Surface Reconstruction of Different Depth Box and its Variable Blank-Holder Forces Formability Process Numerical Simulation

With an example of automobile stock,the surface construction in reverse engineering has been introduced.By the Finite-Element Method, the formability of the different depth deep drawing process has been investigated based on the numerical simulation;Aiming at one of the formability conditions,the saw tooth variable blank-holding force has been researched.The numerical simulation result indicated that the saw tooth variable blank-holder force can improve the formability of different depth box deep drawing and efficiently avoid the failure of wrinkling and fracture in drawing process.