CN206164396U - Accurate piezoelectricity thread drive mechanism is received to declining of columnar structure - Google Patents
Accurate piezoelectricity thread drive mechanism is received to declining of columnar structure Download PDFInfo
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- CN206164396U CN206164396U CN201621231371.1U CN201621231371U CN206164396U CN 206164396 U CN206164396 U CN 206164396U CN 201621231371 U CN201621231371 U CN 201621231371U CN 206164396 U CN206164396 U CN 206164396U
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Abstract
The utility model discloses an accurate piezoelectricity thread drive mechanism is received to declining of columnar structure to solve reliability, security and practicality subalternation problem that current screw thread secondary drive type supersound motor exists owing to encapsulating. The utility model discloses a spacing end cover, stator, encapsulation sleeve, locking screw and rotor output shaft, spacing end cover is connected with encapsulation bush thread, and the encapsulation sleeve passes through locking screw to be connected with the stator, and the stator is connected with rotor output shaft thread, the utility model discloses an excite the second order mode of flexural vibration of mutually orthogonal on the free stator space, utilize little vice ultrasonic vibration's stack and coupling, produce the drive travelling wave at the stator internal surface of nut elastomer and piezoceramics piece excitation group no. 1 and two component in the piezoceramics piece excitation group, utilize that the screw is vice to make rotor output shaft realization rotation linear motion output. Has extensive application prospect at micro driving technical field such as aerospace, digital product and medical instrument.
Description
Technical field
The utility model is related to a kind of micro-nano precision piezoelectricity thread drive mechanism of column structure, belongs to micro-nano actuation techniques
Field.
Background technology
It is all polymorphic type ultrasound electric machines using the driving rotation-linear ultrasonic motor of the screw thread pair of stator flexural vibration mode
In one kind, relative to other types of ultrasound electric machine, the stator of such ultrasound electric machine, by screw thread auxiliary driving, leads to output shaft
Cross and excite two flexural vibration modes mutually orthogonal on stator space, using vibration coupling be superimposed, at stator driving end
Inner surface produce drive traveling wave, it can easier realize threaded output shaft rotation-linear degrees of freedom motion output.It
Compared with the ultrasound electric machine of disk traveling wave type, with simple structure, be easy to miniaturization and positioning precision it is high the characteristics of.Based on spiral shell
The driving ultrasound electric machine of screw thread pair of line auxiliary driving according to ultrasonic motor stator structure it is different from exciting pattern be divided into it is following
It is several：Stator drives the screw thread driven polyhedron ultrasonic electricity of traveling wave for the utilization in-plane bending vibration modal coupling of polyhedral structure
Machine, using the driving ultrasound electric machine of screw thread pair of flexural vibration mode standing wave drive in ring-type superthin structure stator face, this is several
Using polyhedron or circular ring more than the stator of motor, by exciting the in plane vibration mode of stator motor output part is realized
Rotation-linear motion.
With the continuous development of the driving ultrasound electric machine of screw thread pair, a kind of stator is clamped using one end of cantilever beam structure
The driving linear electric motors of Piezoelectric anisotropy bent beam screw thread pair are also studied by substantial amounts of researcher, and such motor mainly uses post
The coupling of the orthogonal space flexural vibration mode of shape cantilever beam structure stator is produced and drives traveling wave, realizes that the motion of output shaft is defeated
Go out；There is another kind the screw drive type column rotation-linear ultrasonic motor for representing meaning mainly to have stator to paste piezoelectric patches
Metal pipe type and the two kinds of ultrasound waveguide screw motor of piezoelectricity tubular type, the ultrasound waveguide screw motor is mainly profit
Two spatially orthogonal first-order bending vibrations of the cylindrical stator that freely constrained with two ends intercouple, in stator free end
Surface produces and drives traveling wave, and stator, by screw thread auxiliary driving, in the presence of axial load power output shaft is realized with output shaft
Rotation-linear motion output；Adopting piezoelectric element used by the driving ultrasonic motor stator of above-mentioned screw thread pair mored 31Vibration mode,
Motor is caused to there is certain advantage in miniaturization manufacture view using this kind of vibration mode.In sum, current research scholar
The lifting of motor body performance is mainly concentrated on for the research work that the driving ultrasound electric machine of screw thread pair is done, but in screw thread
The encapsulation design aspect of secondary driving ultrasound electric machine is but rarely reported, and this causes the driving ultrasound electric machine of screw thread pair in precision actuation
Shortage reliability serious in technical field application process, security and practicality, this to a certain degree on limit screw thread pair drive
Ejector half ultrasound electric machine drives in micro-nanos such as optical precision instrument, Aero-Space, digital product, intelligent robot and medicine equipments
Further development in technical field and application.
