Online polishing method for complex curved surface component

The invention discloses an online polishing method for a complex curved surface component. A polishing object of the method is a component with a complex curved surface; the surface of the component is the complex curved surface formed by connecting a plane, a vertical surface and at least two arc cylindrical surfaces; and the radiuses of the two arc surfaces are different. The method comprises transverse polishing and longitudinal polishing, wherein the transverse direction refers to the height direction perpendicular to the plane; and the longitudinal direction refers to the length direction parallel to the axial direction of the arc cylindrical surfaces. According to the online polishing method, steel rail surface polishing can be fully automatically achieved, it is guaranteed that the quality of the steel rail surface is smoother, the product quality of the steel rail surface is improved, the surface is smooth and free of edges and corners and steps, and the labor intensity of workers is relieved. 本发明公开了一