Abstract: A wire electrical discharge machine is provided with a rotating shaft for rotating a workpiece. In wire electrical discharge machining according to a machining program, a current average rotation radius at a current workpiece machining point is calculated for each predetermined period, based on average rotation radii at respective end points of a block to be executed and a directly preceding block and an amount of movement of the rotating shaft. Based on the calculated current average rotation radius, control is performed such that the speed of movement of the wire electrode relative to the workpiece machining point agrees with a command speed acquired from a machining power supply.

Abstract: Aspects of the present invention relate to a rolling mill laying head. The rolling mill laying head comprises a quill rotatable about a central axis, said quill being equipped with a guide pathway configured and arranged to form a longitudinally moving product into a continuous series of rings; a stationary support structure; and axially spaced radial bearings supporting said quill for rotation about said axis, one of said bearings comprising a hydrostatic oil film bearing having an internal diameter of at least about 500 mm, and having a L/D ratio less than 0.25.

Abstract: Selectively replaceable wear elements for rolling mill laying heads. One replaceable wear element forms the end ring guide surface and is installed within the end ring inner diameter without removing the guide ring from the laying head. A plurality of wear element bodies may be installed about one or more portions of the end ring guide surface inner diameter. Size, configuration and material properties of the end ring guide surface wear element bodies may vary for different sections within the ring guide inner diameter. Another replaceable wear element is a tripper paddle that forms a laying head tripper mechanism guide surface. The tripper paddle and guide surface wear element bodies are replaceable external the end ring without removing the end ring or tripper mechanism from the laying head. Either or both types of wear element may be used in a laying head.

Abstract: A rolling mill coil-forming laying head apparatus includes a driven rotating quill that discharges elongated material into an elongated path hollow structure, such as a laying head pipe and a downstream deflector guide trough. The path and deflector guide trough structures are supported by a unistructural permanently-formed housing having integral elongated hollow pathway structure, deflector guide trough, and quill mounting support extensions formed therein.

Abstract: A coil laying head comprising a rotor (14) having two or more conduits (1?), a selector tube (5) coaxially arranged with respect to the rotor (14) to guide a rolled product into one of the conduits (1?), a main control, connecting means between the main control and the rotor (14) for setting in rotation the rotor (14), a phase shifter system ((6,7,8,8?,9,10,11), including two nonmoving components ((10,),(11,)), an input component (7) connected to the main control, an output component (6) connected to the selector tube (5), a first group of side pinions (8?) meshed on the input component and on one of the nonmoving components and a second group of side pinions (8) meshing on the output component and on the other nonmoving components, connection means (9) connecting the first group of side pinions with the second group of side pinions to drive this latter in rotation according to the axis (X), angular phase shift adjustment device (12,) between the first and the second nonmoving component.

Abstract: A laying head for the production of coils in hot rolling mills comprises a central body provided with a central cylinder and at least a shaped feed pipe, attached to the central body by means of clamping elements and bolts, and at least a circumferential guide disposed on the periphery of the cylindrical element. The circumferential guide consists of a plurality of elementary segments.

Abstract: A rolling mill coil-forming apparatus includes a rotating quill that supports an elongated path hollow structure, such as a laying head pipe, for receiving elongated material after it has been rolled. The elongated structure is constructed of combinations of ferrous and non-ferrous dissimilar materials. Elongated path hollow structures are formed from adjoining, abutting segments, and can be constructed in any three dimensional compound curve shape that can replicate the smooth, continuous curve elongated material transport path of known laying pipes, or any other desired path. A pathway structure segment or plurality of segments may be constructed of a homogeneous material, or alternatively, different materials may be spliced or otherwise joined to form the composite, complete elongated path hollow structure. The adjoining segment portions may be nested within or circumscribe another pathway structure layer.

