Industrial application of surface area calculating system (SACS) in non-axisymmetric deep drawing process

The application of the surface area calculating system (SACS) to non-axisymmetric deep drawing process has not been published yet. In this research, therefore, a SACS for non-axisymmetric deep drawing products with elliptical shape was constructed for a design of blank shape of deep drawing products by using an AutoLISP function of AutoCAD software. The system developed in this paper is composed of an input geometry recognition module to recognize non-axisymmetric products, a three dimensional (3-D) modeling module to calculate the surface area for non-axisymmetric products, and blank design module to determine a blank shape, respectively. The production rules were generated and upgraded by interviewing with industrial field engineers. The suitability of this system was verified by applying to a real deep drawing product. The SACS constructed in this work would be very efficient to reduce lead-time for manufacturing and design.