CN109768732A - A kind of stepping type piezoelectricity straight line driver twice - Google Patents
A kind of stepping type piezoelectricity straight line driver twice Download PDFInfo
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- CN109768732A CN109768732A CN201910090830.0A CN201910090830A CN109768732A CN 109768732 A CN109768732 A CN 109768732A CN 201910090830 A CN201910090830 A CN 201910090830A CN 109768732 A CN109768732 A CN 109768732A
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- flexible hinge
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 12
- 230000008602 contraction Effects 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 10
- 238000004904 shortening Methods 0.000 claims 2
- 239000007787 solid Substances 0.000 claims 1
- 230000005611 electricity Effects 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
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Abstract
The present invention relates to a kind of stepping type piezoelectricity straight line drivers twice, including hold-down support (1), reply flexible hinge (2), piezoelectric stack (3), driving platform (4), parallelogram flexible hinge a (5), parallelogram flexible hinge b (6), platform driving plate (7), triangle microprotrusion (8), pedestal (9), guide rail (10) and mobile platform (11).At parallelogram flexible hinge a (5), b (6) and triangle microprotrusion (8) collective effect, electric signal motivated in a duty cycle of the extension/contraction of piezoelectric stack (3), platform driving plate (7) is alternately by parallelogram flexible hinge a (5)/b (6) driving, it realizes moving twice for the mobile platform (11) integrally assembled with platform driving plate (7), improves the delivery efficiency of driver.
Description
Technical field
The present invention relates to a kind of stepping type piezoelectricity straight line drivers twice, belong to micro-nano precision actuation technical field.
Background technique
Along with the fast development in the fields such as precision and ultra-precision machining, electronics, biotechnology, accurate measurement, to micro-nano
Rice precision actuation technology requirement it is higher and higher, each research institution also actively to big stroke, high-precision piezoelectric actuator into
Row research.In existing big stroke, high-precision piezoelectric actuator, driving process can be usually divided into the piezoelectric stack elongation stage
With piezoelectric stack retraction stage, realized using the slow elongation of piezoelectric stack and snapback.In the process, pressure can only be passed through
Electricity stacks the elongation stage and realizes that driver rotates in the forward direction driving, and piezoelectric stack retraction stage can not be such that driver rotates in the forward direction,
Can even driver be made to retract, greatly reduce the delivery efficiency of driver.
Summary of the invention
In order to realize big stroke, it is high-precision improve the delivery efficiency of driver simultaneously, the present invention disclose it is a kind of twice
Stepping type piezoelectricity straight line driver.
The invention is realized by the following technical scheme: in one cycle, replying flexible hinge only with a piezoelectric stack
Chain can be realized to be moved twice；Specific structure includes hold-down support, replys flexible hinge, piezoelectric stack, driving platform, parallel four
Side shape flexible hinge a, parallelogram flexible hinge b, platform driving plate, triangle microprotrusion, pedestal, guide rail and movement are flat
Platform；Piezoelectric stack, which is snugly embedded in, replys in flexible hinge, and hold-down support replys flexible hinge and driving platform
It is integrally machined, and is fixed on the base by hold-down support, pedestal and guide rail are integrally machined, and driving platform driving plate can make and put down
The mobile platform that platform driving plate is integrally assembled slides on guide rail；Parallel four side of the changeable normal pressure between platform driving plate
Shape flexible hinge a, b are arranged symmetrically the two sides with platform driving plate, and parallelogram flexible hinge a, b are arranged at driving platform
On, and tilted to X-axis negative direction；Coefficient of friction different triangle microprotrusion when moving mobile platform along X-axis forward direction, negative sense
It is set on parallelogram flexible hinge a, b and the contact surface of platform driving plate；In parallelogram flexible hinge a, b and three
Under angular microprotrusion collective effect, electric signal was motivated in a duty cycle of the extension/contraction of piezoelectric stack, platform driving plate
It is alternately driven by parallelogram flexible hinge a/b, realizes the shifting twice of the mobile platform integrally assembled with platform driving plate
It is dynamic.
Parallelogram flexible hinge a, b driven platform driving plate is mobile in one cycle, realizes platform drive
Movable plate moves twice；In piezoelectric stack elongation process, platform driving plate is by parallelogram flexible hinge a along X-axis losing side
To frictional force make platform driving plate along X-axis losing side greater than the frictional force of the X positive direction by parallelogram flexible hinge b
To mobile L1；During piezoelectric stack shortens, platform driving plate is rubbed by parallelogram flexible hinge b along X-axis negative direction
Wiping power moves platform driving plate along X-axis negative direction greater than the frictional force of the X positive direction by parallelogram flexible hinge a
L2 completes moving in the mobile platform a cycle integrally assembled with platform driving plate twice.