Abstract: A rolling mill coil-forming apparatus includes a rotating quill that supports an elongated path hollow structure, such as a laying head pipe, for receiving elongated material after it has been rolled. Any portion of the elongated path/pipe structure, including the entire structure is formed by a laser sintering (LS) process. Coil-forming apparatus elongated path/pipe components formed by a laser sintering process can be constructed in any three dimensional compound curve shape that can replicate the smooth, continuous curve elongated material transport path of known laying pipes, or any other desired path. Laser sintering path component fabrication processes facilitate construction of asymmetrical structures that cannot be readily fabricated with bent symmetrical wall pipe, tubing or other conduits.

Abstract: A rolling mill coil-forming apparatus includes a rotating quill that discharges elongated material into an elongated path hollow structure, such as a laying head pipe. The elongated structure is constructed of combinations of ferrous and non-ferrous dissimilar materials. Generally, non-ferrous materials are used in zones that are subject to relatively higher wear. A portion of the elongated path structure can be formed from nested, enveloping layers and/or by joining segments in axial abutting relationship. Components formed from nested layers can be constructed in many three dimensional compound curve shapes that can replicate the smooth, continuous curve elongated material transport path laying head pipes, with localized symmetrical or asymmetrical cross sections.

Abstract: A rolling mill coil-forming apparatus includes a rotating quill that supports an elongated path hollow structure, such as a laying head pipe, for receiving elongated material after it has been rolled. A portion of the elongated structure or the entire structure is formed from nested, enveloping layers by inserting layers of pipe or other elongated hollow structure into each other. Elongated path hollow structures formed from nested layers can be constructed in any three dimensional compound curve shape that can replicate the smooth, continuous curve elongated material transport path of known laying pipes, or any other desired path.

Abstract: A laying pipe configured for rotation about its axis in a rolling mill laying head, comprises a ferrous outer tube having an entry section aligned with its axis, an intermediate section curving away from its axis, and a delivery section having a constant radius measured from its axis. A ferrous inner tube has entry, intermediate and delivery sections respectively lining the entry, intermediate and delivery sections of the outer tube. The inner tube is constrained against movement relative to the outer tube solely by frictional contact with the outer tube. The inner tube is movable incrementally within the outer tube in one direction in response to heating and cooling cycles during rotation of the laying pipe about its axis.

Abstract: A laying pipe for use in the laying head of a rolling mill is configured for rotation about an axis, with an entry end aligned on that axis to receive a hot rolled product, and with a curved section leading to a delivery end spaced radially from that axis. The curved section defines a guide path configured to form the hot rolled product into a helical formation of rings. The laying pipe comprises a tubular ferrous wall having an interior surface comprising a wear resistant boronized layer against which the hot rolled product is confined for movement along the guide path.

Abstract: A laying reel for coiling wire has a generally spiral laying tube generally centered on and rotatable about an axis and having offset from the axis a tangentially directed output end. The wire to be coiled extends through the tube and exits the output end thereof. A brake shoe at the output end is engageable with the wire extending therefrom. An actuator urges the brake shoe against the wire and thereby brakes the wire as it exits the output end.

Abstract: A rolling mill laying head comprises a quill rotatable about a central axis. A guide pipe carried by the quill and is configured and arranged to form a longitudinally moving product into a continuous series of rings. Axially spaced bearings support the quill on a stationary support structure for rotation about its axis. At least one of the bearings comprises a hydrostatic oil film bearing.

Abstract: A method is disclosed for controlling the speed of a curved rotatably driven laying pipe through which a longitudinally moving product is directed to exit from the delivery end of the pipe as a helical formation of rings. The method comprises determining the maximum and minimum internal radii Rmax, Rmin of the pipe at the location of the maximum radius R of the pipe as measured from its rotational axis; continuously measuring the velocity Vp of the product entering the laying pipe; and, controlling the rotational speed of the laying pipe such that the rotational velocities Vmax, Vmin of the pipe at said maximum and minimum internal radii bracket a range containing the velocity Vp of the product.

