SU654341A1 - Working roll actuating device - Google Patents

Description

cylinder 3. The quill 1 is fitted with a tracking device 4 with a probe 5. The latter is in contact with a screw hole 6 located in housing 7 and rotated by hydraulic booster 8 from niaroBoro engine 9. Commands to stepper motor 9 are outputted by a numerical program device 10.

The device works as follows.

When rolling a non-temporal profile product, the signal from the numerical software device 10 is fed to a stepper motor 9, the rotor of which rotates by an angle proportional to the signal. The booster 8 enhances the torque of the stepper motor 9 and rotates the housing 7, as a result of which the screw stop 6 receives axial movement and acts on the probe 5 of the tracking device 4. The probe 5 of the tracking device 4 is constantly in contact with the screw hole 6 and during the movement of the latter A probe with a quill roller, which is the body of the hydraulic cylinder, moves in accordance with its movement. Simultaneously with the movement of the quill, the roll 2 moves in the radial direction, as a result of which the roll rolls into the tube or is removed under the pressure of the metal of the tube.

In case of installation of several rolls in the working stand, the proposed device allows to automate the process of individual adjustment without stopping the mill. In case of incorrect installation of one of the rolls, the operator moves the screw stop of this roll to the correct position, i.e. before setting it to the same position with the other rolls.

The proposed device, in comparison with the best examples of similar equipment, allows to improve the quality of rolled metal by increasing the accuracy of working the profile with working rolls, as well as to reduce the technological equipment.

The device also allows for automatic individual adjustment of the work rolls in the stand, thereby reducing mill downtime.

The implementation of the device in this way provides a reduction of metal waste into chips, simplifies maintenance and improves the productivity of the mill.

As a result, it becomes possible to reduce rough machining operations and free up maintenance personnel.

The expected economic effect from the use of the invention is 50 thousand rubles. This effect is obtained as a result of calculating metal savings due to the reduction of mechanical processing and labor costs. On the known structures of VNIIMETMASH of hot transverse rolling mills, the rolling accuracy is ± 1.5%. The proposed apparatus provides rolling accuracy of ± 1%, i.e., increased by 30%.

With a mill productivity of 200,000 products per year (up to 1 m and 100 mm long) and an increase in the accuracy of rolled products, 30% of metal savings is 1000 tons, which is 50 rubles at a chip cost. per ton will be 50 thousand rubles.

The expected economic effect can be obtained after the commissioning of the low-waste billet production section.

Claims (1)

Invention Formula A device for moving a work roller mounted on inoles, comprising an actuator made in the form of a hydraulic cylinder, a tracking device with a probe mounted on the cylinder body, and a roll movement control unit, characterized in that, in order to improve the accuracy of the variable profile rolled products, the block the movement control of the roll is made in the form of a numerical program device, a stepper motor connected to a numerical program device, a screw mechanism, the screw of which is installed with interaction with the probe of the tracking device, and the hydraulic booster, installed between the stepper motor and the screw mechanism.