The invention relates to a
sheet metal bending system and method based on clamping controlling and staged bending. The
sheet metal bending system comprises a driving motor, a clamping fixing seat and a host which are installed on a rack, the driving motor is provided with a bending shaft, and a work piece is arranged on the clamping fixing seat; the
sheet metal bending system further comprises an ultrasonic wave thickness
detector, an ultrasonic wave crack
detector, pressure sensors, a roller and a controller which is connected with the host; the ultrasonic wave thickness
detector, the ultrasonic wave crack detector and the pressure sensors are connected with the host through a DSP
data processing module. According to the sheet
metal bending system and method, through the combination of staged type bending and feedback controlling, the crack number is greatly decreased, and the
machining quality is improved; the roller is arranged to perform
extrusion friction on the inner concave face of the work piece, protrusive burrs and cracks are effectively removed, the subsequent
machining process is omitted, and the
machining cycle is shortened; the camping pressure is controlled by the pressure sensors, and therefore sheet
metal deformation or disengagement is avoided, and the machining reliability is improved.