CN208656663U - With the quantitatively adjustable adaptive big load Piexoelectric actuator for pre-tightening function - Google Patents
With the quantitatively adjustable adaptive big load Piexoelectric actuator for pre-tightening function Download PDFInfo
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- CN208656663U CN208656663U CN201821151817.9U CN201821151817U CN208656663U CN 208656663 U CN208656663 U CN 208656663U CN 201821151817 U CN201821151817 U CN 201821151817U CN 208656663 U CN208656663 U CN 208656663U
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Abstract
The utility model relates to a kind of with the quantitatively adjustable adaptive big load Piexoelectric actuator for pre-tightening function, belong to precision actuation field.Including pedestal, main preload module, compliant mechanism module, guide rail slide block module, output module, the main module that pre-tightens is used to provide the driving pretightning force between compliant mechanism module and output module, compliant mechanism module is for driving output module, guide rail slide block module is for realizing compliant mechanism module along the movement of output module normal direction, and output module is for carrying or connecting driving target.Advantage is: can quantitatively adjust driving pretightning force and piezoelectric stack pretightning force changes working performance, the driving as caused by manufacture, rigging error can be overcome to pre-tighten fluctuation, export reliable and stable straight line accurate displacement, and small in size, compact-sized, control is simply, can be applied to the fields such as micromanipulation, engineering in medicine, precision instrument.Load output is big, and impulse stroke depends on rail length, it can be achieved that big stroke.
Description
Technical field
It is the utility model relates to precision actuation field, in particular to a kind of with the big of quantitatively adjustable adaptive preload function
Load Piexoelectric actuator.It can be applied to the fields such as micromanipulation, engineering in medicine, precision instrument.
Background technique
Piezoelectric driving technology has high displacement accuracy, high power density, does without electromagnetism as a kind of novel driving method
It disturbs, the advantages that ultrahigh vacuum is compatible, is gradually applied in precise driving device, is particularly subject to micromanipulation, engineering in medicine, precision
The concern in the fields such as instrument.Most of Piexoelectric actuator is based on looper driving principle, stick-slip inertial drive principle and surpasses at present
Sound-driving principle, wherein stick-slip principle of inertia can realize the displacement of theory unlimited length, and can be by carrying out closed loop to displacement
Subnano-class positioning accuracy is realized in control, but its working performance is to the driving pretightning force between compliant mechanism module and output module
There are strict requirements with piezoelectric stack pretightning force, and its power output is smaller.Additionally, due to device meeting in manufacture and assembling process
Unavoidable error is generated, Piexoelectric actuator is made to generate the fluctuation of pretightning force during the work time, seriously affects piezoelectricity drive
The reliability of dynamic device output.Therefore design it is a kind of have can quantitatively adjust pretightning force, can be for manufacture, rigging error
Caused by preload fluctuation carry out automatic adjusument and can bear big load Piexoelectric actuator have it is important using with grind
Study carefully meaning.
Summary of the invention
The purpose of this utility model is to provide a kind of with the quantitatively adjustable adaptive big load piezoelectricity drive for pre-tightening function
Dynamic device, solves the above problem of the existing technology.The utility model uses the main preload module of integrated force snesor
With compliant mechanism module, the quantitative adjusting to driving pretightning force and piezoelectric stack pretightning force can be realized to be optimal workability
Can, wherein main preload module uses adaptive pad to solve to pre-tighten fluctuation caused by manufacture, rigging error；Compliant mechanism mould
Drive the flexible foot of the gradual change of compliant mechanism that can push and compress simultaneously the guide rail in output module to increase driving friction in block
Power, entire driving device are based on stick-slip inertial drive principle, can be realized reliable and stable big load linear motion.
The above-mentioned purpose of the utility model is achieved through the following technical solutions:
With quantitatively it is adjustable it is adaptive pre-tighten function big load Piexoelectric actuator, including pedestal 16, main preload module,
Compliant mechanism module, guide rail slide block module, output module, the main preload module are fixed on pedestal 16, compliant mechanism module
It is fixed in guide rail slide block module, guide rail slide block module, output module are separately fixed on pedestal 16.
