CN107959439A - A kind of bidirectional drive with compound foot bearing - Google Patents
A kind of bidirectional drive with compound foot bearing Download PDFInfo
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- CN107959439A CN107959439A CN201810029532.6A CN201810029532A CN107959439A CN 107959439 A CN107959439 A CN 107959439A CN 201810029532 A CN201810029532 A CN 201810029532A CN 107959439 A CN107959439 A CN 107959439A
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 12
- 150000001875 compounds Chemical class 0.000 title claims abstract description 11
- 210000002414 leg Anatomy 0.000 claims abstract description 82
- 210000001699 lower leg Anatomy 0.000 claims abstract description 81
- 239000000463 material Substances 0.000 claims abstract description 56
- 239000002783 friction material Substances 0.000 claims description 21
- 239000011159 matrix material Substances 0.000 claims description 4
- 238000005452 bending Methods 0.000 abstract description 10
- 125000004122 cyclic group Chemical group 0.000 abstract description 10
- 238000006073 displacement reaction Methods 0.000 abstract description 8
- 239000000919 ceramic Substances 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 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
- H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
- H02N2/021—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors using intermittent driving, e.g. step motors, piezoleg motors
-
- 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
- H02N2/0005—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing non-specific motion; Details common to machines covered by H02N2/02 - H02N2/16
- H02N2/005—Mechanical details, e.g. housings
- H02N2/0055—Supports for driving or driven bodies; Means for pressing driving body against driven body
-
- 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
- H02N2/0005—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing non-specific motion; Details common to machines covered by H02N2/02 - H02N2/16
- H02N2/005—Mechanical details, e.g. housings
- H02N2/0065—Friction interface
- H02N2/007—Materials
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- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The present invention relates to a kind of bidirectional drive with compound foot bearing, including：First piezoelectric vibrator, the second piezoelectric vibrator, the first support leg, the second support leg, the 3rd support leg, the first foot bearing, crus secunda bearing and three-leg support, wherein：Two piezoelectric vibrators connect, and support leg is arranged in piezoelectric vibrator lower surface, and foot bearing is connected to support leg free end.Apply alternating voltage respectively on two piezoelectric vibrator and bring it about cyclic bending deformation, drive wherein bipod bearing close to each other or remote, the material of different coefficients of friction is in contact with working face respectively on foot bearing, so that foot bearing produces different displacements, the displacement of driver is finally realized.The present invention realizes bi-directional drive, and has the advantages that the service life that simple in structure, maintenance cost is low, the requirement to working face is relatively low and extends piezoelectric ceramics in driver.
Description
Technical field
The invention belongs to Piezoelectric Driving field, and in particular to a kind of bidirectional drive with compound foot bearing.
Background technology
Traditional driver has the characteristics that impulse stroke is big, movement velocity is fast and bearing capacity is big, but legacy drive
Bulky and Motion Resolution rate is not high.It is contemporary with scientific technological advance, micromachine, accurate measurement and biologic medical are all
The requirement of higher is proposed to mini drive, it is desirable to which mini drive must realize small size and high accuracy.New micro drive
Dynamic device is mainly driven using marmem, magnetostriction materials, electrostriction material and piezoelectric ceramics.Wherein, press
Electric drive mini drive has the advantages that positioning accuracy height, fast response time, electromagnetism interference, small power consumption and driving force are big,
Existing piezoelectric actuator mainly has the driving of looper type and two class of inertial drive, but this two quasi-drivers structure is complex, more
It is high to operating environment requirements with working face rigid contact, component is easily lost and is not easy to replace.
