CN203596763U - Longitudinal-bending-torsional composite rotary supersonic wave motor piezoelectric oscillator - Google Patents
Longitudinal-bending-torsional composite rotary supersonic wave motor piezoelectric oscillator Download PDFInfo
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- CN203596763U CN203596763U CN201320607778.XU CN201320607778U CN203596763U CN 203596763 U CN203596763 U CN 203596763U CN 201320607778 U CN201320607778 U CN 201320607778U CN 203596763 U CN203596763 U CN 203596763U
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Abstract
The utility model relates to a longitudinal-bending-torsional composite rotary supersonic wave motor piezoelectric oscillator belonging to the supersonic wave motor production technology field. The piezoelectric oscillator is constituted by a bimorph cantilever beam A (1), a bimorph cantilever beam B (2), a piezoelectric stack- metal composite elastic beam (3), a mass block (4), an annular contact body (5), and a pedestal (6). The bimorph cantilever beam A (1), the bimorph cantilever beam B (2), the piezoelectric stack- metal composite elastic beam (3), and the mass block (4) can form a T-shaped structure in the space. When the AC voltages having the phase difference of 90degrees, the same frequency, and the same amplitude are applied to a piezoelectric stack (301) of the piezoelectric stack- metal composite elastic beam (3), the piezoelectric ceramics of the bimorph cantilever beam A (1), and the piezoelectric ceramics of the bimorph cantilever beam B (2), and therefore the annular contact body (5) can be used to generate the synthesis oscillation capable of performing the reciprocating axial torsion and the torsion around the central shaft, and the oscillation can be used to push the rotor to perform the rotation motion.
Description
Technical field
The utility model relates to one to be indulged-curved-reverse compound rotary ultrasonic ware motor piezoelectric vibrator, can realize accurate driving and positioning function, belong to the technical field that supersonic motor is manufactured.
Technical background
Supersonic motor utilizes the vibration that the inverse piezoelectric effect of piezoelectric ceramic is motor stator by electric energy conversion, then rotates (or straight line) motion by the friction couple drive rotor between motor stator and rotor.Supersonic motor have compact conformation, low-speed and large-torque, fast response time, control characteristic good, be not subject to electromagnetic interference, positioning precision is high, noise is little, can directly drive the advantages such as load, is widely used in the every field such as national defence, military affairs, industry, medical treatment and national product life.
There is more patent application to relate to piezoelectric ultrasonic motor and piezoelectric vibrator both at home and abroad, typical piezoelectric ultrasonic motor piezoelectric vibrator structure be mainly go in ring, the mechanism such as longitudinal-torsional compound, these piezoelectric vibrator complex structures, processing technology is loaded down with trivial details, as the piezoelectric vibrator Surface Machining of the traveling wave type ultrasonic that goes in ring tens dentalations, the piezoelectric vibrator of Hybrid Longitudinal-Torsional Ultrasonic Motor by project organization complexity is so that the frequency invariance of tuning longitudinal vibration mode and torsional oscillation mode.In addition, the longitudinal mode of this motor and torsion modes are difficult to independent control, cause the loaded down with trivial details complexity of design of motor drive controller.The piezoelectric vibrator of labyrinth makes above-mentioned supersonic motor be difficult to microminiaturization, is unfavorable for requiring in bulk the application in stricter field (as micro-Driving technique).
Utility model content
The utility model proposes one to indulge-curved-reverse compound rotary ultrasonic ware motor piezoelectric vibrator, this oscillator structure is simple, is convenient to processing and fabricating; And the longitudinal mode of oscillator and bent/twisted mode of oscillation can be distinguished independent control.
