SU1625578A1 - Die for impact extrusion - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to the design of dies for die forging. The goal is to increase productivity. The die forging includes a punch and a die mounted on the upper and lower plates, and is provided with a mechanism for rotating the lower plate, which is designed as guides rigidly connected to the upper plate and having copier grooves. The bottom plate is equipped with copier fingers. In the loading-unloading position, the bottom plate with the matrix is rotated to provide access to its working space. Before the stamping operation, the bottom plate returns to the working position. 2 hp f-ly, 3 ill.

Description

The invention relates to the processing of metals by pressure, in particular to the design of die for die forging.

The aim of the invention is to increase productivity by improving the conditions for removal of products.

Figure 1 shows the stamp in the closed position; figure 2 - section aa in figure 1; on fig.Z - stamp in the unloading-loading position.

The stamp comprises an upper movable plate 1 with a punch 2, a lower plate 3 with a matrix 4 mounted on a rigidly fixed support element 5, and a turning mechanism consisting of guides 6 with copy grooves 7 rigidly connected to the movable plate 1 and copier fingers 8, rigidly connected with the plate 3, the supporting element 5 is made in the upper part 9 with a cylindrical support surface 10, and the plate is the third counter supporting surface 11. The stamp can be installed in the casing 12 of the isothermal unit and has a window 13

for loading-unloading blanks 14 and the door-cap 15.

The stamp works as follows.

In the initial position, the punch is raised, and the matrix is turned to the window of the casing of the isothermal unit. In this position, the workpiece is laid in the matrix stream. Then, when the press ram moves down, the movable plate, on which the guides are fixed, drives the copier fingers fixed on the lower plate, as a result of which the latter rotates, having such a possibility due to the cylindrical supporting surface, and assumes a vertical position with punch. With further movement of the press ram down, the punch and the die are closed, the punch meets the workpiece, its deformation. During the return stroke of the press ram, the tool and plates return to their original position.

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ate

3

In the initial position, the punching is unloaded, after which the cycle is repeated.

Claims (3)

Claim 1. Stamp for die forging comprising upper movable and lower plates with a punch and a die mounted on them, respectively, with inclined plane of the connector and engravings forming a stream, characterized in that, in order to increase productivity by improving the conditions for removal of products, the bottom plate is installed with the possibility of rotation in the plane, perpen five a circular longitudinal axis of the stream, and is equipped with a turning mechanism. 2. A stamp according to claim 1, characterized in that it is provided with a supporting element under the lower plate, and the contact surfaces of the supporting element and the lower plate are cylindrical. 3. A stamp according to claims 1 and 2, characterized in that the mechanism for rotating the lower plate is made in the form of guides with copier grooves rigidly connected with the upper movable plate and copier fingers rigidly connected with the lower plate and placed in the indicated slots. FIG. FZH