An inchworm piezoelectric actuator
A technology of piezoelectric actuators and piezoelectric ceramics, applied in the direction of generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc., can solve the problem of power-off clamping, volume Large size, high power consumption, etc., to achieve miniaturization, avoid excessive power consumption, and reduce quality
Active Publication Date: 2020-04-14
XIDIAN UNIV
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Problems solved by technology
However, due to the use of symmetrical lever-type amplification mechanism and cross roller guideway, the volume is relatively large, and the power consumption is relatively high because the power-off clamp cannot be realized.
Method used
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[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0030] refer to figure 1 , the present invention includes a housing 1 , a body 2 and an output shaft 3 .
[0031] refer to figure 2 , The housing 1 includes a lower baffle 11 , 2 upper baffles 12 and 4 side baffles 13 . The lower baffle 11 is a cuboid whose length is along the X-axis, width is along the Z-axis, and height is along the Y-axis. A dovetail-shaped rail groove is arranged along the length, and its opening is located on the upper surface of the lower baffle 11 perpendicular to the Y-axis. The direction is along the negative direction of the Y-axis; the center plane of the guide rail groove coincides with the center planes of the two sides of the lower baffle plate 11 perpendicular to the Z-axis direction. The jitter generated during the time, the length of the lower baffle 11 in the present embodiment is 130mm, the widt...
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The invention provides an inchworm type piezoelectric actuator comprising a casing, a body and an output shaft. The casing is a rectangular parallelepiped structure with a cavity and comprises a lowerbaffle plate, upper baffle plates and side baffle plates. The body comprises two clamping mechanisms and a connector formed by a driving mechanism between the two clamping mechanisms, the clamping mechanisms comprise lever type amplifying mechanisms formed by T-shaped connecting plates and two lever arms connected to two ends of trunk sides of the T-shaped connecting plates through flexible hinges, the driving mechanism comprises a bridge type amplifying mechanism formed by two bosses and two flexible kinematic chains which are connected to the two bosses through flexible hinges and are symmetrically distributed, and free ends of branch sides of the T-shaped connecting plates of the two lever type amplifying mechanisms are connected to the two bosses of the bridge type amplifying mechanism. The output shaft is connected to a clamping mechanism at one side where the driving mechanism is not equipped with a pre-tightening screw. The inchworm type piezoelectric actuator has the advantages of small size and light weight, and the power-off clamping can be achieved.
Description
technical field [0001] The invention belongs to the field of piezoelectric technology, and relates to an inchworm-type piezoelectric actuator, which can be used in aerospace, precision optical instruments, bioengineering and other fields. Background technique [0002] With the development of science and technology, precision actuators play an increasingly important role in the maintenance of high-precision antenna profiles in aerospace, the position adjustment of precision optical instruments, and nanoscale operations in bioengineering, especially in the aerospace field. , the load of the vehicle is limited, and the actuator is required to have the characteristics of small volume and light weight. Traditional actuators have disadvantages such as slow response and low precision, which affect their application in the field of actuation. Therefore, the piezoelectric actuator has become a current research hotspot due to its fast response, high precision, and no interference fro...
Claims
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IPC IPC(8): H02N2/02H02N2/04
CPCH02N2/023H02N2/04
Inventor 董航佳王作为李团结
Owner XIDIAN UNIV