Biegeformen

Biegeformen are tools or templates used to shape a workpiece by bending it along a predefined curve. They function as a form or former that defines the outer shape of the bend and are typically used in conjunction with a punching tool or press to achieve a precise radius, angle, and curvature. Biegeformen are employed across several industries, including metalworking, woodworking, and plastics forming, where repeatable and accurate bends are required.

In metalworking, bending forms are part of the die-set used for sheet metal or tube bending. The form provides the desired bend radius, while a matching punch or pressure applies the force. The process is governed by material thickness, bend angle, and the chosen radius, with attention paid to springback and tool wear. In woodworking, bending forms (often called formers) are used in steam bending to shape wood into curves for components like rails, boat ribs, or furniture elements; the timber is heated and pressed against the form until it sets in the desired shape. In plastics forming, bending forms serve as guides or molds for reshaping thermoformed or hot-bent plastic parts, ensuring the correct curve and surface finish.

Construction and materials of Biegeformen vary with application. Forms can be made from hardened steel, tool steel, aluminum, wood, or composites, chosen for stiffness, wear resistance, and compatibility with the workpiece material. Key design considerations include the bend radius, tolerances, surface finish to prevent marking, accessibility for loading/unloading, and ease of form changeover for different curves.

In German-language technical literature, Biegeformen denotes the general concept of bending forms used to produce defined curves in various forming processes.