Analysis of Guiding Displacement of Parallel Four-bar Mechanism with Right Angle Flexible Hinge
YE Guo
LI Wei
WANG Yu-qiao
YANG Xue-feng
Abstract：In order to realize the accurate positioning of parallel four-bar mechanism with right angle flexible hinge,a branched chain model was proposed for analyzing the guiding displacement characteristics based on the symmetry of structure.A formula for calculating guiding displacement was derived using a singularity function.The finite element simulation for the sample piece processed by wire cutting was carried on using an ANASYS10.0.Errors between theoretical results,simulation results and experimental results were analyzed.The results show that the guiding displacement is roughly linear with the force within the limit of elastic deformation.The results obtained from theoretical model are similar to the reslts from simulation with an error of 1.64%.The error between the results from theoretical model and experiments is about 5.76%.Experimental results may deviate from theoretical results and simulation resuits due to various factors,including machining error of the mechanism,structural defects of the material and work hardening behavior after machining.
Keywords：parallel four-bar mechanismsingularity functionguiding displacementright angle flexible hingefinite element analysis
Publication Date：2010-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 254-258 )