Influence of strip materials on behavior of incremental in-plane bending

Incremental in-plane bending that has been invented by authors is a new and flexible manufacturing technology for small-lot production of strip with various bending radii. The strip is bent incrementally by an inclined punch beating. The prototype incremental bending machine uses the numerical control technology and bends the strip flexibly. The strip material is an important condition for in-plane bending. The bending experiments are carried out and some experimental results such as beating force, bending radius, strain distribution are experimentally examined. The forming properties of in-plane bending are clarified in this study. Moreover, the approximate formulas for calculation the bending radius are proposed. The bending radius calculated by the proposed formula agrees with one of the experiments.