The embodiment that the utility model adopts is: this supersonic motor piezoelectric vibrator is made up of bimorph piezoelectric cantilever beam A (1), bimorph piezoelectric cantilever beam B (2), piezoelectric stack-metal composite spring beam (3), mass (4), belt contact (5) and pedestal (6).Bimorph piezoelectric cantilever beam A (1) is bonded in the forward and backward surface of metallic matrix (102) by epoxide-resin glue by forward polarized piezoelectric pottery (101) and negative sense polarized piezoelectric pottery (103), form sandwich structure; Bimorph piezoelectric cantilever beam B (2) is bonded in the forward and backward surface of metallic matrix (202) by epoxide-resin glue by negative sense polarized piezoelectric pottery (201) and forward polarized piezoelectric pottery (203), form sandwich structure; The left end of bimorph piezoelectric cantilever beam A (1) and pedestal (8) are fixing, and right-hand member is connected with mass (4).The right-hand member of bimorph piezoelectric cantilever beam B (2) and pedestal (6) are fixing, and left end is connected with mass (4).Piezoelectric stack-metal composite spring beam (3) is connected as a body by epoxide-resin glue and metal elastic gonosome (302) by piezoelectric stack (301), the upper end of piezoelectric stack-metal composite spring beam (3) is connected with mass (4), and lower end is fixed on pedestal (7).Bimorph piezoelectric cantilever beam A (1), bimorph piezoelectric cantilever beam B (2) and piezoelectric stack-metal composite spring beam (3) spatially form T-shaped structure with mass (4).When apply the sinusoidal voltage V of ultrasonic frequency domain to the piezoelectric stack (301) that stacks formula piezoelectric stack-metal composite spring beam (3)
1time, piezoelectric stack (301) produces the stretching vibration up and down along its axis, this vibration, by after the amplification of metal elastic gonosome (302), promotes mass (4) and belt contact (5) and makes together upper and lower double vibrations.In the time that belt contact (5) is done vibration upwards, force belt contact (5) to compress and contact with rotor.When the piezoelectric ceramic of giving bimorph piezoelectric cantilever beam A (1) and bimorph piezoelectric cantilever beam B (2) applies one and V
1same frequency, with the cosine alternating voltage V of amplitude
2time, bimorph piezoelectric cantilever beam A (1) and bimorph piezoelectric cantilever beam B (2) do constant amplitude, reverse flexural vibrations simultaneously.The back-flexing effect of vibration of bimorph piezoelectric cantilever beam A (1) and bimorph piezoelectric cantilever beam B (2) is on mass (4), form a torsional moment, this torsional moment drives mass (4) and belt contact (5) to produce the twist motion around its central shaft.The contact (5) that goes in ring is done up and down reciprocatingly compressional vibration and the twist motion around its central shaft simultaneously, after both are synthetic, produces elliptical trajectory at the surperficial particle of the contact (5) that goes in ring, and this track drive rotor rotates.
The embodiment that the utility model adopts is: motor piezoelectric vibrator operation mode is selected the first-order bending vibration mode of single order longitudinal mode, bimorph piezoelectric cantilever beam A (1) and the bimorph piezoelectric cantilever beam B (2) of piezoelectric stack-metal composite spring beam (3).
The embodiment that the utility model adopts is: the operating frequency of motor piezoelectric vibrator is 18880Hz.
Accompanying drawing explanation
Fig. 1 is general structure generalized section of the present utility model;
Fig. 2 is general structure vertical view of the present utility model;
Fig. 3 is 3D solid view of the present utility model;
Fig. 4 is piezoelectric vibrator single order compressional vibration deformation map of the present utility model;
Fig. 5 is piezoelectric vibrator single order bent/twisted vibration deformation map of the present utility model;
Fig. 6 is the elliptical trajectory figure of the belt surperficial particle of contact (5) of piezoelectric vibrator.
