CN202309562U - Piezoelectric stepping type double-way linear driver - Google Patents
Piezoelectric stepping type double-way linear driver Download PDFInfo
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- CN202309562U CN202309562U CN2011204697505U CN201120469750U CN202309562U CN 202309562 U CN202309562 U CN 202309562U CN 2011204697505 U CN2011204697505 U CN 2011204697505U CN 201120469750 U CN201120469750 U CN 201120469750U CN 202309562 U CN202309562 U CN 202309562U
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- clamper
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- screw rod
- clamping
- flexible hinge
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Abstract
The utility model relates to a piezoelectric stepping type double-way linear driver and belongs to a driving machine. A screw centering shell is fixedly arranged outside a shell assembly; rotors and stators are arranged in the shell assembly; the stators and the shell assembly are fixedly arranged into a whole through bolts; the stators are connected with the rotors through rotor flexible hinges; driving piezoelectric devices are arranged in driving grooves of the stators; two clamping blocks are arranged in rotor central holes; the two clamping blocks are connected with the rotors respectively through clamping flexible hinges; clamping piezoelectric devices are arranged in clamping grooves of the rotors; clamping nuts are arranged between the opposite parts of the two clamping blocks; screws are arranged in threaded holes of the clamping nuts; the screws can move axially and are inserted into the screw centering shell in a circumferential and radial positioning manner; and a controller controls the driving piezoelectric devices and the clamping piezoelectric devices respectively. The piezoelectric stepping type double-way linear driver is reasonable in structural design, precise in output, reliable in operation, convenient to control, wide in application range and high in adaptability.
Description
Technical field
The invention belongs to driver, relates generally to a kind of controlled piezo-electric type stepping two-way linear driver of displacement of exporting.
Background technology
In daily production, the life, the revolution of machine tool chief axis, the motion of automatic door and window etc. all need a kind of these target objects that can make to produce the device of confirming mechanical action, and this type device is exactly a driver.Impulse stroke, movement velocity, resolution and bearing capacity are to weigh the important technology index of drive performance.The traditional driving device has bigger impulse stroke, higher movement velocity and bearing capacity usually, but volume is comparatively huge, the Motion Resolution rate is also not really high.Along with widening of science and technology development and human research field, the spacecraft launching site of macroscopic view, the applications such as integrated circuit manufacturing detection of microcosmic, the traditional driving device can't satisfy these requirements, and all kinds of new-type drivers arise at the historic moment.The piezo-electric type driver that wherein with the piezoelectric element is the power conversion element becomes an important branch.Piezoelectric actuator is the micro positioner that utilizes the inverse piezoelectric effect making of piezoelectric, has advantages such as good stability, response is rapid, the location is accurate, actuating force is big, so is fit to very much be applied in the precision positioning technology field.But the weak point of piezoelectric actuator is that stroke is too little, and these have limited the application of piezoelectric actuator.Therefore, utilizing piezoelectric actuator and advanced mechanism to constitute next-generation drive is one of current accurate research emphasis that drives.
Summary of the invention
The purpose of the invention is exactly the problem that exists to above-mentioned prior art; Design provides a kind of piezo-electric type stepping two-way linear driver of new construction, reaches to adapt to micro-stepping and drive, satisfy the micro-stepping long stroke that adds up and drive, realize the purpose of bi-directional drive.