The content of the invention
It is complex in order to solve current piezoelectric actuator structure, more with working face rigid contact, to operating environment requirements
Height, is easily lost the problem of component is not easy to replace, it is proposed that a kind of bidirectional drive with compound foot bearing, the bidirectional drive
By the first piezoelectric vibrator, the second piezoelectric vibrator, the first support leg, the second support leg and the 3rd support leg, the first foot bearing, second
Foot bearing and three-leg support composition；Wherein described first piezoelectric vibrator and the second piezoelectric vibrator are pasted onto by piezoelectric sheet material
Formed on Rectangular Elastic matrix, first piezoelectric vibrator is connected with the second piezoelectric vibrator, first support leg, the second support
Leg and the 3rd support leg is identical rectangular tab components and have certain elasticity, and described first support leg one end is arranged in the
One piezoelectric vibrator lower surface, the other end are free end, and described second support leg one end is connected to the first piezoelectric vibrator and the second pressure
Lower surface, the other end between electric tachometer indicator are free end, and described 3rd support leg one end is connected under second piezoelectric vibrator one end
Surface, the other end are free end, and the first foot bearing, crus secunda bearing and the three-leg support are all cylindrical member, described
First foot bearing is combined by the first low friction coefficient materials and the first high coefficient of friction material, and the crus secunda bearing is by two
Identical low friction coefficient materials are combined, and the three-leg support is identical with the first foot bearing size, structure and material, described
The free end of first support leg is connected with the first foot bearing and the first high coefficient of friction material of the first foot bearing is arranged in second
Support leg side, the free end of second support leg are connected with crus secunda bearing, the free end of the 3rd support leg and the
Three-leg support connects and the high coefficient of friction material of three-leg support is arranged in the second support leg side.Driver is placed on work
Make in plane, the first foot bearing, crus secunda bearing and the three-leg support are contacted with working face.In two piezoelectric vibrator
The upper alternating voltage that applies respectively brings it about cyclic bending deformation, drives wherein adjacent bipod bearing close to each other or mutually remote
From.In foot bearing moving process, foot bearing is subject to the frictional force opposite with moving direction, and frictional force makes foot bearing and support leg
Certain twisting occurs, promotes the material of different coefficients of friction on foot bearing to be in contact respectively with working face, so that foot bearing
Different displacements is produced, finally realizes the displacement of driver.Positive mobile working principle schematic such as Fig. 2 of the driver
It is shown：The driver crus secunda bearing and the left half-sections of three-leg support are respectively the second low friction coefficient materials and the 3rd
High coefficient of friction material, right half-sections are respectively the second low friction coefficient materials and the 3rd low friction coefficient materials, work as piezoelectricity
When oscillator is not powered on, driver is in nature, and support leg and foot bearing do not twist, as shown in Fig. 2 (a)；When the second pressure
When electric tachometer indicator energization produces concave change shape, drive crus secunda bearing and three-leg support to be located remotely from each other, work at the same time plane generation
Frictional force makes the support leg at the second piezoelectric vibrator both ends and foot bearing that certain twisting occur, and causes the of crus secunda bearing upper left side
The 3rd low friction coefficient materials on right side are contacted with working face on two low friction coefficient materials and three-leg support, at this time crus secunda
Bearing and three-leg support produce equal skidding distance, as shown in Fig. 2 (b)；When piezoelectric vibrator, which is powered, produces convex deformation, band
Dynamic crus secunda bearing and three-leg support are close to each other, and the direction that working face produces at this time changes, the second pressure
The support leg and foot bearing of electric tachometer indicator both sides produce certain opposite direction twisting respectively, cause second on the right side of crus secunda bearing low
The 3rd high coefficient of friction material on the left of friction coefficient material and three-leg support is contacted with working face, at this time crus secunda bearing
Skidding distance is significantly greater than the skidding distance of three-leg support, as shown in Fig. 2 (c)；When the second piezoelectric vibrator turns again to balance
A working cycles are completed during position, as shown in Fig. 2 (d).In a cycle of the second piezoelectric vibrator energization cyclic bending deformation
It is interior, drive crus secunda bearing and three-leg support to be located remotely from each other or close to each other, when crus secunda bearing and three-leg support are mutual
When remote, bipod bearing produces equal sliding, and when crus secunda bearing and three-leg support close to each other, crus secunda bearing
