Method for producing a cup-shaped sheet metal item

摘要

The method involves forming a groove non-cuttingly on an outer side of an annular circumferential wall. A set of pressing tool segments (31, 32) having a part-annular projection is delivered to the circumferential wall. A perform of the groove is formed. Another set of pressing tool segments (41, 42) is delivered to the circumferential wall with a part-annular projection and rotated related to the circumferential wall at a twisting angle of about 90 degrees. A metal sheet workpiece (10) is transported from a pressing tool (30) to another pressing tool (40).