The purpose of the invention is achieved in that and on the downside outside in housing assembly centre, installs screw rod centering housing; Inside at housing assembly disposes rotor and stator from the inside to the outside successively; Through bolt stator and housing assembly are solidly fixed; Interconnect through the rotor flexibility hinge between stator and the rotor, equipped respectively drive pressure electric device in two driver slots that on stator, are oppositely arranged, described drive pressure electric device two ends respectively with stator and rotor contact matching; In rotor bore, dispose two clamper pieces relatively; The clamper flexible hinge is connected two clamper pieces respectively with rotor; Equipped respectively clamper piezoelectric device in two clamper grooves that on rotor, are oppositely arranged, described clamper piezoelectric device two ends respectively with rotor and clamper piece contact matching; Configuration clamper nut between relative position, two clamper piece centers, screw rod is installed in the clamper nut thread hole through threaded engagement, and described screw rod following side can move axially, circumferentially and being inserted in the screw rod centering housing of radial location; Controller is controlling and driving piezoelectric device and clamper piezoelectric device respectively; The thread helix lift angle angle value of described screw rod and clamper nut is in the angle value scope of self-locking each other.Rotor flexibility hinge and clamper flexible hinge all adopt straight beam type flexible hinge or chamfering type flexible hinge or circular arc type flexible hinge or ellipse flexible hinge, so far constitute piezo-electric type stepping two-way linear driver.
The invention can be through changing the stepping rate that the incoming frequency adjustment rotatablely moves; Through changing input voltage adjustment step-wise displacement; Realize that long stroke drives; Realize two-way output straight-line displacement through changing control timing, have the advantages that structural design is new reasonable, output is accurate, operation is reliable, control is convenient, applied widely, adaptive capacity is strong, can be widely used in the accurate location that drives of numerous areas such as Aero-Space, industrial technology, medical science.
Description of drawings
Fig. 1 is a piezo-electric type stepping two-way linear driver general structure sketch map;
Fig. 2 be among Fig. 1 A-A to cutaway view;
Fig. 3 is a piezo-electric type stepping two-way linear driver forward drive signal waveforms;
Fig. 4 is a piezo-electric type stepping two-way linear driver reverse drive signals oscillogram.
Piece number explanation among the figure:
1, controller, 2, rotor flexibility hinge, 3, screw rod, 4, bolt, 5, clamper flexible hinge, 6, drive pressure electric device, 7, clamper piece, 8, clamper piezoelectric device, 9, housing assembly, 10, stator, 11, rotor, 12, clamper nut, 13, screw rod centering housing.
Embodiment
Below in conjunction with accompanying drawing the invention embodiment is described in detail.A kind of piezo-electric type stepping two-way linear driver; On the downside outside in housing assembly 9 centres, install screw rod centering housing 13; Dispose rotor 11 and stator 10 from the inside to the outside successively in the inside of housing assembly 9; Through bolt 4 stator 10 and housing assembly 9 are solidly fixed; Interconnect through rotor flexibility hinge 2 between stator 10 and the rotor 11, equipped respectively drive pressure electric device 6 in two driver slots that on stator 10, are oppositely arranged, described drive pressure electric device 6 two ends respectively with stator 10 and rotor 11 contact matching; In rotor 11 centre bores, dispose two clamper pieces 7 relatively; Clamper flexible hinge 5 is connected two clamper pieces 7 respectively with rotor 11; Equipped respectively clamper piezoelectric device 8 in two clamper grooves that on rotor 11, are oppositely arranged, described clamper piezoelectric device 8 two ends respectively with rotor 11 and clamper piece 7 contact matching; Configuration clamper nut 12 between relative position, two clamper piece 7 centers, screw rod 3 is installed in clamper nut 12 screwed holes through threaded engagement, and described screw rod 3 following sides can move axially, circumferentially and being inserted in the screw rod centering housing 13 of radial location; Controller 1 is controlling and driving piezoelectric device 6 and clamper piezoelectric device 8 respectively; The thread helix lift angle angle value of described screw rod 3 and clamper nut 12 is in the angle value scope of self-locking each other.Rotor flexibility hinge 2 all adopts straight beam type flexible hinge or chamfering type flexible hinge or circular arc type flexible hinge or ellipse flexible hinge with clamper flexible hinge 5.
