THE EFFECT OF TECHNOLOGY PARAMETERS ON THE SIZE OF THE "EAR" WHEN DEEP DRAWING FOR THE FIRST TIME OF ANISOTROPIC CYLINDRICAL USING SIMULATION

Abstract

Anisotropy is an inherent property of sheet materials, especially cold-rolled sheets. When stamping cylindrical parts, these plates always appear "ears" on the mouth of the part, that is, the height of the part is uneven in different directions compared to the rolling direction. Accurately predicting the size of the "ear" when stamping is important for the design of the technology to manufacture cylindrical parts. This article studies the influence of technological parameters including the tool clearance, the coefficient of contact friction and the blank holder force on the "ear" size when deep drawing cylindrical parts from anisotropic materials SUS-304. The Taguchi planning method is used in which the material model is built on the basis of real material sample tensile tests. The results show the blank holder force (48.53%) has the greatest influence on the maximum "ear" height, followed by the coefficient of contact friction (38.71%) and the tool clearance (12.76%).