SU795696A2 - Method of producing sleeve-type parts - Google Patents

Description

I

The invention relates to the processing of metals by pressure, in particular to methods for the production of parts such as glasses with flanges.

According to the main auth. No. 407618, a method for manufacturing parts such as a glass with a flange is known, which consists in installing a cylindrical part into the die cavity and deforming its central part with axial support by a movable die element while simultaneously deforming the flange part of the workpiece with the force ensuring the outflow of the material of the workpiece from it into the part wall l.

The disadvantage of this method is that it limits the deformation forces due to the presence of movable backwater, which minimizes the possibility of squeezing deep glasses. ,

The purpose of the invention is to ensure uniform deformation and the production of parts with a thinned bottom and a thickened flange.

To do this, the cylindrical billet is pre-deformed in thickness, its hole in the central zone, at which it is simultaneously.

ring corrugations are aligned, and the flange part is thickened, and in the process of deformation of the glass, the corrugations are smoothed by moving the material collected in them from the center to the walls of the glass. Figure 1 shows a stamp for pre-deforming a cylindrical billet in thickness; figure 2 - stamp for

0 obtain from a cylindrical blank billet.

Plane cylindrical preform 1 is preformed in a mold, the punch 2 of which

5 contains a wave-like profile to form annular corrugations. In the matrix 3, the same profile is reproduced as on the punch, but if ring pits are made on the punch, then annular bulges correspond to them on the punch. To improve the filling, the height of the relief on the punch is performed somewhat lower (by 10-15%).

5 matrix), and the width - more (20-30% of the width of the corresponding sections of the matrix.). Resonant or polyurethane stamping elements can also be used to mold the plastic.

0

Claims (1)

Claim A method of manufacturing parts such as glasses by auth. No. 407618, characterized in that, in order to ensure uniform deformation and obtain parts with a 15 thinned bottom and a thickened flange, the cylindrical workpiece is pre-deformed in thickness, thinning it in the central zone, on which ring corrugations and a thickening flange part are simultaneously formed, and in the process of deformation of the glass, the corrugations are smoothed out by moving the material collected in them from the center to the walls of the glass.