Views: 0 Author: Site Editor Publish Time: 2025-05-29 Origin: Site
Metal stamping is a cold-forming process where a flat sheet metal blank is placed into a stamping press and shaped using a die. The press applies tremendous force (from a few tons to thousands of tons) to punch, bend, or stretch the metal into the desired shape.
✅ High production speed (hundreds of parts per minute)
✅ Excellent dimensional accuracy (±0.1mm or tighter)
✅ Low material waste (nested blanking reduces scrap)
✅ Suitable for mass production
Stamping operations can be categorized into two main types:
These operations remove material from the sheet metal.
Blanking – Cutting out a flat shape (e.g., washers, gears).
Punching – Creating holes in the metal (e.g., ventilation slots).
Trimming – Removing excess material from formed parts.
Notching – Cutting small sections from the edges.
These operations reshape the metal without cutting it.
Bending – Creating angles or curves (e.g., brackets).
Deep Drawing – Forming cups or shells (e.g., cans, automotive panels).
Flanging – Bending the edge of a part (e.g., pipe fittings).
Embossing – Creating raised or recessed designs (e.g., logos).
A stamping die consists of:
Punch (upper part that applies force).
Die (lower part that shapes the metal).
Stripper plate (holds the sheet in place).
Guide pins (ensure alignment).
Ejector system (removes the finished part).
Single-operation die – Performs one action (e.g., punching).
Compound die – Combines multiple operations in one stroke.
Progressive die – Performs multiple steps as the metal strip feeds through.
| Defect | Cause | Solution |
|---|---|---|
| Burrs | Worn or misaligned dies | Sharpen or replace dies |
| Cracks | Excessive stretching | Optimize blank holder force |
| Wrinkling | Insufficient blank holder pressure | Adjust pressure or add draw beads |
| Springback | Elastic material recovery | Use overbending or compensation design |
Smart Stamping – AI-driven process optimization.
High-Speed Stamping – Faster production for electronics.
Lightweight Materials – Aluminum & high-strength steel forming.
Additive Manufacturing (3D Printing) – Hybrid dies with conformal cooling.
Metal stamping remains a core manufacturing process due to its speed, precision, and versatility. By understanding the different techniques, die designs, and defect prevention methods, manufacturers can improve efficiency and product quality.