The main preload module include main preload compliant mechanism 1, wedge block group A2, pre-loading screw A3, adaptive pad 4,
Force snesor A5, the main preload compliant mechanism 1 are fixed on pedestal 16 by screw；It is soft that the wedge block A2 is placed in main preload
Property mechanism 1 mounting groove in, during preload by the promotion of pre-loading screw A3 and to push be displaced carry out scale smaller, increase
After big resolution ratio, main preload compliant mechanism is pushed to generate deformation in the board-type position flexible hinge A1-1；The pre-loading screw A3
It is assemblied in the main threaded hole for pre-tightening compliant mechanism 1, itself translating rotation is pushed into wedge shape for linear motion during preload
Block group A2.
The adaptive pad 4 is placed between force snesor A5 and main preload compliant mechanism 1, is clamped during preload
Positioning by flexible deformation and is replied during the work time, is absorbed due to manufacture, rigging error and the preload fluctuation occurred；
The force snesor A5 is placed between adaptive pad 4 and main preload compliant mechanism 1, and embedded in pedestal 16 locating slot 16-1 in
Lateral sliding is avoided, for obtaining the driving pretightning force numerical value of main preload module offer in real time in order to quantitative adjusting.
The compliant mechanism module include driving compliant mechanism 6, wedge block group B7, pre-loading screw B8, force snesor B9,
Piezoelectric stack 10, the driving compliant mechanism 6 are fixed by screws on the connecting plate 13 of guide rail slide block module, and board-type is flexible
Hinge B6-1 can generate deformation under the promotion of wedge block group B7 and pre-tighten to piezoelectric stack 10, board-type flexible hinge
C6-2 is used to generate deformation when piezoelectric stack 10 extends and pushes gradual change flexibility foot 6-3 movement, and gradual change flexibility foot 6-3 passes through around straight
The sliding block 15 of round flexible hinge 6-4 rotation forces output module generates the deformation compressing perpendicular to pushing direction at the same time
Sliding block 15 increases pretightning force, and then increases driving frictional force and realize big load output.
The wedge block group B7 is placed in the mounting groove of driving compliant mechanism 6, by pre-loading screw during preload
The promotion of B8 and to push be displaced carry out scale smaller, increase resolution ratio after, push driving compliant mechanism 6 in board-type flexible hinge
The position chain B6-1 generates deformation；Pre-loading screw B8 is assemblied in the threaded hole of driving compliant mechanism 6, by itself during preload
Translating rotation is that linear motion pushes wedge block group B7；Force snesor B9 is placed in board-type flexible hinge B6-1 and piezoelectric stack 10
Between, for obtaining the numerical value of 10 pretightning force of piezoelectric stack in real time in order to quantitative adjusting；The piezoelectric stack 10 is placed in power biography
Sensor B9 and board-type flexible hinge C6-2, the power resources as driving device.
The guide rail slide block module includes guide rail group 11, sliding block group 12, connecting plate 13, and the guide rail group 11 passes through screw
It is mounted on pedestal 16, play the guiding role to sliding block group 12；The sliding block group 12 is mounted in guide rail group 11, is realized parallel straight
Line movement；The connecting plate 13 is mounted in sliding block group 12 by screw, for carrying compliant mechanism module along 11 side of guide rail group
To movement, to achieve the purpose that pre-tighten compliant mechanism module and output module.
The output module includes linear guide 14 and sliding block 15, and the linear guide 14 is mounted on pedestal by screw
On 16, it play the guiding role to sliding block 15；The sliding block 15 is installed in linear guide 14, directly carries or pass through threaded hole connection
Drive target.
