Cutter disc for milling machine

The utility model relates to a cutter disc for a milling machine. The cutter disc takes the shape of a ratchet wheel and comprises a cutter disc body with an outer end surface and a plurality of cutter mounting parts which are arranged at the periphery of the cutter disc body in a convex manner, wherein a main shaft positioning hole is formed in the cutter disc body; screws are arranged at cutter mounting parts; the screws are used for fixing cutters; the cutter mounting parts comprise a thick cutter disc mounting part and a thin cutter disc mounting part; the thick cutter disc mounting part and the thin cutter disc mounting part are arranged at an interval; the distance between the cutter mounted on the thin cutter disc mounting part to the main shaft positioning hole is smaller than that between the cutter mounted on the thick cutter disc mounting part and the main shaft positioning hole. The cutter disc has the benefits that workpieces of different thickness and machining intensities can be machined in different machining situations, not only is the manufacturing cost of the cutter disc body reduced, but also the hardness of the cutter disc is ensured as the surface of the cutter disc is subjected to hardness anodization treatment, the wearing resistance of the cutter disc is improved, and the service life of the cutter disc is prolonged.