A method of manufacturing a two-loop strap from the ring of the harness and device for its implementation

 

(57) Abstract:

The invention consists in that the production of two-loop sling of an annular bundle includes winding ring of the harness with a specified number of turns, twist the ends of the strands of material around the body harness, the deformation ring of the harness in the intermediate piece and the subsequent deformation of this figure in two-loop closed-loop helix. On the first transition ring harness is deformed in the shape of the type of a Crescent, and on the second transition of the internal part of this figure in the form of half rings rotate 180owhile the outer part of the product. In the device for manufacturing two-loop sling of an annular bundle containing installed on the frame mandrel associated with the drive matrix and bending rollers, guides and rod connected to the actuator mandrel made in the form of an articulated parallelogram, mounted in two opposite places, the matrix is in the form mounted on the movable frame flange, equidistant mandrel, made in the form of a horseshoe, comprising three pivotally connected parts, of which the middle part is rigidly connected through the Shoe with traction enclosed in direction is coupled to the Shoe, and in its middle part connected with the arm connected pivotally with the pipe, and traction is made with the possibility of axial movement and rotation together with the pipe, the pipe is kinematically connected to the actuator can be rotated around its axis, and the mandrel is made with a groove around the outer contour. 2 S. and 2 C.p. f-crystals, 10 ill.

The invention relates to a process and device for the manufacture of lifting elements and can be used in the production of sewn slings deformation ring harness drawn from a continuous thread rod.

A known method of manufacturing a prismatic springs, including pre-bending the wire around a mandrel, wherein the pre-formed blank is compressed along its longitudinal axis until it touches turns to each other, and then deform the core punches in the direction perpendicular to the longitudinal axis of the workpiece, with oncoming trough in the Central part.

Similar features are described analog and the proposed technical solution is the advanced flexible wire around a mandrel with gathering /compression/ turns to their contact and deformation of the profile is income is, what he does not perform the second transition inherent in the claimed technical solution aimed at getting the two-loop sling, turn the inner part of the pre-deformed turns at an angle of 180o. The lack of a second transition will not allow you to get two loops sewn slings in contrast to the claimed invention, which is directly aimed at the production of two-loop straps.

The known method of forming a needle-sling" by Eagle-strop /Finland/. Sling recruited from a separate two-loop rings, fastened in a harness. The sling is made of flexible material /wire/, the ends of which are fastened together by twisting. Forming a double loop manually before putting it on the package. Each wire ring coils "eight" and ring "g" are formed in a double ring.

Similar features are described analog and the proposed technical solution is the presence in both of the two ways of action this is a preliminary deformation of the ring in the intermediate piece and the subsequent deformation of this figure in two-loop spiral.

The disadvantage of this method is what the KTA springback double ring forces the sender of the packet to form a double loop just before putting it on the package, because without package double loop straightens in the original ring. The process of phasing out "eight" and its folding is repeated until the desired number of filaments in the bundle, collect the package, while in the present method, the formation of the two-loop sling is made from rings made in the form of a tow of continuous filament rod, thereby accelerating the process of formation of the closed two-loop spiral.

In addition, the difference of the proposed method from the analogue is that after preliminary deformation of the ring is obtained, the intermediate piece in the form of a Crescent, and not in the form of a figure eight, as the similar.

The closest in technical essence to the claimed is selected as a prototype manufacturing process of two-loop straps, including the wrapped ring harness from a given number of turns of wire rod, twist the ends of the threads of the rod around the body harness, folding, ring harness to the group and the folding of the rings "eight" in a double ring with subsequent fixation of soft wire received two-loop sling from possible springback double rings.

Similar signs ol the forming ring harness in the intermediate piece and the subsequent deformation of this figure in two-loop closed-loop helix. However, when the deformation ring harness on the method prototype intermediate piece is "eight", while when the deformation ring of the harness by the present method, the intermediate piece is "the Crescent".

The disadvantage of the prototype method is the presence of effect of springback double ring, forcing the manufacturer to perform the additional step of fixing soft wire received two-loop sling. When you implement as claimed method of manufacturing a two-loop sling effect of springback double ring is missing.

