A method for rotary deep drawing of thin-walled cup-shaped parts

Abstract

The invention discloses a rotary deep drawing forming method of a thin-walled cup-shaped part, which includes ① blanking, ② homogenizing heat treatment, ③ heating and heat preservation of the blank and the mold, ④ putting the blank into a V-shaped cavity, and the punch rotates on the top Driven by the hydraulic press, it moves downwards, and first touches the upper surface of the blank, and the punch moves downward at a constant speed, so that the metal on the contact surface flows into the groove on the end face of the punch one after another, and is integrated with the punch, and the punch drives the blank to start torsion and Press down, and at the same time, the peripheral part of the billet is squeezed and flows into the multi-pass arc convex platform. First, one side of the peripheral metal touches the first round arc convex platform, forming a height difference with the other side, and then makes the In the next downward twisting deformation process, the speed difference is formed on both sides, and finally squeezed into the rectangular cavity until it moves to the specified position. This case can 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 technical field of metal plastic processing technology and forming, in particular to a technology for deep drawing and forming of iron and steel materials, in particular to a rotary deep drawing and forming method 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 flang...

AI Technical Summary

Problems solved by technology

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

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