SU946749A1 - Tool for cold rolling of ring articles - Google Patents

Description

(54) TOOL FOR COLD ROLLING RING.

.. NZDEL11P

The invention relates to the processing of metals by pressure and can be used in the manufacture of outer rings of bearings.

A known tool for cold rolling ring products, comprising a drive inner core roll, a matrix fixed rigidly in a housing that can be rotated, and end supports, one of which is spring-loaded in the axial direction, and the other connected through a rod to the piston of the force cylinder f1.

The disadvantage of this tool is that the rolling ring cannot be extruded from the die until the inner roll is removed, which leads to a decrease in labor productivity. In addition, the workpiece is not accurately fixed in the axial direction, which leads to low accuracy of the product.

The purpose of the invention is to increase productivity and improve product quality.

This goal is achieved by the fact that in the tool for cold rolling of ring products containing a driven inner hydrographic unit

a roll, a matrix fixed rigidly in a housing that can be rotated, and end supports, one of which is spring-loaded in the axial direction, and the other is connected through a rod to the piston of the power cylinder, the housing is made with an annular cavity and outgoing holes from it the piston is set to

10 of this cavity, and the rods in the axial holes, the end support associated with the piston of the power cylinder, is spring-loaded, and inside the housing are installed coaxially with the end supports

15, the thrust elements, and the distance between each end support and the thrust element is half the width of the annular product.

- At the same time on the case is installed

20 is a fluid supply member associated with the annular cavity.

FIG. Figure 1 shows the tool after centering the workpiece; in fig. 2 shows the arrangement of the matrix with respect to the profile of the rolled roller after rolling in FIG. 3 - vypressovka rolled ring product.

The tool consists of a body 1 (Fig. 1). In the housing 1 there is a col 30 cavity, in which is installed

a hydraulic cylinder, a piston 2, the rods 3 of which pass through the through axial holes of the housing 1 and connect it with the faceplate 4, which is a stop element and abutting the housing 1 against the side B. The face bearing 5 is installed in the axial direction of the axial direction. The axial -1 direction of the end support 6 is mounted in a thrust sleeve 7 that abuts the working position in the annular ledge B of the housing 1 and mounted on bearings 8, which are mounted in the glass 9. The end supports 5 and 6 are preloaded by spring washers 10 and limited by the end face of the face 4 and nut 11. The end support b is limited by the side b of the thrust sleeve 7 and the stop element 12 fixed by the nut 13. The displacement S of each end support is equal to half of the broadening of the annular product when rolled ke. The matrix 14 is rigidly fixed in the housing 1. The matrix 14 and the inner shaping roller 15 constitute a caliber. The tool works as follows. The left end of the bearing is retracted to the left of the sieve 16 to its original position (Fig. 3). The workpiece 17 is inserted into the matrix 14. The left end support moves to the right in direction of arrow 18 until the stop sleeve 7 stops against the body 1. .. The end supports 5 and 6, preloaded with spring washers 10, center the workpiece 17 relative to the inner core roll 15 Body 1 and the inner roller 15 rotate the device from the actuator (not shown) and, moving one relative to the other in arrow 19, roll product 20. End supports 5 and b move axially to stop elements, selecting gaps S and compressing spring washers 1 In FIG. 2 shows the position of the end supports 5 and b, when the product is rolled. The spring washers 10 are compressed. The gap S is formed at the end face of the end supports. After rolling, the housing 1 and the internal research institute roll 15 occupy the initial position, and the left end support moves to the left in the direction of arrow 16 to the initial setting, (Fig. 3), freeing the working area for extruding the product

20 of the matrix 14. Oil through the coupling

21 is fed into the cavity 22 of the hydraulic cylinder (Fig. 3), the force P developed by the hydrocyliidrome leads the product 20 through the rods 3 with the right end support.

from the matrix 14. At the same time, the friction force T arising between the outer diameter of the product 20 and the inner diameter of the matrix is overcome by the force P developed by the hydraulic cylinder; The axial forces acting during the extrusion of the product from the matrix 14 are closed on the housing 1.

Claims (2)

In comparison with the known, the proposed tool provides an increase in labor productivity and increase. improvement of the quality of the product, thereby increasing the utilization rate of the metal. Claim 1. Invention tool for cold rolling of ring products, comprising a drive inner core roll, a matrix fixed rigidly in a rotatable body, and end supports, one of which is spring-loaded in the axial direction, and the other is connected through a rod to a piston of a power cylinder and, in order to increase productivity and improve the quality of products, the housing is made with an annular cavity and through axial holes extending from it, the piston is installed in this cavity and, and the rods are in the axial bores, the end support associated with the piston of the power cylinder is spring-loaded, and thrust elements are installed coaxially at the end supports inside the body, and the distance between each end support and the stop element is equal to half the amount of the annular product broadening. 2. The tool according to claim 1, wherein the cell has an element for supplying pai6 fluid associated with the cavity of the cavity. Sources of information taken into account in the examination 1. UK patent 1329251, cl. In 3 M, published. 09/05/73 (prototype). 9 S f {/. f