COLLAPSIBLE PRESS TOOL FOR HOT DIE FORGING Russian patent published in 1994 - IPC

FIELD: plastic metal working. SUBSTANCE: press tool has body and changeable impression insert secured in blind socket of body by at least two vertically inclined wedges. Channels and wedges narrow down from working part of die and socket channels in narrow portion are bent round radius. Front end of each wedge is reduced in thickness to ensure resilient bending in narrow portion of corresponding socket channel. Rear end of wedge has recess for engagement with remover. EFFECT: enhanced efficiency. 9 dwg