Novel strategies to reduce the springback for double-sided incremental forming

Springback is one of the key defects which influences the geometric accuracy of the incremental sheet forming parts, and it can only be controlled or compensated by optimized toolpath or tool positioning especially in double side incremental forming (DSIF). In the present work, novel strategies including ‘squeezing’ and ‘reverse bending’ are investigated targeting to reduce the springback in DSIF. Experiments and numerical simulations have been conducted to validate the effect of the new strategies. The springback has been significantly reduced with optimum process parameters.