For the described analogs and prototypes common cause, prevent obtaining the required technical result is the impossibility of forming a closed two-loop spiral without subsequent occurrence of springback effect double rings.

The basis of the invention the task is to create a method of manufacturing a two-loop strap from the ring of the harness, whereby the formation of a closed two-loop helix would be without further effect of springback double ring, and to simplify the process of its manufacture.

Simplification of the fabrication process the CSO dvuhpotokovogo sling from springback double rings.

The problem is solved in that in the method of manufacturing a two-loop strap from the ring of the harness, including the winding ring of the harness with a specified number of turns, twist the ends of the strands of material around the body harness, the deformation ring of the harness in the intermediate piece and the subsequent deformation of this figure in two-loop closed-loop spiral, according to the invention on the first transition ring harness is deformed in the shape of the type of a Crescent, and on the second transition of the internal part of this figure in the form of half rings rotate 180owhile the outer part of the product.

These essential features of the claimed invention provide the technical result consists in the elimination of effect of springback double ring during the formation of the closed two-loop helix. It simplifies the process of manufacturing two-loop sling.

A device for manufacturing a ring of wire products containing fixed on the top plate of the punch the punch with dumper and wedges placed on the base with the possibility of radial movement by means of wedges matrix for forming the side of istenota by waste details type flanges with the side mounting holes, it has a toothed rack mounted on the top plate of the stamp placed on the base perpendicular to the axis of the punch spring loaded latches, catchers mounted on the base for rotation and are forming fingers are placed on their ends facing the punch and secured to opposite ends of the gear that interacts with the racks.

Similar features are described analog and the claimed invention are the presence of a bending tool punch mounted on the top plate, and forming fingers placed at the ends of the L-shaped catching rotatably, and a matrix that is installed with the possibility of radial movement for forming the lateral part of the product.

The difference is described analogue from the proposed technical solution is the functional purpose of the bending tool. When the crimping ring blanks laid on catchers with the forming fingers around the forming fingers and punch annular workpiece is deformed simultaneously in three places, taking the form of a part of the flange. While the claimed technical solution swaging ring harness wrapped around the bending elaynimal a Crescent shape.

Similar features analog and the proposed technical solution is the fact that the formation of the intermediate part in both cases is around the forming elements of the first and second transitions: similar around the punch and the forming fingers, the proposed solutions around the bending element made in the form of a flange and bending rollers. The difference is that subsequent deformation /twisting 180oif similar are the outer part of the intermediate shape of the part, while in the claimed invention further tightening the exposed inner portion of the intermediate forms part of the harness. In the first case the reversal of the three lugs carry out the forming fingers inside the intermediate part flange type. While bending rollers, also falls inside of the intermediate details of the type of a Crescent, perform only the bounding function, and turn the inner part of the intermediate part performs the prisms pot.

The closest to the technical nature of the claimed is a device for flexible closed profiles, mainly mounting loops containing installed on the frame mandrel associated with drive g is m, with the purpose to improve the performance of the device is equipped with guide rods and made in the form of an articulated parallelogram, mounted in two opposite points respectively on the bending actuator member in the first transition, made in the form of a punch, and in the lower part of the base, outside the end of each lever is connected with the corresponding free hinge rods and bending rollers mounted for engagement with the rail.

Similar features of the prototype and the claimed invention is installed on the frame mandrel associated with the bending actuator member in the first transition and the bending rollers of the second transition, the guide rod connected to the actuator bending element made in the form of an articulated parallelogram, mounted in two opposite places.

A significant disadvantage of the prototype is its narrow specialization, which is expressed in the bending of closed profiles from one coil and the impossibility of obtaining closed dvuhvalkovyh profiles. In addition, in the known device uses a forward and backward stroke of the actuator for flexible closed profiles. The finished product is produced for the two transitions and all od the od, but operations are performed in two planes: advanced flexible ring in the horizontal plane and the final flexible rotation of the mandrel 180oaround its own axis. Reverse is blank.