Larger sliding occurs, therefore a step-length to the right can be produced in a power cycles inner driver.In the second piezoelectric vibrator
It is subject under alternating voltage effect, which realizes positive stepper drive.The reverse movement operation principle signal of the driver
Figure is as shown in Figure 3：The left half-sections of driver the first foot bearing are respectively the first low friction coefficient materials, and right half-sections are
First high coefficient of friction material, when piezoelectric vibrator is not powered on, driver is in nature, and support leg and foot bearing are not turned round
It is dynamic, as shown in Fig. 3 (a)；When the first piezoelectric vibrator, which is powered, produces concave change shape, drive the first foot bearing and crus secunda bearing mutual
Remote, working at the same time the frictional force of plane generation makes the support leg at the first piezoelectric vibrator both ends and foot bearing that certain twisting occur,
Cause the second low-friction coefficient material on right side on the first low friction coefficient materials and crus secunda bearing of the first foot bearing upper left side
Material is contacted with working face, and the first foot bearing and crus secunda bearing produce equal skidding distance at this time, as shown in Fig. 3 (b)；Work as pressure
When electric tachometer indicator energization produces convex deformation, drive the first foot bearing and crus secunda bearing close to each other, working face produces at this time
Direction changes, and the support leg and foot bearing of the first piezoelectric vibrator both sides produce certain opposite direction twisting respectively,
Cause the first high coefficient of friction material on the right side of the first foot bearing and the second low friction coefficient materials on the left of crus secunda bearing with
Working face contacts, and the skidding distance of crus secunda bearing is significantly greater than the skidding distance of the first foot bearing at this time, as shown in Fig. 3 (c)；
A working cycles are completed when the first piezoelectric vibrator turns again to equilbrium position, as shown in Fig. 3 (d).In the first piezoelectric vibrator
In a cycle of energization cyclic bending deformation, the first foot bearing and crus secunda bearing is driven to be located remotely from each other or close to each other, when
When first foot bearing and crus secunda bearing are located remotely from each other, bipod bearing produces equal sliding, and when the first foot bearing and second
When foot bearing is close to each other, larger sliding occurs for crus secunda bearing, therefore can produce one in a power cycles inner driver
A step-length to the left.In the case where the first piezoelectric vibrator is subject to alternating voltage to act on, which realizes reverse stepper drive.Cause
This, when the second piezoelectric vibrator is subject to alternating voltage to act on, which realizes forward drive；When the first piezoelectric vibrator is handed over
When time variant voltage acts on, which realizes reverse drive.The present invention realizes bi-directional drive, and with it is simple in structure, safeguard into
The advantages of this low, to working face requirement is relatively low and extends the service life of piezoelectric ceramics in driver.
To achieve these goals, the present invention uses following technical scheme：
1. a kind of bidirectional drive with compound foot bearing of the present invention is by the first piezoelectric vibrator, the second piezoelectric vibrator, the
One support leg, the second support leg and the 3rd support leg, the first foot bearing, crus secunda bearing and three-leg support composition；Wherein institute
State the first piezoelectric vibrator and the second piezoelectric vibrator and be pasted onto by piezoelectric sheet material on Rectangular Elastic matrix and formed, first pressure
Electric tachometer indicator is connected with the second piezoelectric vibrator, and first support leg, the second support leg and the 3rd support leg are identical Thin Rectangular
Sheet element and there is certain elasticity, described first support leg one end is arranged in the first piezoelectric vibrator lower surface, the other end be from
By holding, described second support leg one end is connected to lower surface between the first piezoelectric vibrator and the second piezoelectric vibrator, the other end is
Free end, described 3rd support leg one end is connected to the second piezoelectric vibrator lower surface, the other end is free end, the first foot branch
Seat, crus secunda bearing and three-leg support all be cylindrical member, the first foot bearing by the first low friction coefficient materials with
First high coefficient of friction material is combined, and the crus secunda bearing is combined by two identical low friction coefficient materials, described
Three-leg support is identical with the first foot bearing size, structure and material, the free end of first support leg and the first foot bearing
First high coefficient of friction material of connection and the first foot bearing is arranged in the second support leg side, the freedom of second support leg
End is connected with crus secunda bearing, and the free end of the 3rd support leg is connected with three-leg support and the high friction of three-leg support
Coefficient material is arranged in the second support leg side.
