ANALYSIS OF ELLIPTICAL SHEET BENDING USING A FOUR-ROLLERS MACHINE

<p style="text-align: justify;">Sheet metal bending is one of the most important plastic metalworking processes. This process is widely used in various industries such as the automotive, aircraft, shipbuilding and construction industries. The efficiency and precision of bending significantly affect the quality of the final product, as well as the cost-effectiveness of production. This paper investigates the process of elliptical sheet metal bending on rollers. Using analytical methods and experimental tests, optimal operating conditions were determined that allow achieving the desired bending radius with minimal deformation and errors. Special focus was placed on the influence of the K factor on the final result. The research results can contribute to a better understanding of the process and the improvement of production methods in the metalworking industry, especially when it comes to nonstandard processing. The paper proves how the construction of an ellipse  with three diameters gives the best bending results.</p>