Hydroforming die for the production of a hollow workpiece from two metal sheets

摘要

The mould tool has a hollow space defined between cooperating upper and lower tool parts (1,2) between which 2 sheet metal plates (3,4) are clamped at their edges, with a high pressure forming medium supplied to the gap between the sheet metal plates via a pressure medium feed (8,12,13) provided in part by a pair of counter-rotating discs in each tool part, allowing a linear displacement of the pressure medium feed.