During work, driver is placed on working face, the first foot bearing, crus secunda bearing and the three-leg support
Contacted with working face.Apply alternating voltage respectively on two piezoelectric vibrator and bring it about cyclic bending deformation, drive it
In adjacent bipod bearing it is close to each other or be located remotely from each other.In foot bearing moving process, foot bearing is subject to opposite with moving direction
Frictional force, frictional force makes foot bearing and support leg that certain twisting occur, promotes the material of different coefficients of friction on foot bearing
It is in contact respectively with working face, so that foot bearing produces different displacements, finally realizes the displacement of driver.The driving
The positive mobile working principle schematic of device is as shown in Figure 2：The left half of the driver crus secunda bearing and three-leg support
It is respectively the second low friction coefficient materials and the 3rd high coefficient of friction material, right half-sections are respectively the second low-friction coefficient
Material and the 3rd low friction coefficient materials, when piezoelectric vibrator is not powered on, driver is in nature, and support leg and foot bearing are not
Twist, as shown in Fig. 2 (a)；When the second piezoelectric vibrator, which is powered, produces concave change shape, crus secunda bearing and the 3rd foot branch are driven
Seat is located remotely from each other, and working at the same time the frictional force of plane generation makes the support leg at the second piezoelectric vibrator both ends and foot bearing occur necessarily
Twisting, causes the 3rd low friction system on right side on the second low friction coefficient materials and three-leg support of crus secunda bearing upper left side
Number material is contacted with working face, and crus secunda bearing and three-leg support produce equal skidding distance at this time, as shown in Fig. 2 (b)；
When piezoelectric vibrator, which is powered, produces convex deformation, drive crus secunda bearing and three-leg support close to each other, working face produces at this time
Raw direction changes, and the support leg and foot bearing of the second piezoelectric vibrator both sides produce certain opposite direction and turn round respectively
It is dynamic, cause the 3rd high coefficient of friction material on the left of the second low friction coefficient materials and the three-leg support on the right side of crus secunda bearing
Contacted with working face, the skidding distance of crus secunda bearing is significantly greater than the skidding distance of three-leg support at this time, such as Fig. 2 (c) institutes
Show；A working cycles are completed when the second piezoelectric vibrator turns again to equilbrium position, as shown in Fig. 2 (d).Shake in the second piezoelectricity
In a cycle of sub- energization cyclic bending deformation, drive crus secunda bearing and three-leg support be located remotely from each other or close to each other,
When crus secunda bearing and three-leg support are located remotely from each other, bipod bearing produces equal sliding, and when crus secunda bearing and the
When three-leg support is close to each other, larger sliding occurs for crus secunda bearing, therefore can be produced in a power cycles inner driver
One step-length to the right.In the case where the second piezoelectric vibrator is subject to alternating voltage to act on, which realizes positive stepper drive.Should
The reverse movement operation principle schematic diagram of driver is as shown in Figure 3：The left half-sections of driver the first foot bearing are respectively
One low friction coefficient materials, right half-sections are the first high coefficient of friction material, and when piezoelectric vibrator is not powered on, driver is in certainly
Right state, support leg and foot bearing do not twist, as shown in Fig. 3 (a)；When the first piezoelectric vibrator, which is powered, produces concave change shape,
The first foot bearing and crus secunda bearing is driven to be located remotely from each other, working at the same time the frictional force of plane generation makes the first piezoelectric vibrator both ends
Support leg and foot bearing certain twisting occurs, cause the first low friction coefficient materials and crus secunda of the first foot bearing upper left side
Second low friction coefficient materials on right side are contacted with working face on bearing, and the first foot bearing and crus secunda bearing produce equal at this time
