|Project title||Investigation of a manufacturing process with several eccentric and non-circular cross sections trough a non-circular rolling operation (Unrundwalzen)|
|Project duration||01.04.2020 – 30.09.2022|
The non-circular rolling is a pressure forming method with material displacement normal to the rotational axis of the billet. It consists in workpiece forming by means of a wavy wedge tool segments fixed on a flat or concave plates of rolling mills. Here for the billet is positioned between two in the oppositely moving, wavy profiled plates and the cross section stays constant. The goal of this project is to roll a part with several out of round, eccentric and a combination of both forms in one forming operation. The out of round wedge rolling is a forming operation to optimize the mass distribution of a preform.
Publications about the project
IPH has developed an algorithm for the automated design of rolling dies in the DFG project "Non-Circular Rolling". The researchers are using it to perform extensive parameter studies with a wide range of dies.
Non-circular rolling, cross wedge rolling, rolling dies, design, automation, algorithm
Flat die rolling is a solid forming operation, in which two engraved tool plates run past each other and thereby form a cylindrical semi-finished product. The non-circular rolling can be used as a preform optimising process, where it should be possible to form local non-circular sections, for example ellipses or eccentrics, into a cylindrical semi-finished product. The material flow should be exclusively in radial direction. Initial simulations show that the requirements can be met.
non-circular rolling, cross wedge rolling, flat dies, preforms and intermediate forms, FEM
Tool- and Mold-Making, Forming technology