Abstract: A laying head, for forming coils starting from continuous rolled products such as round bars or wire rods (10) comprising a rotating member (3) with an axis (X), rotationally fixed to the supporting structure (30) by means of bearings (4, 5). The end of the rotating member (3) is a bell-shaped element (6) on the surface of which are a series of grooves (18) that guide the rolled product (10), said grooves having the form of a spiral and being open towards the outside. The laying head (1) comprises a fixed containing and protecting bell element (15) enclosing a portion of the rotating bell element (6) and having a shape that is complementary thereto.

Abstract: A laying head for forming coils using continuous and substantially rectilinear rolled products such as rods or wire, having vibration damping means integrated in one of two rotor supports (3), preferably the one on the rolled product outlet side. Said means comprise a plurality of coils (6, 6?, 6?) arranged around the rotor (3), rotating about its axis (X), which generate a magnetic field actively controlled by a computer, the resultant force of which is perpendicular to the axis (X) and of a predetermined intensity so as to eliminate the inertial forces generated by the mass imbalances. Alternatively, the damping means incorporated in one of the supports are comprised of oil film bearings.

Abstract: A method is disclosed for controlling the speed of a curved rotatably driven laying pipe through which a longitudinally moving product is directed to exit from the delivery end of the pipe as a helical formation of rings. The method comprises determining the maximum and minimum internal radii Rmax, Rmin of the pipe at the location of the maximum radius R of the pipe as measured from its rotational axis; continuously measuring the velocity Vp of the product entering the laying pipe; and, controlling the rotational speed of the laying pipe such that the rotational velocities Vmax, Vmin of the pipe at said maximum and minimum internal radii bracket a range containing the velocity Vp of the product.

Abstract: A spiral winder is disclosed adapted to implement a new method for spirally winding a product of indefinite length, such as pipe, into a coil for packaging and/or transport to an end user. The spiral winder consists primarily of a rotor assembly (1) supporting a caster (7) such that product fed along the rotary axis to the caster (7) as the rotor (1) rotates is guided to the outlet from the caster to be deposited onto a pallet in the form of a planar spiral. By vertically indexing the pallet and reversing a radial motion of the caster outlet layers of planar spirals can be produced as a self supporting coil without the necessity of any internal mandrel or external retaining drum. By careful control of the stresses in the product as it passes to and from the caster (7) fragile product such as thin walled heat exchanger pipe can be coiled rapidly.

Abstract: In a laying head for forming a longitudinally moving hot rolled product into a helix, a tubular quill has a central axis of rotation and a through passageway extending along the central axis from a first end to an opposite second end of the quill. The interior quill surface has a cylindrical section leading from the first end of the passageway to a radially outwardly flared section which in turn leads to the second end of the passageway. A laying pipe is received in the through passageway. The laying pipe has an entry end aligned with the central axis at the first end of the passageway, a curved intermediate portion surrounded by the flared section of the interior quill surface, and an end portion projecting axially from the second end of the passageway to a delivery end spaced radially from the central axis.

Abstract: A laying has a quill rotatable about an axis, and a pipe carried on the quill. The pipe has an entry end arranged to receive a product, and an intermediate portion defining a curved guide path leading from the entry and to a delivery end spaced radially from the quill axis and from which the product is discharged as a helical series of rings. A guide defines a helical extension of the guide path, and comprises a helical support plate projecting outwardly from the quill. A plurality of channel-shaped guide sections supported end to end on the support plate. The guide sections form a segmented radially outwardly facing helical trough surrounded by a cylindrical shroud that cooperates with the guide sections to definee radially and axially confined helical extension of the guide path.

Abstract: A spiral winder is disclosed adapted to implement a new method for spirally winding a product of indefinite length, such as pipe, into a coil for packaging and/or transport to an end user. The spiral winder consists primarily of a rotor assembly (1) supporting a caster (7) such that product fed along the rotary axis to the caster (7) as the rotor (1) rotates is guided to the outlet from the caster to be deposited onto a pallet in the form of a planar spiral. By vertically indexing the pallet and reversing a radial motion of the caster outlet layers of planar spirals can be produced as a self supporting coil without the necessity of any internal mandrel or external retaining drum. By careful control of the stresses in the product as it passes to and from the caster (7) fragile product such as thin walled heat exchanger pipe can be coiled rapidly.

