Abstract: A method of fabricating an interfacial structure, the interfacial structure comprising a substrate and a projection on the substrate, the method comprising the steps of: a) providing the substrate; b) creating a number of steps on a surface of the substrate; and c) fabricating the projection on the substrate by additive manufacturing onto the number of steps, thereby creating a stepped interfacial joint between the substrate and the projection. A fabricated interfacial structure comprising: a substrate having a number of steps created on a surface of the substrate; a projection fabricated by additive manufacturing onto the number of steps; and a stepped interfacial joint between the substrate and the projection.

Abstract: Plain bearing providing an outer ring with an inner surface, an inner ring with an outer surface, the rings being symmetrical around an axis and metallic, at least on the rings being a textured ring with a texturation consisting of a plurality of micro-cavities arranged onto a textured surface. A composite self-lubricating composite liner that is interposed between the inner surface of the outer ring and the outer surface of the inner ring, so that upon sliding movement of the textured ring with respect to the composite liner, some solid particles of the liner, acting as a solid lubricant, are detached from the composite liner and migrate between the sliding surfaces until they get retained into the micro-cavities.

Abstract: Plain bearing providing an outer ring with an inner surface, an inner ring with an outer surface, the rings being symmetrical around an axis and metallic, at least on the rings being a textured ring with a texturation consisting of a plurality of micro-cavities arranged onto a textured surface. A composite self-lubricating composite liner that is interposed between the inner surface of the outer ring and the outer surface of the inner ring, so that upon sliding movement of the textured ring with respect to the composite liner, some solid particles of the liner, acting as a solid lubricant, are detached from the composite liner and migrate between the sliding surfaces until they get retained into the micro-cavities.

Abstract: Bearing component providing unaffected material that has a surface, which has been subjected to a hard machining process during where the temperature of the surface did not exceed the austenitizing temperature of the unaffected material. The surface of the bearing component includes a white layer formed during the hard machining process. The white layer has a nano-crystalline microstructure that includes grains having a maximum grain size up to 500 nm. The white layer is located directly adjacent to the unaffected material of the bearing component, where no dark layer is formed during the hard machining process.

Abstract: Bearing component providing unaffected material that has a surface, which has been subjected to a hard machining process during where the temperature of the surface did not exceed the austenitizing temperature of the unaffected material. The surface of the bearing component includes a white layer formed during the hard machining process. The white layer has a nano-crystalline microstructure that includes grains having a maximum grain size up to 500 nm. The white layer is located directly adjacent to the unaffected material of the bearing component, where no dark layer is formed during the hard machining process.

Abstract: The present invention relates to a method for performing in-process compensating a machining operation on a workpiece, wherein the compensation process includes generating a control signal representative of magnitude of a contact force exerted on a cutting tool in a normal direction in relation to a machining surface of the workpiece, determining a compensation parameter value based on the control signal, and compensating the machining operation based on the compensation parameter value. The present invention also relates to corresponding machine arrangement for performing a machining operation on a workpiece, such as a hard turning process.

Abstract: The present invention relates to a method for performing in-process compensating a machining operation on a workpiece, wherein the compensation process includes generating a control signal representative of magnitude of a contact force exerted on a cutting tool in a normal direction in relation to a machining surface of the workpiece, determining a compensation parameter value based on the control signal, and compensating the machining operation based on the compensation parameter value. The present invention also relates to corresponding machine arrangement for performing a machining operation on a workpiece, such as a hard turning process.

Abstract: A method for detecting the surface character of objects in road traffic or of persons, especially pedestrians, vehicles, obstacles and the like, in which signals are emitted from a vehicle that are reflected by a person or an object, and in which the reflected signals are received and evaluated in the vehicle, wherein the emitted signals are transmit pulses whose echo pulses are received, and based on the signal characteristics of the echo pulses, the surface character is inferred, and from that, it is inferred whether a person or an object is positioned in front of the vehicle.

Abstract: A method and device for effecting automatic centering of an annular workpiece on a rotating surface having a rotational center involves arbitrarily positioning the workpiece on the slowly rotating surface, applying a support for the workpiece by way of spaced apart contact members that individually contact the workpiece and are synchronously movable in a guided reciprocating manner towards and away from the rotational center of the rotating surface. The contact members are gradually retracted away from the rotational center of the rotating surface until the workpiece is unaffected by the contact members during one revolution of the rotating surface so that the workpiece is centered, and the center of the workpiece coincides with the rotational center of the rotating surface. At least one of the contact members is provided with a mechanism for counteracting a friction force acting on the workpiece.

