CN207612206U - The ultrasound electric machine of screw thread pair driving based on bending vibration modes - Google Patents
The ultrasound electric machine of screw thread pair driving based on bending vibration modes Download PDFInfo
- Publication number
- CN207612206U CN207612206U CN201721486234.7U CN201721486234U CN207612206U CN 207612206 U CN207612206 U CN 207612206U CN 201721486234 U CN201721486234 U CN 201721486234U CN 207612206 U CN207612206 U CN 207612206U
- Authority
- CN
- China
- Prior art keywords
- sleeve
- stator
- diameter
- cylinder
- screw thread
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000002604 ultrasonography Methods 0.000 title claims abstract description 24
- 238000005452 bending Methods 0.000 title claims abstract description 15
- 239000000919 ceramic Substances 0.000 claims abstract description 11
- 238000011068 loading method Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 229920001967 Metal rubber Polymers 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The ultrasound electric machine for the screw thread pair driving based on bending vibration modes that the utility model discloses a kind of, including stator, mover, grip slipper；Stator is open tubular column, and shape is quadrangular, and interior shape is cylinder, and is provided with internal thread；Stator outer surface posts piezoelectric ceramic piece；Stator is fixed on grip slipper；Mover is made of main shaft and sleeve；There are two different-diameter cylinders to constitute for main shaft, and large diameter cylinder is provided with external screw thread, and small-diameter circular cylinder is smooth surface；Sleeve is hollow cylinder, and length is less than small-diameter circular cylinder, and the outer diameter of sleeve is equal with the outer diameter of large diameter cylinder, and the internal diameter of sleeve is equal with the outer diameter of small-diameter circular cylinder；When motor works, the both direction that stator can drive mover to do along axis moves.Compared with conventional threads pair linear ultrasonic motor, the utility model proposes pre-pressure loading component is arranged in the design method on mover, solve the problems, such as that screw thread auxiliary-motor precompression can not change, to improve the delivery efficiency and positioning accuracy of motor.
Description
Technical field
The utility model is a kind of ultrasound electric machine of the screw thread pair driving based on bending vibration modes, belongs to ultrasound electric machine field.
Background technology
Linear ultrasonic motor is a kind of novel micro machine for rapidly developing and applying the 1980s, it utilizes piezoelectricity member
The inverse piezoelectric effect of part and the ultrasonic vibration of elastomer, by the rubbing action between stator and mover, a little elastomer
Vibration is converted into macroscopical straight line (rotation) movement of mover, pushes directly on load, it has compact-sized, low-speed big, sound
The advantages that answering fast, positioning accuracy height and Electro Magnetic Compatibility.Have widely in aerospace, weaponry and precision actuation field
Application prospect.The development speed of current country's ultrasound electric machine is quickly.On the patent website of China, there are many items super about straight line
The patent of acoustic-electric machine.
Among these, ultrasound electric machine based on screw thread pair driving as one kind at present in many output type ultrasound electric machines,
Its stator mainly carries out movement transmission with output between centers by screw thread pair.On the one hand output shaft may be implemented in this type of drive
Rotation and straight line two-freedom movement output, on the other hand can realize high position precision and height output by high-precision motion thread
The purpose of power.
The Henderson in the U.S. etc. using the hollow square-column-shaped metal stator from constraint, spatially shake by orthogonal first-order flexure
Dynamic coupling has developed two kinds of various sizes of piezoelectric patches patch type screw thread width driving ultrasound electric machines [].Since screw thread pair drives
Ultrasound electric machine realize the translation of mover in an axial direction using the relative rotation of stator and mover.Screw thread between stator and mover is deposited
So that the self-lock force of motor is fully big, ensure that motor has and resists external impact and keep stator and mover position in an axial direction
The ability set.Since the ultrasound electric machine of screw thread pair driving is simple in structure, ability with very strong resistance external impact, curing
Treatment, micromechanics, science and techniques of defence etc. have broad application prospects.