Skidding distance, as shown in Fig. 3 (b)；When piezoelectric vibrator, which is powered, produces convex deformation, the first foot bearing and crus secunda bearing are driven
Close to each other, the direction that working face produces at this time changes, the support leg and foot branch of the first piezoelectric vibrator both sides
Seat produces certain opposite direction twisting respectively, causes the first high coefficient of friction material and crus secunda bearing on the right side of the first foot bearing
Second low friction coefficient materials in left side are contacted with working face, and the skidding distance of crus secunda bearing is significantly greater than the first foot branch at this time
The skidding distance of seat, as shown in Fig. 3 (c)；A working cycles are completed when the first piezoelectric vibrator turns again to equilbrium position, such as
Shown in Fig. 3 (d).In a cycle of the first piezoelectric vibrator energization cyclic bending deformation, the first foot bearing and crus secunda are driven
Bearing is located remotely from each other or close to each other, and when the first foot bearing and crus secunda bearing are located remotely from each other, bipod bearing produces equal
Sliding, and when the first foot bearing and crus secunda bearing close to each other, larger sliding occurs for crus secunda bearing, therefore at one
Power cycles inner driver can produce a step-length to the left.In the case where the first piezoelectric vibrator is subject to alternating voltage to act on, the driving
Device realizes reverse stepper drive.Therefore, when the second piezoelectric vibrator is subject to alternating voltage to act on, which realizes positive drive
It is dynamic；When the first piezoelectric vibrator is subject to alternating voltage to act on, which realizes reverse drive.The present invention realizes two-way drive
It is dynamic, and there is the use longevity that simple in structure, maintenance cost is low, the requirement to working face is relatively low and extends piezoelectric ceramics in driver
The advantages of life.
Brief description of the drawings
Fig. 1 is a kind of bidirectional drive structure diagram with compound foot bearing of the present invention.
Fig. 2 is a kind of bidirectional drive forward drive process schematic with compound foot bearing of the present invention.
Fig. 3 is a kind of bidirectional drive reverse drive process schematic with compound foot bearing of the present invention.
Embodiment
With reference to Fig. 1, Fig. 2 and Fig. 3, a kind of bidirectional drive with compound foot bearing of the present invention is by the first piezoelectric vibrator
1st, the second piezoelectric vibrator 2, the first support leg 3, the second support leg 4, the 3rd support leg 5, the first foot bearing 6,7 and of crus secunda bearing
Three-leg support 8 is formed, wherein：
2. 1 and second piezoelectric vibrator 2 of the first piezoelectric vibrator is pasted onto on Rectangular Elastic matrix by piezoelectric sheet material
Form, first piezoelectric vibrator 1 is connected with the second piezoelectric vibrator 2, first support leg 3, the second support leg 4 and the 3rd
Support leg 5 is identical rectangular tab component and has certain elasticity, and described first support leg, 3 one end is arranged in the first piezoelectricity and shakes
Sub 1 lower surface, the other end are free end, and described second support leg, 4 one end is connected to the first piezoelectric vibrator 1 and the second piezoelectric vibrator
Lower surface, the other end between 2 are free end, and described 3rd support leg, 5 one end is connected to 2 lower surface of the second piezoelectric vibrator, another
One end is free end, and the first foot bearing 6, crus secunda bearing 7 and the three-leg support 8 are all cylindrical member, described first
Foot bearing 6 is combined by the first low friction coefficient materials 61 and the first high coefficient of friction material 62, the crus secunda bearing 7 by
Two identical low friction coefficient materials 71 are combined, the three-leg support 8 and 6 size of the first foot bearing, structure and material phase
Together, the free end of first support leg 3 is connected and the first high coefficient of friction material of the first foot bearing 6 with the first foot bearing 6
62 are arranged in 4 side of the second support leg, and the free end of second support leg 4 is connected with crus secunda bearing 7, the 3rd support
The free end of leg 5 is connected with three-leg support 8 and the 3rd high coefficient of friction material 81 of three-leg support 8 is arranged in the second support
4 side of leg.
