CN209299161U - A kind of cantilever type piezoelectric linear actuator of magnetic rheologic magnetic coupling tune friction - Google Patents
A kind of cantilever type piezoelectric linear actuator of magnetic rheologic magnetic coupling tune friction Download PDFInfo
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- CN209299161U CN209299161U CN201821707404.4U CN201821707404U CN209299161U CN 209299161 U CN209299161 U CN 209299161U CN 201821707404 U CN201821707404 U CN 201821707404U CN 209299161 U CN209299161 U CN 209299161U
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Abstract
The utility model relates to a kind of cantilever type piezoelectric linear actuators of magnetic rheologic magnetic coupling tune friction, belong to Precision Piezoelectric actuation techniques field.Affixed long grip block in the middle part of movable body, there are two piezoelectric vibrators on long grip block, are fixedly connected by short grip block with screw, bottom fixed installation frictional disk, frictional disk is dipped in magnetorheological fluid；Movable body two sides are linear guide, and linear guide is fixedly mounted on both side plate, and side plate is fixedly mounted on pedestal, and the electromagnetic coil for having magnetic conductive shell is placed on pedestal, and middle part seals to form the cavity for placing magnetorheological fluid with diaphragm seal and sealing strip.Advantage is: coupling the frictional force adjustment for realizing driver with electromagnetic coil using magnetorheological fluid, reduces traditional fretting wear, improve precision and the service life of driver.
Description
Technical field
The utility model belongs to small, precision actuation field.
Background technique
In recent years, with the rapid development of micro-nano actuation techniques, biomedicine, precision machinery, bio-robot, from
Dynamic control, accurate measurement, driving requirement of the technical fields such as accurate operation, accurate device, Ultra-precision Turning to microminiature machinery
Increase year by year.The other actuation techniques of micro/nano level have become domestic and international scientific research machine as the core technology for exploring microscopic fields
Structure, scholar research hotspot.Traditional precision machinery driving method generally uses mechanical structure formula, such as the silk in fine turning lathe
Bar pair and rolling, slide rail, precision auger cotter mechanism etc., the even mechanical structure of superhigh precision, still can not keep away
Exempt from there are fit-up gap, fretting wear, creep phenomena such as, therefore traditional mechanical structure formula driver is difficult to promote precision level,
Under this form, many novel driving methods are developed, such as electrostatic attraction, electromagnetic attraction formula, magnetostriction type, shape
Shape memory alloys formula and piezoelectric type etc..Piezoelectric ceramics is a kind of intellectual material for being widely used in precision actuation field, is had
Low energy consumption, without electromagnetic interference, fast response time the advantages that, be that the driver of driving element becomes accurate in recent years using piezoelectric material
One important branch of drive area.
Precision Piezoelectric driving device is widely studied and applies in recent years.Piezoelectric actuator can divide according to driving principle
Are as follows: Direct Action Type piezoelectric actuator, Inchworm type piezoelectric actuator, ultrasonic type piezoelectric actuator and inertia-type piezoelectric actuator.Inertia
Piezoelectric actuator is that the inertial impact force for generating inertial mass and piezoelectric element collective effect is filled as the driving of driving force
It sets, mechanical structure is simple, and movement velocity is very fast, and the driving motion mode of formation is easily controllable, and can obtain big stroke
Continuous movement, can be always the hot spot studied both at home and abroad with steady operation in high frequency state.
The working mechanism majority for the inertial piezoelectric driver developed at present be by it is automatically controlled or change mechanical structure or
Capable difference driving movement, to obtain the driving movement of power difference using frictional force control mode, the research work of early stage is mainly minority
Generating different inertial impact forces by electric signal makes mechanism kinematic；With the extension of research work and scientific domain, in order to incite somebody to action
Novel intelligent material is introduced into precision actuation field, the method using magnetic rheology effect control frictional force is proposed, by changing
Varying magnetic field controls frictional force and realizes control driver fan-out capability.
In view of above-mentioned condition, the utility model proposes piezoelectric actuator using symmetrical square wave electric signal as piezoelectric vibrator
Pumping signal, piezoelectric vibrator generates different size of inertial impact force under the conditions of asymmetric clamping, when the impact force of generation
When greater than frictional force, movable body movement, when the impact force of generation is less than frictional force, movable body is static.The frictional force of driver
Regulating device can indirectly control the output performance of driver, have according to the energization size of electromagnetic coil, regulating friction force size
Good controllability.
Summary of the invention
The technical problem to be solved by the utility model is to being coupled by introducing magnetorheological fluid with electromagnetic coil to optimize pressure
The generally existing solid of apparatus for adjusting force is rubbed in electric drive to solid friction, to solve common piezoelectric actuator because of solid
The fretting wear of solid generation, frictional force are unevenly distributed, frictional force is difficult to quantitative the problems such as adjusting.
