Numerical control machining milling real-time display method

The invention discloses a numerical control machining milling real-time display method, relates to the field of radiology department examination, solves the problem of low comfort level of existing women during radiology department examination, and provides the following scheme: the method comprises the following steps: S1, only using a real-time octree to organize a blank entity; s2, fitting a cutting surface by using a triangular mesh model, quickly querying a cutting area by using an octree structure as an index, and updating mesh node coordinates in the cutting area on the upper surface of the blank according to a contour surface of a tool swept volume; and S3, fitting the cutting surfaces of the triangular mesh twice. The method has the advantages that it is guaranteed that the efficiency of the algorithm cannot be rapidly reduced along with increase of the triangular surface, the defect that a triangulation network is directly used for calculation is overcome, and the whole method can achieve the numeri