The content of the invention
Cause it in micro-move device technical field because not being packaged design to solve the driving ultrasound electric machine of screw thread pair
The problems such as lacking reliability, security and practicality in application process, the utility model discloses a kind of micro-nano of column structure
Accurate piezoelectricity thread drive mechanism.
The technical scheme that the utility model is adopted is：
A kind of micro-nano precision piezoelectricity thread drive mechanism of described column structure includes spacing end cap, stator, package cover
Cylinder, lock-screw and rotor of output shaft axle；The spacing end cap be threadedly coupled with encapsulation sleeve, encapsulation sleeve by lock-screw and
Stator connects, and stator is threadedly coupled with rotor of output shaft axle；The spacing end cap is provided with encapsulation external screw thread, wire guide and spacing
Plate；The stator arranges limited location bellmouth, piezoelectric ceramic piece excitation group one, piezoelectric ceramic piece excitation group two, nut elastomer
With stator internal thread hole；The encapsulation sleeve is provided with sleeve positioning faceted pebble, sleeve cascaded surface, sleeve faceted pebble screw, sleeve
Screw thread and sleeve intercommunicating pore；The rotor of output shaft axle is provided with rotor of output shaft axle external screw thread and converter；Outside the encapsulation
It is threaded through internal thread of sleeve to be threadedly coupled with encapsulation sleeve, wire guide is used for piezoelectric ceramic piece excitation group one and piezoelectric ceramic piece
The electrified wire of excitation group two is drawn, and spacing end cap is spacing by limiting plate；The spacing bellmouth is by lock-screw and envelope
Sleeved fixation, piezoelectric ceramic piece excitation group one and piezoelectric ceramic piece excitation group two are fixed with nut elastomer precursor gum cementation respectively.Institute
State piezoelectric ceramic piece excitation group one and piezoelectric ceramic piece excitation group two is made up of respectively 4 piezoelectric elements, the stator internal thread
Hole is threadedly coupled by rotor of output shaft axle external screw thread with rotor of output shaft axle；The sleeve positioning faceted pebble is connected solid with peripheral unit
Fixed, sleeve cascaded surface is spacing when being used to be connected with peripheral unit, and sleeve faceted pebble screw is connected by lock-screw with stator, sleeve
Internal thread is threadedly coupled by encapsulation external screw thread with spacing end cap, and sleeve intercommunicating pore is used to realize that the motion of rotor of output shaft axle is defeated
Go out；The rotor of output shaft axle external screw thread be threadedly coupled with stator by stator internal thread hole, the converter will can revolve
Turn-transform linear motion linear motion.
The stator length is 3 ~ 5 with the ratio span of the section length of side；The length and stator of the rotor of output shaft axle
Lenth ratio meet span be 1.5 ~ 2.5；The length of the encapsulation sleeve and the section length of side ratio of encapsulation sleeve
The span of satisfaction is 2 ~ 5；The diameter of the lock-screw is 0.2 than the span for meeting with the diameter of rotor of output shaft axle
~0.5。
The beneficial effects of the utility model：The utility model discloses a kind of micro-nano precision piezoelectricity thread of column structure drives
Motivation structure.By the encapsulation to the driving ultrasound electric machine of screw thread pair, the driving ultrasound electric machine of screw thread pair is solved well and is being answered
The problems such as with reliability present in process, security and poor practicability.Simultaneously as the piezoelectricity thread drive component has determining
Position high precision, fast response time, environment are suitable for the technical advantages such as ability is strong, Aero-Space, digital product, intelligent robot with
And the micro-nano actuation techniques field such as medicine equipment has broad application prospects.
