SU1232355A1 - Stamp for die forging - Google Patents

Description

The invention relates to the processing of metals by pressure, and to the design of dies and can be used, for example, for extruding large-sized box-shaped parts.

The purpose of the invention is to increase the reliability of the stamp and increase productivity.

FIG. 1 shows the stamp in the initial position after loading the workpiece into the matrix; 2 is the same in the process of removing the box; in fig. 3 is the same in the process of opening and removing the extruded part from the die; in fig. 4 - matrix, top view.

The stamp contains the bottom 1, the preparation prepared for cold pressing, is loaded into the matrix to (Fig. 1). During the working stroke of the press ram in the first stage of the stamp work by the force transmitted from the punch 14 through the blank 24 to an annular step of width b, the matrix 10 is pressed into the band 11, moving by the value of & (Fig. 1). 10 A compressive stress is created in this way, preventing the formation of gaps between sections A, B, C and D of the matrix 10. After this, the extrusion process is carried out (Fig. 2). 15 During the return stroke of the press ram in the first stage of unfolding the die 10, together with the punch 14 and the inserted piece, are moved together by the amount of the free stroke,

exact 2 and top 3 gashta, connected- 20After this, the matrix 10,.

towards the zimy column 4 and the hub with its upper end into the strips 13 with ogami 5. On the bottom plate 1 mounted for its course, stops,

the lower punch 6 with the help of the bell keeps the disclosure of the stamp.

bodies 7 and strips 8, holding the EITI section A, B, C and D of the matrix 10

from a turn in a horizontal plane - 25 turn relative to twist, and submarine 9; On the intermediate plate 2, the matrix tO is installed, which is then made of four sections A, B, C and D (Fig. 4), bandages 11 and 12, strips

13 restraints of the matrihtsl 10. The i-punch 3 is fixed on the top plate 3

14 using a punch holder 15

and a split sleeve 16, consisting of two sections, covering its seating part, and a lining 17. The punch 15 is clamped on the upper pin 3 and the split sleeve 16, together with the punch 14 in the punch 15, is carried out

a 1-2 axle shaft and a depressed part is freely removed from its cavity along with a punch 14 (Figs. 3 and 4). The sections A, B, 30 C and D of the matrix 10 are rotated through the angle oi after lifting it from the band 11 by the amount due to the fact that. between them and the plate 20 is placed an elastic gasket 21, and the connection is carried out by screws 22 and spherical washers 23. The free removal of the die from the cage together with the pressed part and the punch during the return stroke of the press is achieved

a 1-2 axle shaft and a depressed part is freely removed from its cavity along with a punch 14 (Figs. 3 and 4). The sections A, B, 30 C and D of the matrix 10 are rotated through the angle oi after lifting it from the band 11 by the amount due to the fact that. between them and the plate 20 is placed an elastic gasket 21, and the connection is carried out by screws 22 and spherical washers 23. The free removal of the die from the cage together with the pressed part and the punch during the return stroke of the press is achieved

prismatic keys 18 and 19. This is due to the fact that the angle креп 3 between the method of fastening and fixing the punch with the die and forming the conical anson 14 provides an easy and quick surface of the bandage that exceeds the ruy angle of its shift. Sections of the self-braking matrix. At the second stage, the beds between each other, from the side of their lower bases, by the plate 20 and the elastic gasket 21 by means of screws 22

45

of the block cover, the extruded part is removed from the punch 14 by means of a puller when it is removed from the cavity of the matrix 10.

spherical washers 23. The original

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the billet prepared for cold extrusion is loaded into the to matrix (Fig. 1). During the working stroke of the press ram in the first stage of the stamp work by the force transmitted from the punch 14 through the blank 24 to an annular step of width b, the matrix 10 is pressed into the band 11, moving by the value of & (Fig. 1). 10 A compressive stress is created in this way, preventing the formation of gaps between sections A, B, C and D of the matrix 10. After this, the extrusion process is carried out (Fig. 2). 15 During the return run of the press slide in the first stage of opening the die 10, together with the punch 14 and the inserted part, move the local axis 1-2 and the pressed part is freely removed from its cavity together with the punch 14 (Fig. 3 and 4). The reversal of sections A, B, C and D of the matrix 10 by the angle oi after lifting it from the bandage 11 by the amount is due to the fact that. between them and the plate 20 is placed an elastic gasket 21, and the connection is carried out by screws 22 and spherical washers 23. The free removal of the die from the cage together with the pressed part and the punch during the return stroke of the press is achieved

due to the fact that the angle / 3 between the axis of the stamp and the generator of the conical surface of the band exceeds the angle of self-braking. At the second stage, the

 due to the fact that the angle / 3 between the axis of the stamp and the generator of the conical surface of the band exceeds the angle of self-braking. At the second stage, the

45

of the block cover, the extruded part is removed from the punch 14 by means of a puller when it is removed from the cavity of the matrix 10.

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Compiled by V. Karpychev Eddsf N. Dankulich Tehred O. Gortvay

Order 2725/11 Circulation 655Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Proofreader M.Samborsk

Claims (2)

STAMP FOR VOLUME STAMPING, mainly extrusion of box-shaped parts, comprising lower, intermediate and upper plates connected by guide columns and bushings, upper and lower punches with supports fixed respectively on the upper and lower plates, sectional matrix mounted with the possibility of vertical movement relative to the conical holder mounted on the intermediate plate, characterized in that, in order to increase the reliability and performance, sections of the matrix are interconnected with side of the lower base plate and an elastic gasket and mounted with the possibility of limited rotation about a vertical axis. 3 V n If ff 18 ♦ ¹