Transactions of Materials and Heat Treatment

Title：Study on critical forming angle in progressive forming with punch support for 1060Al plate conical frustum parts

Authors： Jin Zhihao Gao Jinzhang Zheng Lukai

Unit： 1. Jiangsu Key Laboratory of Advanced Metallic Materials School of Materials Science and Engineering Southeast University 2. College of Mechanical Engineering Nanjing Institute of Technology

KeyWords： conical frustum part progressive forming punch support critical forming angle conical frustum diameter

ClassificationCode：TG379.6

year,vol(issue):pagenumber：2022,47(6):99-106

Abstract：

Based on ANSYS/LS-DYNA analysis platform, the finite element model of punch supported single pass progressive forming conical frustum part was established, and its critical forming angle of wall thickness uniformity was studied by numerical simulation and experimental methods. Then, for the conical frustum part with the height diameter ratio of 0.5, the critical forming angles with different conical frustum diameters and original blank thicknesses were studied, and the influences of conical frustum diameter and original blank thickness on the critical forming angle were analyzed. The results show that the critical forming angle decreases gradually with the increasing of original conical frustum diameter and increases with the increasing of blank thickness. The calculation formula of critical forming angle with respect to original blank thickness and conical frustum diameter is solved by multiple linear regression. According to the experiment verification, the critical forming angle of conical frustum can be quickly obtained within a certain range, which provides a basis for process design of parts with uniform wall thickness distribution in actual production.

Funds：

先进数控技术江苏省高校重点建设实验室开放基金资助项目（KXJ05017）

金志浩（1996-），男，硕士研究生 E-mail：jzh192039@sina.com 通信作者：高锦张（1963-），男，硕士，副教授 E-mail：101005299@seu.edu.cn

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