Study of Spring back Effect and Improvement of the Geometric Accuracy in Spif Process

Abstract

Single Point Incremental Sheet Forming (SPIF) process is a recent development in sheet metal forming industry. The process has advantage of high formability, flexibility and low tooling cost. However, the process is suffering the drawback of poor accuracy. In the present work, effect of tool diameter and step depth on geometric accuracy and pillow defect have been studied. For the experimental work AA1100-F aluminum sheet is used. Annealing process has been performed on each blank before carrying out experiential work. By using electronic edge finder geometric accuracy and pillow defect have been measured in clamped position on VMC machine. FEA analysis is also performed using LS-DYNA Software.