Nibbelwerkzeug

摘要

In a follow-up slotting tool for continuously punching workpiece (W) fed between a punch (3) and a die unit (5) at a predetermined pitch, the punch (3) is formed with a shear angle ( alpha ) at a lower end surface thereof in such a way that a front end of the punch is cut into the workpiece but a rear end thereof is not cut into the workpiece when lowered at a predetermined downward stroke; and the die unit (5) is provided with a counter member (15) for raising a residue (WA) partially cut away from the workpiece, after the punch has been lowered at the predetermined downward stroke, and with a cutting edge (21) for cutting off the partially cut away residue (WA) raised by the counter member in cooperation with the punch, when the punch is lowered at the succeeding predetermined downward stroke. The follow-up die can form an elongate slot, without forming any stepped portions at the junction portions of the workpiece, in spite of a relatively large pitch of the follow-up cutting processing of workpiece W.