• Prashant Khanna

Due to the demand of complex products, the development in the CAD/CAM programs is increasing. Various processes requiring CAD/CAM cycle also needs to be improved in order to justify the increasing complexity. In the field of sheet metals, the development of prototype needs to be faster, cheaper and better. Since all the sheet metal processes require expensive tooling, machinery and labor, the process of incremental sheet metal forming is developed to improve rapid prototyp ing of the complex parts. Incremental sheet metal forming (ISMF) is a looming sheet metal process, which does not demand any given die for action. It is a flexible process and its simplicity is to produce complex shapes using just a round tipped too l, a clamping device and a CNC machining center. In this paper, the main focus is kept on using a force model for predicting the forming force developed during SPIF of polycarbonate sheets. The theoretical force values are coming out to be in good agreement with the experimentally obtained force values with an overall error of 8.29%. In addition to this work, the effect of 4 major incremental forming parameters (i.e. wall angle, sheet thickness, tool diameter, and step depth) on the forming force i s analyzed. It is observed that the step depth and the sheet thickness have major influence on the forming forces.

Incremental forming, force analysis, forming force, polycarbonate sheets

"Analyzing the effect of Forming Force in Single Point Incremental Forming (SPIF) of Polycarbonate Sheets", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.436-442, May 2019, Available :http://www.jetir.org/papers/JETIRCQ06082.pdf

"Analyzing the effect of Forming Force in Single Point Incremental Forming (SPIF) of Polycarbonate Sheets", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp436-442, May 2019, Available at : http://www.jetir.org/papers/JETIRCQ06082.pdf