Abstract: A coil spring forming apparatus including a core bar 2 which rotates around an axis thereof and on which a wire material W fed from a wire material-feeding means is wound; a clamping portion 22 which rotates integrally with the core bar 2 and grips an end of the wire material W on the core bar 2; and first guide rollers 30 and second guide rollers 40 for guiding the wire material W onto the core bar 2; wherein the first guide rollers 30 and the second guide rollers 40 are provided so as to move independently from each other in parallel with the axis of the core bar 2, and a coil spring formed by the above coil spring forming apparatus.

Abstract: An apparatus for producing inserts for steam generator tubes is provided. The apparatus is intended to allow a technically particularly simple production process, and consequently allow particularly high-speed production of inserts. For this purpose, the apparatus includes a winding head with a wire guiding pin, a guiding opening for a former shaft, provided with a number of spiral slots, and a pressure roller, the wire guiding pin, the guiding opening and the pressure roller being arranged in such a way that a tangent of the pressure roller and of a slot of the former shaft and the guiding axis of wire guiding pin substantially coincide.

Abstract: A coil spring forming apparatus including a core bar 2 which rotates around an axis thereof and on which a wire material W fed from a wire material-feeding means is wound; a clamping portion 22 which rotates integrally with the core bar 2 and grips an end of the wire material W on the core bar 2; and first guide rollers 30 and second guide rollers 40 for guiding the wire material W onto the core bar 2; wherein the first guide rollers 30 and the second guide rollers 40 are provided so as to move independently from each other in parallel with the axis of the core bar 2, and a coil spring formed by the above coil spring forming apparatus.

Abstract: A coil spring forming apparatus including a core bar 2 which rotates around an axis thereof and on which a wire material W fed from a wire material-feeding means is wound; a clamping portion 22 which rotates integrally with the core bar 2 and grips an end of the wire material W on the core bar 2; and first guide rollers 30 and second guide rollers 40 for guiding the wire material W onto the core bar 2; wherein the first guide rollers 30 and the second guide rollers 40 are provided so as to move independently from each other in parallel with the axis of the core bar 2, and a coil spring formed by the above coil spring forming apparatus.

Abstract: A coil spring forming machine for forming a coil spring having a dimensional characteristic, such as a coil diameter and a coil pitch, includes a frame, a control tool movably mounted on the frame, and a control mechanism mounted on the frame and coupled to the control tool. The control mechanism is operable to move the control tool to vary the dimensional characteristic. The control mechanism includes first and second cam surfaces and a cam follower assembly selectively engageable with either of the first and second cam surfaces to vary the dimensional characteristic depending on which cam surface is engaged.

Abstract: Methods and apparatus for forming devices including dead-ends and insulator ties from flat and other strips of material, as well as the devices themselves, are disclosed. Components of these devices may be formed continuously from a single strip, avoiding the need to weld or clamp the components together. Forming the devices in this manner reduces the possibility of stresses or non-uniformities forming when the components are joined and permits continuous automatic or semi-automatic manufacture to occur.

Abstract: A roll mandrel monitoring device in cold pilger mills with a coil which surrounds the rolled tube concentrically and is arranged on the delivery side after the rolling mill for detecting longitudinal movement of a coil core which is fastened inside the tube to a bar extending between the mandrel and coil coaxially to the tube. In order to achieve faster reaction times and accordingly to stop the rolling mill when the mandrel breaks, the bar is connected with the mandrel rod holding the mandrel so as to penetrate the mandrel concentrically and is constructed in the region of the mandrel as a tension bar which can be pretensioned against the end of the mandrel on the delivery side with the intermediary of an energy accumulator.

Abstract: A gear rolling machine includes a pair of gear rolling dies for finish forming teeth on external gear blanks. A force sensor is mounted to the machine to monitor the amount of force applied to the gear blank by the rolling dies as one rolling die is infed toward the other during the rolling process. The sensor is electronically connected to a controller that stops the infeed when a predetermined force level is attained during the rolling process.

Abstract: A wire coiling apparatus having a plurality of wire feeding spools, belts driving a wire coiling arbor, variable speed motors driving the belts and arbor, a lead screw moving the spools across the arbor feeding wire to be coiled on said arbor and a programmed computer coordinating the motors to determine the character of the coil produced.

Abstract: A coil-spring winding apparatus according to the present invention comprises a guide rail extending along the axis of a mandrel, and a carriage movably supported by the guide rail. The carriage is fitted with first and second guide rollers. The second guide roller, which is spaced from the first guide roller in the radial direction thereof, guides the coil forming a coil spring toward the first guide roller. The first guide roller is moved in the axial direction of the mandrel, at a speed determined by the rotating speed of the mandrel, so that the coil is wound at predetermined pitches. The second guide roller can pivot around a point near the point of contact between the first guide roller and the coil. The first guide roller is oriented always in the same direction as the second guide roller. The direction of these two guide rollers is changed by means of an actuator, depending on the pitch angle of the coil spring.

Abstract: Disclosed herein is an improved method and apparatus for making a coil spring wherein a wire material is fed on a line of feed which is maintained at a constant position relative to a mandrel adapted for winding the wire material. The mandrel is controlled to pivot into a predetermined angular winding position relative to the line of feed and to move in the axial direction thereof so as to form the wire material into a spring.

Abstract: A wire coiling machine for pattern forming resistance wire coils with controlled spacing of the turns, one of the two forming rolls being axially shiftable relative to the other by an actuator motor, the coiling rolls each having a surface configuration specially grooved to retain the coiling wire during axial shifting of the roll, but still allowing escape of the wire as it is formed into a coil.

