Abstract: The invention relates to an articulated lever press consisting of a press stand (1.1) and a frame-shaped press slide (2.1), the slide (2.1) possessing a hydraulic cylinder drive (2.12) which is arranged on it and is connected to the multi-articulated support (2.7) guided in the center of the press in the slide (2.1). At least two connecting rods (2.8) are movably arranged on the multi-articulated support, the other ends of the connecting rods each engaging one of the two articulated levers (2.10) or (2.11) which are mounted on the slide (2.1) and on the press frame (1.1) so that their height can be adjusted.The object is essentially to keep the working range of the slide (2.1) adjustable, irrespective of the slide travel and while maintaining slide guidance.It is proposed that the press stand (1.1) be a twin-stand frame partially closed even at the front end. The working range of the slide (2.1) in the stand (1.1) is supported and adjusted by synchronously driven shafts (2.

Abstract: The invention relates to an articulated lever press consisting of a press stand (1.1) and a frame-shaped press slide (2.1), the slide (2.1) possessing a hydraulic cylinder drive (2.12) which is arranged on it and is connected to the multi-articulated support (2.7) guided in the center of the press in the slide (2.1), and at least two connecting rods (2.8) are movably arranged on the said multi-articulated support, the other ends of the said connecting rods each engaging one of the two articulated levers (2.10) or (2.11) which are mounted on the slide (2.1) and on the press frame (1.1) so that their height can be adjusted.The object is essentially to keep the working range of the slide (2.1) adjustable, irrespective of the slide travel and while maintaining slide guidance.It is proposed that the press stand (1.1) be a twin-stand frame partially closed even at the front and end. The working range of the slide (2.1) in the stand (1.1) is supported and adjusted by synchronously driven shafts (2.

Abstract: An elbow lever sheet metal cutting press equipped with a pressure medium cylinder drive located between elbow lever systems, which suspend the press ram from the press frame. Adjustable lateral guides are attached along the columns of the press frame. A partition wall is located between the press frame and the press ram. Also, a piston rod guide is attached to the partition wall. These structures ensure the straight movement of the press ram. The distance between the lower end of the partition wall and the press table is as short as possible to minimize frame vibration. The inclusion of a box girder and the partition wall keeps the press table horizontally and vertically rigid.

Abstract: The invention relates to a gripper or clamp feed advance mechanism for sheet metal bands or profiled forms on presses, having two feed advance clamps or grippers on the feed-side of the press and having a spacing therebetween in the direction of adjustment, whereby the feed advance and return stroke may be carried out between two press strokes. The purpose of the invention is a feed advance mechanism which makes possible the easiest adjustment of the feed advance path and the direction as well as of the spacing between the feed advance clamps or grippers, with a minimal feed advance force and practically any desired material dimension. It is intended that the spacing between the feed advance clamps or grippers (5) which determines the advance and return stroke, is achieved synchroneously through the adjustment of the crank radii (13) of the crank drive (10, 21, 23) by a common adjustment member (12).

Abstract: A toggle-joint press or machine tool is easily adaptable to one of several common press drive mechanisms. Two forms of piston-in-cylinder (hydraulic or pneumatic) drives are disclosed as well as one form of a crank type drive.