SU770627A1 - Apparatus for expanding rings - Google Patents

Description

(54) DEVICE FOR RINGING THE RINGS

one

The invention relates to the field of metal forming and can be used in the manufacture of rings.

Known koltseraskattsy mill containing a frame with fixed stationary in the process of rolling the internal idle roll, the support roller and the drive pressure roller I.

Its disadvantage is that the support roller does not move during the rolling process, which limits the degree of deformation of the ring stock in one installation.

The closest technical solution of the known ones is a ring-rolling device with a stationary outer roller, an idle support roller and an inner pressure roller mounted on a carriage, which form a working gauge 2 between them.

The disadvantage of this device lies in the cumbersome design of the support roller and the complexity of setting up and controlling the mill.

The purpose of the present invention is to simplify the design, to facilitate the setting and operation of the device for rolling rings.

This goal is achieved in that the device is provided with a housing mounted on the frame rotatably around the axis of the outer roll with guides, the carriage is mounted for movement along the guides, and the idle support roller is fixed in the frame at the output of the working gauge.

This embodiment of the device allows the inner work roll mounted on the carriage to be able to follow the lateral displacements of the ring arising under the action of the lateral component

j pressure rolling. Due to this, the inner work roll is self-aligning in the horizontal plane. Under such conditions, of course, there is no need to control and regulate lateral displacements of the ring itself, i.e. there is no need for drives of the centering rollers, and the rollers themselves can be installed stationary. Moreover, it appears that only one m can be limited to a stationary support roller. The function of the WTO support roller is performed by the outer work roll.

FIG. 1 shows a device for rolling rings; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. 2; in fig. 4 shows a section B-B in FIG. 3

The device for rolling rings contains a bed 1, a stationary outer work roll 2, the axis 3 of which is installed in the bore 4 of the bed. On the bed tide 5, the frame 6 is mounted through bearings, and its axis of rotation coincides with the axis of rotation of the outer work roll 2. In the guides 7 of the housing 6, a carriage 8 is mounted with an inner work roll 9 mounted on it. Guides 7 made in the housing 6, provide the carriage 8 with the possibility of reciprocating movement under the action of a pressure mechanism 10 mounted on the housing 6. For this, the carriage 8 is made with guides 11 mated to the guides 7 of the housing 6. On the output side of the working gauge Formed by the rollers and the supporting roller stand stationarily mounted in the supporting roller 12. To provide carriage assembly with the housing 8 b s.odnogo end of the carriage cover 13 is provided mounted on the carriage housing 14 fastening.

The device for rolling rings works as follows.

An annular billet 15 is loaded between an outer roller 2 and an inner roller 9 mounted on a carriage 8, which under the action of a pressure mechanism 10 moves in the guides 7 of the housing 6 towards the outer roller 2. As a result, the annular billet 15 is clamped between the rotating outer and inner rolls. The rolling process begins and the lateral component of the rolling pressure appears, tending to turn the ring billet 15 and the inner roll 9 around the axis 3 of the outer roll 2 in the direction of its rotation. The housing 6, and with it the carriage 8 with the inner roller 9 installed therein, rotates around the axis 3 of the outer roller 2 until the ring stock is pressed against the support roller 12 and takes a stable position that is maintained during the whole process rolling out. As rolling

the diameter of the ring grows and its center moves all the time. The inner roller 9 spontaneously takes up such a position that its axis is constantly on the line connecting the center of the rolled workpiece 15 and the axis of the outer roller 2. After the end of the rolling, the carriage 8 with the inner roller 9 is retracted from the outer roller 2 by pressing a lot mechanism 10 and remove the finished ring.

Reducing the number of support-centering rollers to one and eliminating their drives greatly simplifies the design of the device for rolling rings. This is reflected in the fact that, depending on the type of mill and the size of the rolled rings, the weight of the mill is reduced.

Electricity is saved by eliminating the electrical equipment of the drives of the disputed centering rollers.

The exclusion from the equipment of the device of the drives of the support-centering rollers with the system of their automatic operation, the reduction in the number of these rollers to one leads to a decrease in the equipment's equipment and to ease its operating conditions.

Claims (2)

1.Lazutin V.I. and others. Constructive and technological features of ring rolling machines. Scientific and technical sat. “Bearing industry. issue 3M. “5 NIINAvtoprom, 1970, p. 17. fig. 21. 2. USSR author's certificate number 578146, cl. B 21 H 1/06, 1975. -n phage. g -13 ig.Z