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Press brake tooling and sequencing · Lesson 2 of 4

Press brake tooling and sequencing: materials, standards and design constraints

How thickness picks the die, how the metal changes the radius and springback, what force a bend takes, how grain, temper and paint limit a bend, and the limits that govern AFS orders.

You will be able to: Choose a starting die from the thickness, predict the radius, minimum flange, tonnage and springback for the metal in hand, and tell published press-brake values from AFS's own limits.

11 min · 9 slides · 10 questions

All lessons in this module
Slide 1 of 9

Videos for this lesson

What this video shows: Wilson Tool explains using an air bend force chart to choose the die V opening and keep the tool selection safe.

Video: Using an Air Bend Force Chart | Bending | Technically Speaking by Wilson Tool International, on YouTube. Chosen from the video's published description.

Glossary

Material factor
Tensile strength in psi divided by 60,000: the multiplier for metals stronger or weaker than the baseline steel.
Method factor
Bystronic's multiplier for the bending method: 1.0 air, 5.0 or more bottoming, 10.0 or more coining.
Minimum flange
The shortest flange that still spans the die shoulders: about 70 percent of a standard V die's width.
Sharp bend
A bend made with a punch nose sharper than the smallest air-bent inside radius, about 63 percent of the thickness in mild steel, which creases the metal instead of forming a radius.
Rolling direction
The direction the sheet ran through the mill; aluminum bends cleaner with the bend line across it.
T-bend rating
A coating maker's bend rating for painted sheet, such as T-3T with no loss of adhesion.