CN203457074U - Positive-pressure-variable type non-symmetrical clamping inertial piezoelectric rotation driver - Google Patents
Positive-pressure-variable type non-symmetrical clamping inertial piezoelectric rotation driver Download PDFInfo
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- CN203457074U CN203457074U CN201320378772.XU CN201320378772U CN203457074U CN 203457074 U CN203457074 U CN 203457074U CN 201320378772 U CN201320378772 U CN 201320378772U CN 203457074 U CN203457074 U CN 203457074U
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Abstract
The utility model provides a positive-pressure-variable type non-symmetrical clamping inertial piezoelectric rotation driver, wherein a metal substrate is respectively connected with two piezoelectric wafers to form a piezoelectric bimorph. One end of the metal substrate is fixedly connected with an impact mass block by a screw, and the other end of the metal substrate and a connecting piece are fixed together by means of a clamping piece under the effect of a cruciform slot pan-head screw. The clamping difference is changed by adjusting the clamping position of the connecting piece. Due to the adoption of waveform-symmetrical signals as excitation signals, a piezoelectric element quickly deforms to generate different periodic and bidirectional inertia impact forces. When an oscillator for the piezoelectric bimorph fixed on a rotator swings bi-directionally, different positive pressures are generated between the rotation driver and a contact surface. Meanwhile, different frictional forces are generated when the rotation direction are varied. The rollback phenomenon of the inertial piezoelectric rotation driver is effectively weakened through reasonably designing the positional angle of the rotator. Therefore, the directional rotary movement of the driver is realized. The positive-pressure-variable type non-symmetrical clamping inertial piezoelectric rotation driver has the advantages of simple structure, no electromagnetic interference, easy generation of excitation signals, easy control and high positioning accuracy, and the piezoelectric element is low in cost.
Description
Technical field
That the utility model belongs to is small, precision optical machinery drives field.
Background technology
In recent years, along with the fast development of micro-/ nano technology, increasing to the demand of the Driving technique of microminiature machinery in technical fields such as biomedical engineering, precision optical machinery, robot, computer, control automatically, accurate measurement, the micro-manufacture of accurate device, ultraprecise processing.As the core of micro-Driving technique, the micro-Driving technique of micro/nano level becomes the focus that people pay close attention under this demand.The accurate driving of tradition mainly adopts mechanical type, as precision lead screw pair and roll/slide guide rail, accurate spiral cotter mechanism etc., but due to the problem such as have gap, rub, creep, its precision is difficult to meet the demands, under this condition, develop many novel type of drive, such as electrostatic attraction, electromagnetic type, magnetostriction type, marmem formula and piezoelectric type etc.Piezoelectric ceramic is a kind of functional material that is widely used in accurate micro-driving field, have low in energy consumption, without advantages such as electromagnetic interference, fast response times, the driver that the piezoelectric of take is driving element becomes an important branch of precise driving device in recent years.And inertia-type piezoelectric actuator because of its in impulse stroke, resolution, operating frequency, movement velocity, frequency response, manufacturing cost, be subject to the aspects such as the stagnant ring draw of piezoelectric element degree to there is unique advantage to have developed into the pith that Precision Piezoelectric drives.
Existing piezoelectric inertia driver is the piezoelectric vibrator of the symmetrical clamping of this Asymmetric Electric signal driver of application sawtooth signal mostly, but this actuator drive signal is not easy to produce, mechanism is not easy to control, and has the shortcomings such as larger rollback motion.
In view of the existing problem of current piezoelectric inertia driver, the utility model proposes the asymmetric clamping inertial piezoelectric of a kind of changing pressure formula rotating driver, it is under the excitation of the balancing waveform signal of telecommunication, at different directions, produce different inertia actuating forces, make piezoelectric actuator produce the bidirectional-movement with displacement difference.And by the design with the not parallel rotary actuation element of contact-making surface, normal pressure while changing driving element bidirectional swinging between driver and contact-making surface, thereby obtain the discrepant frictional force of different motion direction, in conjunction with the design of asymmetric mechanism, realize the directional-rotation motion of driver.
Summary of the invention
Technical problem to be solved by this invention is: by the design of asymmetric fixture, the inertial impact force that adopts the balancing waveform signal of telecommunication to obtain different directions as pumping signal is poor, and by the setting with the not parallel piezoelectric bimorph oscillator of contact-making surface mechanism, between the different swaying direction drivers of piezoelectric bimorph oscillator and contact-making surface, produce different normal pressures, thereby change the frictional force of different rotary direction, in conjunction with the design of asymmetric fixture, realize the directional-rotation motion of driver.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
Described piezoelectric chip (2) adopts conducting resinl in parallel bonding with metal substrate (3).
One end of described metal substrate (3) and connector (16) link together by cramping body (4) and the effect of tack cross grooving screw (5), and the other end is by tack cross grooving screw (1) and nut (10) quality of connection piece (9).
On described cramping body (4), there is the screwed hole adapting with described tack cross grooving screw (5).
Described cramping body (4) adopts packaged type to be connected with connector (16).
Described connector (16) adopts nonintegrated structure design with rotary body (13).
The fixed position of described rotary body (13) in main body (8) can change.