In the piezoelectric stack elongation process, driving platform is moved along Y-axis negative direction, is moved along X-axis negative direction flat
The normal pressure of row quadrangle flexible hinge a and platform driving plate is greater than the parallelogram flexible hinge b moved along X-axis positive direction
With the normal pressure of platform driving plate, resulting frictional force drives platform driving plate is along X-axis negative movement；Piezoelectric stack shortens
In the process, replying flexible hinge pulls driving platform to move along Y-axis positive direction, and the parallelogram moved along X-axis negative direction is soft
Property hinge b and the normal pressure of platform driving plate be greater than the parallelogram flexible hinge a moved along X-axis positive direction and platform drives
The normal pressure of plate, resulting frictional force drives platform driving plate continue along X-axis negative movement.
It is non-central right that the surface parallelogram flexible hinge a, b is provided with triangle microprotrusion triangle microprotrusion
Claim shape, inclined direction is consistent with parallelogram flexible hinge inclined direction, makes the coefficient of friction for being inclined to side and normal pressure all
Greater than the other side；The triangle microprotrusion of the described platform driving plate surfaces externally and internally setting respectively with parallelogram flexible hinge
A and the triangle microprotrusion of the parallelogram surface flexible hinge b setting are worked in coordination；During piezoelectric stack extension/contraction,
Platform driving plate is alternately driven by parallelogram flexible hinge a/ parallelogram flexible hinge b, and realization is moved twice.
The beneficial effects of the present invention are: making mobile platform generate two using a piezoelectric stack within the one action period
Secondary movement improves the delivery efficiency of driver.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative example and its explanation is used to explain the present invention, and is not constituted improper limitations of the present invention.
Fig. 1 show overall structure diagram of the invention；
Fig. 2 show parallelogram flexible hinge of the invention and combines axonometric drawing with platform driving plate；
Fig. 3 show the working principle of the invention figure；
Fig. 4 show triangle dimpling between parallelogram flexible hinge a and platform driving plate contact surface of the invention
Play enlarged drawing；
Fig. 5 show triangle dimpling between parallelogram flexible hinge b and platform driving plate contact surface of the invention
Play enlarged drawing.
Specific embodiment
Detailed content and its specific embodiment of the invention are further illustrated with reference to the accompanying drawing.
Referring to figs. 1 to 5, present embodiment provides a kind of specific implementation of stepping type piezoelectricity straight line driver twice
Scheme.Structure includes hold-down support (1), replys flexible hinge (2), piezoelectric stack (3), drives platform (4), parallelogram soft
Property hinge a (5), parallelogram flexible hinge b (6), platform driving plate (7), triangle microprotrusion (8), pedestal (9), guide rail
(10) and mobile platform (11)；Piezoelectric stack (3), which is snugly embedded in, replys in flexible hinge (2), hold-down support
(1), flexible hinge (2) are replied and driving platform (4) is integrally machined, and are fixed on pedestal (9) by hold-down support (1),
Pedestal (9) and guide rail (10) are integrally machined, and driving platform driving plate (7) can make the movement integrally assembled with platform driving plate (7)
Platform (11) slides on guide rail (10)；The parallelogram flexible hinge a of the changeable normal pressure between platform driving plate (7)
(5), b (6) is arranged symmetrically the two sides with platform driving plate (7), and parallelogram flexible hinge a (5), b (6) are arranged at driving
On platform (4), and tilted to X-axis negative direction；Coefficient of friction is different when moving mobile platform (11) along X-axis forward direction, negative sense
Triangle microprotrusion (8) is set on parallelogram flexible hinge a (5), b (6) and the contact surface of platform driving plate (7)；?
Under parallelogram flexible hinge a (5), b (6) and triangle microprotrusion (8) collective effect, electric signal motivates piezoelectric stack (3)
Extension/contraction a duty cycle in, platform driving plate (7) alternately by parallelogram flexible hinge a (5)/b (6)
Moving twice for the mobile platform (11) integrally assembled with platform driving plate (7) is realized in driving.
