Re-shaping a plate-shaped workpiece involves applying pneumatic pressure to pre-deform one side of workpiece, then re-shaping workpiece mechanically and/or hydro-mechanically

摘要

The method involves applying a pneumatic pressure to pre-deform one side of the workpiece (1), then re-shaping the workpiece mechanically and/or hydro-mechanically. A pneumatic pressure of from three to five bars can be applied. The pre-deformation can be limited by a counter support. Only part of the workpiece may be affected by the pre-deformation. Independent claims are also included for the following: an arrangement for re-shaping a plate-shaped workpiece.