During work, driver is placed on working face, the first foot bearing, crus secunda bearing and the three-leg support
Contacted with working face.Apply alternating voltage respectively on two piezoelectric vibrator and bring it about cyclic bending deformation, drive it
In adjacent bipod bearing it is close to each other or be located remotely from each other.In foot bearing moving process, foot bearing is subject to opposite with moving direction
Frictional force, frictional force makes foot bearing and support leg that certain twisting occur, promotes the material of different coefficients of friction on foot bearing
It is in contact respectively with working face, so that foot bearing produces different displacements, finally realizes the displacement of driver.The driving
The positive mobile working principle schematic of device is as shown in Figure 2：The left half of the driver crus secunda bearing and three-leg support
It is respectively the second low friction coefficient materials and the 3rd high coefficient of friction material, right half-sections are respectively the second low-friction coefficient
Material and the 3rd low friction coefficient materials, when piezoelectric vibrator is not powered on, driver is in nature, and support leg and foot bearing are not
Twist, as shown in Fig. 2 (a)；When the second piezoelectric vibrator, which is powered, produces concave change shape, crus secunda bearing and the 3rd foot branch are driven
Seat is located remotely from each other, and working at the same time the frictional force of plane generation makes the support leg at the second piezoelectric vibrator both ends and foot bearing occur necessarily
Twisting, causes the 3rd low friction system on right side on the second low friction coefficient materials and three-leg support of crus secunda bearing upper left side
Number material is contacted with working face, and crus secunda bearing and three-leg support produce equal skidding distance at this time, as shown in Fig. 2 (b)；
When piezoelectric vibrator, which is powered, produces convex deformation, drive crus secunda bearing and three-leg support close to each other, working face produces at this time
Raw direction changes, and the support leg and foot bearing of the second piezoelectric vibrator both sides produce certain opposite direction and turn round respectively
It is dynamic, cause the 3rd high coefficient of friction material on the left of the second low friction coefficient materials and the three-leg support on the right side of crus secunda bearing
Contacted with working face, the skidding distance of crus secunda bearing is significantly greater than the skidding distance of three-leg support at this time, such as Fig. 2 (c) institutes
Show；A working cycles are completed when the second piezoelectric vibrator turns again to equilbrium position, as shown in Fig. 2 (d).Shake in the second piezoelectricity
In a cycle of sub- energization cyclic bending deformation, drive crus secunda bearing and three-leg support be located remotely from each other or close to each other,
When crus secunda bearing and three-leg support are located remotely from each other, bipod bearing produces equal sliding, and when crus secunda bearing and the
When three-leg support is close to each other, larger sliding occurs for crus secunda bearing, therefore can be produced in a power cycles inner driver
One step-length to the right.In the case where the second piezoelectric vibrator is subject to alternating voltage to act on, which realizes positive stepper drive.Should
The reverse movement operation principle schematic diagram of driver is as shown in Figure 3：The left half-sections of driver the first foot bearing are respectively
One low friction coefficient materials, right half-sections are the first high coefficient of friction material, and when piezoelectric vibrator is not powered on, driver is in certainly
Right state, support leg and foot bearing do not twist, as shown in Fig. 3 (a)；When the first piezoelectric vibrator, which is powered, produces concave change shape,
The first foot bearing and crus secunda bearing is driven to be located remotely from each other, working at the same time the frictional force of plane generation makes the first piezoelectric vibrator both ends
Support leg and foot bearing certain twisting occurs, cause the first low friction coefficient materials and crus secunda of the first foot bearing upper left side
Second low friction coefficient materials on right side are contacted with working face on bearing, and the first foot bearing and crus secunda bearing produce equal at this time
Skidding distance, as shown in Fig. 3 (b)；When piezoelectric vibrator, which is powered, produces convex deformation, the first foot bearing and crus secunda bearing are driven
Close to each other, the direction that working face produces at this time changes, the support leg and foot branch of the first piezoelectric vibrator both sides
Seat produces certain opposite direction twisting respectively, causes the first high coefficient of friction material and crus secunda bearing on the right side of the first foot bearing
Second low friction coefficient materials in left side are contacted with working face, and the skidding distance of crus secunda bearing is significantly greater than the first foot branch at this time
The skidding distance of seat, as shown in Fig. 3 (c)；A working cycles are completed when the first piezoelectric vibrator turns again to equilbrium position, such as
Shown in Fig. 3 (d).In a cycle of the first piezoelectric vibrator energization cyclic bending deformation, the first foot bearing and crus secunda are driven
Bearing is located remotely from each other or close to each other, and when the first foot bearing and crus secunda bearing are located remotely from each other, bipod bearing produces equal
Sliding, and when the first foot bearing and crus secunda bearing close to each other, larger sliding occurs for crus secunda bearing, therefore at one
Power cycles inner driver can produce a step-length to the left.In the case where the first piezoelectric vibrator is subject to alternating voltage to act on, the driving
Device realizes reverse stepper drive.Therefore, when the second piezoelectric vibrator is subject to alternating voltage to act on, which realizes positive drive
It is dynamic；When the first piezoelectric vibrator is subject to alternating voltage to act on, which realizes reverse drive.The present invention realizes two-way drive
It is dynamic, and there is the use longevity that simple in structure, maintenance cost is low, the requirement to working face is relatively low and extends piezoelectric ceramics in driver
The advantages of life.
