SU1553230A1 - Arrangement for hot coiling large-sized springs from bar stock - Google Patents

Abstract

The invention relates to the manufacture of springs, can be used for hot winding of large springs wound from a rod of diameters of 45 mm and more, and allows to improve the quality of the springs by eliminating scuffs from the surface of the rod. The device contains a parallel mandrel, a shaft with elements for laying the reference coils, a step-setting copier, and a pressure pad. The device also has a bar bending mechanism after winding the first support coil onto the winding of the working coils of the spring and back from the working coils to the winding of the second supporting coil, made in the form of a rod mounted with the possibility of axial movement from the power cylinder, and the bending rollers of the rod, whose axes are fixed to rod. The roller interacting with the rod after laying the first support coil of the spring has a radial surface corresponding to the diameter of the rod, and the roller interacting with the rod when laying the second reference coil has a cylindrical surface. In this case, the end disk, which forms the surface of the second support coil, has a quadrant-cut sector cut. 5 il.

Description

The invention relates to the manufacture of springs and can be used for hot winding helical cylindrical compression springs, mainly large, wound from a rod with a diameter of 45 mm or more.

The purpose of the invention is to improve the quality of the springs by eliminating scoring on the surface of the rod.

FIG. 1 shows the proposed device, a general view; in fig. 2 is a view A of FIG. one; in fig. 3 shows a section BB in FIG. 2; in fig. 4 - device when translating the rod from the laying of the first support coil to the step of winding; in fig. 5 - the same, when translating from the laying of working turns to the laying of the second reference coil.

The device comprises a mandrel 1, which interacts with a square spike (not shown) with a cartridge 2, in which there is a grip of 3 bars. A shaft 4 is connected with a chuck 2 via a gear ratio with a 1: 1 ratio (Fig. 2) on which the stacker 5 of the first support turn, the stacker 6 of the second support turn, having a profile lug for rolling the rod end into a spring diameter, and an end face are fixed the disk 7 forming the flat surface of the second support coil of the spring.

The end disk 7 has a 1/4 sector cutout (Fig. 3) and is fixed on the shaft 4 so that the end of the bar enters this notch when winding the spring (Fig. 5, the position of the bar). By means of gear 8 and 9, the step-setting copier 10 is connected with the chuck and the shaft 4 with the stacking elements of the support coils. Gear ratio gear 1: 1, so the cartridge 2 with mandrel 1, shaft 4

listened to

with y

with

and the step copier 10 is rotated synchronously from a drive (not shown).

Under the mandrel 1, the gland 1 1 is installed with the possibility of lifting and lowering (Fig. 1).

The spacer of the rod 12 and the roller 14 of the bend of the bar moves the bar from position D to position D (Fig. 5), i.e. the end of the bar is set perpendicular to the axis of the mandrel and the end disk 7 together with the stacker 6 (Fig. 2) is laid the second reference coil spring.

At the end of the winding, the pressure pad 11 (Fig. 1) rises and holds the spring for the time it is removed from the bar feed side. A bar bending mechanism is installed from the support coil to the coiling step and back from the coiling step to the second support coil

springs, consisting of a rod 12 (fig. 2), 10 ki 1. Next, the pressing pad is axially displaceable moving away and the spring rolls onto quenching by driving an actuator, for example, of a power cylinder (not using the invention

shown). Axles are fixed on rod 12 to produce hot winding of large-sized rollers 13 and 14 of bending. Ritual springs from large diagonal wheels 13 have a radial surface, so 15 meters (45 mm and above) that do not have any traces as it interacts with a round bar, and roller 14 is a cylindrical surface, as it interacts with a rectangular section of the rod end. The operation cycle of the device is automated by track sensors and a relay-contactor circuit. 20

The device works as follows. A device for hot winding is a large Heated bar 15, from which Navi-dimensional springs from a rod, containing

spring is placed on the frame-parallel mandrel, the shaft with

1 under the grip 3 of the chuck 2. The grip 3 with the stacking elements of the support coils with the end of the bar to the bar end of the bar 1. Chuck 2 "washer for laying the plane of the support

and scoring on the surface of the springs from the elements of laying coils and enhancing the quality of the springs - fatigue strength.

Claims (1)

Invention Formula from the drive, the mandrel 1 starts to rotate, and also through gears - the shaft 4 with the support coil laying elements and the step-setting copier 10. Firstly, the first pick-up, the step-setting copier and the pressure pad with a helical groove, which improve the quality of the springs by eliminating scoring on the surface of the rod, it is equipped with a mechanism ny turn. The stacker guides the stacker 6. After the bending of the bar after winding the first bearing of the first support turn, the roller 13 of the bend of the bar (Fig. 4), moved by the rod 12, deflects the bar 15 from position B at an angle to the mandrel equal to the angle of the helix of the spring. from the working turns to the winding of the second support turn, made in the form of a rod, installed parallel to the mandrel with the possibility of axial reapplication of the rod into the groove of the drive from the drive, and the rolls of the limb of the rod 10 and is in copier groove, while laying the working coils of the spring. After laying the working coils of the spring, the groove of the copier 10 ends, the bar is in position D (Fig. 5) at an angle of winding pitch relative to the mandrel. In position G, the bar does not touch the face disc 7, since the disc in the winding zone at this time is opposite the bar with its sector cut (Fig. 3). There is a re 40 The axes of which are fixed to the rod, the roller serving to interact with the rod after laying the first support coil of the spring has a radius surface, and the roller serving to interact with the rod when laying the second support turn has a cylindrical surface, while the end washer for laying the plane of the second reference coil has a quadrant circle cut. The spacer of the rod 12 and the roller 14 of the bend of the bar moves the bar from position D to position D (Fig. 5), i.e. the end of the bar is set perpendicular to the axis of the mandrel and the end disk 7 together with the stacker 6 (Fig. 2) is laid the second reference coil spring. At the end of the winding, the pressure pad 11 (Fig. 1) rises and holds the spring for the time it takes to remove the frame from it (45 mm and above), without any marks. and scoring on the surface of the springs from the elements of laying coils and improving the quality of the springs - fatigue strength. Invention Formula turn, step-setting copier and pressure pad with a screw groove, characterized in that, in order to improve the quality of the springs by eliminating scoring on the surface of the rod, it is equipped with a mechanism coil for winding the working coils of the spring and back with the working coils for winding the second support coil, made in the form of a rod mounted parallel to the mandrel with the possibility of axial displacement from the drive, and bend rolls rod The axes of which are fixed to the rod, the roller serving to interact with the rod after laying the first support coil of the spring has a radius surface, and the roller serving to interact with the rod when laying the second support turn has a cylindrical surface, while the end washer for laying the plane of the second reference coil has a quadrant circle cut. eleven Vida 15 Yu FIG. 2 5 B FIG. 3 15 12 Ю FIG. four