Method for manufacture of multi-cored wound springs

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

 

The invention relates to the manufacture of stranded springs in mechanical engineering from a wire.

A known method of manufacturing a stranded springs in U.S. Pat. RU # 2186652 S1, which includes the twisting and stretching of the wire, the strand of wire and winding it on a mandrel in a single operation with a simultaneous twisting and stretching of the wire. Wound the spring of desired length is cut off and sent for welding lived, heat treatment, measurement, geometric and strength parameters, applying a protective coating. This method can improve the performance of manufacturing springs for how separate [6] the manufacture of wire and winding it on a mandrel.

However, manufactured in ways stranded springs when working in high temperatures lose altitude and power settings, despite senegalian compression springs force the maximum deformation of F3on 6÷48 hours

The technical result, which is aimed invention is to provide a method allowing to make springs high strength with accurate and stable over time elastic characteristics when the springs at high temperatures.

The technical result is achieved due to the new operations of the technological process and their new follower of the spine, namely, the invention consists in that the method of manufacture of springs comprising a strand of wire rope and winding it on a mandrel with a simultaneous twisting and stretching wire in one operation, springs segment of a given length, welding lived, heat treatment, measurement of geometric and strength parameters and the protective coating, characterized in that use sanded or patented wire and produce high-temperature thermomechanical treatment before the strand of rope and wrapped it on the mandrel. After heat treatment to produce the pressing spring axial load in excess of F3up to 300F3providing the minimum allowable draught of spring in the product. Produce a re-pressing load is increased in proportion to the ratio of the desired precipitation to precipitate from the app first loads [2]. Loads can be applied vibration [3].

It is known that the existing methods of manufacture springs with the use of high-temperature thermomechanical treatment significantly increase their resistance to high temperatures [7], and pressing increases the resistance of the springs when working with the contact of coils [6].

The method is as follows. Produce high-temperature thermomechanical processing sanded or Pat tirovannoj wire, then in the device [4] install the charged wire coils on the number of veins springs, fix the ends of the wires (conductors) to the mandrel for winding the spring. Include the device, through which winding the spring of a given length. Coiled spring cut, produce welding all lived and heat treatment. Produce a pressing spring axial load in excess of F3up to 300F3. Produce a re-pressing load is increased in proportion to the ratio of the desired precipitation to precipitate from the app first loads. Loads can be applied vibration. When the desired height of the spring re-pressing is not required. Measure geometric and strength parameters of the spring and cause the protective coating, produce preservation and packaging.

When implementing the proposed method of manufacturing a multi-strand coil springs increases their resistance to high temperatures and contact turns.

To effect the winding of the spring, you can use the Device for manufacturing a stranded coil springs" Pat. RU # 2210455 C1 [4]; to compress the spring, you can use the Device to contact samevolume springs" Pat. RU # 2251036 C1 [5]. Their work is represented in the above patents.

Note: under heat treated spring implies is by hardening with subsequent tempering in accordance with the procedures, accepted for a certain brand of spring steel. For patented wire is usually used only vacation [7].

Reference materials

1. Patent RU No. 2186652 C1, MCL B21F 35/00, 7/00, 01.08.2001.

2. A.S. The USSR 554915, MCL B21F 35/00, 10.07.1975.

3. A.S. USSR 580474, MCL G01M 13/00, B21F 35/00, 19.07.1976.

4. Patent RU No. 2210455 C1, MCL B21F 35/00, 29.07.2002.

5. Patent RU No. 2251036 C1, MCL F16F 1/04, B21F 35/00 / 14.10.2003.

6. Zemljanushnov POSTGRADUATE, Tabanco, Y.M. improving the quality of the springs. Stavropol: Sevkat, 2001, 93 S.

7. Ruhstadt A.G. spring steel and alloys. M.: metallurgy, 1982, 400 S.

1. A method of manufacturing a multi-strand coil springs, comprising a strand of wire rope and winding it on a mandrel with a simultaneous twisting and stretching wire in one operation, springs segment of the desired length, welding lived, heat treatment, measurement of geometric and strength parameters and the protective coating, characterized in that use sanded or patented wire and produce high-temperature thermomechanical treatment before the strand of rope and wrapped it on the mandrel to increase the resistance of the springs and reduce altitude deviations.

