Analysis of the punch motion curve for the springback of U-shaped sheet metal

Servo presses achieve high formability by using different punch motion curves, thereby increasing their applicability in conventional processing fields. In this study, the curves of servo were optimized, and effects on springback U-shaped sheet metal explored. Subsequently, optimal curve was determined, effect after investigated. Different proposed simulated for comparison with results methods, equivalent stress values obtained mold angles analyzed. DEFORM software used to conduct simulations determine differences between methods. addition, spring-go, springback, load–stroke characteristics, strain distributions The resulted stress, strain, required force higher than those achieved study. smaller movement difference press was, lower were. These indicate that types can serve as a reference selecting appropriate parameter presses.