Abstract: A manually operated press includes a cam disc that is pivotably mounted about an axis, an actuation member that acts upon the cam disc for producing a pivoting movement, a press slide and a press stand that accommodates the press slide allowing it to perform a stroke movement. The pivoting movement triggered by the actuation member is converted by the cam disc into a stroke movement of the primary piston and is transferred to the press slide via the hydraulic line and the secondary piston.

Abstract: A manually operated press comprises an actuation lever coupled to a shaft assembly. An actuation of the actuation lever is transformed into a stroke movement of a press ram. A clutch assembly is provided for interrupting a flow of force between the actuation lever and the press ram. The clutch is adapted to separate an input shaft from an output shaft depending on predetermined pressing parameters. The input shaft extends as an inner shaft through the output shaft. The clutch assembly has a first clutch designed as a stroke stop for immobilizing the input shaft with a press housing depending on the pressing parameter, and a second clutch designed as an overload clutch for interrupting a flow of force between the input shaft and the output shaft.

Abstract: A manually operated press comprises an actuation lever coupled to a shaft assembly. An actuation of the actuation lever is transformed into a stroke movement of a press ram coupled to the shaft assembly and, accordingly, into a change of a relative displacement position of the press ram. A clutch assembly is provided for interrupting a flow of force between the actuation lever and the press ram. The shaft is at least two-piece, namely configured with an input shaft and an output shaft. The clutch is adapted to separate the input shaft from the output shaft depending on the pressing force and/or the relative displacement position of the press ram. The shaft assembly comprises an input shaft and an output shaft. The input shaft extends as an inner shaft through the output shaft being configured as a hollow shaft.

Abstract: A manually operated press has an actuating member, the movement of which being translated into a stroke movement of a press ram. A stroke stop is provided for inhibiting an undesired stroke movement of the press ram. The stroke stop comprises a first sensor for detecting the stroke movement of the press ram as well as a clutch. The clutch is actuated under the control of signals of the first sensor and is adapted to inhibit a transmission of force between the actuating member and the press ram.

Abstract: A manually operated press has an actuating member, the movement of which being translated into a stroke movement of a press ram. A stroke stop is provided for inhibiting an undesired stroke movement of the press ram. The stroke stop comprises a first sensor for detecting the stroke movement of the press ram as well as a clutch. The clutch is actuated under the control of signals of the first sensor and is adapted to inhibit a transmission of force between the actuating member and the press ram.

Abstract: A method is described for operating an electric press which comprises an electrically actuated press ram, at least one displacement sensor for sensing positions of the displacement of the press ram during its working stroke, at least one force sensor for sensing compressive force applied by the press ram during the working stroke onto workpieces to be processed, and a control system which controls the working stroke in terms of displacement and compressive force. Parameters which indicate a successful course or completion of the pressing operation are dynamically adapted as a function of the profile of the compressive force versus the displacement of the press ram.

Abstract: A press has a press ram actuated by a drive apparatus and a dosing system to be actuated by the drive apparatus for lubricating at least the drive apparatus.

Abstract: A fail-safe circuit (10) comprises a storage battery (11) for electrical charges as well as a first charge path (12) which optionally connects the storage battery (11) to a first potential (UL). A second charge path (14) and a third charge path (15) optionally connect the storage battery (11) with a second or third potential (UE1, UE2). The first and second switching devices (16, 17), which operate as function of the first and second switching events (TA, TB), each comprise a first and second switching contact (A1, B1) in the first charge path (12) and a second switching contact (A2, B2) in the second and third charge path (14, 15). The actuation coils (LC, LD) of the third and fourth switching devices (18, 19) are in the second and third charge path (14, 15) and each have a first switching contact (C1, D1) in the first charging path (12) and a second contact (C2, C2', D2, D2').

Abstract: A press has a press ram actuated by a drive apparatus and a dosing system to be actuated by the drive apparatus for lubricating at least the drive apparatus.