A Novel Approach to Deep Drawing Using Hybrid System and Pneumatic-Assisted Forming

This paper presents a novel Plunger-Integrated Hybrid System aimed at enhancing the efficiency and performance of deep drawing operations in metal forming processes. The proposed hybrid system strategically combines the mechanical strength of metals with the elastic flexibility of polymers, specifically polyurethane rubber, to improve formability and reduce spring-back, two critical challenges in conventional sheet metal forming. A novel two-stage forming technique is employed, an initial drawing operation using a larger radius with polyurethane rubber, followed by final radius formation using the same rubber in conjunction with a pneumatic cylinder. This integrated approach ensures uniform force distribution via the embedded plunger, significantly minimizing forming defects and enhancing the dimensional accuracy of the final components. The solution has been validated using Finite Element (FE) simulation methods, confirming its capability to produce high-quality parts suitable for both complex structural geometries and outer body panels in automotive and aerospace applications. Key benefits include: ~17% reduction in manufacturing costs through fewer tool trials, simplified tool design and reduced simulation iterations. Enhanced production rate and process repeatability. Lowered CO₂ emissions footprint by improving material usage efficiency