CN208707551U - Spoke type rotor ultrasound electric machine based on longitudinal vibration - Google Patents
Spoke type rotor ultrasound electric machine based on longitudinal vibration Download PDFInfo
- Publication number
- CN208707551U CN208707551U CN201821269822.XU CN201821269822U CN208707551U CN 208707551 U CN208707551 U CN 208707551U CN 201821269822 U CN201821269822 U CN 201821269822U CN 208707551 U CN208707551 U CN 208707551U
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- rotor
- rotary table
- disk
- stator
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- 238000002604 ultrasonography Methods 0.000 title claims abstract description 23
- 239000002184 metal Substances 0.000 claims abstract description 36
- 239000011159 matrix material Substances 0.000 claims abstract description 22
- 239000000919 ceramic Substances 0.000 claims abstract description 11
- 238000003801 milling Methods 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005452 bending Methods 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000002045 lasting effect Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 238000012913 prioritisation Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The utility model discloses a kind of spoke type rotor ultrasound electric machine based on longitudinal vibration comprising stator, the first rotor, the second rotor, rotation axis, spring, adjusts ring and stop collar；Stator includes metallic matrix and four piezoelectric ceramic pieces；The first rotor, the second rotor include rotary table, disk and several metal spokes；The self-centering cooperation of the conical surface with rotary table in the first rotor, the second rotor respectively of metallic matrix both ends applies precompression between stator and two rotors by spring, adjusting ring, stop collar.Stretching motion when the utility model is by stator longitudinal vibration be converted into the first rotor, in the second rotor metal spoke bending, the first rotor, the second rotor is set to generate torsion, rotor is set to generate the rotation a little to stator when stator is separated with rotor, effect of inertia lower rotor part unitary rotation, using flexible, control are simple.
Description
Technical field
The utility model relates to ultrasound electric machine field more particularly to a kind of spoke type rotor ultrasound electric machines based on longitudinal vibration.
Background technique
Ultrasound electric machine is a kind of novel actuation that the inverse piezoelectric effect realization electric energy using piezoelectric material is converted to mechanical energy
Device, wherein single mode ultrasound electric machine is a kind of ultrasound electric machine for specific demands such as high-torque, single rotation directions, utilizes single vibration
Dynamic model state overcomes the problems, such as multiple modal resonance frequencies matchings, tool when general Design of Ultrasonic Motor by frictional force drives rotor
Have broad application prospects.
Mode conversion type ultrasound electric machine is a kind of typical single mode ultrasound electric machine, and drive is generated by mode conversion mechanism
The required mode of oscillation of turn.This mode of oscillation needs to carry out special designing to the mode conversion mechanism on stator, makes base
The resonant frequency of body is close with the resonant frequency of part, when applying single-phase sinusoidal signal to stator, so that it may obtain part
Complex vibration, so that particle is formed standing wave elliptic motion.Theoretically, the frequency of the two mode is closer to compound
Vibration is stronger, and driving effect is also better.But in fact, by the study found that for some mode conversions based on longitudinal vibration
Type motor, such as ZL201010017668.9, ZL200910086400.8, there is a problem of two mode be difficult to adjust it is close, eventually
Form that two vibration shapes are similar, composite mode of frequency phase-difference 1kHz ~ 3kHz, it is difficult to reach optimal drive state, while two moulds
The problems such as frequency mismatch of state may aggravate friction in stator, fever, power is caused to dissipate consumption.
The final purpose of mode conversion be in order to make to generate tangential and normal direction componental movement at contact point under single excitation,
To synthesize elliptic motion, the movement of normal direction, the local mode obtained by mode conversion are provided by matrix longitudinal vibration under normal circumstances
Tangential movement is provided.Most researchers before ignore rotor in the design for having focused on stator of concern
Design.Tangential motion needed for practical upper rotor part also can produce synthesis elliptic motion under given conditions.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of base for defect involved in background technique
In the spoke type rotor ultrasound electric machine of longitudinal vibration.