For the described analogs and prototypes common cause, prevent obtaining the required technical result is the impossibility of forming a closed two-loop spiral from the ring of the harness.

The basis of the invention is the task of creating such a device for the manufacture of two-loop sling, in which a new run of its constituent elements and their location will allow for deformation ring of the harness in two-loop closed-loop spiral and to simplify and automate the process of its manufacture.

Simplifying the technological process of manufacture of slings is to replace the operation of inflection of the eight prototype for the operation of the deformation ring of the harness in the intermediate shape of the type of a Crescent, which further prevents the occurrence of effect of springback double ring, and therefore there is no need of fixing the wire received two-loop sling.

As riservati the manufacturing process of these products.

The problem is solved in that the device for producing two-loop sling of an annular bundle containing installed on the frame mandrel associated with the drive matrix and bending rollers, guides and rod connected to the actuator mandrel made in the form of an articulated parallelogram, mounted in two opposite places, according to the invention the matrix is in the form mounted on the movable frame flange, equidistant mandrel made prisms in the form of a horseshoe, comprising three pivotally connected parts, of which the middle part is rigidly connected through the Shoe with traction enclosed in a guide bushing secured in the pipe, and end dorobernia components of the mandrel one end pivotally connected with shoes, and in its middle part connected with the arm connected pivotally with the pipe, and traction is made with the possibility of axial movement and rotation together with the pipe, the pipe is kinematically connected to the actuator can be rotated around its axis, and the mandrel is made with a groove around the outer contour.

In the particular case execution device rigidly attached to the frame clamps billets set is implemented inventions provide technical result bringing deformation ring of the harness in two-loop closed-loop helix. It simplifies and mechanisims the process of manufacturing two-loop sling.

Cause-sledstvennaja the relationship between the set of essential features of the claimed invention and achievable technical result consists in the following. For a method of manufacturing two-loop sling deformation ring harness on the first transition in the shape of the type of a Crescent dictated by the need to prepare this intermediate part shape, from which it could easily get two-loop closed-loop helix. The Crescent shape for the intermediate parts are good that the deformation ring of the harness to get it going in the same plane. This ensures the elimination of the causes of occurrence of springback effect of the double ring. In addition, the "Crescent" includes an arc larger and smaller sizes, which will be converted into the loops larger and smaller diameters of the two-loop sling. Deformation at the second transition of the inner part of the figure in the form of half rings by 180oyou need to complete the process of obtaining two-loop sling. Ude is LCO.

In the device for manufacturing two-loop strap from the ring harness the mandrel mounted on the frame. Using the mandrel is deformation ring of the harness in two-loop sling for two transitions. On the first transition ring is converted into an intermediate figure of the "Crescent". On the second transition "Crescent" is converted to two-loop closed-loop spiral.

The bending element of the first transition (matrix) and the bending rollers of the second transition associated with the actuator. This communication is done through mobile relative to the base frame, on which are fixed these items. The bending rollers of the second transition is intended for transportation of ring harness to the frame and a flexible intermediate shapes of the first transition. In addition, the bending rollers act as a limiting distribution of the process of tightening the inner part of the intermediate shapes at the second transition of the deformation.

Craving located in the guide bushings connected to the drive mandrel /bending element made in the form of an articulated parallelogram, mounted in two opposite places. Send acts as the second bending element complex structures, vplates with a drive rod, because it is part of an articulated parallelogram, snapped its two opposite points on the mobile traction and stationary part of the base pipe.

Bending the first element of the transition matrix, made in the form mounted on the movable frame flange, equidistant mandrel. On the form in terms of this element is bent along the contour of the outer arc of the intermediate figures - "Crescent". This design matrix is required for laying around her billet ring harness. The flange prevents the displacement of the wire harness when the deformation in the intermediate piece. The collar is made equidistant mandrel to harness covering its outer wall and the bending rollers, could freely through the pot as close to the inside wall.

