STANZVORRICHTUNG FÜR STAHLSTÄNDER

摘要

An apparatus for punching knock-outs out of light gauge steel framing studs used in building construction to form holes of sufficient size to allow building wiring and piping to extend therethrough includes a compact hand held frame (12) having a generally C-shaped frame portion (14). The C-shaped frame portion has spaced apart ends (16, 18) located along a working axis (20) for receiving a stud (30) therebetween. A punch and die assembly (24) includes a punch (26) and a die (28) mounted opposite each other at the ends of the C-shaped frame portion. An actuatable driving mechanism (36) mounted to the frame is operable to drive the punch and dic assembly over a working stroke range between a deactuated position (52) and an actuated position (54). In the actuated position, the punch extends into the die by punching through the stud to produce a knock-out (342).