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Parallel mechanism with a high-speed , high acceleration , high accuracy , stiffness , bearing capacity , good dynamic performance , low power consumption advantages , so more and more widespread concern caused many domestic and foreign researchers and related units . High-speed , light signs and trends in today's world of mechanical products , the light of the parallel mechanism in the high - speed , heavy-duty operating conditions , each rod will produce elastic deformation , resulting in the decline of the movement and dynamic performance of the parallel mechanism . Therefore, considering its stiffness in the analysis and design of the parallel mechanism , the evaluation of the elastic deformation is very important . Parallel mechanism with six degrees of freedom , less DOF ??parallel mechanism branched not only to pass the driving force , but also to provide to the end of the binding , static analysis of such institutions , however , the existing studies have ignored the constraints force of the transmission characteristic . In this paper, based on analysis of parallel institutions at home and abroad elasticity research and applications , according to the agencies are part of the geometrical relationship using vector method for solving the inverse position of the 3-SPR 4SPS SP parallel mechanism , speed the Jacobi , work space . Institutions in accordance with the principle of virtual work , static analysis , constraint reaction force for solving the load by space agencies , the driving force has been static Jacobian matrix and institutions stiffness and elastic deformation analysis . The three-dimensional solid software entity model , a finite element environment statics finite element analysis . Will parse the results of the elastic deformation of the solid model the numerical elastic deformation results were analyzed to verify the correctness of the results of the finite element analysis , proved by constraints and loads applied to the entity simulation analysis of elastic deformation . In addition, the kinetic analysis 4SPS SP parallel mechanism .
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