Theory of bending

The principle of bending in itself is not very difficult to understand. And yet a lot of know-how and skills are required if the technique is to bring maximum productivity and quality. Ultimately, it is primarily a combination involving the geometry of the top tool (with the punch angle and punch tip radius the most important parameters), the geometry of the bottom tool (the width of the V opening, the V angle and the bending radii of the V opening in particular), and the pressing force and speed of the press brake. Naturally, all of these as related to the nature and thickness of the material and the desired bend angle and bend radius of the product. The choice of tool material is another aspect that must be considered. In order to fully understand all of this, we will briefly dive into the theoretical background of bending.