Method for automatic process-optimal control of deep drawing on presses and corresponding deep drawing press

摘要

Before prodn. of deep-drawn components (2) of a given type, the inward displacement of the blank edge (8) with time (or the press stroke) is determined at least at one circumferential point during deep drawing of a faultless component. The data is stored and subsequently compared with the inward motion of the corresponding point on the current blank during the prodn. run. Dependent on the comparison result, the blank clamping force is either decreased or increased, or left unaltered. The blank clamping unit (5) or the bearing area (6) is provided with a displacement sensor whose signal is fed to a system (13) controlling the clamping force.