In conjunction with Fig. 3 and Fig. 4, the invention realizes the bi-directional drive of driver through two-way drive signal sequential.Controller 1 provides two passages independently to control voltage signal and supplies with drive pressure electric device 6 and clamper piezoelectric device 8 respectively, and wherein the first via is clamper piezoelectric device 8 drive signals, and the second the tunnel is drive pressure electric device 6 drive signals.The sequential relationship that adopts the stage control procedure to constitute is controlled driver, and this control timing can guarantee the realization of stepper drive.Carry out 4 five equilibriums to a stepping period T, every section time t=T/4, the power-off time of clamp voltage signal are 2t, and be 2t conduction time, and the energising and the power-off time of drive voltage signal equate.
In conjunction with Fig. 1, Fig. 2 and Fig. 3 the course of work that the invention realizes the forward drive of driver is described.Begin from Fig. 3 left side: first t; Clamper piezoelectric device 8 is in "on" position and produces stretching motion, drives clamper flexible hinge 5 and occurs bending and deformation, and promotion clamper piece 7 along continuous straight runs move holds clamper nut 12 tightly; Drive pressure electric device 6 is in off-position, and driver does not have step motion; Second t; Clamper piezoelectric device 8 keeps "on" position; Drive pressure electric device 6 is in "on" position and produces stretching motion, promotes rotor flexibility hinge 2 and occurs bending and deformation, and drives rotor 11 generation minute angles and rotatablely moves; Drive clamper nut 12 rotations of being held tightly by clamper piece 7 simultaneously, straight line takes place along housing assembly 9 with screw rod centering housing 13 and moves in screw rod 3; The 3rd t, drive pressure electric device 6 keeps the state of power supply, clamper piezoelectric device 8 outage retractions, clamper flexible hinge 5 drives clamper piece 7 and unclamps clamper nut 12 because the elastic recovery effect springs back to initial position; The 4th t; Clamper piezoelectric device 8 keeps under the state of outage, drive pressure electric device 6 outage retractions, and rotor flexibility hinge 2 is because the elastic recovery effect springs back to initial position; Drive rotor 11 and be turned back to initial position; This moment, screw rod 3 was accomplished the interior straight-line displacement of one-period under the coordinative role of controller 1 and mechanical structure, realized the forward drive of driver.
In conjunction with Fig. 1, Fig. 2 and Fig. 4 the course of work that the invention realizes the reverse drive of driver is described.Begin from Fig. 4 left side: first t, clamper piezoelectric device 8 is in off-position, and drive pressure electric device 6 is in "on" position and produces stretching motion, promotes rotor flexibility hinge 2 and occurs bending and deformation, and drive rotor 11 produces minute angle and rotatablely moves; Second t, drive pressure electric device 6 keeps "on" position, and clamper piezoelectric device 8 is in "on" position and produces stretching motion, drives clamper flexible hinge 5 and occurs bending and deformation, and promotion clamper piece 7 along continuous straight runs move holds clamper nut 12 tightly; The 3rd t; Clamper piezoelectric device 8 keeps "on" position; Drive pressure electric device 6 outage retractions, rotor flexibility hinge 2 drives rotor 11 and is turned back to initial position because the elastic recovery effect springs back to initial position; Drive clamper nut 12 rotations of being held tightly by clamper piece 7 simultaneously, straight line takes place along housing assembly 9 with screw rod centering housing 13 and moves in screw rod 3; The 4th t; Drive pressure electric device 6 keeps the state of outage; Clamper piezoelectric device 8 outage retractions, clamper flexible hinge 5 is because the elastic recovery effect springs back to initial position, and this moment is under the coordinative role of controller 1 and mechanical structure; The straight-line displacement that screw rod 3 is accomplished in the one-period, the reverse drive of realization driver.
When the drive pressure electric device 6 of driver all was in off-position with clamper piezoelectric device 8,12 on screw rod 3 and clamper nut were static through self-locking assurance screw rod 3, realize that the stepping of straight-line displacement adds up, and accomplish long travel displacement and drive.