The utility model uses following technical scheme to solve above-mentioned technical problem:
Spoke type rotor ultrasound electric machine based on longitudinal vibration, comprising stator, the first rotor, the second rotor, rotation axis, spring,
Adjust ring and stop collar；
The stator includes metallic matrix and four piezoelectric ceramic pieces；
The metallic matrix is the hollow circuit cylinder of both ends open, and middle part is equipped with step, on the wall surface of step there are four millings
Plane, and the metallic matrix is about its central symmetry；
Four piezoelectric ceramic pieces are arranged in a one-to-one correspondence in four planes of the metallic matrix step, for receiving
External drive signal generates vibration；
The first rotor, the second rotor include rotary table, disk and several metal spokes；
The rotary table, disk coaxial arrangement, the radius of rotary table are less than disk, and one side of the rotary table far from disk is the conical surface, and
Rotary table, disk axis on be equipped with the through-hole passed through for the rotation axis；
The disk is uniformly provided with and the one-to-one limiting slot of the metal spoke, the circle on the end face of rotary table
It is uniformly provided on the side wall of platform and the one-to-one limiting slot of the metal spoke；Described metal spoke one end is arranged on disk
It is connected in its corresponding limiting slot with the disk, the other end of metal spoke is arranged on rotary table in its corresponding limiting slot,
It is connected with the rotary table；Projection of the metal spoke on disk is and projection of the rotary table on disk is tangent；
The rotation axis sequentially pass through the through-hole on the first rotor disk, the through-hole on the first rotor rotary table, metallic matrix,
The through-hole on through-hole, the second rotor discs on second rotor rotary table, wherein rotation axis and through-hole on the first rotor disk,
Through-hole on the first rotor rotary table, the through-hole on the second rotor rotary table, the equal clearance fit of through-hole on the second rotor discs, metal
The self-centering cooperation of the conical surface with the conical surface of the first rotor rotary table, the second rotor rotary table respectively of the both ends of matrix；
The stop collar is arranged in the rotation axis and is connected close to one end of the second rotor discs and the rotation axis, uses
In resisting end face of the second rotor turntable far from the first rotor, prevent the second rotor from sliding in and out；
The threaded one end that ring is adjusted with the rotation axis close to the first rotor disk connects；The spring pocket is described
In rotation axis, one end and adjusting ring offsets, the other end and the first rotor disk offset far from bitrochanteric end face；
The pretightning force for adjusting ring and being used to adjust the spring；
The first rotor, the second rotor are symmetrical in mirror surface.
The further prioritization scheme of spoke type rotor ultrasound electric machine as the utility model based on longitudinal vibration, described first turn
Disk is equipped with limiting groove far from the center of rotary table side in son, the second rotor, wherein the limiting groove of the first rotor disk
For placing spring, the limiting groove of the second rotor discs is for placing stop collar.
The further prioritization scheme of spoke type rotor ultrasound electric machine as the utility model based on longitudinal vibration, described first turn
The number of metal spoke is 4 in son, the second rotor.
The invention also discloses a kind of working methods for being somebody's turn to do the spoke type rotor ultrasound electric machine based on longitudinal vibration, wherein
The course of work of the first rotor is as follows:
When applying sinusoidal signal to piezoelectric ceramic piece, stator is in single order longitudinal vibration state, within a vibration period:
Before stator elongation, the metal spoke of the first rotor is bent since the precompression between stator and the first rotor generates, and is made
The disk of the first rotor generates pre torqued relative to its rotary table；
When stator elongation, the bending aggravation of the first rotor metal spoke drives its disk to rotate a little relative to rotary table；
After stator shortens, stator is separated with the first rotor, and the disk of the first rotor continues to reverse under inertia, and first turn
The elastic potential energy that the metal spoke bending of son generates is released the rotational kinetic energy for being converted into its rotary table, so that the first rotor
Rotation a little relative to stator occurs for rotary table；
The first rotor shows as the lasting macroscopic view rotation relative to stator under high-frequency reciprocating effect.
The utility model compared with the prior art by using the above technical solution, has following technical effect that
Ultrasound electric machine uses patch type structure in the utility model, and piezoelectric ceramic piece works under d31 mode, compared to folder
Heart type structure eliminates the structures such as pretension bolt, easy to assembly, is easy to be miniaturized；Stator need to only consider longitudinal vibration frequency in design
Rate does not have to carry out the adjusting of mode consistency to multiple mode, simplifies stator design；The metal spoke of spoke type rotor, which has, to be put
The effect of big displacement, metal spoke is longer, and amplification effect is stronger.In addition, the ultrasound electric machine structure in the utility model is with non-
Often good symmetry, the symmetry in this structure control characteristic and impedance operator are conducive to the controller design of motor.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural profile illustration of the utility model；
Fig. 3 is the structural schematic diagram of the utility model stator；
Fig. 4 (a), Fig. 4 (b) are that metal spoke is in counterclockwise, just in the utility model the first rotor and the second rotor respectively
Structural schematic diagram when hour hands are distributed；
Fig. 5 is the utility model the first rotor and bitrochanteric operation schematic diagram.
In figure, 1- rotation axis, 2- adjusts ring, 3- spring, 4- the first spoke type rotor, 5- metallic matrix, 6- piezoelectric ceramics
Piece, 7- the second spoke type rotor, 8- limiting groove, 9- stop collar, 10- disk, 11- rotary table, 12- metal spoke.
