... function 3.high precision 4:Touch screen 1.NC/CNC contral 2.pre-bending function 3.high precision 4 ... roller , down rollers and level motion device support rolls device , tuning device , balance device, lubricate device , left and right work frame and ... form.3) Support device Composed of sloping block device, support device, support rolls bearing pedestal, support lifting device, support rolls can ...