Piezoelectric micro-platform capable of amplifying based on flexible hinge

A technology of flexible hinges and micro-motion platforms, which is applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, piezoelectric/electrostrictive/magnetostrictive devices, etc., and can solve micro-motion The platform travel is not large enough to achieve the effect of easy guarantee of machining accuracy, light weight and high guiding accuracy

Active Publication Date: 2015-09-23
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcoming that the travel of the micro-motion platform in the prior art is not large enough, the present invention provides a piezoelectric micro-motion platform based on flexible hinge amplification that can amplify the driving displacement of the micro-driver

Method used

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  • Piezoelectric micro-platform capable of amplifying based on flexible hinge
  • Piezoelectric micro-platform capable of amplifying based on flexible hinge
  • Piezoelectric micro-platform capable of amplifying based on flexible hinge

Examples

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Embodiment Construction

[0033] Such as figure 1 As shown, the piezoelectric micro-motion platform amplified based on flexible hinges includes a frame 1 and a loading platform 16; a micro-drive 5 and an amplifying mechanism for amplifying the driving displacement of the micro-drive 5 are installed on the frame 1 .

[0034] Such as figure 2 As shown, the amplification mechanism is a double rocker mechanism installed on the frame 1; the active rocker 12 of the double rocker mechanism is provided with an extension section away from the end of the connecting rod 17, and the free end of the active rocker extension section 11 is against the micro drive. 5. The active rocker 12 and its extension 11 take the hinge point of the active rocker 12 and the frame 1 as the fulcrum to form an enlarged lever; the length of the extension of the active rocker 12 is less than the length of the active rocker 12 without the extension, so , the active rocker 12 utilizes the lever amplification effect to amplify the displa...

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PUM

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Abstract

The invention discloses a piezoelectric micro-platform capable of amplifying based on a flexible hinge. The piezoelectric micro-platform comprises a frame and a carrier platform, wherein a micro-driver and an amplifying mechanism are arranged on the frame; the amplifying mechanism is a double-rocker mechanism; an extension section is arranged on one end, which is far away from a connecting rod, of a driving rocker of the double-rocker mechanism, and a free end of the extension section of the driving rocker supports the micro-driver; the driving rocker and the extension section thereof form an amplifying lever with a hinge point of the driving rocker and the frame as a pivot; an extension section is arranged on one end of the connecting rod, which is far away from the driving rocker; the carrier platform is connected to a decoupling mechanism, the decoupling mechanism is formed by at least one pair of decoupling units, and the two decoupling units are symmetrical around the center of the carrier platform; each decoupling unit is formed by a connecting arm and a pair of flexible arms, one end of each flexible arm is hinged to the frame, the other end of each flexible arm is hinged to the connecting arm, and the other end of the connecting arm is hinged to the carrier platform; the extension section of the connecting rod is hinged to any one decoupling unit. The piezoelectric micro-platform has the advantage that the driving displacement of the micro-driver can be amplified.

Description

technical field [0001] The invention relates to a micro-motion platform driven by a piezoelectric stack. technical background [0002] As a key component of microelectromechanical systems, micro-motion platforms are widely used to load precision instruments or their key components such as common optical lenses, precision micro-manipulation end rods and micro-grippers. Therefore, the micro-motion platform needs to have multi-dimensional motion and extremely high resolution. [0003] Compared with electrostatic comb drive, electrothermal drive and shape memory alloy drive, piezoelectric stack drive has the advantages of high resolution, large driving force, wide frequency response range, fast response speed and good dynamic characteristics, so it is especially suitable for to drive the micro-motion platform. In the field of micro-assembly technology, it is often necessary to use a micro-motion platform to drive the micro-gripper to move from the micron level to the millimete...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B81B7/02H01L41/04
Inventor 娄军强廖江江杨依领邱辉孙涛
Owner NINGBO UNIV
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