Bending machine

A bend arm (15) is mounted on a base frame (10) for turning movement. The bend arm is provided with a bend die (16) and a work is clamped to the bend die by a clamp die (18). A drive arm (26) is also mounted on the base frame for turning movement and is connected to the bend arm by a link (30). The bend arm is turned by the turn of the drive arm via the link and the work is bent by the turn of the bend arm on the model of the bend die. The distance from the center of turn (01) of the drive arm to the connection point (31) of the link to the drive arm is longer than that from the center of turn of the bend arm to the connection point of the link to the bend arm. Furthermore, the former distance is longer than the distance from the center of turn of the bend arm to the center of turn of the drive arm. Thus, the bend arm can be turned beyond 180 DEG by the turn of the drive arm by an angle less than 180 DEG