Flexible hinge-based displacement reversing and enlarging mechanism

Abstract

The present invention relates to a flexible hinge-based displacement reversing and enlarging mechanism. The mechanism comprises a left rigid body, a right rigid body and a flexible portion; the left rigid body and the right rigid body are symmetrically disposed relative to a y-axis; the flexible portion is connected between the left rigid body and the right rigid body; the flexible portion is symmetrically arranged relative to the y-axis; the flexible portion comprises a left triangle enlarging area, a right triangle enlarging area, a top triangle enlarging area, a left lever enlarging area and a right lever enlarging area; the two bottom ends of the top triangular enlarging area are respectively connected with the two top ends of the left triangle enlarging area and the right triangle enlarging area; the two bottom ends of the left triangular enlarging area are respectively connected with the upper end of the left rigid body and the output end of the left lever enlarging area; and thetwo bottom ends of the right triangular enlarging area are respectively connected with the upper end of the right rigid body and the output end of the right lever enlarging area. According to the flexible hinge-based displacement reversing and enlarging mechanism of the invention, the structural performance advantages of the flexible hinge-based triangle enlarging principle and the lever enlarging principle are integrated; and the reversing and enlargement function of input displacement is realized. The mechanism has the advantages of compact structure, stable motion, high precision and the like.

Description

technical field [0001] The invention relates to the technical field of micro-nano precision micro-positioning drive, in particular to a displacement reversing amplification mechanism based on a flexible hinge. Background technique [0002] With the development of micro-nano precision micro-positioning drive technology, micro-displacement technology has become particularly important in precision positioning systems and precision manufacturing processes. In recent years, the piezoelectric ceramic driver has been widely used in precision machinery as the driving element of the micro-positioning platform. However, due to its small driving displacement, the output displacement is only about 10um under 100V voltage, which limits its application range. However, the traditional micro-displacement amplification mechanism has the following defects: 1. The magnification factor is relatively small, and the precision of the amplification mechanism is relatively low in addition to the err...

AI Technical Summary

Problems solved by technology

In recent years, the piezoelectric ceramic driver has been widely used in precision machinery as the driving element of the micro-positioning platform. However, due to its small driving displacement, the output displacement is only about 10um under 100V voltage, which limits its application range. However, the traditional micro-displacement amplification mechanism has the following defects: 1. The magnification factor is relatively small, and the precision of the amplification mechanism is relatively low in addition to the error of the driver; 2. For some occasions, due to limited space or work requirements, both In case of enlargement and reversing, the traditional micro-displacement transmission mechanism cannot achieve both

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