Patent ID: 9168579
Filing Date: 2015-10-27
Classification: B21D,Y10T

Abstract:
1. A punching tool comprising: a punching stamp comprising: a first adjustment ring defining a first center opening configured to receive the stamp shaft, the first center opening defining a radial recess that extends inwardly from a first lower surface of the first adjustment ring and that is formed complementary to and configured to abut the circumferential step of the axial stop, wherein a first mark is located along the upper cylindrical portion of the stamp shaft adjoining the axial stop, and at least a portion of the first mark remains visible when the first adjustment ring is abutted against the circumferential step and the circumferential extension projecting radially outward from the circumferential step, such that a proper assembly of the first adjustment ring with the stamp shaft can be verified; and a second adjustment ring defining a second center opening configured to receive the stamp shaft, the second adjustment ring comprising a second lower surface that is not formed complementary to the circumferential step of the axial stop, wherein a distance between the first mark and the circumferential extension of the axial stop is less than or equal to a sum of a thickness of the second adjustment ring and a height of the circumferential step of the axial stop, such that the first mark is covered by the second adjustment ring when the second adjustment ring is abutted against the circumferential step of the axial stop.