Patent ID: 8181501

Claim:
A tool for rammer die-cutting an annular part comprising: a lower insert holder with a disc-shaped lower die, the lower die including a first die-cutting annular recess and a first bore provided at a center of the lower die; an upper insert holder with a disc-shaped upper die, the upper die including a planar interior face, a second die-cutting annular recess, coaxial with the first die-cutting annular recess, provided in the interior face, the second die-cutting annular recess including first and second side surfaces extending towards the upper insert holder and a connecting surface that connects the first and second side surfaces, and a second bore provided at a center of the upper die, the lower insert holder cooperating with the upper insert holder such that the first and second die-cutting annular recesses define an annular recess therebetween with an axis perpendicular to a plane of the lower and upper dies; and a column arranged between the lower die and the upper die and guiding the part and restricting side motions of the part while the part is lifted from the lower die, wherein a lower part of the column is engaged in the first bore in the lower die, and wherein the column directly faces the annular recess defined by the first and second die-cutting recesses when the lower insert holder cooperates with the upper insert holder.