Abstract: The invention relates to a method for inserting weft yarn material, comprising an insertion system in a loom. According to the invention, for every insertion the insertion system (A) is supplied with a substantial part of the weft yarn required for the insertion in a loose and substantially tension-free manner so as to be intermittently pulled off. A tubular package of adjacent windings is produced from the weft yarn material on an inner mechanical support (S) by way of an at least substantially continuous winding process and is conveyed forward in withdrawal direction. For an insertion, a number of windings that corresponds at least approximately to the weft yarn section intended to be inserted is detached or set free from the support while maintaining its tubular configuration without yarn tension. The weft yarn material is withdrawn directly inwardly from the frontmost winding and then further along the tube axis (X).

Abstract: A laying has a quill rotatable about an axis, and a pipe carried on the quill. The pipe has an entry end arranged to receive a product, and an intermediate portion defining a curved guide path leading from the entry and to a delivery end spaced radially from the quill axis and from which the product is discharged as a helical series of rings. A guide defines a helical extension of the guide path, and comprises a helical support plate projecting outwardly from the quill. A plurality of channel-shaped guide sections supported end to end on the support plate. The guide sections form a segmented radially outwardly facing helical trough surrounded by a cylindrical shroud that cooperates with the guide sections to definee radially and axially confined helical extension of the guide path.

Abstract: A coil-laying device has a body having a generally cylindrical outer surface centered on and rotatable about an axis and wall structure forming on the surface a radially outwardly open groove having an intake end, a center, and an output end. The groove has an axial dimension that decreases from the intake end to the center and that increases from the center to the output end. The groove has an angular dimension of about 360° and the center is located about 250° from the output end, so that the center is spaced between 0° and 110° from the intake end. Furthermore the groove is defined between walls that taper together between the intake end and the center at a predetermined angle and that diverge from the center to the output end at a larger angle.

Abstract: A laying head for a rapidly movable wire rod and including a carrying sleeve located in the support housing of the laying head for receiving a wire entrance section of a laying pipe and supported by two, spaced from each other bearings, a pipe holder projecting past an end surface of the carrying sleeve remote from a carrying sleeve section that receives the wire entrance section of the laying pipe for supporting a wire laying section of the laying pipe; and a pressing device located in the support housing for applying a radial pressure to a section of the carrying sleeve located between the two bearings.

Abstract: A coil-laying device has a body having a generally cylindrical outer surface centered on and rotatable about an axis and wall structure forming on the surface a radially outwardly open groove having an intake end, a center, and an output end. The groove has an axial dimension that decreases from the intake end to the center and that increases from the center to the output end. The groove has an angular dimension of about 360° and the center is located about 250° from the output end, so that the center is spaced between 0° and 110° from the intake end. Furthermore the groove is defined between walls that taper together between the intake end and the center at a predetermined angle and that diverge from the center to the output end at a larger angle.

Abstract: A laying head for a rapidly movable wire rod and including a carrying sleeve located in the support housing of the laying head for receiving a wire entrance section of a laying pipe and supported by two, spaced from each other bearings, a pipe holder projecting past an end surface of the carrying sleeve remote from a carrying sleeve section that receives the wire entrance section of the laying pipe for supporting a wire laying section of the laying pipe; and a pressing device located in the support housing for applying a radial pressure to a section of the carrying sleeve located between the two bearings.

Abstract: A laying apparatus for forming rings of a rod-shaped rolled strand has at least part of the cantilevered portion of the lying apparatus cantilevered from the main bearing composed of a material lighter than steel to reduce gravitational sag and increase the resonant frequency, thereby increasing the speed of the strand.

