actuator using piezoelectric element | |
| CN110798093B (en) | Linear piezoelectric precision driving platform | |
| CN109818524B (en) | Piezoelectric precision driving device and method based on bird wing-shaped bionic flexible mechanism | |
| CN111525833B (en) | Sawtooth wave driven piezoelectric motor | |
| CN112910306B (en) | Butterfly type secondary impact inertial piezoelectric driver | |
| CN2230993Y (en) | Electromagnetic shocking linear motor with nm-step in arbitrary range | |
| CN219237205U (en) | Miniature piezoelectric bidirectional mobile robot | |
| CN110768570B (en) | Micro-nano stepping piezoelectric driving device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20210928 |