Magnetorheological vibration suppression device and method for thin-wall workpiece

According to the magnetorheological vibration suppression device and method for the thin-wall workpiece, the thin-wall workpiece is pressed through a pressing block and fixed through a bolt, meanwhile, a thin wall is clamped through a flange nut, and the moving freedom degree of the thin-wall workpiece in the vertical direction is limited. Finite element simulation is carried out on a sheet before planing machining to analyze the maximum deformation position, before machining, a magnetorheological fluid sprayer sprays magnetorheological fluid on the surface of a thin-wall workpiece, the amount of the magnetorheological fluid is properly increased at the position where the deformation quantity is analyzed to be large, and in the cutting process, a displacement sensor is used for detecting the deformation quantity in the maximum deformation area on one side of the thin wall. The current in the magnetic field coil is adjusted by measuring the sheet deformation quantity in the thin-wall cutting machining process