Claims (1)
1. a kind of bidirectional drive with compound foot bearing, including：First piezoelectric vibrator (1), the second piezoelectric vibrator (2),
One support leg (3), the second support leg (4) and the 3rd support leg (5), it is characterised in that further include the first foot for realizing bi-directional drive
Bearing (6), crus secunda bearing (7) and three-leg support (8)；Wherein described first piezoelectric vibrator (1) and the second piezoelectric vibrator (2)
It is pasted onto on Rectangular Elastic matrix and is formed by piezoelectric sheet material, first piezoelectric vibrator (1) connects with the second piezoelectric vibrator (2)
Connect, first support leg (3), the second support leg (4) and the 3rd support leg (5) are for identical rectangular tab component and with one
Fixed elasticity, described first support leg (3) one end is arranged in the first piezoelectric vibrator (1) lower surface, the other end is free end, described
Second support leg (4) one end is connected to lower surface between the first piezoelectric vibrator (1) and the second piezoelectric vibrator (2), the other end is
Free end, described 3rd support leg (5) one end is connected to the second piezoelectric vibrator (2) one end lower surface, the other end is free end, institute
It is all cylindrical member to state the first foot bearing (6), crus secunda bearing (7) and three-leg support (8), the first foot bearing (6)
Be combined by the first low friction coefficient materials (61) and the first high coefficient of friction material (62), the crus secunda bearing (7) by
Two identical low friction coefficient materials (71) are combined, the three-leg support (8) and first foot bearing (6) size, structure and
Material identical, the free end of first support leg (3) is connected with the first foot bearing (6) and the first of the first foot bearing (6) is high
Friction coefficient material (62) is arranged in the second support leg (4) side, free end and the crus secunda bearing of second support leg (4)
(7) connect, the free end of the 3rd support leg (5) is connected with three-leg support (8) and the 3rd height of three-leg support (8) rubs
Wipe coefficient material (81) and be arranged in the second support leg (4) side.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810029532.6A CN107959439A (en) | 2018-01-12 | 2018-01-12 | A kind of bidirectional drive with compound foot bearing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810029532.6A CN107959439A (en) | 2018-01-12 | 2018-01-12 | A kind of bidirectional drive with compound foot bearing |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871248A (en) * | 2016-06-12 | 2016-08-17 | 吉林大学 | Directional driver with composite foot support seat |
| CN207743899U (en) * | 2018-01-12 | 2018-08-17 | 吉林大学 | A kind of bidirectional drive with compound foot bearing |
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2018
- 2018-01-12 CN CN201810029532.6A patent/CN107959439A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871248A (en) * | 2016-06-12 | 2016-08-17 | 吉林大学 | Directional driver with composite foot support seat |
| CN207743899U (en) * | 2018-01-12 | 2018-08-17 | 吉林大学 | A kind of bidirectional drive with compound foot bearing |
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Application publication date: 20180424 |