SU1079319A1 - Box for idle rolls of stand with multiroll pass - Google Patents

Abstract

1. A CASSETTE FOR NON-NON-WATER BEAMS CET-AND WITH A MULTIPLE 1M CALIBER, containing a cassette case fixed on a duo stand, in which non-drive rolls are formed, forming with a horizontal drive rolls of the stand a multi-angle adjustment of the gauge, and also a non-drive roll adjustment mechanism, which has non-drive rolls. that, in order to improve the accuracy and quality of rolling of shaped tubes, as well as to simplify the setting of multi-roll gauges, the cassette case is made of two cylinders, installed with the axis of rolling and JCOMM fixed respectively on front and rear prokatnoy.kleti, non-driven rollers are installed in the cushions in the form of a traverse, supported on the inner surface of the cylinder and mounted for circular movement therein and rigid fixation. i 2. The cassette according to claim 1, so that, in order to ensure (For the annular movement of the pillows in the inside of the cylinders, the cylinders are made with open l and grooves with one-sided serrated cutting and are fitted with the packs are holders with gears that interact with the serrated cutting of the corresponding groove, while the gododushki are provided with sides with with protrusions placed in the holders.

Description

The invention relates to the ferrous and nonferrous metallurgy industries, in particular, to rolling equipment, and can be used for rolling shaped programs in multi-roll calibers. Known design of a cassette for non-driving rolls of a multi-roll gauge cage consisting of a cassette body fixed between the lower and upper monolithic U-shaped stand blocks, pillows of non-driving rolls, C 1 pushing and balancing devices. The main drawback of the known cassette is vertical the location of non-driven wapes, which in most cases when rolling layered shaped pre-loops leads to the position of the axes of the non-driven rolls at an angle to the deformable sections of the shaped Kata and the emergence of large axial forces on the non-drive rolls. In addition, the cassette structures do not provide for the possibility of axial adjustment of the non-drive rolls, which during rolling does not compensate for the axial play of the rolls from the action of axial rolling forces and thus does not provide high accuracy and quality of rolling. A well-known cassette for non-powered rolls of a stand with a multi-roll caliber, containing a cassette case fixed on Jyo glue, in which non-driven rolls are placed, forming a horizontal adjustment caliber with horizontal horizontal drives, as well as fyisMatW adjustments non-driving rollers 2. The main disadvantage of the known cassette is the vertical position of non-driven vapkas, which in most achuchais when rolling complex shaped prostrations leads to the location of the axles of non-driving vapki at an angle to the deformed F1F sections of rolled sections and the occurrence of large axial forces on the non-driven rolls. The axial and radial clearances of the vertical non-drive rolls that occur when rolling in a known cassette are compensated for by the axial and at the same time radial adjustment of the rolls. However, this is a very laborious process, which significantly complicates the adjustment of multi-roll gauges and does not provide vysyuyu rolling accuracy. In addition, the known design of the cassette case during cassette changeovers does not preserve the adjustment of the horizontal rolls, which complicates the process of reloading the cassette and the subsequent adjustment of the multi-roll gauge. The closest to the invention is a cassette for non-powered rolls of a multi-roll stand, containing a cassette case fixed to the duo stand, in which the non-drive rolls forming a multi-roll adjustable caliber with horizontal drive rolls of the stand, and also equipped with mechanisms for adjusting non-drive rolls G 3 . The flat design of the cassette case causes vertical placement of non-driving rolls, which in most cases, for example, when rough rolling channels with bent shelves in a four-roll caliber, controlling the widths of the shelves of the corner profile in a four-roll caliber or controlling the heights of the cross-shaped flanges in a six-roll caliber, results in significant axial forces on the rolls, and, consequently, to large axial backlash of the rolls, which must be compensated for by the corresponding axial and radial adjustment tapes and rolls. However, it is necessary to simultaneously perform axial and radial adjustment of non-driven; The vertical rolls in a known cassette complicate the process of adjusting the non-driving rolls of a multi-roll caliber. This does not provide a high accuracy setting of the caliber, and accordingly the accuracy of rolling in it. In addition, when there is an angle between the axis of the non-driving roll and the deformable section of the rolled