Mechanics Analysis Of A New Type Of 6-DOF Parallel Mechanism

Based on traditional Stewart mechanism,A new type of 6-DOF parallel mechanism is proposed for the insufficient stiffness under dynamic high load condition.By controlling the locking and unlocking states of different branches,the mechanism achieve a high stability in high load condition motion?8-Bar-6-DOF(eight-bar and six-degree-of-freedom)parallel mechanism is a special application form of metamorphic mechanisms and a microcosm of large multicellular hybrid mechanisms.Therefore,the research on the 8-Bar-6-DOF parallel mechanism has important theoretical and practical significance.This paper mainly analyzes the structure of the 8-Bar-6-DOF parallel mechanism,and proposes a new parallel mechanism that meets the actual production requirements and has both high degree of freedom and high stability.This paper firstly builds a new 8-Bar-6-DOF parallel mechanism based on the traditional Stewart mechanism and practical application requirements.According to this mechanism model,combined with the knowledge of higher space mechanism,the overall DOF of the mechanism is analyzed.The 3D solid model of the mechanism is established by Solidworks software,and the position equation of the mechanism is established by using the knowledge of higher spatial mechanism.The motion platform model is simulated by using MATLAB software.Then,the Mechanical properties is analyzed by using the finite element analysis module of solidworks software and the rationality of the structure is verified.The contrastive Relation between Transitional Rigid Strain Energy in Attitude Change and Super-static Strain Energy in the Same Attitude proves the stability of the mechanism.A theoretical model of eight-bar six-degree-of-freedom parallel mechanism is presented,and the rationality,reliability and integrity of mechanism design are illustrated by mechanical analysis of the mechanism.