High-speed Thin Rod Support Parallel Mechanism Stability Analysis And The Optimization Of Structural Parameters

For the parallel mechanism has good stability, no cumulative error, flexibleposition adjustment, movement high accuracy and other characteristics.So that, in themodern production process, such as high-speed food packaging, sorting, materialsorting, and other occasions, its production efficiency significantly.However,As thespeed and movement of the parallel mechanism improve the accuracy of the stabilityproblem of the motion is increasingly important.The main subject of support forhigh-speed slender rod parallel institutional stability and structural parameters ofoptimization and other issues carry out research.The main content and innovation are as follows:(1) First through analysis of the research status of the parallelmechanism,Established the main contents of this topic is:Construction of the slender rodto support the stability of the calculation model of the parallel mechanism parallelkinematic model;By Analysis the dexterity and stiffness of the slender supports parallelmechanism, the structure of the parallel mechanism for parameteroptimization;Simulation by using finite element analysis software slender supportsparallel mechanism to verify the feasibility and reliability of the theory.(2) Con the Slender rod supporting the stability of the parallel mechanism, throughthe study of the truss structure stability theory,Combined with this topic slender tosupport a parallel mechanism,Analysis support the instability of the type of bucklingcriteria, and buckling analysis in Ansys,Stability calculation model was constructed tobuild the slender support parallel mechanism.(3) Through the analysis of works of high-speed slender rod supporting parallelinstitutions, designed to their specific parameters, thereby establishing a parallelkinematic model.(4) Dexterity, stiffness and other parameters of the analysis of high-speed slenderrod, build a parameter expression,Its linear optimization analysis, the optimalparameters of high-speed parallel mechanism slender rod. (5) Through the establishment of the mechanical model of the high-speed parallelmechanism, changes in the position of the moving platform, each rod by the force ofchange.Then, In the rod’s length, thickness under different circumstances,Slender rod ofhigh-speed parallel mechanism and the overall parallel mechanism, the stability analysisusing the ANSYS Workbench software,Compared and analyzed the variation of theinstability force, which can be designed to the stability of the best high-speed slenderrod supporting parallel institutions.The main subject of innovation:(1) The development of applications for today’s high-speed, high-precision parallelmechanism, the paper proposes that the stability analysis of high-speed slender rodsupporting parallel institutions,Through research and analysis support the instability ofthe type of buckling criteria, and buckling analysis in ANSYS, build high-speed slendersupporting the instability calculation model.(2) The use of the ANSYS Workbench software stability analysis of slender rod ofhigh-speed parallel mechanism and the overall parallel mechanism, and obtained thevariation of the force of its instability, can be designed to better stability of thehigh-speed slender rod supporting parallel institutions.This topic is optimized to support the stability and structural parameters of theparallel mechanism for high-speed slender rod, not only to build a theoreticalmodel,And its simulation experiment, the practical application of the method laid thetheoretical and simulation basis.