In order to solve the above technical problems, the technical solution adopted in the utility model is:
A kind of cantilever type piezoelectric linear actuator of magnetic rheologic magnetic coupling tune friction comprising: movable body (a), sliding block
One (b1), sliding block two (b2), guide rail one (c1), guide rail two (c2), side plate one (d1), side plate two (d2), side plate three (d3), side
Plate four (d4), sealing strip fixed plate (e), upper magnetic conductive shell (g1), lower magnetic conductive shell (g2), electromagnetic coil (h), pedestal (i), magnetic
Rheology liquid (j), diaphragm seal (k1), sealing strip one (k2), sealing strip two (k3), frictional disk (l), coil rack (m), right side quality
Block (n1), left side mass block (n2), right side piezoelectric vibrator (o1), left side piezoelectric vibrator (o2), right side substrate (o102), left side base
Plate (o202), right side piezoelectric ceramics (o101), left side piezoelectric ceramics (o201), short grip block (p), long grip block (q), movable body
(a) there are right side piezoelectric vibrator (o1), left side piezoelectric vibrator (o2) in the affixed long grip block (q) in middle part, long grip block (q) two sides；It is right
The right side mass block that side pressure electric tachometer indicator (o1) is bonded by right side piezoelectric ceramics (o101), right side substrate (o102) and substrate free end
(n1) it forms, left side piezoelectric vibrator (o2) is bonded by left side piezoelectric ceramics (o201), left side substrate (o202) and substrate free end
Left side mass block (n2) composition, the fixing end of substrate is by long grip block (q) and the asymmetric clamping of short grip block (p)；Long clamping
Frictional disk (l) is fixedly mounted in block (q) bottom, and frictional disk (l) is dipped in magnetorheological fluid (j)；Movable body (a) two sides are fixedly mounted
On the sliding block one (b1), sliding block two (b2) of linear guide, guide rail one (c1), guide rail two (c2) are respectively and fixedly installed to side plate one
(d1), on side plate two (d2), side plate one (d1), side plate two (d2), side plate three (d3), side plate four (d4) are fixedly mounted on pedestal
(i) on, the electromagnetic coil (h) for having magnetic conductive shell is placed on pedestal (i), has diaphragm seal (k1) and sealing in the middle part of magnetic conductive shell
Item one (k2), sealing strip two (k3) sealing form the cavity for placing magnetorheological fluid；Upper magnetic conductive shell (g1), lower magnetic conductive shell
(g2), frictional disk (l) material is electrical pure iron；Pedestal (i) and side plate material are organic glass；Coil rack (m) material is modeling
Material.
The utility model has the advantages that: the frictional force adjustment for realizing driver is coupled with electromagnetic coil using magnetorheological fluid,
Reduce traditional fretting wear, improves precision and the service life of driver.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is A-A diagrammatic cross-section in the overall structure diagram of the utility model；
Fig. 3 is B-B diagrammatic cross-section in the overall structure diagram of the utility model；
Fig. 4 is the primary magnetic field magnetic circuit that left side electromagnetic coil generates in the overall structure diagram of the utility model.
Specific embodiment
Present embodiment is illustrated referring to figs. 1 to Fig. 4, and a kind of magnetic rheologic magnetic coupling tune described in present embodiment rubs
The cantilever type piezoelectric linear actuator of wiping, the affixed long grip block (q) in movable body (a) middle part, long grip block (q) two sides have right side to press
Electric tachometer indicator (o1), left side piezoelectric vibrator (o2)；Right side piezoelectric vibrator (o1) is by right side piezoelectric ceramics (o101), right side substrate
(o102) it is formed with the right side mass block (n1) of substrate free end bonding, left side piezoelectric vibrator (o2) is by left side piezoelectric ceramics
(o201), left side mass block (n2) composition of left side substrate (o202) and substrate free end bonding, the fixing end of substrate is by growing folder
Hold block (q) and the asymmetric clamping of short grip block (p)；Frictional disk (l) is fixedly mounted in long grip block (q) bottom, and frictional disk (l) is dipped in
In magnetorheological fluid (j)；Movable body (a) two sides are fixedly mounted on the sliding block one (b1) of linear guide, on sliding block two (b2), guide rail one
(c1), guide rail two (c2) is respectively and fixedly installed to side plate one (d1), on side plate two (d2), side plate one (d1), side plate two (d2), side
Plate three (d3), side plate four (d4) are fixedly mounted on pedestal (i), and the electromagnetic coil for having magnetic conductive shell is placed on pedestal (i)
(h), it is formed with diaphragm seal (k1) and sealing strip one (k2), sealing strip two (k3) sealing in the middle part of magnetic conductive shell and places magnetorheological fluid
Cavity；Upper magnetic conductive shell (g1), lower magnetic conductive shell (g2), frictional disk (l) material are electrical pure iron；Pedestal (i) and side plate material
Matter is organic glass；Coil rack (m) material is plastics.