Description of the drawings
Fig. 1 show the utility model proposes a kind of column structure micro-nano precision piezoelectricity thread drive mechanism blast
View；
Fig. 2 show the utility model proposes a kind of column structure micro-nano precision piezoelectricity thread drive mechanism it is self-contained
Structural representation；
Fig. 3 show the utility model proposes a kind of column structure micro-nano precision piezoelectricity thread drive mechanism it is spacing
End cover structure schematic diagram；
Fig. 4 show the utility model proposes a kind of column structure micro-nano precision piezoelectricity thread drive mechanism stator
Structural representation；
Fig. 5 show the utility model proposes a kind of column structure micro-nano precision piezoelectricity thread drive mechanism stator
Structure sectional view vertically, piezoelectric element is divided into two groups in figure, and the cross section outline of nut elastomer is square；In figure
"+" number and "-" number represent piezoelectric element polarised direction；
Fig. 6 show the utility model proposes a kind of column structure micro-nano precision piezoelectricity thread drive mechanism encapsulation
Tube-in-tube structure schematic diagram；
Fig. 7 show the utility model proposes a kind of column structure micro-nano precision piezoelectricity thread drive mechanism encapsulation
Tube-in-tube structure side view；
Fig. 8 show the utility model proposes a kind of column structure micro-nano precision piezoelectricity thread drive mechanism rotor
Output shaft structural representation.
Specific embodiment
Specific embodiment one：Present embodiment is illustrated with reference to Fig. 1 ~ Fig. 8.Present embodiments provide for a kind of column structure
Micro-nano precision piezoelectricity thread drive mechanism specific embodiment.A kind of micro-nano precision piezoelectricity thread of column structure drives
Motivation structure is made up of spacing end cap 1, stator 2, encapsulation sleeve 3, lock-screw 4 and rotor of output shaft axle 5.The spacing end cap 1 with
Encapsulation sleeve 3 is threadedly coupled, and encapsulation sleeve 3 is connected by lock-screw 4 with stator 2, and stator 2 connects with the screw thread of rotor of output shaft axle 5
Connect.
The spacing end cap 1 is provided with encapsulation external screw thread 1-1, wire guide 1-2 and limiting plate 1-3；The stator 2 is provided with
Spacing bellmouth 2-1, the 2-2-1 of piezoelectric ceramic piece excitation group one, the 2-2-2 of piezoelectric ceramic piece excitation group two, nut elastomer 2-3
With stator internal thread hole 2-4；The encapsulation sleeve 3 is provided with sleeve positioning faceted pebble 3-1, sleeve cascaded surface 3-2, sleeve faceted pebble spiral shell
Hole 3-3, internal thread of sleeve 3-4 and sleeve intercommunicating pore 3-5；The rotor of output shaft axle 5 be provided with rotor of output shaft axle external screw thread 5-1 and
Converter 5-2.
The encapsulation external screw thread 1-1 is threadedly coupled by internal thread of sleeve 3-4 with encapsulation sleeve 3, and wire guide 1-2 is used to press
The electrified wire of the 2-2-1 of electroceramics piece excitation group one and the 2-2-2 of piezoelectric ceramic piece excitation group two is drawn, and spacing end cap 1 is by limit
Plate 1-3 is spacing for position；The spacing bellmouth 2-1 is fixed by lock-screw 4 with encapsulation sleeve 3, piezoelectric ceramic piece excitation group one
2-2-1 and the 2-2-2 of piezoelectric ceramic piece excitation group two respectively with the gluing fixations of nut elastomer 2-3, piezoelectric ceramic piece excitation
The group one 2-2-1 and 2-2-2 of piezoelectric ceramic piece excitation group two is made up of respectively 4 piezoelectric elements, the stator internal thread hole 2-4
It is threadedly coupled with rotor of output shaft axle 5 by rotor of output shaft axle external screw thread 5-1；The sleeve positioning faceted pebble 3-1 connects with peripheral unit
Fixation is connect, sleeve cascaded surface 3-2 is spacing when being used to be connected with peripheral unit, sleeve faceted pebble screw 3-3 passes through lock-screw 4 and determines
Son 2 is threadedly coupled, and internal thread of sleeve 3-4 is threadedly coupled by encapsulation external screw thread 1-1 with spacing end cap 1, and sleeve intercommunicating pore 3-5 is used
In the movement output for realizing rotor of output shaft axle 5；The rotor of output shaft axle external screw thread 5-1 is by stator internal thread hole 2-4 and stator 2
Rotation-transform linear motion can be linear motion by threaded connection, the converter 5-2.
