Grinding method of numerical control coordinate of cam

The invention discloses a grinding method of a numerical control coordinate of a cam. The grinding method of the numerical control coordinate of the cam comprises the following steps: projecting a space curve of the cam on a horizontal coordinate, defining a new XA machine coordinate system, building the relationship of a Y-coordinate and an A-coordinate, confirming a new processing point coordinate (S, theta), and utilizing the linkage of an X-axis and an A-axis of the new XA machine coordinate system to achieve the processing of the space curved face of the cam. The grinding method of the numerical control coordinate of the cam has the advantages of using a double-axis semi-numerical control machine tool to project the space curve on the horizontal coordinate, finding out the relationship between a Y-coordinate value and an A-coordinate value, utilizing the method that the linkage of the X-axis and the A-axis achieves the processing of an end face space curved face, acquiring a good size and shape precision, improving producing efficiency and reducing labor intensity and producing cost, the quality of part products is stable, sizes and shapes meet the design requirements of products, and the grinding method of the numerical control coordinate of the cam can be widely applied to the processing of faces of part series.