Outer plate unfolding method and outer plate manufacturing method

摘要

Provided are an outer plate unfolding method and an outer plate manufacturing method capable of reducing the amount of processing and improving the manufacturing efficiency of the outer plate. According to the outer plate unfolding method of the present invention, the first object line and the second object line are copied onto the flat plate as the first object line and the second object line. At this time, the actual length coordinates of the first object line and the geodesic curvature as a function thereof are matched with the actual length coordinates of the first object line and the curvature as a function thereof. In addition, the length of the second copy line in the copy region sandwiched between the adjacent first copy lines is equal to the second copy line in the copy region sandwiched between the adjacent first copy lines corresponding to the copy region. The relative position of the first copying line is determined so that the area of the copying area is the minimum, and the area of the second copying line is determined so that the area of the copying area is minimized. It is determined.