This product adopts a set of steel toothed roller rough rolling, and a set of steel rubber roller conventional finishing rolling or finishing rolling after stamping with a dumbbell knife. The finished rolled specimen avoids mechanical damage to the surface of the specimen, enabling it to fully comply with the requirements of GB/T2951 standards. This machine also adopts a series of technologies to ensure that the blades can be placed horizontally and can be replaced without regrinding, fully complying with the operating principles of the equipment used for sample preparation in GB/T2951.