Device for the regulation of the lower holder pressure, and for lubrication in the case of deep drawing

摘要

Cylinders (3) are located in the force flux between the holding-down component (4) and drawing die (6). The cylinder chambers are connected by bores (13,14) or lines to openings (2) for the bearing face of the drawn part (7) on the drawing die or holding-down component, esp. recesses introduced tangentially to the drawing radius (15) of the drawing die. The cylinders and the openings for the bearing face of the drawn part are charged simultaneously with pressure by a pressure or lubricant flow. This may be supplied in the working stroke.