SU755340A1 - Rolling stand with multiroll pass - Google Patents

Description

The invention relates to the field of metal forming and can be used in rolling shops of metallurgical and machine-building factories.

According to the main auth. No. 391872 is known for a rolling stand with a multi-roll caliber, in which the pressure device is made in the form of an eccentric of the axle shaft entering the hole of the cushion; the axis of the shaft is parallel to the axis. roll, and the pillow is made with cylindrical guiding surfaces with an axis that coincides with the axis of the roll [1] -. The eccentric shaft is mounted on an axially adjustable body, the end guide of the pillow on the non-driven side of the cage is designed as a removable cover, and in the station there is no opening for removing the roll with the pillow beyond the dimensions of the cage.

The known device does not provide the possibility of displacing one pair of rolls (horizontal) in the rolling direction 25 relative to the other pair of rolls (vertical) in the rolling process, does not allow simultaneous rotation of the guide pads of the work rolls to the required angle, and

also does not provide the possibility of obtaining two separate deformation centers in the rolling process, formed by pairs of horizontal and vertical rolls.

The aim of the invention is the elimination of these disadvantages.

This is achieved by the fact that the rolling stand with a many-gauge caliber is provided with pivotally mounted inclined guides, which interact with the cylindrical guide surfaces of the work roll cushions and are made with the possibility of changing the angle of inclination.

The cage is equipped with a system of rods and levers with a common rotational drive-a, connecting with each other and with the frame. The work roll pillows are inclined in the opposite direction.

FIG. 1 shows the proposed rolling stand in the section; in fig. 2 the same, side view.

Rolling mill contains work rolls 1, mounted on bearings in pillows 2, mounted on eccentric shafts 3, which are installed in frame 4. Drive

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the eccentric shaft,> which is also a pressure device, is carried out from the worm gear 5. The pillows of the work rolls, made with cylindrical guiding surfaces with an axis coinciding with the axis of the roll, are connected in the axial direction by means of the housing 6 and adjusting nut 7 with a bed. Gear 8, spindles 9 and junction box 10 provide a kinematic connection and drive all work rolls.

On flanges 11 and 12. the guide rails 13, interconnected by rods 14, are hinged. The tilt angle of the rails is changed from a common drive, made in the form of a screw 15 and a nut 16 mounted on the flange 12. The tilt angle of the rails is changed by turning the nut 16. In the process of rolling, when the work rolls receive a radial movement during rotation of the eccentric pressure mechanism, the cylindrical guide pads interact with the inclined guides and transform the additional movement along the axis of rolling.

To create separate deformation areas in the rolling process, formed by pairs of horizontal and vertical rolls, the respective guides are installed with a slope in opposite directions.

The described rolling stand can be used in the production of profiles obtained by forging or stamping, as well as those profiles whose formation in two-roll gauges is difficult or

for several passes. The use of the invention in production will increase productivity by 15% and provide metal savings of up to 10%.

Claims (3)

Claim 1. Rolling mill with multi-roll caliber on the author. St. No. 391872, characterized in that, e the purpose of ensuring the possibility of displacement of one pair of rolls, for example horizontal, in the direction of rolling relative to another pair of rolls in the rolling process, the cage is provided with pivotally installed inclined guides, interacting with cylindrical guides. surfaces pillows work rolls and made with the possibility of changing the angle of inclination. 2. Crate pop. 1, characterized in that, in order to synchronously rotate the guides at the required angle, it is equipped with a system of rods and levers with a common drive. rotation, connecting the guides between themselves and with the frame. 3. Crate pop. 1, characterized in that, in order to obtain two separate deformation centers, formed by pairs of four-roll gauge rolls, the respective guide pads of the work rolls are inclined in the opposite direction.