CN105048865A - Elastic blade type radial transduction type single-phase supersonic motor - Google Patents
Elastic blade type radial transduction type single-phase supersonic motor Download PDFInfo
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- CN105048865A CN105048865A CN201510404858.9A CN201510404858A CN105048865A CN 105048865 A CN105048865 A CN 105048865A CN 201510404858 A CN201510404858 A CN 201510404858A CN 105048865 A CN105048865 A CN 105048865A
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- metallic elastic
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- supersonic motor
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Abstract
The invention provides an elastic blade type radial transduction type single-phase supersonic motor, including metal elastic blades, metal elastic thin rings, piezoelectric ceramics, a fixing plate, a rotating shaft, an end cover and a pedestal. The piezoelectric ceramics are ring-shaped, positioned in the metal elastic thin rings, and polarized in the radial direction. The metal elastic thin rings exert radial prestress on the piezoelectric ceramics. The metal elastic blades are uniformly distributed on the outer sides of the metal elastic thin rings in the circumferential direction, are directly contacted with the inner side of the end cover and maintain elastic bending deformation. The end cover is pushed by the metal elastic blades. The end cover and the rotating shaft rotate relative to the pedestal. The elastic blade type radial transduction type single-phase supersonic motor is beneficial for improving the electro-mechanical transformation and the power capacity, only requires single-phase power driving, and maintains the advantage of being simple of a driving power.
Description
Technical field
The present invention relates to the single-phase supersonic motor of the radial transducing type of a kind of spring leaf formula.
Background technology
Supersonic motor have employed drive principle diverse with traditional electrical magneto, does not need to use coil, utilizes the inverse piezoelectric effect of piezoelectric ceramic to excite the ultrasonic vibration of stator elastomeric, and by the friction coupling output torque between rotor.Therefore, supersonic motor is compared electromagnetic machine and is had that dynamic response is fast, low speed high torque, cut off self-lock, the advantage such as Electro Magnetic Compatibility is good, in non-continuous movement field, precise hard_drawn tuhes field, the occasion such as intelligent robot have broad application prospects.
Supersonic motor structural design is flexible, utilizes different piezoelectric ceramic polarization and the mode of oscillation of metal elastic gonosome, can construct the supersonic motor of different structure.Single-phase standing wave type ultrasonic motor is one wherein.Single-phase standing wave type ultrasonic motor structure is simple, be easy to processing, and only need one group of piezoelectric ceramic single phase poaer supply to motivate a kind of mode of oscillation, then the elliptic motion of stator end particle is induced by modes such as contact, fluting or punchings, driving rotor rotates, therefore driving power is simple, is easy to realize Miniaturization Design.But there is the problem that power capacity is little, conversion efficiency is low in single-phase standing wave type ultrasonic motor.
Summary of the invention
The present invention is directed to the defect that existing single-phase standing wave type ultrasonic motor power capacity is little, conversion efficiency is low, provide the radial transducing type of a kind of spring leaf formula single-phase supersonic motor.
For solving the problems of the technologies described above, the single-phase supersonic motor of the radial transducing type of spring leaf formula of the present invention adopts following technical scheme:
The single-phase supersonic motor of the radial transducing type of a kind of spring leaf formula, comprise metallic elastic blade, the thin annulus of metallic elastic, piezoelectric ceramic, fixed head, rotating shaft, end cap, base, metallic elastic blade, the thin annulus of metallic elastic, piezoelectric ceramic is located between base and fixed head, described piezoelectric ceramic is annular and is placed in the inside of the thin annulus of described metallic elastic, the outside of described piezoelectric ceramic directly contacts with the inner side of the thin annulus of described metallic elastic, be tight fit mode between described piezoelectric ceramic and the thin annulus of described metallic elastic, the outside of the thin annulus of described metallic elastic is provided with some metallic elastic blades, and metallic elastic blade directly contacts with the inner side of described end cap and keeps elastic bending deflection, described end cap connection rotating shaft.
Further, base and end cap are formed with chamber, be provided with metallic elastic blade, the thin annulus of metallic elastic, piezoelectric ceramic, fixed head in described chamber, base is hollow structure, and described rotating shaft is assemblied in the hollow space of base by clutch shaft bearing part and the second bearing part.
Further, be provided with the first resilient non-conductive pad between described piezoelectric ceramic and fixed head, described first resilient non-conductive pad is annular.
Further, be provided with the second resilient non-conductive pad between described piezoelectric ceramic and base, described second resilient non-conductive pad is annular.
Further, described base and fixed head are connected and fixed by fastening bolt, and described rotating shaft is connected by hold-down screw with end cap.
Further, described fastening bolt is circumferentially evenly arranged, and the quantity of fastening bolt is four, and described hold-down screw is circumferentially evenly arranged, and the quantity of hold-down screw is four.
