Numerical-control processing method of multi-space hole welding groove on large-scale spherical space curved surface

The invention discloses a numerical-control processing method of a multi-space hole welding groove on a large-scale spherical space curved surface, comprising the following steps of: establishing a mathematical model of a workpiece; analyzing the mathematical model; compiling a space curved surface numerical-control processing procedure of a basic hole with a common parameter; compiling an after-compensation R parameter procedure of a rotary compound angle; compiling a general parameter numerical-control processing procedure of a R parameter processing space hole groove; applying simulation software of a VERICUT numerical-control machine tool to carry out verification; and executing the general procedures to process space holes and the groove. In the invention, because the R parameter form of a universal angle cutter head for compensation is calculated by the R parameter function of a control system of the numerical-control processing machine tool, and the processing of the welding groove is also compiled in