Device for high-strength multi-core springs manufacturing

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

 

The invention relates to the manufacture of stranded helical compression spring in mechanical engineering and in other fields of hardened, patented held prior thermomechanical processing of wire, including high-temperature vtmo.

A device for the manufacture of stranded springs in U.S. Pat. EN 2210455 C1 [1], comprising a mandrel for winding the spring, the mechanisms of rotation of the mandrel and the cops and the mechanisms of movement of the spool along the mandrel, movable along the mandrel sleeve for strand wire rope and revolving spool reels containing accommodated in the housing ring, bearing retaining coil with a stock of wire, and the drive gear fitted coaxially installed with the yoke and rigidly associated sleeve, having performed on its outer surface spline grooves, and a flange, and gear supplied mounted inside parallel to one another friction disks that are in the slots of the sleeve, characterized the fact that the coil is placed radially on the spool so that the drive gear reels are rotated, objetivas around located on the same axis with the spool stationary Central gear and the spool is rotated by means of shaft with keyway and gears from a common drive. This device allows you to navigate qualities is stranded by the spring of patented wire in one operation by synchronizing and combining operations slyvania rope and coiling wire on a mandrel with a simultaneous twisting and stretching of the wire.

The technical result of the present invention is to expand the technological capabilities of the device and further improve the quality of the springs.

The technical result is achieved by the presence of the inductor to heat the wire passing through it, located on the mechanism for moving the spool near the hub for strand wire in the cable, and the presence of a cooling device located on the mechanism for moving the spool, for cooling passing through it wound spring.

Figure 1 shows the lathe, designed for modernization; figure 2 shows a diagram of the device for manufacturing multi-spring cross-section of the drive shaft with keyway; figure 3 shows the spool of the device; figure 4 shows the coil to accommodate wire; figure 5 shows a manufactured stranded spring.

The device consists of the following units and parts. Gearbox 1 with built-in actuator is connected with a box of feed 2 and the drive shaft 14 of the spool 10 by means of the guitar 3. Sleeve for strand wire in the cable 8 is fixed in the tool holder 18 of the caliper 4 and is located in the immediate vicinity of the mandrel 7. The tool holder 18 is also attached to the inductor for heating the pass-through wire 19. The mandrel 7 with nalivaeva spring passes through cool is its device 20, attached to the caliper 4. One end of the mandrel 7 is fixed in the three jaw Chuck 6 gear box, and the second end of the mandrel is supported by the tailstock center 5 devices. Coil 9 [2] located on the spool 10. A spring-loaded coil 11 is attached to the housing 21 of the spool 10 is installed on the support plate 4. The drive shaft 14 with the keyway through pins 13 and set of gears 12 is connected with the Central gear 15 of the spool 10 and transmits the rotation from the gear box 1 on the spool 10. Lead screw 17 feed box interacts with the caliper 4, moving it.

The device operates as follows.

In the device set filled wire coil 11 and coil 9, similar to the one shown in figure 4. The wire from the coil is passed through the sleeve for strand wire in the cable 8 and pinch on the mandrel 7. Then include the drive device.

Thus, the following occurs.

1. The spool 10 with the location of the coils 9 is rotated in the housing 4 of the spool in the desired direction through the impact of the drive shaft 14 and a set of gears 12 on the gear of the spool 15. This drive gear coils 9 obkatyvalisj around located on the same axis with the spool stationary Central gear 16. The Central wire is stretched between the coil 11 and the mandrel 7 and is the basis of multi-core spring core. is as it is wound and sbivaetsya in the cable wire of the coils 9. In the absence of a Central wire rope sbivaetsya without it.

2. The mandrel 7 rotates and pulls the wire of the spring coils 9 and 11 through the coil to heat the wire 19 and spool heated in the inductor 19 and sweet in the sleeve 8 rope on itself, forming a spring. Mounted on the moving support 4 sleeve 8, the inductor 19, the cooling unit 20 and the spool 10 are moved along the mandrel 7, the forming step nalivaeva the spring. While passing through the cooling unit 20 is wound the spring is cooled. The movement of the caliper is screw 17, and a step of movement is ensured by setting feed box 2 guitars and 3. Due to the rotation of the coils 9 and their design create the necessary efforts twisting and stretching the wire when svidanie in the cable and the simultaneous winding of wire on the mandrel 7, and due to the structure of the device operatively adjusting step and the angle slyvania rope and step nalivaeva spring.

Wound so given the length of the spring is cut and sent for welding all lived, if necessary, further heat treatment, applying a protective coating, samevolume, measurement of geometric and strength parameters according to the method [3].

The advantage of this device over known is that when wrapped stranded springs offers the suggested device simultaneously with the winding to produce the following types of heat treatment, using the inductor and the cooling device in various combinations:

- stranded springs from hardened wire - wrapped to harden;

- stranded spring of patented wire or held prior thermomechanical processing, including high-temperature - wrapped to expose vacation;

- stranded spring of patented wire or held prior thermomechanical processing, including high-temperature - wrapped to expose additional thermomechanical treatment [4];

- hard springs of small index in the winding to heat to reduce the effort of winding and achieve tight winding.

Achieved by expanding the technological capabilities of the device will combine the operations of manufacturing springs and to improve their quality.

Sources of information

1. Pat. EN 2210455 C1 IPC B21F 35/00. Device for the manufacture of stranded springs. / Zemljanushnov POSTGRADUATE, Tabanco, Y.M. No. 2002120673/12; Appl. 29.07.2002; publ. 20.08.2003. Bull. No. 23. - 6 S.

2. A.S. 453212 of the USSR, M. CL. VS 47/16, 21F 23/00. Device for winding elongated material. / Tabanco, Y.M. No. 1913370/25-27; Appl. 03.05.73; publ. 15.12.1974, bull. No. 46 for 1974 - 2 C.

3. Application No. 2007144045(048256) from 27.11.2007 (decision on the issuance of U.S. Pat. from 18.11.2008).

4. Ruhstadt A.G. spring steel and alloys. - 3rd ed. revised and enlarged supplementary/ AGR Gstadt.- M.: Metallurgy, 1982. - 400 C.

1. Device for the manufacture of stranded springs containing a mandrel for winding the spring, the mechanism of rotation of the mandrel, the spool having radially located on the coil with the drive gears and a spring-loaded coil with a stock of wire, mechanism for moving the spool along the mandrel, located thereon can be moved along the mandrel sleeve for strand wire rope, stationary Central gear located on the same axis with the spool, while the drive gear coils made with the possibility of rotation when running them around a stationary Central gear and the spool is rotatably through a shaft with keyway, set of gears and drive, characterized in that it is equipped with an inductor for heating the wire passing through it, located on the mechanism for moving the spool next to the said sleeve for strand wire rope.

2. The device according to claim 1, characterized in that it is provided with a cooling device located on the mechanism for moving the spool, for cooling passing through it wound spring.



 

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