Tubular hollow body producing process involves stamping workpiece from sheet, bending it in a countersink bending device and shaping bent workpiece in press tool

摘要

The tubular hollow body producing process involves stamping a workpiece from sheet to produce a cutout of width slightly greater than the intended circumference; bending the workpiece in a bending device in the form of a countersink, bending it further in another bending tool and shaping it in a press tool to form the finished hollow body (1).