Patent ID: 8701532
Filing Date: 2014-04-22
Classification: B21D,Y10T

Abstract:
1. A method comprising: removing material from a die that forms a bore defined by a sloped sidewall along a punch entry direction and thereby changing a location of a cutting edge of the die along the punch entry direction and thus increasing a size of the cross-section of the cutting edge of the die in a plane that is perpendicular to the punch entry direction; and assigning to the die a punch for cooperating with the die or a workpiece thickness that can be processed by the die, wherein the assignment of the punch or the workpiece thickness to the die is based, at least in part, on the increase of the size of the cross-section of the cutting edge of the die in the plane that is perpendicular to the punch entry direction such that, after removing the material from the die, the punch assigned to the die has a larger diameter than a punch that was assigned to the die before removing the material from the die and/or such that, after removing the material from the die, the workpiece thickness assigned to the die is larger than a workpiece thickness that was assigned to the die before removing the material from the die.