Effect of Tool Geometry Parameters on the Formability of a Camera Cover in the Deep Drawing Process

Area of Science:

• Materials Science
• Manufacturing Engineering
• Mechanical Engineering

Background:

• Deep drawing is crucial for manufacturing metal parts, but defects like thickening, stretching, and splitting can occur.
• Material properties, equipment, metal flow control, and tool parameters significantly influence deep drawing formability.
• Optimizing tool geometry is key to defect reduction and improved product quality in metal forming.

Purpose of the Study:

• To investigate the formability of aluminum alloy A1050 camera covers in deep drawing.
• To analyze the impact of tool geometry parameters on defect formation and material behavior.
• To optimize tool parameters for improved thickness distribution and reduced defects.

Main Methods:

• Numerical and experimental analyses were employed to study the deep drawing process.
• The study focused on examining the relationship between tool geometry parameters and formability.
• Specific attention was given to thickness distribution, stress concentration, and deformation modes.

Main Results:

• The smallest thickness and highest stress were observed at the bottom corners due to biaxial stretching.
• Optimized tool parameters effectively prevented flange thickening, side wall stretching, and bottom corner splitting.
• Optimal tool design involved specific ratios for die edge radius (10x sheet thickness), die pocket radius (5x sheet thickness), and punch nose radius (2.5x sheet thickness).

Conclusions:

• Tool geometry optimization is essential for controlling thickness distribution and stress in deep drawing.
• The study successfully demonstrated defect prevention and quality improvement through optimized tool parameters.
• Experimental results showed a maximum thinning of 25%, well within the acceptable industrial limit of 45%.