The in-plane bending vibration mode that Zhou Tieying professors of Tsinghua University et al. are led to using thin-wall circular realizes a kind of more ribs
The driving ultrasound electric machine of face screw thread pair【CN200510114849.2】, and be applied in optical focusing control system.Zhejiang
University deer deposits a kind of threaded secondary bimorph transducer screw drive ultrasound micro-motor pre-tightened of flattening of jump invention
【CN200810121130.5】For mobile lens module.Although the ultrasound electric machine of screw thread pair driving has simple in structure, resistance
The strong advantage of external impact ability, but this motor does not have a precompressed apparatus for adjusting force between stator and mover, stator and dynamic
Precompression between son can change because of the variation of load, so that the power output of motor changes, the output of motor
Performance is difficult to control.
Utility model content
The purpose of this utility model is that develop it is a kind of it is simple in structure, can facilitate adjust precompression based on bending vibration modes
Screw thread pair driving ultrasound electric machine.
The utility model proposes it is a kind of based on bending vibration modes screw thread pair driving ultrasound electric machine, it is characterised in that：Packet
Include stator, mover, grip slipper；The stator is open tubular column, and shape is quadrangular, and interior shape is cylinder, and is provided with internal thread；Stator
Post piezoelectric ceramic piece in outer surface；Stator is fixed on grip slipper；The mover is made of main shaft and sleeve；There are two not for main shaft
It is constituted with diameter cylinders, large diameter cylinder is provided with external screw thread, and small-diameter circular cylinder is smooth surface；Sleeve is open circles
Column, length are less than small-diameter circular cylinder, and the outer diameter of sleeve is equal with the outer diameter of large diameter cylinder, the internal diameter of sleeve with it is small straight
The outer diameter of diameter cylinder is equal；Sleeve is sleeved in the small-diameter circular cylinder of main shaft；The surface of sleeve is provided with screw thread, sleeve and main shaft
It constitutes one and opens threaded cylinder；Dowel hole is provided on sleeve and small-diameter circular cylinder, the dowel in small-diameter circular cylinder
It is small on boring ratio sleeve；Sleeve and small-diameter circular cylinder are positioned by pin；Sleeve has with large diameter cylinder when original state
There is preset clearance；After the small-diameter circular cylinder set upper bush, still some is presented on except sleeve；Separately go up spiral shell in this portion
Line puts on precompression spring and precompression nut successively.
The utility model proposes the screw thread pair driving based on bending vibration modes ultrasound electric machine working method, feature exists
In：The precompression between mover and stator is adjusted by adjusting the precompression nut of mover one end；It is accessed in piezoelectric ceramic piece
Pumping signal, to drive mover in stator interior forward or reverse
After the completion of the ultrasound electric machine assembly of the screw thread pair driving based on bending vibration modes, due to referring on sleeve and main shaft
The dowel hole of specified size is set in positioning, and than slightly smaller on sleeve, rack sleeve is connected the dowel hole on main shaft by pin
It is fixed.But since sleeve pin hole is bigger, having preset clearance between sleeve and big cylinder, after pin is inserted into, sleeve is still
There is the operating range of very little.The effect of pin is to limit sleeve with main shaft in axial rotation, but allow sleeve with main shaft in axis
To translation.The small-diameter circular cylinder of the main shaft is partially due to its length is more than sleeve, therefore after collar bush upper bush, cylinder
Body still some be presented on except sleeve.Spring is put on, and uses precompression bolt compresses spring.Under the action of the spring
So that sleeve has the trend moved to cylinder.To change axial precompression between mover screw thread and stator threaded hole.It determines
Best precompression.To improve the power output and accuracy of thread pair driving ultrasonic motor.The utility model proposes screw thread pair drives
Pre-pressure loading method between dynamic ultrasonic motor stator and mover realizes on the one hand effective load of precompression can improve
The stability of motor power output and the speed of service increases and resists external disturbance ability；On the other hand the output of motor can be improved
Power and the speed for increasing motor.