Specific embodiment
The technical solution of the utility model is described in further detail with reference to the accompanying drawing:
The utility model can be embodied in many different forms, and should not be assumed that be limited to the embodiments described herein.
On the contrary, it is thorough and complete to these embodiments are provided so that the disclosure, and this reality will be given full expression to those skilled in the art
With novel range.In the accompanying drawings, for the sake of clarity it is exaggerated component.
As shown in Figure 1, the utility model proposes a kind of spoke of the spoke type rotor ultrasound electric machine based on longitudinal vibration based on longitudinal vibration
Formula rotor ultrasound electric machine comprising stator, the first rotor, the second rotor, rotation axis, spring, adjusts ring and stop collar.
The stator includes metallic matrix and four piezoelectric ceramic pieces；As shown in figure 3, the metallic matrix is both ends open
Hollow circuit cylinder, middle part is equipped with step, and there are four planes for milling on the wall surface of step, and the metallic matrix is about its center pair
Claim；Four piezoelectric ceramic pieces are arranged in a one-to-one correspondence in four planes of the metallic matrix step, for receiving outside
Pumping signal generates vibration.
The first rotor, the second rotor include rotary table, disk and several metal spokes；The rotary table, disk are coaxial
Setting, the radius of rotary table are less than disk, and one side of the rotary table far from disk is the conical surface, and is equipped with confession on the axis of rotary table, disk
The through-hole that the rotation axis passes through；The disk is uniformly provided with one-to-one with the metal spoke on the end face of rotary table
Limiting slot is uniformly provided with and the one-to-one limiting slot of the metal spoke on the side wall of the rotary table；The metal spoke one
End is arranged on disk in its corresponding limiting slot and the disk is connected, it is arranged on rotary table in the other end of metal spoke
It is connected in corresponding limiting slot with the rotary table；Projection of the metal spoke on disk is and the rotary table is on disk
Projection it is tangent.
It can be in such a way that the limit hole on disk and rotary table injects epoxide-resin glue, so that metal spoke and circle
Disk, rotary table are connected.
Fig. 4 (a), Fig. 4 (b) are that metal spoke is in counterclockwise, just in the utility model the first rotor and the second rotor respectively
Structural schematic diagram when hour hands are distributed, the number of metal spoke is 4 here.
As shown in Fig. 2, the rotation axis sequentially passes through through-hole on the first rotor disk, logical on the first rotor rotary table
Hole, metallic matrix, the through-hole on the second rotor rotary table, the through-hole on the second rotor discs, wherein rotation axis and the first rotor circle
Between through-hole on disk, the through-hole on the first rotor rotary table, the through-hole on the second rotor rotary table, the through-hole on the second rotor discs are equal
Gap cooperation, the self-centering cooperation of the conical surface with the conical surface of the first rotor rotary table, the second rotor rotary table respectively of the both ends of metallic matrix；Institute
It states stop collar the rotation axis is set and be connected close to one end of the second rotor discs and the rotation axis, it is described for resisting
End face of the second rotor turntable far from the first rotor prevents the second rotor from sliding in and out；The adjusting ring and the rotation axis are leaned on
The threaded one end connection of nearly the first rotor disk；In the rotation axis, one end and the adjusting ring offset, separately the spring pocket
One end and the first rotor disk offset far from bitrochanteric end face；The preload for adjusting ring and being used to adjust the spring
Power；The first rotor, the second rotor are symmetrical in mirror surface.
Disk is equipped with limiting groove far from the center of rotary table side in the first rotor, the second rotor, wherein first
The limiting groove of rotor discs is for placing spring, and the limiting groove of the second rotor discs is for placing stop collar.
The invention also discloses it is a kind of should spoke type rotor ultrasound electric machine based on longitudinal vibration working method, described the
The course of work of one rotor is as follows:
When applying sinusoidal signal to piezoelectric ceramic piece, stator is in single order longitudinal vibration state, within a vibration period:
As shown in figure 5, firstly, the first rotor is in undeformed state；
Then, before stator elongation, the metal spoke of the first rotor is curved since the precompression between stator and the first rotor generates
Song makes the disk of the first rotor generate pre torqued relative to its rotary table；When stator elongation, the bending of the first rotor metal spoke
Aggravation, drives its disk to rotate a little relative to rotary table；
Then, after stator shortens, stator is separated with the first rotor, and the disk of the first rotor continues to reverse under inertia,
The elastic potential energy that the metal spoke bending of the first rotor generates is released the rotational kinetic energy for being converted into its rotary table, so that first
Rotation a little relative to stator occurs for the rotary table of rotor.
