Method of forming a conical sheet material

 

(57) Abstract:

Usage: the invention relates to the processing of metals by pressure and can be applied when forming the conical parts, including the bottom. Essence: in the original piece cut out two sectors, which are symmetrical with respect to one another, and in the stamp without pressure exercised by forming in one process transition. Then butt weld. This significantly reduces the degree of deformation and prevents the formation of corrugations. 4 Il.

The invention relates to the processing of metals by pressure, in particular to methods of cold forming, and can be used when forming the conical parts.

Known methods of extraction in a single operation shallow and medium-conical parts (Romanovsky, B. N. Handbook of cold stamping. 6 edition-HP engineering, 1979, S. 158, Fig. 134 a, b).

The known method multistage extraction high conical parts (ibid, S. 158, Fig. 135,b). Preparing the production of such parts requires considerable costs associated with the manufacture of complex die tooling. The choice of materials for such components is limited ductility.

>However, this method cannot, for example, to carry out the forming of the conical parts with the bottom.

The proposed method differs in that the workpiece is cut symmetrically additional sector, and the shaping is carried out in the stamp without a clip with the subsequent welding of the joint.

In Fig.1, 2 shows the source of the workpiece of Fig.3, 4 parts obtained by this method.

The sector sizes depend on the design details, the cone angle and is determined by calculation with the subsequent practical training process.

In this way it is possible to make cone details virtually unlimited height, even in a single small-scale production under the most adverse to extract relationships between material thickness and diameter of the workpiece, from maloplastichnye materials.

The method of forming tapered parts, including the process of cold forming a flat round billet with a cutout in the form of a sector, characterized in that the workpiece is cut symmetrically additional sector, and the formation is carried out in the stamp without a clip with the subsequent welding of the joint.

 

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