The span that the length of the stator 2 meets with the length of side ratio K in the section of stator 2 is 3 ~ 5；This specific embodiment
The value of middle K is 3, and the Outside Dimensions of the stator 2 are 25 mm × 25 mm × 75 mm.The length of the rotor of output shaft axle 5 with
The span that the lenth ratio E of stator 2 meets is 1.5 ~ 2.5；The value of E is 1.5 in this specific embodiment.The encapsulation
The span that the length of sleeve 3 meets with the section length of side ratio F of encapsulation sleeve 3 is 2 ~ 5；F in this specific embodiment
Value is 3, and the Outside Dimensions of the encapsulation sleeve 3 are 40 mm × 40 mm × 120 mm.The diameter of the lock-screw 4 with turn
The diameter of sub- output shaft 5 is 0.2 ~ 0.5 than the span that H meets, and the value of H is 0.3 in this specific embodiment.
A kind of energisation mode of the micro-nano precision piezoelectricity thread drive mechanism of column structure is as follows.Described pressure
The second order that the 2-2-1 of electroceramics piece excitation group one and the 2-2-2 of piezoelectric ceramic piece excitation group two are respectively placed in nut elastomer 2-3 is curved
At the center wave amplitude of two amplitudes of Qu Zhendong, stator 2 can be fixed by lock-screw 4 at vibration nodal point.The piezoelectricity thread
Specific step mode is when drive component is used：A pair of pressures that two panels is oppositely arranged in the 2-2-1 of piezoelectric ceramic piece excitation group one
Electric device indirect current signal is sinωt,ωFor the frequency of ac signal,tFor the time；The 2- of piezoelectric ceramic piece excitation group one
In 2-1 another pair piezoelectric element indirect current signal be sin (ωt+φ),φFor phase difference；Piezoelectric ceramic piece excitation group two
In 2-2-2 it is corresponding with a pair of piezoelectric elements in the 2-2-1 of piezoelectric ceramic piece excitation group one that to piezoelectric element indirect current signal
For-sinωt, with another pair piezoelectricity unit in the 2-2-1 of piezoelectric ceramic piece excitation group one in the 2-2-2 of piezoelectric ceramic piece excitation group two
Corresponding that of part be to piezoelectric element indirect current signal-sin (ωt+φ)；Nut elastomer 2-3's is external surface grounded.Its
In, the frequencies omega of ac signal typically should match or close with the stator second order resonance of flexural vibration frequency, thus reach
The effect of the mutually orthogonal second order flexural vibration mode in the space of stator 2, phase difference is excited to be generally 90 ° or 27 °, using vibration coupling
Close the inner surface coupling in two free ends of stator 2 and produce driving traveling wave, via screw thread pair in the presence of axial load power
Realize the rotation-linear motion output in a direction of rotor of output shaft axle 5；When phase difference is when 90 ° are changed into 270 °, rotor can be made
Output shaft 5 produces rightabout rotation-linear motion output.
In sum, the utility model discloses a kind of micro-nano precision piezoelectricity thread drive mechanism of column structure.Preferably
Solve screw thread pair driving ultrasound electric machine reliability present in actual application, security and poor practicability etc. ask
Topic.Meanwhile, there is the micro-nano precision piezoelectricity thread drive mechanism of the column structure positioning precision height, fast response time, environment to fit
With the technical advantage such as ability is strong, in optical precision instrument, Aero-Space, digital product, intelligent robot and medicine equipment etc.
Precision actuation technical field is with a wide range of applications.