The utility model has the beneficial effects that: novel, ingenious.The pretightning force that driving device can quantitatively be adjusted reaches
To optimal drive performance, it is accurate to export reliable and stable straight line to be able to solve preload fluctuation caused by manufacture, rigging error
Displacement, and small in size, compact-sized, control is simply, can be applied to the fields such as engineering in medicine, precision instrument, micromanipulation.This reality
Have many advantages, such as that load output is big, positioning accuracy is high with novel driving device, and can be realized the displacement output of big stroke.This reality
It is of great significance with the novel development for fields such as China's micromanipulations, in micromanipulation, engineering in medicine, precision instrument
Equal fields must have broad application prospects.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The illustrative example and its explanation of the utility model do not constitute the improper limit to the utility model for explaining the utility model
It is fixed.
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is the main preload module diagram of the utility model；
Fig. 3 is the compliant mechanism module diagram of the utility model；
Fig. 4 is the guide rail slide block module diagram of the utility model；
Fig. 5 is the base schematic diagram of the utility model.
1, main preload compliant mechanism；1-1, board-type flexible hinge A；2, wedge block group A；3, pre-loading screw A；4, adaptive
Pad；5, force snesor A；6, compliant mechanism is driven；6-1, board-type flexible hinge B；6-2, board-type flexible hinge C；6-3, gradually
Become flexible foot；6-4, straight round flexible hinge；7, wedge block group B；8, pre-loading screw B；9, force snesor B；10, piezoelectric stack；
11, guide rail group；12, sliding block group；13, connecting plate；14, linear guide；15, sliding block；16, pedestal；16-1, locating slot.
Specific embodiment
The detailed content and its specific embodiment of the utility model are further illustrated with reference to the accompanying drawing.
Referring to figs. 1 to 5, the utility model there is the quantitative adjustable adaptive big load piezoelectricity for pre-tightening function to drive
Dynamic device can quantitatively adjust driving pretightning force and piezoelectric stack pretightning force changes working performance, can overcome by manufacture, rigging error
Caused by driving pre-tighten fluctuation, export reliable and stable straight line accurate displacement, and it is small in size, compact-sized, control is simple, can
Applied to fields such as micromanipulation, engineering in medicine, precision instruments.Load output is big, and impulse stroke depends on rail length, can be real
Now big stroke.Including pedestal 16, main preload module, compliant mechanism module, guide rail slide block module, output module, the main preload
Module is fixed on pedestal 16, and compliant mechanism module is fixed in guide rail slide block module, guide rail slide block module, output module difference
It is fixed on pedestal 16.
Referring to shown in Fig. 1 and Fig. 2, main preload module described in the utility model is for providing compliant mechanism module and output
Driving pretightning force between module, including main preload compliant mechanism 1, wedge block group A2, pre-loading screw A3, adaptive pad 4, power pass
Sensor A5, the main preload compliant mechanism 1 are fixed on pedestal 16 by screw；The wedge block A2 is placed in main preload flexible machine
In the mounting groove of structure 1, scale smaller, increase point are carried out by the promotion of pre-loading screw A3 during preload and to pushing to be displaced
After resolution, main preload compliant mechanism 1 is pushed to generate deformation in the board-type position flexible hinge A1-1；The pre-loading screw A3 assembly
In the main threaded hole for pre-tightening compliant mechanism 1, itself translating rotation is pushed into wedge block group for linear motion during preload
A2。
The adaptive pad 4 is made of rubber or other elastic materials, is placed in force snesor A5 and main preload is soft
Property mechanism 1 between, during preload naturally be clamped positioning, during the work time by flexible deformation and reply, absorb by
In manufacture, rigging error and the preload fluctuation occurred；The force snesor A5 is placed in adaptive pad 4 and main preload compliant mechanism
Between 1, and to avoid lateral sliding in the locating slot 16-1 of pedestal 16, for obtaining the drive of main preload module offer in real time
Pretightning force numerical value is moved in order to quantitative adjusting, so that device be made to reach optimum working performance.
