SU795636A1 - Die for producing sleeve-type parts with end-portion beads - Google Patents

Description

I

The invention relates to the processing of metals by pressure, in particular to tooling for drawing.

A known stamp for the manufacture of parts such as glasses with a thickening in the edge part, containing a matrix, a puller and a stepped punch tl} However, on a known chip, parts cannot be obtained by drawing from a sheet

Closest to the present invention, there is a chip for manufacturing parts such as glasses with a thickening in the marginal part, comprising a top and screw matrix, a puller and a two-stage punch with the largest diameter in the face part 2.

However, on a known chipboard, parts with an external toothed crown cannot be obtained.

The purpose of the invention is the possibility of obtaining parts with an external gear rim.

This goal is achieved by the fact that the bottom matrix is split

perpendicular to the axle axis, on the inner surface of one of the parts there is an annular cavity with 1-tooth teeth, the puller is placed between the dies, and the punch is made with diameters, the difference between which and the thickness of the glass edge after being stretched in the upper matrix is larger than two.

The stamp contains the upper matrix 1,

the lower matrix, consisting of rings 2 and 3, a sector spring-loaded puller 4 (springs not shown) and a stepped punch 5, on the ring 3 is a notch 6 with a serrated surface,

and the diameters of the punch (d and dj) exceed the double thickness of the cup 7 after

stretching in the upper matrix, i.e. da di J

9 71

The stamp works as follows. During the working stroke, the punch 5 draws the glass 7 and the sheet blank. At the same time due to the variable gap between the die and the punch

Claims (1)

SUMMARY OF THE INVENTION A stamp for the manufacture of parts such as glasses with a thickening in the edge part, comprising an upper and lower die, a puller and a two-stage punch with the largest diameter in the end part, characterized in that, in order to obtain parts with an external gear ring, the lower matrix made detachable perpendicular to the axis of the stamp, and on the inner surface of one of the parts there is a yen, an annular cavity with longitudinal teeth, the puller is placed between the dies, and the punch is made with diameters, the spacing ratio those to the thickness of the edge of the glass after drawing in the upper matrix more than two.