The utility model proposes based on bending vibration modes screw thread pair driving ultrasound electric machine, it is characterised in that：The set
Dowel hole on cylinder is strip in an axial direction, coordinates the pin limitation sleeve with main shaft in axial rotation, but allows to cover
Cylinder is with main shaft in axial translation.Dowel hole on the sleeve is bigger than the dowel hole in mover small-diameter circular cylinder, due to it
String configuration, when precompression component applies precompression, sleeve remains to the distance of mobile very little, pre- so as to transmit
Pressure changes the precompression moved between stator screw thread pair.
The utility model proposes based on bending vibration modes screw thread pair driving ultrasound electric machine, it is characterised in that：It is described fixed
Grip slipper is fixed at the middle part of son, and grip slipper makes stator become symmetrical two parts, i.e. stator left end and stator right end；It is fixed
Piezoelectric ceramic piece is posted in four outer surfaces of sub- left end and stator right end, respectively constitutes left vibrating body and right vibrating body.It is described
Grip slipper is fixed in the middle part of stator, grip slipper makes stator become symmetrical two vibrating bodies, increases compared to previous motor
The drive area for determining one times between mover, so as to improve determining the contact condition between mover and mechanical performance.
Description of the drawings
Fig. 1 is a kind of linear ultrasonic motor system structure diagram driven based on screw thread pair described in the utility model；
Fig. 2 is a kind of linear ultrasonic motor stator structural schematic diagram driven based on screw thread pair in Fig. 1；
Fig. 3 is a kind of Structure of mover schematic diagram based on screw thread pair driving motor in Fig. 1；
Fig. 4 is a kind of mover main axle structure schematic diagram based on screw thread pair driving motor in Fig. 1；
Fig. 5 is piezoelectric ceramic piece distribution schematic diagram；
Attached figure label title：1 be stator, 11 be piezoelectric ceramic piece, 111,112,113,114 be piezoelectric ceramic piece,
12 it is circular groove, 13 be hollow quadrangular shape metal elastomer, 2 be mover, 21 be mover main shaft, 211 is major diameter
Cylinder, 212 be small-diameter circular cylinder, 22 be sleeve, 23 be dowel hole, 3 be grip slipper, 4 be pre-pressure loading device, 41 be
Precompression bolt, 42 are precompression spring.
Specific implementation mode
The utility model discloses a kind of linear ultrasonic motor of the screw thread pair driving based on bending vibration modes.
The embodiment of the utility model is discussed in detail below, the embodiment being described with reference to the drawings in text is exemplary
, it is only used for explaining the utility model, and limitations of the present invention cannot be construed to.
The utility model announce a kind of thread pair driving ultrasonic motor structural schematic diagram as shown in Figure 1, including stator 1,
Mover 2, pedestal 3 and the wherein mover of pre-pressure loading component 4 include：Mover main shaft 21, sleeve 22.Pedestal includes：End cap, bottom
Plate.Pre-pressure loading device includes：Precompression bolt 41, precompression spring 42.Pedestal 3 is assemblied in the middle of stator.Mover 2
It is assemblied in stator interior.Precompressed power apparatus 4 is assemblied in the smaller one end of mover diameter.
1 shape of stator as shown in Figure 2 is quadrangular, and cross section is square, and prism surrounding does fillet processing, and fillet is in
Between threaded hole relationship be concentric.Position has circular arc type groove to match with the arc-shaped convex on grip slipper 3 between in the stator.Stator
It is fixed by intermediate position and grip slipper 3, due to the on-link mode (OLM) of circular arc type groove, so can still be rotated in the center of circle in holding holes.It is fixed
Sub 1 left end and 1 right end of stator post piezoelectric ceramic piece on totally eight faces respectively.
