The Structural Design And Optimization Simulation Of Heavy 6-Dof Electric Swaying Platform's Key Parts

The six degrees of freedom swaying platform which based on the parallel mechanism, with many advantages of good rigidity, large bearing capacity, high precision, fast system dynamic response, without accumulative error, etc. It is composed of mechanical construction, electric control, sensor, space motion mathematical models, real-time signal transmission and processing, graphical display, measurement and computer. So it is widely used to in these fields, such as, robot, flight simulator, new type machine, large radio telescope, astronatics docking. It is the hotspot in the field of mechanism study in recent years.This paper design the collectivity of electric six degrees of freedom swaying platform, based on demand of function and technique. Design and study the mechanical construction of electric swaying platform in detail. Especially, design the key parts, such as up-platform, hooke joint, spherical joint, and simulate kinematics and dynamics, then optimize the design, finally, get the construction satisfying the demand.With triaxiality modeling technique establish the triaxiality physical model of electric six degrees of freedom swaying platform in Pro/E. Check the model's mass, clearance, intervene to validate the design of overall project is accurate and reasonable. And provide a valid virtual prototype model for kinematics and dynamics simulation. Simulate the kinematics and dynamics using ADAMS, check kinematics intervene, and get the movement of the swaying platform and the driving force. Meanwhile analyse the key parts which bear great burden with finite element method using ANSYS, pivotal parts contains up-platform, hooke joint, spherical joint, analyse contains statics analysis, dynamics analysis, model analysis, optimize the construction of the pivotal parts based on results of the analysis, and insure the rigidity and strength of the swaying platform structure satisfy the demand. Finally do the kinematics simulationof the swaying platform using ADAMS to check that the design is reasonable.