Deep-drawing tool for sheet steel - has forming sleeve surrounding forming contour, between sheet holder and contour, and support on additional piston

摘要

The deep drawing tool has a forming contour on a working piston. This is driven against drawing direction by charging the rear end of the piston with a flow medium. A sheet holder surrounding the contour supports itself on another piston, and the two charging chambers are in flow connection. A forming sleeve (21) is located between the sheet holder (22) and forming contour (20), and surrounds the contour. The sleeve supports itself on another piston (15), the charging chamber of which is connected to that of the working piston (14).