The wall of conical and tapered components can be reduced to the desired wall thickness profile in a single pass.
1. Setting the process in motion:
A preform (or circular blank) is clamped onto the end of the shear-forming tool by a pressure plate. The spindle and workpiece start to rotate.
2. Shear forming:
The shear forming rollers are applied close to the center of the preform or circular blank. The combination of pressure and friction causes axial flow of the material. The pressure exerted by the rollers plastically deforms the material and forms the workpiece in a single pass. The achievable wall thicknesses are dependent on the initial material thickness and are defined mathematically by the sine law.