Described main body (8) has semi-circular location hole, is convenient to the location of rotary body.
Described base (14), for supportive body, keeps the stable of driver.
The invention has the beneficial effects as follows: the described asymmetric clamping inertial piezoelectric of changing pressure formula rotating driver is by the design of asymmetric fixture, adopt the excitation of the balancing waveform signal of telecommunication, effectively weakened that symmetrical clamping activation configuration is complicated, sawtooth waveforms drives that signal is not easy to produce, manageable shortcoming is not allowed by mechanism.By the design with the not parallel piezoelectric bimorph driving element of contact-making surface structure, during piezoelectric bimorph bidirectional swinging, driver produces different contact normal pressures, thereby form the different frictional force of different rotary direction, in conjunction with the design of asymmetric fixture, can effectively weaken the phenomenon of inertial piezoelectric driver rollback.
Accompanying drawing explanation
Fig. 1 is that the axle that waits of the asymmetric clamping inertial piezoelectric of changing pressure formula rotating driver is surveyed view;
Fig. 2 is the front view of the asymmetric clamping inertial piezoelectric of changing pressure formula rotating driver;
Fig. 3 is main structure chart;
Fig. 4 is that the upper and lower isometric axis of base is surveyed view.
Embodiment
As depicted in figs. 1 and 2, in device, screw used is tack cross grooving screw, metal substrate one end is connected impact mass piece by tack cross grooving screw (1) with nut (10), the other end and connector (16) and cramping body (4) link together by the effect of tack cross grooving screw (5), cramping body (4) can move along the length direction of connector, thereby change to add and hold extent, and then change the piezoelectric bimorph size of inertial impact force in different directions, with this, form the displacement difference of piezoelectric bimorph different motion direction.
Connector (16) is fixed on rotary body by tack cross grooving screw (7) and nut (18), and rotary body adopts staggered form injustice to be fixed in main body by two pairs of tack cross grooving screws (12) and nut (11) combination in the mode of horizontal contact-making surface.
Main body (8) is vertically placed in the grooving of base (14), body width equates with notch width, main body lower surface contacts with grooving inner bottom surface is parallel, and fixing by tack cross grooving screw (15) and nut (19), and the direct and horizontal contact-making surface of base contacts.
Claims (6)
1. the asymmetric clamping inertial piezoelectric of a changing pressure formula rotating driver, it comprises metal substrate (3), cramping body (4), connector (16), main body (8), rotary body (13) and base (14), it is characterized in that: described inertia starter adopts asymmetric clamping, during piezoelectric bimorph oscillator bidirectional swinging in described inertial piezoelectric activation configuration, produce different contact surface positive pressures.
2. the asymmetric clamping inertial piezoelectric of changing pressure formula according to claim 1 rotating driver, the fixedly employing packaged type cramping body (4) that it is characterized in that metal substrate (3) and connector (16) is fixing, is used for forming different clampings poor.
3. the asymmetric clamping inertial piezoelectric of changing pressure formula according to claim 1 rotating driver, is characterized in that connector (16) is not parallel fixing at the upper employing of rotary body (13) and horizontal contact-making surface.
4. the asymmetric clamping inertial piezoelectric of changing pressure formula according to claim 1 rotating driver, is characterized in that the fixed position of rotary body (13) in main body (8) adopts variable dynamic formula.
5. the asymmetric clamping inertial piezoelectric of changing pressure formula according to claim 1 rotating driver, is characterized in that there is semi-circular position pilot hole in main body (8), can make rotary body around annular center point rotation location.
6. the asymmetric clamping inertial piezoelectric of changing pressure formula according to claim 1 rotating driver, is characterized in that by the design of base (14), keeps the stability of main body, suitably reduces the contact area between driver and contact-making surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320378772.XU CN203457074U (en) | 2013-06-19 | 2013-06-19 | Positive-pressure-variable type non-symmetrical clamping inertial piezoelectric rotation driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320378772.XU CN203457074U (en) | 2013-06-19 | 2013-06-19 | Positive-pressure-variable type non-symmetrical clamping inertial piezoelectric rotation driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203457074U true CN203457074U (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320378772.XU Expired - Fee Related CN203457074U (en) | 2013-06-19 | 2013-06-19 | Positive-pressure-variable type non-symmetrical clamping inertial piezoelectric rotation driver |
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| CN (1) | CN203457074U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105827147A (en) * | 2016-06-12 | 2016-08-03 | 吉林大学 | Inertia piezoelectric driving motor |
| CN110912441A (en) * | 2018-09-14 | 2020-03-24 | 长春隆美科技发展有限公司 | Variable positive pressure piezoelectric rotary driver |
-
2013
- 2013-06-19 CN CN201320378772.XU patent/CN203457074U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105827147A (en) * | 2016-06-12 | 2016-08-03 | 吉林大学 | Inertia piezoelectric driving motor |
| CN110912441A (en) * | 2018-09-14 | 2020-03-24 | 长春隆美科技发展有限公司 | Variable positive pressure piezoelectric rotary driver |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140226 Termination date: 20140619 |
|
| EXPY | Termination of patent right or utility model |