The first rotor shows as the lasting macroscopic view rotation relative to stator under high-frequency reciprocating effect.
Bitrochanteric rotary principle is similar with the first rotor, is not repeated herein.
Those skilled in the art can understand that unless otherwise defined, all terms used herein (including skill
Art term and scientific term) there is meaning identical with the general understanding of those of ordinary skill in the utility model fields
Justice.It should also be understood that those terms such as defined in the general dictionary should be understood that with upper with the prior art
The consistent meaning of meaning hereinafter, and unless defined as here, will not with idealization or meaning too formal come
It explains.
Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into
One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model
The utility model processed, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done,
It should be included within the scope of protection of this utility model.
Claims (3)
1. the spoke type rotor ultrasound electric machine based on longitudinal vibration, which is characterized in that include stator, the first rotor, the second rotor, rotation
Axis, adjusts ring and stop collar at spring；
The stator includes metallic matrix and four piezoelectric ceramic pieces；
The metallic matrix is the hollow circuit cylinder of both ends open, and middle part is equipped with step, plane there are four millings on the wall surface of step,
And the metallic matrix is about its central symmetry；
Four piezoelectric ceramic pieces are arranged in a one-to-one correspondence in four planes of the metallic matrix step, for receiving outside
Pumping signal generates vibration；
The first rotor, the second rotor include rotary table, disk and several metal spokes；
The rotary table, disk coaxial arrangement, the radius of rotary table are less than disk, and one side of the rotary table far from disk is the conical surface, and rotary table,
The through-hole passed through for the rotation axis is equipped on the axis of disk；
The disk be uniformly provided on the end face of rotary table with the one-to-one limiting slot of the metal spoke, the rotary table
It is uniformly provided on side wall and the one-to-one limiting slot of the metal spoke；It is right that its is arranged on disk in described metal spoke one end
It is connected in the limiting slot answered with the disk, the other end of metal spoke is arranged on rotary table in its corresponding limiting slot and institute
Rotary table is stated to be connected；Projection of the metal spoke on disk is and projection of the rotary table on disk is tangent；
The rotation axis sequentially passes through the through-hole on the first rotor disk, the through-hole on the first rotor rotary table, metallic matrix, second
The through-hole on through-hole, the second rotor discs on rotor rotary table, wherein rotation axis and through-hole on the first rotor disk, first
Through-hole on rotor rotary table, the through-hole on the second rotor rotary table, the equal clearance fit of through-hole on the second rotor discs, metallic matrix
The both ends self-centering cooperation of the conical surface with the conical surface of the first rotor rotary table, the second rotor rotary table respectively；
The stop collar is arranged in the rotation axis and is connected close to one end of the second rotor discs and the rotation axis, for supporting
It states end face of the second rotor turntable far from the first rotor, prevent the second rotor from sliding in and out in residence；
The threaded one end that ring is adjusted with the rotation axis close to the first rotor disk connects；The spring pocket is in the rotation
On axis, one end and adjusting ring offsets, the other end and the first rotor disk offset far from bitrochanteric end face；It is described
Adjust the pretightning force that ring is used to adjust the spring；
The first rotor, the second rotor are symmetrical in mirror surface.
2. the spoke type rotor ultrasound electric machine according to claim 1 based on longitudinal vibration, which is characterized in that described first turn
Disk is equipped with limiting groove far from the center of rotary table side in son, the second rotor, wherein the limiting groove of the first rotor disk
For placing spring, the limiting groove of the second rotor discs is for placing stop collar.
3. the spoke type rotor ultrasound electric machine according to claim 1 based on longitudinal vibration, which is characterized in that described first turn
The number of metal spoke is 4 in son, the second rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821269822.XU CN208707551U (en) | 2018-08-08 | 2018-08-08 | Spoke type rotor ultrasound electric machine based on longitudinal vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821269822.XU CN208707551U (en) | 2018-08-08 | 2018-08-08 | Spoke type rotor ultrasound electric machine based on longitudinal vibration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208707551U true CN208707551U (en) | 2019-04-05 |
Family
ID=65940936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821269822.XU Withdrawn - After Issue CN208707551U (en) | 2018-08-08 | 2018-08-08 | Spoke type rotor ultrasound electric machine based on longitudinal vibration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208707551U (en) |
-
2018
- 2018-08-08 CN CN201821269822.XU patent/CN208707551U/en not_active Withdrawn - After Issue
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190405 Effective date of abandoning: 20231107 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190405 Effective date of abandoning: 20231107 |