SU872161A1 - Method of electric discharge machining of male and female dies - Google Patents

Description

(54) METHOD OF ELECTRO-EYUS TREATMENT

PUNSON AND THE MATRIX

one

The invention relates to the field of electroerosive processing of parts of overhead dies and can be used in the manufacture of fuzzy pairs of mating parts.

Various electrical erosion methods are known for the manufacture of a punch and a die mated to each other. All of them either do not provide the necessary accuracy of the conjugation 1, or are complex and laborious 2.

The closest to the technical cyiiviocnt of the invention is a method in which the punch is cut along the main copy, then a secondary copy is cut through the main copy with wiring of a different diameter, after which the 3J matrix is cut through the secondary copy.

The disadvantage of this method is balaclability, since it is necessary to have two copiers. In addition, the re-installation of the copiers are inevitable technical errors when changing bases.

The purpose of the invention is to reduce the labor intensity of manufacturing and increase the weight of the mating of the puaison and the matrix.

This goal is achieved by the fact that the profile of a copier is obtained by electro-corrosion firmware, a previously manufactured punch is used as an electrode tool.

These differences make it possible to minimize the coiquTHTb transitions and to exclude the resetting of the copier, since the firmware of its profile will be assembled with the matrix blank.

ten

FIG. 1 shows the matrix in the equipment with a copier, a section; “And FIG. 2 - also, vvd from above.

First, any of the known methods get a punch. Then the preform matrix 1

15 through insulator 2 is connected to the workpiece of copier 3 and set them at the electroshield cross-stitch rate. As a blank copy, for example, a plate of a crowd of only 1-1.5 mm can serve;

20, the treatment is carried out in a mode that provides an equidistant increase in the profile of the copier by OD) G-0.1 mm in relation to the profile of the punch.

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Thereafter, the profile profile is cut by a copier, which is then assembled together with a punch into a stamp. The size of the gaps between the punch and the die can be provided in the range of 0.03-0.12 mm, which completely eliminates the need for metalworking.

invention formula

The method of electroerosive treatment of the punch and die punch die, in which the matrix is obtained by cutting the electrode with wire over the copier, is different from that in order to increase

precision mate punch and the matrix, the profile of the copier is obtained by electro erosion firmware, using as an electric tool previously manufactured punch.

Sources of information taken into account in the examination

1. USSR author's certificate number 215360, cl. B 23 P 1/08, 1966.

2.Program of ft. D. and others. Manufacturing of steel cutting dies by electrochemical method. Sat Electrochemical methods of metal processing. Ed. I. I. Moroz, M., ENIMS, 1970, p. 209.

3i B. Artamonov. Size electric processing of metals. M., Higher School, 1978, p. 160 (prototype).

Claims (3)

Claim A method of electroerosive processing of a punch and die cutting dies, in which the matrix is obtained by cutting with a wire by a copier, characterized in that, in order to increase the accuracy of pairing the punch and the matrix, the profile of the copier is obtained by electroerosive piercing, using a previously made punch as an electrode tool. ₅ Sources of information taken into account in the examination 1. USSR copyright certificate No. 215360, cl. B 23 P 1/08, 1966. 2. Proklova β. D. et al. Manufacture of steel die cutting dies by the electrochemical method. Sat ’’ Electrochemical methods for metal processing. ” Ed. I.I. Moroz, 'M., ENIMS, 1970, p. 209. 3. Dimensional Artamonov BA ₁₅ Ceska electrical processing metals. M., '' Higher School ”, 1978, p. 160 (prototype). Fia. 1