A stretch bending machine is a metal forming equipment with dual functions of "stretching" and "bending". Its core function is to bend profiles (steel pipes, aluminum profiles, angle steel, etc.) into complex radians, and it is widely used in high-precision fields such as aerospace, automobile manufacturing, and curtain wall decoration. The biggest difference from ordinary bending machines is: during processing, it first applies pre-tension to the profile and then bends it, which effectively avoids wrinkling and collapse of the profile. After forming, the radian is smooth and the precision is higher. It is especially suitable for processing thin-walled, large-radius and complex curved profiles, solving the forming problems that ordinary bending machines are difficult to overcome.