Accuracy of Components during Single Point Incremental Forming

Abstract

The use of computers in manufacturing has enabled the development of several new sheet metal forming processes, which are based upon older technologies. This report describes the literature survey of SPIF and conclusion of literature. In sheet forming inaccuracies occur due to the spring back of sheet and the residual stresses in the sheet that deforms the component shape after the process is complete. The effect of variations of process parameters on the final accuracy of components is studied by varying the incremental depth and radius of tool in three stages. To make SPIF feasible for large scale production, multiple features are formed on single plate. Two types of measurements of components were done to study the component accuracy on Coordinate Measuring Machine (CMM). First measurement is done when the sheet is clamped between the flanges and the second one when sheet is not clamped in the flanges. One more innovative idea of measurement of component at the end of program is also successfully implemented with the help of casting the component shape on the Plaster of Paris. To validate the experiment results modeling of SPIF in done in the symbol Shakti software with the bond graph approach and successfully validated the process SPIF. The thickness variation is also studied during the forming at various heights. The deformation occurs due to the localized heat of sheet. Recent advances have enabled this localized deformation to be accurately controlled and studied. Current developments have been focused on forming parts using CNC technology, without the need for costly dies. Single point Incremental Forming has the potential to revolutionize sheet metal forming, making it accessible to all levels of manufacturing.