A bending machine with a cam made up of two articulated arms, comprising a main roller that is coaxial with the axis of articulation of the arms, the end of the short portion of each one of the arms having means for exerting a bending force on a rod, wherein the means are made up of eyelets, each one of the eyelets being mounted on the end of the short portion of one of the arms in a rotatably mobile manner about an axis parallel to the axis of the main roller.