CN209267473U - A kind of cantilever type piezoelectric rotating driver of magnetic rheologic magnetic coupling tune friction - Google Patents
A kind of cantilever type piezoelectric rotating driver of magnetic rheologic magnetic coupling tune friction Download PDFInfo
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- CN209267473U CN209267473U CN201821707463.1U CN201821707463U CN209267473U CN 209267473 U CN209267473 U CN 209267473U CN 201821707463 U CN201821707463 U CN 201821707463U CN 209267473 U CN209267473 U CN 209267473U
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- Prior art keywords
- grip block
- output shaft
- piezoelectric
- conductive shell
- magnetic conductive
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Abstract
The utility model relates to a kind of cantilever type piezoelectric rotating drivers of magnetic rheologic magnetic coupling tune friction, belong to Precision Piezoelectric actuation techniques field.Affixed long grip block in the middle part of output shaft has two pieces of piezoelectric chips on long grip block, is fixedly connected by short grip block with screw, inertial mass, output shaft bottom fixed installation frictional disk are fixed in piezoelectric chip end respectively, and frictional disk is dipped in magnetorheological fluid；Output shaft top is affixed by load-bearing plate with bearing, bearing is fixedly mounted on the cover board, cylinder is fixedly mounted between bottom plate and cover board, 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 invention belongs to small, precision actuation fields.
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.Inertial piezoelectric driver is by inertial mass
Driving device of the inertial impact force generated with piezoelectric element collective effect as driving force, mechanical structure is simple, movement speed
Degree is very fast, and the driving motion mode of formation is easily controllable, and can obtain the continuous movement of big stroke, can be existed with steady operation
High frequency state is always the hot spot studied both at home and abroad.
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, piezoelectric actuator proposed by the present invention swashing using symmetrical square wave electric signal as piezoelectric vibrator
Signal is encouraged, piezoelectric vibrator generates different size of inertial impact force under the conditions of asymmetric clamping, when the impact force of generation is greater than
When frictional force, output shaft rotation, when the impact force of generation is less than frictional force, output shaft stops rotating.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 problems to be solved by the present invention are: being coupled by introducing magnetorheological fluid with electromagnetic coil to optimize piezoelectricity and drive
The generally existing solid of friction apparatus for adjusting force is to solid friction in dynamic device, to solve common piezoelectric actuator because solid is to solid
The fretting wear of body 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 by the present invention is that:
Affixed long grip block (p) in the middle part of output shaft (n) has piezoelectric chip one (k1), piezoelectric chip two on long grip block
(k2), it is fixedly connected by short grip block one (11), short grip block two (12) with screw, inertia matter is fixed in piezoelectric chip end respectively
Frictional disk (h) is fixedly mounted in gauge block one (j1) and inertial mass (j2), output shaft bottom, and frictional disk is dipped in magnetorheological fluid (f)
In；Output shaft (n) top is affixed by load-bearing plate (m) with bearing (o), and bearing is fixedly mounted on cover board (q), and cylinder (a) is solid
Dingan County is mounted between bottom plate (e) and cover board, and the electromagnetism for having upper magnetic conductive shell (c1) and lower magnetic conductive shell (c2) is placed on pedestal
Coil (d), middle part form the cavity for placing magnetorheological fluid with diaphragm seal (g1) and sealing strip (g2) sealing；Upper magnetic conductive shell
It is electrical pure iron with lower magnetic conductive shell material；Coil rack (i) material is engineering plastics.
The invention has the advantages that coupling the frictional force adjustment for realizing driver 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 overall structure diagram of the invention；
Fig. 2 is A-A diagrammatic cross-section in overall structure diagram of the invention；
Fig. 3 is B-B diagrammatic cross-section in overall structure diagram of the invention；
Fig. 4 is the primary magnetic field magnetic circuit that left side electromagnetic coil generates in overall structure diagram of the invention.