2. The method according to claim 1, characterized in that after heat treatment to produce the pressing springs axial load in excess of F3up to 300F3where F3- spring force at maximum deformation

3. The method according to claim 2, characterized in that re-produce the pressing load is increased in proportion to the ratio of the desired precipitation to precipitate from the app first loads.

4. The method according to claim 2 or 3, characterized in that the load applied vibration.



 

Same patents:

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

The invention relates to the field of out-of-furnace treatment of liquid steel by the introduction of its refining and alloying additives, more precisely to a method of manufacturing a filler wire
The invention relates to the manufacture of wire mesh used in land reclamation and road construction, in particular for twisting two adjacent wires

FIELD: technological processes.

SUBSTANCE: method includes cable twisting and its coiling onto holder with simultaneous kinking and stretching of wire at the same operation, cutting of spring with specified length, welding of cores, thermal treatment, measurement of geometric and power parameters and application of protective coating. In order to achieve springs resistance and reduce deviations in height, after thermal treatment spring is pressed by axial load that exceeds F3 within the limits up to 300F3, where F3 is spring force at maximum deformation. If required, repeated pressing is done by load increased proportionally to ratio of required yield to yield from application of the first load. At that loads may be vibrational.

EFFECT: higher dynamic strength, with accurate and time-stable elastic properties in process of their operation with contact of turns.

3 cl

FIELD: technological processes.

SUBSTANCE: method includes coiling of spring from polished or patented wire with pitch that exceeds pitch of finished spring, thermal treatment, shotcasting riveting and spring pressing by means of its yield by axial load of (10÷300) F3 value, where F3 is spring force at maximum deformation. At that high-temperature thermomechanical treatment of wire is carried out prior to spring coiling.

EFFECT: spring operational properties are improved.

5 cl

FIELD: technological processes.

SUBSTANCE: method includes coiling of spring from polished or strengthened wire with pitch that exceeds pitch of finished spring, thermal treatment, shotcasting riveting, thermosetting or hardening. Afterwards or simultaneously with thermosetting, spring plastic strengthening is carried out by its compression by axial load, which makes (10÷300)F3, where F3 is spring force at its maximum deformation. Prior to spring coiling, high-temperature or low-temperature thermomechanical strengthening of wire is carried out, and spring compression by axial load is done in process of its heating up to tempering or quenching temperature.

EFFECT: improved operational properties of spring.

4 cl

FIELD: technological processes.

SUBSTANCE: bar is heated up to the temperature that provides homogenisation of steel high-temperature phase. Then spring is wound from bar at its heating temperature. At that spring is subjected to turn-by-turn tempering. Tempering of every turn is carried out after its winding and after-winding ageing in time sufficient for steel polygonisation for complication of recrystallisation rearranging of its structure. Final thermal treatment of spring is carried out by means of its tempering.

EFFECT: higher strength and operational durability of produced spring.

FIELD: manufacturing and testing of spring, possible usage in industrial branches, manufacturing and using springs: mechanical engineering, aviation engineering, automobile engineering, tool-making industry, etc.

SUBSTANCE: device for contact predeformation of springs contains lower immobile plate and lower moving plate, mounted on which with possible re-mounting along outer diameter of spring are guiding supports for same. Spring is positioned between lower and upper inserts, on end surfaces of which screw surfaces are made, repeating profile of edge coils of spring. Inserts have stops, lower insert being positioned on lower moving plate between re-mountable guiding supports, and spring being mounted so that it is in contact by edge coils with screw surfaces of inserts and abuts by end of edge coils against stops of inserts. Upper insert is made with ball surface, interacting with ball surface of puncheon, held on lower immobile plate are guiding bars and stops, limiting edge positions of lower moving plate, which is provided with mechanism for its movement into working zone under the puncheon and backwards.

EFFECT: increased labor productivity during predeformation of springs and during adjustment of device for predeformation of springs with different sizes.

4 dwg

FIELD: manufacture of jewelry articles, possibly manufacture of gold-alloy small springs of locks of snap hooks in jewelry industry.

SUBSTANCE: method comprises steps of winding from wire prepared by deforming alloy at several stage with intermediate annealing between said stages small spring; at last stage deforming alloy by drawing at total reduction degree exceeding 85% but less than 95%. Preferably drawing of wire is started from initial diameter of wire din = 1mm till final diameter df = 0.35 mm for 13 passes at total reduction degree 87.3%. Spring is made of gold alloy with purity 385.

