SU1156762A1 - Die for pressing articles - Google Patents

Abstract

1. MATERIAL FOR PRESSING PRODUCTS, at the working end of which around the point there is a grid of intersecting lubricating grooves, characterized in that, in order to increase productivity and improve product quality, the grid is made in the form of concentric and radial grooves, while the width of the radial grooves increases direction from the point to the periphery of the matrix, and the width of the concentric grooves is constant. 2. Matrix pop.1, distinguished by the fact that the width of the concentric grooves at the bottom exceeds their width at the end of the matrix. (L - SISP -vl 05

Description

one . The invention relates to the processing of metals by pressure, in particular to the designs of the working tool of extrusion presses, intended for the pressing of articles with lubricant. The purpose of the invention is to increase the productivity of the pressing process and improve the quality of products. FIG. 1 shows a matrix, a longitudinal section; FIG. 2 is a view A of FIG. one; in fig. 3 - node T on fkg, 1; in fig. 4 - unit (/ in Fig. 2) The matrix for pressing products consists of a body 1 equipped with point 2, the configuration of which corresponds to the profile of the pressed article. The working end face of body 1 has a grid of grooves for lubricating materials, which is made in a series of concentric grooves 3 intersecting with radial grooves 4 directed along the flow line of the compressible material. In this case, the cross section of each of the grooves 4 increases in the direction from point to the periphery of the matrix with the formation of steps 5 at their intersections with centric grooves. The width of each concentric groove at the bottom can exceed its width at the end of the die. This ensures that a large amount of lubricant can be accommodated. Both the concentric and radial grooves stop on the plane of the working face of the die body, not the income before its point The number of grooves 3 and 4, the frequencies of their deposition on the end face of the body 1, their cross section 22, the size of the steps 5 are chosen - based on the profile and material of the extruded product. The matrix works as follows. The matrix is installed on an extrusion press. Before starting the pressing, the grooves 3 and 4 are filled with grease. A press billet is loaded into the press container; under pressure, the press pusher flows to point 2 along the radial grooves 4 and displaces grease from them. When passing through stages 5, part of the metal being pressed falls into concentric grooves 3 and also displaces grease from them. I Thus, during the entire pressing cycle of the workpiece, the lubricant is constantly displaced from the grooves. 3 and 4, its arrival on the working surface of the matrix and the separation of the lubricating layer of the contacting surfaces of the workpiece material and the matrix. The presence of grease on the end of one die is designed for several compacts. reducing the amount of grease in the grooves 3 and 4 and the cavity 6, the die is removed from the press and replaced with another, similar and filled with grease, on which the pressing of the products continues. The replaced matrix is cleaned of residual pressed metal in its grooves and cavities, packed with fresh lubricant and can be re-installed on the press for reuse.

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Type A

FIG. 2

Fig.Z

Claims (2)

1. MATRIX FOR PRESSING PRODUCTS, on the working end of which around the spectacle there is a grid of intersecting lubricating grooves, characterized in that, in order to increase productivity and improve product quality, the grid is made in the form of concentric and radial grooves, while the width of the radial grooves increases in the direction from the point to the periphery of the matrix, and the width of the concentric grooves is constant. 2. Matrix pop. 1, distinguishing me with the fact that the width of the concentric grooves at the bottom exceeds their width at the end of the matrix. Fi /