Chis Cleaver has developed prototype 12-axis machine with a novel tooling arrangement for rolling of shaped rings. Rings of up to 1m diameter are cold rolled in soft aluminium and lead with a variety of inner and outer radial profiles. The project builds on experiments with an earlier flexible ring rolling machine for rolling modelling clay and finite element simulations of the process.
In addition, a novel sensing technique has been developed under the closed loop control of metal forming processes project. This has enabled production of rings with variable wall thickness and curvature around the circumference for the first time.