Piston workblank casting head continuous automatic sawing machine tool and continuous automatic sawing method

The invention discloses a piston workblank casting head continuous automatic sawing machine tool which comprises a machine tool body. A Z-directional running device is arranged on the machine tool body. The Z-directional running device is movably provided with an X-directional running device which is movably provided with a cutting motor pulling plate. The cutting motor pulling plate is provided with a cutting motor. A cutting tool bit is arranged on the main shaft of the cutting motor. The piston workblank casting head continuous automatic sawing machine tool further comprises a four-station rotating table arranged on the machine tool body. Four location pins are distributed uniformly on the table facet of the four-station rotating table along the circumferential direction. Two sets of clamps are arranged above the machine tool in a matching manner. According to the piston workblank casting head continuous automatic sawing machine tool, the continuous cutting of the piston workblank top riser and the side pouring gate can be achieved; the sawing position is accurate; the degree of automation is high; one person can manage multiple machines, thereby improving the working efficiency.