Abstract: A motorized manually operated pressing tool, in particular a crimping tool, with a fixed holding part, in which at least one pressing jaw is pivotably mounted about a pivot axis. The pressing jaw forms a working area and an impingement region extending in the longitudinal direction of the pressing jaw. In order to carry out a pressing operation the impingement region can be acted upon with an impinging part that is movable relative to the impingement region. The impinging part is movable in the longitudinal direction of the impingement region by exertion of manual force and by a motor.

Abstract: A method of operating a hydraulically or electric motor operated tool includes providing a device shaft having electrical contacts; providing an accumulator having an adapter comprising a wall thereon; latching the adapter to the device shaft by a latching part; and engaging a tool with the latching part thereby detaching the adapter from the device shaft, whereupon during engagement of the tool with the latching part, the wall of the adapter is destroyed. When the device shaft and adapter are engaged, walls of the device shaft and adapter form an internal cavity and the latching part is positioned entirely therewithin such that the latching part is completely hidden from view. A hydraulically or electric motor operated tool is also disclosed.

Abstract: A method for operating a hydraulically operated hand-held device is provided. The hand-held device includes a hydraulic pump, a moving part, a fixed part and a return valve with an associated valve seat. The moving part can be displaced into a working position by a build-up of hydraulic pressure produced by filling a hydraulic chamber with hydraulic medium from a storage chamber using the hydraulic pump. The moving part can be automatically moved back from the working position into an end position by opening the return valve, if a predetermined working pressure is reached. The hydraulic pressure acting upon the return valve for triggering a movement of the moving part into the end position is increased independently of reaching the predefined working pressure.

Abstract: Punch jaws are provided and are configured to punch holes and/or recesses in parts made of sheet metal. The punch jaws include first and second jaws pivotally connected to each other around a pivoting axis to pivot in a pivoting plane. A work region is formed by a punch ram on the first pivoting jaw and a punch opening on the second pivoting jaw. The punch ram carries a punch sleeve having a punch edge on its circumference. The punch sleeve moves in a side view, in which the pivoting axis is punctiform, along a circular line, a center point of which is formed by the pivoting axis, during its pivoting motion. The punch sleeve is introduced into the punch opening in a side view initially penetrates the punch opening with a front region the punch edge referred to the pivoting direction. The front region is in this side view formed on the side of the pivoting axis of the circular line with respect to a pivoting circle, along which the punch sleeve moves.

Abstract: The invention relates first to a device for applying a pressing force, comprising two pressing jaws (25, 26) which can be moved linearly relative to each other via a hydraulic piston-cylinder assembly (8). Additionally, an actuation cone (13) is provided for an expanding device (36), said cone carrying out a forward and rearward movement depending on an actuation of the hydraulic piston-cylinder assembly (8). In order to advantageously develop the device, the actuation cone (13) is connected to the hydraulic piston (9) of the hydraulic piston-cylinder assembly (8) for the forward and rearward movement. The invention further relates to a device for applying a pressing force, comprising two pressing jaws which can be moved linearly relative to each other and which can be held in receiving areas and to a pair of pressing jaws.

Abstract: A motorized manually operated pressing tool, in particular a crimping tool, with a fixed holding part, in which at least one pressing jaw is pivotably mounted about a pivot axis. The pressing jaw forms a working area and an impingement region extending in the longitudinal direction of the pressing jaw. In order to carry out a pressing operation the impingement region can be acted upon with an impinging part that is movable relative to the impingement region. The impinging part is movable in the longitudinal direction of the impingement region by exertion of manual force and by a motor.

Abstract: The disclosure relates to crimping pliers configured to crimp cable lugs onto electrical conductors. The crimping pliers includes two crimping jaws which can be swivelled towards one another. In each crimping jaw, a crimping matrix configured with a plurality of different crimping dies over a circumference is rotatably mounted with respect to an axis of rotation. The crimping matrices are permanently coupled to each other via the gearing independently of a swivel position of the crimping jaws.

Abstract: A hand expansion device is capable of expanding pipe ends. The device includes an expanding head, which can be actuated by an electric motor and/or by a hydraulic medium and which has a plurality of segments. The segments can be actuated by an expanding mandrel that can be moved in the direction of a longitudinal axis of the expanding head. The segments are expanded in a direction which is transverse to the movement direction of the expanding mandrel as the result of a first triggering of an expansion process. A second activation of the hand expansion device is only allowed if it is determined that the hand expansion device was rotated around the longitudinal axis a predetermined angle.

Abstract: The invention relates to a jaw pair for punching out holes or recesses, preferably in sheet metal parts, the jaw pair being connectable to a device (23) to be operated preferably hydraulically and being designed, for example, as a pivoting jaw pair, wherein a punch (8) is formed on one jaw and a punching opening (6) is formed on the other jaw. To provide an advantageous jaw pair for punching out holes or recesses, preferably in sheet metal parts, it is proposed that a stripper part (10) which is situated outside of an outer contour of the punch (8) in the punching direction is formed in the jaw having the punch (8) and is movable in relation to the punch (8).

