Hydraulic control arrangement and press with such a control arrangement

Abstract

Hydraulic control arrangement for a press (1; 101) with a working cylinder (14) having at least one working chamber (18) which is bounded by a piston (16) on which a pressure in the press (1;101) a workpiece that can be machined can be supported against an upper tool (4), wherein an adjustable throttle device (32) is arranged in a first pressure medium flow path (28) via which the working chamber (18) can be connected to a pressure medium sink (T), via which a pressure in the working chamber (18) can be regulated, wherein a hydraulic machine (34) for recuperating press work is arranged in a second pressure medium flow path (30) via which the working chamber (18) can be connected to the pressure medium sink (T), characterized by a valve (76) via which the second pressure medium flow path (30) can be shut off, and a circulation flow path (80) via which a pressure medium connection of the hydraulic machine that can be connected to the at least one working chamber (18) can be connected to a pressure medium connection of the hydraulic machine (34) that can be connected to the pressure medium sink (T).;