FIELD: process engineering.
SUBSTANCE: invention relates to machine building and can be used in producing shell structures with curvilinear work surfaces. Flat thin-wall preform is pressed towards shaping surface of detachable tool. Note here that, simultaneously, curvilinear section with curvilinear work surfaces are formed along with two-layer shaped stiffness ribs jointing the latter together that are produced from preform fragments not involved in forming curvilinear sections of the shell. Shell thickness is made equal to that of preform, while detachable lower die is removed through open zone on the shell extreme edge side.
EFFECT: higher accuracy of shells and efficiency of their production.
6 cl, 16 dwg
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