SU963603A1 - Arrangement to four-roll rollers producing cone shells - Google Patents

Description

This disadvantage is particularly pronounced in the manufacture of conical shells from sheets of large thickness (more than 20 mm), as well as c3 metals and alloys with high yield strength, when considerable axial forces occur. In addition, these forces lead to the twisting of the body f even to its destruction. The aim of the invention is to prevent damage to the working surfaces of the U-rolls.

For this purpose, in adapting to the four-roll rollers for the manufacture of conical shells, which has a housing 5 mounted on the upper roll with two cheeks and stops fixed to them, the housing is equipped with self-aligning supports and is made in the form of a ring, freely covering the roll and having four located sym-2p metrically circumferential tide with windows in which self-aligning supports are mounted, and in the middle part of each cheek on the bottom side there is one stop 45 of body rotation around the top it roll, which device is provided.

FIG. 1 shows the proposed fixture mounted on

, upper roll of four rolls; in fig. 2 - section A-A on. figure 1 on an enlarged scale; in fig. 3 is a section BB in FIG. 2

The proposed device includes a housing 1, covering the upper roller 2 of four-roll rollers, with two cheeks limiting the rotation of the housing .1 around the upper roller 2. On the ends of the cheeks 3 of the housing 1 symmetrically with respect to the vertical axis two stops 4 are fixed for the short edge 5 of the workpiece of the conical shell 6 The stops 4 are made removable (not shown), and their working surfaces are made of wear-resistant material.

In accordance with the invention, in the housing 1 of the fixture in the through openings 7 (see Fig. 2) roller bearings 8 are installed for the upper roll 2 of four-roll rollers. Roller supports 8 are located along the edges of the housing and symmetrically relative to the vertical axis of the housing. It is advisable to install four rollers on each edge of the housing 1.

Each roller bearing 8 comprises two uprights 9 rigidly mounted on the housing 1, an axis 10 and a roller 11. The roller 11 (see Fig. 3) is self-aligning. To do this, its holder 12 is mounted on the ball element 13. The rollers 11 pass through the openings 7 of the housing 1 (see Fig. 2) and touch the cylindrical surface of the roll 2 of four-roll rollers.

In order to facilitate the insertion of the tool; on the upper roll of the four-roll rollers, the rollers 11 have lead-in cones 14 (see Fig. 3). Each cheek 3 of the housing 1 has a recess 15 (FIG. 1) in which a roller support is installed. 16 for the lower roll 17 or side bending rolls 18 four-roll rollers, body rotation limiter.

The roller bearings 16 are made by themselves, are installed and have a .VDU design similar to the roller supports 8.. The device works as follows.

To manufacture conical shells from sheet blanks, the device is put on the upper roller 2 of four-roll rollers, in which the side bending rolls are inclined at the fastened angle and lowered to the lower position. At the same time, the device rests on the working surface of the upper roller 2 cheaters by the upper roller 8, one end of the device with stops 4 facing the middle of four-roll rollers ,. and the other end of the abutment rests on the rear fixed column 19 of the roll bed.

Sheet billet, having the form of an annular sector, is introduced into the gap between the upper 2 and lower 17 rollers and clamped. By rotating the drive roller, the workpiece is pulled between the rolls 2 and 17 to touch the front edge of the workpiece of the side bending roll 18. After this, the side bending rolls 18 are gradually lifted and the workpiece is rolled back and forth, the conical shell 6 is short. 5 of the sheet blank rests either into one or the other stop 4 depending on the direction of movement of the workpiece, and the housing 1. of the pc1 device spins on the upper roll 2 of four-roll rollers and the size of the gaps between the roller 2 and the roller supports 8. If the workpiece rests on the right support 4 (see Fig. 2), the body 1 rests on the roller 2 with two left front and two right rear roller supports 8, as well as the lower roller 17 left roller bearing 16. If the workpiece rests on the left stop 4, body 1 is supported on roller 2 by two right front and two left rear roller 8, as well as on the lower roller 17 by right roller bearing 16.

Claims (2)

Depending on the size of the conical shell and the position of the side bending rolls 18 in height, the body 1 can be supported by one of its roller supports 16 on one of the side bending rolls 18. In all cases, the rollers 11 of the roller carriages 8 and 16 occupy a position parallel to the axis of the rollers 2 , 17 and 18 thanks to the fact that their clips 12 can be self-mounted on the spherical elements 13. The proposed adaptation to four-roll rollers for making conical shells makes it possible to eliminate mechanical damage to the working surfaces of the rolls of four roll rollers due to the fact that it rests on rolls with roller bearings. Eliminating wear of the rolls and the body of the fixture keeps the gap between the rolls and roller bearings constant. This ensures equal distribution of loads on the fixture elements, and allows to increase the reliability of the fixture, as well as expands its technological capabilities, as with the help of this Fixture it is possible to roll conic shells of thick, thick sheets (up to 60 mm),. as well as from steels and alloys with a high yield strength. The invention The device for four-roll rollers for making conical shells, contains a case with two cheeks installed on the upper roll and has stops attached to them, which means that in order to avoid damage to the working surfaces of the rolls, the case is equipped with self-aligning supports and the form of a ring that freely covers the swath and has four tides arranged symmetrically around the circumference with windows in which the self-aligning supports are mounted, and in the middle part of each ki from the bottom side is mounted on one of the body rotation stop around the upper roll, which is equipped with a device. Sources of information taken into account in the examination 1.Patent of Germany 1917219, cl. In 21 D 5/14, published .. 03.04 69. 2. Information sheet of the Gorky inter-sectoral territorial center of scientific information and propaganda, (prototype). W //////. fff ff one ,