SU1398973A1 - Mill for rolling rings - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used in the manufacture of rings by rolling. The goal is to increase the productivity of the mill by reducing the time for the implementation of loading and unloading of the products. The mill contains three supports mounted on the frame. The two extreme supports each have a hollow spindle, and the middle support has two spindles. All spindles are mounted coaxially. Trunnions of two inner rolls, which are installed between the supports, are placed in facing spindles. The mill has one drive outer roll, set. perpendicular to the rolling axis. On both sides of the outer roll are sets of mechanisms for loading workpieces and unloading products. This mill design allows the inner roller to be alternately supplied with the workpiece attached to it under the outer roller for rolling. During idling of the outer roll, the previously rolled product is removed from another inner roll and loaded onto the next billet. 4 il. (L with

Description

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The invention relates to the processing of metals by pressure and can be used in the manufacture of rings by rolling, 5

The aim of the invention is to increase the productivity of the mill by reducing the time for the operations of loading the blanks and unloading products, to

Figure 1 shows a mill for rolling rings, a general view; figure 2 - the same plan (pressure device not shown); on fig.Z - section aa in figure 1; figure 4 - section bb 15

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The mill for rolling rings contains tannin I, outer swath 2, support olics 3 and 4 (Fig. 3), internal rolls 5 and 6 with trunnion 7 (Fig. 2). The second 20 is symmetric pin on the drawing is not sweat :; cauldron. Supports 8, 9 and 10 are mounted on the frame with displacement drives in the form of power cylinders II and 12, stops 13 and 14 restrict movement of supports (Fig. 2), loading mechanisms 15 for blanks and unloading 16 products.

In frame 1, the columns 17 are reinforced on which support 18 is located. Support 30 connects to the drive 19 and moves the outer roll 2. The drive of the outer roll roll consists of the engine 20, gearbox 21 and spindle 22.35

The inner rolls 5 and 6 are reinforced with one end coaxially in the supports B and 10. The support 9 has on both sides hollow tongs for mounting the inside rolls 7. All three 40 supports are axially displaceable along the bed guide. The supports 8 and 10 are installed with the possibility of mixing, respectively, from the power cylinders 12 and 11 45 along the guides 23 (Fig. 2). Bearing 9 may be made non-driven. In the frame 1 there are adjustable stops 13 and 14, limiting the movement of the support 9 to the right or left of the EP from the outer roll.

The stroke of the supports 8 and 10 is larger than that of the support 9, taking into account the size of the width of the mechanisms 15 and 16 of the load and its unloading blanks. The design of these mechanisms may be different. The basic requirements for the mechanisms are in TOMj that the original blank

must be fed to a position in which the inner roll can enter its hole, and the rolled ring is raised to a position that allows the inner roll to exit freely. In addition, loading and unloading mechanisms should not impede the movement of supports and blanks.

The workpiece loading mechanism 15 can be made in the form of a slide (FIG. 4, in which the workpiece is fed to a position coaxially with a spindle of the supports. The product unloading mechanism 16 can be made in the form of a rotary tray. Both sets of loading and unloading mechanisms have a similar design.

The mill for rolling rings works as follows.

In the initial position, the outer swath 2 and the support 18 are raised. Supports 8, 9 and 10 occupy the extreme left positions. Between the end of the inner shaft: ka 6 and its place of installation in the support 9 there is an axial gap sufficient for insertion of the workpiece, and the inner roller 5 is installed in the spindle of the support 9, which is fixed in the frame 1 from shifting to the left by the abutment 13. Rolled in the previous cycle, the workpiece, and the support rollers 3 and 4 are retracted from the ring. The slide of the left loading mechanism 15 is raised so that the workpiece located therein is located coaxially with the inner roll 6.

The work cycle begins with moving the support 8 to the right. In this case, the inner roller 6 enters the workpiece opening, and its pin 7 goes into the cavity of the spindle of support 9. In this position, support 8 stops for a time. lowering the boot slide of the left-side mechanism 15. Then the support 8 continues to move to the right, shifting the supports 9 and 10. The movement of the supports stops when the roller 6 is installed opposite the outer roller 2. In this position, the support 9 is fixed from shifting to the right by the support 14 on the station 1 The outer roll 2 moves down, comes into contact with the workpiece, which is put on the inner roll 6, and rolls it out. During the idling of the outer roll 2, the support rollers 3 and 4 are supplied to the workpiece. After

when the desired dimension is reached, by the diameter or thickness of the ring, the outer roll 2 rises, and the support rollers 3 and A are retracted from the ring.

Simultaneously with the beginning of the downward movement of the outer roll 2, operations are started to unload the ring, rolled on the inner roll 5. The right unloading mechanism 16 primes the ring, releasing the inner frame 5. Support 10 is moved to the extreme right position by the power cylinder. 11 until the inner shaft 5 completely exits the ring. A rolled ring along the chute of the mechanism 16 is rolled out of the mill, after which the chute is lowered.

The loading of the original blank to the right is carried out in advance to yen. sing when the outer roll 2 returns to the upper position, successively feed the loading rail of the right mechanism 15 upwards, move the support 10 to the left until the inner roll 5 enters the spindle cavity into the supports 9 and lower the boot slide. Upon reaching the upper positions with the outer roller 2, all three supports 8, 9 and 10 are moved to the left position. In this case, the ring rolled on the inner roll 6 is moved to the left unloading position, and the initial billet, put on the roll 5, is fed under the outer roll 2 for rolling.

In the future, rolling is performed on the roll 5, and on the left set of loading mechanisms 15 and unloading 16, the finished ring is unloaded and the next original blank is loaded, as well as on the right set.

Supplying the mill with an internal roller and a support, as well as a set of loading and unloading mechanisms, allows loading and unloading operations to be carried out simultaneously with the rolling of the ring. Thereby

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The work cycle of the mill is reduced by 1.3-1.7 times and its productivity is increased.

Claims (1)

Invention Formula Rolling Mill; sticking mounted on the frame with the possibility of reciprocating movement along the axis of the support with co-located hollow shpindle, internal roller with pins at the ends, mounted with the possibility of placement by means of pins in the cavity of the corresponding spindles, external drive roller, installed with the possibility of reciprocating forward movement in the direction perpendicular to the axis of the inner roll, support rollers, mechanisms for loading billets and unloading rings, as well as stops for limiting the movement of supports, t is due to the fact that, in order to increase productivity by reducing the time for loading and unloading operations, it is provided with an additional support with a spindle placed coaxially with the existing spindle m, an additional spindle mounted on the adjacent additional support coaxially and oppositely , an additional inner roller with surname at the ends for placing in the cavity an additional spindle and an additional support spindle, as well as an additional set of loading mechanisms s and unloading rings, the two sets of loading and unloading mechanisms are arranged symmetrically with respect to a plane perpendicular to the rolling axis and extending through the middle of the lengths of the outer roller and the support rollers and limiting axial movement stops mounted to vzang. mode with the next with additional support. Фа8.1 J ff