Drawing method and device

Abstract

The invention discloses a drawing method and a drawing device and belongs to the technical field of machining. The drawing method comprises the steps of primary drawing, shearing of the edge of a first wrinkle, and forming drawing. The step of shearing the edge of the first wrinkle of a semi-finished product through a shearing die is added between the primary drawing step and the forming drawing step, so that the stress of the edge of the semi-finished product can be released before the forming drawing step, and the situation that the stress concentrated at the edge of the semi-finished product affects the quality in the next procedure, and finally the quality of a formed part is decreased is avoided. The drawing device provided by the invention comprises a drawing die, the shearing die and a forming die. By arranging the shearing die, the edge of the first wrinkle of the semi-finished product can be sheared off accurately and efficiently, thus, the edge stress of the semi-finished product is released effectively, and the quality of the final formed part is improved.

Description

technical field [0001] The invention relates to the technical field of machining, in particular to a deep drawing method and a deep drawing device. Background technique [0002] With the continuous development of science and technology, in industrial production, there are more and more types of products, and the use of deep drawing dies to produce products is of great significance for improving production efficiency. Deep drawing dies not only enable rapid prototyping, but also manufacture workpieces of different shapes and sizes. Existing drawing dies mainly include a punch and a die. The punch is also called punching needle, punch, male die, upper die, etc. The punch is the part used to shape the inner surface of the product in the mold; main parts of the surface. When forming parts of different shapes, the cavity shape of the concave mold and the shape of the punch can be set according to the specific shape of the part. [0003] When the drawing die draws the part for ...

AI Technical Summary

Problems solved by technology

[0003] When the drawing die draws the part for many times, the part is subjected to the joint action of tangential stress and radial stress. However, due to the different stress directions and sizes of the part being drawn, The more concentrated the stress, the more prone to wrinkles at the edge of the drawn part, which seriously affects the quality of the next step

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