Device for the manufacture of stranded springs

 

The invention relates to the manufacture of stranded springs in engineering and other technical fields. The technical result of the device is synchronizing and combining operations strand rope and coiling wire on a mandrel with a simultaneous twisting and stretching of the wire. This is achieved by the carriage of a lathe mounted spool containing coils mechanisms for twisting and stretching the wire, for example, is placed radially on the spool so that the drive gear coils obkatyvalisj around stationary and located on the same axis with the Central spool gear. The spool is rotated by means of shaft with keyway and placed in its housing set of gears with key from the shared drive. 6 Il.

The invention relates to the manufacture of stranded springs in engineering and other technical fields.

It is known that the destruction of the stranded spring initially destroyed one lived without violating the integrity of a spring that allows it to detect malfunctions of the spring until the shut it down and avoid sudden failure of the product. This increases the reliability and safety of the work, the poet is.

From book 2 "machine Parts" under the editorship of Dr technology. Professor N. With. Acerina (State Scientific and technical publishing house engineering and shipbuilding literature, Moscow, 1953, page 238) it is known that the process of manufacture of stranded springs is divided into several operations, including: 1 - svidanie rope on special machines; 2 - acceptance of cable (display cable and measuring its diameter and spacing); 3 - wrapped springs from the cable using a different machine, the mandrel is specially selected diameter (power cable tension when electric current is applied to the mandrel affects the position of the point FKfracture characteristics on the power chart, spring).

Special machines consist of an actuator, rotary suepayday parts (spools) installation frame and the supporting rollers, crimping device with the other hand and switalski dies (eyes), the traction mechanism and the transport mechanism for winding the rope on the take-up spool (672 B-90, Bukstein M. A. "the Production and use of steel wire rope, metallurgy, 1973, Moscow, page 130).

To winding machines include lathe ("Processing of materials by cutting", C. S. Nekrasov, Moscow, VO "Agropromizdat", 1988, page 93), the basic units to the em 4, the tailstock 5 (Fig. 1). Machine control is carried out: handle of the gearshift; arm switching element is increased step; fungus control for cutting right and left threads; handweel manual longitudinal movement of the carriage; a slider with a button to turn on and off a rack and pinion gear apron; handle manual lateral movement of the support; push-button station; a handle for manual movement of the upper part of the support plate; power button quick movements of the caliper; arm enable, disable, reversing the longitudinal and cross feeds of the support; handles turned on, off, and reverse the spindle; a handle include uterine nuts apron; arms control box feed.

On this machine, thanks to its wide versatility avivausa as stranded from the finished cable, and single spring of the rod (wire). For this purpose, the spindle has three jaw Chuck 6 for securing it to one end of the mandrel 7 for winding springs. The other end of the mandrel 7 support center tailstock 5. Cable (wire rod) is passed through the grommet (eyelet), mounted on the slide holder. Longitudinal carriage feed is oilrich springs requires two machines and two machine operations, what unproductive.

A device (Fig. 2) copyright testimony 453212 with the formula of the invention: "Device for winding elongated material, mainly wire containing accommodated in the housing, the housing carrying the coil with the stock wire and the drive gear, characterized in that the purpose of regulation in the process of unwinding efforts twisting and tension it is provided with a coaxially installed with the yoke and rigidly associated bushing and flange, having performed on its outer surface spline grooves, and gear supplied mounted inside parallel to one another friction disks that are in the grooves of the sleeves.

A disadvantage of this device is the inability to manufacture a multi-strand coil springs.

It is also known a device for the manufacture of stranded helices, which contains a mandrel for winding the spiral and the mechanisms of rotation of the mandrel and the spool on which are mounted coil with the wire (ed. St. USSR 1378996, CL 21 F 3/04, 07.03.1988). However, the known device is also not suitable for the manufacture of a multi-strand coil springs.

The present invention is to develop a device for the manufacture of stranded springs for the NYM twisting and stretching of the wire.

The technical result is achieved in that the device comprises a mandrel for winding the spring, the mechanism of rotation of the mandrel, and mechanism for moving the spool along the mandrel with movable along the mandrel sleeve for strand rope and spool reels containing accommodated in the housing ring, bearing retaining coil with the stock wire and the drive gear fitted coaxially installed with the yoke and rigidly associated bushing and flange, having performed on its outer surface spline grooves, and gear supplied mounted inside parallel to one another friction disks that are in the grooves of the sleeve. The coil is mounted on the spool radially so that the drive gear coils obkatyvalisj around located on the same axis with the spool stationary Central gear and the spool is rotated by means of shaft with keyway and placed in its housing set of gears with key from the shared drive.

For the manufacture of stranded springs with the Central housing on the basis of the spool on the same axis with the spool may be located samoustraniajutsia spring-loaded spool of wire for the Central veins.

The proposed device allows you to produce mn is a mandrel with a simultaneous twisting and stretching of the wire.

In Fig.1 shows a lathe.

In Fig.2 shows coil on the author's certificate 453212.

In Fig. 3 shows a diagram of the proposed device for the manufacture of stranded spring.

In Fig.4 shows the spool of the device.

In Fig.5 depicts a cross-section of the drive shaft with keyway.

In Fig.6 depicts the stranded spring.

The device consists of the following components and parts (Fig.3-5).

Gearbox 1 with built-in motor is connected with a box of feed 2 and the drive shaft 14 of the spool 10 by means of the guitar 3. Sleeve (peephole) 8 fixed in the tool holder carriage (conventionally not shown) and is located in the immediate vicinity of the mandrel 7. One end of the mandrel 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 is located on the spool 10. The coil 11 is attached to the housing 4 of the spool 10 is installed on the caliper. 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 rotation from the gear box 1 on the spool 10. Lead screw 17 feed box interacts with the caliper.

Works eliminate the marks in Fig. 2. The wire from the coil is passed through the grommet (eyelet) 8 and pinch on the mandrel 7. Then turn the motor device. When this happens the following.

1 - 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 8 and the mandrel 7 and is the basis of multi-core spring core. Her wound and sbivaetsya in the cable wire of the coils 9. In the absence of a Central wire rope sbivaetsya without it.

2 - Frame 7 rotates and pulls the wire of the spring coils 9 and spool stranded in the Bush (the eye) 8 the cable itself. Mounted on the support sleeve (peephole) 8 and the spool 10 are moved along the mandrel 7, the forming step nalivaeva the spring. 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 designs are created the necessary efforts twisting and ragemojo device, it becomes possible to efficiently adjust the pitch and the angle of lay of the rope, efforts twisting and stretching of the wire on the test results just wound spring, and due to the presence of a common drive is achieved synchronisation nodes strand of rope and coiling wire on the mandrel. It is useful and contributes to the quality of the springs and performance of their production.

Claims

The device for manufacturing a multi-strand coil springs, 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 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 in that the coils are placed radially on the spool so that the drive gear reels are rotated, objetivas around located on the same axis with spoeg drive.

 

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