The utility model discloses a bending machine with great curved system scope, including setting gradually two sets of wheels, induction coil and the front jig in the frame, still include wheel fixturetool, wheel fixture tool include the cylinder sleeve pipe, cylinder sheathed tube one end is provided with first fin and the second fin that is used for the location with cylinder sleeve pipe body axial vertical, cylinder cover inside pipe wall relatively fixed is provided with two sets of bearings, and carries out sharp setting along cylinder sheathed tube axial. The utility model discloses an it has the cover pipe box of fixing a position the fin and establishes on treating bending pipeline to set for one to through fin position casing to wheel department, then set for the bearing that multiunit length is unanimous through symmetry on set inside pipe wall, and two times of diameter sums with treating bending pipeline of the height of bearing are the same with the interval between the bending machine wheel, thereby have remedied the change of pipe diameter through the sleeve that the bearing was treated in the settlement, in addition through bearing messenger's sleeve and treat between the bending pipeline bending machine.