SU1423245A1 - Compound die - Google Patents

Abstract

The invention relates to the field of metal forming and, in particular, to combined punches for pressing and piercing. The purpose of the invention is to increase productivity and efficiency by facilitating the removal of forgings. When lowering the press ram, the core of the punch squeezes the forging. The segmented slider of the upper plate is at the same time pressed by the spring to the center of the stamp and serves as a support for the core of the punch. As the press slider moves further down, the rollers of the slides contact the bevels of their direction, their columns and dilute the slides by an amount greater than the radius difference between the core of the punch and the pusher, which allows the pan to be pierced forgings. 1 hp f-ly, 3 ill.

Description

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The invention relates to the processing of metals by pressure, in particular to the manufacture of hollow forgings.

The purpose of the invention is to increase productivity and efficiency by facilitating the removal of forgings from the die.

FIG. 1 shows a stamp, the left part is the initial position, the rights are the final position, section A-A in FIG. 2; in fig. 2 shows a section BB in FIG. one; FIG. 3 is a section B-B in FIG. one.

The stamp consists of the upper J and nkzh- 5 ne 2 plates interconnected by guiding columns 3 and bushings A. On the upper plate 1, the outer ring 5 is fixed, the core of the punch 6 and the pusher 7. A matrix 8 is mounted on the lower plate 20 2 Day 9, the support plate 10, the annular ejector 11 and the lower pusher 12. In the sample of the upper plate I, the core of the punch 6 is mounted, 25 in the form of segment slider 13, with springs 14 mounted along its perimeter.

The mechanism for moving the sliders 13 consists of guide columns 3 and cylindrical rollers 15 mounted in through-closed grooves made in each of the sliders 13. The stamp works as follows. The preheated preform 16 is heated and set in matrix 8, after. the press slide with the top plate 1 moves down. The outer sleeve 5 and the core of the punch 6 at the same time .x from the end face of the workpiece 16 and the process of extrusion POSITION 17 begins.

When the press ram moves downward, the rollers 15 contact directly with the profile surfaces located on the sides of the guide columns 3 that are distant from the center, passing through closed through grooves inserted in each of the sliders 13. On the profile surfaces of the columns 3 there are bevels, the location and dimensions of which are chosen in such a way that, when the required thickness is reached, the cylindrical rollers 15, 18, come into contact with these bevels, spread the sliders 13 onto

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magnitude greater than the radius difference. core punch 6 and pusher 7.

Upon further downward movement of the press ram, the core of the punch 6 remains in the unsupported position, and the fault 9 produces the forging firmware 1 7.

After the end of the firmware, the press slide with the top plate 1 goes up. When approaching the end high point, the upper press ejector presses the pusher 7, which acts on the core of the punch 6 and removes the ridge 18 from the outer race 5,

When moving upward, the rollers 15 slide off the bevels of the guide columns 3, and under the action of the springs 14, the segment slider 13 returns to its original position.

The lower press ejector acts on the lower pusher 12, and the forging 17 is removed from the die 8 by the ring ejector I1. Then the punching cycle is repeated.

Claims (2)

1. Combined die, mainly for extruding and piercing hollow forgings, containing a movable top plate with a pusher and a fixed punch in the form of a sleeve and core, as well as a lower plate with a matrix, pierced and ejected system, connected by guide columns, which, that, in order to improve productivity and efficiency by facilitating the removal of forgings, it is equipped with spring-loaded driving gears from the moving mechanism with segmental slider with grooves, cavities are made in the upper plate lzusch- Ki and the latter are placed in the cavities of the upper plate with the possibility of reciprocating movement for opening and obrazov.ani pusher, and reacting with the end face of the punch core. 2. The stamp according to claim 1 is also distinguished by the fact that the mechanism for moving the sliders is executed in the form of rollers mounted in the grooves of the slider & and installed with the possibility of interaction with the bevels made on the columns on the sides opposite to the punch. Xf ii / fig.-f / U / Editor M „Govtip ipULS.d Compiled by V. Beschekov Tehred M. Khodanich Proofreader n. RSOROL fie. 2