SU810348A1 - Method and apparatus for production of shaped rings - Google Patents

Description

driven by motor 3 through gear 4, pushing the inner radial work roll 5 mounted in the drive 6, which is equipped with a horizontal power hydraulic cylinder 7 relative to the outer roll 2, glasses 8, driven end rolls 9 driven by the motors 10 through rotation transfer 11. The bed is equipped with a power cylinder 12 for moving it in the radial rolling plane (BB). Both end rolls are mounted in cassettes 13 n and are movable in a vertical plane, for which they are enclosed in supports 14, which are provided with power hydraulic cylinders 15 for moving them together with end rolls. At the same time, in order to immobilize the rotation of the end rolls in the plane (AA), perpendicular to the plane of the rolled ring (BB), both end rolls (or one of them) are mounted in slide plates 14 and are equipped with power hydraulic cylinders 16.

The proposed method is carried out as follows. The workpiece 17 is served in the proposed device. Under the action of the hydraulic cylinder 12, the bed 8 with end rolls 9 is brought to the workpiece 17. At the same time, under the action of the power hydraulic cylinders 16, both end rolls are mounted in a plane perpendicular to the plane of the rolled ring so that their longitudinal axes are parallel to the radial plane of the rolled ring (BB). Then, under the action of hydraulic cylinders 15, the upper and lower supports 14 with end rolls 9 move in a vertical plane until they come into contact with the workpiece (Fig. 2, a). Subsequently, the cross-section profile of the ring is started by inserting the end rolls 9 into the workpiece (see Fig. 2.6). With this position, the end rolls 9 are deformed to obtain the required height / g of the flange. Here, the workpiece 17 is driven into rotation by the driven outer roller 2 and the end rolls 9.

To obtain a predetermined configuration of the cross section of the ring (for example, with a wide shelf along the inner surface), the end rolls 9 are powered by hydraulic cylinders 16 around the hinge.

The rotation is carried out before establishing a parallelism between the forming end rolls (see Fig. 2, e). Having thus performed the cross-sectional profile along the inner surface of the workpiece 17, the workpiece is further distributed to obtain a given diameter (see Fig. 2, d) by deforming it in the radial plane of the rolled ring (BB) between the outer driving work roll 2 and the inward pressure roller 3 due to the movement of the latter caliper 6 under the action of the power cylinder 7.

If it is necessary to obtain rings with a profile made on the end faces, the deformation process is carried out by end rolls, the longitudinal axes of which are set at the required angle

to the plane of the rolled ring. For example, if it is necessary to obtain a profile with a complex longitudinal section (see Fig. 2.6), further deformation is stopped and the workpiece 17 is removed from

devices.

When producing the core rings, the deformation of the blank 17 is carried out with a sequential change in the position of the end rolls 9 in the plane (AA), which is perpendicular to the radial plane of the rolled ring (BB). The position of the end rolls during the deformation process is determined by the final cross-sectional shape of the rolled product. The process of deformation of the workpiece at different stages

can be done by one or both

end rolls (see Fig. 3, a, b, or

c, d)

Example. For making rings with

A wide flange of the inner surface (a crown for the pinion) with an outer diameter of mm, an inner diameter of mm, a height of mm, a thickness of mm, a thickness of a shelf of mm and a flange of a shelf of mm was used an annular workpiece of a rectangular cross-section with an outer diameter of DR 600 mm and height // 140 mm. Rolling was carried out at a linear speed of 2 m / s. The force from the end rolls ranges from 15 to 90 tons as the contact surface area increases. End rolls, the longitudinal axes of which were set parallel to the radial plane of the rolled ring, carried out deformation of the workpiece to obtain the height of the flange h equal to 40 mm at its base. Then made a uniform turn.

end rolls before establishing parallelism between the forming end rolls and the radial plane of the rolled billet. Thereby, a directed outflow of metal into the inner part of the workpiece was ensured in order to obtain a predetermined shelf width mm. After obtaining a given profile along the inner surface, the workpiece was distributed in diameter with a force of radial deformation of 95 tons, carried out by a pressure inner roller under the action of a power hydraulic cylinder.

As a result, a profile ring was obtained with the indicated dimensions within the minimum tolerances for machining (± 1% by the size of the outer and inner diameters and +2 mm for the remaining profile elements).

Thus, the application of the proposed method with a device for its implementation allows to expand the technological capabilities by ensuring the release of rings with a complex cross-sectional profile.

Claims (2)

1. A method of manufacturing core rings by rolling an annular billet between the outer and inner rollers with application of a radial deformation force and application of additional force to the ends of the rolled billet with two end rollers, characterized in that, in order to enable the manufacture of rings of complex configuration, for example flange, the force applied to the ends of the blanks to be rolled up is changed by turning the end rolls relative to the end surfaces of the blank. 2. An apparatus for carrying out the method according to claim 1, comprising inner and outer radial work rolls, two end tapered rollers mounted on a frame with the possibility of relative relative movement in the radial and axial directions, respectively, characterized in that at least one of end bevel rolls are installed with the possibility of swinging around a point located on the axis of this roll in the direction of the other end roll. Sources of information taken into account in the examination 1. Production of precision blanks of machine-building parts by rolling. Collection NIIINFORMTYAZHMASH, 7-67. M., 1968, p. 167. 2. USSR author's certificate number 650485, cl. B 21N 1/06, 09.05.72. four -with h-h:  h t m "J well i