Clearance Formula:
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Definition: This calculator determines the proper clearance between steel dies based on material thickness and a clearance factor.
Purpose: It helps metalworking professionals and manufacturers set optimal die clearances for punching, blanking, or forming operations.
The calculator uses the formula:
Where:
Explanation: The material thickness is multiplied by a percentage factor to determine the optimal die clearance.
Details: Correct clearance ensures clean cuts, reduces burrs, extends tool life, and minimizes required punching force.
Tips: Enter the material thickness in mm and clearance factor (default 0.1 or 10%). The factor should be between 0.05 and 0.15.
Q1: What's a typical clearance factor?
A: For most steel materials, 10% (0.1) of thickness is standard, but this varies by material type.
Q2: When would I use a different factor?
A: Use lower factors (5-8%) for brittle materials, higher factors (12-15%) for ductile materials.
Q3: Is this per side or total clearance?
A: This calculates total clearance. For per-side clearance, divide by 2.
Q4: Does this apply to all materials?
A: The formula works for metals, but factors differ for aluminum (8-12%), stainless steel (12-15%), etc.
Q5: How critical is precise clearance?
A: Very critical - improper clearance can cause excessive burrs, reduced tool life, or material deformation.