A rotary deep drawing die for thin-walled cup-shaped parts

Abstract

The invention discloses a rotary deep-drawing forming die for a thin-walled cup-shaped part, which includes a punch, a forming die and a lower template, the forming die is coaxially provided with a compound cavity for inserting a blank, and the end face of the punch and the blank is in contact It is a conical boss mold surface; the composite cavity is composed of a V-shaped cavity on the upper part and a rectangular cavity on the lower part. There are multiple channels in contact with the blank on both sides of the connection between the V-shaped cavity and the rectangular cavity. The sub-arc convex table, the multi-pass sub-arc convex table is composed of several convex tables arranged in sequence from top to bottom, and the arc radius becomes larger in turn; the number of arc convex tables on one side is larger than that on the other side There is one more arc-convex platform, so that the forming die is an asymmetrical annular body of revolution, and the extra arc-convex platform is arranged at the highest point of the side. This case can effectively improve the formability of steel materials, improve the comprehensive mechanical properties of formed components, and overcome the shortcomings of the large difference in anisotropic strength of thin-walled cup-shaped components formed by traditional thinning and deep drawing.

Description

technical field [0001] The invention belongs to the field of metal plastic processing technology and forming technology, in particular to a technology for deep drawing and forming of iron and steel materials, in particular to a rotary deep drawing forming die for thin-walled cup-shaped parts. Background technique [0002] With the rapid development of aerospace, national defense, transportation and other fields, it is urgent to use high-strength and lightweight components to achieve lightweight, among which cup-shaped components are one of the most representative structural forms. Deep drawing is essentially the process of gradually transferring the material of the flange part of the blank to the cylinder wall. During the transfer process, the material of the flange generates tensile stress in the radial direction due to the effect of the drawing force. Due to the diameter of the flange part Gradually becomes smaller, extrusion occurs between the materials of the flange part...

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Problems solved by technology

[0003] The main purpose of the present invention is to propose a rotary drawing die for thin-walled cup-shaped components, which can effectively improve the formability of steel materials, improve the comprehensive mechanical properties of formed components, and overcome the traditional deformation. Disadvantages of large difference in strength in different directions of thin-walled cup-shaped components formed by thin deep drawing

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