Procesing equipment capable of improving plate part formation limitation and method therefor

Abstract

An apparatus for increasing the forming limit of plate part is composed of a fluid medium cavity, a lower female die, an edge pressing ring, and a male die or a forming female die. Its forming method includes such steps as filling fluid medium in said cavity, putting a raw plate on the working position, applying an edge-pressing force, and controlling the male die to move downward.

Description

technical field [0001] The invention relates to a device used for processing boards and a method for processing boards using the device. Background technique [0002] In sheet metal forming, for sheet parts with high forming limit (large amount of deformation) whose shape and size are consistent with the punch, fluid is usually used as the force transmission medium for forming processing. The principle is to make the sheet under the action of fluid back pressure Close to the punch, the back pressure enhances the friction effect between the blank and the punch, forming a beneficial friction force, which can offset part of the tensile stress of the blank at the rounded corner of the punch, improve the bearing capacity of the deformed blank, and thus increase the forming limit of the sheet metal part. The forming technology of plate parts with fluid as the force transmission medium has been paid more and more attention due to its advantages of high process flexibility, simple m...

AI Technical Summary

Problems solved by technology

Complex parts with larger height-to-diameter ratios and higher forming limits cannot be formed in one process only by back pressure. Multi-pass forming not only causes processing costs and long processing cycles, but also accumulates errors in multi-pass forming. Affects the accuracy of parts, and cannot meet the requirements of special use conditions in the aviation and aerospace fields for part wall thickness and aerodynamic performance.

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