Technological providing accuracy of parts at cold punching

Calculation-analytical way to determine accuracy in technological processes of cold punching, is presented. Approaches to optimize and reach an ultimate accuracy, including those at axisymmetric deforming due to the reduction of the initial blank thickness, are described. Calculated data for the tolerance of parts with different diameters at a certain random thinning for the case of developing a tool in accordance with both the conventional method and that of considering systematic errors, are presented. Peculiarities and possibilities to reach the ultimate accuracy, are shown.