Attapulgite coarse crushing cutter

The invention discloses an attapulgite coarse crushing cutter, which comprises a cutter head and 3-6 sets of combined tool bits, wherein the cutter head is in a circular table form; a mounting hole combined with a roll shaft is formed in the center part of the cutter head; dovetail block bodies which are matched with the combined tool bits in quantity are arranged on the cylindrical surface of the cutter head; the dovetail block bodies are evenly distributed around the cylindrical surface of the cutter head; each combined tool bit comprises a primary tool bit and a secondary tool bit; each primary tool bit comprises an attapulgite crushing head and a connecting body; each secondary tool bit is a plate-shaped body; a bump which is matched with a limiting groove in the attapulgite crushing head is arranged on the top surface of each secondary tool bit; the bottom surface is an arc surface matched with the cylindrical surface of the cutter head; the front surface is a working surface; a cycloidal tooth and a cycloidal groove are formed in the working surface; each secondary tool bit is fixedly arranged on the bearing surface of the connecting body in each primary tool bit, and is located below each attapulgite crushing head; each secondary tool bit is detachably connected with each primary tool bit; various combined tool bits are respectively arranged at the positions, with the dovetail block bodies, on the cylindrical surface of the cutter head, are fixed through baffle plates and bolts, and are detachably connected with the cylindrical surface.