Referring to shown in Fig. 1 and Fig. 3, compliant mechanism module described in the utility model is for driving output module, including drive
Dynamic compliant mechanism 6, wedge block group B7, pre-loading screw B8, force snesor B9, piezoelectric stack 10, the driving compliant mechanism 6 pass through
Screw is fixed on the connecting plate 13 of guide rail slide block module, has pre-stressed portion similar with main preload compliant mechanism 1, board-type
Flexible hinge B6-1 can generate deformation under the promotion of wedge block group B7 and pre-tighten to piezoelectric stack 10, board-type flexible hinge
Chain C6-2 be used for piezoelectric stack 10 extend when generate deformation push gradual change flexibility foot 6-3 move, gradual change flexibility foot 6-3 by around
The sliding block 15 of straight round flexible hinge 6-4 rotation forces output module, generates the deformation pressure perpendicular to pushing direction at the same time
Compel sliding block 15 and increase pretightning force, and then increases driving frictional force and realize big load output.
The wedge block group B7 is placed in the mounting groove of driving compliant mechanism 6, by pre-loading screw during preload
The promotion of B8 and to push be displaced carry out scale smaller, increase resolution ratio after, push driving compliant mechanism 6 in board-type flexible hinge
The position chain B6-1 generates deformation；Pre-loading screw B8 is assemblied in the threaded hole of driving compliant mechanism 6, by itself during preload
Translating rotation is that linear motion pushes wedge block group B7；Force snesor B9 is placed in board-type flexible hinge B6-1 and piezoelectric stack 10
Between, for obtaining the numerical value of 10 pretightning force of piezoelectric stack in real time in order to quantitative adjusting, so that device be made to reach best effort
Performance；The piezoelectric stack 10 is placed in force snesor B9 and board-type flexible hinge C6-2, the power resources as driving device.
Referring to shown in Fig. 1 and Fig. 4, guide rail slide block module described in the utility model is for realizing compliant mechanism module along defeated
The movement of module normal direction out, including guide rail group 11, sliding block group 12, connecting plate 13, the guide rail group 11 are mounted on bottom by screw
On seat 16, it play the guiding role to sliding block group 12；The sliding block group 12 is mounted in guide rail group 11, realizes parallel linear motion；
The connecting plate 13 is mounted in sliding block group 12 by screw, is moved for carrying compliant mechanism module along 11 direction of guide rail group,
To achieve the purpose that pre-tighten compliant mechanism module and output module.
The output module is for carrying or connecting driving target, including linear guide 14 and sliding block 15, the straight line
Guide rail 14 is mounted on pedestal 16 by screw, is play the guiding role to sliding block 15；The sliding block 15 is installed in linear guide 14,
It directly carries or passes through threaded hole and connect driving target.
Referring to figs. 1 to 5, the specific work process of the utility model is as follows:
It drives pretightning force to quantify the realization of adjustable adaptation function between compliant mechanism module and output module: passing through rotation
Pre-loading screw A3 pushes wedge block group A2, and then pushes main preload compliant mechanism 1 that shape occurs at board-type flexible hinge A1-1
Become, it is final that compliant mechanism module compressing output module is pushed to generate driving pretightning force.And driving the numerical value of pretightning force can pass through
Force snesor A5 feedback, so as to quantitative adjusting driving pretightning force to obtain optimum working performance；Wherein adaptive pad 4 passes through
Elastic deformation and reply, which are absorbed, pre-tightens fluctuation as caused by production, rigging error, realizes that adaptive pretightning force is adjusted, protects
The reliable and stable output of card device.
The realization of the quantitative adjustable function of 10 pretightning force of piezoelectric stack: wedge block group is pushed by rotation pre-loading screw B8
B7, pushing driving compliant mechanism 6, deformation occurs at board-type flexible hinge B6-1, realizes the preload to piezoelectric stack 10.And
And the numerical value of 10 pretightning force of piezoelectric stack can be fed back by force snesor B9, so as to quantitative 10 pretightning force of adjusting piezoelectric stack
To obtain optimum working performance.
