Blanking is a high‑speed sheet‑metal cutting process where a punch pushes the material through a die to create a part and a scrap piece (the blank). The gap between punch and die, called the clearance, must be carefully controlled to avoid excessive burrs or premature tool wear.
The appropriate clearance depends primarily on the material’s ductility and the sheet thickness. More ductile materials such as aluminum require a larger clearance, while harder steels need a tighter gap. Manufacturers therefore use a material‑specific factor (K) that is multiplied by the thickness (t) to obtain the optimal clearance.
By applying the simple linear relationship, engineers can quickly calculate the required clearance for any standard material and thickness, ensuring consistent quality across production runs.
What is die clearance in blanking?
How does material ductility affect die clearance?
What factors determine the appropriate die clearance?
Why is controlling die clearance important in blanking?
Can you provide a general guideline for die clearance?
Results are for informational purposes only and do not constitute professional advice.