taivutustaulukko

A taivutustaulukko, often translated as a bending table or bending chart, is a reference tool used primarily in sheet metal fabrication and engineering. It provides information on how sheet metal will behave when bent to specific angles and radii. The primary purpose of a taivutustaulukko is to predict and compensate for springback, a phenomenon where the metal partially returns to its original shape after the bending force is removed.

These tables typically list material type, thickness, bend angle, bend radius, and the required tooling (punch and die). By consulting the taivutustaulukko, fabricators can determine the appropriate "air bending" or "bottom bending" parameters to achieve the desired final angle. The data within these tables is usually derived from experimental testing and material properties. Different materials, such as steel, aluminum, and stainless steel, exhibit varying degrees of springback, and the taivutustaulukko accounts for these differences.

The use of a taivutustaulukko helps to reduce trial and error in the bending process, leading to increased efficiency, accuracy, and material savings. It is an essential resource for setting up press brakes and ensuring consistent results in sheet metal bending operations. Manufacturers often provide their own specific bending charts tailored to their machinery and material specifications.