Why does bending angle variation occur during production?

Bending angle variation is a common issue in sheet metal forming and is usually caused by material thickness variation, differences in material strength, press brake deflection, improper V-die selection, or tooling wear. These factors can affect the bending force and springback, resulting in inconsistent bending angles along the workpiece.

To minimize these issues, Bendmax manufactures high-precision press brake tooling using premium 42CrMo alloy steel, combined with controlled heat treatment processes. The tool body hardness is maintained at HRC 30–35, while induction hardening increases the working surface hardness to HRC 54–60, ensuring stable performance and long service life.

In addition, Bendmax provides engineering support to help customers select the correct punch, die opening, and tooling configuration, helping achieve consistent bending angles and improved production efficiency.