Further, also comprise the first wire and the second wire, described base is provided with the first through hole and the second through hole, the inner side of described piezoelectric ceramic is fixed in one end of described first wire, the other end of described first wire causes outside by the first through hole, the bottom of the thin annulus of metallic elastic is fixed in one end of described second wire, and the other end of described second wire causes outside by the second through hole.
Further, by giving the single-phase alternating current of the first wire and the second wire input characteristic frequency, piezoelectric ceramic and the thin annulus of metallic elastic are made radial expansion and are vibrated and drive metallic elastic blade to promote end cap rotation, and then drive rotating shaft to rotate.
Further, described piezoelectric ceramic radially polarizes.
Further, described metallic elastic blade is evenly arranged 8 ~ 12 along the external circumferential of the thin annulus of described metallic elastic, and the angle of the normal of the installation fixing point on described metallic elastic blade and the thin annulus of described metallic elastic is 45 ° ~ 50 °.
The single-phase supersonic motor of the radial transducing type of spring leaf formula of the present invention, has following beneficial effect:
First, adopt the piezoelectric ceramic radially polarized, friction tight mode is adopted directly to contact between piezoelectric ceramic and the thin annulus of metallic elastic, radial prestressing force is applied to piezoelectric ceramic by the thin annulus of metallic elastic, contribute to improving electromechanical conversion efficiency and power capacity, as long as single phase poaer supply drives simultaneously, maintain the simple advantage of driving power.
Secondly, be evenly arranged multi-disc metallic elastic blade along the thin annulus external circumferential of metallic elastic, multi-disc metallic elastic blade jointly promotes end cap and then drives rotating shaft to rotate, and has both added the motive force of end cap and rotating shaft acquisition, additionally reduce wearing and tearing, be conducive to stability and the life-span of improving motor operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the single-phase supersonic motor of the radial transducing type of spring leaf formula of the present invention;
Fig. 2 is piezoelectric ceramic three-dimensional structure and polarised direction schematic diagram in embodiment;
Fig. 3 be in embodiment metallic elastic blade along the thin annulus of metallic elastic circumferentially mode schematic diagram;
Fig. 4 is direct contact resilient flexural deformation schematic diagram inside metallic elastic blade and end cap in embodiment;
In figure: 1, metallic elastic blade, 2, the thin annulus of metallic elastic, 3, piezoelectric ceramic, 4, fixed head, the 5, first resilient non-conductive pad, the 5 ', second resilient non-conductive pad, 6, rotating shaft, 7, clutch shaft bearing part, the 7 ', second bearing part, 8, hold-down screw, 9, end cap, 10, fastening bolt, 11, base, the 12, first wire, the 12 ', second wire, 13, the first through hole, the 13 ', second through hole.
Embodiment
According to following embodiment, the present invention may be better understood.But those skilled in the art will readily understand, the content described by embodiment only for illustration of the present invention, and should can not limit the present invention described in detail in claims yet.
Refer to shown in Fig. 1, the single-phase supersonic motor of the radial transducing type of spring leaf formula of embodiment, comprises metallic elastic blade 1, the thin annulus 2 of metallic elastic, piezoelectric ceramic 3, fixed head 4, rotating shaft 6, end cap 9 and base 11.Piezoelectric ceramic 3 is annular, and be placed in the inside of the thin annulus 2 of metallic elastic, the outside of piezoelectric ceramic 3 directly contacts with the inner side of the thin annulus 2 of metallic elastic, be tight fit mode between piezoelectric ceramic 3 and the thin annulus 2 of metallic elastic, apply radial prestressing force to piezoelectric ceramic 3 by the thin annulus of metallic elastic 2.Metallic elastic blade 1 is installed on the outside of the thin annulus 2 of metallic elastic, external circumferential along the thin annulus 2 of metallic elastic is evenly arranged 8 ~ 12 metallic elastic blades 1, metallic elastic blade 1 directly contacts with the inner side of end cap 9 and keeps elastic bending deflection, metallic elastic blade 1 promotes end cap 9 and rotates, and then drives rotating shaft 6 to rotate.
End cap 9 and rotating shaft 6 are rotated relative to base 11.Also comprise clutch shaft bearing part 7 and the second bearing part 7 ', for connecting base 11 and rotating shaft 6.Clutch shaft bearing part 7 is arranged between the top of base 11 and rotating shaft 6, second bearing part 7 ' is arranged between the bottom of base 11 and rotating shaft 6, clutch shaft bearing part 7 contacts with base 11 with the outer ring of the second bearing part 7 ', clutch shaft bearing part 7 contacts with rotating shaft 6 with the inner ring of the second bearing part 7 ', makes rotating shaft 6 can do rotary motion freely.