Abstract: A compact multiple coil heat exchanger having a high heat transfer density is provided to include at least an inner coil formed from a continuous tube into a plurality of contiguous turns about a common axis in a spiral arrangement and having a pitch in one direction and an outer coil formed from the continuous tube into a plurality of overlapping turns concentrically about the inner coil in a spiral arrangement having an opposite pitch. Further, a coil-forming apparatus and continuous coil-forming method is directed to form a multiple coil heat exchanger from a continuous tube using a coil-forming die rotatably mounted on a support frame. The coil-forming die includes a continuous spiral thread constructed to receive and laterally support the continuous tube while fabricating the multiple coil heat exchanger according to the continuous coil-forming method of this invention.

Abstract: The method of forming helical springs and the installation for carrying same into effect relate to manufacture of springs and can be used with particular advantage for the purpose of forming helical springs by winding hot bars on a rotating mandrel.According to the invention, the winding of the bar on the mandrel is effected in the plane of the bar feed by pressing the bar against the mandrel over part of the circumference thereof for the purpose of forming spring coils. Each formed coil is relieved of the forming pressure and moved by a predetermined amount to the free end of the mandrel in order to set the coil pitch.The installation for carrying the method into effect comprises a plurality of sectors mounted equidistantly round the mandrel, the sectors being adapted for moving radially for applying a pressure force to the bar and for making a traversing movement along the mandrel in order to pass under a bar guiding arrangement and a pitch setting arrangement comprised in the installation.

Abstract: The method of forming helical springs and the installation for carrying same into effect relate to manufacture of springs and can be used with particular advantage for the purpose of forming helical springs by winding hot bars on a rotating mandrel.According to the invention, the winding of the bar on the mandrel is effected in the plane of the bar feed by pressing the bar against the mandrel over part of the circumference thereof for the purpose of forming spring coils. Each formed coil is relieved of the forming pressure and moved by a predetermined amount to the free end of the mandrel in order to set the coil pitch.The installation for carrying said method into effect comprises a plurality of sectors mounted equidistantly round the mandrel, said sectors being adapted for moving radially for applying a pressure force to the bar and for making a traversing movement along the mandrel in order to pass under a bar guiding arrangement and a pitch setting arrangement comprised in the installation.

Abstract: A coil spring manufacturing machine which is controlled by a micro-computer is described. Driving source of the coil spring manufacturing machine is a single motor. The power is divided into two independently controllable operation transmitting systems by a power dividing means. The one operation transmitting system transmits rotation to a mandrel assembly for winding a coil around a mandrel. The other operation transmitting system transmits a pitch movement to the mandrel assembly. Machining tools for the formation of coil spring legs are positioned around the mandrel assembly.

Abstract: A method and apparatus for making split lock washers consists of an automated machine wherein the diameter and gap of a lock washer can be accurately controlled. The apparatus includes a drive mechanism for driving the cutter and a transmission unit driven by the drive mechanism which can be adjusted to correlate the feed speed of the wire with the cutter to produce washers of different diameters. After the correlation speed has been set the production speed can be increased or decreased and the synchronized relation of the feed and cutter speeds will remain the same.

Abstract: A method of winding a metal wire around a reel structure is disclosed in which the wire is wound about a roller to give the wire a round habit of preselected diameter, at least one of the last few coils of said wire being strained so as to increase the diameter of the round habit, and all of the wire being wound on a reel structure whereby the at least one coil having the larger diameter round habit is coiled about the reel structure in an expanded condition with respect to the remainder of the coils. An apparatus for performing this method is also disclosed.

Abstract: A spring winder includes a base and a mandrel rotatably held against the base by a pair of mounting blocks which include aligned grooves in which the mandrel is seated. Each block is connected to the base by a pair of mounting screws which cooperate with associated compression springs for resiliently holding the mandrel between the mounting blocks and the base with a variable force. A length of spring wire is fed between a cam and washer rotatably mounted on the side of the base by means of an adjustment screw, the wire then being fed through an aperture in the adjacent end of the mandrel. The cam and washer are resiliently urged together by a compression spring for applying a drag to the wire which is variable by adjustment of the associated screw. A pin on the washer rides in a complementary groove in the cam for retaining the wire in position. As the mandrel is rotated the wire is wound thereon against the drag of the cam and washer to form a series of helical coils.

Abstract: The constructional parts have walls formed of elongated elements, such as res or tubes, wound spirally in juxtaposition about the axis of symmetry of the part and connected to each other. The elongated elements are bent to shape utilizing a bending device having at least one bending groove conformable to the predetermined three-dimensional geometry of the part to be manufactured. One end of each wire or tube is fixed to the bending device and the other end is engaged in a clamping and adjusting device designed as a combined Cardan swivel joint which, during the bending, it utilized to continuously control the adjustment parameters of the wire or tube, about three mutually intersecting axes, in conformity with such predetermined three-dimensional geometry of the part.

Abstract: An auger manufacturing apparatus comprising an adjustable former mechanism including a plurality of linearly adjustable die roller members and an associated moveable chuck assembly. A conveyor carries a metal ribbon to the adjustable former mechanism which bends the ribbon around a pipe. The pipe is supported in part by the chuck assembly which includes a rotatable ring with a ribbon holding mechanism and an adjustable pipe seat. The cylindrical pipe is mounted in the seat and the leading edge of incoming metal ribbon is securely held by said ribbon holding mechanism.

Abstract: A reinforced plastics material tubular rod has frusto-conical ends and a helical winding of constant angle over the tubular portion of the rod, but varying angle over the frusto-conical end portion of the rod. The winding is formed by apparatus havinglead screws for moving a winding head rectilineally during winding of the tubular portion of the rod and guiding means for coordinating longitudinal and rotational movement of the winding head during winding of the frusto-conical end portions of the rod.