A useful for the deep embutition of precision of cylindrical metal pieces. (Machine-translation by Google Translate, not legally binding)

摘要

A tool for precision deep drawing of cylindrical metal parts, from sheet metal discs, characterized in that said drawing is carried out in a single operation and without the need for thermal treatments of annealed or normalized intermediate or final distension and resulting parts high precision tubular inlays in their interior and exterior diameters, as well as in wall thicknesses and being able to reach and exceed a ratio between length to diameter of embedded piece of 3 to 1 respectively. (Machine-translation by Google Translate, not legally binding)