Also comprising the first resilient non-conductive pad 5, first resilient non-conductive pad 5 is annular, and is arranged between piezoelectric ceramic 3 and fixed head 4.First resilient non-conductive pad 5 plays the effect of insulation, also plays the effect of shock insulation simultaneously, also plays the effect of protection piezoelectric ceramic piece 3.
Also comprising the second resilient non-conductive pad 5 ', the second resilient non-conductive pad 5 ' is annular, and is arranged between piezoelectric ceramic 3 and base 11.Second resilient non-conductive pad 5 ' plays the effect of insulation, also plays the effect of shock insulation simultaneously, also plays the effect of protection piezoelectric ceramic piece 3.
Also comprise fastening bolt 10, fastening bolt 10 is connected and fixed base 11 and fixed head 4, by regulating the degree of tightness of fastening bolt 10, the first resilient non-conductive pad 5 and the second resilient non-conductive pad 5 ' can be regulated to be applied to the size of the chucking power on piezoelectric ceramic 3.Wherein, in embodiment, the quantity of fastening bolt 10 is four.Also comprise hold-down screw 8, hold-down screw 8 connection rotating shaft 6 and end cap 9, be passed to the rotary impetus that end cap 9 obtains in rotating shaft 6.Wherein, in the present invention, the quantity of hold-down screw 8 is four.
Base 11 is provided with the first through hole 13 and the second through hole 13 ', for drawing wire.Also comprise the first wire 12 and the second wire 12 ', the inner side of piezoelectric ceramic 3 is fixed in first wire 12 one end, the other end causes outside by the first through hole 13, and the bottom of the thin annulus 2 of metallic elastic is fixed in second wire 12 ' one end, and the other end causes outside by the second through hole 13 '.By giving the single-phase alternating current of the first wire 12 and the second wire 12 ' input characteristic frequency, piezoelectric ceramic 3 and the thin annulus 2 of metallic elastic can be made radial expansion and vibrate and drive metallic elastic blade 1 to promote end cap 9 and rotate.8 ~ 12 metallic elastic blades 1 be evenly arranged along metallic elastic thin annulus 2 external circumferential promote end cap 9 simultaneously and rotate, and add the motive force that end cap 9 obtains, and are also conducive to improving the stability that motor runs.
Fig. 2 is three-dimensional structure and the polarised direction schematic diagram of piezoelectric ceramic 3, and piezoelectric ceramic 3 radially polarizes, and in figure, arrow represents polarised direction.
Fig. 3 is that metallic elastic blade 1 is along the thin annulus 2 of metallic elastic circumferentially mode schematic diagram, metallic elastic blade 1 is evenly arranged 8 ~ 12 along the external circumferential of the thin annulus 2 of metallic elastic, and metallic elastic blade 1 is 45 ° ~ 50 ° with the angle of the normal of the installation fixing point on the thin annulus 2 of metallic elastic.
Fig. 4 be metallic elastic blade 1 with end cap 9 inside direct contact resilient flexural deformation schematic diagram, in figure, metallic elastic blade 1 shown in dotted line represent not with state during end cap 9 interior side contacts, metallic elastic blade 1 shown in solid line represents and directly contacts the state that elastic bending deflection occurs afterwards inside end cap 9.
Embodiment adopts the piezoelectric ceramic 3 radially polarized, friction tight mode is adopted directly to contact between piezoelectric ceramic 3 and the thin annulus of metallic elastic 2, apply radial prestressing force to piezoelectric ceramic 3 by the thin annulus of metallic elastic 2, contribute to improving electromechanical conversion efficiency and power capacity, as long as single phase poaer supply drives, maintain the simple advantage of driving power.Simultaneously, multi-disc metallic elastic blade 1 is evenly arranged along metallic elastic thin annulus 2 external circumferential, multi-disc metallic elastic blade 1 jointly promotes end cap 9 and then drives rotating shaft 6 to rotate by end cap 9, both the motive force of end cap 9 and rotating shaft 6 acquisition had been added, additionally reduce wearing and tearing, be conducive to stability and the life-span of improving motor operation.
Claims (10)
1. the single-phase supersonic motor of the radial transducing type of spring leaf formula, it is characterized in that: comprise metallic elastic blade, the thin annulus of metallic elastic, piezoelectric ceramic, fixed head, rotating shaft, end cap, base, metallic elastic blade, the thin annulus of metallic elastic, piezoelectric ceramic is located between base and fixed head, described piezoelectric ceramic is annular and is placed in the inside of the thin annulus of described metallic elastic, the outside of described piezoelectric ceramic directly contacts with the inner side of the thin annulus of described metallic elastic, be tight fit mode between described piezoelectric ceramic and the thin annulus of described metallic elastic, the outside of the thin annulus of described metallic elastic is provided with some metallic elastic blades, and metallic elastic blade directly contacts with the inner side of described end cap and keeps elastic bending deflection, described end cap connection rotating shaft.