EFFECT: enhanced elastic properties of spring, improved manufacturing process for realizing the method.

3 cl, 1 ex

FIELD: manufacture of helical compression springs operating at impingement of their turns in condition of elevated temperatures.

SUBSTANCE: after coiling spring with pitch exceeding pitch of ready spring, the last is subjected to heat treatment and shot-blast hardening. Then spring is compressed by action of axial load consisting of 10 - 300 F3 where F3 - spring force at maximum deformation. It is possible to perform secondary compression of spring by action of load increased in proportion to relation of target camber to camber value caused by first load. Spring may be subjected to action of vibration loads. In order to satisfy high demands made to force parameters of spring the last is dressed after twisting and ends of spring are ground and chamfered.

EFFECT: possibility for making springs with accurate and stable in time elastic characteristics.

4 cl

FIELD: manufacture of helical compression springs operating at impingement of their turns in condition of elevated temperatures.

SUBSTANCE: after coiling spring with pitch more than that of ready spring, the last is subjected to heat treatment and shot-blast hardening. After thermal compression and scragging spring or simultaneously with said operations, turns of spring are subjected to plastic strengthening. In order to realize it, spring is compressed by action of load consisting of 10 - 300 F3 where F3 - spring force at maximum deformation.

EFFECT: possibility for making springs with improved dynamic strength and with accurate stable in time elastic characteristics.

4 cl

FIELD: manufacture of jewelry articles, possibly in jewelry industry at making small springs of rod type locks of gold alloys.

SUBSTANCE: method comprises steps of forming wire of gold alloy by deforming during several stages at intermediate annealing procedures between said stages; at last stage of wire forming deforming alloy by drawing it at total reduction degree 65 - 85%; then winding spring of formed wire. In preferable variant of invention last stage of drawing is realized during eight passes at total reduction degree 77.8%. The most effective method of forming springs is realized at using gold of purity degree 585.

EFFECT: enhanced manufacturing effectiveness, improved quality of articles due to their enhanced elastic properties.

3 cl, 1 ex

FIELD: making and testing springs.

SUBSTANCE: device comprises punch with ball surface, which is in a contact with the ball surface of the top insert, bottom insert mounted on the bottom unmovable plate, and screw surfaces with stop provided on both of the inserts. The screw surfaces copy the profile of the end turns of the spring. The bottom unmovable plate is provided with rectangular guiding supports, which are rearranged over the outer diameter of the spring. The rectangular guiding supports are secured to the bottom unmovable plate by means of radial T-shaped slots made in the plate.

EFFECT: simplified design.

2 dwg

FIELD: medical technique.

SUBSTANCE: apparatus includes base supporting guides and carriage mounted with possibility of motion along guides. Rotary platform is mounted on base behind horizontal guides of carriage. On one edge of platform there is opening in which vertical shaping pin is arranged. Said pin is secured to base. On other edge of platform there is indicator of platform rotation angle. Guiding tube is mounted between said edges and pressing spring if arranged in parallel relative to said tube with possibility of axial motion. Adjusting and pressing screws are mounted respectively at both ends of said spring. Carriage includes clamping mechanism and handle moving carriage on guides. Member for controlled limitation of horizontal motion of carriage is mounted on base between horizontal guides of carriage.

EFFECT: possibility for simplified forming of curvilinear profile of distal part of bowden.

1 dwg

FIELD: manufacture of springs, possibly for furniture, particularly manufacture of springy mattresses for soft furniture.

SUBSTANCE: method comprises steps of feeding round cross section wire; forming and binding knots on supporting turns due to twisting wire end under predetermined pressure around supporting turn; before forming spring blank, imparting to wire out-off-round cross section or making spring blank from wire having out-off-round cross section. When wire end portion is twisted around supporting turn in contact zone of twisted wire and wire of supporting turn recesses are formed on portions of supporting turn wire having positive deflection from out-off-roundness due to creation of pressure exceeding preset value. Twisted wire is pressed-in to said recesses.

EFFECT: enhanced strength of knots, increased useful time period of spring, operational reliability of articles.

2 cl

Up!