Mover as shown in Figure 3 is made of main shaft 21 and sleeve 22.There are two different-diameter cylinders to constitute for main shaft, and diameter is big
Cylinder 211, be provided with external screw thread, the small cylinder 212 of diameter is smooth surface.Sleeve is hollow cylinder, and length is less than
Cylinder 212, its outer diameter is equal with the outer diameter of cylinder 211, and internal diameter is equal with the outer diameter of cylinder 212, the table of sleeve 22
Face is provided with screw thread.Sleeve 22 is sleeved on composition one on main shaft 21 and opens threaded cylinder.The specific bit on sleeve and main shaft
The dowel hole of specified size is set, than slightly smaller on sleeve, rack sleeve is connected and fixed the dowel hole on main shaft by pin
Position is still since sleeve pin hole is bigger, and after pin is inserted into, sleeve still has centainly with the thick one end cylinder of mover main shaft
Gap, therefore still have the operating range of very little.The effect of pin is limitation sleeve and main shaft in axial rotation, but allow sleeve with
Main shaft is in axial translation.The cylinder 212 of the main shaft is covered on 21 sets of main shaft partially due to its length is more than sleeve 22
Cylinder after, cylinder 212 still some be presented on except sleeve.Screw thread is opened in this section, puts on spring, and use precompressed
Power bolt compresses spring.Under the action of the spring so that sleeve has the trend moved to cylinder 212.This electric machine structure is simple,
All components can be in qualified regular producer's customization.
The pre-pressure loading component as shown in Figure 2 includes spring 42 and precompression bolt 41, in stator and mover
Between apply precompression.To drive ultrasound electric machine as shown in Figure 1, stator structure is as shown in Fig. 2, since stator is symmetrical junction
Structure, by taking stator one end as an example, piezoelectric ceramic piece is distributed as shown in figure 5, piezoelectric ceramic piece 11 (111,112,113,114) sticks respectively
Vibrating body is constituted in hollow quadrangular shape metal elastomer, when stator sleeve, which is engaged outside mover by screw thread, to be connected,
111,113 accessAnd 112,114 accessPumping signal makes 111,112 113,114 reverse polarizations of positive polarization,
To drive mover to be rotated in stator interior.It is similar, in 111,113 accessesAnd 112,114 accessPumping signal is same
Sample can drive mover to be rotated backward in stator interior.
When as shown in Figure 1 installation is complete after, by rationally adjust the precompression bolt 41 of mover one end adjust mover 2 with
Precompression between stator 1, it is best to find that the compression degree of spring can be measured by torque tester or with vernier caliper
Precompression.
The utility model proposes screw thread pair driving ultrasonic motor stator and mover between pre-pressure loading method, it is real
On the one hand the effective load for having showed precompression can improve the stability of motor power output and the speed of service, increase and resist outside
Interference performance；On the other hand the power output of motor can be improved and increase the speed of motor.
Claims (3)
1. a kind of ultrasound electric machine of the screw thread pair driving based on bending vibration modes, it is characterised in that：
Including stator（1）, mover（2）, grip slipper（3）；
The stator（1）For open tubular column, shape is quadrangular, and interior shape is cylinder, and is provided with internal thread；Stator outer surface posts pressure
Electroceramics piece；Stator（1）It is fixed on grip slipper；
The mover is by main shaft（21）And sleeve（22）Composition；There are two different-diameter cylinders to constitute for main shaft, cylinder with large diameter
Body（211）It is provided with external screw thread, small-diameter circular cylinder（212）For smooth surface；Sleeve is hollow cylinder, and length is less than minor diameter
Cylinder（212）, the outer diameter and large diameter cylinder of sleeve（211）Outer diameter it is equal, the internal diameter and small-diameter circular cylinder of sleeve
（212）Outer diameter it is equal；Sleeve（22）It is sleeved on main shaft（21）Small-diameter circular cylinder（212）On；Sleeve（22）Surface be provided with
Screw thread, sleeve（22）With main shaft（21）It constitutes one and opens threaded cylinder；
Sleeve（22）And small-diameter circular cylinder（212）On be provided with dowel hole, small-diameter circular cylinder（212）On dowel hole compare sleeve
（22）On it is small；Sleeve（22）And small-diameter circular cylinder（212）It is positioned by pin；Sleeve when original state（22）With major diameter
Cylinder（211）With preset clearance；
The small-diameter circular cylinder（212）Cover upper bush（22）Afterwards, still some is presented on sleeve（22）Except；This part
Screw thread is opened, puts on precompression spring successively（42）With precompression nut（41）.
