SU1734903A1 - Arrangement for deforming metal by rolling - Google Patents

Description

The invention relates to rolling production and can be used to produce rational blanks, including varietal and shaped profiles, rings, blanks for parts of rotation bodies such as shafts and axles in the blanking productions of machine-building enterprises.

The purpose of the invention is to expand the technological capabilities of the device and reduce the composition of the technological equipment by transforming it.

FIG. 1 shows the device, a general view; in fig. 2 is a diagram of the rolling of a section bar; in fig. 3 - the device in the ring rolling mode; in fig. 4 - scheme of rolling rings; in fig. 5 - the device in the mode of operation of the cross-wedge rolling stand; in fig. 6 shows a rolling scheme for billets of the type of rotation bodies.

The device comprises a frame 1 consisting of two vertical posts 2, an upper 3 and a lower 4 crossbars. In the windows of the uprights 2 in the pillows 5, the bearings 6 of the rolls and the deforming rolls 7 are mounted. The rolls 7 are connected to the coupling and the drive of the rolls (not shown) by their output end with the help of the key 8. As a drive of the device, any scheme can be used, for example, a motor - a gearbox - a gear cage - a universal spindle - a deforming roller. To adjust the position of the upper deforming roller 7, pressure screws 9, an equilibration mechanism 10 and an axial adjustment mechanism 11 are provided. Guides 12 are installed in the lower cross member 4 of the base 1, which are installed with reciprocating movement perpendicular to the axis of the roller 7 bearing plate 13.

For the case of rolling rings (Fig. 3), the device is equipped with a replaceable transfer roller 14 mounted in the cushion 5 and bearings 6. The output end of the shaft 14 by the key 8 is connected to the coupling and drive (not indicated), at the other end of the shaft 14 the gear wheel 15 is mounted. A removable gear rail 16, meshed with the gear wheel 15, and means for mounting and fixing the tool in the form of a frame 17 are mounted on the carrier plate 13. An internal deforming roller 19 is installed in the slots 18 of the frame 17.

For rolling the tg-type of rotation bodies, the device, mounted on frame 17 and bearings 20 of two interchangeable deforming rolls 21, is additionally equipped with another rack pair, and gears 22 which engage with rack 23 fixed on cross bar 4, is attached to the output ends of the interchangeable deforming rolls 21.

The device works as follows.

For rolling graded or shaped

The profiles of the device are mounted according to FIG. 1. Both deforming rollers 7 are connected to a drive (not specified). In the rollers 7, the corresponding calibers are pre-cut, the desired profile is rolled from the blank 24 according to the rolling pattern shown in FIG. 2

For rolling rings, the cage is assembled according to FIG. 3. In this case with a drive (not

5, the upper roller 7 and the transmission shaft 14 are connected. To limit the stroke of the carrier plate 13, a limit switch can be installed and the drive is provided with, for example, an electromagnetic clutch (not shown). A plate 16, a frame 17 and a replaceable inner non-driving deforming roller 19 with the original workpiece 25 are mounted on the plate 13. 14 and the rack pair in the direction of the roll 7 and is deformed, thus reducing its cross section and increasing

0 ring diameter. The roller 7 can be made bandaged with cutting of the corresponding calibers on the bandages, and on the roller 19 it is advisable to cut only one caliber for the rolling of one size

5 rings

For rolling parts such as bodies of revolution, the device is assembled according to FIG. 5. An upper roller 7 and a transfer roller 14 are connected with a drive (not indicated). A rail 16, a frame 17 with two deforming rollers 21, and a fixed rail 23 are rigidly fixed to the supporting plate 13 and fixed to the lower cross bar 4. the rolls 21 are transferred due to their translational movement from the toothed rack 23 and the same gear wheels mounted on the output ends of the rolls 21. When the drive is turned on (Fig. 6), the workpiece 26 together with the rolls 21, frame 17 and plate 13 moves

0 in the direction of the roll 7 and is deformed, the diameter of the workpiece 26 decreases, the shape of the rolls 21 and 7 is shaped to the workpiece, and its length increases.

5 Cleaning of rolled billets (for cases of rolling rings and rotating bodies) is carried out after the plate 13c frame 17 and the lower interchangeable deforming tool reaches its extreme position, with the limit switch

disable roll rotation. The rolled stock is removed, a new stock is loaded, the drive is switched to reverse and the entire rolling cycle is repeated in the opposite direction.

Example. The proposed device was used for rolling varietal and shaped profiles with a cross section of 150-400 mm2 according to the longitudinal rolling scheme, rings with a diameter of 120-280 mm and a cross section of 200-450 mm, parts like rotary bodies with a differential diameter from 12 to 28 mm with a total length blanks up to 160 mm. At the same time, all parameters of rolled bars, rings and rollers corresponded to the technical conditions for hot rolled products, namely: deviations from the nominal cross-sectional dimensions of the rolled profiles did not exceed ± 0.42 mm; the diameters of the rolled rings from -0.86 to +0.95 mm, and the macrostructure of the rolled blanks did not undergo any noticeable changes as compared with the macrostructure of the blanks rolled in specialized mills. To roll the entire assortment of rational blanks, one stand with a universal drive and a set of replaceable tools was required. The area occupied by the rolling stock was 20 m2.

Thus, the proposed technical solution allows to expand the technological capabilities of the device, to reduce the composition of the equipment

the engineering site of the machine-building enterprise.

Claims (2)

1. A device for deforming metal by rolling, comprising a frame of two vertical posts with windows, an upper and lower cross member, placed in the windows of a pillow frame with at least one deforming roller, mechanisms for adjusting the position of the roll and driving it to rotate, characterized in that the purpose of expanding the technological capabilities of the device and reducing the composition of the equipment by transforming it, it is equipped with a removable deforming tool placed on the lower crossbar by guides installed in them with zmozhnostyu reciprocating movement perpendicular to the axis of the roll supporting plate, fixing means removable deforming tool and a removable rack mounted on the upper surface of said plate and installed in the pad drive shaft with a pinion cooperating with the rack. 2. Device pop. 1, with the fact that, in order to further expand technological capabilities through the use of a driven replacement tool, it is additionally equipped with another rack pair, the rail of which is rigidly fixed on the bottom cross member, and the gear wheel on the replaceable tool. hch FIG. g 4E Cxj with o o T co ron S iD VS r 1SE P fs / J / 7 Я7 n FIG. five 26 FIG. 6 21 rfrf eleven 21 W;, 73 75 7J