DEVICE FOR MANUFACTURE OF HOLLOW FORGED PIECES BY SWAGING METHOD Russian patent published in 1994 - IPC

FIELD: forging equipment. SUBSTANCE: device for manufacture of hollow forged pieces by swaging method has mandrel with entry and working sections and arresting jig of periphery metal flow fixedly attached to bearing plate. Bottom plate is spring-loaded relative to bearing plate and is mounted concentrically to mandrel for limited reciprocating motion. At the initial moment top surface of bottom plate is placed on the level of height of arresting jigs and zone of conjugation of working and entry sections of mandrel. At the moment of deformation bottom surface of bottom plate is engageable with bearing plate. Space between bottom and bearing plates exceeds height of piece of work. EFFECT: enhanced operating reliability. 4 dwg