steel, the compression is performed by conical parts of the non-driven rolls having irregular circumferential speeds along the generatrix of the cone, which increases the wear of the working surface of the rolls and, as a result, reduces the quality of the rolled surface. Therefore, when rolling shaped profiles in multi-roll calibers, it is advisable to place non-driven rolls opposite the deformable rolled sections. This eliminates axial loads on the drive rolls with cylindrical working surfaces, for which, in the absence of axial loads, axial adjustment is not necessary. In this case, the accuracy of adjusting the non-driving rolls of multi-roll gauges is greatly simplified, and therefore the rolling accuracy is improved. In addition, rolls with a cylindrical working surface, compared with tapered rollers, do not have uneven peripheral speeds along the forming surface of the roll, which means less wear and higher quality of the rolled surface. The purpose of the invention is to show the accuracy and quality of rolling shaped profiles, as well as to simplify the setting of multi-roll gauges. This goal is achieved by the fact that in a cassette for non-driven rolls of a multi-roll stand, containing a cassette case fixed on a duo stand, in which non-drive rolls are arranged, forming a multi-roll adjustable caliber with horizontal rollers of adhesives and also equipped with mechanisms for adjusting non-drive rolls, the cassette case made of two cylinders mounted coaxially with the axis of rolling and rigidly fixed 1x 1x respectively at the front and rear of the rolling stand, the windrow rolls are installed in aircrafts in the form of cross-beams, supported from the inner surface of the cylinders and installed with the possibility of circular movement inside them and rigid fixation. In addition, the cylinders are made with circumferential grooves with one-sided cutting and are fitted with holders with gears installed in these grooves that interact with the toothed cutting of the corresponding groove, while the cushions are provided with lateral projections placed in the holders. FIG. 1 shows a duo stand with a cylindrical cassette for non-driving rolls, front view; on fkg., 2 - section aa in fig. one ; in fig. 3 is a section BB in FIG. 1, a cylindrical cassette; in fig. 4 194 section bb In FIG. 3; in fig. 5, view G in FIG. four; in fig. 6-8 - multi-roll calibers formed by non-driving rollers mounted vertically; in fig. 9-11 - the same, formed by non-driven rollers, installed against deformable sections of rolled products. The cassette consists of a housing made in the form of two cylinders 1, which are rigidly fixed by nuts 2 in front and behind on the beds 3 of the rolling stand (Fig.). The cylinders 1 are mounted on a cage coaxially with the rolling axis. For starting horizontal rolls 4, longitudinal U-shaped notches 5 are made in the cylinders 1 from above and below. Inside the cylinders 1 pillows 6 with non-driven rollers 7 are made longitudinally, made in the form of cross-arms (Fig. 2). At the same time, for the radial adjustment of the non-drive rolls 7, pressure screws 8 are installed on the sides in the supports 6, the cylindrical heads 9 of which rest on the inner surface of the cylinders 1, and for rotating the pressure screws B the shanks 10 of the pressure bands B are pulled out of the cylinders 1 through cylindrical grooves 11 , made in cylinders 1 (Fig. C). Circuits 6 with non-driving rollers 7 are made with side projections I2, which are mounted on a sliding fit in the radial grooves 13 of the guide holders 14, which allows the non-driving rollers 7 to be radially moved. Inside the side projections 12 there is a balancing device consisting of a spring 15 and a finger 16 resting on the inner surface of the radial groove 13 of the guide holder 14 (Fig. 3). The rigid fastening of the guide holders 14 inside the cylinders 1 is carried out by bolts 17 passing through the cylindrical grooves 18 in the housings. For the possibility of annular movement of the holders 14, together with the cushions 6 and the non-driving rollers 7 inside the cylinders 1, an axle 19 is mounted into the holder 14, on which gear 20 is mounted, placed inside the cylindrical groove 18 (Fig. 4). At the same time, on one side of the groove 18, a serrated cut 21 is made, with which gear 20 interacts (Fig. 5). A removable cassette is assembled as follows. After installation in the cage drive horizontal rolls 4 front and rear of the rolling stand on the bed 3 coaxially with the axis of the rolling set with cylinders 1 and rigidly fixed nuts 2. Then pillows 6 with non-driven rolls 7 and twisted pressure screws 8 are installed longitudinally inside cylinders 1, and The tailings 10 of the pressure screws 8 are passed through the cylindrical grooves 11 to the outside of the cylinders 1. In the side projections 1 2 of the pillows 6, springs 15 and fingers