The invention relates to a precision control method of a springback
radius and a springback angle for
numerical control forming of bent
pipe, which comprises the steps of compensating for the springback
radius first; and then compensating for the springback angle at the forming
radius after the forming radius meets the forming precision.
Numerical control compensation of the springback radius of the bent
pipe uses a corrected die method by reduction of the bending radius so that the forming radius after springback of the bent
pipe meets the precision requirement.
Numerical control compensation of the springback angle of the bent pipe uses an over-bending method by over-bending of the pipe across a certain angle so that the forming angle after springback of the bent pipe meets the precision requirement. The method provided by the invention meets the pipe bending precision required by
aviation standards by means of compensating for the bending radius first and then compensating for the bending angle, and has the advantages of being simple and reliable in process method, high in efficiency and low in process cost. The method can be applied to
numerical control bending forming of a high-strength
titanium pipe, and solves the control problems of the remarkable springback angle and the remarkable springback radius of the high-strength
titanium pipe, so as to obtain the
titanium pipe that meets the high precision requirement of physical dimensions.