Piezoelectric driving/locking reciprocating step driving platform and method

Abstract

The invention discloses a piezoelectric driving / locking reciprocating step driving platform and a piezoelectric driving / locking reciprocating step driving method, and belongs to the precision driving technology field. The driving platform is mainly composed of precision driving and locking units I and II, a reciprocating step unit and a supporting base, wherein the precision driving and locking units I and II are respectively composed of driving piezoelectric stacks, locking piezoelectric stacks and combined flexible hinges; the combined flexible hinges and a moving platform are locked by locking the piezoelectric stacks according to the inverse piezoelectric effect of each piezoelectric stack; the piezoelectric stacks and the combined flexible hinges are driven so that the cross-scale precision step motion of the moving platform can be realized; the reciprocating step unit is composed of the moving platform and two precision rolling guides, thereby ensuring the smooth motion and bearing capability of the platform. According to the platform and the method, cross-scale precision step motion and locking can be realized, three operating modes are present, and the platform is simple in structure, few in components, convenient to process and assemble, thus the platform and the method can be applied to the on-site mechanical property test of materials, precision optics, miniature robots and other fields.

Description

technical field [0001] The invention relates to the field of precision drive technology, in particular to a piezoelectric drive / locking reciprocating step drive platform and method. The invention can realize cross-scale bidirectional precise stepping motion and locking, has three working modes, and can be used for micro-positioning and micro-operation in the fields of high-precision driving, in-situ mechanical performance testing of materials, precision optics, and micro-robots. Background technique [0002] In recent years, nanopositioning technology has received extensive attention from researchers, has achieved considerable development, and has been widely used in important engineering fields such as precision optics, biomedical engineering, in-situ mechanical performance testing of materials, and aerospace. With the increasing demand for nano-manipulation technology, the cross-scale positioning technology with nano-level motion accuracy and millimeter-level motion stroke...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a piezoelectric drive / locking reciprocating stepping drive platform and method, which has three working modes under the timing control of the piezoelectric stack, can realize bidirectional precise stepping motion, and carry out cross-scale Positioning and locking, solving the problems existing in the prior art such as complex mechanism, large size, poor overall rigidity, difficult processing, and high cost

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