SU1225660A1 - Forging rolls - Google Patents

Description

The invention relates to the processing of metals by pressure, in particular, to the production of special products by rolling, and is intended for the profiling of blanks before hot forging on hammers and crank mountains for stamping presses.

The purpose of the invention is to increase the rigidity of the position of the axes of the rolls, as well as to increase productivity by providing quick replacement of the working tool.

FIG. Figure 1 shows the kinematic scheme of the forging rollers; in fig. 2 is a view A of FIG. 1; in fig. 3 is a section BB in FIG. 2; in fig. 4 — node I in FIG. 3; in fig. 5 is a section bb In Fig 1.

In the frame 1, in the supports 2-5 mounted working lower 6 and upper 7 rolls. Between the supports, inside the frame, on the non-working parts of the rolls, gears 8 and 9 of the connection of the working rolls are mounted. One of the work rolls, in this case, the bottom 6, is kinematically connected through a system of gears 10-13, clutch 14, belt drive 15 and pulley 16 to the electric motor 17. The gear 13, clutch 14 and brake 18 are mounted on intermediate shaft 19. Coupling 14 and brake 18 through valve 20 and valve 21 of sequential switching on and off are connected to a source of energy carrier (not shown) by pipes 22 and 23. Forging rollers are equipped with an angle adjustment mechanism 24, an inter axial adjustment mechanism 25 and a compensation mechanism 26 zorov in gear wheels 8 and 9, which link the lower 6 and upper 7 work rolls.

On the working (cantilever) parts of the work rolls, annular die-cutting sectors 27 and 28 are installed, consisting, as a rule, of four or five streams. To eliminate the large divergence of the working parts of the rolls, the free ends of the working rolls are fitted with a clamp 29, made in the form of a one-piece plate, the lower outer surface of which is made semi-cylindrical and entering the internal semi-cylindrical surface of the support 30. The axially movable axle is mounted with its guides pins 31 and 32 in the holes of the bosses 33 and 34 of the bed 1. In the upper part of the stitch 29, in the upper ring bearing 35, a support 36 is installed, made in the form of an eccentric washer with a torsionally attached to the axis of the working upper 7 roll with a screw-hole 37, connected with a turning actuator screw 38. In the lower working roll 6, along its axis, there is a threaded hole that includes a screw 39 with a cap, shaped cup, washer 40, lock nut 41 and the limiting bracket 42 mounted on the washer 40 of the lower ring bearing 43.

0 5

0 5 5

five

On the thread-free end of the screw 39, there are limiting shoulders 44 and 45, in the groove between them there is a sidewall of the limiting bracket 42 and a limiting hole 46 with openings for the key. Laminated billet 47 and nut 48 on screw 39 are shown.

Forging rollers work as follows.

The torque from the electric motor 17 through the V-belt transmission 15, the clutch 14, gears 13, 12, 11, 10, 8 and 9 is transmitted to the lower 6 and upper 7 work rolls. Rotating together with the work rolls, the annular die sectors 27 and 28 roll the workpiece 47. After passing the annular die sector through one stream, the workpiece moves to the second, after the second to the third, and so on until the last stream.

The working rolls are stopped and started by the brake 18 and the clutch 14, respectively, by successively connecting the cavities of their cylinders with the energy carrier and the atmosphere.

Staging and removing or replacing the annular die sectors 27 and 28 is carried out with the release of their working parts of the working rolls.

The release of the ends of the work rolls is performed as follows. The nut 48 on the screw 39 of the lower work roll 6 is unscrewed one to two turns. A key (not shown) is inserted into the hole 46 and the screw 39 is unscrewed from the work roll 6. The screw 39 unscrews from the work roll, its shoulder 44 rests in limiting bracket 42 The latter, in turn, acts on the washer 40, and together with it on the lower strut bearing 43 with the stitch 29. The screw 39, being unscrewed, moves to the right according to the drawing, thus moving the indicated details. The movement is carried out until the screw 39 is unscrewed from the work roll, i.e., until the ends of the work rolls 6 and 7 are free to change the ring-shaped stamp sectors 27 and 28.

Thereafter, the restrictive bracket 42 is removed by first unscrewing the bolt, and the screw 39 is removed.

Then, the mechanism 25 performs the axial adjustment to the desired value. The die stamping sectors are replaced by others. Replacing the latter, a screw 39 is inserted, a restrictive bracket 42 is inserted between the shoulders 44 and 45 of the screw 39 and fixed with a bolt to the washer 40.

A key is inserted into the bore of the shaft 46 and the screw 39 is screwed into the work roll. When screwing in the screw, the collar 45 rests on the limiting bracket 42, transferring the force to the washer 40, the lower stitch bearing 43 and to the grommet 29. The screw 39 is screwed in.

moves to the left in the drawing, while moving the indicated parts.

When the clamp 29 reaches the ends of the work rolls 6 and 7, the screw 39 is no longer screwed into the work roll 6, and hence the movement of the stud. The worm is rotated to 38 in a known manner and through the worm gear 67 the rotation is transmitted to the eccentric support 36. Thus, the center-to-center distance between the holes in the coupling 29 changes to the ends of the work rolls 6 and 7, having reached the desired center-to-center distance, screw in screw 39 by moving the tie bar to the left according to the drawing. Moving is carried out up to the stop of the washers 40 into the shoulders of the work rolls 6 and 7 with a certain gap. Thereafter, the nut 48 is screwed onto the screw 39 until it stops. Rollers are ready for further work.

38

X

FIG. 2

Fig.Z f

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2ff

Claims (1)

FORGING ROLLERS containing roll mounts mounted on the frame, a working tool mounted on the rolls, a drive for rotating the work rolls and mechanisms for angular and radial adjustment of the rolls, characterized in that, in order to increase the rigidity of the roll axes, as well as increase productivity by providing quick replacement of the working tool, one of the roll supports is made in the form of a monolithic plate with one semi-cylindrical outer surface and with two holes designed to accommodate the ends of the rolls, p When in use, monolithic plate movably mounted relative to the frame, and a radial adjustment mechanism is configured as a plate mounted in the bore of the eccentric washers work roll concentric to the axis of the worm and the crown associated with the last rotation of the worm drive eccentric washers.