1101 曲率を有する厚板材のバーリング加工における成形性及び破壊条件

概要

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In this study, forming characteristics of hole flanging on curved thick metal plates are investigated experimentally and by FEM. The test material is pure aluminum A1050. Blank thickness, pre-hole diameter and inner diameter of the die are varied, and the effect of shaping the boss by hole flanging is examined under the above conditions. There are three ways of shaping bosses by hole flanging on thick metal plates, that is, shaping by ironing the outside of the boss, shaping without ironing and shaping with fracturing. The results of this study are shown that these three types can be classified by the relationship between the sizes of the tools and the blank. It is clear that the desired forming height in hole flanging can be obtained by the relationship between the clearance and the diameter of the pre-hole. In addition, the prediction of fracture is analyzed by FEM simulation.
一般社団法人日本機械学会の論文
2002-03-14