PROCEDURE FOR REPLACEMENT OF PUNCH IN PRESS AND PRESS Russian patent published in 2011 - IPC B21D37/14 B30B15/14 B30B1/00 

FIELD: machine building.

SUBSTANCE: press consists of servo-motor, of slider, of holder for securing upper part of punch to slider, of mechanism for power transfer and of block of control of at least servo-motor and holder. The control block facilitates transfer of the slider into a position, when an upper part of the punch sits on the lower part of the punch, the upper part of the punch disconnects from the slider and the slider travels upward into standard position. Also, the slider does not reach an upper dead point. Further, upper and lower parts of the punch are extracted from the press and parts of another punch are installed. The slider is lowered into a position, when the upper part of another punch is attached to it; the said upper part is fastened and the slider is hoisted into the position when punching commences.

EFFECT: reduced time for punch replacement.

8 cl, 8 dwg