Abstract: A coil-laying head for a wire-coiling apparatus has a tubular body centered on and rotatable about an axis, a generally spiral guide tube having an inlet end at the axis and an outlet end opening generally tangentially of the axis at a radial spacing from the axis, and a helicoidal mounting plate having an inner edge fixed to the body and an outer edge secured to the tube. A helicoidal counterweight plate is fixed to the tubular body diametrally opposite the mounting plate and has radial and axial dimensions, at least one of which varies such that any section of the counterweight plate counterbalances a corresponding diametrally opposite section of the guide tube and mounting plate. The counterweight plate has a resonant frequency and the body has a nominal maximum rotation speed that is less than the resonant frequency.

Abstract: An apparatus for coiling a continuously arriving wire has a main support rotatable about an axis and having mounting formations and a head carried on the support and having mounting formations engaging the support mounting formations. A guide tube is fixed on the head and has an intake end aligned with the axis and closely juxtaposed with the main support and an outlet end axially spaced from the intake end and opening tangentially offset from the axis. A releasable fastener engaged between the support and the head presses the head mounting formations against the support mounting formations.

Abstract: A method and a device for placing wire windings onto a conveyor belt, particularly onto a Stelmor conveyor belt, wherein the wire windings are placed on the conveyor belt in an actual position relative to the belt middle. The wire windings are placed on the conveyor belt in a position-controlled manner relative to the belt middle. The device for carrying out the method includes a sensor for determining the actual position of the wire windings on the conveyor belt and a control unit, - wherein an actual position and a nominal position are supplied to the control unit and the control unit determines from the difference between the actual position and the nominal position a control signal for the control element and supplies this signal to the control element.

Abstract: A laying tube for producing wire windings from continuously introduced essentially straight wire material includes a first portion of an outer casing which is driven so as to rotate and receives a feeding tube for the wire material. Connected to the first portion is an outwardly expanding portion of the outer casing which includes a curved wire guide channel, wherein this guide channel is provided in the form of a groove in the outer surface of a hollow insert which is placed with fit in the expanding portion of the outer casing, and wherein the centrifugal forces of the wire are absorbed by the inner surface of the outer casing. The feeding tube and the insert form a structural unit which is releasably connected to the outer casing.

Abstract: A device for forming loops from a wire strand emerging from a wire rolling train using a rotating looper, wherein the device includes a conveyor onto which the loops are placed while the conveyor is moving, wherein a driving unit, a looper and a roller conveyor, a chain conveyor or the like, are arranged following the wire rolling train and wherein the driving unit and possibly also the looper are arranged inclined relative to the horizontal. The driving unit and the looper are arranged at a fixed predetermined angle of inclination relative to the horizontal, while the conveyor on which the loops are placed is constructed so that its angle is adjustable relative to the horizontal.

Abstract: A coiler in wire rolling trains includes a laying pipe support supporting a laying pipe, wherein the laying pipe support includes a support disk holding the wire insertion pipe member. The support disk is coupled for rotation with a rotating insertion sleeve for this pipe member, wherein the insertion sleeve supplies the wire, and wherein the support disk is connected coaxially with a cantilever projection which receives the laying arm portion of the laying pipe. The coiler includes a cylindrical or truncated cone-shaped surrounding body extending around the laying pipe support at a radial distance, wherein an end opening facing the insertion sleeve is releasably and attachably connected to the support disk of the laying pipe support, and wherein air passage openings are arranged in the wall of the surrounding body.

Abstract: Wires are coiled by rotating about a main axis a curved laying tube having an upstream end opening generally at the axis and directed axially upstream and a downstream end opening radially offset from the axis and directed generally tangentially and feeding a leading end of the wire into the tube upstream end so that the wire issues from the downstream end of the tube in a curved condition and is laid in a succession of turns on a surface below the downstream end. Passage of a trailing end of the wire through the laying tube is detected and a drum having an inner surface directed toward and centered on the axis at the tube downstream end is closed around the downstream end of the tube to confine the wire inside the drum as passage of the trailing end through the laying tube is detected. The drum is opened from around the downstream end of the tube after passage of the trailing end through the tube and the drum is held open until detection of passage of another trailing end through the tube.

