Wire winding unit for producing multi-core springs

FIELD: machine engineering.

SUBSTANCE: wire winding unit comprises a bushing that is rotatable about a symmetry axis provided with guides for passing wires from its accumulators and installed before a mandrel for spring winding. The guides are in the form of rods, which one end of each is rotatably disposed in an opening of a corresponding shoe, and the free ends of the rods are conjugated with a head provided with a first annular groove made in a plane perpendicular to the rod rotation axis. Each shoe is rigidly fixed on the inner surface of the bushing so that the rod rotation axis is oriented at a sharp angle to the end plane of the bushing and projected beyond it to the mandrel. There are additional guides installed in the bushing cavity and formed as additional rods. One end of each rod is rotatably mounted in the opening of the corresponding additional shoe, and its free end is provided with a head formed with a second annular groove perpendicular to the rod rotation axis.

EFFECT: increase in serviceability of the produced multi-core springs and stability of their parameters.

5 cl, 6 dwg



Same patents:

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and may be used for twisting bars into rope at lathes. Proposed method consists in drawing bars through decelerating assembly and guiding assembly, jointing them together, securing in fastening assembly and twisting. Note here that decelerating assembly and guiding assembly are mounted on lathe slide. Securing assembly is arranged in lathe chuck. Bars are twisted on revolving the chuck and slide feed equal to rope bar screw line pitch per one revolution of chuck. Device comprises bar decelerating assembly, guiding unit with bar drawing channels, joint assembly, bar securing and twisting assemblies. Said decelerating assembly, and guiding unit are equipped with means to mount them on lathe slide while bar securing unit allows its mounting in lathe chuck to make twisting assembly.

EFFECT: production of twisted rope at lathe with no modification of lathe.

5 cl, 1 dwg

FIELD: mechanical engineering.

SUBSTANCE: invention refers to mechanical engineering and can be used in helical compression springs manufacturing. The device contains driver for spring winding, mechanism for driver rotation, spooler having radially positioned on it reels with driving gears and spring-loaded reel with wire stock, and mechanism for spooler moving along driver. It holds hub for wire twisting into cable. The hub is mounted with possibility to move along driver. Fixed central gear is located on one axis with the spooler. Driving gears of reels are performed with possibility to rotate when being rolled around fixed central gear, and the spool is made rotatable by means of drive shaft with keyslot, gear set and actuator. The device is executed with inductor for heating wire passing through it. This inductor is located on spooler moving mechanism next to mentioned hub for wire twisting into cable.

EFFECT: technological capabilities are expanded and spring quality is improved.

2 cl, 5 dwg

FIELD: technological processes.

SUBSTANCE: method includes cable twisting from wire and its coiling onto mandrel with simultaneous kinking and stretching of wire in single operation, cutting of spring with specified length, welding of cores, thermal treatment, measurement of geometric and power parameters and application of protective coating. At that polished or patented wire is used, which is exposed to high-temperature thermomechanical treatment prior to cable twisting and winding on mandrel.

EFFECT: higher resistance of springs and reduction of its deviations in height.

4 cl

FIELD: packing equipment, particularly for strapping articles with binding material and for tightening wire binding and tensioning members.

SUBSTANCE: device has body, in which indicator, the first gear wheel, detachable finger and torque sensor are installed. Rod with stop is secured to body. Detachable finger may be installed in axial orifice of the first gear wheel perpendicular to gear wheel axis of rotation. The second gear wheel mounted on shaft and reducer are linked to drive through above orifice. Torque sensor is connected to drive and mounted on shaft. The first gear wheel includes the first removable toothed section. Finger ends may be installed in slots formed in side wall of above axial orifice or may be secured in toothed section and in slot formed in side wall of above axial orifice opposite to toothed section.

EFFECT: simplified device structure, reduced time of binding or tie members installation on item, increased reliability due to provision of optimal wire tensioning force applied to item.

5 cl, 4 dwg

The invention relates to metallurgical production, in particular to the manufacture of steel cord used for reinforcing tires, conveyor belts, high pressure hoses, and other rubber products, as well as ropes and cables

The invention relates to a device for the manufacture of twisted wires of two or more nutrient wires

The invention relates to the manufacture of stranded springs with given characteristics and is used in engineering and other technical fields

The invention relates to equipment for twisting wire and can be used in the manufacture of slings in the form of an annular wire harnesses

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and can be used in production of helical coil compression springs of steel. Proposed process comprises hardening of spring turn inner surface by surface cold-hardening. Along with the latter, crosswise flexure of spring turn is made in the pane perpendicular to spring axis. Surface cold-hardening is executed by hardening rolling by shaped rollers with working surface profiles made to allow the spring solid surface.

EFFECT: higher fatigue strength, longer life, lower noise, vibration and drawing force.

3 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and may be used for helical spring hardening. This process comprises spring winding, heat treatment, sand blasting, spring hardening by aging in compressed condition or its 3-5-fold contraction till contact between turns and cold-hardening. Spring winding is executed with pitch larger than that of finished spring, luminescence control is performed and heat-treated spring ends are finished. Cold-hardening is executed at final stage by stamping of the spring inner and outer surface by pushing contracted spring tightly fitted on male die through female die hole with diameter smaller than that of spring on male die.

EFFECT: stable resilience, higher efficiency of hardening.

