SU1498584A1 - Die for cold pressing-out of intricate cavities in billets - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to dies for cold extrusion of forming cavities in the blanks, and serves to improve the operating conditions during the cold extrusion process by compensating for possible distortions. The stamp contains a bandaged container with a cavity in which the sectional ring is located, in which the guide ring for the master punch is installed, and a removable device. The guide ring is made of an elastically compliant material, such as polyurethane, and the removable device is made of a hardened steel sleeve, installed in the gap between the sectional sleeve and the tail section of the master punch. When pressing out, the steel sleeve acts on an elastically flexible ring, which, deforming, extrudes the master punch. 2 Il.

Description

The invention relates to the processing of metals by pressure, namely to the cold extrusion of forming cavities in the blanks, and can be used in the manufacture of working elements of dies and molds.

The purpose of the invention is to improve the operating conditions by making it possible to compensate. distortions in the performance of the process of cold pressing, namely when the direction of the master punch and when it is pressed out of the extruded cavity.

Figure 1 shows the stamp during the extrusion process; figure 2 - the same, in the process of straightening.

The die for cold installation includes a sectional sleeve 1 installed in container 2. A removable guide ring 3 of resilient material, such as polyurethane, is installed in the sectional sleeve to guide the master punch 4, actuated by the executive body 5 of the compression-extruder equipment. To remove the master punch, after performing the pressing operation, a steel bushing 6 is inserted into the gap between the sectional sleeve 1 and the shank of the master punch 4.

The stamp works as follows.

WITH

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SP

00 4

3, 1498584.4

After loading into a sectional bushing - Due to the fact that the working part

the master punch, as a rule, has an op {1 technologic technological unit 1 of the workpiece 7 by means of the executive body 5 forging and pressing equipment is produced,

pressing the master punch 4 into the working end of the blank 7. When the required extrusion depth is reached, the tails part of the master punch touches an elastically responsive IQ but-guide ring 4, displaces part of its material into the gap between the sectional bushing and the tail part of the master punch.

Upon completion of the insertion, a steel bushing 6 is installed above the removable guide ring, which, by pressing the actuator of the pressing equipment onto the ring 3, causes its material to become volumetric-tensioned until a certain amount of stress is reached. the effort of cutting the master punch from the blank. The material of the elasto-pliant ring, acting on the transitional degree of the master punch shank, will press it out of the extruded cavity.

The womb, the necessary movement of the master punason upwardly is insignificant, and its further extraction can be carried out manually.

Claims (1)

Invention Formula Stamp for cold-off. nor embossed cavities in the blanks, 15 comprising a container, in the cavity of which there is a sectional hub, a removable guide ring for the master punch, and a pressing means, characterized in that 20 that, in order to improve the operating conditions, the removable guide ring is made of an elastically responsive material, for example polyurethane, and the extrusion elements are made 25 in the form of a metal sleeve installed in the space between the sectional sleeve and the shank of the master punch with the ability to interact with the removable guide ring thirty The womb, the necessary movement of the master punason upwardly is insignificant, and its further extraction can be carried out manually. Invention Formula Stamp for cold stamping of relief cavities in blanks, the containing container, in the cavity of which a sectional hub is disposed, a removable guide ring for the master punch and an extrusion means, characterized in that that, in order to improve the operating conditions, the removable guide ring is made of an elastically compatible material, for example polyurethane, and the extrusion elements are made in the form of a metal sleeve installed in the space between the sectional sleeve and the shank of the master punch with the possibility of interaction with the removable guide ring Xxxx / hooh , - V X /// VXX / xXX / JV / VV -X X / yX .l XX / XX // XXI x, v xVXXy / X /// - v v , Fa) .1