Press using two forming rolls mounted in tilting bridges - for shaping round disks, esp. domed bases and cylindrical pressure vessels (AT 15.1.81)

摘要

On the press frame is a cradle, which can be driven vertically and carries a horizontal pivot shaft on which an inner bridge and an outer bridge can be swivelled or tilted. On bridge is an adjustable holder for an inner roll, which is moved outwards from the axis of a disk-shaped workpiece to control the radius of curvature of the dome formed by piece. Bridge carries a roll which is also moved outwards from the axis of piece synchronouslv with roll. A hydraulic motor and spindle are pref. used to adjust the cradle vertically; and holder pref. carries a hydraulic motor which rotates roll. No expensive press tools are required to mfr. domed workpieces of various shapes and sizes.