2. the single-phase supersonic motor of the radial transducing type of spring leaf formula as claimed in claim 1, it is characterized in that: base and end cap are formed with chamber, metallic elastic blade, the thin annulus of metallic elastic, piezoelectric ceramic, fixed head is provided with in described chamber, base is hollow structure, and described rotating shaft is assemblied in the hollow space of base by clutch shaft bearing part and the second bearing part.
3. the single-phase supersonic motor of the radial transducing type of spring leaf formula as claimed in claim 1, it is characterized in that: be provided with the first resilient non-conductive pad between described piezoelectric ceramic and fixed head, described first resilient non-conductive pad is annular.
4. the single-phase supersonic motor of the radial transducing type of spring leaf formula as claimed in claim 1, it is characterized in that: be provided with the second resilient non-conductive pad between described piezoelectric ceramic and base, described second resilient non-conductive pad is annular.
5. the single-phase supersonic motor of the radial transducing type of spring leaf formula as claimed in claim 1, it is characterized in that: described base and fixed head are connected and fixed by fastening bolt, described rotating shaft is connected by hold-down screw with end cap.
6. the single-phase supersonic motor of the radial transducing type of spring leaf formula as claimed in claim 5, it is characterized in that: described fastening bolt is circumferentially evenly arranged, the quantity of fastening bolt is four, and described hold-down screw is circumferentially evenly arranged, and the quantity of hold-down screw is four.
7. the single-phase supersonic motor of the radial transducing type of the spring leaf formula as described in any one of claim 1-6, it is characterized in that: also comprise the first wire and the second wire, described base is provided with the first through hole and the second through hole, the inner side of described piezoelectric ceramic is fixed in one end of described first wire, the other end of described first wire causes outside by the first through hole, the bottom of the thin annulus of metallic elastic is fixed in one end of described second wire, and the other end of described second wire causes outside by the second through hole.
8. the single-phase supersonic motor of the radial transducing type of spring leaf formula as claimed in claim 7, it is characterized in that: by inputting the single-phase alternating current of characteristic frequency to the first wire and the second wire, piezoelectric ceramic and the thin annulus of metallic elastic are made radial expansion and are vibrated and drive metallic elastic blade to promote end cap rotation, and then drive rotating shaft to rotate.
9. the single-phase supersonic motor of the radial transducing type of the spring leaf formula as described in any one of claim 1-6, is characterized in that: described piezoelectric ceramic radially polarizes.
10. the single-phase supersonic motor of the radial transducing type of the spring leaf formula as described in any one of claim 1-6, it is characterized in that: described metallic elastic blade is evenly arranged 8 ~ 12 along the external circumferential of the thin annulus of described metallic elastic, the angle of the normal of the installation fixing point on described metallic elastic blade and the thin annulus of described metallic elastic is 45 ° ~ 50 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510404858.9A CN105048865A (en) | 2015-07-10 | 2015-07-10 | Elastic blade type radial transduction type single-phase supersonic motor |
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| CN201510404858.9A CN105048865A (en) | 2015-07-10 | 2015-07-10 | Elastic blade type radial transduction type single-phase supersonic motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105490581A (en) * | 2015-11-24 | 2016-04-13 | 西安交通大学 | High-precision large-torque piezoelectric rotary actuation apparatus with H-type structure and method |
| CN105577027A (en) * | 2016-03-11 | 2016-05-11 | 西安创联超声技术有限责任公司 | Hollow shaftless high overload rotary travelling wave ultrasonic motor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104079205A (en) * | 2014-07-18 | 2014-10-01 | 环一军 | Multi-vibration-piece type standing wave type ultrasonic motor |
| CN204316377U (en) * | 2014-12-12 | 2015-05-06 | 扬州大学 | Bilateral driving rotary type travelling wave ultrasonic motor |
| CN104734561A (en) * | 2015-04-03 | 2015-06-24 | 东南大学 | Elastic blade type parallel ultrasonic motor |
-
2015
- 2015-07-10 CN CN201510404858.9A patent/CN105048865A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104079205A (en) * | 2014-07-18 | 2014-10-01 | 环一军 | Multi-vibration-piece type standing wave type ultrasonic motor |
| CN204316377U (en) * | 2014-12-12 | 2015-05-06 | 扬州大学 | Bilateral driving rotary type travelling wave ultrasonic motor |
| CN104734561A (en) * | 2015-04-03 | 2015-06-24 | 东南大学 | Elastic blade type parallel ultrasonic motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105490581A (en) * | 2015-11-24 | 2016-04-13 | 西安交通大学 | High-precision large-torque piezoelectric rotary actuation apparatus with H-type structure and method |
| CN105577027A (en) * | 2016-03-11 | 2016-05-11 | 西安创联超声技术有限责任公司 | Hollow shaftless high overload rotary travelling wave ultrasonic motor |
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Application publication date: 20151111 |