Development of a CAD/CAM system for simulating closed forging process using finite- element method

摘要

Purpose - The purpose of this paper is to study the effect of the height and diameter of the dies asrnwell as work-piece dimensions, on stresses and strains on dies in the forging process. This helps inrndeveloping a better understanding of the effect of process parameters. As a result, the manufacturingrntask could be accomplished with minimal number of trials.rnDesign/methodology/approach - After determining the most influencing parameters on thernforging process, the mechanical part is drawn, size of initial billet and shape of punch and die are alsorndetermined to build a finite-element model to represent the process. Several outputs are taken as anrnindication for die wear and process performance. Finally, a computer numerical control (CNC) code tornmanufacture the selected die is generated.rnFindings - It was found that when the die diameter increases, the effective stress decreases. Onrnother hand, it was found that the work required to finish the forging process is highly affected by therndimensions of work-piece. Therefore, it is possible to save power if work-piece dimensions arernadjusted.rnOriginality/value - This paper was meant to be a universal step or guide in developing a computerrnaided design/computer aided manufacturing (CAD/CAM) system to design, simulate, andrnmanufacture molds for the forging process using a statistical method.