The execution of the mandrel prisms in the form of a horseshoe, comprising three pivotally connected parts, is necessary to ensure that after receiving two-loop sling deformation ring harness the mandrel could freely out of engagement with the harness. The middle portion of the mandrel is rigidly connected through the Shoe with traction enclosed in a guide bushing secured in the pipe. Such a connection medium Chantepie arcuate components of the mandrel one end pivotally connected with shoes, and in its middle part connected with the arm connected pivotally with the pipe. Performing traction with the possibility of axial movement relative to the tube will allow it through the actuator to move along with the Shoe the middle portion of the mandrel, made in the form of a small segment of the channel, bent in an arc. Rod is made to rotate together with the pipe, so as not to impede the rotation of the pipe.

A discharging pipe connected to the actuator can be rotated around its longitudinal axis will allow the mandrel is connected to the tube to expand the inner part of the intermediate shape of the harness 180oforming a two-loop sling. Grip the mandrel of the inner part of the intermediate shapes at the expense of the groove made on the outer contour of the mandrel. Harness, getting into the groove during the first transition, retained mandrel until the end of the second transition.

In the particular case execution device for holding at the time of deformation of the workpiece ring harness, in the plane of the table to the chassis frame on both sides of the mandrel attached clamps. They are installed parallel to the table at a certain elevation with a gap, several large thickness knutas U-shaped rod.

As a variant, the clamping operation can be performed live. When submitting ring harness on the bench clamps raised. At the time of deformation of the workpiece clamps omitted and hold the harness on the table until the process is complete.

In Fig. 1 shows a workpiece ring harness of Fig. 2 - intermediate figure in the form of a Crescent; Fig. 3 the finished product - the two-loop closed-loop-helix; Fig. 4, the device for manufacturing two-loop sling in the initial position; Fig. 5 view And Fig. 4; Fig. 6, the device for manufacturing two-loop sling, a continuation of Fig. 4; Fig. 7 view B in Fig. 6, a continuation of Fig. 5; Fig. 8 view In Fig. 4; Fig. 9 being retracted, the mandrel; Fig. 10 section G-G in Fig. 9 (a larger image of the cross section of the outer contour of the mandrel).

As the source of the workpiece for the production of two-loop sling is a ring harness 1 /Fig. 1/ made of one continuous filament material. The harness consists of a specified number of turns. Twist the ends 2 of the material carried around the body harness.

On the first transition ring harness is deformed in the same plane in the intermediate piece in the form of a Crescent 3 /Fig. 2/. On the second transition of the inner part 4 of this Phi is the product. As a result of these two operations deformation ring harness receive two-loop closed-loop-helix 6 /Fig. 3/.

Device for the manufacture of two-loop strap from the ring harness /Fig. 4-10) consists of seven core units and structures. This frame 7, the movable frame 8 matrix 9, folding swivel mandrel 10, the clamps 11, the node moving frame 8 with a gear 12 and gear 13, the node rotation of the mandrel 10 with the actuator 14 and the node of the folding mandrel 10 with the actuator 15.

The movable frame 8 is a cover of the table 16. Its movement along the upper part of the table 16 is carried out by means of rollers 17 on the guide 18 of the actuator 12 through the gear 13, the output shaft 19 with the gear 20 and the rail 21 is fixed to the frame 8. In addition to matrix 9, which is a bending element of the first transition on the movable frame 8 is installed bending rollers 22 of the second transition. Matrix 9 made in the form of towering flange attached to the movable frame 8 along the arc of a semicircle.

The mandrel 10, which is the bending element of the first and second transitions, made in the form of an articulated parallelogram, mounted in two opposite places. The working part of the contour of the mandrel is made refract connected with a thrust of 25, enclosed in the guide bushing 26 that is attached to the pipe 27. The pipe 27 is enclosed in bearings mounted in the casing /Fig. 6/. End arcuate components 28 and 29 of the mandrel in its middle part through pins 30 and 31 are connected with the levers 32 and 33 are fastened pivotally with the pipe 27. The ends of the components 28 and 29 pivotally connected to the shoes 24. Thus hinged folding parallelogram formed arcuate elements 28, 29 and the levers 32, 33. The parallelogram is fixed in the two places: attached to the Shoe 24, which is movable, and to the pipe 27, which is fixed in the axial direction. The outer contour of the mandrel 10 is made equidistant superficiality matrix 9. On the convex working surface of the mandrel is formed the groove 34. The folding parallelogram frame 10 is made with a lever 25, having the ability longitudinal axial movement. Through the bearing 35 of the coupling 36 and the second end of the traction bar 25 is connected to the actuator 15. The drive installed in the frame 7, is acting pneumatic cylinder. The mandrel 10 has the ability to rotate around its axis. This is done through a pipe 27, on which is mounted a gear wheel 37 that is part of the mesh with the gear 38 of the gear 39, kinematically 36, it also has the ability to rotate around its axis.

