Punching yoke

摘要

The lower arm(3) of the yoke is detachably fastened, and has fitting strips, holes, and locking connections. The lower arm has a cross section of more or less constant area over its whole length. The lower arm may taper away towards its forward end. The forward end of the upper leg has a punch(10). The yoke is provided with a support leg(17) with a foot(18) extending in the direction of the end(4) of the lower arm. The cutting tools are installed on the upper arm of the yoke.