SU1288981A1 - Method and apparatus for adjusting rolling-mill rolls - Google Patents

Abstract

The invention relates to rolling production and can be used to set up and control the coaxiality of the mill rolls with closed calibration. The purpose of the invention is to improve the accuracy and reduce the complexity of the settings. The method includes setting the mill axis with a laser beam, installing a template with a sighting element into the caliber of the rolls and monitoring with the help of the template of the roll position. When installing, the template is deformed in the caliber of the rolls by mixing and compressing its ellastic elements along the rolling axis. A device that implements the method consists of a laser and a template with a sighting element. The template consists of two elastic truncated cones mounted on a / rigid sleeve with the possibility of their mutual axial movement. Replaceable sighting elements are installed in the cavity of the sleeve. 2 sp.f-ly, 3 Il. and G HS (X) cx cx cx

Description

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The invention relates to rolling production and can be used to tune and control the alignment of rolls, in mills with closed gauges, for example, reduction and gauge mills.

The aim of the invention is to improve the accuracy and reduce the complexity of setting rolls.

Figure 1 shows the scheme for implementing the method for adjusting the rolls of a rolling mill; Fig, 2 - the proposed device, the section; in FIG. 3, view A in FIG. 2

The proposed device consists of an I9 laser 1, which is installed on the inlet side of the rolling float so that its beam passes through the axis of mill BB, i.e. through the caliber of rolls 2. Shablon 3 with the element A sighting yak-repleni in the caliber of the rolls of the mill. It consists of two trimmed cones 5, Made of an elastic material, and a sleeve 6, on the one side of the collar, and on the other - cutting. BA A press nut 7 is installed on the cutting side of the sleeve. A sighting element is installed inside the sleeve.

Depending on the required tuning accuracy of the mill rolls, the sighting element 4 may have a different design. If accuracy above 0.5 mm is not required and there is free access to the gauges of the rolls, then a solid rod can be used as sighting elements, at the end of which its center is marked with a cross-hair with a system of concentric circles. When the design of the mill makes it difficult to observe the sighting element or to provide

The accuracy of control is ± 0.1 mm. A repulsive light guide is used as this element, one end of which is installed in the cavity of the sleeve and it perceives a light beam, and through the other end it is observed outside the mill for aligning the center of the light beam with the center of the light guide. . Observation can be made through the ocular p or recorded by a photoelectric sensor.

The adjustment of the shafts is as follows.

Laser 1 is installed from the entrance side of the mill so that the beam passes through the axis of the mill, B is controlled by a pair of rolls 2 set Shabto

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For this purpose, a metal sleeve 6 with a pre-worn elastic cone 5 is inserted into the roll gauge from the laser 1 side until the cone part of the elastic cone touches the roll gauge surface. Then, on the other side of the gauge, the second elastic cone is put on the sleeve and the pressure nut 7, wrapping it on the Metal sleeve, move the elastic cones in the axial direction. When moving, they are deformed, filling the cavity of the caliber and repeating its shape. After tightening the nut 7 into the screw cavity, the element A is installed in the opposite direction to the laser beam and the position of the roll gauge relative to the mill axis is determined by the deflection of the center of the light beam from the center of the element. If necessary, the viewing element is aligned with the beam using the adjusting mechanism of the rolls.

To adjust the pair of rolls, the element 4 is removed from the cavity of the sleeve 6, the template is dismantled and installed; cast it in the following caliber.

The proposed method and device for adjusting the rolls of rolling mills underwent laboratory tests at the Ural-NITI and industrial tests at the Moscow Tube Works, where their implementation was planned. The template is made to customize the WRS-300 mill, which produces pipes with a diameter of 10 to 30 mm,

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and has the following dimensions: the outer diameter of the hollow sleeve is 9 mm, its length is 120 mm, the smaller and larger diameters of the truncated cones are 36 and 60 mm, their length is 45 mm. The cones are made of polyurethane SKU-PFL. As a sighting element, a regular light guide with a diameter of 6 mm and a length of 700 mm is used. An ocular with a crosshair is installed at the output end of the fiber to observe the alignment of the center of the fiber with the center of the light beam. The device uses a LGN-105 laser mounted on an adjustable base.

This device improves accuracy and reduces the complexity of the setup by eliminating the dismantling of the lower rolls. The device is universal. suitable for setting up any mills with closed calibers (reduction, calibration, profile), regardless of the size of the gauges and the density of the stand arrangement.

In addition, it provides high tuning accuracy by eliminating the Offset of the lower roll when mounting the top roll.

Claims (2)

1. A method for adjusting the rolls of a rolling mill, including the task of positioning the mill axis with a laser beam, installing a template with an element of sight into the caliber of rolls and controlling with a template of the position of the rolls, characterized in that, in order to increase the accuracy and reduce the complexity of the settings, use an elastic template which is subjected to defor in the direction of the axis of the nation, become a template of the size and size of the caliber, 2. A device for adjusting the rolls of a rolling mill containing a laser and a template with a sighting element, which is mainly because, in order to increase accuracy and reduce the labor intensity of the adjustment, the template is made in the form of a rigid sleeve and two elastic, truncated cones reversed each other with smaller bases and mounted on the sleeve coaxially with the possibility of mutual axial movement, and the sighting element is installed in the sleeve. fj} ue.i 2 did fzg