DIE FOR EXTRUSION OF PARTS WITH BLIND HOLLOW (VERSIONS) Russian patent published in 1999 - IPC

FIELD: plastic metal working, in particular, designs of dies for extrusion used in experimental investigations of metal forming in stamping of hollow parts with and without flanges and also in small lot production. SUBSTANCE: die has flexible member ensuring the preset motion of female die in forming flange by metal flow into slot of variable height; press bushing transmitting female die motion from press slider; regulating rings setting the moment of beginning of female die motion. The die may be also provided with a set of metal rings of different heights ensuring the gap of constant height between female die and male die in forming of flange by metal flow into slot of invariable height. EFFECT: extended functional capabilities of die in extrusion of parts with blind hollow. 2 cl, 2 dwg