SU925480A1 - Apparatus for forming barrel-shaped parts - Google Patents

Description

(54) DEVICE FOR STAMPING DETAILS OF BARRELFORMED FORMB1

12

The invention relates to the manufacture of barrel-shaped sheet metal parts based on the use of metal forming.

A device for forming parts is known, which comprises a die, a clamp and a composite punch, made in the form of a pyramidal base, the sliding sectors interacting with the sleeve associated with the drive of its axial movement 1 are located.

However, this device involves the use of pre-elongated hollow glasses as blanks, which is associated with the great laboriousness of manufacturing barrel-shaped sheet parts.

The aim of the invention is to increase the productivity of the manufacture of barrel-shaped parts from sheet metal. This is achieved by the fact that the matrix is made hydroelastic, and the sleeve is connected with the drive of its movement by means of a clamp, which is installed with the possibility of axial movement and is equipped with a mechanism of its rigid connection with the sleeve, made in the form of individual drives of the rods located in the clamp and interacting with the recess located on the surface of the sleeve.

FIG. 1 shows the initial position of the device before the start of forming the part; in fig. 2 - the stage of the end of forming a barrel-shaped hip; in fig. 3 — device after actuation of the mechanism of rigid connection of the clamp with the sleeve; in fig. 4 - the device after lifting the sleeve to a height that provides removal of the stamped part 10 from the forming punch.

The device comprises a container I, a hydroelastic matrix 2, a clamp 3, in which are located the rods 4 of the mechanism for rigidly connecting the clamp with the sleeve. 15 The punch has a cover 5, a pyramid base 6, a sleeve 7 made with a recess 8, and sliding sectors 9. The punch is placed on the base of the device 10, relative to which the cup 11 and the hydraulic cylinder 12 are moved.

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The operation of the proposed device is as follows.

When the container 1 is lowered with the hydroelastic matrix 2 after contacting it with the workpiece 13, pressure q occurs from the latter side (see Fig. 1), the value of which depends on the counter-pressure of the fluid 14. The pressure value from the hydroelastic matrix 2 is

The 30th stretch is set so that when

the formation did not occur destruction and corrugation details. After the forming of the part is finished (see Fig. 2), under the action of pressure from the fluid supplied through the hole 15, P1TOKI 4 of the mechanism of a firm connection of the clamp with the sleeve, placed in the clamp 3, when moving in the radial direction, its protruding part corresponding recess 8 on the outer surface of the sleeve 7 (see Fig. 3). As a result, the hydraulic cylinder 12 under the action of the pressure of the fluid supplied through the opening 16, moves together with the cup 11, the clamp 3 and the sleeve 7 upwards, whereby the split sectors 9 move in the radial direction to the axis of the device (see Fig. 4). This results in a reduction in the largest diameter of the shaping tool to a value such that the stamped part is removed. Under the action of pressure from the side of the fluid supplied through the opening 17, the rods 4 of the mechanism for rigidly connecting the clamp to the sleeve return to their original position (see Fig. 1).

The use of the proposed device for shaping barrel-shaped parts ensures their manufacture without npo-v interstitial stretching of hollow blanks, which leads to a reduction in labor-intensive production of parts and to a reduction in production preparation times by almost two times. Thus, the invention proposed invented :; at the factories it provides an annual economic effect of up to 10-15 thousand rubles. with a significant expansion of technological capabilities and an increase in the quality of manufacturing hollow sheet parts of a barrel-shaped form.

Claims (1)

1. Meshcherin V. T. Listova stamping. Atlas of diagrams, M., “Maschinostroenie, 1975, p. 121, fig. 343. .x fuz. / Phage. Z / J Fig