General tool five-axis machining cutting force prediction method based on infinitesimal discretization and application

The invention belongs to the related technical field of machine manufacturing and machining, and discloses a general tool five-axis machining cutting force prediction method based on infinitesimal discretization and application, and the method comprises the following steps: (1) calculating coordinate information of discrete infinitesimal in a cutting contact area and transformation matrix information of a workpiece coordinate system; (2) calculating to obtain a cut-in and cut-out angle at each infinitesimal element; (3) judging whether the cutting edge infinitesimal participates in cutting or not according to the size relationship between the cutting edge corner and the cut-in and cut-out angle; (4) analyzing and calculating a shear force coefficient and an edge force coefficient according to the geometric parameters of the cutter and the material attributes of the workpiece; and (5) calculating the length of an infinitesimal cutting edge, the infinitesimal cutting width and the infinitesimal cutting thicknes