Abstract: A cable lug or functional part in combination with a nut is provided. The cable lug or functional part has a tubular receiving portion for a cable, an integrally formed flat part connecting portion connected to the tubular receiving portion, the flat part connecting portion having a hole therethrough defined by a wall said hole having a central axis. The nut includes a body having an undercut. The nut is held captively and rotatably on the flat part connecting portion. The nut does not pass through the flat part connecting portion is held by a reshaped holding material portion of the flat part connecting portion which projects into the undercut. The reshaped holding material portion is accommodated in the undercut, and an axial clearance is provided between the reshaped holding material and the wall which defines the hole.

Abstract: A cable lug or functional part in combination with a nut is provided. The cable lug or functional part has a tubular receiving portion for a cable, an integrally formed flat part connecting portion connected to the tubular receiving portion, the flat part connecting portion having a hole therethrough defined by a wall said hole having a central axis. The nut includes a body having an undercut. The nut is held captively and rotatably on the flat part connecting portion. The nut does not pass through the flat part connecting portion is held by a reshaped holding material portion of the flat part connecting portion which projects into the undercut. The reshaped holding material portion is accommodated in the undercut, and an axial clearance is provided between the reshaped holding material and the wall which defines the hole.

Abstract: A method for milling a cutout using a milling cutter in a workpiece is provided. A longitudinal axis of the milling cutter is positioned in a first orientation relative to the workpiece to contact a first side of the workpiece. An enveloping cylindrical surface of the milling cutter is then used to cut a cutout which has a plurality of peripheral edges and rounded corners. The milling cutter is then placed in a second orientation which is angled relative to the first orientation. Thereafter, the enveloping cylindrical surface and an enveloping axial surface of the milling cutter are used to further cut the rounded corners of the cutout to form sharp corners.

Abstract: The invention relates first to a hand tool, including a working head, which is actuated by an electric motor and/or by a hydraulic medium and which has a working part, and including a sensor for detecting a spatial motion, wherein the working part travels through a motion sequence as the result of a first triggering by a user in order to perform a working process. In order to specify a hand tool that allows a reliable series of actuations at differential spatial orientations of the tool to be achieved, according to the invention an additional triggering is possible only if the working part has ended the motion sequence resulting from the first triggering and the tool has been spatially moved overall thereafter.

Abstract: A cable lug or functional part in combination with a nut is provided. The cable lug or functional part has a tubular receiving portion for a cable, an integrally formed flat part connecting portion connected to the tubular receiving portion, the flat part connecting portion having a hole therethrough defined by a wall said hole having a central axis. The nut includes a body having an undercut. The nut is held captively and rotatably on the flat part connecting portion. The nut does not pass through the flat part connecting portion is held by a reshaped holding material portion of the flat part connecting portion which projects into the undercut. The reshaped holding material portion is accommodated in the undercut, and an axial clearance is provided between the reshaped holding material and the wall which defines the hole.

Abstract: The invention relates in first instance to a nut having a first part (11) which has a first through opening (O1), and having a second part (12) which has a opening (O2) having an opening contour, the parts (11, 12) being connected so as to be rotatable about a rotational axis (A) which passes through the openings (O1, O2), and the openings (O1, O2) being aligned with one another, in addition, the first opening (O1) on its inner face having a profile which extends in the peripheral direction and which is interrupted in the peripheral direction. In order to provide a nut which is quickly mountable on a threaded bolt, and which has a simple design that allows greater security against the nut coming off the threaded bolt, it is proposed that the opening contour of the second opening is non-circular. The invention further relates to a combination of a bolt (4) having a cross-sectional area with a nut (10).

Abstract: A method of operating a motor-actuated handheld pressing unit includes actuating a switch to initiate a pressing operation whereby one or more pressing jaws are moved from a starting position to a closed pressing position; automatically releasing the one or more pressing jaws by using a pressing piston when a prescribed pressing force has been reached, the pressing piston being actuated hydraulically by a hydraulic medium; and checking the reaching of the prescribed pressing force by using a pressure sensor to detect the pressure of the hydraulic medium. In an embodiment, the release of the pressing jaws may be interrupted. In an embodiment, a motor moves the jaws from the starting position to the closed pressing position. In an embodiment, the pressing force is continuously measured on intervals of less than one second.

Abstract: A handheld hydraulically actuatable crimping device includes a hydraulic piston that can be displaced in a cylinder against the force of a spring. The piston is connected to a crimping part by a piston rod in order to carry out a crimping operation. The piston includes first and second partial pistons with first and second partial application faces which can be acted upon with hydraulic medium that has the same hydraulic pressure. Both partial pistons are respectively connected to a first and a second crimping part. The second crimping part can at a greater traveling distance only be acted upon with the second partial piston. The second crimping part can be acted upon with both partial pistons over a first partial traveling distance that is defined by the displacement of the first partial piston from its initial position up to the point, at which it reaches a stop. The first crimping part is axially covered in its entirety by the second crimping part.

Abstract: A hydraulic pressing unit includes a hydraulic pump, supply and hydraulic chambers, moving and stationary parts, a restoring spring, and a return valve provided within or attached to a housing. The moving part is displaced from a starting position into a pressing position as a result of filling the hydraulic chamber with a hydraulic medium from the supply chamber by using the hydraulic pump. The return valve is automatically displaced into an open position as a result of a hydraulic pressure corresponding to the pressing position, and the restoring spring moves the moving part. A piston acts on the flow of the hydraulic medium and lowers the pressure such that the return valve is displaced into the closed position.