A method for making contact wires for sliprings comprising the steps of: coating and/or plating a wire with a first metal of the group of nickel, chrome or a combination thereof; coating and/or plating the wire with a second metal of the group of gold, silver, or a combination thereof; delivering laser radiation and generating an interference pattern of the laser radiation to the surface of the wire; heating the surface selectively as defined by the interference pattern, modifying of the crystal structure and/or providing protrusions and/or recesses due to melting and/or evaporation of the surface material.

A sensor element includes: an element body including, for example, a thermistor; paired lead wires drawn out from the element body; and stranded wires that are each obtained by twisting a plurality of core wires and are joined to the respective paired lead wires in a welding region. The welding region includes a main joining region provided in a predetermined region in an axis direction, and sub joining regions adjacent to the main joining region, and joining strength of each of the lead wires and the corresponding stranded wire is higher in the main joining region than in the sub-joining region.

A unitary adapter for attaching a cutting nozzle to a laser cutting head includes an inner cylinder made of ceramic, a conductive shield sintered to the outer sidewall of the ceramic cylinder, a threaded conductive holder (for accepting the cutting nozzle) mounted in an opening at one end of the ceramic cylinder, and a coaxial connector (for connection to external measuring equipment) attached to an opposite end of the ceramic cylinder. A pair of wires is formed to be embedded within the ceramic material and provide separate electrical connections between the coaxial connector and: (1) the threaded holder, and (2) the conductive shield. The various components are sintered to the ceramic body to form permanent attachments, creating a unitary structure less susceptible to the high levels of acceleration and elevated temperatures associated with the laser cutting process.

An automatic wire arranging device includes a controller, at least one driving device electrically connected with the controller, a first wire clamping jig connected with the at least one driving device, a second wire clamping jig disposed to the first wire clamping jig, at least one charge-coupled device camera connected with the controller, and at least one puncher pin connected with the at least one driving device. The first wire clamping jig opens a plurality of first clamping slots. Each of the plurality of the first clamping slots opens a through-hole. The second wire clamping jig opens a plurality of second clamping slots. The at least one puncher pin is capable of penetrating through the through-hole and pushing against a core wire to be away from one of the plurality of the first clamping slots and be blocked in one of the plurality of the second clamping slots.

Through the present invention, the load of a torch (16) applied to a welding workpiece (W) in a touch start method is reduced, and stability is significantly enhanced. A welding head (10) has a rigid straight-advancing movable part (12), an elevator drive tower (14) for moving the straight-advancing movable part (12) straight forward in the vertical direction, and a torch (16) mounted on the straight-advancing movable part (12) so as to be able to move in the vertical direction. One end part of a balance arm (28) rotatably attached to a multi-purpose support part (22) of the straight-advancing movable part (12) is connected to a torch body (30), and a balance weight (98) is attached to the other end part of the balance arm (28).

An ultrasonic welding jig includes: an anvil that supports a plate-like electric cable connection portion of a terminal; and a welding horn that is disposed so as to oppose the anvil, and in which a fitting groove is formed in an opposing surface, the fitting groove being a groove in which a portion of a core wire of an electric cable is fitted. In a state in which the core wireand the electric cable connection portion are clamped between the welding horn and the anvil, ultrasonic welding is performed by ultrasonically vibrating the welding horn in an axial direction of the core wire. In a bottom surface of the fitting groove of the welding horn, a plurality of slippage prevention grooves that are obliquely oriented and intersect an axis of the fitting groove are formed spaced apart in a direction of the axis of the fitting groove.

Systems and methods for producing mesh from wires or rods with programmed changeable steps for the longitudinal and transverse wires. The longitudinal wires (1) and the transverse wires (12) may be fed from coils or be precut. The longitudinal wires are fed in receptacles (2) on carriers (3) with the carriers being found on prefeeder carrier (4), a feeder carrier (6) with grippers (7) transports them towards the welding heads (10) and the produced mesh (20) is received by a mesh carrier (14). The carriers (3) with the receptacles (2) for the longitudinal wires on the prefeeder carrier (4), the grippers for the longitudinal wires (7) at the feeder carrier (6) and the welding heads (10) are displaced in the direction of the transverse wire without restrictions, generally in an unrestricted fashion, so as to correspond to the longitudinal wires being subjected to welding. The transverse wires are fed towards the welding heads to be welded with the longitudinal wires. The machine produces meshes with openings, grouping the longitudinal wires in groups and feeding the groups of longitudinal wires towards the welding heads, adjusting the position of the related mechanisms to the position of the longitudinal wires.

An electric wire arranging jig (40) has an electric wire arranging groove (16, 31, 41) configured to be inserted the electric wires. The electric wire arranging groove has a pair of arranging surfaces facing each other. The electric wire arranging groove is configured to have a cross-sectional shape, in a section perpendicular to a direction of the electric wires extending within the electric wire arranging groove, having a distance in a width direction of the electric wire arranging groove continuously narrowed from an insertion start portion for the electric wires toward a bottom portion of the electric wire arranging groove and the arranging surfaces each inclining from a vertical direction, at least in a part of a segment between the insertion start portion and the bottom portion.

A butt-welding device and a method for butt welding workpieces, especially for double-upset resistance-pressure butt-welding of workpieces, particularly wires, strands and profiles, has first and second clamping members for receiving the ends of the workpieces that are to be joined. At least one clamping means can be moved between a starting position and a welding position. At least one deburring tool is provided for deburring the welded workpiece ends. In addition, at least one sensor is provided to determine the geometric dimensions of the workpieces that are to be joined, especially the diameter, the width or the height in the joining plane or substantially parallel thereto, wherein a control unit controls the movement of the clamping members and/or of the deburring tool as a function of the geometric dimension.

A grid welding machine operating continuously based on the electrical resistance principle having a stationary longitudinal frame, whereon a horizontal group of parallel longitudinal wires can continuously be moved in the production direction by means of a feeding device, and having a pulling-off device, by means of which the cross wires can be pulled off a coil or rings and fed transversely to the group of longitudinal wires in a transfer device extending transversely, which transfer device can pick up multiple cross wires and convey them one after the other towards the longitudinal wires and bring them into contact with said longitudinal wires in the correct orientation according to the scaling of the cross wires and drop them there, and having electrodes and counter electrodes the weld surfaces of which can be pressed against each other with the points of intersection formed between the longitudinal wires and the cross wires therebetween.