SU376136A1 - DRIVE OF ROLLS FOR COLD COLORING PIPES WITH A STABLE BED - Google Patents

Description

one

The invention relates to a pipe rolling mill and, in particular, to drive devices of the rolls of cold rolling mills for tubes with a fixed bed.

Known drives for rolls of statically cold rolling tubes with a non-moving bed contain rails mounted on the top and bottom of the bed, interacting gears mounted on the necks of the rolls, additional racks placed between gears, and a crank mechanism for moving the lower rails.

However, in such drives, the natural rolling radius does not correspond to the rolling radius of the rolls.

In order to eliminate this drawback in the proposed drive, the upper rails are rigidly connected with the drive of the lower rails, and the additional rails are double-sided and equipped with an additional crank-and-connecting rod mechanism. For adjusting the rolling radius of the rolls, the crank of the additional crank mechanism is adjustable.

FIG. 1 shows a general view of the described drive rolls; in fig. 2 shows a section along A-A “and FIG. one.

In the stationary bed / drive of the rolls of the cold rolling mill tube, rails 2 are installed at the top and bottom, which interact with the cylindrical gears 3, planted and pull 4 working rails 5.

The upper rails are rigidly connected through the yoke 6 with the lower rails and through the links 7 and the wings 8 to the crank mechanism 9 of their movement. Additional JO-rails are placed between the gears, which are double-sided and equipped with an additional crank mechanism 11, the crank 12 of which is adjustable with a screw 13. The additional crank-axle mechanism is connected to the double-arm levers 14 and 15.

During operation, the gears of the 3 rolls are simultaneously engaged with the rails 2 and additional double-sided rails 10. The rails 2 are rigidly connected to each other and are brought into return-postunational movement by means of the crank-connecting rod mechanism 9, the scenes 8 and the rod 7.

The double-sided rails 10 are also rigidly connected to the menu by themselves, and are non-bias, and their non-displacement is carried out with the help of the two-arm lever 14 of the additional crankshaft-connecting rod mechanism 11. The crank 12 has the ability to be adjusted by the screw 13 from the center of the crank wheel 16. To the spawn, the resulting movement of the rolls is formed as an algebraic sum of the movement of the rails 2 and additional rails 10, then at a constant stroke length of the rails 2 of the length

3

the progress of additional rails will depend on the goal turn and the course of the rolls.

By changing the radius of the crank 12, you can change the length of the rolls and the angle of their turn.

As a result of the interaction gear; 3, with the rails 2 and W, rolls are formed and the stroke length is close to the required rolling conditions. This corresponds to the approximation of the roll radius magnitude to the natural rolling radius, which reduces the axial forces on the workpiece and eliminates the additional slip of the metal in the deformation zone.

Subject invention

Claims (2)

1. The drive rolls of the cold rolling mill tube with a fixed bed, including Mounted in the frame above and below reiks, gears interacting with them, planted on the necks of the rolls, additional rails placed between the gears, and the criszoshino-connecting rod mechanism for moving the lower rails, characterized in that, in order to bring the rolling radius to the natural rolling radius The upper rails are rigidly connected to the drive of the lower rails, and the secondary rails are double-sided and equipped with an additional crank mechanism. 2. The drive according to claim 1, characterized in that, in order to adjust the rolling radius of the rolls, the crank of the full crank crank mechanism is adjustable.