Positioning device for cutting of elliptical groove of cable conduit

The invention provides a positioning device for cutting of an elliptical groove of a cable conduit. The positioning device for cutting of the elliptical groove of the cable conduit comprises a tower column, a stiff skeleton; the cable conduit; an adjusting mechanism which is fixedly connected with the stiff skeleton and comprises a first supporting rod, second supporting rods, fixing sleeves, screw rods, fixing rods and connecting rods, wherein the first supporting rod and the second supporting rods are fixedly connected into the stiff skeleton, the cable conduit abuts against the side wall of the first supporting rod, the side walls of the second supporting rods are fixedly connected with the connecting rods, the interiors of the connecting rods are in threaded connection with the screw rods, the top ends of the screw rods are fixedly connected with the fixing sleeves, the interiors of the fixing sleeves are rotationally connected with the fixing rods, and the fixing rods abut against the side wall of the ca