The clamps 11 are made in the form of an elongated U-shaped rod, the ends of which are enclosed in the hinges 41 and 42, mounted on the table 16. These hinges are attached the ends of the other rod 43 connected to the actuator 44. As the actuator is a pneumatic cylinder.

The device operates as follows.

Ring harness 1 is placed on the table 16, covering the matrix 9 and two bending roller 22. Side clamps 11 are pressed harness 1 to the table 16 and the frame 8/, see dotted line position of the clamp of Fig. 5 and 8/. The pressing ring harness is at the point of activation of the actuator 44 acting on the rod 43, through which the hinges 41 and 42 acts on the U-shaped rod clamp 11. When the longitudinal movement of the frame 8 is rolled on the mandrel 10 with the circular loom 1. To move the frame is made from the actuator 12. Torque is transmitted through the reduction gear 13, the output shaft 19 with the gear 20 on the rail 21. The mandrel 10 is installed in a horizontal position and fixed by the brake 40. Part of the contour ring harness 1 enters the groove 34. Harness is deformed in the shape of a Crescent 3, by repeating the contours of the matrix, and is fitted around the bending rollers of the shift of the method of manufacturing a two-loop sling. Between the inner part 4 of the loom 1 and its outer part 5 remains the technological gap. In the future, this gap is used for hanging the outer part 5 two-loop sling to the crane hook.

The second transition technology two-loop sling is the reversal of the inner part 4 Crescent 3. This disables the brake 40, the holding frame 10 in a horizontal position. The actuator 14 through the gear 39, the gear 38 and the gear wheel 37 transmits torque to the pipe 27. As the levers 32 and 33 hinged parallelogram is connected to a pipe 27, the torque is transmitted to the terminal arcuate components 28 and 29, and through them to the Shoe 24 and the middle part 23 of the mandrel 10. After rotating the mandrel at an angle of 180oshe stops, transforming the shape of a Crescent 3 in the two-loop closed-loop-helix 6, and now the brake 40. Bending rollers 22 are limiters process of turning the inner part 4 Crescent 3. Clamps 11 does not allow the outer part 5 of the harness to slip off the shoulder of the matrix 9 and the rollers 22. To exit the mandrel 10 from the finished sling is a folding parallelogram frame 10. This turns on the actuator 15, the rod through which the soybean is esasy on guide bushings 26, removes the Shoe 24 from the pipe 27. Articulated parallelogram is drawn. The free ends of the components 28 and 29 are approaching the pipe 27 /see dotted line in Fig. 5/. Convex working surface of the mandrel becomes closed. This facilitates release of the mandrel from the finished sling. The collapse of the mandrel 10 can also be produced during rotation of the inner part 4 of the harness. This facilitated the process of formation of the closed two-loop helix 6. Rotation of the actuator 12 to the opposite side of the movable frame 8 is rolled back to its original position. Ready sling in the form of a closed two-loop helix remains on the shoulder of the matrix 9 and the bending rollers 22. He is transported by the frame 8, leaving contact with the mandrel 10. After a stop frame 8 sling 6 is removed from the table 16.

Boundary setting method of manufacturing a two-loop strap from the ring of the harness is the angle of turn of the mandrel. When the angle spread more 195obroken configuration of the product. The output of the mandrel from the finished sling becomes impossible because of the engagement of the free end portions 28 and 29 closed up with a tow sling ready. When the angle spread of the mandrel 10 less 165onot achieved the desired configuration sling. Ihad mandrel from the finished sling easier.

