Abstract: A press die for a pressing tool for pressing round tubular sections of at least two workpieces has a through-hole with a circumferential die surface. It includes at least two die parts. Each of the at least two die parts comprises a circumferential section of the through-hole. At least one of the die parts comprises a round target contour over at least one region of the associated circumferential section of the through-hole. At least one other die part comprises a contour deviating from the round target contour over at least one region of the associated circumferential section of the through-hole. Thus, the circumferential sections of the through-hole associated with the at least two die parts are asymmetrical relative to each other with respect to a chord formed by the associated circumferential section of the through-hole.

Abstract: A separating device for the chipless cutting to length of plastic workpieces, in particular plastic pipes, has a support part as support for the plastic workpiece and a blade which is movable relative to the support part. The separating device is configured to supply a wetting liquid to the blade at its contact point with the plastic workpiece to be machined. A method for the chipless cutting to length of a plastic workpiece uses a water-containing gel as an application lubricant for the contact points on the workpiece side during the chipless cutting to length of a plastic or plastic composite workpiece.

Abstract: An apparatus for cutting corrugated pipes to length includes a clamping device configured to act radially with respect to an axis so as to fix a corrugated pipe in a machining position. The apparatus also includes a cutting tool moveable into an active position against the corrugated pipe in the machining position and configured to bring about a separation by moving the cutting tool and corrugated pipe relative to one another. A stop device is configured to engage in a corrugation trough of the corrugated pipe wherein a spacing between the cutting tool and stop device is variable in the axial direction with respect to the axis.

Abstract: A coupling for connecting a driving device to an expander head configured to expand pipes and hoses and to be actuated via an expanding mandrel driven by the driving device includes a first coupling part associated with the driving device and a second coupling part associated with the expander head. The first coupling part includes a through-hole that acts as a passage for the expanding mandrel and radially outwardly projecting circumferential portions disposed at a circumference, a rear face of the circumferential portions including at least one contact face. When connected, the coupling parts are disposed along an axis along which the expanding mandrel is movable for the actuation of the expander head. The second coupling part includes at least one counter-portion configured to act on a respective one of the at least one contact face of the circumferential portions.

Abstract: A method for manufacturing a pressing tool includes shaping a blank, which is able to be hardened, at least in part, to a final size of a pressing jaw. Then, a laser beam is applied to at least one selected region of a surface of the pressing jaw so as to form at least one hardened surface layer.

Abstract: A method for manufacturing a pressing tool includes shaping a blank, which is able to be hardened, at least in part, to a final size of a pressing jaw. Then, a laser beam is applied to at least one selected region of a surface of the pressing jaw so as to form at least one hardened surface layer.

Abstract: An apparatus for cutting corrugated pipes to length includes a clamping device configured to act radially with respect to an axis so as to fix a corrugated pipe in a machining position. The apparatus also includes a cutting tool movable into an active position against the corrugated pipe in the machining position and configured to bring about a separation by moving the cutting tool and corrugated pipe relative to one another. A stop device is configured to engage in a corrugation trough of the corrugated pipe wherein a spacing between the cutting tool and stop device is variable in the axial direction with respect to the axis.

Abstract: A device for expanding a hollow body includes a plurality of sector-shaped expandable jaws disposed in a holder and distributed about a central axis. The expandable jaws extend along the axis to a free end and are radially movable with respect to the axis. Each of the expandable jaws includes: a cylindrical surface having a radius corresponding to a radius of the expanded hollow body and an inward radial taper at an area of the free end; and a plurality of projections and recesses disposed in a joint region and arranged in an alternating manner with each other along the axis and at least partially extending into the area of the free end. The cylindrical surfaces are rounded off to transition to respective outer surfaces of the projections. The outer surfaces of the projections extend, at least at ends of the projections, radially inward with respect the cylindrical surfaces.

Abstract: A coupling for connecting a driving device to an expander head configured to expand pipes and hoses and to be actuated via an expanding mandrel driven by the driving device includes a first coupling part associated with the driving device and a second coupling part associated with the expander head. The first coupling part includes a through-hole that acts as a passage for the expanding mandrel and radially outwardly projecting circumferential portions disposed at a circumference, a rear face of the circumferential portions including at least one contact face. When connected, the coupling parts are disposed along an axis along which the expanding mandrel is movable for the actuation of the expander head. The second coupling part includes at least one counter-portion configured to act on a respective one of the at least one contact face of the circumferential portions.

Abstract: A device for expanding a hollow body includes a plurality of sector-shaped expandable jaws disposed in a holder and distributed about a central axis: The expandable jaws extend along the axis to a free end and are radially movable with respect to the axis. Each of the expandable jaws includes: a cylindrical surface having a radius corresponding to a radius of the expanded hollow body and an inward radial taper at an area of the free end; and a plurality of projections and recesses disposed in a joint region and arranged in an alternating manner with each other along the axis and at least partially extending into the area of the free end. The cylindrical surfaces are rounded off to transition to respective outer surfaces of the projections. The outer surfaces of the projections extend, at least at ends of the projections, radially inward with respect the cylindrical surfaces.