The realization of driving device straight-line displacement: to the driving pretightning force and pressure between compliant mechanism module and output module
Electricity stacks 10 pretightning forces and carries out after appropriately adjusting, and applies sawtooth wave to piezoelectric stack 10.When the time being in sawtooth wave rising edge,
Piezoelectric stack 10 elongation can push board-type flexible hinge C6-2 to generate deformation at a slow speed, and then push gradual change flexibility foot 6-3 around straight
Round flexible hinge 6-4 generates small rotary motion, pushes the sliding block 15 of output module；Sawtooth wave failing edge is in when the time
Be, piezoelectric stack 10 can rapid desufflation, driving compliant mechanism 6 also can under the action of natural resiliency Quick-return original state, and slide
Block 15 is since effect of inertia has little time that gradual change flexibility foot 6-3 is followed to return back to original position, to generate relative to original position microcosmic small
Displacement.By constantly repeating load sawtooth wave, driving device constantly accumulates microcosmic thin tail sheep and generates macroscopical big displacement.In addition,
By being displaced closed-loop control, the accurate control to microcosmic thin tail sheep also may be implemented and realize Subnano-class positioning accuracy.
The foregoing is merely the preferred embodiments of the utility model, are not intended to limit the utility model, for ability
For the technical staff in domain, various modifications and changes may be made to the present invention.It is all to made by the utility model it is any modification,
Equivalent replacement, improvement etc., should be included within the scope of protection of this utility model.
Claims (7)
1. a kind of with the quantitatively adjustable adaptive big load Piexoelectric actuator for pre-tightening function, it is characterised in that: including pedestal
(16), main preload module, compliant mechanism module, guide rail slide block module, output module, the main preload module are fixed on pedestal
(16) on, compliant mechanism module is fixed in guide rail slide block module, and guide rail slide block module, output module are separately fixed at pedestal
(16) on.
2. according to claim 1 have the quantitative adjustable adaptive big load Piexoelectric actuator for pre-tightening function, spy
Sign is: the main preload module includes main preload compliant mechanism (1), wedge block group A(2), pre-loading screw A(3), it is adaptive
Pad (4), force snesor A(5), the main preload compliant mechanism (1) is fixed on pedestal (16) by screw；The wedge block A
(2) it is placed in the main mounting groove for pre-tightening compliant mechanism (1), by the promotion of pre-loading screw A(3) and to promotion during preload
After displacement carries out scale smaller, increases resolution ratio, push main preload compliant mechanism in board-type flexible hinge A(1-1) position production
Raw deformation；The pre-loading screw A(3) it is assemblied in the main threaded hole for pre-tightening compliant mechanism (1), itself is revolved during preload
It walks around and turns to linear motion promotion wedge block group A(2).
3. according to claim 2 have the quantitative adjustable adaptive big load Piexoelectric actuator for pre-tightening function, spy
Sign is: the adaptive pad (4) is placed in force snesor A(5) and main preload compliant mechanism (1) between, during preload
It is clamped positioning, by flexible deformation and replys, is absorbed due to manufacture, rigging error and the pretightning force occurred during the work time
Fluctuation；The force snesor A(5) it is placed between adaptive pad (4) and main preload compliant mechanism (1), and embedded in pedestal (16)
To avoid lateral sliding in locating slot (16-1), for obtain in real time the driving pretightning force numerical value that main preload module provides in order to
Quantitative adjusting.
4. according to claim 1 have the quantitative adjustable adaptive big load Piexoelectric actuator for pre-tightening function, spy
Sign is: the compliant mechanism module include driving compliant mechanism (6), wedge block group B(7), pre-loading screw B(8), power sensing
Device B(9), piezoelectric stack (10), driving compliant mechanism (6) is fixed by screws in the connecting plate (13) of guide rail slide block module
On, board-type flexible hinge B(6-1) can be in wedge block group B(7) and promotion under generate deformation and piezoelectric stack (10) carried out pre-
Tightly, board-type flexible hinge C(6-2) flexible foot (6-3) movement of deformation promotion gradual change is generated when piezoelectric stack (10) extend, gradually
Become flexible foot (6-3) by the sliding block (15) around straight round flexible hinge (6-4) rotation forces output module, generates at the same time
Deformation compressing sliding block (15) perpendicular to pushing direction increases pretightning force, and then increases driving frictional force and realize big load output.
