Molding stretch bending prefabricated member

Abstract

The invention provides a molding stretch bending prefabricated member. The molding stretch bending prefabricated member comprises a main body and a joint, wherein the main body comprises at least two planes having an angle and in parallel connection; edges of the at least two planes are connected to form fold lines; one edges in the bending direction of the fold lines are formed to an inner periphery of the main body, and the other edges are formed to an outer periphery of the main body; and convex hulls are arranged in the fold points of the fold lines. As the convex hulls are arranged in the connected fold lines of the at least two planes of the main body, the molding stretch bending prefabricated member cannot cause the product waste due to interference rupture caused by direct stretching or flanging due to low material calendering coefficient in the subsequent product molding stretching or flanging. As the convex hulls are formed on the prefabricated member beforehand, the preflowing is performed for the material beforehand, the stretching and the compression force caused by the operation can be borne in the stretching or flanging, the rupture is not generated, the pass percent of finished products is improved, and the cost is saved.

Description

technical field [0001] The invention relates to the technical field of metal stretching, and more specifically, to a forming, stretching and bending prefabricated part. Background technique [0002] Stretching is a stamping process that uses a stretching die to press a flat blank into hollow workpieces with various openings, or to process the finished hollow workpieces into hollow workpieces of other shapes. Stretching is also called drawing. The deformation process is: as the punch continues to descend, the outer diameter of the blank left on the end face of the die shrinks continuously, and the circular blank is gradually pulled into the gap between the punch and the die to form a straight wall, which is under the punch. The material becomes the bottom of the stretched part. When the sheet material enters the gap between the convex and concave dies, the stretching process ends, and the flat blank becomes a cup-shaped piece with a certain diameter and height. Compared with...

AI Technical Summary

Problems solved by technology

This kind of product is analyzed by the traditional process. The outer part of the product is formed by stretching process, and the inner part of the product is formed by flanging. materials overlap, Figure 4 3D drawings for products

Figure 4 The dotted line that runs through the main body of the workpiece is the molding line of the product. You can find the shape of the material on the inner periphery of the product after it has been expanded. Obviously, there is a double red shadow material missing.

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