2 cl, 1 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and may be used for producing large-sized springs by hot winding. This process comprises feed and heating of steel rod to be wound in inductor to preset temperature and quenching of the spring. Temperature is stabilized in thermostat over the rod length to wind the spring on spinning mandrel displacing axially. Spring is removed from the mandrel and dipped in quenching device at the rate that allows a stable structure and properties of the spring over its entire length. Invention covers two versions of the design of above described device.

EFFECT: accelerated quenching, higher quality of springs.

3 cl, 2 dwg

FIELD: mechanical engineering.

SUBSTANCE: high-speed heating of a rod up to a temperature above the Ac3 point of phase transformations, plastic deformation of the rod by screw compression with twisting in the direction of compression of the spring coil, instant hot coiling of the spring at a temperature above Ac3 with immediate coil quenching and tempering, ensuring anisotropically oriented steel structure is carried out.

EFFECT: improvement of quality of springs and reduction of energy consumption.

2 cl, 1 ex

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and can be sued for making helical springs for rolling stock. Proposed method comprises hearing of the bar, coiling the spring at heating temperature, quenching of the spring, its tempering and upsetting, grinding of spring ends, blasting and controlling of spring parameters. Spring parameters and those of production process are set. Prior to coiling, heated bar is reduced to spring end shape approximating to that of spring nonworking coils to roll said bar axially. Quenching is carried out using mechanical effects applied to ambient medium while spring parameters are controlled continuously at every production step by comparison with preset magnitudes and process parameters and corrected by appropriate program. Cyclic fatigue is controlled at arbitrarily selected springs prior to grinding their ends and after blasting. Invention covers also the device to implement abode described method. Stable performances of springs in production and correction.

EFFECT: higher quality.

2 cl, 1 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and may be used for producing springs by hot winding. Proposed method consists in using mandrel with outer surface layer made of metal that features lower heat conductance. This allows making the spring coil in tempering with metal martensite structure owing to eliminated heat removal from spring coil inner surface in contact with mandrel outer surface layer.

EFFECT: higher quality of springs.

2 cl, 2 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and may be used in production and application of springs at industrial enterprises. Proposed device comprises top and bottom inserts, barrel to accommodate said inserts and tested spring, and punch with spherical surface to get in contact with that of top insert. Bottom insert is fitted to rotate about barrel axis while top insert rotates and displaces relative to barrel axis and deflects from punch axis. Said inserts have circular grooves at their ends. Diameter of said grooves equals spring ID while groove depth makes, at least, spring turn height. Barrel ID varies from contracted spring diameter to coiled spring diameter. Top insert and punch are coupled by stepped screw with provision of clearance between screw body outer surface and that of holes in inserts and between screw head and insert mating surface.

EFFECT: higher efficiency of spring hardening.

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and may be used for making high-loaded helical springs subjected to both axial and radial forces. Proposed method comprises spring coiling, thermal treatment, preparing thrust coils, cold upsetting, and shot-blast cold-hardening of spring outer surface section. Length of said section makes one fourth of spring turn circumference to half the circumference. Preset spring outer surface section is subjected to ordered shot-blast cold-hardening.

EFFECT: higher fatigue resistance, quality and strength.

4 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and may be used in production of spring for car and railway car bogie suspensions. Proposed method comprises rejection of springs at initial step and heating the bars for spring winding at mandrel. Then spring being wound is subjected to continuous sequential quenching by dipping the mandrel with wound turn into quenching bath and holding it therein. Spring is tempered in furnace at preset temperature for preset time interval defined by steel grade and cooled down to 30-80C. Then, spring is squeezed, its operating parameters being controlled, and subjected to shot-blasting. Proposed production line comprises bar rejection device, integral technological module composed of bar heater, spring winder and spring continuous sequential quenching device, cooler, squeezer, sand-blasting unit and device to control spring performances, all being functionally and kinematically coupled.

EFFECT: stable characteristics and quality.

4 cl, 1 tbl, 1 dwg

FIELD: machine building.

SUBSTANCE: method involves supply of wire and its shaping by means of forming mechanism tools. The required nominal geometrical parameters of helical spring are specified. Actual position of the chosen element of helical spring structure relative to reference element is measured at least at one instant of time between beginning and end of helical spring production process in measurement zone that is located at final distance from forming mechanism as to length of helical spring. The above distance is shorter than total length of finished helical spring. The measured actual position of the structure element is compared by means of CNC programme to its nominal position for the specified instant of time in order to determine the current difference of positions, which represents difference between actual position and nominal position at instant of time when the measurement was made. Depending on difference of positions, control of tool (130) of step mechanism included in the forming mechanism is performed.

EFFECT: manufacture of a series of long helical springs with inconsiderable variation of total length.

15 cl, 6 dwg

FIELD: making springs.

SUBSTANCE: device comprises unmovable plate, race for receiving spring, punch with a ball surface which is in a contact with the ball surface of the top insert, bottom insert mounted on the bottom plate, and screw surfaces with a stop made on the both inserts, which copy the profile of the end turns of the spring. The bottom unmovable plate is provided with stops and L-shaped guiding planks which are in a contact with the answering projections of the race and mechanism for moving the race from the setting zone and hollow of the spring to the working zone under the punch and back.

EFFECT: enhanced convenience and safety.

2 dwg