Effect of Isostatic Pressing Support on Forming Force in Single Point Incremental Forming

Abstract

Single point incremental forming has no support on the back of the sheet, which leads to the defects such as sheet instability and poor forming accuracy. In this paper, isostatic pressing technology is introduced into single point incremental forming process to provide effective support for the back of sheet metal. Taking cone parts with 1060 aluminum as the research object, the forming force under different static pressure parameters was analyzed by finite element analysis and experimental study. The results show that the horizontal forces F_x and F_y increase slightly under static pressure. The axial force F_z has a relatively large change, and with the static pressure increasing, the axial force increases significantly. The experimental equipment of isostatic pressing single point incremental forming was designed to obtain the forming force variation under different static pressing conditions. Compared with the simulation results, the accuracy of the finite element model was verified.

Keywords:

• Isostatic pressing
• single point incremental forming
• forming force
• finite element simulation

Additional information

Funding

This project is supported by Natural Science Basic Research Plan in Shaanxi Province of China(Program No.2021JQ-795, No.2021JQ-796), Xi’an Science and Technology Plan Innovation Fund "Arts and Sciences Special Project"(Program No.2021XDJH24), The Youth Innovation Team of Shaanxi Universities (Intelligent Remanufacturing Technology Innovation Team).