Novel deep stretching process of curved surface

Abstract

The invention relates to a novel deep stretching process of a curved surface. A structure of a stretching material of a product is cut by adopting special equipment; the stretching material is welded into a closed structure; after a welding seam is reshaped and a swaging is subjected to reversal pretreatment, a rudiment of the treated closed product is put in the curved surface or a cambered mould; and a required shape is pressed by utilizing the stamping press of the mould through one-time forming. The novel deep stretching process comprises the specific operating steps: cutting, closing, welding, the reshaping of the welding seam and the reversal pretreatment and the stretching of the swaging. The novel deep stretching process has the advantages of simple process, convenient operation, one-time stretch forming, time saving, improved efficiency, needlessness of repeatedly annealing and tempering treatment, high stretching quality, low requirement on raw materials, accurate shape of aformed product without the defects, of stretching pieces, such as surface dents, salient points, avulsion and the like, and low comprehensive cost.

Description

technical field [0001] The invention relates to a novel curved surface deep drawing process. Background technique [0002] In the traditional stretching process, most of the strip blanks are simply processed directly and then stamped. This process is often used when drawing general products, but compared with products that require deep drawing, the stamping process needs to be completed many times, and multiple annealing and tempering treatments are required after stamping. Trouble, low efficiency, high requirements on raw materials, waste of materials, cumbersome steps, relatively low success rate, and poor product quality; at the same time, it has high requirements on mold manufacturing design and construction, which increases additional costs to a certain extent. the cost of. To sum up, the traditional stretching process restricts the production of products to a certain extent, which is difficult to meet market demand and is not conducive to the development of enterpris...

AI Technical Summary

Problems solved by technology

This process is often used when drawing general products, but compared with products that require deep drawing, the stamping process needs to be completed many times, and multiple annealing and tempering treatments are required after stamping. Trouble, low efficiency, high requirements on raw materials, waste of materials, cumbersome steps, relatively low success rate, and poor product quality; at the same time, it has high requirements on mold manufacturing design and construction, which increases additional costs to a certain extent. the cost of

To sum up, the traditional stretching process restricts the production of products to a certain extent, it is difficult to meet market demand, and it is not conducive to the development of enterprises