Parallelogram flexible hinge a (5), b (6) driven platform driving plate (7) are mobile in one cycle, realize
The moving twice of platform driving plate (7)；In piezoelectric stack (3) elongation process, platform driving plate (7) is soft by parallelogram
Property hinge a (5) along X-axis negative direction frictional force, be greater than by parallelogram flexible hinge b (6) X positive direction friction
Power makes platform driving plate (7) move L1 along X-axis negative direction；During piezoelectric stack (3) shortens, platform driving plate (7) is by flat
Row quadrangle flexible hinge b (6) is greater than square by the X of parallelogram flexible hinge a (5) along the frictional force of X-axis negative direction
To frictional force, so that platform driving plate (7) is moved L2 along X-axis negative direction, complete the movement integrally assembled with platform driving plate (7)
Moving in platform (11) a cycle twice.
In piezoelectric stack (3) elongation process, driving platform (4) is moved along Y-axis negative direction, is moved along X-axis negative direction flat
It is soft that the normal pressure of row quadrangle flexible hinge a (5) and platform driving plate (7) is greater than the parallelogram moved along X-axis positive direction
The normal pressure of property hinge b (6) and platform driving plate (7), resulting frictional force drives platform driving plate (7) is along X-axis negative sense
Movement；During piezoelectric stack (3) shortens, replys flexible hinge (2) and driving platform (4) is pulled to move along Y-axis positive direction, along X
The normal pressure of the mobile parallelogram flexible hinge b (6) of axis negative direction and platform driving plate (7) is greater than transports along X-axis positive direction
The normal pressure of dynamic parallelogram flexible hinge a (5) and platform driving plate (7), resulting frictional force drives platform drive
Movable plate (7) continues along X-axis negative movement.
Parallelogram flexible hinge a (5), that b (6) surface is provided with triangle microprotrusion (8) triangle microprotrusion (8) is non-
Centrically symmetric shape, inclined direction is consistent with parallelogram flexible hinge inclined direction, makes the coefficient of friction and just for being inclined to side
Pressure is both greater than the other side；The triangle microprotrusion (8) of described platform driving plate (7) the surfaces externally and internally setting is respectively with parallel four
Side shape flexible hinge a (5) and the triangle microprotrusion (8) of (6) surface parallelogram flexible hinge b setting are worked in coordination；Pressure
During electricity stacks (3) extension/contraction, platform driving plate (7) is alternately by parallelogram flexible hinge a (5)/parallel four side
Shape flexible hinge b (6) driving, realization are moved twice.
Claims (4)
1. a kind of stepping type piezoelectricity straight line driver twice, it is characterised in that: in one cycle, only with a piezoelectric stack
Reply flexible hinge can be realized to be moved twice；Specific structure includes hold-down support (1), replys flexible hinge (2), piezoelectric stack
(3), drive platform (4), parallelogram flexible hinge a (5), parallelogram flexible hinge b (6), platform driving plate (7),
Triangle microprotrusion (8), pedestal (9), guide rail (10) and mobile platform (11)；Piezoelectric stack (3) is snugly embedded in
It replys in flexible hinge (2), hold-down support (1) replys flexible hinge (2) and platform (4) is driven to be integrally machined, and by solid
Determine support (1) to be fixed on pedestal (9), pedestal (9) and guide rail (10) are integrally machined, and driving platform driving plate (7) can make and put down
The mobile platform (11) that platform driving plate (7) is integrally assembled slides on guide rail (10)；It can be changed between platform driving plate (7) just
Parallelogram flexible hinge a (5), the b (6) of pressure are arranged symmetrically the two sides with platform driving plate (7), and parallelogram is flexible
Hinge a (5), b (6) are arranged in driving platform (4), and are tilted to X-axis negative direction；Make mobile platform (11) it is positive along X-axis,
The different triangle microprotrusion (8) of coefficient of friction is set to parallelogram flexible hinge a (5), b (6) and puts down when negative sense is mobile
On the contact surface of platform driving plate (7)；In parallelogram flexible hinge a (5), b (6) and triangle microprotrusion (8) collective effect
Under, electric signal motivated in a duty cycle of the extension/contraction of piezoelectric stack (3), and platform driving plate (7) is alternately by parallel
Quadrangle flexible hinge a (5)/b (6) driving, realizes the shifting twice of the mobile platform (11) integrally assembled with platform driving plate (7)
It is dynamic.