In the utility model, the electromagnetic field that magnetic conductive shell and electromagnetic coil structure generate shears introduction by magnetic field to frictional disk
In magnetorheological fluid structure, the most of magnetic field generated in electromagnetic coil is used in magnetic rheology effect.
In the utility model, using symmetrical square wave electric signal as the pumping signal of piezoelectric vibrator, piezoelectric vibrator is non-right
Claim to generate different size of inertial impact force under the conditions of clamping, when the impact force of generation is greater than frictional force, movable body is stablized single
To movement, when the impact force of generation is less than frictional force, movable body stop motion.The friction apparatus for adjusting force energy of driver according to
The energization size of electromagnetic coil, regulating friction force size indirectly control the output performance of driver, have good controllability.
Claims (1)
1. a kind of cantilever type piezoelectric linear actuator of magnetic rheologic magnetic coupling tune friction comprising: movable body (a), sliding block one
(b1), sliding block two (b2), guide rail one (c1), guide rail two (c2), side plate one (d1), side plate two (d2), side plate three (d3), side plate four
(d4), sealing strip fixed plate (e), upper magnetic conductive shell (g1), lower magnetic conductive shell (g2), electromagnetic coil (h), pedestal (i), magnetorheological
Liquid (j), diaphragm seal (k1), sealing strip one (k2), sealing strip two (k3), frictional disk (l), coil rack (m), right side mass block
(n1), left side mass block (n2), right side piezoelectric vibrator (o1), left side piezoelectric vibrator (o2), right side substrate (o102), left side substrate
(o202), right side piezoelectric ceramics (o101), left side piezoelectric ceramics (o201), short grip block (p), long grip block (q), feature exist
In: there are right side piezoelectric vibrator (o1), the vibration of left side piezoelectricity in affixed long grip block (q) in the middle part of movable body (a), long grip block (q) two sides
Sub (o2)；Right side piezoelectric vibrator (o1) is bonded by right side piezoelectric ceramics (o101), right side substrate (o102) and substrate free end
Right side mass block (n1) composition, left side piezoelectric vibrator (o2) is by left side piezoelectric ceramics (o201), left side substrate (o202) and substrate
Left side mass block (n2) composition of free end bonding, the fixing end of substrate is by long grip block (q) and the asymmetric folder of short grip block (p)
It holds；Frictional disk (l) is fixedly mounted in long grip block (q) bottom, and frictional disk (l) is dipped in magnetorheological fluid (j)；Movable body (a) two sides
It is fixedly mounted on the sliding block one (b1) of linear guide, on sliding block two (b2), guide rail one (c1), guide rail two (c2) are fixedly mounted respectively
On side plate one (d1), side plate two (d2), side plate one (d1), side plate two (d2), side plate three (d3), side plate four (d4) are fixedly mounted
On pedestal (i), the electromagnetic coil (h) for having magnetic conductive shell is placed on pedestal (i), has diaphragm seal (k1) in the middle part of magnetic conductive shell
The cavity for placing magnetorheological fluid is formed with sealing strip one (k2), sealing strip two (k3) sealing；Outside upper magnetic conductive shell (g1), lower magnetic conduction
Shell (g2), frictional disk (l) material are electrical pure iron；Pedestal (i) and side plate material are organic glass；Coil rack (m) material is
Plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821707404.4U CN209299161U (en) | 2018-10-09 | 2018-10-09 | A kind of cantilever type piezoelectric linear actuator of magnetic rheologic magnetic coupling tune friction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821707404.4U CN209299161U (en) | 2018-10-09 | 2018-10-09 | A kind of cantilever type piezoelectric linear actuator of magnetic rheologic magnetic coupling tune friction |
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| Publication Number | Publication Date |
|---|---|
| CN209299161U true CN209299161U (en) | 2019-08-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821707404.4U Expired - Fee Related CN209299161U (en) | 2018-10-09 | 2018-10-09 | A kind of cantilever type piezoelectric linear actuator of magnetic rheologic magnetic coupling tune friction |
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| CN (1) | CN209299161U (en) |
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2018
- 2018-10-09 CN CN201821707404.4U patent/CN209299161U/en not_active Expired - Fee Related
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Granted publication date: 20190823 Termination date: 20201009 |
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| CF01 | Termination of patent right due to non-payment of annual fee |