Abstract: A method for detecting the surface character of objects in road traffic or of persons, especially pedestrians, vehicles, obstacles and the like, in which signals are emitted from a vehicle that are reflected by a person or an object, and in which the reflected signals are received and evaluated in the vehicle, wherein the emitted signals are transmit pulses whose echo pulses are received, and based on the signal characteristics of the echo pulses, the surface character is inferred, and from that, it is inferred whether a person or an object is positioned in front of the vehicle.

Abstract: Method for manufacturing improved contact surfaces, particularly contact surfaces in rolling bearing components such as rings or rolling bodies, is disclosed. The method subjects a surface of the rolling bearing component to a hard turning machining operation for forming by means of a hard turning tool a rolling or sliding contact surface. The hard turned surface is subjected to a finishing operation to remove the basic turning groove structure in a light machining way such that micro-pockets created in the hard turning operation remain. The hard turning tool during the hard turning machining operation is subjected to a vibration, substantially in the longitudinal direction of the tool, thereby creating in a controlled manner in the hard-turned surface a number of indentations, which are substantially arc-shaped in cross-sectional direction, prior to the finishing operation. Indentations improve lift-off and lubricating properties during later operation of the rolling bearing.

Abstract: A method and device for effecting automatic centering of an annular workpiece on a rotating surface having a rotational center involves arbitrarily positioning the workpiece on the slowly rotating surface, applying a support for the workpiece by way of spaced apart contact members that individually contact the workpiece and are synchronously movable in a guided reciprocating manner towards and away from the rotational center of the rotating surface. The contact members are gradually retracted away from the rotational center of the rotating surface until the workpiece is unaffected by the contact members during one revolution of the rotating surface so that the workpiece is centered, and the center of the workpiece coincides with the rotational center of the rotating surface. At least one of the contact members is provided with a mechanism for counteracting a friction force acting on the workpiece.

Abstract: Patent Method for manufacturing improved contact surfaces, particularly contact surfaces in rolling bearing components such as rings or rolling bodies, is disclosed. The method subjects a surface of the rolling bearing component to a hard turning machining operation for forming by means of a hard turning tool a rolling or sliding contact surface. The hard turned surface is subjected to a finishing operation to remove the basic turning groove structure in a light machining way such that micro-pockets created in the hard turning operation remain. The hard turning tool during the hard turning machining operation is subjected to a vibration, substantially in the longitudinal direction of the tool, thereby creating in a controlled manner in the hard-turned surface a number of indentations, which are substantially arc-shaped in cross-sectional direction, prior to the finishing operation. Indentations improve lift-off and lubricating properties during later operation of the rolling bearing.

Abstract: The present invention is an anti fall device for use with scissor type mechanically actuated lifting devices. The anti fall device comprises a a slave safety hydraulic cylinder capable of supporting a lifting device upon failure of a drive assembly thereby arresting descent of the lifting device when the lifting device is normally stationary or moving upwardly and a drive assembly of the lifting device fails and the lifting device begins to descend uncontrollably. The hydraulic cylinder includes a one way check valve for preventing reverse hydraulic fluid flow upon uncontrolled descent of the lifting device thereby arresting movement of the hydraulic cylinder and arresting descent of the lifting device. The invention also includes an hydraulic velocity fuse in fluid communication with the hydraulic cylinder. The velocity fuse is triggered at a preselected fluid flow rate for controllably lowering the lifting device.

Abstract: A method for cuffing or hard turning the surface of a workpiece comprising using a cutting tool in which a cooling fluid is supplied to the cutting area by means of at least one jet nozzle. The cooling fluid is supplied as a jet with high pressure leaving the jet nozzle with a pressure above 60 bar.

Abstract: The present invention is an anti fall device for use with scissor type mechanically actuated lifting devices. The anti fall device comprises a a slave safety hydraulic cylinder capable of supporting a lifting device upon failure of a drive assembly thereby arresting descent of the lifting device when the lifting device is normally stationary or moving upwardly and a drive assembly of the lifting device fails and the lifting device begins to descend uncontrollably. The hydraulic cylinder includes a one way check valve for preventing reverse hydraulic fluid flow upon uncontrolled descent of the lifting device thereby arresting movement of the hydraulic cylinder and arresting descent of the lifting device. The invention also includes an hydraulic velocity fuse in fluid communication with the hydraulic cylinder. The velocity fuse is triggered at a preselected fluid flow rate for controllably lowering the lifting device.

Abstract: A method for cuffing or hard turning the surface of a workpiece comprising using a cutting tool in which a cooling fluid is supplied to the cutting area by means of at least one jet nozzle. The cooling fluid is supplied as a jet with high pressure leaving the jet nozzle with a pressure above 60 bar.