METHOD FOR FORMING PARTS OF ROLLED SHEETS AND APPARATUS FOR PERFORMING THE SAME Russian patent published in 1998 - IPC

FIELD: forming equipment and processes, namely plastic working by means of direct action of medium pressure upon part being worked. SUBSTANCE: method comprises steps of placing blank onto die, clamping it to die by means of holder, covering blank with steel shots and acting upon it by pressure. Pressure is transferred to blank through steel shots with diameter 1-1.5 mm. Elastic gasket is placed between steel shots, holder and blank. Apparatus for performing the method includes container, rigid die, holder, steel shots, elastic gasket placed between said shots, holder and die. Clamping effort is calculated according to formula: Pcl=Pdr x tgα, where Pdr - drawing effort, α- inclination angle of holder. EFFECT: lowered cost price of forming process, enhanced quality of parts. 2cl, 1 dwg