Abstract: An assembly for storing a line in a coil in a storage room with a bottom and walls, as well as a central, upper opening to guide the line while it is being lead into or out of the storage room. The assembly comprising a central, round pole extending upward from the bottom of the room toward the central opening, and a guiding head mounted on top of the pole. The guiding head is shaped with such lateral dimensions in relation to the axis of the pole that the horizontal dimension is larger that the central opening. When the line is introduced to the storage room through the central opening, the line usually hits the head and is deflected so as to form the coil.

Abstract: A lined spiral-forming pipe (11) for a spiral-forming head of spiralling machines for metallic wire, comprising a plurality of wear-resistant inserts having an inner hollow through which the metallic wire passes and an outer surface connecting with the inner surface of the spiral-forming pipe (11) and an inner through hollow (12). The wear-resistant inserts (10) are substantially all alike with a substantially annular conformation with a longitudinal dimension ("1") mating with the minimum radius of curvature of the spiral-forming pipe (11), and have rounded front faces (10a) at least partly convex. The inner through hollow (12) comprises a first lead-in segment (12a) to introduce the metallic wire and a second following segment (12b) which is substantially cylindrical. Also included is a method to recondition a spiral-forming pipe (11) of a spiral-forming head in spiralling machines for metallic wire.

Abstract: A sawing device comprises a layer of parallel wires (8) which move with reciprocal or continuous movement whilst bearing against a member (9) to be sawed fixed to a support table (10). The wire comes from a management region (41a) of the wire, constituted by two spools of wire, one (2a) a payout spool and the other (14a) a take-up spool, which do not rotate, but which have a revolving spooling and unspooling member (42) about the spools permitting rendering the sawing device independent of the mass of the spools of wire (2a, 14a) and hence of the length of the wire.

Abstract: A rolling mill laying head as a quill supported for rotation about its longitudinal axis between axially spaced first and second bearing assemblies. A laying pipe is carried by the quill for rotation therewith. The laying pipe has an entry section lying on the quill axis between the first and second bearing assemblies, and a three dimensionally curved intermediate section extending through and beyond the second bearing assembly to terminate at a delivery end spaced radially from the quill axis to define a circular path of travel. The dimension by which the laying pipe extends beyond the second bearing assembly is less than the diameter of the circular path.

Abstract: A wire electric discharge machine including a wire electrode collecting device for collecting a wire electrode previously used for electric discharge machining, and a guide for guiding the previously used wire electrode to the wire electrode collecting device. The guide and/or the collecting device is movable so that the guide is movable relative to the collecting device in at least two different directions. In one embodiment, the wire collecting device is vibrated.

Abstract: An apparatus and method are provided for forming coils of yarn and for heat setting the yarn. The apparatus has a coiler adapted to receive yarn from a yarn source and to form the yarn into a plurality of overlapping loops of a desired size. The coiler preferably includes a supporting frame, a pair of feed rolls mounted on the supporting frame and adapted for feeding yarn from a yarn source, and a rotatable coiler tube positioned downstream from and cooperating with the feed rolls. The coiler also includes a first variable speed drive connected to the pair of feed rolls and adapted for rotating the same at a predetermined speed and a second variable speed drive connected to the coiler tube and adapted for rotating the same at a speed to thereby form loops of yarn of a desired size. The apparatus further has a conveyor positioned below the rotatable coiler tube for receiving overlapping loops of yarn thereon.

Abstract: A welding wire dispenser for use on a spool of welding wire comprising a base which is removably secured to the top plate of the spool. A let-off arm is rotatably mounted on the base and has a guide tube mounted thereon through which the welding wire extends. A brake is provided on the base and is associated with a coil spring to tension or compress the same as the welder or wire feeder pulls the wire from the spool of wire. When the welder or wire feeder discontinues its pulling action on the wire, the tension in the spring exerts sufficient force on the wire extending from the spool to prevent the wire from shingleing.