METHOD AND DEVICE FOR THIXOTROPIC MOULDING OF CYLINDRICAL WORK PIECES Russian patent published in 2009 - IPC B21J5/06 B21J13/02 

FIELD: mechanics.

SUBSTANCE: inventions are referred to metallurgical mechanical engineering and may be used for items production from the cylindrical work pieces, mainly from aluminium alloys by thyxotropic moulding method. The work piece is heated together with a container, where it is put before heating and closed with a cup. The heated work piece is then deformed at press in a pre-heated closed die. The die includes a low semi-die with cavity, kick-off mechanism and upper semi-die fixed to the movable plate. The latter is provided with an open-end cylindrical opening. The heated container together heated work-piece and cup is mounted on the kick-off mechanism lifted above the end side of low semi-die and adjusted along the kick-off mechanism axis. After that the container is step-by-step removed from the working area during intermittent motion of the kick-off mechanism. Then press is closed with the upper semi-die and kick-off mechanism together with work piece and cup is brought to the lower position. Besides it is ensured that the work-piece is placed in the open-end opening of the upper semi-die. Then the cup is removed and work-piece is deformed by the punch setting in the open-end opening of the upper semi-die and in the cavity of the lower semi-die. Finally, the set work-piece is deformed by the upper semi-die and punch to the production of finished item.

EFFECT: increased productivity and quality of finished items, reduced consumption of metal.

2 cl, 7 dwg