The six degrees of freedom(6-DOF)platform which is actuated by stepper motor and driven by ball screw is designed contrary to the hydraulic platform which is complex and difficult to control.The model of the platform is built and simulated by using Solidworks
then the motion curves of the platform and screw are got.The space motion location
movement process and movement limit position are analyzed.It is proved that the platform can move reasonably and normally.At last
it has been verified by the prototype of the platform.