SU115570A1 - Stamp of a collapsible design - Google Patents

Description

The subject of the invention is a universal puncture stamp of a collapsible structure.

The proposed stamp allows to reduce the cost of tooling manufacturing, shorten the time for preparation of production and increase labor productivity.

This is achieved, thanks to the use of an electromagnetic unit in it, providing its mounting of single dies, punches and dies with the help of electromagnetic forces.

FIG. 1 shows two projections of the proposed stamp in assembled form; in fig. 2 - two projections of its electromagnetic unit.

The stamp consists of a matrix J, a punch 2, a punch holder 3 and a rezipovy washer puller 4.

To punch a whole series of holes in sheet blanks 5, single pins are assembled from individual dies, with a given arrangement of punches (according to a template) and fixed on the plates of an electromagnetic unit with the help of electromagnetic forces generated by these plates. For fixing the workpiece 5 during punching, there are clamps 6.

The electromagnetic unit (Fig. 2) consists of upper and lower bodies 7, having through oval holes for withdrawing the electromagnet poles, and stiffening ribs to increase their strength during stamping. Both housings are divided into a series of sections, in each of which the core 8 of the electromagnet, the comb 9 and the coil 10 are placed. The comb is bolted to the core of the electromagnet and separated from the case by diamagnetic gaskets L. The upper and lower housings are mounted on bases 12 Columns 13 and bushes 14, which make it possible to eliminate the backlash of the npeqca slider and retain a certain and constant position of the upper part of the block relative to its lower part during stamping. The upper part of the block is fastened to the press slide by the shank 15: No. 115570-2 -. ,,

When assembling the assembly punch, the punches are first set to the appropriate: tweaking holes in the reference part or template (Fig. 1), and then working on the protrusion, the ends of the punches are worn with their holes in the die. In this form, the entire installation is transferred to the bottom plate of the electrically-magnetic unit and the clamps 6 are installed along the contour of the part so that they ensure the correct fixation of the part during stamping. After that, the inclusion of the lower plates of the block into the network of coils of electromagnets strengthens punches and clamps on it. To mount the dies, the press slide is lowered until the bases touch the matrix with the upper plate and the coils of its electromagnets are connected to the network.

When the press ram is raised, the punches and latches remain fixed on the bottom, and the dies on the upper plates of the electromagnetic unit, and the position of the dies is consistent with the position of the corresponding punches. The reference part or template, on which the stamps were installed, is not removed until the end of the stamping and is an additional connecting link for the punches and the reference plane for the pullers 4, which are attached to the protruding ends of the punches before the stamping.

Subject invention

Stamp assembly-collapsible design, about tl and h and y w; and with the fact that, with tse.PzYu cost savings on manufacturing equipment, cutting time ko: i pre-production and increase productivity, example} ie {electromagnetic unit that secures a single matrix, punches and p: tampons using electromagnetic forces.

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