Embodiment
As shown in Figure 1,2 and 3, a kind of indulging-curved-reverse compound rotary ultrasonic ware motor piezoelectric vibrator to be formed by bimorph piezoelectric cantilever beam (1), bimorph piezoelectric cantilever beam (2), piezoelectric stack-metal composite spring beam (3), mass (4), belt contact (5) and pedestal (6).Bimorph piezoelectric cantilever beam A (1) is bonded in the forward and backward surface of metallic matrix (102) by epoxide-resin glue by forward polarized piezoelectric pottery (101) and negative sense polarized piezoelectric pottery (103), form sandwich structure; Bimorph piezoelectric cantilever beam B (2) is bonded in the forward and backward surface of metallic matrix (202) by epoxide-resin glue by negative sense polarized piezoelectric pottery (201) and forward polarized piezoelectric pottery (203), form sandwich structure; The left end of bimorph piezoelectric cantilever beam A (1) and pedestal (8) are fixing, and right-hand member is connected with mass (4).The right-hand member of bimorph piezoelectric cantilever beam B (2) and pedestal (6) are fixing, and left end is connected with mass (4).Piezoelectric stack-metal composite spring beam (3) is connected as a body by epoxide-resin glue and metal elastic gonosome (302) by piezoelectric stack (301), the upper end of piezoelectric stack-metal composite spring beam (3) is connected with mass (4), and lower end is fixed on pedestal (7).Bimorph piezoelectric cantilever beam A (1), bimorph piezoelectric cantilever beam B (2) and piezoelectric stack-metal composite spring beam (3) spatially form T-shaped structure with mass (4).
In the utility model execution mode, when applying the sinusoidal voltage V of ultrasonic frequency domain to the piezoelectric stack (301) of piezoelectric stack-metal composite spring beam (3)
1time, piezoelectric stack (301) produces the stretching vibration up and down along its axis, this vibration, by after the amplification of metal elastic gonosome (302), promotes mass (4) and belt contact (5) and makes together upper and lower double vibrations, as shown in Figure 4.In the time that belt contact (5) is done vibration upwards, force belt contact (5) to compress and contact with rotor.When the piezoelectric ceramic of giving bimorph piezoelectric cantilever beam A (1), bimorph piezoelectric cantilever beam B (2) applies one and V
1same frequency, with the cosine alternating voltage V of amplitude
2time, bimorph piezoelectric cantilever beam A (1) and bimorph piezoelectric cantilever beam B (2) do constant amplitude, reverse flexural vibrations simultaneously, as shown in Figure 5.The back-flexing effect of vibration of bimorph piezoelectric cantilever beam A (1) and bimorph piezoelectric cantilever beam B (2) is on mass (4), form a torsional moment, this torsional moment drives mass (4) and belt contact (5) to produce the twist motion around its central shaft.When the piezoelectric stack (301) of the piezoelectric ceramic of while bimorph piezoelectric cantilever beam A (1) and bimorph piezoelectric cantilever beam B (2), piezoelectric stack-metal composite elastomer (3) is when to apply respectively the consistent but phase difference of two amplitudes, frequency be the sinusoidal ac signal of 90 °, the contact (5) that goes in ring is done up and down reciprocatingly compressional vibration and the twist motion around its central shaft simultaneously, after both are synthetic, surperficial particle at the contact (5) that goes in ring produces elliptical trajectory, and this track drive rotor rotates.
In the utility model execution mode, in order to regulate as the single order longitudinal vibration model frequency of Fig. 4 and as the consistency of the single order bent/twisted vibration modal frequency of Fig. 5, adopt following measure:
1, reduce the length of piezoelectric stack-metal composite spring beam (3), reduce the length of piezoelectric stack-metal composite spring beam (3), can increase the longitudinal rigidity of piezoelectric vibrator, and then improve the frequency of the extensional vibration mode of piezoelectric vibrator;
2, increase the length of bimorph piezoelectric cantilever beam A (1) and bimorph piezoelectric cantilever beam B (2).Increase the length of bimorph piezoelectric cantilever beam A (1) and bimorph piezoelectric cantilever beam B (2), can reduce the bending stiffness of bimorph piezoelectric cantilever beam A (1) and bimorph piezoelectric cantilever beam B (2), and then reduce the beam frequency of cantilever beam.
