Patent ID: 9610697
Date: 2017-04-04
CPC Classifications: B21D,B23P,B26F,C21D,Y10T

Claim:
1. A stamping tool formed from a steel strip having a height extending between a first narrow side and a second narrow side, and a longitudinal extension transverse to the height and a thickness in a width direction perpendicular to the height and the longitudinal extension, the first narrow side being shaped with a cutting part having a cutting edge, the stamping tool comprising: a back part on the second narrow side of the steel strip having deformed regions and undeformed regions; the undeformed regions located between the deformed regions; the deformed regions forming recesses extending in the longitudinal extension direction that have been shaped in a chipless manner in the back part, and wherein the recesses have bottoms located at a depth t below the undeformed regions, and the bottoms of the recesses have thicknesses in a width direction perpendicular to the height and the longitudinal extension greater than thicknesses in a width direction perpendicular to the height and the longitudinal extension of the undeformed regions at the depth t.