Method for quick-action regulation of drawing process in presses has piezo-electric actuator for precision regulation, between pressure bolt and pressure piston for rough regulation

摘要

A component is drawn y relative movements between upper and lower tools, and a drawing unit with pressure point. The contact force of the pressure point (13) is regulated by a piezo-electric actuator (15). The actuator is used for final precision regulation, while initial rough regulation is carried out by a hydraulic or pneumatic pressure piston (12). The actuator is located between the pressure piston and a pressure bolt. The lower tool is a pressure ram (9) and the upper tool is formed as a press die (8). The pressure bolt is a holding-down device (11).