Abstract: A connecting element for forming a punch-riveted connection of at least two component sections is provided, wherein a foot section has at its free end a foot base with a basic shape which is cylindrical or at least approximated to the cylindrical shape. According to the invention, an annular circumferential elevated portion is formed in the foot section between the foot base and the shaft section.

Abstract: A die for a riveting tool for implementing a punch rivet connection between at least two joined part sections is proposed, the die being used in a state provided in the riveting tool for supporting the joined part sections during a connection procedure and a die front side facing toward a movable punch of the riveting tool, using which a rivet element can be pressed in a punching manner through the joined part sections to be connected, an embossing section of the die protruding in relation to adjacent areas of the die front side and causing an embossment in the die-side joined part section, so that components of the joined part material flow into an external depression on the rivet element. According to the invention, the embossing section is implemented as divided into sections. The invention additionally relates to a riveting tool.

Abstract: A hydropneumatic device having pressure a working part with a working piston guided in the working part and an intensifier part with an intensifier piston guided in the intensifier part. A connecting section for a hydraulic connection of the working part and of the intensifier part provides a connecting line for passage of hydraulic fluid between the working part and the intensifier part. The connecting section includes an adapter component which can be mounted on the working part and the intensifier part, and in the interior of which the connecting line is formed. In the mounted state of the adapter component, an opening, which is provided at the side on the working part, of a hydraulic chamber of the working part is connected, via the connecting line, to an opening, which is provided at the side on the intensifier part, of a hydraulic chamber of the intensifier part.

Abstract: A valve for controlling a hydropneumatic device for pressure intensifying having a working plunger and an intensifier plunger for pressure intensifying, the intensifier plunger being designed to move the working plunger hydraulically with a comparatively high transmission ratio on account of a pneumatic actuation, the valve having a differential plunger arrangement with a first plunger with a first active plunger face in a first pressure space and a second plunger with a second active plunger face in a second pressure space, the first plunger being coupled to the second plunger, the first pressure space being equipped with a first connector for, for example, a pneumatic return stroke space of the working plunger, and the second pressure space being equipped with a second connector for a pneumatic pressure source which differs from the return stroke space.

Abstract: A connecting element for forming a punch-riveted connection of at least two component sections is proposed, wherein a foot section has at its free end a foot base with a basic shape which is cylindrical or at least approximated to the cylindrical shape. According to the invention, an annular circumferential elevated portion is formed in the foot section between the foot base and the shaft section.

Abstract: The invention relates to a device, a method and a tool for producing a rimmed passage in a component, said device having a die unit and a punch apparatus, wherein the die unit can be arranged on a first side of the component and the punch apparatus can be arranged opposite on a second side of the component. As claimed in the invention, the punch apparatus includes a hollow punch with a punch recess which is matched to a die section of the die unit in such a manner that when there is a relative movement between the unit and the punch apparatus, the die section enters the punch recess, wherein the punched-out material region is pushed into the punch recess.

Abstract: A die for a riveting tool for implementing a punch rivet connection between at least two joined part sections is proposed, the die being used in a state provided in the riveting tool for supporting the joined part sections during a connection procedure and a die front side facing toward a movable punch of the riveting tool, using which a rivet element can be pressed in a punching manner through the joined part sections to be connected, an embossing section of the die protruding in relation to adjacent areas of the die front side and causing an embossment in the die-side joined part section, so that components of the joined part material flow into an external depression on the rivet element. According to the invention, the embossing section is implemented as divided into sections. The invention additionally relates to a riveting tool.

Abstract: A method and tool for producing a press joint connection, in which portions of the radial lateral walls of an opening of a die are configured as flexible displaceable segments, whereas other sections, when viewed from a periphery of the opening, remain rigidly connected to the die.

Abstract: A method is disclosed for operating a hydropneumatic device (1) for pressure multiplication, with a working piston and a multiplier piston (9) for pressure multiplication on to the working piston and with an accumulator piston (3) for an urgent movement of the working piston by forcing hydraulic fluid out of an accumulator chamber (12), wherein a ventilation opening (13) is provided in the accumulator chamber (12), through which air drawn into the accumulator chamber (12) can be discharged during a maintenance process. According to the invention for an operating mode in which power strokes are executed, the hydraulic fluid volume in the accumulator chamber (12) is discharged below the ventilation opening (13) in the accumulator chamber. The hydraulic fluid pump is additionally disclosed.

Abstract: Proposed is a hydro-pneumatic pressure transformation device with a working piston (3) and a transformer piston (17) for transforming the pressure exerted upon the working piston (3), wherein the transformer piston (17) features a working stroke chamber (19) for the power stroke and a return stroke chamber (15) for the return stroke, and wherein the working stroke chamber (19) can be subjected to an operating pressure for the power stroke. According to the invention, pressurization means are provided for changing over the return stroke chamber (15) between a low pressure that lies at least approximately in the range of atmospheric pressure or at atmospheric pressure and an intermediate pressure that lies between the low pressure and the operating pressure during the course of the power stroke and the return stroke. A method for operating a hydro-pneumatic device is also proposed.

Abstract: The invention relates to a method and tool for producing a press joint connection. According to the invention, portions of the radial lateral walls of the matrix opening (3) are configured as flexible displaceable segments, whereas other sections (5), when viewed from the periphery of the matrix opening (3), remain rigidly connected to the die.

Abstract: An apparatus and method for joining the assembly components that allows for the adjustment of working stroke and press forces during operation in order to control the thickness of the resulting joint point.

Abstract: A hydropneumatic pressure transmission device having a working piston and a transmitter piston for pressure transmission to the working piston is proposed, with the working piston being guided in a housing space in such a way that, coupled to the movement of the working piston, hydraulic fluid must flow from a first region via a first connecting section into a second region. According to the invention, a switchable second connecting section is provided so as to be connected parallel to the first connecting section.

Abstract: The invention relates to a hydropneumatic pressure intensifier comprising a radial seal (24, 27). Said seal is arranged between working pistons (2) and the cylinder bore which accommodates said pressure intensifier or in a bore hole (15) between the working chamber (3) and a storage area (14), whereby the radial seals consist of viscoplastic and flexible synthetic material.

Abstract: A machine tool for manual actuation is proposed, in which an intermediate rotary bearing, which has a retaining handle, is disposed on the housing that receives the tool and an abutment, and a cantilevered beam which leads to a rotatable retaining device is secured to the intermediate rotary bearing.