Abstract: The present invention is a cut-off unit with constant chip volume cutting for machine tools. The cut-off unit maintains a constant chip volume during cutting, which stabilizes friction between the blade of the cutting disk, the teeth of the cutting disk and the chips in between the teeth. In this manner, the working life of the blade and the speed metal bars at the cut-off unit can be controlled for extending the working life of the blade and for increasing the efficiency of time required for cutting or shearing at the cut-off unit. Advancement speed of the cut-off unit, which is guided by a logic-control unit, is continuously and regularly adapted, to keep the volume of chip cut away and accumulated in each gap between the teeth of the blade constant. When cutting a bar, the advancement speed will be higher at the beginning and at the end of the cut, and lower in the central part.

Abstract: Constant chip volume cutting system for machine tools, which includes at least one cut-off phase of a tube or round bar, in which the advancement speed of the cut-off unit, which is guided by a logic-control unit, is continuously and regularly adapted, to keep the volume of chip cut away and accumulated in each gap between the teeth of the blade constant, due to the fact that, when cutting a bar, the advancement speed will be higher at the beginning and at the end of the cut, and lower in the central part.