2. the ultrasound electric machine of the screw thread pair driving according to claim 1 based on bending vibration modes, it is characterised in that：
The sleeve（22）On dowel hole be strip in an axial direction, coordinate the pin limitation sleeve axially turning with main shaft
It is dynamic, but allow sleeve with main shaft in axial translation.
3. the ultrasound electric machine of the screw thread pair driving according to claim 1 based on bending vibration modes, it is characterised in that：
It is fixed on grip slipper in the middle part of the stator（3）, grip slipper（3）Stator is set to become symmetrical two parts, i.e. stator
Left end and stator right end；Piezoelectric ceramic piece is posted in four outer surfaces of stator left end and stator right end, respectively constitutes left vibration
Body and right vibrating body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721486234.7U CN207612206U (en) | 2017-11-09 | 2017-11-09 | The ultrasound electric machine of screw thread pair driving based on bending vibration modes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721486234.7U CN207612206U (en) | 2017-11-09 | 2017-11-09 | The ultrasound electric machine of screw thread pair driving based on bending vibration modes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207612206U true CN207612206U (en) | 2018-07-13 |
Family
ID=62795171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721486234.7U Active CN207612206U (en) | 2017-11-09 | 2017-11-09 | The ultrasound electric machine of screw thread pair driving based on bending vibration modes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207612206U (en) |
Cited By (1)
| 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 |
-
2017
- 2017-11-09 CN CN201721486234.7U patent/CN207612206U/en active Active
Cited By (1)
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107707150A (en) | The ultrasound electric machine and method of work of screw thread pair driving based on bending vibration modes | |
| CN100438307C (en) | Screw thread driven polyhedron ultrasonic motor | |
| CN1873455A (en) | Integrated focusing/zooming system of optical apparatus | |
| CN1879232A (en) | Ultrasonic lead screw motor | |
| CN1676289A (en) | Combined muscular multi-directional bending flexible joint | |
| CN103023374A (en) | Inertia type piezoelectric linear motor | |
| CN102313966A (en) | Rigid load-bearing quick control reflector | |
| CN205584047U (en) | Asymmetric rotatory inertia piezo -actuator with adjustable frictional force | |
| CN207612206U (en) | The ultrasound electric machine of screw thread pair driving based on bending vibration modes | |
| CN101634354B (en) | Crank circular slide block mechanism as well as internal-combustion engine and compressor thereof | |
| CN207410248U (en) | Piezoelectricity rotation positioning platform with grand microring array kinetic characteristic | |
| CN103023373A (en) | Two-freedom-degree rotation-line motion micro ultrasonic motor | |
| CN206164396U (en) | Accurate piezoelectricity thread drive mechanism is received to declining of columnar structure | |
| CN104690743A (en) | Robot wrist joint structure based on single-stator multi-degree-of-freedom ultrasonic motor | |
| CN1982733A (en) | Conical-axis Hooke's hinge | |
| CN109027586B (en) | Large-torque camera holder | |
| CN100492864C (en) | Multi freedom degree piezo-electric ceramic stick miniaturized motor based on composite excitation mode | |
| CN103000231B (en) | Z-theta x-theta y three-degree-of-freedom high-precision worktable resistant to bending moment | |
| CN204505286U (en) | A kind of wrist joint of robot structure based on single stator multiple freedom degrees ultrasound motor | |
| CN110995058A (en) | Novel piezoelectric rotation precision driving platform based on parasitic inertia principle | |
| CN208474055U (en) | A kind of reciprocating pump of conchoid structure | |
| CN209811371U (en) | Double-lead-screw driving engraving machine | |
| CN2847685Y (en) | Grooved metal square colume piezoelectric sheet composite supersonic micro motor | |
| CN209313747U (en) | A kind of alternating step piezoelectric stick-slip driver with bionical awn of wheat friction surface | |
| CN219734123U (en) | Ball screw anti-shake device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |