A NC machine platform for double-drive five-bar slider parallel mechanism A lead rod step motor and a gear step motor are fixedly installed at two end of that substrate respectively, A screw rod witha screw nut connected to a stepping motor. the other end of the screw rod is sleeved in a screw rod bearing fixed on the base plate, A lead screw nut is connecte with a slider base plate through a lead screw seat, two linear guide rails are respectively installed on the base plates on both sides of the screw rod through two sets of guide rail supports, A linear guide rail is connecte with a sliderbase plate through a linear bear, a hinge shaft is installed in that middle of the slider base plate, the other end of the hinge shaft is connecte with a swing bar, and also comprises a connecting rod, wherein the two ends of the connecting rod are hinged with a swing bar and a rocker bar respectively, and the other end of the rocker bar is connected with a transmission shaft, the transmission shaft passes through the base plate and is connected with a gear stepping motor through a helical gear drive; A workbench on which machining equipment is mounted and fixed; The invention has the advantages of compact structure, low shock and vibration, and high precision, and can meet the working requirements of different scenes.