Research on influence of material properties and blank geometry on forming force in fine blanking process

Abstract

Fine blanking produces smooth sheared edges over the full workpiece thickness in a single operation allowing the required cut edge quality and dimensional accuracy to be obtained without secondary machining. There are various parameters with different adjustment levels, affecting the fine blanking surface. In this study, the effect of blank geometry and material properties on forming force in the fine blanking process was studied by the theoretical formulation and an experimental approach. Tensile strength and initial blank thickness were considered in this research. The results obtained indicate that by increasing initial blank thickness and tensile strength, forces in fine blanking process are increased.

Keywords:

• Fine blanking force
• Tensile strength
• Blank thickness
• Theoretical calculation

The authors would like to thank Andisheh Imeni Khodro Company (Babolsar), Iran for the provision of valuable information and product data.