Claims (2)
1. piezo-electric type stepping two-way linear driver; It is characterized in that on the downside outside in housing assembly (9) centre, installing screw rod centering housing (13); Dispose rotor (11) and stator (10) from the inside to the outside successively in the inside of housing assembly (9); Through bolt (4) stator (10) and housing assembly (9) are solidly fixed; Interconnect through rotor flexibility hinge (2) between stator (10) and the rotor (11), equipped respectively drive pressure electric device (6) in two driver slots that on stator (10), are oppositely arranged, described drive pressure electric device (6) two ends respectively with stator (10) and rotor (11) contact matching; In rotor (11) centre bore, dispose two clamper pieces (7) relatively; Clamper flexible hinge (5) is connected two clamper pieces (7) respectively with rotor (11); Equipped respectively clamper piezoelectric device (8) in two clamper grooves that on rotor (11), are oppositely arranged, described clamper piezoelectric device (8) two ends respectively with rotor (11) and clamper piece (7) contact matching; Configuration clamper nut (12) between relative position, two clamper pieces (7) center; Screw rod (3) is installed in clamper nut (12) screwed hole through threaded engagement, and described screw rod (3) following side can move axially, circumferentially and being inserted in the screw rod centering housing (13) of radial location; Controller (1) is controlling and driving piezoelectric device (6) and clamper piezoelectric device (8) respectively; The thread helix lift angle angle value of described screw rod (3) and clamper nut (12) is in the angle value scope of self-locking each other.
2. piezo-electric type stepping two-way linear driver according to claim 1 is characterized in that rotor flexibility hinge (2) and clamper flexible hinge (5) all adopt straight beam type flexible hinge or chamfering type flexible hinge or circular arc type flexible hinge or ellipse flexible hinge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204697505U CN202309562U (en) | 2011-11-09 | 2011-11-09 | Piezoelectric stepping type double-way linear driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204697505U CN202309562U (en) | 2011-11-09 | 2011-11-09 | Piezoelectric stepping type double-way linear driver |
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| Publication Number | Publication Date |
|---|---|
| CN202309562U true CN202309562U (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204697505U Expired - Fee Related CN202309562U (en) | 2011-11-09 | 2011-11-09 | Piezoelectric stepping type double-way linear driver |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386802A (en) * | 2011-11-09 | 2012-03-21 | 黑龙江科技学院 | Piezoelectric stepped bidirectional linear driver |
| CN104753393A (en) * | 2015-02-05 | 2015-07-01 | 西安交通大学 | Dual piezoelectric stack steeping rotary actuator containing curved beam structure and method |
| CN106685260A (en) * | 2016-11-23 | 2017-05-17 | 同济大学 | M-phase driving stepping supersonic motor |
-
2011
- 2011-11-09 CN CN2011204697505U patent/CN202309562U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386802A (en) * | 2011-11-09 | 2012-03-21 | 黑龙江科技学院 | Piezoelectric stepped bidirectional linear driver |
| CN102386802B (en) * | 2011-11-09 | 2014-04-30 | 黑龙江科技学院 | Piezoelectric stepped bidirectional linear driver |
| CN104753393A (en) * | 2015-02-05 | 2015-07-01 | 西安交通大学 | Dual piezoelectric stack steeping rotary actuator containing curved beam structure and method |
| CN104753393B (en) * | 2015-02-05 | 2017-02-01 | 西安交通大学 | Dual piezoelectric stack steeping rotary actuator containing curved beam structure and method |
| CN106685260A (en) * | 2016-11-23 | 2017-05-17 | 同济大学 | M-phase driving stepping supersonic motor |
| CN106685260B (en) * | 2016-11-23 | 2018-10-26 | 同济大学 | A kind of m phases drive ultrasonic step wave motor |
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| Date | Code | Title | Description |
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| 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: 20120704 Termination date: 20121109 |