SU1423228A1 - Method of manufacturing parts having curvilinear surface - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used in mechanical engineering in the manufacture of hollow parts with a curved surface. The goal is to improve the quality of manufactured parts by reducing their dissimilarity, innosti. First, a dome-shaped semi-finished product is formed with a height equal to 0.09-0.10 of the diameter of the finished part. The geometric parameters of each rift are in the range, 14, where h is the height of the rift, and is the angle of the rift. The method allows to obtain equally thick parts. 3 il.

Description

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The invention relates to the processing of metals and relates to methods for manufacturing hollow parts with a curved surface.

The purpose of the invention is to improve the quality of parts by reducing their differences in width.

- In FIG. 1 shows a diagram of the mold-I ki roll-like semi-finished product; in fig. 2 is a diagram of the final shape-j development; in fig. 3 - distribution curves of the material along the formation of details.

An apparatus for carrying out the method comprises a matrix 1 for forming a semi-j fabricated product 2 with ring rifts on the working surface and a matrix 3 for final shaping. FIG. 1 denotes blank 4; FIG. 2 ready detail 5.

i The method is carried out as follows.

The workpiece 4 is mounted on the matrix 3. When the pressure is applied by the working medium (for example, liquid), first, a dome-shaped semi-finished product 2 with a height of 0.09-0.10 diameter of the finished part 5 is formed with an annular concentric rifts, the geometrical parameters of each of which are in the Range. ,14,

where h is the height of the rift;

 and - the angle of the rift.

I At the same time, the surface area of the semi-finished product 2 is equal to the surface area

Product detail 5. After this, final shaping is carried out on the matrix 3 in the direction opposite to the direction of the molding of semi-finished product 2 with simultaneous unfolding of rifts.

The condition of equality of the areas of the surfaces of the semi-finished product 2 and the finished part 5, provided by the rifts on the semi-finished product 2, makes it possible to obtain equal-thickness parts 5.

Thus, this method in comparison with the known increases the quality of manufactured parts by reducing the thickness variation.

Claims (1)

Invention Formula A method of manufacturing hollow parts with a curved surface, with a working medium at the preliminary stage, is formed into a dome-shaped semi-finished product with 0 circular concentric rifts, after which the final shaping with simultaneous unfolding of rifts is performed, in order by reducing their thickness variation, in the process of forming at the preliminary stage, a semi-finished product is obtained with a height equal to 0.09-0.10 of the diameter of the finished part, and s parameters each rift are in the range thirty , 14, l where h is the height of the rift; and - the angle of the rift. 1 Material AyOp 1,0 ffua / iemp SQZoroffoK 500mm %  Km Material / f. 0.8 di / o / emp 3OsomoffoH Oml}