Provided are a method for machining the outer circumference of a metal end cross-section, the method being capable of easily forming at least any of a deep groove, a deep recess, and a flange which are smooth and uniform in the longitudinal direction of a metal rod or metal pipe in the periphery of the cross-section of any of the end part of the metal rod or metal pipe, the drawn end part of the metal rod or metal pipe, and the hub hole forming part of the metal pipe; and a method for joining a metal component obtained by the machining method with another member. The machining method of the present invention is characterized in that: splitting is advanced by successively repeating press forming operation multiple times by using a slitting punch, in which a tip part has a sharp cutting edge, and the cutting edge is formed so as to have a shape equal to or partly equal to the outer shape of the cross section of a metal end part and so as to have a diameter smaller than the outer diameter of the cross section of the splitting object; and in order to control the depth of metal cracking cleft created with each press forming operation, a pressing die for pinching the outside of a metal rod or at least a pressing die of one side of pressing dies for pinching the inside and the outside of a metal pipe is disposed while its position is moved according to the distance of a split portion.

The invention relates to a method and a coating device for applying a cladding layer onto the inner side of a carrier layer during the production of a multilayer heavy-duty pipe, with a pressure-exerting unit having a force application unit. A stable application of the cladding layer is achieved by having the coating device comprise a rolling tool with the pressure-exerting unit and the force application unit, and by providing the pressure-exerting unit with at least one pressure roller having a diameter that is smaller than the inside diameter of the heavy-duty pipe to be produced, and with at least one support element acting diametrically counter thereto with a supporting force in the operating state.

A pressing tool for pressing workpieces is described. The pressing tool comprises a hydraulic pump for conveying a hydraulic fluid, an electric motor for driving the hydraulic pump, a working cylinder which is hydraulically connected to an outlet of the hydraulic pump, a pressure-relief valve which is hydraulically connected to the outlet of the hydraulic pump and which opens at a certain predefined pressure P.sub.v of the hydraulic fluid, an electronic control for controlling the electric motor and a sensor 60 which monitors the state of the pressure-relief valve and emits a signal which describes the state of the pressure-relief valve to the electronic control. Furthermore, a method of operating such a pressing tool is described.

Provided is a crimp structure in which an inner member and an outer member that is arranged outside the inner member are joined to each other. The inner member includes: an insertion portion having a columnar surface-like outer circumferential surface; and a recessed portion provided in the outer circumferential surface. The outer member includes: a cylindrical portion that forms an opening into which the insertion portion is inserted; a reduced-diameter portion that is formed in the cylindrical portion, and has a plastically deformed shape such that a diameter of the cylindrical portion is reduced annularly inward in a radial direction; and a protruding portion that has a plastically deformed shape such that a part, in a circumferential direction, of the reduced-diameter portion has entered the recessed portion. Relative rotation of the inner member and the outer member can be suppressed.

A pressing tool, particularly a pipe pressing tool, for plastically deforming a tubular workpiece, particularly a fitting, is described. The pressing tool includes pressing jaws and a motor which is adapted to drive the pressing jaws in order to apply a force to the workpiece. Further, a method of operating such a pressing tool, and pressing jaws as well as a tubular workpiece are described.

A pressing tool for plastically deforming a tubular workpiece, and particularly a fitting is described. The pressing tool comprises a pressing jaw receptacle for coupling a pressing jaw assembly to the pressing tool. The pressing tool further comprises a drive which is adapted to drive a coupled pressing jaw assembly in order to apply force to a workpiece, and a sensor system which is adapted to identify a pressing jaw assembly and to provide corresponding sensor data, wherein a control is adapted to control the drive based on the sensor data. Also described are related methods, pressing jaw assemblies, and workpieces.

A crimping system for crimping fittings on hoses is disclosed and include an interface and a crimper machine. The crimper machine is configured to analyze collected information based on identified hose and fitting properties; perform a crimping operation based on the collected information and the identified hose and fitting properties; measure crimping characteristics for the crimping operation; generate an alert based on the measured crimping characteristics and the collected information; and provide the alert to the interface.

A linear solenoid valve has a spring member and a spring load adjusting member, which is screwed into a sleeve member of the linear solenoid valve in order to adjust a spring load of the spring member. The sleeve member has a female screw portion and a swaged-claw forming portion is formed at an axial end surface of the female screw portion. Multiple swaging punches are prepared, each of which has a punching tooth portion of a punching portion. A punching area of the punching tooth portion differs from the swaging punch to the swaging punch. One of the multiple swaging punches is selected depending on a press-direction distance between the swaged-claw forming portion and an axial end surface of the adjust screw member. When the press-direction distance is smaller than a predetermined distance range, the swaging punch having a larger punching area for the punching tooth portion is selected, wherein the punching area is larger than a punching area of another swaging punch which is selected when the press-direction distance is larger than the predetermined distance range.

A method of operating a hydraulic power tool. The method includes performing an operation with the hydraulic power tool, detecting, with a sensor, an operational parameter during the operation of the hydraulic power tool, and storing a plurality of data points based on the operational parameter and a corresponding sampling time for each of the plurality of data points. The method also includes sending, via a transceiver on the hydraulic power tool, the plurality of data points and corresponding sampling times to an external device, displaying, on a display screen of the external device, an expected data point, and displaying, on the display screen of the external device, an actual data curve based on the plurality of data points and corresponding sampling times. The actual data curve is overlaid on the expected data point.

A kit and a related method for connecting pipes, comprising: including: a tubular fitting having at least one access end for an end portion of a respective pipe to be connected; said access end of the fitting having at least one fluid-sealing gasket interposed between an inner surface of the fitting and an outer surface of the pipe; and a pressing tool configured to implement a radial plastic deformation action on the access end defining a stable coupling condition between said fitting and the respective pipe; the pressing tool comprising including at least one tooth extending radially with respect to the circumferential extension of the fitting and the pipe; said access end of the fitting comprising including at least one radial projection formed as a result of the plastic deformation action, said projection being at least partially inserted in the outer surface of said pipe.