Tool for deep-drawing of formed sheet metal parts - has cylinder block on tool part, with working and master cylinders, and movable pressure plate

摘要

One part of the tool has a cylinder block (40) with working cylinder (41) and master cylinder (42), and a moveable pressure plate (45). The plate is fastened to the working piston (46). The drawing die (56) supports itself on the plate, coaxially to the profile in the other part. The piston (48) of the master cylinder is connected to a piston rod (49), which projects over the plate and engages on stops (36) in the lower tool part, when the upper part moves downwards. The cylinders are in flow connection, so that medium flows from one into the other, to charge the piston. ADVANTAGE - Top tool section requires shorter stroke movements.