Processing method for spatial correlation multiple holes of large structural component

The invention discloses a processing method for spatial correlation multiple holes of a large structural member, which belongs to the technical field of engineering machinery manufacturing and comprises the following steps of: hoisting a processing positioning tool and placing the processing positioning tool on a workpiece for positioning and fixing the tool; placing a sample punch in the positioning hole of the bushing of the processing and positioning tool, and knocking the sample punch to form a conical central nest; disassembling the tool, placing and fixing the magnetic drill, and machining a hole; and machining and manufacturing of all the holes are completed in sequence. According to the invention, precise processing, manufacturing and rapid detection of associated multiple holes of a large-scale structural member under a complex spatial dimension chain are realized; the problems that the machining size precision of a large complex structural part in a stepped shape is low, the flatness of a local inst