Springback compensation method based on technological parameter control

The invention discloses a springback compensation method based on technological parameter control. The springback compensation method comprises the following steps of: when a part is not cracked or draped, acquiring a plurality of combinations of technological parameters corresponding to the minimum springback amount and the maximum springback amount, wherein the technological parameters comprise drawbead resistance, blank holder force and a friction coefficient; according to the combinations of the technological parameters corresponding to the maximum springback amount, taking a profile with the maximum springback amount corresponding to the combination of the minimum drawbead resistance, the minimum blank holder force and the minimum friction coefficient as a reference, and calculating to obtain a mold compensation profile; and according to the combinations of the technological parameters corresponding to the minimum springback amount, taking the combination with the relatively large drawbead resistance, the relatively large friction coefficient and the relatively small blank holder force as a technological parameter combination of a compensated profile, wherein a fitter polishes a drawbead, so that the drawbead resistance is reduced, and the springback amount is gradually increased; therefore, the profile subjected to springback slowly gets close to a computer aided design (CAD) profile; and if the drawbead is over-polished, the springback amount is controlled by increasing the blank holder force, so that the part meeting a requirement can be stamped.