Claims (2)
1. the micro-nano precision piezoelectricity thread drive mechanism of a kind of column structure, it is characterised in that the piezoelectricity thread drive component includes
Spacing end cap（1）, stator（2）, encapsulation sleeve（3）, lock-screw（4）And rotor of output shaft axle（5）；The spacing end cap（1）With
Encapsulation sleeve（3）Threaded connection, encapsulates sleeve（3）By lock-screw（4）With stator（2）Connection, stator（2）With rotor output
Axle（5）Threaded connection；The spacing end cap（1）It is provided with encapsulation external screw thread（1-1）, wire guide（1-2）And limiting plate（1-3）；
The stator（2）Limited location bellmouth is set（2-1）, piezoelectric ceramic piece excitation group one（2-2-1）, piezoelectric ceramic piece excitation group two
（2-2-2）, nut elastomer（2-3）With stator internal thread hole（2-4）；The encapsulation sleeve（3）It is provided with sleeve positioning faceted pebble
（3-1）, sleeve cascaded surface（3-2）, sleeve faceted pebble screw（3-3）, internal thread of sleeve（3-4）With sleeve intercommunicating pore（3-5）；It is described
Rotor of output shaft axle（5）It is provided with rotor of output shaft axle external screw thread（5-1）And converter（5-2）；The encapsulation external screw thread（1-1）
By internal thread of sleeve（3-4）With encapsulation sleeve（3）Threaded connection, wire guide（1-2）For piezoelectric ceramic piece excitation group one（2-
2-1）With piezoelectric ceramic piece excitation group two（2-2-2）The extraction of electrified wire, spacing end cap（1）By limiting plate（1-3）It is spacing；
The spacing bellmouth（2-1）By lock-screw（4）With encapsulation sleeve（3）It is fixed, piezoelectric ceramic piece excitation group one（2-2-1）
With piezoelectric ceramic piece excitation group two（2-2-2）Respectively with nut elastomer（2-3）Gluing fixation, described piezoelectric ceramic piece excitation
Group one（2-2-1）With piezoelectric ceramic piece excitation group two（2-2-2）It is made up of 4 piezoelectric elements respectively, the stator internal thread hole
（2-4）By rotor of output shaft axle external screw thread（5-1）With rotor of output shaft axle（5）Threaded connection；The sleeve positions faceted pebble（3-1）With
Peripheral unit is connected, sleeve cascaded surface（3-2）It is spacing during for being connected with peripheral unit, sleeve faceted pebble screw（3-3）It is logical
Cross lock-screw（4）With stator（2）Threaded connection, internal thread of sleeve（3-4）By encapsulating external screw thread（1-1）With spacing end cap
（1）Threaded connection, sleeve intercommunicating pore（3-5）For realizing rotor of output shaft axle（5）Movement output；The outer spiral shell of the rotor of output shaft axle
Line（5-1）By stator internal thread hole（2-4）With stator（2）Threaded connection, converter（5-2）Rotation-straight line can be transported
Dynamic conversion linear motion.
2. a kind of micro-nano precision piezoelectricity thread drive mechanism of column structure according to claim 1, it is characterised in that institute
State stator（2）Length is 3 ~ 5 with the ratio range of the section length of side；The rotor of output shaft axle（5）Length and stator（2）The ratio of length
Value scope is 1.5 ~ 2.5；The encapsulation sleeve（3）Length and encapsulation sleeve（3）The ratio range of the section length of side is 2 ~ 5；It is described
Lock-screw（4）Diameter and rotor of output shaft axle（5）The ratio range of diameter is 0.2 ~ 0.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621231371.1U CN206164396U (en) | 2016-11-17 | 2016-11-17 | Accurate piezoelectricity thread drive mechanism is received to declining of columnar structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621231371.1U CN206164396U (en) | 2016-11-17 | 2016-11-17 | Accurate piezoelectricity thread drive mechanism is received to declining of columnar structure |
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| Publication Number | Publication Date |
|---|---|
| CN206164396U true CN206164396U (en) | 2017-05-10 |
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ID=58660316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621231371.1U Expired - Fee Related CN206164396U (en) | 2016-11-17 | 2016-11-17 | Accurate piezoelectricity thread drive mechanism is received to declining of columnar structure |
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| CN (1) | CN206164396U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107707150A (en) * | 2017-11-09 | 2018-02-16 | 南京航空航天大学 | The ultrasound electric machine and method of work of screw thread pair driving based on bending vibration modes |
| CN108969032A (en) * | 2018-07-09 | 2018-12-11 | 南京航空航天大学 | A kind of magnetic-type laparoscope mechanism of straight line-rotation-oscillation Three Degree Of Freedom |
| CN111525834A (en) * | 2019-02-04 | 2020-08-11 | 锡德雷特技术公司 | Nano linear motion control mechanism based on screw |
-
2016
- 2016-11-17 CN CN201621231371.1U patent/CN206164396U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107707150A (en) * | 2017-11-09 | 2018-02-16 | 南京航空航天大学 | The ultrasound electric machine and method of work of screw thread pair driving based on bending vibration modes |
| CN108969032A (en) * | 2018-07-09 | 2018-12-11 | 南京航空航天大学 | A kind of magnetic-type laparoscope mechanism of straight line-rotation-oscillation Three Degree Of Freedom |
| CN108969032B (en) * | 2018-07-09 | 2020-11-24 | 南京航空航天大学 | Straight line-rotation-swing three-degree-of-freedom magnetic attraction type laparoscope mechanism |
| CN111525834A (en) * | 2019-02-04 | 2020-08-11 | 锡德雷特技术公司 | Nano linear motion control mechanism based on screw |
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| 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: 20170510 Termination date: 20171117 |