5. according to claim 4 have the quantitative adjustable adaptive big load Piexoelectric actuator for pre-tightening function, spy
Sign is: the wedge block group B(7) it is placed in the mounting groove of driving compliant mechanism (6), by preload spiral shell during preload
Follow closely B(8) promotion and to push be displaced carry out scale smaller, increase resolution ratio after, push driving compliant mechanism (6) in board-type
Flexible hinge B(6-1) position generation deformation；Pre-loading screw B(8) it is assemblied in the threaded hole of driving compliant mechanism (6), it is pre-tightening
It is in the process that linear motion pushes wedge block group B(7 by itself translating rotation)；Force snesor B(9) it is placed in board-type flexible hinge
B(6-1) between piezoelectric stack (10), for obtaining the numerical value of piezoelectric stack (10) pretightning force in real time in order to quantitative adjusting；
The piezoelectric stack (10) is placed in force snesor B(9) and board-type flexible hinge C(6-2), the power as driving device comes
Source.
6. according to claim 1 have the quantitative adjustable adaptive big load Piexoelectric actuator for pre-tightening function, spy
Sign is: the guide rail slide block module includes guide rail group (11), sliding block group (12), connecting plate (13), the guide rail group (11)
It is mounted on pedestal (16) by screw, is play the guiding role to sliding block group (12)；The sliding block group (12) is mounted on guide rail group
(11) on, parallel linear motion is realized；The connecting plate (13) is mounted on sliding block group (12) by screw, soft for carrying
Property mechanism module moved along guide rail group (11) direction, to achieve the purpose that pre-tighten compliant mechanism module and output module.
7. according to claim 1 have the quantitative adjustable adaptive big load Piexoelectric actuator for pre-tightening function, spy
Sign is: the output module includes linear guide (14) and sliding block (15), and the linear guide (14) is installed by screw
On pedestal (16), it play the guiding role to sliding block (15)；The sliding block (15) is installed on linear guide (14), directly carrying or
Driving target is connected by threaded hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821151817.9U CN208656663U (en) | 2018-07-20 | 2018-07-20 | With the quantitatively adjustable adaptive big load Piexoelectric actuator for pre-tightening function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821151817.9U CN208656663U (en) | 2018-07-20 | 2018-07-20 | With the quantitatively adjustable adaptive big load Piexoelectric actuator for pre-tightening function |
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| Publication Number | Publication Date |
|---|---|
| CN208656663U true CN208656663U (en) | 2019-03-26 |
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ID=65785863
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821151817.9U Withdrawn - After Issue CN208656663U (en) | 2018-07-20 | 2018-07-20 | With the quantitatively adjustable adaptive big load Piexoelectric actuator for pre-tightening function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109194191A (en) * | 2018-07-20 | 2019-01-11 | 吉林大学 | With the quantitatively adjustable adaptive big load Piexoelectric actuator for pre-tightening function |
| CN112713805A (en) * | 2020-12-22 | 2021-04-27 | 中国空气动力研究与发展中心设备设计及测试技术研究所 | Rotary driving device based on piezoelectric stack |
-
2018
- 2018-07-20 CN CN201821151817.9U patent/CN208656663U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109194191A (en) * | 2018-07-20 | 2019-01-11 | 吉林大学 | With the quantitatively adjustable adaptive big load Piexoelectric actuator for pre-tightening function |
| CN109194191B (en) * | 2018-07-20 | 2023-12-26 | 吉林大学 | Large-load piezoelectric driving device with quantitative adjustable self-adaptive pre-tightening function |
| CN112713805A (en) * | 2020-12-22 | 2021-04-27 | 中国空气动力研究与发展中心设备设计及测试技术研究所 | Rotary driving device based on piezoelectric stack |
| CN112713805B (en) * | 2020-12-22 | 2022-04-22 | 中国空气动力研究与发展中心设备设计及测试技术研究所 | Rotary driving device based on piezoelectric stack |
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