A specific example of the fabrication of two-loop sling from rod 6.5 mm with internal 600 mm, capacity of 1.5 T. the size of the larger diameter 1050 mm Under a specified load harness sling should consist of 5 threads. Pre-made ring harness 1 from a continuous thread rod with twisted ends 2 inside the harness is placed on the table 16. The diameter of the bundle is equal to 1950 mm Ring harness 1 comprises a bead matrix 9 and the bending rollers 22. The radius of curvature of the shoulder of the matrix 9 is 525 mm Radius mandrel 10, as measured by the stream 34, is 450 mm, the Movable frame 8 is rolled on the mandrel 10 with the harness 1. On the first transition ring harness 1 is deformed in the Crescent 3 with the following parameters: the radius of the inner part 4 is equal to 450 mm, and the outer part 5 525 mm Radii of bends the ends of the "Crescent" around the bending rollers 22 is equal to 38 mm

After turning the inner part 4 with mandrel 10 180o"Crescent" /Fig. 2/ converted into a shape resembling two-loop closed-loop-helix 6 /Fig. 3/. During rotation of the inner part 4 of the outer part 5 of the harness held by the clamps 11. After returning the frame 8 to the initial position ready sling shall be removed from the matrix 9 and the rollers 22 is closed Oh spirals without subsequent occurrence of springback effect double ring, it simplifies the process of its production. When carrying out the invention a device for the manufacture of two-loop sling will allow the deformation ring of the harness in two-loop closed-loop spiral and to mechanize the process of its production.

1. A method of manufacturing dubelyoo sling from the ring of the harness, including the winding ring of the harness with a specified number of turns, recruited from continuous filament wire, sakrivanje the ends of the thread around the body harness, the deformation ring of the harness in two transitions with the formation of the first transition of the intermediate pieces and the second transition shape in the form of a closed two-loop spiral, characterized in that the first switching ring harness is deformed in the horizontal plane in the shape of the type of a Crescent, and on the second transition of the internal part of the harness in the form of half rings, forming an intermediate shape, distort rotated it 180oin another plane when the application efforts that hold in the initial position of the outer part of the harness.

2. Device for manufacturing dubelyoo from the ring sling harness containing installed on the frame mandrel associated with the drive m is executed in the form mounted on the movable frame flange, equidistant mandrel, the mandrel is made in the form of a flexible horseshoe, comprising three pivotally connected parts, of which the middle part is rigidly connected through the Shoe with traction enclosed in a guide bushing secured in the pipe and the arcuate end portion of the mandrel one end pivotally connected to the Shoe and in the middle part connected with the arm connected pivotally with the pipe, thrust made with the possibility of axial movement and rotation together with the pipe, kinematically connected to the actuator can be rotated around its axis, the mandrel is made with a groove around the outer contour.

3. The device according to p. 2, characterized in that on the frame rigidly fixed clamps billet installed parallel to the table with a clearance of not less thickness harness.

4. The device according to PP.2 and 3, characterized in that the clamps are made lever actuated.

 

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2 cl, 2 dwg

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

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: 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: 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: machine engineering.

SUBSTANCE: device contains wire accumulators, wire winding unit, spring winding mandrel, rotation mechanisms for the mandrel and the wire winding unit. The corresponding wire supply units with individual drives are located between the wire accumulators and the wire winding unit. The wire accumulators, the wire supply unit and the wire winding unit are arranged in series. The wire accumulators and one end of the wire supply unit are rigidly connected to the first support ring, and the second end of the wire supply unit and the connecting flange of the wire winding unit are rigidly connected to the second support ring. The support rings are rotatably mounted in support posts and at least one of them is provided with rotation mechanism. The wire accumulators are made with the possibility for eliminating unintentional unwinding of the wire. The wire supply unit is configured for tensioning the wire before it is fed to the wire winding unit and for controlling the amount of this tension.

EFFECT: increase serviceability of the produced multicore springs and stability of their operating parameters, control tension level of wires and thereof adjustment possibility.

7 cl, 13 dwg

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

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