2. a kind of stepping type piezoelectricity straight line driver twice according to claim 1, it is characterised in that: in one cycle
Parallelogram flexible hinge a (5), b (6) driven platform driving plate (7) are mobile, realize the two of platform driving plate (7)
Secondary movement；In piezoelectric stack (3) elongation process, platform driving plate (7) is by parallelogram flexible hinge a (5) along X-axis losing side
To frictional force, be greater than by parallelogram flexible hinge b (6) X positive direction frictional force, make platform driving plate (7) along X
Axis negative direction moves L1；During piezoelectric stack (3) shortens, platform driving plate (7) is by parallelogram flexible hinge b (6)
Along the frictional force of X-axis negative direction, it is greater than the frictional force of the X positive direction by parallelogram flexible hinge a (5), drives platform
Movable plate (7) moves L2 along X-axis negative direction, completes in mobile platform (11) a cycle integrally assembled with platform driving plate (7)
Move twice.
3. a kind of stepping type piezoelectricity straight line driver twice according to claim 1, it is characterised in that: the piezo stack
In heap (3) elongation process, driving platform (4) is moved along Y-axis negative direction, the parallelogram flexible hinge moved along X-axis negative direction
The normal pressure of chain a (5) and platform driving plate (7) is greater than the parallelogram flexible hinge b (6) moved along X-axis positive direction and puts down
The normal pressure of platform driving plate (7), resulting frictional force drives platform driving plate (7) is along X-axis negative movement；Piezoelectric stack
(3) during shortening, flexible hinge (2) are replied, driving platform (4) is pulled to move along Y-axis positive direction, moved along X-axis negative direction
The normal pressure of parallelogram flexible hinge b (6) and platform driving plate (7) is greater than the parallelogram moved along X-axis positive direction
The normal pressure of flexible hinge a (5) and platform driving plate (7), resulting frictional force drives platform driving plate (7) are continued along X
Axis negative movement.
4. a kind of stepping type piezoelectricity straight line driver twice according to claim 1, it is characterised in that: described parallel four
Side shape flexible hinge a (5), b (6) surface are provided with triangle microprotrusion (8) triangle microprotrusion (8) non-centrosymmetry shape,
Inclined direction is consistent with parallelogram flexible hinge inclined direction, keeps the coefficient of friction for being inclined to side and normal pressure both greater than another
Side；The triangle microprotrusion (8) of described platform driving plate (7) the surfaces externally and internally setting respectively with parallelogram flexible hinge a
(5) it works in coordination with the triangle microprotrusion (8) of (6) surface parallelogram flexible hinge b setting；Piezoelectric stack (3) elongation/
During shortening, platform driving plate (7) is alternately by parallelogram flexible hinge a (5)/parallelogram flexible hinge b (6)
Driving, realization are moved twice.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910090830.0A CN109768732B (en) | 2019-01-30 | 2019-01-30 | Twice stepping piezoelectric linear driver |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910090830.0A CN109768732B (en) | 2019-01-30 | 2019-01-30 | Twice stepping piezoelectric linear driver |
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| CN109768732B CN109768732B (en) | 2023-11-03 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361411A (en) * | 2011-10-25 | 2012-02-22 | 哈尔滨工业大学深圳研究生院 | Piezoelectric linear driver |
| CN203813694U (en) * | 2014-04-22 | 2014-09-03 | 长安大学 | Stepping type precise piezoelectric linear actuator |
| CN104753392A (en) * | 2015-04-09 | 2015-07-01 | 南京航空航天大学 | Linear motion piezoelectric actuator |
| CN104753391A (en) * | 2015-03-06 | 2015-07-01 | 吉林大学 | Piezoelectric driving/locking reciprocating step driving platform and method |
-
2019
- 2019-01-30 CN CN201910090830.0A patent/CN109768732B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102361411A (en) * | 2011-10-25 | 2012-02-22 | 哈尔滨工业大学深圳研究生院 | Piezoelectric linear driver |
| CN203813694U (en) * | 2014-04-22 | 2014-09-03 | 长安大学 | Stepping type precise piezoelectric linear actuator |
| CN104753391A (en) * | 2015-03-06 | 2015-07-01 | 吉林大学 | Piezoelectric driving/locking reciprocating step driving platform and method |
| CN104753392A (en) * | 2015-04-09 | 2015-07-01 | 南京航空航天大学 | Linear motion piezoelectric actuator |
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| CN109768732B (en) | 2023-11-03 |
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