Study on springback control of V-bending process of metal sheet

For effective control of springback in V-bending process of metal sheet,the property parameters of the metal are gradually modified by means of theoretical model in the bending process,so that the final bending depth parameters can be calculated accurately.The forming and springback angle parameters can be obtained in several incremental bending processes.The results show that the modified parameters are close to that of the tensile test,and the deviation of forming angle is less than 1°.The incremental bending methodology avoids the springback controlling error caused by material parameter error,and improves the springback control precision of V-bending.