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 rotating driver of wiping, affixed long grip block (p) in the middle part of output shaft (n) have piezoelectric chip one on long grip block
(k1), piezoelectric chip two (k2) is fixedly connected by short grip block one (11), short grip block two (12) with screw, piezo crystals bit end
Inertial mass one (j1) and inertial mass (j2) are fixed respectively by portion, and frictional disk (h) is fixedly mounted in output shaft bottom, frictional disk
It is dipped in magnetorheological fluid (f)；Output shaft (n) top is affixed by load-bearing plate (m) with bearing (o), and bearing is fixedly mounted on cover board
(q) on, cylinder (a) is fixedly mounted between bottom plate (e) and cover board, is placed on pedestal with upper magnetic conductive shell (c1) and lower magnetic conduction
The electromagnetic coil (d) of shell (c2), middle part form the appearance for placing magnetorheological fluid with diaphragm seal (g1) and sealing strip (g2) sealing
Chamber；Upper magnetic conductive shell and lower magnetic conductive shell material are electrical pure iron；Coil rack (i) material is engineering plastics.
In the present invention, introduction by magnetic field to frictional disk is sheared magnetic current by the electromagnetic field that magnetic conductive shell and electromagnetic coil structure generate
Become in liquid structure, the most of magnetic field generated in electromagnetic coil is used in magnetic rheology effect.
In the present invention, using symmetrical square wave electric signal as the pumping signal of piezoelectric vibrator, piezoelectric vibrator is in asymmetric folder
Different size of inertial impact force is generated under the conditions of holding, when the impact force of generation is greater than frictional force, movable body stablizes unidirectional fortune
It is dynamic, when the impact force of generation is less than frictional force, movable body stop motion.The friction apparatus for adjusting force of driver can be according to electromagnetism
The energization size of coil, regulating friction force size indirectly control the output performance of driver, have good controllability.
Claims (1)
1. a kind of cantilever type piezoelectric rotating driver of magnetic rheologic magnetic coupling tune friction comprising: cylinder (a), sealing strip are solid
Fixed board (b), upper magnetic conductive shell (c1), lower magnetic conductive shell (c2), electromagnetic coil (d), bottom plate (e), magnetorheological fluid (f), diaphragm seal
(g1), sealing ring (g2), frictional disk (h), coil rack (i), inertial mass one (j1), inertial mass two (j2), piezoelectricity
Chip one (k1), piezoelectric chip two (k2), short grip block one (l1), short grip block (l2), load-bearing plate (m), output shaft (n), axis
(o), long grip block (p), cover board (q) are held it is characterized by: affixed long grip block (p) in the middle part of output shaft (n), is had on long grip block
Piezoelectric chip one (k1), piezoelectric chip two (k2) are fixedly connected by short grip block one (l1), short grip block two (l2) with screw,
Inertial mass one (j1) and inertial mass (j2) are fixed in piezoelectric chip end respectively, and frictional disk is fixedly mounted in output shaft bottom
(h), frictional disk is dipped in magnetorheological fluid (f)；Output shaft (n) top is affixed by load-bearing plate (m) with bearing (o), and bearing is fixed
It is mounted on cover board (q), cylinder (a) is fixedly mounted between bottom plate (e) and cover board, is placed on pedestal and is had upper magnetic conductive shell
(c1) with the electromagnetic coil (d) of lower magnetic conductive shell (c2), middle part forms with diaphragm seal (g1) and sealing strip (g2) sealing and places
The cavity of magnetorheological fluid；Upper magnetic conductive shell and lower magnetic conductive shell material are electrical pure iron；Coil rack (i) material is engineering plastic
Material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821707463.1U CN209267473U (en) | 2018-10-09 | 2018-10-09 | A kind of cantilever type piezoelectric rotating driver of magnetic rheologic magnetic coupling tune friction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821707463.1U CN209267473U (en) | 2018-10-09 | 2018-10-09 | A kind of cantilever type piezoelectric rotating driver of magnetic rheologic magnetic coupling tune friction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209267473U true CN209267473U (en) | 2019-08-16 |
Family
ID=67558766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821707463.1U Expired - Fee Related CN209267473U (en) | 2018-10-09 | 2018-10-09 | A kind of cantilever type piezoelectric rotating driver of magnetic rheologic magnetic coupling tune friction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209267473U (en) |
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2018
- 2018-10-09 CN CN201821707463.1U patent/CN209267473U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190816 Termination date: 20201009 |