I6 are installed. Then the fingers 16 are recessed, and the guide holders 1 4 are put on the side rectangular projections 12. Gear sleeves of cylinders 1 are fitted with gears 20 into cylindrical grooves 18 with one-sided serrated 2, through axial holes in which axles 19 are threaded and screwed into holders 14. Holders 14 are rigidly fixed inside cylinders 1 with bolts 17. After assembling the cassette for rolling a specific profile Multi-roll gauge presetting is performed. To do this, the rotation of the gears 20 makes an annular movement of the holders 14 with cushions 6 and non-driving rollers 1. In this case, the cylindrical non-driving rollers 7 are mounted directly opposite the deformed rolling sections, after which the holders 14 are fixed firmly with bolts 17 inside the cylinders 1, and by turning :: the shanks 10 pressure screws 8 carry out the radial installation of the water-free rolls 7. The rolling mill with a multi-roll caliber works in the following way. The strip, which is set in the cage, engages horizontal Driving rollers 4 are passed through a deformation center (mations where the side contours of the shaped log are pressed by non-driven rollers 7 installed opposite the deformable sections of the roll. At the same time, the forces of the metal on the non-water rollers 7 are directed perpendicular to the axis of the rolls 7 and cause only radial displacement of the rolls 7 due to the spring of the cassette parts. To compensate for the radial displacement of the non-driving rolls 7 caused by the rolling forces, the pressure screws 8 are moved in the radial direction to the center of the cushion cassette 6 with unconnected Water rolls 7 and vosstanvlivayut required dimensions caliber. The cylindrical configuration of the cassette case 1 and the design of the guide holders 14, which provide for the annular movement of the cassette non-driven rollers 7, allow the non-driving rollers 7 to be placed directly opposite the deformable sections of rolled products (Fig. 911) and eliminate the axial loads on the rollers 7 that occur during vertical arrangement of non-driving rolls (Fig. 6-8), and therefore, the axial displacement of the rolls during rolling. Due to this, when adjusting multi-roll gauges in the process of rolling, the non-driving rolls 7 in the cassette can only be moved in the radial direction, compensating for their radial displacement. This determines the advantages of the proposed cassette, in which, when rolling, it is sufficient that the adjustment of the multi-roll caliber is carried out only by the radial movement of the non-drive rolls, which greatly simplifies the laboriousness of setting up the multi-roll calibers, increases the accuracy of the adjustment of the calibers and, accordingly, rolling. In addition, the installation of rolls against deformed rental sections provides the possibility of using non-driven rolls with a cylindrical surface, which, compared with conical rolls, have no uneven circumferential speeds along the forming working surface of the roll, which means less wear and higher quality of the rolled surface. The simplicity and accuracy of setting up multi-roll calibers created with this cassette speeds up the setting of multi-roll calibers by 2-3 times, improves rolling accuracy and quality by 10-15%. The use of such cassettes in the production of complex shaped profiles improves the accuracy and quality of rolling in multi-roll calibers, which ensures a rapid expansion of the assortment and volume of production of complex shaped profiles of rolled products, the use of which provides an economical effect of about 500 p / t. f4

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Claims (2)

1. CARTRIDGE FOR NON-DRIVING CRUSHES WITH A MULTI-ROLL CALIBER, comprising a cassette body fixed to a duo stand, in which non-drive rolls are placed, forming a multi-roll adjustable caliber with horizontal drive rolls, and also equipped with adjustment mechanisms for non-drive rolls, characterized in that , in order to improve the accuracy and quality of rolling of shaped sections, as well as simplify the setting of multi-roll calibers, the cassette body is made of two cylinders mounted coaxially with the rolling axis and rigidly on the front and rear rolling brackets, respectively, mounted, non-drive rolls are installed in the pillows in the form of traverses, resting on the inner surface of the cylinders and installed with the possibility of circular movement inside them and rigid fixation. 2. Cassette on π. 1, because of the fact that, in order to ensure annular movement of the pillows inside the cylinders, the cylinders are made with circumferential grooves with one-sided gear cutting and are equipped with gear holders mounted in these grooves that interact with serrated cutting of the corresponding groove, with the pillows provided with a side! ledges posted! in the holders.