The utility model discloses an ink production material grinding machine, comprising a frame, wherein the top center of the frame is provided with a grinding box, the top side of the grinding box is provided with a feed port, the bottom side of the grinding box is provided with a discharge port, one end of the grinding box is fixed with a gear box, the gear box is fixed with three grinding rollers located inside the grinding box, one end of the gear box is fixed with a driven gear, the top side of the frame is provided with a rotating motor, the output end of the rotating motor is provided with a driving gear, and the driving gear is connected to the driven gear through a transmission belt. The utility model has a novel structure and ingenious conception. The tensioning wheel drives the transmission belt to be tensioned, which can effectively improve the transmission efficiency of the transmission belt, prevent the transmission belt from idling and affect the grinding efficiency of the grinding machine. In addition, the tensioning wheel is used to loosen the transmission belt, which is convenient for the quick replacement of the transmission belt.