Rail-straightening machine

The invention discloses a novel rail-straightening machine capable of effectively improving a straightening dead zone of a rail, and avoids waste caused by cutting off the straightening dead zone. The straightening machine comprises a straightener roll system and a cold roll system, wherein the straightener roll system is arranged on a frame; the cold roll system is positioned at the output end of the straightener roll system on the frame and consists of at least one pair of cold rolls with line of centers vertical to the running direction of the rail; and roll gaps which can be passed through by the rail are alternately formed among the cold rolls. The rail-straightening machine creatively adds cold rolling equipment onto the prior rail-straightening machine so as to form the novel rail-straightening machine, and carries out cold rolling on the rail which is straightened by the straightener roll system through the at least one pair of the cold rolls with the line of centers vertical to the running direction