Through above-mentioned adjusted design, design a kind of vertical-curved-operating frequency of reversing compound rotary ultrasonic ware motor piezoelectric vibrator is 18880Hz.Fig. 6 is the elliptical trajectory of the belt surperficial particle of contact (5) of piezoelectric vibrator.
Claims (2)
1. indulge-curved-reverse a compound rotary ultrasonic ware motor piezoelectric vibrator, it is characterized in that: this supersonic motor piezoelectric vibrator is made up of bimorph piezoelectric cantilever beam A (1), bimorph piezoelectric cantilever beam B (2), piezoelectric stack-metal composite spring beam (3), mass (4), belt contact (5) and pedestal (6); Bimorph piezoelectric cantilever beam A (1) is bonded in the forward and backward surface of metallic matrix (102) by epoxide-resin glue by forward polarized piezoelectric pottery (101) and negative sense polarized piezoelectric pottery (103), form sandwich structure; Bimorph piezoelectric cantilever beam B (2) is bonded in the forward and backward surface of metallic matrix (202) by epoxide-resin glue by negative sense polarized piezoelectric pottery (201) and forward polarized piezoelectric pottery (203), form sandwich structure; Piezoelectric stack-metal composite spring beam (3) is connected as a body by epoxide-resin glue and metal elastic gonosome (302) by piezoelectric stack (301); Bimorph piezoelectric cantilever beam A (1), bimorph piezoelectric cantilever beam B (2) and piezoelectric stack-metal composite spring beam (3) spatially form T-shaped structure with mass (4); When the sinusoidal voltage of applying ultrasonic frequency domain to the piezoelectric stack (301) of piezoelectric stack-metal composite spring beam (3), apply and V to the piezoelectric ceramic of bimorph piezoelectric cantilever beam A (1), bimorph piezoelectric cantilever beam B (2)
1same frequency, with the cosine alternating voltage V of amplitude
2time, the contact (5) that goes in ring is done up and down reciprocatingly compressional vibration and the twist motion around its central shaft simultaneously, after both are synthetic, produces elliptical trajectory at the surperficial particle of the contact (5) that goes in ring, and this track drive rotor rotates.
One according to claim 1 vertical-curved-reverse compound rotary ultrasonic ware motor piezoelectric vibrator, it is characterized in that: the operating frequency of motor piezoelectric vibrator is 18880Hz.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320607778.XU CN203596763U (en) | 2013-09-27 | 2013-09-27 | Longitudinal-bending-torsional composite rotary supersonic wave motor piezoelectric oscillator |
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| CN201320607778.XU CN203596763U (en) | 2013-09-27 | 2013-09-27 | Longitudinal-bending-torsional composite rotary supersonic wave motor piezoelectric oscillator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103516251A (en) * | 2013-09-27 | 2014-01-15 | 浙江工商大学 | Vertical-bending-twisting compound rotary type ultrasonic motor piezoelectric vibrator |
| CN109951102A (en) * | 2019-04-09 | 2019-06-28 | 哈尔滨工业大学 | A kind of two-freedom ultraprecise piezoelectric drive platform and its motivational techniques |
-
2013
- 2013-09-27 CN CN201320607778.XU patent/CN203596763U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103516251A (en) * | 2013-09-27 | 2014-01-15 | 浙江工商大学 | Vertical-bending-twisting compound rotary type ultrasonic motor piezoelectric vibrator |
| CN109951102A (en) * | 2019-04-09 | 2019-06-28 | 哈尔滨工业大学 | A kind of two-freedom ultraprecise piezoelectric drive platform and its motivational techniques |
| CN109951102B (en) * | 2019-04-09 | 2020-05-12 | 哈尔滨工业大学 | Two-degree-of-freedom ultra-precise piezoelectric driving platform and excitation method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140514 Termination date: 20150927 |
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| EXPY | Termination of patent right or utility model |