SU867451A1 - Die for straightening flat works - Google Patents

Description

(54) STAMP FOR THE ADJUSTMENT OF FLAT PLATES

I

The invention relates to the processing of metals by pressure, namely, to the correct devices and can be used to correct the curvature of flat blanks in dies of presses.

Known stamps for straightening sheet or strip steel with multi-support working surfaces, which are made in the form of LQ combs.

Also known is a stamp containing two clamping plates with working rotational profiles in the form of protruding elements uniformly distributed over them, which are four-sided pyramids with a profile angle of 60-90 ° and a dull tip of G23.

Editing in these stamps, called waffles, is done by compressing the workpiece between the working boards of the upper and lower plates.

A disadvantage of the known die constructions is their low durability and

great complexity in the manufacture and repair.

These disadvantages are explained by the uneven wear of the side and end faces of the protruding elements in the process of editing the blanks, as well as difficulties in their manufacture and repair, due to the complex shape of these elements, which are made integral with the pressure plates.

The purpose of the invention is to increase the durability and reduce the complexity in the manufacture and repair of a stamp for straightening flat blanks.

This goal is achieved due to the fact that the well-known stamp for straightening flat blanks, containing two clamping plates with working surfaces in the form of high-stacked uniformly distributed over them, is equipped with two separators with holes, each of which is fixed on the clamping plate, and the protruding elements are made in the form of 3 balls mounted in the holes of the separators. FIG. 1 shows an I-stamp for editing flat blanks; the general view in FIG. 2 is a view A on the working surface of the lower pressure plate of the die in FIG. one . Straightening dies for flat blanks consist of upper 1 and lower 2 crossbars, on which, respectively, the upper and lower pressure plates 3 and 4 with smooth hardened working surfaces are fixed. The clamping plates 3 and 4 are fixed, for example with screws 5, separators 6 and 7, in the holes of which free-standing steel balls 8 are installed, evenly distributed on the working surface (FIGS. 2). The device works as follows. Due to the force transmitted by the press to the upper traverse, the workpiece is straightened, placed between the working surfaces of the upper and lower pressing pressures 3 and 4 formed by the balls 8. At the same time, the ball 8 at the time of contact with the surfaces of the workpiece surfaces of pressure plates 3 and 4. Making working surfaces of pressure plates from sets of balls freely installed in the openings of the separators, which are fixed to the plates, makes it easier to manufacture a stamp for flattening

Claims (2)

(Pui.1 blanks, multiple restoration of working surfaces and reduction of wear of protruding elements. This reduces the laboriousness of manufacture and repair of the itamp and increases its durability. In addition, such an implementation of the working surfaces of the pressure plates of the stamp allows using straightening blanks of various types. Formula of the invention Stamp for straightening flat blanks, containing two pressure plates with working surfaces in the form of evenly distributed protrusions Of these elements, characterized in that, in order to increase durability and reduce labor intensity in the manufacture and repair of the stamp, it is equipped with two separators with holes, each of which is fixed to the pressure plate, and the protruding elements are made in the form of balls installed in the holes Separators. Sources of information taken into account during the examination 1. Slonim A.Z, and Sonin AD Mapshny for editing sheet and varietal material. M., Mashinostroenie, 1975, p.18, fig. 36, 2. Romanovsky V.P. Handbook of cold stamping. L ,, Mashinostroes. 294-297, fig. 259 Type A (pu.2