Abstract: To solve the problems of low automation and high labor intensity during casting riser removal in current casting industry, an adaptive cutting method using grinding wheel was studied. The automatic removal of casting riser was realized by the movement coordination of cutting machine and fixture. To ensure the cutting quality, the cutting machine compensated for the wear of the grinding wheel through automatic feeding so that the wheel always cut at its best cutting point. At the same time, a cutting model was established in SolidWorks and then imported into Adams to simulate the cutting process. The simulation results show that the cutting device can automatically remove the casting riser at the best cutting point, which verifies the rationality of the adaptive cutting method.